Merge branch 'release/1.4.0'

app/build.gradle

@@ -1,5 +1,6 @@
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
+apply plugin: 'kotlinx-serialization'
 apply plugin: 'kotlin-parcelize'
 apply plugin: 'kotlin-kapt'
 apply plugin: 'dagger.hilt.android.plugin'
@@ -14,23 +15,22 @@ apply from: 'sonarqube.gradle'
 apply from: 'hooks.gradle'
 
 android {
-    compileSdkVersion 30
+    compileSdkVersion 31
 
     defaultConfig {
         applicationId "io.github.wulkanowy"
         testApplicationId "io.github.tests.wulkanowy"
         minSdkVersion 21
-        targetSdkVersion 30
-        versionCode 97
-        versionName "1.3.0"
+        targetSdkVersion 31
+        versionCode 98
+        versionName "1.4.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
-        vectorDrawables.useSupportLibrary = true
 
         resValue "string", "app_name", "Wulkanowy"
-        buildConfigField "long", "BUILD_TIMESTAMP", String.valueOf(System.currentTimeMillis())
 
         manifestPlaceholders = [
-                firebase_enabled: project.hasProperty("enableFirebase")
+                firebase_enabled: project.hasProperty("enableFirebase"),
+                admob_project_id: ""
         ]
         javaCompileOptions {
             annotationProcessorOptions {
@@ -40,6 +40,14 @@ android {
                 ]
             }
         }
+
+        buildConfigField "String", "SINGLE_SUPPORT_AD_ID", "null"
+
+        if (System.env.SET_BUILD_TIMESTAMP) {
+            buildConfigField "long", "BUILD_TIMESTAMP", String.valueOf(System.currentTimeMillis())
+        } else {
+            buildConfigField "long", "BUILD_TIMESTAMP", "1486235849000"
+        }
     }
 
     sourceSets {
@@ -62,12 +70,14 @@ android {
             shrinkResources true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
             signingConfig signingConfigs.release
+            buildConfigField "String", "MESSAGES_BASE_URL", "\"https://messages.wulkanowy.net.pl\""
         }
         debug {
-            resValue "string", "app_name", "Wulkanowy DEV " + defaultConfig.versionCode
+            resValue "string", "app_name", "Wulkanowy DEV"
             applicationIdSuffix ".dev"
             versionNameSuffix "-dev"
             ext.enableCrashlytics = project.hasProperty("enableFirebase")
+            buildConfigField "String", "MESSAGES_BASE_URL", "\"https://messages.wulkanowy.net.pl\""
         }
     }
 
@@ -76,23 +86,21 @@ android {
     productFlavors {
         hms {
             dimension "platform"
-            manifestPlaceholders = [
-                    install_channel: "AppGallery"
-            ]
+            manifestPlaceholders = [install_channel: "AppGallery"]
         }
 
         play {
             dimension "platform"
             manifestPlaceholders = [
-                    install_channel: "Google Play"
+                    install_channel : "Google Play",
+                    admob_project_id: System.getenv("ADMOB_PROJECT_ID") ?: "ca-app-pub-3940256099942544~3347511713"
             ]
+            buildConfigField "String", "SINGLE_SUPPORT_AD_ID", "\"${System.getenv("SINGLE_SUPPORT_AD_ID") ?: "ca-app-pub-3940256099942544/5354046379"}\""
         }
 
         fdroid {
             dimension "platform"
-            manifestPlaceholders = [
-                    install_channel: "F-Droid"
-            ]
+            manifestPlaceholders = [install_channel: "F-Droid"]
         }
     }
 
@@ -141,8 +149,8 @@ kapt {
 
 play {
     defaultToAppBundles = false
-    track = 'production'
-    updatePriority = 3
+    track = 'beta'
+    updatePriority = 1
     enabled.set(false)
 }
 
@@ -157,27 +165,28 @@ huaweiPublish {
 }
 
 ext {
-    work_manager = "2.6.0"
+    work_manager = "2.7.0"
     android_hilt = "1.0.0"
     room = "2.3.0"
     chucker = "3.5.2"
     mockk = "1.12.0"
-    moshi = "1.12.0"
+    coroutines = "1.5.2"
 }
 
 dependencies {
-    implementation "io.github.wulkanowy:sdk:1.3.0"
+    implementation "io.github.wulkanowy:sdk:1.4.0"
 
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
 
-    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.5.2"
+    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.3.1"
+    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutines"
 
-    implementation "androidx.core:core-ktx:1.6.0"
-    implementation "androidx.activity:activity-ktx:1.3.1"
-    implementation "androidx.appcompat:appcompat:1.3.1"
-    implementation "androidx.appcompat:appcompat-resources:1.3.1"
-    implementation "androidx.fragment:fragment-ktx:1.3.6"
-    implementation "androidx.annotation:annotation:1.2.0"
+    implementation "androidx.core:core-ktx:1.7.0"
+    implementation 'androidx.core:core-splashscreen:1.0.0-alpha02'
+    implementation "androidx.activity:activity-ktx:1.4.0"
+    implementation "androidx.appcompat:appcompat:1.4.0-rc01"
+    implementation "androidx.fragment:fragment-ktx:1.4.0-rc01"
+    implementation "androidx.annotation:annotation:1.3.0"
 
     implementation "androidx.preference:preference-ktx:1.1.1"
     implementation "androidx.recyclerview:recyclerview:1.2.1"
@@ -193,7 +202,7 @@ dependencies {
     implementation "androidx.work:work-runtime-ktx:$work_manager"
     playImplementation "androidx.work:work-gcm:$work_manager"
 
-    implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.3.1"
+    implementation "androidx.lifecycle:lifecycle-livedata-ktx:2.4.0"
 
     implementation "androidx.room:room-runtime:$room"
     implementation "androidx.room:room-ktx:$room"
@@ -207,40 +216,41 @@ dependencies {
     implementation 'com.github.ncapdevi:FragNav:3.3.0'
     implementation "com.github.YarikSOffice:lingver:1.3.0"
 
-    implementation "com.squareup.moshi:moshi:$moshi"
-    implementation "com.squareup.moshi:moshi-adapters:$moshi"
-    kapt "com.squareup.moshi:moshi-kotlin-codegen:$moshi"
+    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation "com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:0.8.0"
+    implementation "com.squareup.okhttp3:logging-interceptor:4.9.2"
 
     implementation "com.jakewharton.timber:timber:5.0.1"
     implementation "at.favre.lib:slf4j-timber:1.0.1"
-    implementation 'com.github.bastienpaulfr:Treessence:1.0.4'
+    implementation 'com.github.bastienpaulfr:Treessence:1.0.5'
     implementation "com.mikepenz:aboutlibraries-core:$about_libraries"
-    implementation "io.coil-kt:coil:1.3.2"
+    implementation "io.coil-kt:coil:1.4.0"
     implementation "io.github.wulkanowy:AppKillerManager:3.0.0"
     implementation 'me.xdrop:fuzzywuzzy:1.3.1'
     implementation 'com.fredporciuncula:flow-preferences:1.5.0'
 
-    playImplementation platform('com.google.firebase:firebase-bom:28.4.1')
+    playImplementation platform('com.google.firebase:firebase-bom:29.0.0')
     playImplementation 'com.google.firebase:firebase-analytics-ktx'
     playImplementation 'com.google.firebase:firebase-messaging:'
     playImplementation 'com.google.firebase:firebase-crashlytics:'
     playImplementation 'com.google.android.play:core:1.10.2'
     playImplementation 'com.google.android.play:core-ktx:1.8.1'
+    playImplementation 'com.google.android.gms:play-services-ads:20.4.0'
 
-    hmsImplementation 'com.huawei.hms:hianalytics:6.2.0.301'
-    hmsImplementation 'com.huawei.agconnect:agconnect-crash:1.6.0.300'
+    hmsImplementation 'com.huawei.hms:hianalytics:6.3.0.303'
+    hmsImplementation 'com.huawei.agconnect:agconnect-crash:1.6.1.300'
 
     releaseImplementation "com.github.ChuckerTeam.Chucker:library-no-op:$chucker"
 
     debugImplementation "com.github.ChuckerTeam.Chucker:library:$chucker"
-    debugImplementation 'com.github.amitshekhariitbhu.Android-Debug-Database:debug-db:v1.0.6'
+    debugImplementation 'com.github.amitshekhariitbhu.Android-Debug-Database:debug-db:1.0.6'
 
     testImplementation "junit:junit:4.13.2"
     testImplementation "io.mockk:mockk:$mockk"
-    testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.5.2'
+    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$coroutines"
     testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
 
-    testImplementation 'org.robolectric:robolectric:4.6.1'
+    testImplementation 'org.robolectric:robolectric:4.7'
     testImplementation "androidx.test:runner:1.4.0"
     testImplementation "androidx.test.ext:junit:1.1.3"
     testImplementation "androidx.test:core:1.4.0"

app/src/main/AndroidManifest.xml

@@ -38,10 +38,10 @@
         android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
+        android:networkSecurityConfig="@xml/network_security_config"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="false"
         android:theme="@style/WulkanowyTheme"
-        android:usesCleartextTraffic="true"
         tools:ignore="GoogleAppIndexingWarning,UnusedAttribute">
         <activity
             android:name=".ui.modules.splash.SplashActivity"
@@ -106,7 +106,8 @@
         </service>
         <service
             android:name=".services.messaging.AppMessagingService"
-            android:exported="false">
+            android:exported="false"
+            tools:ignore="MissingClass">
             <intent-filter>
                 <action android:name="com.google.firebase.MESSAGING_EVENT" />
             </intent-filter>
@@ -152,44 +153,44 @@
                 android:resource="@xml/provider_paths" />
         </provider>
 
-        <meta-data
-            android:name="install_channel"
-            android:value="${install_channel}" />
-
         <!-- workaround for https://github.com/firebase/firebase-android-sdk/issues/473 enabled:false -->
         <!-- https://firebase.googleblog.com/2017/03/take-control-of-your-firebase-init-on.html -->
         <provider
             android:name="com.google.firebase.provider.FirebaseInitProvider"
             android:authorities="${applicationId}.firebaseinitprovider"
             android:enabled="${firebase_enabled}"
-            android:exported="false" />
+            android:exported="false"
+            tools:ignore="MissingClass" />
 
+        <meta-data
+            android:name="install_channel"
+            android:value="${install_channel}" />
         <meta-data
             android:name="firebase_analytics_collection_enabled"
             android:value="${firebase_enabled}" />
-
         <meta-data
             android:name="google_analytics_adid_collection_enabled"
             android:value="${firebase_enabled}" />
-
         <meta-data
             android:name="firebase_crashlytics_collection_enabled"
             android:value="${firebase_enabled}" />
-
         <meta-data
             android:name="firebase_messaging_auto_init_enabled"
             android:value="${firebase_enabled}" />
-
         <meta-data
             android:name="firebase_inapp_messaging_auto_data_collection_enabled"
             android:value="${firebase_enabled}" />
-
         <meta-data
             android:name="com.google.firebase.messaging.default_notification_icon"
             android:resource="@drawable/ic_stat_all" />
-
         <meta-data
             android:name="com.google.firebase.messaging.default_notification_channel_id"
             android:value="push_channel" />
+        <meta-data
+            android:name="com.google.android.gms.ads.APPLICATION_ID"
+            android:value="${admob_project_id}" />
+        <meta-data
+            android:name="com.google.android.gms.ads.DELAY_APP_MEASUREMENT_INIT"
+            android:value="true" />
     </application>
 </manifest>

app/src/main/java/io/github/wulkanowy/WulkanowyApp.kt

@@ -1,12 +1,10 @@
 package io.github.wulkanowy
 
-import android.annotation.SuppressLint
 import android.app.Application
 import android.util.Log.DEBUG
 import android.util.Log.INFO
 import android.util.Log.VERBOSE
 import android.webkit.WebView
-import androidx.fragment.app.FragmentManager
 import androidx.hilt.work.HiltWorkerFactory
 import androidx.work.Configuration
 import com.yariksoffice.lingver.Lingver
@@ -41,10 +39,8 @@ class WulkanowyApp : Application(), Configuration.Provider {
     @Inject
     lateinit var analyticsHelper: AnalyticsHelper
 
-    @SuppressLint("UnsafeOptInUsageWarning")
     override fun onCreate() {
         super.onCreate()
-        FragmentManager.enableNewStateManager(false)
         initializeAppLanguage()
         themeManager.applyDefaultTheme()
         initLogging()

app/src/main/java/io/github/wulkanowy/data/DataModule.kt

@@ -2,62 +2,100 @@ package io.github.wulkanowy.data
 
 import android.content.Context
 import android.content.SharedPreferences
-import android.content.res.AssetManager
-import android.content.res.Resources
 import androidx.preference.PreferenceManager
 import com.chuckerteam.chucker.api.ChuckerCollector
 import com.chuckerteam.chucker.api.ChuckerInterceptor
 import com.chuckerteam.chucker.api.RetentionManager
 import com.fredporciuncula.flow.preferences.FlowSharedPreferences
-import com.squareup.moshi.Moshi
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
 import dagger.Module
 import dagger.Provides
 import dagger.hilt.InstallIn
 import dagger.hilt.android.qualifiers.ApplicationContext
 import dagger.hilt.components.SingletonComponent
+import io.github.wulkanowy.data.api.AdminMessageService
 import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AppInfo
 import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.create
 import timber.log.Timber
+import java.util.concurrent.TimeUnit
 import javax.inject.Singleton
 
 @Module
 @InstallIn(SingletonComponent::class)
-internal class RepositoryModule {
+internal class DataModule {
 
     @Singleton
     @Provides
-    fun provideSdk(chuckerCollector: ChuckerCollector, @ApplicationContext context: Context): Sdk {
-        return Sdk().apply {
+    fun provideSdk(chuckerInterceptor: ChuckerInterceptor) =
+        Sdk().apply {
             androidVersion = android.os.Build.VERSION.RELEASE
             buildTag = android.os.Build.MODEL
             setSimpleHttpLogger { Timber.d(it) }
 
             // for debug only
-            addInterceptor(
-                ChuckerInterceptor.Builder(context)
-                    .collector(chuckerCollector)
-                    .alwaysReadResponseBody(true)
-                    .build(), network = true
-            )
+            addInterceptor(chuckerInterceptor, network = true)
         }
-    }
 
     @Singleton
     @Provides
     fun provideChuckerCollector(
         @ApplicationContext context: Context,
         prefRepository: PreferencesRepository
-    ): ChuckerCollector {
-        return ChuckerCollector(
-            context = context,
-            showNotification = prefRepository.isDebugNotificationEnable,
-            retentionPeriod = RetentionManager.Period.ONE_HOUR
-        )
-    }
+    ) = ChuckerCollector(
+        context = context,
+        showNotification = prefRepository.isDebugNotificationEnable,
+        retentionPeriod = RetentionManager.Period.ONE_HOUR
+    )
+
+    @Singleton
+    @Provides
+    fun provideChuckerInterceptor(
+        @ApplicationContext context: Context,
+        chuckerCollector: ChuckerCollector
+    ) = ChuckerInterceptor.Builder(context)
+        .collector(chuckerCollector)
+        .alwaysReadResponseBody(true)
+        .build()
+
+    @Singleton
+    @Provides
+    fun provideOkHttpClient(chuckerInterceptor: ChuckerInterceptor): OkHttpClient =
+        OkHttpClient.Builder()
+            .addNetworkInterceptor(chuckerInterceptor)
+            .addInterceptor(HttpLoggingInterceptor().apply {
+                level = HttpLoggingInterceptor.Level.BASIC
+            })
+            .connectTimeout(30, TimeUnit.SECONDS)
+            .readTimeout(30, TimeUnit.SECONDS)
+            .build()
+
+    @OptIn(ExperimentalSerializationApi::class)
+    @Singleton
+    @Provides
+    fun provideRetrofit(
+        okHttpClient: OkHttpClient,
+        json: Json,
+        appInfo: AppInfo
+    ): Retrofit = Retrofit.Builder()
+        .baseUrl(appInfo.messagesBaseUrl)
+        .client(okHttpClient)
+        .addConverterFactory(json.asConverterFactory("application/json".toMediaType()))
+        .build()
+
+    @Singleton
+    @Provides
+    fun provideAdminMessageService(retrofit: Retrofit): AdminMessageService = retrofit.create()
 
     @Singleton
     @Provides
@@ -67,14 +105,6 @@ internal class RepositoryModule {
         appInfo: AppInfo
     ) = AppDatabase.newInstance(context, sharedPrefProvider, appInfo)
 
-    @Singleton
-    @Provides
-    fun provideResources(@ApplicationContext context: Context): Resources = context.resources
-
-    @Singleton
-    @Provides
-    fun provideAssets(@ApplicationContext context: Context): AssetManager = context.assets
-
     @Singleton
     @Provides
     fun provideSharedPref(@ApplicationContext context: Context): SharedPreferences =
@@ -88,7 +118,9 @@ internal class RepositoryModule {
 
     @Singleton
     @Provides
-    fun provideMoshi() = Moshi.Builder().build()
+    fun provideJson() = Json {
+        ignoreUnknownKeys = true
+    }
 
     @Singleton
     @Provides
@@ -206,4 +238,8 @@ internal class RepositoryModule {
     @Singleton
     @Provides
     fun provideNotificationDao(database: AppDatabase) = database.notificationDao
+
+    @Singleton
+    @Provides
+    fun provideAdminMessageDao(database: AppDatabase) = database.adminMessagesDao
 }

app/src/main/java/io/github/wulkanowy/data/api/AdminMessageService.kt

@@ -0,0 +1,12 @@
+package io.github.wulkanowy.data.api
+
+import io.github.wulkanowy.data.db.entities.AdminMessage
+import retrofit2.http.GET
+import javax.inject.Singleton
+
+@Singleton
+interface AdminMessageService {
+
+    @GET("/v1.json")
+    suspend fun getAdminMessages(): List<AdminMessage>
+}

app/src/main/java/io/github/wulkanowy/data/db/AppDatabase.kt

@@ -6,6 +6,7 @@ import androidx.room.Room
 import androidx.room.RoomDatabase
 import androidx.room.RoomDatabase.JournalMode.TRUNCATE
 import androidx.room.TypeConverters
+import io.github.wulkanowy.data.db.dao.AdminMessageDao
 import io.github.wulkanowy.data.db.dao.AttendanceDao
 import io.github.wulkanowy.data.db.dao.AttendanceSummaryDao
 import io.github.wulkanowy.data.db.dao.CompletedLessonsDao
@@ -35,6 +36,7 @@ import io.github.wulkanowy.data.db.dao.TeacherDao
 import io.github.wulkanowy.data.db.dao.TimetableAdditionalDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
 import io.github.wulkanowy.data.db.dao.TimetableHeaderDao
+import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.data.db.entities.AttendanceSummary
 import io.github.wulkanowy.data.db.entities.CompletedLesson
@@ -98,6 +100,9 @@ import io.github.wulkanowy.data.db.migrations.Migration38
 import io.github.wulkanowy.data.db.migrations.Migration39
 import io.github.wulkanowy.data.db.migrations.Migration4
 import io.github.wulkanowy.data.db.migrations.Migration40
+import io.github.wulkanowy.data.db.migrations.Migration41
+import io.github.wulkanowy.data.db.migrations.Migration42
+import io.github.wulkanowy.data.db.migrations.Migration43
 import io.github.wulkanowy.data.db.migrations.Migration5
 import io.github.wulkanowy.data.db.migrations.Migration6
 import io.github.wulkanowy.data.db.migrations.Migration7
@@ -137,7 +142,8 @@ import javax.inject.Singleton
         StudentInfo::class,
         TimetableHeader::class,
         SchoolAnnouncement::class,
-        Notification::class
+        Notification::class,
+        AdminMessage::class
     ],
     version = AppDatabase.VERSION_SCHEMA,
     exportSchema = true
@@ -146,7 +152,7 @@ import javax.inject.Singleton
 abstract class AppDatabase : RoomDatabase() {
 
     companion object {
-        const val VERSION_SCHEMA = 40
+        const val VERSION_SCHEMA = 43
 
         fun getMigrations(sharedPrefProvider: SharedPrefProvider, appInfo: AppInfo) = arrayOf(
             Migration2(),
@@ -187,7 +193,10 @@ abstract class AppDatabase : RoomDatabase() {
             Migration37(),
             Migration38(),
             Migration39(),
-            Migration40()
+            Migration40(),
+            Migration41(sharedPrefProvider),
+            Migration42(),
+            Migration43()
         )
 
         fun newInstance(
@@ -259,4 +268,6 @@ abstract class AppDatabase : RoomDatabase() {
     abstract val schoolAnnouncementDao: SchoolAnnouncementDao
 
     abstract val notificationDao: NotificationDao
+
+    abstract val adminMessagesDao: AdminMessageDao
 }

app/src/main/java/io/github/wulkanowy/data/db/Converters.kt

@@ -1,9 +1,10 @@
 package io.github.wulkanowy.data.db
 
 import androidx.room.TypeConverter
-import com.squareup.moshi.Moshi
-import com.squareup.moshi.Types
-import io.github.wulkanowy.data.db.adapters.PairAdapterFactory
+import kotlinx.serialization.SerializationException
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
 import java.time.Instant
 import java.time.LocalDate
 import java.time.LocalDateTime
@@ -13,15 +14,7 @@ import java.util.Date
 
 class Converters {
 
-    private val moshi by lazy { Moshi.Builder().add(PairAdapterFactory).build() }
-
-    private val integerListAdapter by lazy {
-        moshi.adapter<List<Int>>(Types.newParameterizedType(List::class.java, Integer::class.java))
-    }
-
-    private val stringListPairAdapter by lazy {
-        moshi.adapter<List<Pair<String, String>>>(Types.newParameterizedType(List::class.java, Pair::class.java, String::class.java, String::class.java))
-    }
+    private val json = Json
 
     @TypeConverter
     fun timestampToDate(value: Long?): LocalDate? = value?.run {
@@ -51,21 +44,25 @@ class Converters {
 
     @TypeConverter
     fun intListToJson(list: List<Int>): String {
-        return integerListAdapter.toJson(list)
+        return json.encodeToString(list)
     }
 
     @TypeConverter
     fun jsonToIntList(value: String): List<Int> {
-        return integerListAdapter.fromJson(value).orEmpty()
+        return json.decodeFromString(value)
     }
 
     @TypeConverter
     fun stringPairListToJson(list: List<Pair<String, String>>): String {
-        return stringListPairAdapter.toJson(list)
+        return json.encodeToString(list)
     }
 
     @TypeConverter
     fun jsonToStringPairList(value: String): List<Pair<String, String>> {
-        return stringListPairAdapter.fromJson(value).orEmpty()
+        return try {
+            json.decodeFromString(value)
+        } catch (e: SerializationException) {
+            emptyList() // handle errors from old gson Pair serialized data
+        }
     }
 }

app/src/main/java/io/github/wulkanowy/data/db/SharedPrefProvider.kt

@@ -22,11 +22,14 @@ class SharedPrefProvider @Inject constructor(
 
     fun getString(key: String) = sharedPref.getString(key, null)
 
-    fun getString(key: String, defaultValue: String): String = sharedPref.getString(key, defaultValue) ?: defaultValue
+    fun getString(key: String, defaultValue: String): String =
+        sharedPref.getString(key, defaultValue) ?: defaultValue
 
-    fun getBoolean(key: String, defaultValue: Boolean): Boolean = sharedPref.getBoolean(key, defaultValue)
+    fun getBoolean(key: String, defaultValue: Boolean): Boolean =
+        sharedPref.getBoolean(key, defaultValue)
 
-    fun putBoolean(key: String, value: Boolean, sync: Boolean = false) = sharedPref.edit(sync) { putBoolean(key, value) }
+    fun putBoolean(key: String, value: Boolean, sync: Boolean = false) =
+        sharedPref.edit(sync) { putBoolean(key, value) }
 
     fun putString(key: String, value: String?, sync: Boolean = false) {
         sharedPref.edit(sync) { putString(key, value) }

app/src/main/java/io/github/wulkanowy/data/db/adapters/PairAdapterFactory.kt

@@ -1,68 +0,0 @@
-package io.github.wulkanowy.data.db.adapters
-
-import com.squareup.moshi.JsonAdapter
-import com.squareup.moshi.JsonReader
-import com.squareup.moshi.JsonWriter
-import com.squareup.moshi.Moshi
-import com.squareup.moshi.Types
-import java.lang.reflect.ParameterizedType
-import java.lang.reflect.Type
-
-object PairAdapterFactory : JsonAdapter.Factory {
-
-    override fun create(type: Type, annotations: MutableSet<out Annotation>, moshi: Moshi): JsonAdapter<*>? {
-        if (type !is ParameterizedType || List::class.java != type.rawType) return null
-        if (type.actualTypeArguments[0] != Pair::class.java) return null
-
-        val listType = Types.newParameterizedType(List::class.java, Map::class.java, String::class.java)
-        val listAdapter = moshi.adapter<List<Map<String, String>>>(listType)
-
-        val mapType = Types.newParameterizedType(MutableMap::class.java, String::class.java, String::class.java)
-        val mapAdapter = moshi.adapter<Map<String, String>>(mapType)
-
-        return PairAdapter(listAdapter, mapAdapter)
-    }
-
-    private class PairAdapter(
-        private val listAdapter: JsonAdapter<List<Map<String, String>>>,
-        private val mapAdapter: JsonAdapter<Map<String, String>>,
-    ) : JsonAdapter<List<Pair<String, String>>>() {
-
-        override fun toJson(writer: JsonWriter, value: List<Pair<String, String>>?) {
-            writer.beginArray()
-            value?.forEach {
-                writer.beginObject()
-                writer.name("first").value(it.first)
-                writer.name("second").value(it.second)
-                writer.endObject()
-            }
-            writer.endArray()
-        }
-
-        override fun fromJson(reader: JsonReader): List<Pair<String, String>>? {
-            return if (reader.peek() == JsonReader.Token.BEGIN_OBJECT) deserializeMoshiMap(reader)
-            else deserializeGsonPair(reader)
-        }
-
-        // for compatibility with 0.21.0
-        private fun deserializeMoshiMap(reader: JsonReader): List<Pair<String, String>>? {
-            val map = mapAdapter.fromJson(reader) ?: return null
-
-            return map.entries.map {
-                it.key to it.value
-            }
-        }
-
-        private fun deserializeGsonPair(reader: JsonReader): List<Pair<String, String>>? {
-            val list = listAdapter.fromJson(reader) ?: return null
-
-            return list.map {
-                require(it.size == 2) {
-                    "pair with more or less than two elements: $list"
-                }
-
-                it["first"].orEmpty() to it["second"].orEmpty()
-            }
-        }
-    }
-}

app/src/main/java/io/github/wulkanowy/data/db/dao/AdminMessageDao.kt

@@ -0,0 +1,25 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Query
+import androidx.room.Transaction
+import io.github.wulkanowy.data.db.entities.AdminMessage
+import kotlinx.coroutines.flow.Flow
+import javax.inject.Singleton
+
+@Singleton
+@Dao
+abstract class AdminMessageDao : BaseDao<AdminMessage> {
+
+    @Query("SELECT * FROM AdminMessages")
+    abstract fun loadAll(): Flow<List<AdminMessage>>
+
+    @Transaction
+    open suspend fun removeOldAndSaveNew(
+        oldMessages: List<AdminMessage>,
+        newMessages: List<AdminMessage>
+    ) {
+        deleteAll(oldMessages)
+        insertAll(newMessages)
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/AttendanceDao.kt

@@ -11,6 +11,11 @@ import javax.inject.Singleton
 @Dao
 interface AttendanceDao : BaseDao<Attendance> {
 
-    @Query("SELECT * FROM Attendance WHERE diary_id = :diaryId AND student_id = :studentId AND date >= :from AND date <= :end")
-    fun loadAll(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): Flow<List<Attendance>>
+    @Query("SELECT * FROM Attendance WHERE diary_id = :diaryId AND student_id = :studentId AND date >= :start AND date <= :end")
+    fun loadAll(
+        diaryId: Int,
+        studentId: Int,
+        start: LocalDate,
+        end: LocalDate
+    ): Flow<List<Attendance>>
 }

app/src/main/java/io/github/wulkanowy/data/db/entities/AdminMessage.kt

@@ -0,0 +1,37 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import kotlinx.serialization.Serializable
+
+@Serializable
+@Entity(tableName = "AdminMessages")
+data class AdminMessage(
+
+    @PrimaryKey
+    val id: Int,
+
+    val title: String,
+
+    val content: String,
+
+    @ColumnInfo(name = "version_name")
+    val versionMin: Int? = null,
+
+    @ColumnInfo(name = "version_max")
+    val versionMax: Int? = null,
+
+    @ColumnInfo(name = "target_register_host")
+    val targetRegisterHost: String? = null,
+
+    @ColumnInfo(name = "target_flavor")
+    val targetFlavor: String? = null,
+
+    @ColumnInfo(name = "destination_url")
+    val destinationUrl: String? = null,
+
+    val priority: String,
+
+    val type: String
+)

app/src/main/java/io/github/wulkanowy/data/db/entities/Attendance.kt

@@ -47,4 +47,7 @@ data class Attendance(
 
     @PrimaryKey(autoGenerate = true)
     var id: Long = 0
+
+    @ColumnInfo(name = "is_notified")
+    var isNotified: Boolean = true
 }

app/src/main/java/io/github/wulkanowy/data/db/entities/Homework.kt

@@ -40,4 +40,7 @@ data class Homework(
 
     @ColumnInfo(name = "is_notified")
     var isNotified: Boolean = true
+
+    @ColumnInfo(name = "is_added_by_user")
+    var isAddedByUser: Boolean = false
 }

app/src/main/java/io/github/wulkanowy/data/db/entities/Recipient.kt

@@ -3,10 +3,9 @@ package io.github.wulkanowy.data.db.entities
 import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
-import com.squareup.moshi.JsonClass
 import java.io.Serializable
 
-@JsonClass(generateAdapter = true)
+@kotlinx.serialization.Serializable
 @Entity(tableName = "Recipients")
 data class Recipient(
 

app/src/main/java/io/github/wulkanowy/data/db/entities/Timetable.kt

@@ -50,4 +50,7 @@ data class Timetable(
 
     @PrimaryKey(autoGenerate = true)
     var id: Long = 0
+
+    @ColumnInfo(name = "is_notified")
+    var isNotified: Boolean = true
 }

app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration41.kt

@@ -0,0 +1,21 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+import io.github.wulkanowy.data.db.SharedPrefProvider
+import io.github.wulkanowy.ui.modules.grade.GradeExpandMode
+
+class Migration41(private val sharedPrefProvider: SharedPrefProvider) : Migration(40, 41) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        migrateSharedPreferences()
+        database.execSQL("ALTER TABLE Homework ADD COLUMN is_added_by_user INTEGER NOT NULL DEFAULT 0")
+    }
+
+    private fun migrateSharedPreferences() {
+        if (sharedPrefProvider.getBoolean("pref_key_expand_grade", false)) {
+            sharedPrefProvider.putString("pref_key_expand_grade_mode", GradeExpandMode.ALWAYS_EXPANDED.value)
+        }
+        sharedPrefProvider.delete("pref_key_expand_grade")
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration42.kt

@@ -0,0 +1,24 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration42 : Migration(41, 42) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL(
+            """CREATE TABLE IF NOT EXISTS `AdminMessages` (
+            `id` INTEGER NOT NULL, 
+            `title` TEXT NOT NULL, 
+            `content` TEXT NOT NULL, 
+            `version_name` INTEGER, 
+            `version_max` INTEGER, 
+            `target_register_host` TEXT, 
+            `target_flavor` TEXT,
+            `destination_url` TEXT,
+            `priority` TEXT NOT NULL,
+            `type` TEXT NOT NULL, 
+            PRIMARY KEY(`id`))"""
+        )
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration43.kt

@@ -0,0 +1,12 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration43 : Migration(42, 43) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("ALTER TABLE Timetable ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+        database.execSQL("ALTER TABLE Attendance ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+    }
+}

app/src/main/java/io/github/wulkanowy/data/pojos/Contributor.kt

@@ -1,8 +1,8 @@
 package io.github.wulkanowy.data.pojos
 
-import com.squareup.moshi.JsonClass
+import kotlinx.serialization.Serializable
 
-@JsonClass(generateAdapter = true)
+@Serializable
 class Contributor(
     val displayName: String,
     val githubUsername: String

app/src/main/java/io/github/wulkanowy/data/pojos/MessageDraft.kt

@@ -1,9 +1,9 @@
 package io.github.wulkanowy.data.pojos
 
-import com.squareup.moshi.JsonClass
 import io.github.wulkanowy.ui.modules.message.send.RecipientChipItem
+import kotlinx.serialization.Serializable
 
-@JsonClass(generateAdapter = true)
+@Serializable
 data class MessageDraft(
     val recipients: List<RecipientChipItem>,
     val subject: String,

app/src/main/java/io/github/wulkanowy/data/pojos/NotificationData.kt

@@ -1,36 +1,19 @@
 package io.github.wulkanowy.data.pojos
 
-import androidx.annotation.DrawableRes
-import androidx.annotation.PluralsRes
-import androidx.annotation.StringRes
+import android.content.Intent
 import io.github.wulkanowy.services.sync.notifications.NotificationType
-import io.github.wulkanowy.ui.modules.main.MainView
 
-sealed interface NotificationData {
+data class NotificationData(
+    val intentToStart: Intent,
+    val title: String,
+    val content: String
+)
+
+data class GroupNotificationData(
+    val notificationDataList: List<NotificationData>,
+    val title: String,
+    val content: String,
+    val intentToStart: Intent,
     val type: NotificationType
-    val startMenu: MainView.Section
-    val icon: Int
-    val titleStringRes: Int
-    val contentStringRes: Int
-}
+)
 
-data class MultipleNotificationsData(
-    override val type: NotificationType,
-    override val startMenu: MainView.Section,
-    @DrawableRes override val icon: Int,
-    @PluralsRes override val titleStringRes: Int,
-    @PluralsRes override val contentStringRes: Int,
-
-    @PluralsRes val summaryStringRes: Int,
-    val lines: List<String>,
-) : NotificationData
-
-data class OneNotificationData(
-    override val type: NotificationType,
-    override val startMenu: MainView.Section,
-    @DrawableRes override val icon: Int,
-    @StringRes override val titleStringRes: Int,
-    @StringRes override val contentStringRes: Int,
-
-    val contentValues: List<String>,
-) : NotificationData

app/src/main/java/io/github/wulkanowy/data/repositories/AdminMessageRepository.kt

@@ -0,0 +1,52 @@
+package io.github.wulkanowy.data.repositories
+
+import io.github.wulkanowy.data.api.AdminMessageService
+import io.github.wulkanowy.data.db.dao.AdminMessageDao
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.utils.AppInfo
+import io.github.wulkanowy.utils.AutoRefreshHelper
+import io.github.wulkanowy.utils.networkBoundResource
+import kotlinx.coroutines.sync.Mutex
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class AdminMessageRepository @Inject constructor(
+    private val adminMessageService: AdminMessageService,
+    private val adminMessageDao: AdminMessageDao,
+    private val appInfo: AppInfo,
+    private val refreshHelper: AutoRefreshHelper,
+) {
+    private val saveFetchResultMutex = Mutex()
+
+    private val cacheKey = "admin_messages"
+
+    suspend fun getAdminMessages(student: Student, forceRefresh: Boolean) = networkBoundResource(
+        mutex = saveFetchResultMutex,
+        query = { adminMessageDao.loadAll() },
+        fetch = { adminMessageService.getAdminMessages() },
+        shouldFetch = {
+            refreshHelper.shouldBeRefreshed(cacheKey) || forceRefresh
+        },
+        saveFetchResult = { oldItems, newItems ->
+            adminMessageDao.removeOldAndSaveNew(oldItems, newItems)
+            refreshHelper.updateLastRefreshTimestamp(cacheKey)
+        },
+        showSavedOnLoading = false,
+        mapResult = { adminMessages ->
+            adminMessages.filter { adminMessage ->
+                val isCorrectRegister = adminMessage.targetRegisterHost?.let {
+                    student.scrapperBaseUrl.contains(it, true)
+                } ?: true
+                val isCorrectFlavor =
+                    adminMessage.targetFlavor?.equals(appInfo.buildFlavor, true) ?: true
+                val isCorrectMaxVersion =
+                    adminMessage.versionMax?.let { it >= appInfo.versionCode } ?: true
+                val isCorrectMinVersion =
+                    adminMessage.versionMin?.let { it <= appInfo.versionCode } ?: true
+
+                isCorrectRegister && isCorrectFlavor && isCorrectMaxVersion && isCorrectMinVersion
+            }.maxByOrNull { it.id }
+        }
+    )
+}

app/src/main/java/io/github/wulkanowy/data/repositories/AppCreatorRepository.kt

@@ -1,25 +1,27 @@
 package io.github.wulkanowy.data.repositories
 
-import android.content.res.AssetManager
-import com.squareup.moshi.Moshi
-import com.squareup.moshi.Types
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.data.pojos.Contributor
 import io.github.wulkanowy.utils.DispatchersProvider
 import kotlinx.coroutines.withContext
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.json.Json
+import kotlinx.serialization.json.decodeFromStream
 import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
 class AppCreatorRepository @Inject constructor(
-    private val assets: AssetManager,
-    private val dispatchers: DispatchersProvider
+    @ApplicationContext private val context: Context,
+    private val dispatchers: DispatchersProvider,
+    private val json: Json,
 ) {
 
+    @OptIn(ExperimentalSerializationApi::class)
     @Suppress("BlockingMethodInNonBlockingContext")
-    suspend fun getAppCreators() = withContext(dispatchers.backgroundThread) {
-        val moshi = Moshi.Builder().build()
-        val type = Types.newParameterizedType(List::class.java, Contributor::class.java)
-        val adapter = moshi.adapter<List<Contributor>>(type)
-        adapter.fromJson(assets.open("contributors.json").bufferedReader().use { it.readText() })
+    suspend fun getAppCreators() = withContext(dispatchers.io) {
+        val inputStream = context.assets.open("contributors.json").buffered()
+        json.decodeFromStream<List<Contributor>>(inputStream)
     }
 }

app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceRepository.kt

@@ -14,6 +14,7 @@ import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.networkBoundResource
 import io.github.wulkanowy.utils.sunday
 import io.github.wulkanowy.utils.uniqueSubtract
+import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
 import java.time.LocalDate
 import java.time.LocalDateTime
@@ -38,6 +39,7 @@ class AttendanceRepository @Inject constructor(
         start: LocalDate,
         end: LocalDate,
         forceRefresh: Boolean,
+        notify: Boolean = false,
     ) = networkBoundResource(
         mutex = saveFetchResultMutex,
         shouldFetch = {
@@ -56,13 +58,28 @@ class AttendanceRepository @Inject constructor(
         },
         saveFetchResult = { old, new ->
             attendanceDb.deleteAll(old uniqueSubtract new)
-            attendanceDb.insertAll(new uniqueSubtract old)
+            val attendanceToAdd = (new uniqueSubtract old).map { newAttendance ->
+                newAttendance.apply { if (notify) isNotified = false }
+            }
+            attendanceDb.insertAll(attendanceToAdd)
 
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester, start, end))
         },
         filterResult = { it.filter { item -> item.date in start..end } }
     )
 
+    fun getAttendanceFromDatabase(
+        semester: Semester,
+        start: LocalDate,
+        end: LocalDate
+    ): Flow<List<Attendance>> {
+        return attendanceDb.loadAll(semester.diaryId, semester.studentId, start, end)
+    }
+
+    suspend fun updateTimetable(timetable: List<Attendance>) {
+        return attendanceDb.updateAll(timetable)
+    }
+
     suspend fun excuseForAbsence(
         student: Student, semester: Semester,
         absenceList: List<Attendance>, reason: String? = null

app/src/main/java/io/github/wulkanowy/data/repositories/HomeworkRepository.kt

@@ -61,8 +61,9 @@ class HomeworkRepository @Inject constructor(
             val homeWorkToSave = (new uniqueSubtract old).onEach {
                 if (notify) it.isNotified = false
             }
+            val filteredOld = old.filterNot { it.isAddedByUser }
 
-            homeworkDb.deleteAll(old uniqueSubtract new)
+            homeworkDb.deleteAll(filteredOld uniqueSubtract new)
             homeworkDb.insertAll(homeWorkToSave)
 
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester, start, end))
@@ -79,4 +80,8 @@ class HomeworkRepository @Inject constructor(
         homeworkDb.loadAll(semester.semesterId, semester.studentId, start.monday, end.sunday)
 
     suspend fun updateHomework(homework: List<Homework>) = homeworkDb.updateAll(homework)
+
+    suspend fun saveHomework(homework: Homework) = homeworkDb.insertAll(listOf(homework))
+
+    suspend fun deleteHomework(homework: Homework) = homeworkDb.deleteAll(listOf(homework))
 }

app/src/main/java/io/github/wulkanowy/data/repositories/LoggerRepository.kt

@@ -15,24 +15,23 @@ class LoggerRepository @Inject constructor(
 
     suspend fun getLastLogLines() = getLastModified().readText().split("\n")
 
-    suspend fun getLogFiles() = withContext(dispatchers.backgroundThread) {
-        File(context.filesDir.absolutePath).listFiles(File::isFile)?.filter {
-            it.name.endsWith(".log")
-        }!!
+    suspend fun getLogFiles() = withContext(dispatchers.io) {
+        File(context.filesDir.absolutePath).listFiles(File::isFile)
+            ?.filter { it.name.endsWith(".log") }!!
     }
 
-    private suspend fun getLastModified(): File {
-        return withContext(dispatchers.backgroundThread) {
-            var lastModifiedTime = Long.MIN_VALUE
-            var chosenFile: File? = null
-            File(context.filesDir.absolutePath).listFiles(File::isFile)?.forEach { file ->
+    private suspend fun getLastModified() = withContext(dispatchers.io) {
+        var lastModifiedTime = Long.MIN_VALUE
+        var chosenFile: File? = null
+
+        File(context.filesDir.absolutePath).listFiles(File::isFile)
+            ?.forEach { file ->
                 if (file.lastModified() > lastModifiedTime) {
                     lastModifiedTime = file.lastModified()
                     chosenFile = file
                 }
             }
-            if (chosenFile == null) throw FileNotFoundException("Log file not found")
-            chosenFile!!
-        }
+
+        chosenFile ?: throw FileNotFoundException("Log file not found")
     }
 }

app/src/main/java/io/github/wulkanowy/data/repositories/MessageRepository.kt

@@ -1,7 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
 import android.content.Context
-import com.squareup.moshi.Moshi
 import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.Resource
@@ -18,7 +17,6 @@ import io.github.wulkanowy.data.enums.MessageFolder.RECEIVED
 import io.github.wulkanowy.data.mappers.mapFromEntities
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.pojos.MessageDraft
-import io.github.wulkanowy.data.pojos.MessageDraftJsonAdapter
 import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.sdk.pojo.Folder
 import io.github.wulkanowy.sdk.pojo.SentMessage
@@ -29,6 +27,9 @@ import io.github.wulkanowy.utils.networkBoundResource
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
 import timber.log.Timber
 import java.time.LocalDateTime.now
 import javax.inject.Inject
@@ -42,7 +43,7 @@ class MessageRepository @Inject constructor(
     @ApplicationContext private val context: Context,
     private val refreshHelper: AutoRefreshHelper,
     private val sharedPrefProvider: SharedPrefProvider,
-    private val moshi: Moshi,
+    private val json: Json,
 ) {
 
     private val saveFetchResultMutex = Mutex()
@@ -168,9 +169,9 @@ class MessageRepository @Inject constructor(
 
     var draftMessage: MessageDraft?
         get() = sharedPrefProvider.getString(context.getString(R.string.pref_key_message_send_draft))
-            ?.let { MessageDraftJsonAdapter(moshi).fromJson(it) }
+            ?.let { json.decodeFromString(it) }
         set(value) = sharedPrefProvider.putString(
             context.getString(R.string.pref_key_message_send_draft),
-            value?.let { MessageDraftJsonAdapter(moshi).toJson(it) }
+            value?.let { json.encodeToString(it) }
         )
 }

app/src/main/java/io/github/wulkanowy/data/repositories/PreferencesRepository.kt

@@ -5,20 +5,23 @@ import android.content.SharedPreferences
 import androidx.core.content.edit
 import com.fredporciuncula.flow.preferences.FlowSharedPreferences
 import com.fredporciuncula.flow.preferences.Preference
-import com.squareup.moshi.JsonAdapter
-import com.squareup.moshi.Moshi
-import com.squareup.moshi.adapter
 import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.sdk.toLocalDate
 import io.github.wulkanowy.ui.modules.dashboard.DashboardItem
 import io.github.wulkanowy.ui.modules.grade.GradeAverageMode
+import io.github.wulkanowy.ui.modules.grade.GradeExpandMode
 import io.github.wulkanowy.ui.modules.grade.GradeSortingMode
 import io.github.wulkanowy.utils.toLocalDateTime
 import io.github.wulkanowy.utils.toTimestamp
 import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.map
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
+import java.lang.ClassCastException
+import java.lang.IllegalStateException
 import java.time.LocalDate
 import java.time.LocalDateTime
 import javax.inject.Inject
@@ -27,16 +30,12 @@ import javax.inject.Singleton
 @OptIn(ExperimentalCoroutinesApi::class)
 @Singleton
 class PreferencesRepository @Inject constructor(
+    @ApplicationContext val context: Context,
     private val sharedPref: SharedPreferences,
     private val flowSharedPref: FlowSharedPreferences,
-    @ApplicationContext val context: Context,
-    moshi: Moshi
+    private val json: Json,
 ) {
 
-    @OptIn(ExperimentalStdlibApi::class)
-    private val dashboardItemsPositionAdapter: JsonAdapter<Map<DashboardItem.Type, Int>> =
-        moshi.adapter()
-
     val startMenuIndex: Int
         get() = getString(R.string.pref_key_start_menu, R.string.pref_default_startup).toInt()
 
@@ -60,8 +59,13 @@ class PreferencesRepository @Inject constructor(
             R.bool.pref_default_grade_average_force_calc
         )
 
-    val isGradeExpandable: Boolean
-        get() = !getBoolean(R.string.pref_key_expand_grade, R.bool.pref_default_expand_grade)
+    val gradeExpandMode: GradeExpandMode
+        get() = GradeExpandMode.getByValue(
+            getString(
+                R.string.pref_key_expand_grade_mode,
+                R.string.pref_default_expand_grade_mode
+            )
+        )
 
     val showAllSubjectsOnStatisticsList: Boolean
         get() = getBoolean(
@@ -197,14 +201,14 @@ class PreferencesRepository @Inject constructor(
 
     var dashboardItemsPosition: Map<DashboardItem.Type, Int>?
         get() {
-            val json = sharedPref.getString(PREF_KEY_DASHBOARD_ITEMS_POSITION, null) ?: return null
+            val value = sharedPref.getString(PREF_KEY_DASHBOARD_ITEMS_POSITION, null) ?: return null
 
-            return dashboardItemsPositionAdapter.fromJson(json)
+            return json.decodeFromString(value)
         }
         set(value) = sharedPref.edit {
             putString(
                 PREF_KEY_DASHBOARD_ITEMS_POSITION,
-                dashboardItemsPositionAdapter.toJson(value)
+                json.encodeToString(value)
             )
         }
 
@@ -213,6 +217,7 @@ class PreferencesRepository @Inject constructor(
             .map { set ->
                 set.map { DashboardItem.Tile.valueOf(it) }
                     .plus(DashboardItem.Tile.ACCOUNT)
+                    .plus(DashboardItem.Tile.ADMIN_MESSAGE)
                     .toSet()
             }
 
@@ -220,6 +225,7 @@ class PreferencesRepository @Inject constructor(
         get() = selectedDashboardTilesPreference.get()
             .map { DashboardItem.Tile.valueOf(it) }
             .plus(DashboardItem.Tile.ACCOUNT)
+            .plus(DashboardItem.Tile.ADMIN_MESSAGE)
             .toSet()
         set(value) {
             val filteredValue = value.filterNot { it == DashboardItem.Tile.ACCOUNT }
@@ -267,6 +273,9 @@ class PreferencesRepository @Inject constructor(
     private fun getBoolean(id: String, default: Int) =
         sharedPref.getBoolean(id, context.resources.getBoolean(default))
 
+    private fun getBoolean(id: Int, default: Boolean) =
+        sharedPref.getBoolean(context.getString(id), default)
+
     private companion object {
 
         private const val PREF_KEY_DASHBOARD_ITEMS_POSITION = "dashboard_items_position"

app/src/main/java/io/github/wulkanowy/data/repositories/SemesterRepository.kt

@@ -26,7 +26,7 @@ class SemesterRepository @Inject constructor(
         student: Student,
         forceRefresh: Boolean = false,
         refreshOnNoCurrent: Boolean = false
-    ) = withContext(dispatchers.backgroundThread) {
+    ) = withContext(dispatchers.io) {
         val semesters = semesterDb.loadAll(student.studentId, student.classId)
 
         if (isShouldFetch(student, semesters, forceRefresh, refreshOnNoCurrent)) {
@@ -64,7 +64,7 @@ class SemesterRepository @Inject constructor(
     }
 
     suspend fun getCurrentSemester(student: Student, forceRefresh: Boolean = false) =
-        withContext(dispatchers.backgroundThread) {
+        withContext(dispatchers.io) {
             getSemesters(student, forceRefresh).getCurrentOrLast()
         }
 }

app/src/main/java/io/github/wulkanowy/data/repositories/StudentRepository.kt

@@ -66,7 +66,7 @@ class StudentRepository @Inject constructor(
             .map {
                 it.apply {
                     if (decryptPass && Sdk.Mode.valueOf(student.loginMode) != Sdk.Mode.API) {
-                        student.password = withContext(dispatchers.backgroundThread) {
+                        student.password = withContext(dispatchers.io) {
                             decrypt(student.password)
                         }
                     }
@@ -77,7 +77,7 @@ class StudentRepository @Inject constructor(
         val student = studentDb.loadById(id) ?: throw NoCurrentStudentException()
 
         if (decryptPass && Sdk.Mode.valueOf(student.loginMode) != Sdk.Mode.API) {
-            student.password = withContext(dispatchers.backgroundThread) {
+            student.password = withContext(dispatchers.io) {
                 decrypt(student.password)
             }
         }
@@ -88,7 +88,7 @@ class StudentRepository @Inject constructor(
         val student = studentDb.loadCurrent() ?: throw NoCurrentStudentException()
 
         if (decryptPass && Sdk.Mode.valueOf(student.loginMode) != Sdk.Mode.API) {
-            student.password = withContext(dispatchers.backgroundThread) {
+            student.password = withContext(dispatchers.io) {
                 decrypt(student.password)
             }
         }
@@ -101,7 +101,7 @@ class StudentRepository @Inject constructor(
             .map {
                 it.apply {
                     if (Sdk.Mode.valueOf(it.loginMode) != Sdk.Mode.API) {
-                        password = withContext(dispatchers.backgroundThread) {
+                        password = withContext(dispatchers.io) {
                             encrypt(password, context)
                         }
                     }

app/src/main/java/io/github/wulkanowy/data/repositories/TimetableRepository.kt

@@ -47,6 +47,7 @@ class TimetableRepository @Inject constructor(
         end: LocalDate,
         forceRefresh: Boolean,
         refreshAdditional: Boolean = false,
+        notify: Boolean = false
     ) = networkBoundResource(
         mutex = saveFetchResultMutex,
         shouldFetch = { (timetable, additional, headers) ->
@@ -67,7 +68,7 @@ class TimetableRepository @Inject constructor(
             timetableFull.mapToEntities(semester)
         },
         saveFetchResult = { timetableOld, timetableNew ->
-            refreshTimetable(student, timetableOld.lessons, timetableNew.lessons)
+            refreshTimetable(student, timetableOld.lessons, timetableNew.lessons, notify)
             refreshAdditional(timetableOld.additional, timetableNew.additional)
             refreshDayHeaders(timetableOld.headers, timetableNew.headers)
 
@@ -117,13 +118,28 @@ class TimetableRepository @Inject constructor(
         }
     }
 
+    fun getTimetableFromDatabase(
+        semester: Semester,
+        from: LocalDate,
+        end: LocalDate
+    ): Flow<List<Timetable>> {
+        return timetableDb.loadAll(semester.diaryId, semester.studentId, from, end)
+    }
+
+    suspend fun updateTimetable(timetable: List<Timetable>) {
+        return timetableDb.updateAll(timetable)
+    }
+
     private suspend fun refreshTimetable(
         student: Student,
         lessonsOld: List<Timetable>,
         lessonsNew: List<Timetable>,
+        notify: Boolean
     ) {
         val lessonsToRemove = lessonsOld uniqueSubtract lessonsNew
-        val lessonsToAdd = lessonsNew uniqueSubtract lessonsOld
+        val lessonsToAdd = (lessonsNew uniqueSubtract lessonsOld).map { new ->
+            new.apply { if (notify) isNotified = false }
+        }
 
         timetableDb.deleteAll(lessonsToRemove)
         timetableDb.insertAll(lessonsToAdd)

app/src/main/java/io/github/wulkanowy/services/ServicesModule.kt

@@ -15,6 +15,7 @@ import dagger.multibindings.IntoSet
 import io.github.wulkanowy.services.sync.channels.Channel
 import io.github.wulkanowy.services.sync.channels.DebugChannel
 import io.github.wulkanowy.services.sync.channels.LuckyNumberChannel
+import io.github.wulkanowy.services.sync.channels.NewAttendanceChannel
 import io.github.wulkanowy.services.sync.channels.NewConferencesChannel
 import io.github.wulkanowy.services.sync.channels.NewExamChannel
 import io.github.wulkanowy.services.sync.channels.NewGradesChannel
@@ -23,6 +24,7 @@ import io.github.wulkanowy.services.sync.channels.NewMessagesChannel
 import io.github.wulkanowy.services.sync.channels.NewNotesChannel
 import io.github.wulkanowy.services.sync.channels.NewSchoolAnnouncementsChannel
 import io.github.wulkanowy.services.sync.channels.PushChannel
+import io.github.wulkanowy.services.sync.channels.TimetableChangeChannel
 import io.github.wulkanowy.services.sync.channels.UpcomingLessonsChannel
 import io.github.wulkanowy.services.sync.works.AttendanceSummaryWork
 import io.github.wulkanowy.services.sync.works.AttendanceWork
@@ -167,4 +169,12 @@ abstract class ServicesModule {
     @Binds
     @IntoSet
     abstract fun provideUpcomingLessonsChannel(channel: UpcomingLessonsChannel): Channel
+
+    @Binds
+    @IntoSet
+    abstract fun provideChangeTimetableChannel(channel: TimetableChangeChannel): Channel
+
+    @Binds
+    @IntoSet
+    abstract fun provideNewAttendanceChannel(channel: NewAttendanceChannel): Channel
 }

app/src/main/java/io/github/wulkanowy/services/alarm/TimetableNotificationReceiver.kt

@@ -1,7 +1,6 @@
 package io.github.wulkanowy.services.alarm
 
 import android.app.PendingIntent
-import android.app.PendingIntent.FLAG_UPDATE_CURRENT
 import android.content.Context
 import android.content.Intent
 import android.os.Build
@@ -15,8 +14,9 @@ import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
 import io.github.wulkanowy.services.HiltBroadcastReceiver
 import io.github.wulkanowy.services.sync.channels.UpcomingLessonsChannel.Companion.CHANNEL_ID
-import io.github.wulkanowy.ui.modules.main.MainActivity
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.PendingIntentCompat
 import io.github.wulkanowy.utils.flowWithResource
 import io.github.wulkanowy.utils.getCompatColor
 import io.github.wulkanowy.utils.toLocalDateTime
@@ -41,7 +41,7 @@ class TimetableNotificationReceiver : HiltBroadcastReceiver() {
         const val NOTIFICATION_TYPE_UPCOMING = 2
         const val NOTIFICATION_TYPE_LAST_LESSON_CANCELLATION = 3
 
-        const val NOTIFICATION_ID = "id"
+        const val NOTIFICATION_ID = 2137
 
         const val STUDENT_NAME = "student_name"
         const val STUDENT_ID = "student_id"
@@ -71,11 +71,10 @@ class TimetableNotificationReceiver : HiltBroadcastReceiver() {
 
     private fun prepareNotification(context: Context, intent: Intent) {
         val type = intent.getIntExtra(LESSON_TYPE, 0)
-        val notificationId = intent.getIntExtra(NOTIFICATION_ID, MainView.Section.TIMETABLE.id)
         val isPersistent = preferencesRepository.isUpcomingLessonsNotificationsPersistent
 
         if (type == NOTIFICATION_TYPE_LAST_LESSON_CANCELLATION) {
-            return NotificationManagerCompat.from(context).cancel(notificationId)
+            return NotificationManagerCompat.from(context).cancel(NOTIFICATION_ID)
         }
 
         val studentId = intent.getIntExtra(STUDENT_ID, 0)
@@ -92,7 +91,8 @@ class TimetableNotificationReceiver : HiltBroadcastReceiver() {
 
         Timber.d("TimetableNotification receive: type: $type, subject: $subject, start: ${start.toLocalDateTime()}, student: $studentId")
 
-        showNotification(context, notificationId, isPersistent, studentName,
+        showNotification(
+            context, isPersistent, studentName,
             if (type == NOTIFICATION_TYPE_CURRENT) end else start, end - start,
             context.getString(
                 if (type == NOTIFICATION_TYPE_CURRENT) R.string.timetable_now else R.string.timetable_next,
@@ -109,7 +109,6 @@ class TimetableNotificationReceiver : HiltBroadcastReceiver() {
 
     private fun showNotification(
         context: Context,
-        notificationId: Int,
         isPersistent: Boolean,
         studentName: String?,
         countDown: Long,
@@ -118,12 +117,13 @@ class TimetableNotificationReceiver : HiltBroadcastReceiver() {
         next: String?
     ) {
         NotificationManagerCompat.from(context)
-            .notify(notificationId, NotificationCompat.Builder(context, CHANNEL_ID)
+            .notify(NOTIFICATION_ID, NotificationCompat.Builder(context, CHANNEL_ID)
                 .setContentTitle(title)
                 .setContentText(next)
                 .setAutoCancel(false)
                 .setWhen(countDown)
                 .setOngoing(isPersistent)
+                .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
                 .apply {
                     if (Build.VERSION.SDK_INT >= N) setUsesChronometer(true)
                 }
@@ -137,9 +137,9 @@ class TimetableNotificationReceiver : HiltBroadcastReceiver() {
                 .setContentIntent(
                     PendingIntent.getActivity(
                         context,
-                        MainView.Section.TIMETABLE.id,
-                        MainActivity.getStartIntent(context, MainView.Section.TIMETABLE, true),
-                        FLAG_UPDATE_CURRENT
+                        NOTIFICATION_ID,
+                        SplashActivity.getStartIntent(context, Destination.Timetable()),
+                        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntentCompat.FLAG_IMMUTABLE
                     )
                 )
                 .build()

app/src/main/java/io/github/wulkanowy/services/alarm/TimetableNotificationSchedulerHelper.kt

@@ -3,7 +3,6 @@ package io.github.wulkanowy.services.alarm
 import android.app.AlarmManager
 import android.app.AlarmManager.RTC_WAKEUP
 import android.app.PendingIntent
-import android.app.PendingIntent.FLAG_UPDATE_CURRENT
 import android.content.Context
 import android.content.Intent
 import androidx.core.app.AlarmManagerCompat
@@ -25,8 +24,8 @@ import io.github.wulkanowy.services.alarm.TimetableNotificationReceiver.Companio
 import io.github.wulkanowy.services.alarm.TimetableNotificationReceiver.Companion.NOTIFICATION_TYPE_UPCOMING
 import io.github.wulkanowy.services.alarm.TimetableNotificationReceiver.Companion.STUDENT_ID
 import io.github.wulkanowy.services.alarm.TimetableNotificationReceiver.Companion.STUDENT_NAME
-import io.github.wulkanowy.ui.modules.main.MainView
 import io.github.wulkanowy.utils.DispatchersProvider
+import io.github.wulkanowy.utils.PendingIntentCompat
 import io.github.wulkanowy.utils.nickOrName
 import io.github.wulkanowy.utils.toTimestamp
 import kotlinx.coroutines.withContext
@@ -54,7 +53,7 @@ class TimetableNotificationSchedulerHelper @Inject constructor(
 
     suspend fun cancelScheduled(lessons: List<Timetable>, student: Student) {
         val studentId = student.studentId
-        withContext(dispatchersProvider.backgroundThread) {
+        withContext(dispatchersProvider.io) {
             lessons.sortedBy { it.start }.forEachIndexed { index, lesson ->
                 val upcomingTime = getUpcomingLessonTime(index, lessons, lesson)
                 cancelScheduledTo(
@@ -73,13 +72,19 @@ class TimetableNotificationSchedulerHelper @Inject constructor(
 
     private fun cancelScheduledTo(range: ClosedRange<LocalDateTime>, requestCode: Int) {
         if (now() in range) cancelNotification()
+
         alarmManager.cancel(
-            PendingIntent.getBroadcast(context, requestCode, Intent(), FLAG_UPDATE_CURRENT)
+            PendingIntent.getBroadcast(
+                context,
+                requestCode,
+                Intent(),
+                PendingIntent.FLAG_UPDATE_CURRENT or PendingIntentCompat.FLAG_IMMUTABLE
+            )
         )
     }
 
     fun cancelNotification() =
-        NotificationManagerCompat.from(context).cancel(MainView.Section.TIMETABLE.id)
+        NotificationManagerCompat.from(context).cancel(NOTIFICATION_ID)
 
     suspend fun scheduleNotifications(lessons: List<Timetable>, student: Student) {
         if (!preferencesRepository.isUpcomingLessonsNotificationsEnable) {
@@ -91,7 +96,7 @@ class TimetableNotificationSchedulerHelper @Inject constructor(
             return
         }
 
-        withContext(dispatchersProvider.backgroundThread) {
+        withContext(dispatchersProvider.io) {
             lessons.groupBy { it.date }
                 .map { it.value.sortedBy { lesson -> lesson.start } }
                 .map { it.filter { lesson -> lesson.isStudentPlan } }
@@ -156,9 +161,8 @@ class TimetableNotificationSchedulerHelper @Inject constructor(
             AlarmManagerCompat.setExactAndAllowWhileIdle(
                 alarmManager, RTC_WAKEUP, time.toTimestamp(),
                 PendingIntent.getBroadcast(context, getRequestCode(time, studentId), intent.also {
-                    it.putExtra(NOTIFICATION_ID, MainView.Section.TIMETABLE.id)
                     it.putExtra(LESSON_TYPE, notificationType)
-                }, FLAG_UPDATE_CURRENT)
+                }, PendingIntent.FLAG_UPDATE_CURRENT or PendingIntentCompat.FLAG_IMMUTABLE)
             )
             Timber.d(
                 "TimetableNotification scheduled: type: $notificationType, subject: ${

app/src/main/java/io/github/wulkanowy/services/shortcuts/ShortcutsHelper.kt

@@ -0,0 +1,90 @@
+package io.github.wulkanowy.services.shortcuts
+
+import android.content.Context
+import android.content.Intent
+import androidx.core.content.pm.ShortcutInfoCompat
+import androidx.core.content.pm.ShortcutManagerCompat
+import androidx.core.graphics.drawable.IconCompat
+import dagger.hilt.android.qualifiers.ApplicationContext
+import io.github.wulkanowy.R
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class ShortcutsHelper @Inject constructor(@ApplicationContext private val context: Context) {
+
+    private val destinations = mapOf(
+        "grade" to Destination.Grade,
+        "attendance" to Destination.Attendance,
+        "exam" to Destination.Exam,
+        "timetable" to Destination.Timetable()
+    )
+
+    init {
+        initializeShortcuts()
+    }
+
+    fun getDestination(intent: Intent) =
+        destinations[intent.getStringExtra(EXTRA_SHORTCUT_DESTINATION_ID)]
+
+    private fun initializeShortcuts() {
+        val shortcutsInfo = listOf(
+            ShortcutInfoCompat.Builder(context, "grade_shortcut")
+                .setShortLabel(context.getString(R.string.grade_title))
+                .setLongLabel(context.getString(R.string.grade_title))
+                .setIcon(IconCompat.createWithResource(context, R.drawable.ic_shortcut_grade))
+                .setIntent(SplashActivity.getStartIntent(context)
+                    .apply {
+                        action = Intent.ACTION_VIEW
+                        putExtra(EXTRA_SHORTCUT_DESTINATION_ID, "grade")
+                    }
+                )
+                .build(),
+
+            ShortcutInfoCompat.Builder(context, "attendance_shortcut")
+                .setShortLabel(context.getString(R.string.attendance_title))
+                .setLongLabel(context.getString(R.string.attendance_title))
+                .setIcon(IconCompat.createWithResource(context, R.drawable.ic_shortcut_attendance))
+                .setIntent(SplashActivity.getStartIntent(context)
+                    .apply {
+                        action = Intent.ACTION_VIEW
+                        putExtra(EXTRA_SHORTCUT_DESTINATION_ID, "attendance")
+                    }
+                )
+                .build(),
+
+            ShortcutInfoCompat.Builder(context, "exam_shortcut")
+                .setShortLabel(context.getString(R.string.exam_title))
+                .setLongLabel(context.getString(R.string.exam_title))
+                .setIcon(IconCompat.createWithResource(context, R.drawable.ic_shortcut_exam))
+                .setIntent(SplashActivity.getStartIntent(context)
+                    .apply {
+                        action = Intent.ACTION_VIEW
+                        putExtra(EXTRA_SHORTCUT_DESTINATION_ID, "exam")
+                    }
+                )
+                .build(),
+
+            ShortcutInfoCompat.Builder(context, "timetable_shortcut")
+                .setShortLabel(context.getString(R.string.timetable_title))
+                .setLongLabel(context.getString(R.string.timetable_title))
+                .setIcon(IconCompat.createWithResource(context, R.drawable.ic_shortcut_timetable))
+                .setIntent(SplashActivity.getStartIntent(context)
+                    .apply {
+                        action = Intent.ACTION_VIEW
+                        putExtra(EXTRA_SHORTCUT_DESTINATION_ID, "timetable")
+                    }
+                )
+                .build()
+        )
+
+        shortcutsInfo.forEach { ShortcutManagerCompat.pushDynamicShortcut(context, it) }
+    }
+
+    private companion object {
+
+        private const val EXTRA_SHORTCUT_DESTINATION_ID = "shortcut_destination_id"
+    }
+}

app/src/main/java/io/github/wulkanowy/services/sync/SyncManager.kt

@@ -74,7 +74,7 @@ class SyncManager @Inject constructor(
         }
     }
 
-    fun startOneTimeSyncWorker(): Flow<WorkInfo> {
+    fun startOneTimeSyncWorker(): Flow<WorkInfo?> {
         val work = OneTimeWorkRequestBuilder<SyncWorker>()
             .setInputData(
                 Data.Builder()

app/src/main/java/io/github/wulkanowy/services/sync/SyncWorker.kt

@@ -19,11 +19,11 @@ import io.github.wulkanowy.sdk.exception.FeatureNotAvailableException
 import io.github.wulkanowy.sdk.scrapper.exception.FeatureDisabledException
 import io.github.wulkanowy.services.sync.channels.DebugChannel
 import io.github.wulkanowy.services.sync.works.Work
+import io.github.wulkanowy.utils.DispatchersProvider
 import io.github.wulkanowy.utils.getCompatColor
-import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.withContext
 import timber.log.Timber
 import java.time.LocalDateTime
-import java.time.ZoneId
 import kotlin.random.Random
 
 @HiltWorker
@@ -34,13 +34,14 @@ class SyncWorker @AssistedInject constructor(
     private val semesterRepository: SemesterRepository,
     private val works: Set<@JvmSuppressWildcards Work>,
     private val preferencesRepository: PreferencesRepository,
-    private val notificationManager: NotificationManagerCompat
+    private val notificationManager: NotificationManagerCompat,
+    private val dispatchersProvider: DispatchersProvider
 ) : CoroutineWorker(appContext, workerParameters) {
 
-    override suspend fun doWork() = coroutineScope {
+    override suspend fun doWork() = withContext(dispatchersProvider.io) {
         Timber.i("SyncWorker is starting")
 
-        if (!studentRepository.isCurrentStudentSet()) return@coroutineScope Result.failure()
+        if (!studentRepository.isCurrentStudentSet()) return@withContext Result.failure()
 
         val student = studentRepository.getCurrentStudent()
         val semester = semesterRepository.getCurrentSemester(student, true)
@@ -50,12 +51,12 @@ class SyncWorker @AssistedInject constructor(
                 Timber.i("${work::class.java.simpleName} is starting")
                 work.doWork(student, semester)
                 Timber.i("${work::class.java.simpleName} result: Success")
-                preferencesRepository.lasSyncDate = LocalDateTime.now(ZoneId.systemDefault())
                 null
             } catch (e: Throwable) {
                 Timber.w("${work::class.java.simpleName} result: An exception ${e.message} occurred")
-                if (e is FeatureDisabledException || e is FeatureNotAvailableException) null
-                else {
+                if (e is FeatureDisabledException || e is FeatureNotAvailableException) {
+                    null
+                } else {
                     Timber.e(e)
                     e
                 }
@@ -70,13 +71,16 @@ class SyncWorker @AssistedInject constructor(
                 )
             }
             exceptions.isNotEmpty() -> Result.retry()
-            else -> Result.success()
+            else -> {
+                preferencesRepository.lasSyncDate = LocalDateTime.now()
+                Result.success()
+            }
         }
 
         if (preferencesRepository.isDebugNotificationEnable) notify(result)
         Timber.i("SyncWorker result: $result")
 
-        result
+        return@withContext result
     }
 
     private fun notify(result: Result) {

app/src/main/java/io/github/wulkanowy/services/sync/channels/NewAttendanceChannel.kt

@@ -0,0 +1,36 @@
+package io.github.wulkanowy.services.sync.channels
+
+import android.annotation.TargetApi
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import androidx.core.app.NotificationManagerCompat
+import dagger.hilt.android.qualifiers.ApplicationContext
+import io.github.wulkanowy.R
+import javax.inject.Inject
+
+@TargetApi(26)
+class NewAttendanceChannel @Inject constructor(
+    private val notificationManager: NotificationManagerCompat,
+    @ApplicationContext private val context: Context
+) : Channel {
+
+    companion object {
+        const val CHANNEL_ID = "new_attendance_channel"
+    }
+
+    override fun create() {
+        notificationManager.createNotificationChannel(
+            NotificationChannel(
+                CHANNEL_ID,
+                context.getString(R.string.channel_new_attendance),
+                NotificationManager.IMPORTANCE_HIGH
+            )
+                .apply {
+                    enableLights(true)
+                    enableVibration(true)
+                    lockscreenVisibility = Notification.VISIBILITY_PUBLIC
+                })
+    }
+}

app/src/main/java/io/github/wulkanowy/services/sync/channels/TimetableChangeChannel.kt

@@ -0,0 +1,36 @@
+package io.github.wulkanowy.services.sync.channels
+
+import android.annotation.TargetApi
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.content.Context
+import androidx.core.app.NotificationManagerCompat
+import dagger.hilt.android.qualifiers.ApplicationContext
+import io.github.wulkanowy.R
+import javax.inject.Inject
+
+@TargetApi(26)
+class TimetableChangeChannel @Inject constructor(
+    private val notificationManager: NotificationManagerCompat,
+    @ApplicationContext private val context: Context
+) : Channel {
+
+    companion object {
+        const val CHANNEL_ID = "change_timetable_channel"
+    }
+
+    override fun create() {
+        notificationManager.createNotificationChannel(
+            NotificationChannel(
+                CHANNEL_ID,
+                context.getString(R.string.channel_change_timetable),
+                NotificationManager.IMPORTANCE_HIGH
+            )
+                .apply {
+                    enableLights(true)
+                    enableVibration(true)
+                    lockscreenVisibility = Notification.VISIBILITY_PUBLIC
+                })
+    }
+}

app/src/main/java/io/github/wulkanowy/services/sync/notifications/AppNotificationManager.kt

@@ -10,12 +10,11 @@ import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Notification
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
+import io.github.wulkanowy.data.pojos.GroupNotificationData
 import io.github.wulkanowy.data.pojos.NotificationData
-import io.github.wulkanowy.data.pojos.OneNotificationData
 import io.github.wulkanowy.data.repositories.NotificationRepository
-import io.github.wulkanowy.ui.modules.main.MainActivity
-import io.github.wulkanowy.utils.AppInfo
+import io.github.wulkanowy.data.repositories.StudentRepository
+import io.github.wulkanowy.utils.PendingIntentCompat
 import io.github.wulkanowy.utils.getCompatBitmap
 import io.github.wulkanowy.utils.getCompatColor
 import io.github.wulkanowy.utils.nickOrName
@@ -26,120 +25,156 @@ import kotlin.random.Random
 class AppNotificationManager @Inject constructor(
     private val notificationManager: NotificationManagerCompat,
     @ApplicationContext private val context: Context,
-    private val appInfo: AppInfo,
+    private val studentRepository: StudentRepository,
     private val notificationRepository: NotificationRepository
 ) {
 
-    suspend fun sendNotification(notificationData: NotificationData, student: Student) =
-        when (notificationData) {
-            is OneNotificationData -> sendOneNotification(notificationData, student)
-            is MultipleNotificationsData -> sendMultipleNotifications(notificationData, student)
-        }
-
-    private suspend fun sendOneNotification(
-        notificationData: OneNotificationData,
-        student: Student
-    ) {
-        val content = context.getString(
-            notificationData.contentStringRes,
-            *notificationData.contentValues.toTypedArray()
-        )
-
-        val title = context.getString(notificationData.titleStringRes)
-
-        val notification = getDefaultNotificationBuilder(notificationData)
-            .setContentTitle(title)
-            .setContentText(content)
-            .setStyle(
-                NotificationCompat.BigTextStyle()
-                    .setSummaryText(student.nickOrName)
-                    .bigText(content)
-            )
-            .build()
-
-        notificationManager.notify(Random.nextInt(Int.MAX_VALUE), notification)
-
-        saveNotification(title, content, notificationData, student)
-    }
-
-    private suspend fun sendMultipleNotifications(
-        notificationData: MultipleNotificationsData,
-        student: Student
-    ) {
-        val groupType = notificationData.type.group ?: return
-        val group = "${groupType}_${student.id}"
-        val groupId = student.id * 100 + notificationData.type.ordinal
-
-        notificationData.lines.forEach { item ->
-            val title = context.resources.getQuantityString(notificationData.titleStringRes, 1)
-
-            val notification = getDefaultNotificationBuilder(notificationData)
-                .setContentTitle(title)
-                .setContentText(item)
-                .setStyle(
-                    NotificationCompat.BigTextStyle()
-                        .setSummaryText(student.nickOrName)
-                        .bigText(item)
-                )
-                .setGroup(group)
-                .build()
-
-            notificationManager.notify(Random.nextInt(Int.MAX_VALUE), notification)
-
-            saveNotification(title, item, notificationData, student)
-        }
-
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return
-
-        val summaryNotification = getDefaultNotificationBuilder(notificationData)
-            .setSmallIcon(notificationData.icon)
-            .setGroup(group)
-            .setStyle(NotificationCompat.InboxStyle().setSummaryText(student.nickOrName))
-            .setGroupSummary(true)
-            .build()
-
-        notificationManager.notify(groupId.toInt(), summaryNotification)
-    }
-
     @SuppressLint("InlinedApi")
-    private fun getDefaultNotificationBuilder(notificationData: NotificationData): NotificationCompat.Builder {
-        val pendingIntentsFlags = if (appInfo.systemVersion >= Build.VERSION_CODES.M) {
-            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
-        } else {
-            PendingIntent.FLAG_UPDATE_CURRENT
-        }
-
-        return NotificationCompat.Builder(context, notificationData.type.channel)
-            .setLargeIcon(context.getCompatBitmap(notificationData.icon, R.color.colorPrimary))
+    suspend fun sendSingleNotification(
+        notificationData: NotificationData,
+        notificationType: NotificationType,
+        student: Student
+    ) {
+        val notification = NotificationCompat.Builder(context, notificationType.channel)
+            .setLargeIcon(context.getCompatBitmap(notificationType.icon, R.color.colorPrimary))
             .setSmallIcon(R.drawable.ic_stat_all)
             .setAutoCancel(true)
             .setDefaults(NotificationCompat.DEFAULT_ALL)
             .setPriority(NotificationCompat.PRIORITY_HIGH)
             .setColor(context.getCompatColor(R.color.colorPrimary))
+            .setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_SUMMARY)
             .setContentIntent(
                 PendingIntent.getActivity(
                     context,
-                    notificationData.startMenu.id,
-                    MainActivity.getStartIntent(context, notificationData.startMenu, true),
-                    pendingIntentsFlags
+                    Random.nextInt(),
+                    notificationData.intentToStart,
+                    PendingIntent.FLAG_UPDATE_CURRENT or PendingIntentCompat.FLAG_IMMUTABLE
                 )
             )
+            .setContentTitle(notificationData.title)
+            .setContentText(notificationData.content)
+            .setStyle(
+                NotificationCompat.BigTextStyle()
+                    .bigText(notificationData.content)
+                    .also { builder ->
+                        if (shouldShowStudentName()) {
+                            builder.setSummaryText(student.nickOrName)
+                        }
+                    }
+            )
+            .build()
+
+        notificationManager.notify(Random.nextInt(), notification)
+        saveNotification(notificationData, notificationType, student)
+    }
+
+    @SuppressLint("InlinedApi")
+    suspend fun sendMultipleNotifications(
+        groupNotificationData: GroupNotificationData,
+        student: Student
+    ) {
+        val notificationType = groupNotificationData.type
+        val groupType = notificationType.group ?: return
+        val group = "${groupType}_${student.id}"
+
+        sendSummaryNotification(groupNotificationData, group, student)
+
+        groupNotificationData.notificationDataList.forEach { notificationData ->
+            val notification = NotificationCompat.Builder(context, notificationType.channel)
+                .setLargeIcon(context.getCompatBitmap(notificationType.icon, R.color.colorPrimary))
+                .setSmallIcon(R.drawable.ic_stat_all)
+                .setAutoCancel(true)
+                .setDefaults(NotificationCompat.DEFAULT_ALL)
+                .setPriority(NotificationCompat.PRIORITY_HIGH)
+                .setColor(context.getCompatColor(R.color.colorPrimary))
+                .setGroupAlertBehavior(NotificationCompat.GROUP_ALERT_SUMMARY)
+                .setContentIntent(
+                    PendingIntent.getActivity(
+                        context,
+                        Random.nextInt(),
+                        notificationData.intentToStart,
+                        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntentCompat.FLAG_IMMUTABLE
+                    )
+                )
+                .setContentTitle(notificationData.title)
+                .setContentText(notificationData.content)
+                .setStyle(
+                    NotificationCompat.BigTextStyle()
+                        .bigText(notificationData.content)
+                        .also { builder ->
+                            if (shouldShowStudentName()) {
+                                builder.setSummaryText(student.nickOrName)
+                            }
+                        }
+                )
+                .setGroup(group)
+                .build()
+
+            notificationManager.notify(Random.nextInt(), notification)
+            saveNotification(notificationData, groupNotificationData.type, student)
+        }
+    }
+
+    private suspend fun sendSummaryNotification(
+        groupNotificationData: GroupNotificationData,
+        group: String,
+        student: Student
+    ) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) return
+
+        val summaryNotification =
+            NotificationCompat.Builder(context, groupNotificationData.type.channel)
+                .setContentTitle(groupNotificationData.title)
+                .setContentText(groupNotificationData.content)
+                .setSmallIcon(groupNotificationData.type.icon)
+                .setAutoCancel(true)
+                .setDefaults(NotificationCompat.DEFAULT_ALL)
+                .setPriority(NotificationCompat.PRIORITY_HIGH)
+                .setColor(context.getCompatColor(R.color.colorPrimary))
+                .setStyle(
+                    NotificationCompat.InboxStyle()
+                        .also { builder ->
+                            if (shouldShowStudentName()) {
+                                builder.setSummaryText(student.nickOrName)
+                            }
+                            groupNotificationData.notificationDataList.forEach {
+                                builder.addLine(it.content)
+                            }
+                        }
+                )
+                .setContentIntent(
+                    PendingIntent.getActivity(
+                        context,
+                        Random.nextInt(),
+                        groupNotificationData.intentToStart,
+                        PendingIntent.FLAG_UPDATE_CURRENT or PendingIntentCompat.FLAG_IMMUTABLE
+                    )
+                )
+                .setLocalOnly(true)
+                .setGroup(group)
+                .setGroupSummary(true)
+                .build()
+
+        val groupId = student.id * 100 + groupNotificationData.type.ordinal
+        notificationManager.notify(groupId.toInt(), summaryNotification)
     }
 
     private suspend fun saveNotification(
-        title: String,
-        content: String,
         notificationData: NotificationData,
+        notificationType: NotificationType,
         student: Student
     ) {
         val notificationEntity = Notification(
             studentId = student.id,
-            title = title,
-            content = content,
-            type = notificationData.type,
+            title = notificationData.title,
+            content = notificationData.content,
+            type = notificationType,
             date = LocalDateTime.now()
         )
 
         notificationRepository.saveNotification(notificationEntity)
     }
-}
+
+    private suspend fun shouldShowStudentName(): Boolean =
+        studentRepository.getSavedStudents(decryptPass = false).size > 1
+}

app/src/main/java/io/github/wulkanowy/services/sync/notifications/ChangeTimetableNotification.kt

@@ -0,0 +1,124 @@
+package io.github.wulkanowy.services.sync.notifications
+
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
+import io.github.wulkanowy.R
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.data.db.entities.Timetable
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
+import io.github.wulkanowy.utils.toFormattedString
+import java.time.LocalDate
+import java.time.LocalDateTime
+import javax.inject.Inject
+
+class ChangeTimetableNotification @Inject constructor(
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context,
+) {
+
+    suspend fun notify(items: List<Timetable>, student: Student) {
+        val currentTime = LocalDateTime.now()
+        val changedLessons = items.filter { (it.canceled || it.changes) && it.start > currentTime }
+        val notificationDataList = changedLessons.groupBy { it.date }
+            .map { (date, lessons) ->
+                getNotificationContents(date, lessons).map {
+                    NotificationData(
+                        title = context.getPlural(
+                            R.plurals.timetable_notify_new_items_title,
+                            1
+                        ),
+                        content = it,
+                        intentToStart = SplashActivity.getStartIntent(
+                            context = context,
+                            destination = Destination.Timetable(date)
+                        )
+                    )
+                }
+            }
+            .flatten()
+            .ifEmpty { return }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(
+                R.plurals.timetable_notify_new_items_title,
+                changedLessons.size
+            ),
+            content = context.getPlural(
+                R.plurals.timetable_notify_new_items_group,
+                changedLessons.size,
+                changedLessons.size
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Timetable()),
+            type = NotificationType.CHANGE_TIMETABLE
+        )
+
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
+    }
+
+    private fun getNotificationContents(date: LocalDate, lessons: List<Timetable>): List<String> {
+        val formattedDate = date.toFormattedString("EEE dd.MM")
+
+        return if (lessons.size > 2) {
+            listOf(
+                context.getPlural(
+                    R.plurals.timetable_notify_new_items,
+                    lessons.size,
+                    formattedDate,
+                    lessons.size,
+                )
+            )
+        } else {
+            lessons.map {
+                buildString {
+                    append(
+                        context.getString(
+                            R.string.timetable_notify_lesson,
+                            formattedDate,
+                            it.number,
+                            it.subject
+                        )
+                    )
+                    if (it.roomOld.isNotBlank()) {
+                        appendLine()
+                        append(
+                            context.getString(
+                                R.string.timetable_notify_change_room,
+                                it.roomOld,
+                                it.room
+                            )
+                        )
+                    }
+                    if (it.teacherOld.isNotBlank() && it.teacher != it.teacherOld) {
+                        appendLine()
+                        append(
+                            context.getString(
+                                R.string.timetable_notify_change_teacher,
+                                it.teacherOld,
+                                it.teacher
+                            )
+                        )
+                    }
+                    if (it.subjectOld.isNotBlank()) {
+                        appendLine()
+                        append(
+                            context.getString(
+                                R.string.timetable_notify_change_subject,
+                                it.subjectOld,
+                                it.subject
+                            )
+                        )
+                    }
+                    if (it.info.isNotBlank()) {
+                        appendLine()
+                        append(it.info)
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewAttendanceNotification.kt

@@ -0,0 +1,55 @@
+package io.github.wulkanowy.services.sync.notifications
+
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
+import io.github.wulkanowy.R
+import io.github.wulkanowy.data.db.entities.Attendance
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.descriptionRes
+import io.github.wulkanowy.utils.getPlural
+import io.github.wulkanowy.utils.toFormattedString
+import javax.inject.Inject
+
+class NewAttendanceNotification @Inject constructor(
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
+) {
+
+    suspend fun notify(items: List<Attendance>, student: Student) {
+        val lines = items.filterNot { it.presence || it.name == "UNKNOWN" }
+            .map {
+                val description = context.getString(it.descriptionRes)
+                "${it.date.toFormattedString("dd.MM")} - ${it.subject}: $description"
+            }
+            .ifEmpty { return }
+
+        val notificationDataList = lines.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.attendance_notify_new_items_title, 1),
+                content = it,
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Attendance)
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(
+                R.plurals.attendance_notify_new_items_title,
+                notificationDataList.size
+            ),
+            content = context.getPlural(
+                R.plurals.attendance_notify_new_items,
+                notificationDataList.size,
+                notificationDataList.size
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Attendance),
+            type = NotificationType.NEW_ATTENDANCE
+        )
+
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
+    }
+}

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewConferenceNotification.kt

@@ -1,34 +1,52 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Conference
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
 import io.github.wulkanowy.utils.toFormattedString
 import java.time.LocalDateTime
 import javax.inject.Inject
 
 class NewConferenceNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
     suspend fun notify(items: List<Conference>, student: Student) {
         val today = LocalDateTime.now()
-        val lines = items.filter { !it.date.isBefore(today) }.map {
-            "${it.date.toFormattedString("dd.MM")} - ${it.title}: ${it.subject}"
-        }.ifEmpty { return }
+        val lines = items.filter { !it.date.isBefore(today) }
+            .map {
+                "${it.date.toFormattedString("dd.MM")} - ${it.title}: ${it.subject}"
+            }
+            .ifEmpty { return }
 
-        val notification = MultipleNotificationsData(
-            type = NotificationType.NEW_CONFERENCE,
-            icon = R.drawable.ic_more_conferences,
-            titleStringRes = R.plurals.conference_notify_new_item_title,
-            contentStringRes = R.plurals.conference_notify_new_items,
-            summaryStringRes = R.plurals.conference_number_item,
-            startMenu = MainView.Section.CONFERENCE,
-            lines = lines
+        val notificationDataList = lines.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.conference_notify_new_item_title, 1),
+                content = it,
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Conference)
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(R.plurals.conference_notify_new_item_title, lines.size),
+            content = context.getPlural(
+                R.plurals.conference_notify_new_items,
+                lines.size,
+                lines.size
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Conference),
+            type = NotificationType.NEW_CONFERENCE
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewExamNotification.kt

@@ -1,34 +1,52 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Exam
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
 import io.github.wulkanowy.utils.toFormattedString
 import java.time.LocalDate
 import javax.inject.Inject
 
 class NewExamNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
     suspend fun notify(items: List<Exam>, student: Student) {
         val today = LocalDate.now()
-        val lines = items.filter { !it.date.isBefore(today) }.map {
-            "${it.date.toFormattedString("dd.MM")} - ${it.subject}: ${it.description}"
-        }.ifEmpty { return }
+        val lines = items.filter { !it.date.isBefore(today) }
+            .map {
+                "${it.date.toFormattedString("dd.MM")} - ${it.subject}: ${it.description}"
+            }
+            .ifEmpty { return }
 
-        val notification = MultipleNotificationsData(
-            type = NotificationType.NEW_EXAM,
-            icon = R.drawable.ic_main_exam,
-            titleStringRes = R.plurals.exam_notify_new_item_title,
-            contentStringRes = R.plurals.exam_notify_new_item_content,
-            summaryStringRes = R.plurals.exam_number_item,
-            startMenu = MainView.Section.EXAM,
-            lines = lines
+        val notificationDataList = lines.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.exam_notify_new_item_title, 1),
+                content = it,
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Exam),
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(R.plurals.exam_notify_new_item_title, lines.size),
+            content = context.getPlural(
+                R.plurals.exam_notify_new_item_content,
+                lines.size,
+                lines.size
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Exam),
+            type = NotificationType.NEW_EXAM
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewGradeNotification.kt

@@ -1,62 +1,88 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Grade
 import io.github.wulkanowy.data.db.entities.GradeSummary
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
 import javax.inject.Inject
 
 class NewGradeNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
     suspend fun notifyDetails(items: List<Grade>, student: Student) {
-        val notification = MultipleNotificationsData(
-            type = NotificationType.NEW_GRADE_DETAILS,
-            icon = R.drawable.ic_stat_grade,
-            titleStringRes = R.plurals.grade_new_items,
-            contentStringRes = R.plurals.grade_notify_new_items,
-            summaryStringRes = R.plurals.grade_number_item,
-            startMenu = MainView.Section.GRADE,
-            lines = items.map {
-                "${it.subject}: ${it.entry}"
-            }
+        val notificationDataList = items.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.grade_new_items, 1),
+                content = "${it.subject}: ${it.entry}",
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Grade),
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(R.plurals.grade_new_items, items.size),
+            content = context.getPlural(R.plurals.grade_notify_new_items, items.size, items.size),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Grade),
+            type = NotificationType.NEW_GRADE_DETAILS
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 
     suspend fun notifyPredicted(items: List<GradeSummary>, student: Student) {
-        val notification = MultipleNotificationsData(
-            type = NotificationType.NEW_GRADE_PREDICTED,
-            icon = R.drawable.ic_stat_grade,
-            titleStringRes = R.plurals.grade_new_items_predicted,
-            contentStringRes = R.plurals.grade_notify_new_items_predicted,
-            summaryStringRes = R.plurals.grade_number_item,
-            startMenu = MainView.Section.GRADE,
-            lines = items.map {
-                "${it.subject}: ${it.predictedGrade}"
-            }
+        val notificationDataList = items.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.grade_new_items_predicted, 1),
+                content = "${it.subject}: ${it.predictedGrade}",
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Grade),
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(R.plurals.grade_new_items_predicted, items.size),
+            content = context.getPlural(
+                R.plurals.grade_notify_new_items_predicted,
+                items.size,
+                items.size
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Grade),
+            type = NotificationType.NEW_GRADE_PREDICTED
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 
     suspend fun notifyFinal(items: List<GradeSummary>, student: Student) {
-        val notification = MultipleNotificationsData(
-            type = NotificationType.NEW_GRADE_FINAL,
-            icon = R.drawable.ic_stat_grade,
-            titleStringRes = R.plurals.grade_new_items_final,
-            contentStringRes = R.plurals.grade_notify_new_items_final,
-            summaryStringRes = R.plurals.grade_number_item,
-            startMenu = MainView.Section.GRADE,
-            lines = items.map {
-                "${it.subject}: ${it.finalGrade}"
-            }
+        val notificationDataList = items.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.grade_new_items_final, 1),
+                content = "${it.subject}: ${it.finalGrade}",
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Grade),
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(R.plurals.grade_new_items_final, items.size),
+            content = context.getPlural(
+                R.plurals.grade_notify_new_items_final,
+                items.size,
+                items.size
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Grade),
+            type = NotificationType.NEW_GRADE_FINAL
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewHomeworkNotification.kt

@@ -1,34 +1,52 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Homework
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
 import io.github.wulkanowy.utils.toFormattedString
 import java.time.LocalDate
 import javax.inject.Inject
 
 class NewHomeworkNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
     suspend fun notify(items: List<Homework>, student: Student) {
         val today = LocalDate.now()
-        val lines = items.filter { !it.date.isBefore(today) }.map {
-            "${it.date.toFormattedString("dd.MM")} - ${it.subject}: ${it.content}"
-        }.ifEmpty { return }
+        val lines = items.filter { !it.date.isBefore(today) }
+            .map {
+                "${it.date.toFormattedString("dd.MM")} - ${it.subject}: ${it.content}"
+            }
+            .ifEmpty { return }
 
-        val notification = MultipleNotificationsData(
+        val notificationDataList = lines.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.homework_notify_new_item_title, 1),
+                content = it,
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Homework),
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            title = context.getPlural(R.plurals.homework_notify_new_item_title, lines.size),
+            content = context.getPlural(
+                R.plurals.homework_notify_new_item_content,
+                lines.size,
+                lines.size
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Homework),
             type = NotificationType.NEW_HOMEWORK,
-            icon = R.drawable.ic_more_homework,
-            titleStringRes = R.plurals.homework_notify_new_item_title,
-            contentStringRes = R.plurals.homework_notify_new_item_content,
-            summaryStringRes = R.plurals.homework_number_item,
-            startMenu = MainView.Section.HOMEWORK,
-            lines = lines
+            notificationDataList = notificationDataList
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewLuckyNumberNotification.kt

@@ -1,26 +1,34 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.LuckyNumber
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.OneNotificationData
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
 import javax.inject.Inject
 
 class NewLuckyNumberNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
-   suspend fun notify(item: LuckyNumber, student: Student) {
-       val notification = OneNotificationData(
-           type = NotificationType.NEW_LUCKY_NUMBER,
-           icon = R.drawable.ic_stat_luckynumber,
-           titleStringRes = R.string.lucky_number_notify_new_item_title,
-           contentStringRes = R.string.lucky_number_notify_new_item,
-           startMenu = MainView.Section.LUCKY_NUMBER,
-           contentValues = listOf(item.luckyNumber.toString())
-       )
+    suspend fun notify(item: LuckyNumber, student: Student) {
+        val notificationData = NotificationData(
+            title = context.getString(R.string.lucky_number_notify_new_item_title),
+            content = context.getString(
+                R.string.lucky_number_notify_new_item,
+                item.luckyNumber.toString()
+            ),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.LuckyNumber)
+        )
 
-       appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendSingleNotification(
+            notificationData = notificationData,
+            notificationType = NotificationType.NEW_LUCKY_NUMBER,
+            student = student
+        )
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewMessageNotification.kt

@@ -1,29 +1,39 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
 import javax.inject.Inject
 
 class NewMessageNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
     suspend fun notify(items: List<Message>, student: Student) {
-        val notification = MultipleNotificationsData(
-            type = NotificationType.NEW_MESSAGE,
-            icon = R.drawable.ic_stat_message,
-            titleStringRes = R.plurals.message_new_items,
-            contentStringRes = R.plurals.message_notify_new_items,
-            summaryStringRes = R.plurals.message_number_item,
-            startMenu = MainView.Section.MESSAGE,
-            lines = items.map {
-                "${it.sender}: ${it.subject}"
-            }
+        val notificationDataList = items.map {
+            NotificationData(
+                title = context.getPlural(R.plurals.message_new_items, 1),
+                content = "${it.sender}: ${it.subject}",
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Message),
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            title = context.getPlural(R.plurals.message_new_items, items.size),
+            content = context.getPlural(R.plurals.message_notify_new_items, items.size, items.size),
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Message),
+            type = NotificationType.NEW_MESSAGE
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewNoteNotification.kt

@@ -1,42 +1,46 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Note
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
 import io.github.wulkanowy.sdk.scrapper.notes.NoteCategory
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
 import javax.inject.Inject
 
 class NewNoteNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
     suspend fun notify(items: List<Note>, student: Student) {
-        val notification = MultipleNotificationsData(
-            type = NotificationType.NEW_NOTE,
-            icon = R.drawable.ic_stat_note,
-            titleStringRes = when (NoteCategory.getByValue(items.first().categoryType)) {
+        val notificationDataList = items.map {
+            val titleRes = when (NoteCategory.getByValue(it.categoryType)) {
                 NoteCategory.POSITIVE -> R.plurals.praise_new_items
                 NoteCategory.NEUTRAL -> R.plurals.neutral_note_new_items
                 else -> R.plurals.note_new_items
-            },
-            contentStringRes = when (NoteCategory.getByValue(items.first().categoryType)) {
-                NoteCategory.POSITIVE -> R.plurals.praise_notify_new_items
-                NoteCategory.NEUTRAL -> R.plurals.neutral_note_notify_new_items
-                else -> R.plurals.note_notify_new_items
-            },
-            summaryStringRes = when (NoteCategory.getByValue(items.first().categoryType)) {
-                NoteCategory.POSITIVE -> R.plurals.praise_number_item
-                NoteCategory.NEUTRAL -> R.plurals.neutral_note_number_item
-                else -> R.plurals.note_number_item
-            },
-            startMenu = MainView.Section.NOTE,
-            lines = items.map {
-                "${it.teacher}: ${it.category}"
             }
+
+            NotificationData(
+                title = context.getPlural(titleRes, 1),
+                content = "${it.teacher}: ${it.category}",
+                intentToStart = SplashActivity.getStartIntent(context, Destination.Note),
+            )
+        }
+
+        val groupNotificationData = GroupNotificationData(
+            notificationDataList = notificationDataList,
+            intentToStart = SplashActivity.getStartIntent(context, Destination.Note),
+            title = context.getPlural(R.plurals.note_new_items, items.size),
+            content = context.getPlural(R.plurals.note_notify_new_items, items.size, items.size),
+            type = NotificationType.NEW_NOTE
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NewSchoolAnnouncementNotification.kt

@@ -1,29 +1,54 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.SchoolAnnouncement
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.data.pojos.MultipleNotificationsData
-import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.data.pojos.GroupNotificationData
+import io.github.wulkanowy.data.pojos.NotificationData
+import io.github.wulkanowy.ui.modules.Destination
+import io.github.wulkanowy.ui.modules.splash.SplashActivity
+import io.github.wulkanowy.utils.getPlural
 import javax.inject.Inject
 
 class NewSchoolAnnouncementNotification @Inject constructor(
-    private val appNotificationManager: AppNotificationManager
+    private val appNotificationManager: AppNotificationManager,
+    @ApplicationContext private val context: Context
 ) {
 
-   suspend fun notify(items: List<SchoolAnnouncement>, student: Student) {
-       val notification = MultipleNotificationsData(
-           type = NotificationType.NEW_ANNOUNCEMENT,
-           icon = R.drawable.ic_all_about,
-           titleStringRes = R.plurals.school_announcement_notify_new_item_title,
-           contentStringRes = R.plurals.school_announcement_notify_new_items,
-           summaryStringRes = R.plurals.school_announcement_number_item,
-           startMenu = MainView.Section.SCHOOL_ANNOUNCEMENT,
-           lines = items.map {
-               "${it.subject}: ${it.content}"
-           }
+    suspend fun notify(items: List<SchoolAnnouncement>, student: Student) {
+        val notificationDataList = items.map {
+            NotificationData(
+                intentToStart = SplashActivity.getStartIntent(
+                    context = context,
+                    destination = Destination.SchoolAnnouncement
+                ),
+                title = context.getPlural(
+                    R.plurals.school_announcement_notify_new_item_title,
+                    1
+                ),
+                content = "${it.subject}: ${it.content}"
+            )
+        }
+        val groupNotificationData = GroupNotificationData(
+            type = NotificationType.NEW_ANNOUNCEMENT,
+            intentToStart = SplashActivity.getStartIntent(
+                context = context,
+                destination = Destination.SchoolAnnouncement
+            ),
+            title = context.getPlural(
+                R.plurals.school_announcement_notify_new_item_title,
+                items.size
+            ),
+            content = context.getPlural(
+                R.plurals.school_announcement_notify_new_items,
+                items.size,
+                items.size
+            ),
+            notificationDataList = notificationDataList
         )
 
-        appNotificationManager.sendNotification(notification, student)
+        appNotificationManager.sendMultipleNotifications(groupNotificationData, student)
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/notifications/NotificationType.kt

@@ -1,6 +1,8 @@
 package io.github.wulkanowy.services.sync.notifications
 
+import io.github.wulkanowy.R
 import io.github.wulkanowy.services.sync.channels.LuckyNumberChannel
+import io.github.wulkanowy.services.sync.channels.NewAttendanceChannel
 import io.github.wulkanowy.services.sync.channels.NewConferencesChannel
 import io.github.wulkanowy.services.sync.channels.NewExamChannel
 import io.github.wulkanowy.services.sync.channels.NewGradesChannel
@@ -9,17 +11,76 @@ import io.github.wulkanowy.services.sync.channels.NewMessagesChannel
 import io.github.wulkanowy.services.sync.channels.NewNotesChannel
 import io.github.wulkanowy.services.sync.channels.NewSchoolAnnouncementsChannel
 import io.github.wulkanowy.services.sync.channels.PushChannel
+import io.github.wulkanowy.services.sync.channels.TimetableChangeChannel
 
-enum class NotificationType(val group: String?, val channel: String) {
-    NEW_CONFERENCE("new_conferences_group", NewConferencesChannel.CHANNEL_ID),
-    NEW_EXAM("new_exam_group", NewExamChannel.CHANNEL_ID),
-    NEW_GRADE_DETAILS("new_grade_details_group", NewGradesChannel.CHANNEL_ID),
-    NEW_GRADE_PREDICTED("new_grade_predicted_group", NewGradesChannel.CHANNEL_ID),
-    NEW_GRADE_FINAL("new_grade_final_group", NewGradesChannel.CHANNEL_ID),
-    NEW_HOMEWORK("new_homework_group", NewHomeworkChannel.CHANNEL_ID),
-    NEW_LUCKY_NUMBER("lucky_number_group", LuckyNumberChannel.CHANNEL_ID),
-    NEW_MESSAGE("new_message_group", NewMessagesChannel.CHANNEL_ID),
-    NEW_NOTE("new_notes_group", NewNotesChannel.CHANNEL_ID),
-    NEW_ANNOUNCEMENT("new_school_announcements_group", NewSchoolAnnouncementsChannel.CHANNEL_ID),
-    PUSH(null, PushChannel.CHANNEL_ID)
+enum class NotificationType(
+    val group: String?,
+    val channel: String,
+    val icon: Int
+) {
+    NEW_CONFERENCE(
+        group = "new_conferences_group",
+        channel = NewConferencesChannel.CHANNEL_ID,
+        icon = R.drawable.ic_more_conferences,
+    ),
+    NEW_EXAM(
+        group = "new_exam_group",
+        channel = NewExamChannel.CHANNEL_ID,
+        icon = R.drawable.ic_main_exam
+    ),
+    NEW_GRADE_DETAILS(
+        group = "new_grade_details_group",
+        channel = NewGradesChannel.CHANNEL_ID,
+        icon = R.drawable.ic_stat_grade,
+    ),
+    NEW_GRADE_PREDICTED(
+        group = "new_grade_predicted_group",
+        channel = NewGradesChannel.CHANNEL_ID,
+        icon = R.drawable.ic_stat_grade,
+    ),
+    NEW_GRADE_FINAL(
+        group = "new_grade_final_group",
+        channel = NewGradesChannel.CHANNEL_ID,
+        icon = R.drawable.ic_stat_grade,
+    ),
+    NEW_HOMEWORK(
+        group = "new_homework_group",
+        channel = NewHomeworkChannel.CHANNEL_ID,
+        icon = R.drawable.ic_more_homework,
+    ),
+    NEW_LUCKY_NUMBER(
+        group = null,
+        channel = LuckyNumberChannel.CHANNEL_ID,
+        icon = R.drawable.ic_stat_luckynumber,
+    ),
+    NEW_MESSAGE(
+        group = "new_message_group",
+        channel = NewMessagesChannel.CHANNEL_ID,
+        icon = R.drawable.ic_stat_message,
+    ),
+    NEW_NOTE(
+        group = "new_notes_group",
+        channel = NewNotesChannel.CHANNEL_ID,
+        icon = R.drawable.ic_stat_note
+    ),
+    NEW_ANNOUNCEMENT(
+        group = "new_school_announcements_group",
+        channel = NewSchoolAnnouncementsChannel.CHANNEL_ID,
+        icon = R.drawable.ic_all_about
+    ),
+    CHANGE_TIMETABLE(
+        group = "change_timetable_group",
+        channel = TimetableChangeChannel.CHANNEL_ID,
+        icon = R.drawable.ic_main_timetable
+    ),
+    NEW_ATTENDANCE(
+        group = "new_attendance_group",
+        channel = NewAttendanceChannel.CHANNEL_ID,
+        icon = R.drawable.ic_main_attendance
+    ),
+    PUSH(
+        group = null,
+        channel = PushChannel.CHANNEL_ID,
+        icon = R.drawable.ic_stat_all
+    )
 }

app/src/main/java/io/github/wulkanowy/services/sync/works/AttendanceWork.kt

@@ -3,18 +3,40 @@ package io.github.wulkanowy.services.sync.works
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.repositories.AttendanceRepository
-import io.github.wulkanowy.utils.monday
-import io.github.wulkanowy.utils.sunday
+import io.github.wulkanowy.data.repositories.PreferencesRepository
+import io.github.wulkanowy.services.sync.notifications.NewAttendanceNotification
+import io.github.wulkanowy.utils.previousOrSameSchoolDay
 import io.github.wulkanowy.utils.waitForResult
+import kotlinx.coroutines.flow.first
 import java.time.LocalDate.now
 import javax.inject.Inject
 
 class AttendanceWork @Inject constructor(
-    private val attendanceRepository: AttendanceRepository
+    private val attendanceRepository: AttendanceRepository,
+    private val newAttendanceNotification: NewAttendanceNotification,
+    private val preferencesRepository: PreferencesRepository
 ) : Work {
 
     override suspend fun doWork(student: Student, semester: Semester) {
-        attendanceRepository.getAttendance(student, semester, now().monday, now().sunday, true)
+        attendanceRepository.getAttendance(
+            student = student,
+            semester = semester,
+            start = now().previousOrSameSchoolDay,
+            end = now().previousOrSameSchoolDay,
+            forceRefresh = true,
+            notify = preferencesRepository.isNotificationsEnable
+        )
             .waitForResult()
+
+        attendanceRepository.getAttendanceFromDatabase(semester, now().minusDays(7), now())
+            .first()
+            .filterNot { it.isNotified }
+            .let {
+                if (it.isNotEmpty()) newAttendanceNotification.notify(it, student)
+
+                attendanceRepository.updateTimetable(it.onEach { attendance ->
+                    attendance.isNotified = true
+                })
+            }
     }
 }

app/src/main/java/io/github/wulkanowy/services/sync/works/HomeworkWork.kt

@@ -5,8 +5,7 @@ import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.repositories.HomeworkRepository
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.services.sync.notifications.NewHomeworkNotification
-import io.github.wulkanowy.utils.monday
-import io.github.wulkanowy.utils.sunday
+import io.github.wulkanowy.utils.nextOrSameSchoolDay
 import io.github.wulkanowy.utils.waitForResult
 import kotlinx.coroutines.flow.first
 import java.time.LocalDate.now
@@ -22,13 +21,13 @@ class HomeworkWork @Inject constructor(
         homeworkRepository.getHomework(
             student = student,
             semester = semester,
-            start = now().monday,
-            end = now().sunday,
+            start = now().nextOrSameSchoolDay,
+            end = now().nextOrSameSchoolDay,
             forceRefresh = true,
             notify = preferencesRepository.isNotificationsEnable
         ).waitForResult()
 
-        homeworkRepository.getHomeworkFromDatabase(semester, now().monday, now().sunday).first()
+        homeworkRepository.getHomeworkFromDatabase(semester, now(), now().plusDays(7)).first()
             .filter { !it.isNotified }.let {
                 if (it.isNotEmpty()) newHomeworkNotification.notify(it, student)
 

app/src/main/java/io/github/wulkanowy/services/sync/works/TimetableWork.kt

@@ -2,18 +2,41 @@ package io.github.wulkanowy.services.sync.works
 
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.data.repositories.TimetableRepository
-import io.github.wulkanowy.utils.monday
-import io.github.wulkanowy.utils.sunday
+import io.github.wulkanowy.services.sync.notifications.ChangeTimetableNotification
+import io.github.wulkanowy.utils.nextOrSameSchoolDay
 import io.github.wulkanowy.utils.waitForResult
+import kotlinx.coroutines.flow.first
 import java.time.LocalDate.now
 import javax.inject.Inject
 
 class TimetableWork @Inject constructor(
-    private val timetableRepository: TimetableRepository
+    private val timetableRepository: TimetableRepository,
+    private val changeTimetableNotification: ChangeTimetableNotification,
+    private val preferencesRepository: PreferencesRepository
 ) : Work {
 
     override suspend fun doWork(student: Student, semester: Semester) {
-        timetableRepository.getTimetable(student, semester, now().monday, now().sunday, true).waitForResult()
+        timetableRepository.getTimetable(
+            student = student,
+            semester = semester,
+            start = now().nextOrSameSchoolDay,
+            end = now().nextOrSameSchoolDay,
+            forceRefresh = true,
+            notify = preferencesRepository.isNotificationsEnable
+        )
+            .waitForResult()
+
+        timetableRepository.getTimetableFromDatabase(semester, now(), now().plusDays(7))
+            .first()
+            .filterNot { it.isNotified }
+            .let {
+                if (it.isNotEmpty()) changeTimetableNotification.notify(it, student)
+
+                timetableRepository.updateTimetable(it.onEach { timetable ->
+                    timetable.isNotified = true
+                })
+            }
     }
 }

app/src/main/java/io/github/wulkanowy/ui/base/BaseActivity.kt

@@ -1,14 +1,11 @@
 package io.github.wulkanowy.ui.base
 
 import android.app.ActivityManager
-import android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK
-import android.content.Intent.FLAG_ACTIVITY_NEW_TASK
 import android.os.Bundle
 import android.view.View
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
-import androidx.appcompat.app.AppCompatDelegate
 import androidx.viewbinding.ViewBinding
 import com.google.android.material.snackbar.Snackbar
 import com.google.android.material.snackbar.Snackbar.LENGTH_LONG
@@ -40,7 +37,6 @@ abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
         themeManager.applyActivityTheme(this)
         super.onCreate(savedInstanceState)
         supportFragmentManager.registerFragmentLifecycleCallbacks(fragmentLifecycleLogger, true)
-        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true)
 
         @Suppress("DEPRECATION")
         setTaskDescription(
@@ -83,8 +79,8 @@ abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
     }
 
     override fun openClearLoginView() {
-        startActivity(LoginActivity.getStartIntent(this)
-            .apply { addFlags(FLAG_ACTIVITY_CLEAR_TASK or FLAG_ACTIVITY_NEW_TASK) })
+        startActivity(LoginActivity.getStartIntent(this))
+        finishAffinity()
     }
 
     override fun onDestroy() {

app/src/main/java/io/github/wulkanowy/ui/base/BaseFragmentPagerAdapter.kt

@@ -2,32 +2,33 @@ package io.github.wulkanowy.ui.base
 
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentManager
-import androidx.fragment.app.FragmentPagerAdapter
+import androidx.lifecycle.Lifecycle
+import androidx.viewpager2.adapter.FragmentStateAdapter
+import com.google.android.material.tabs.TabLayout
+import com.google.android.material.tabs.TabLayoutMediator
 
-//TODO  Use ViewPager2
-class BaseFragmentPagerAdapter(private val fragmentManager: FragmentManager) :
-    FragmentPagerAdapter(fragmentManager, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT) {
+class BaseFragmentPagerAdapter(
+    private val fragmentManager: FragmentManager,
+    private val pagesCount: Int,
+    lifecycle: Lifecycle,
+) : FragmentStateAdapter(fragmentManager, lifecycle), TabLayoutMediator.TabConfigurationStrategy {
 
-    private val pages = mutableMapOf<Fragment, String?>()
+    lateinit var itemFactory: (position: Int) -> Fragment
+
+    var titleFactory: (position: Int) -> String? = { "" }
 
     var containerId = 0
 
     fun getFragmentInstance(position: Int): Fragment? {
         require(containerId != 0) { "Container id is 0" }
-        return fragmentManager.findFragmentByTag("android:switcher:$containerId:$position")
+        return fragmentManager.findFragmentByTag("f$position")
     }
 
-    fun addFragments(fragments: List<Fragment>) {
-        fragments.forEach { pages[it] = null }
+    override fun createFragment(position: Int): Fragment = itemFactory(position)
+
+    override fun getItemCount() = pagesCount
+
+    override fun onConfigureTab(tab: TabLayout.Tab, position: Int) {
+        tab.text = titleFactory(position)
     }
-
-    fun addFragmentsWithTitle(pages: Map<Fragment, String>) {
-        this.pages.putAll(pages)
-    }
-
-    override fun getItem(position: Int) = pages.keys.elementAt(position)
-
-    override fun getCount() = pages.size
-
-    override fun getPageTitle(position: Int) = pages.values.elementAt(position)
 }

app/src/main/java/io/github/wulkanowy/ui/base/BasePresenter.kt

@@ -6,29 +6,27 @@ import io.github.wulkanowy.utils.flowWithResource
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.Job
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancelChildren
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import timber.log.Timber
-import kotlin.coroutines.CoroutineContext
 
 open class BasePresenter<T : BaseView>(
     protected val errorHandler: ErrorHandler,
     protected val studentRepository: StudentRepository
-) : CoroutineScope {
+) {
+    private val job = SupervisorJob()
 
-    private var job = Job()
+    protected val presenterScope = CoroutineScope(job + Dispatchers.Main)
 
-    private val jobs = mutableMapOf<String, Job>()
-
-    override val coroutineContext: CoroutineContext
-        get() = Dispatchers.Main + job
+    private val childrenJobs = mutableMapOf<String, Job>()
 
     var view: T? = null
 
     open fun onAttachView(view: T) {
-        job = Job()
         this.view = view
         errorHandler.apply {
             showErrorMessage = view::showError
@@ -64,22 +62,22 @@ open class BasePresenter<T : BaseView>(
     }
 
     fun <T> Flow<T>.launch(individualJobTag: String = "load"): Job {
-        jobs[individualJobTag]?.cancel()
-        val job = catch { errorHandler.dispatch(it) }.launchIn(this@BasePresenter)
-        jobs[individualJobTag] = job
+        childrenJobs[individualJobTag]?.cancel()
+        val job = catch { errorHandler.dispatch(it) }.launchIn(presenterScope)
+        childrenJobs[individualJobTag] = job
         Timber.d("Job $individualJobTag launched in ${this@BasePresenter.javaClass.simpleName}: $job")
         return job
     }
 
     fun cancelJobs(vararg names: String) {
         names.forEach {
-            jobs[it]?.cancel()
+            childrenJobs[it]?.cancel()
         }
     }
 
     open fun onDetachView() {
-        view = null
-        job.cancel()
+        job.cancelChildren()
         errorHandler.clear()
+        view = null
     }
 }

app/src/main/java/io/github/wulkanowy/ui/base/ErrorDialog.kt

@@ -11,6 +11,7 @@ import android.widget.Toast
 import android.widget.Toast.LENGTH_LONG
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.getSystemService
+import androidx.core.view.isGone
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.databinding.DialogErrorBinding
@@ -24,8 +25,6 @@ import io.github.wulkanowy.utils.openEmailClient
 import io.github.wulkanowy.utils.openInternetBrowser
 import okhttp3.internal.http2.StreamResetException
 import java.io.InterruptedIOException
-import java.io.PrintWriter
-import java.io.StringWriter
 import java.net.ConnectException
 import java.net.SocketTimeoutException
 import java.net.UnknownHostException
@@ -64,26 +63,26 @@ class ErrorDialog : BaseDialogFragment<DialogErrorBinding>() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        val stringWriter = StringWriter().apply {
-            error.printStackTrace(PrintWriter(this))
-        }
+        val errorStacktrace = error.stackTraceToString()
 
         with(binding) {
-            errorDialogContent.text = stringWriter.toString()
+            errorDialogContent.text = errorStacktrace.replace(": ${error.localizedMessage}", "")
             with(errorDialogHorizontalScroll) {
                 post { fullScroll(HorizontalScrollView.FOCUS_LEFT) }
             }
             errorDialogCopy.setOnClickListener {
-                val clip = ClipData.newPlainText("wulkanowy", stringWriter.toString())
+                val clip = ClipData.newPlainText("Error details", errorStacktrace)
                 activity?.getSystemService<ClipboardManager>()?.setPrimaryClip(clip)
 
                 Toast.makeText(context, R.string.all_copied, LENGTH_LONG).show()
             }
             errorDialogCancel.setOnClickListener { dismiss() }
             errorDialogReport.setOnClickListener {
-                openConfirmDialog { openEmailClient(stringWriter.toString()) }
+                openConfirmDialog { openEmailClient(errorStacktrace) }
             }
-            errorDialogMessage.text = resources.getString(error)
+            errorDialogHumanizedMessage.text = resources.getString(error)
+            errorDialogErrorMessage.text = error.localizedMessage
+            errorDialogErrorMessage.isGone = error.localizedMessage.isNullOrBlank()
             errorDialogReport.isEnabled = when (error) {
                 is UnknownHostException,
                 is InterruptedIOException,

app/src/main/java/io/github/wulkanowy/ui/base/ErrorHandler.kt

@@ -1,6 +1,7 @@
 package io.github.wulkanowy.ui.base
 
-import android.content.res.Resources
+import android.content.Context
+import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.data.exceptions.NoCurrentStudentException
 import io.github.wulkanowy.sdk.scrapper.login.BadCredentialsException
 import io.github.wulkanowy.sdk.scrapper.login.PasswordChangeRequiredException
@@ -9,7 +10,7 @@ import io.github.wulkanowy.utils.security.ScramblerException
 import timber.log.Timber
 import javax.inject.Inject
 
-open class ErrorHandler @Inject constructor(protected val resources: Resources) {
+open class ErrorHandler @Inject constructor(@ApplicationContext protected val context: Context) {
 
     var showErrorMessage: (String, Throwable) -> Unit = { _, _ -> }
 
@@ -25,7 +26,7 @@ open class ErrorHandler @Inject constructor(protected val resources: Resources)
     }
 
     protected open fun proceed(error: Throwable) {
-        showErrorMessage(resources.getString(error), error)
+        showErrorMessage(context.resources.getString(error), error)
         when (error) {
             is PasswordChangeRequiredException -> onPasswordChangeRequired(error.redirectUrl)
             is ScramblerException, is BadCredentialsException -> onSessionExpired()

app/src/main/java/io/github/wulkanowy/ui/base/ThemeManager.kt

@@ -41,14 +41,15 @@ class ThemeManager @Inject constructor(private val preferencesRepository: Prefer
         )
     }
 
-    private fun isThemeApplicable(activity: AppCompatActivity): Boolean {
-        return activity.packageManager
+    private fun isThemeApplicable(activity: AppCompatActivity) =
+        activity.packageManager
             .getPackageInfo(activity.packageName, GET_ACTIVITIES)
-            .activities.singleOrNull { it.name == activity::class.java.canonicalName }
-            ?.theme.let {
+            .activities
+            .singleOrNull { it.name == activity::class.java.canonicalName }
+            ?.theme
+            .let {
                 it == R.style.WulkanowyTheme_Black || it == R.style.WulkanowyTheme_NoActionBar
                     || it == R.style.WulkanowyTheme_Login || it == R.style.WulkanowyTheme_Login_Black
                     || it == R.style.WulkanowyTheme_MessageSend || it == R.style.WulkanowyTheme_MessageSend_Black
             }
-    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/Destination.kt

@@ -0,0 +1,136 @@
+package io.github.wulkanowy.ui.modules
+
+import androidx.fragment.app.Fragment
+import io.github.wulkanowy.ui.modules.attendance.AttendanceFragment
+import io.github.wulkanowy.ui.modules.conference.ConferenceFragment
+import io.github.wulkanowy.ui.modules.dashboard.DashboardFragment
+import io.github.wulkanowy.ui.modules.exam.ExamFragment
+import io.github.wulkanowy.ui.modules.grade.GradeFragment
+import io.github.wulkanowy.ui.modules.homework.HomeworkFragment
+import io.github.wulkanowy.ui.modules.luckynumber.LuckyNumberFragment
+import io.github.wulkanowy.ui.modules.message.MessageFragment
+import io.github.wulkanowy.ui.modules.more.MoreFragment
+import io.github.wulkanowy.ui.modules.note.NoteFragment
+import io.github.wulkanowy.ui.modules.schoolandteachers.school.SchoolFragment
+import io.github.wulkanowy.ui.modules.schoolannouncement.SchoolAnnouncementFragment
+import io.github.wulkanowy.ui.modules.timetable.TimetableFragment
+import java.io.Serializable
+import java.time.LocalDate
+
+sealed interface Destination : Serializable {
+
+    /*
+    Type in children classes have to be as getter to avoid null in enums
+    https://stackoverflow.com/questions/68866453/kotlin-enum-val-is-returning-null-despite-being-set-at-compile-time
+    */
+    val type: Type
+
+    val fragment: Fragment
+
+    enum class Type(val defaultDestination: Destination) {
+        DASHBOARD(Dashboard),
+        GRADE(Grade),
+        ATTENDANCE(Attendance),
+        EXAM(Exam),
+        TIMETABLE(Timetable()),
+        HOMEWORK(Homework),
+        NOTE(Note),
+        CONFERENCE(Conference),
+        SCHOOL_ANNOUNCEMENT(SchoolAnnouncement),
+        SCHOOL(School),
+        LUCKY_NUMBER(More),
+        MORE(More),
+        MESSAGE(Message);
+    }
+
+    object Dashboard : Destination {
+
+        override val type get() = Type.DASHBOARD
+
+        override val fragment get() = DashboardFragment.newInstance()
+    }
+
+    object Grade : Destination {
+
+        override val type get() = Type.GRADE
+
+        override val fragment get() = GradeFragment.newInstance()
+    }
+
+    object Attendance : Destination {
+
+        override val type get() = Type.ATTENDANCE
+
+        override val fragment get() = AttendanceFragment.newInstance()
+    }
+
+    object Exam : Destination {
+
+        override val type get() = Type.EXAM
+
+        override val fragment get() = ExamFragment.newInstance()
+    }
+
+    data class Timetable(val date: LocalDate? = null) : Destination {
+
+        override val type get() = Type.TIMETABLE
+
+        override val fragment get() = TimetableFragment.newInstance(date)
+    }
+
+    object Homework : Destination {
+
+        override val type get() = Type.HOMEWORK
+
+        override val fragment get() = HomeworkFragment.newInstance()
+    }
+
+    object Note : Destination {
+
+        override val type get() = Type.NOTE
+
+        override val fragment get() = NoteFragment.newInstance()
+    }
+
+    object Conference : Destination {
+
+        override val type get() = Type.CONFERENCE
+
+        override val fragment get() = ConferenceFragment.newInstance()
+    }
+
+    object SchoolAnnouncement : Destination {
+
+        override val type get() = Type.SCHOOL_ANNOUNCEMENT
+
+        override val fragment get() = SchoolAnnouncementFragment.newInstance()
+    }
+
+    object School : Destination {
+
+        override val type get() = Type.SCHOOL
+
+        override val fragment get() = SchoolFragment.newInstance()
+    }
+
+    object LuckyNumber : Destination {
+
+        override val type get() = Type.LUCKY_NUMBER
+
+        override val fragment get() = LuckyNumberFragment.newInstance()
+    }
+
+    object More : Destination {
+
+        override val type get() = Type.MORE
+
+        override val fragment get() = MoreFragment.newInstance()
+    }
+
+    object Message : Destination {
+
+        override val type get() = Type.MESSAGE
+
+        override val fragment get() = MessageFragment.newInstance()
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/about/AboutPresenter.kt

@@ -82,18 +82,20 @@ class AboutPresenter @Inject constructor(
 
     private fun loadData() {
         view?.run {
-            updateData(listOfNotNull(
-                versionRes,
-                creatorsRes,
-                feedbackRes,
-                faqRes,
-                discordRes,
-                facebookRes,
-                twitterRes,
-                homepageRes,
-                licensesRes,
-                privacyRes
-            ))
+            updateData(
+                listOfNotNull(
+                    versionRes,
+                    creatorsRes,
+                    feedbackRes,
+                    faqRes,
+                    discordRes,
+                    facebookRes,
+                    twitterRes,
+                    homepageRes,
+                    licensesRes,
+                    privacyRes
+                )
+            )
         }
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/about/license/LicensePresenter.kt

@@ -31,7 +31,7 @@ class LicensePresenter @Inject constructor(
 
     private fun loadData() {
         flowWithResource {
-            withContext(dispatchers.backgroundThread) {
+            withContext(dispatchers.io) {
                 view?.appLibraries.orEmpty()
             }
         }.onEach {

app/src/main/java/io/github/wulkanowy/ui/modules/account/accountedit/AccountEditColorAdapter.kt

@@ -3,12 +3,9 @@ package io.github.wulkanowy.ui.modules.account.accountedit
 import android.annotation.SuppressLint
 import android.content.res.ColorStateList
 import android.graphics.Color
-import android.graphics.drawable.ColorDrawable
 import android.graphics.drawable.Drawable
 import android.graphics.drawable.GradientDrawable
 import android.graphics.drawable.RippleDrawable
-import android.graphics.drawable.StateListDrawable
-import android.os.Build
 import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.core.view.isVisible
@@ -52,30 +49,13 @@ class AccountEditColorAdapter @Inject constructor() :
         }
     }
 
-    private fun Int.createForegroundDrawable(): Drawable =
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
-            val mask = GradientDrawable().apply {
-                shape = GradientDrawable.OVAL
-                setColor(Color.BLACK)
-            }
-            RippleDrawable(ColorStateList.valueOf(this.rippleColor), null, mask)
-        } else {
-            val foreground = StateListDrawable().apply {
-                alpha = 80
-                setEnterFadeDuration(250)
-                setExitFadeDuration(250)
-            }
-
-            val mask = GradientDrawable().apply {
-                shape = GradientDrawable.OVAL
-                setColor(this@createForegroundDrawable.rippleColor)
-            }
-
-            foreground.apply {
-                addState(intArrayOf(android.R.attr.state_pressed), mask)
-                addState(intArrayOf(), ColorDrawable(Color.TRANSPARENT))
-            }
+    private fun Int.createForegroundDrawable(): Drawable {
+        val mask = GradientDrawable().apply {
+            shape = GradientDrawable.OVAL
+            setColor(Color.BLACK)
         }
+        return RippleDrawable(ColorStateList.valueOf(this.rippleColor), null, mask)
+    }
 
     private inline val Int.rippleColor: Int
         get() {

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendanceAdapter.kt

@@ -9,7 +9,7 @@ import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.data.enums.SentExcuseStatus
 import io.github.wulkanowy.databinding.ItemAttendanceBinding
-import io.github.wulkanowy.utils.description
+import io.github.wulkanowy.utils.descriptionRes
 import io.github.wulkanowy.utils.isExcusableOrNotExcused
 import javax.inject.Inject
 
@@ -36,7 +36,7 @@ class AttendanceAdapter @Inject constructor() :
         with(holder.binding) {
             attendanceItemNumber.text = item.number.toString()
             attendanceItemSubject.text = item.subject
-            attendanceItemDescription.setText(item.description)
+            attendanceItemDescription.setText(item.descriptionRes)
             attendanceItemAlert.visibility = item.run { if (absence && !excused) View.VISIBLE else View.INVISIBLE }
             attendanceItemNumber.visibility = View.GONE
             attendanceItemExcuseInfo.visibility = View.GONE
@@ -46,7 +46,7 @@ class AttendanceAdapter @Inject constructor() :
                 onExcuseCheckboxSelect(item, checked)
             }
 
-            when (if (item.excuseStatus != null) SentExcuseStatus.valueOf(item.excuseStatus) else null) {
+            when (item.excuseStatus?.let { SentExcuseStatus.valueOf(it)}) {
                 SentExcuseStatus.WAITING -> {
                     attendanceItemExcuseInfo.setImageResource(R.drawable.ic_excuse_waiting)
                     attendanceItemExcuseInfo.visibility = View.VISIBLE

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendanceDialog.kt

@@ -7,7 +7,7 @@ import android.view.ViewGroup
 import androidx.fragment.app.DialogFragment
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.databinding.DialogAttendanceBinding
-import io.github.wulkanowy.utils.description
+import io.github.wulkanowy.utils.descriptionRes
 import io.github.wulkanowy.utils.lifecycleAwareVariable
 import io.github.wulkanowy.utils.toFormattedString
 
@@ -45,7 +45,7 @@ class AttendanceDialog : DialogFragment() {
 
         with(binding) {
             attendanceDialogSubjectValue.text = attendance.subject
-            attendanceDialogDescriptionValue.setText(attendance.description)
+            attendanceDialogDescriptionValue.setText(attendance.descriptionRes)
             attendanceDialogDateValue.text = attendance.date.toFormattedString()
             attendanceDialogNumberValue.text = attendance.number.toString()
             attendanceDialogClose.setOnClickListener { dismiss() }

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendanceFragment.kt

@@ -12,6 +12,7 @@ import android.view.View.INVISIBLE
 import android.view.View.VISIBLE
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.view.ActionMode
+import androidx.core.view.isVisible
 import androidx.recyclerview.widget.LinearLayoutManager
 import com.google.android.material.datepicker.CalendarConstraints
 import com.google.android.material.datepicker.MaterialDatePicker
@@ -121,9 +122,7 @@ class AttendanceFragment : BaseFragment<FragmentAttendanceBinding>(R.layout.frag
             attendanceSwipe.setOnRefreshListener(presenter::onSwipeRefresh)
             attendanceSwipe.setColorSchemeColors(requireContext().getThemeAttrColor(R.attr.colorPrimary))
             attendanceSwipe.setProgressBackgroundColorSchemeColor(
-                requireContext().getThemeAttrColor(
-                    R.attr.colorSwipeRefresh
-                )
+                requireContext().getThemeAttrColor(R.attr.colorSwipeRefresh)
             )
             attendanceErrorRetry.setOnClickListener { presenter.onRetry() }
             attendanceErrorDetails.setOnClickListener { presenter.onDetailsClick() }
@@ -134,7 +133,7 @@ class AttendanceFragment : BaseFragment<FragmentAttendanceBinding>(R.layout.frag
 
             attendanceExcuseButton.setOnClickListener { presenter.onExcuseButtonClick() }
 
-            attendanceNavContainer.setElevationCompat(requireContext().dpToPx(8f))
+            attendanceNavContainer.elevation = requireContext().dpToPx(8f)
         }
     }
 
@@ -218,7 +217,7 @@ class AttendanceFragment : BaseFragment<FragmentAttendanceBinding>(R.layout.frag
     }
 
     override fun showExcuseButton(show: Boolean) {
-        binding.attendanceExcuseButton.visibility = if (show) VISIBLE else GONE
+        binding.attendanceExcuseButton.isVisible = show
     }
 
     override fun showAttendanceDialog(lesson: Attendance) {
@@ -289,12 +288,16 @@ class AttendanceFragment : BaseFragment<FragmentAttendanceBinding>(R.layout.frag
     }
 
     override fun showExcuseCheckboxes(show: Boolean) {
-        attendanceAdapter.apply {
+        with(attendanceAdapter) {
             excuseActionMode = show
             notifyDataSetChanged()
         }
     }
 
+    override fun showDayNavigation(show: Boolean) {
+        binding.attendanceNavContainer.isVisible = show
+    }
+
     override fun finishActionMode() {
         actionMode?.finish()
     }

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendancePresenter.kt

@@ -174,6 +174,8 @@ class AttendancePresenter @Inject constructor(
         view?.apply {
             showExcuseCheckboxes(true)
             showExcuseButton(false)
+            enableSwipe(false)
+            showDayNavigation(false)
         }
         attendanceToExcuseList.clear()
         return true
@@ -183,6 +185,8 @@ class AttendancePresenter @Inject constructor(
         view?.apply {
             showExcuseCheckboxes(false)
             showExcuseButton(true)
+            enableSwipe(true)
+            showDayNavigation(true)
         }
     }
 
@@ -259,9 +263,8 @@ class AttendancePresenter @Inject constructor(
                         showEmpty(filteredAttendance.isEmpty())
                         showErrorView(false)
                         showContent(filteredAttendance.isNotEmpty())
-                        showExcuseButton(filteredAttendance.any { item ->
-                            (!isParent && isVulcanExcusedFunctionEnabled) || (isParent && item.isExcusableOrNotExcused)
-                        })
+                        val anyExcusables = filteredAttendance.any { it.isExcusableOrNotExcused }
+                        showExcuseButton(anyExcusables && (isParent || isVulcanExcusedFunctionEnabled))
                     }
                     analytics.logEvent(
                         "load_data",

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendanceView.kt

@@ -60,6 +60,8 @@ interface AttendanceView : BaseView {
 
     fun showExcuseCheckboxes(show: Boolean)
 
+    fun showDayNavigation(show: Boolean)
+
     fun finishActionMode()
 
     fun popView()

app/src/main/java/io/github/wulkanowy/ui/modules/attendance/summary/AttendanceSummaryFragment.kt

@@ -71,7 +71,7 @@ class AttendanceSummaryFragment :
             setOnItemSelectedListener<TextView> { presenter.onSubjectSelected(it?.text?.toString()) }
         }
 
-        binding.attendanceSummarySubjectsContainer.setElevationCompat(requireContext().dpToPx(1f))
+        binding.attendanceSummarySubjectsContainer.elevation = requireContext().dpToPx(1f)
     }
 
     override fun updateSubjects(data: ArrayList<String>) {

app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardAdapter.kt

@@ -1,6 +1,8 @@
 package io.github.wulkanowy.ui.modules.dashboard
 
 import android.annotation.SuppressLint
+import android.content.res.ColorStateList
+import android.graphics.Color
 import android.graphics.Typeface
 import android.os.Handler
 import android.os.Looper
@@ -18,6 +20,7 @@ import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.Timetable
 import io.github.wulkanowy.data.db.entities.TimetableHeader
 import io.github.wulkanowy.databinding.ItemDashboardAccountBinding
+import io.github.wulkanowy.databinding.ItemDashboardAdminMessageBinding
 import io.github.wulkanowy.databinding.ItemDashboardAnnouncementsBinding
 import io.github.wulkanowy.databinding.ItemDashboardConferencesBinding
 import io.github.wulkanowy.databinding.ItemDashboardExamsBinding
@@ -63,6 +66,8 @@ class DashboardAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
 
     var onConferencesTileClickListener: () -> Unit = {}
 
+    var onAdminMessageClickListener: (String?) -> Unit = {}
+
     val items = mutableListOf<DashboardItem>()
 
     fun submitList(newItems: List<DashboardItem>) {
@@ -109,6 +114,9 @@ class DashboardAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
             DashboardItem.Type.CONFERENCES.ordinal -> ConferencesViewHolder(
                 ItemDashboardConferencesBinding.inflate(inflater, parent, false)
             )
+            DashboardItem.Type.ADMIN_MESSAGE.ordinal -> AdminMessageViewHolder(
+                ItemDashboardAdminMessageBinding.inflate(inflater, parent, false)
+            )
             else -> throw IllegalArgumentException()
         }
     }
@@ -123,6 +131,7 @@ class DashboardAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
             is AnnouncementsViewHolder -> bindAnnouncementsViewHolder(holder, position)
             is ExamsViewHolder -> bindExamsViewHolder(holder, position)
             is ConferencesViewHolder -> bindConferencesViewHolder(holder, position)
+            is AdminMessageViewHolder -> bindAdminMessage(holder, position)
         }
     }
 
@@ -290,7 +299,8 @@ class DashboardAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
             val currentDayHeader =
                 timetableFull?.headers.orEmpty().singleOrNull { it.date == currentDate }
 
-            val tomorrowTimetable = timetableFull?.lessons.orEmpty()
+            val tomorrowTimetable = timetableFull?.lessons
+                .orEmpty()
                 .filter { it.date == currentDate.plusDays(1) }
                 .filterNot { it.canceled }
             val tomorrowDayHeader =
@@ -301,26 +311,31 @@ class DashboardAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
                     dateToNavigate = currentDate
                     updateLessonView(item, currentTimetable, binding)
                     binding.dashboardLessonsItemTitleTomorrow.isVisible = false
+                    binding.dashboardLessonsItemTitleTodayAndTomorrow.isVisible = false
                 }
                 tomorrowTimetable.isNotEmpty() -> {
                     dateToNavigate = tomorrowDate
                     updateLessonView(item, tomorrowTimetable, binding)
                     binding.dashboardLessonsItemTitleTomorrow.isVisible = true
+                    binding.dashboardLessonsItemTitleTodayAndTomorrow.isVisible = false
                 }
                 currentDayHeader != null && currentDayHeader.content.isNotBlank() -> {
                     dateToNavigate = currentDate
                     updateLessonView(item, emptyList(), binding, currentDayHeader)
                     binding.dashboardLessonsItemTitleTomorrow.isVisible = false
+                    binding.dashboardLessonsItemTitleTodayAndTomorrow.isVisible = false
                 }
                 tomorrowDayHeader != null && tomorrowDayHeader.content.isNotBlank() -> {
                     dateToNavigate = tomorrowDate
                     updateLessonView(item, emptyList(), binding, tomorrowDayHeader)
                     binding.dashboardLessonsItemTitleTomorrow.isVisible = true
+                    binding.dashboardLessonsItemTitleTodayAndTomorrow.isVisible = false
                 }
                 else -> {
-                    dateToNavigate = tomorrowDate
+                    dateToNavigate = currentDate
                     updateLessonView(item, emptyList(), binding)
-                    binding.dashboardLessonsItemTitleTomorrow.isVisible =
+                    binding.dashboardLessonsItemTitleTomorrow.isVisible = false
+                    binding.dashboardLessonsItemTitleTodayAndTomorrow.isVisible =
                         !(item.isLoading && item.error == null)
                 }
             }
@@ -692,6 +707,34 @@ class DashboardAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
         }
     }
 
+    private fun bindAdminMessage(adminMessageViewHolder: AdminMessageViewHolder, position: Int) {
+        val item = (items[position] as DashboardItem.AdminMessages).adminMessage ?: return
+        val context = adminMessageViewHolder.binding.root.context
+        val (backgroundColor, textColor) = when (item.priority) {
+            "HIGH" -> {
+                context.getThemeAttrColor(R.attr.colorPrimary) to
+                    context.getThemeAttrColor(R.attr.colorOnPrimary)
+            }
+            "MEDIUM" -> {
+                context.getThemeAttrColor(R.attr.colorMessageMedium) to Color.BLACK
+            }
+            else -> null to context.getThemeAttrColor(R.attr.colorOnSurface)
+        }
+
+        with(adminMessageViewHolder.binding) {
+            dashboardAdminMessageItemTitle.text = item.title
+            dashboardAdminMessageItemTitle.setTextColor(textColor)
+            dashboardAdminMessageItemDescription.text = item.content
+            dashboardAdminMessageItemDescription.setTextColor(textColor)
+            dashboardAdminMessageItemIcon.setColorFilter(textColor)
+
+            root.setCardBackgroundColor(backgroundColor?.let { ColorStateList.valueOf(it) })
+            item.destinationUrl?.let { url ->
+                root.setOnClickListener { onAdminMessageClickListener(url) }
+            }
+        }
+    }
+
     class AccountViewHolder(val binding: ItemDashboardAccountBinding) :
         RecyclerView.ViewHolder(binding.root)
 
@@ -731,6 +774,9 @@ class DashboardAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
         val adapter by lazy { DashboardConferencesAdapter() }
     }
 
+    class AdminMessageViewHolder(val binding: ItemDashboardAdminMessageBinding) :
+        RecyclerView.ViewHolder(binding.root)
+
     private class DiffCallback(
         private val newList: List<DashboardItem>,
         private val oldList: List<DashboardItem>

app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardFragment.kt

@@ -10,6 +10,7 @@ import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DefaultItemAnimator
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.databinding.FragmentDashboardBinding
@@ -29,6 +30,7 @@ import io.github.wulkanowy.ui.modules.schoolannouncement.SchoolAnnouncementFragm
 import io.github.wulkanowy.ui.modules.timetable.TimetableFragment
 import io.github.wulkanowy.utils.capitalise
 import io.github.wulkanowy.utils.getThemeAttrColor
+import io.github.wulkanowy.utils.openInternetBrowser
 import io.github.wulkanowy.utils.toFormattedString
 import java.time.LocalDate
 import javax.inject.Inject
@@ -97,6 +99,13 @@ class DashboardFragment : BaseFragment<FragmentDashboardBinding>(R.layout.fragme
             onConferencesTileClickListener = {
                 mainActivity.pushView(ConferenceFragment.newInstance())
             }
+            onAdminMessageClickListener = presenter::onAdminMessageSelected
+
+            registerAdapterDataObserver(object : RecyclerView.AdapterDataObserver() {
+                override fun onItemRangeInserted(positionStart: Int, itemCount: Int) {
+                    binding.dashboardRecycler.scrollToPosition(0)
+                }
+            })
         }
 
         with(binding) {
@@ -188,6 +197,10 @@ class DashboardFragment : BaseFragment<FragmentDashboardBinding>(R.layout.fragme
         (requireActivity() as MainActivity).pushView(NotificationsCenterFragment.newInstance())
     }
 
+    override fun openInternetBrowser(url: String) {
+        requireContext().openInternetBrowser(url)
+    }
+
     override fun onDestroyView() {
         dashboardAdapter.clearTimers()
         presenter.onDetachView()

app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardItem.kt

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.dashboard
 
+import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.data.db.entities.Conference
 import io.github.wulkanowy.data.db.entities.Exam
 import io.github.wulkanowy.data.db.entities.Grade
@@ -16,6 +17,15 @@ sealed class DashboardItem(val type: Type) {
 
     abstract val isDataLoaded: Boolean
 
+    data class AdminMessages(
+        val adminMessage: AdminMessage? = null,
+        override val error: Throwable? = null,
+        override val isLoading: Boolean = false
+    ) : DashboardItem(Type.ADMIN_MESSAGE) {
+
+        override val isDataLoaded get() = adminMessage != null
+    }
+
     data class Account(
         val student: Student? = null,
         override val error: Throwable? = null,
@@ -96,6 +106,7 @@ sealed class DashboardItem(val type: Type) {
     }
 
     enum class Type {
+        ADMIN_MESSAGE,
         ACCOUNT,
         HORIZONTAL_GROUP,
         LESSONS,
@@ -108,6 +119,7 @@ sealed class DashboardItem(val type: Type) {
     }
 
     enum class Tile {
+        ADMIN_MESSAGE,
         ACCOUNT,
         LUCKY_NUMBER,
         MESSAGES,
@@ -123,6 +135,7 @@ sealed class DashboardItem(val type: Type) {
 }
 
 fun DashboardItem.Tile.toDashboardItemType() = when (this) {
+    DashboardItem.Tile.ADMIN_MESSAGE -> DashboardItem.Type.ADMIN_MESSAGE
     DashboardItem.Tile.ACCOUNT -> DashboardItem.Type.ACCOUNT
     DashboardItem.Tile.LUCKY_NUMBER -> DashboardItem.Type.HORIZONTAL_GROUP
     DashboardItem.Tile.MESSAGES -> DashboardItem.Type.HORIZONTAL_GROUP

app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardItemMoveCallback.kt

@@ -21,7 +21,7 @@ class DashboardItemMoveCallback(
         recyclerView: RecyclerView,
         viewHolder: RecyclerView.ViewHolder
     ): Int {
-        val dragFlags = if (viewHolder.bindingAdapterPosition != 0) {
+        val dragFlags = if (!viewHolder.isAdminMessageOrAccountItem) {
             ItemTouchHelper.UP or ItemTouchHelper.DOWN
         } else 0
 
@@ -32,7 +32,7 @@ class DashboardItemMoveCallback(
         recyclerView: RecyclerView,
         current: RecyclerView.ViewHolder,
         target: RecyclerView.ViewHolder
-    ) = target.bindingAdapterPosition != 0
+    ) = !target.isAdminMessageOrAccountItem
 
     override fun onMove(
         recyclerView: RecyclerView,
@@ -52,4 +52,7 @@ class DashboardItemMoveCallback(
 
         onUserInteractionEndListener(dashboardAdapter.items.toList())
     }
+
+    private val RecyclerView.ViewHolder.isAdminMessageOrAccountItem: Boolean
+        get() = this is DashboardAdapter.AdminMessageViewHolder || this is DashboardAdapter.AccountViewHolder
 }

app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardPresenter.kt

@@ -5,6 +5,7 @@ import io.github.wulkanowy.data.Status
 import io.github.wulkanowy.data.db.entities.LuckyNumber
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.enums.MessageFolder
+import io.github.wulkanowy.data.repositories.AdminMessageRepository
 import io.github.wulkanowy.data.repositories.AttendanceSummaryRepository
 import io.github.wulkanowy.data.repositories.ConferenceRepository
 import io.github.wulkanowy.data.repositories.ExamRepository
@@ -50,7 +51,8 @@ class DashboardPresenter @Inject constructor(
     private val examRepository: ExamRepository,
     private val conferenceRepository: ConferenceRepository,
     private val preferencesRepository: PreferencesRepository,
-    private val schoolAnnouncementRepository: SchoolAnnouncementRepository
+    private val schoolAnnouncementRepository: SchoolAnnouncementRepository,
+    private val adminMessageRepository: AdminMessageRepository
 ) : BasePresenter<DashboardView>(errorHandler, studentRepository) {
 
     private val dashboardItemLoadedList = mutableListOf<DashboardItem>()
@@ -149,7 +151,7 @@ class DashboardPresenter @Inject constructor(
         tileList: List<DashboardItem.Type>,
         forceRefresh: Boolean
     ) {
-        launch {
+        presenterScope.launch {
             Timber.i("Loading dashboard account data started")
             val student = runCatching { studentRepository.getCurrentStudent(true) }
                 .onFailure {
@@ -179,6 +181,7 @@ class DashboardPresenter @Inject constructor(
                         loadConferences(student, forceRefresh)
                     }
                     DashboardItem.Type.ADS -> TODO()
+                    DashboardItem.Type.ADMIN_MESSAGE -> loadAdminMessage(student, forceRefresh)
                 }
             }
         }
@@ -225,6 +228,10 @@ class DashboardPresenter @Inject constructor(
         }.toSet()
     }
 
+    fun onAdminMessageSelected(url: String?) {
+        url?.let { view?.openInternetBrowser(it) }
+    }
+
     private fun loadHorizontalGroup(student: Student, forceRefresh: Boolean) {
         flow {
             val semester = semesterRepository.getCurrentSemester(student)
@@ -309,18 +316,17 @@ class DashboardPresenter @Inject constructor(
 
             gradeRepository.getGrades(student, semester, forceRefresh)
         }.map { originalResource ->
-            val filteredSubjectWithGrades = originalResource.data?.first.orEmpty()
-                .filter { grade ->
-                    grade.date.isAfter(LocalDate.now().minusDays(7))
-                }
-                .groupBy { grade -> grade.subject }
+            val filteredSubjectWithGrades = originalResource.data?.first
+                .orEmpty()
+                .filter { it.date >= LocalDate.now().minusDays(7) }
+                .groupBy { it.subject }
                 .mapValues { entry ->
                     entry.value
                         .take(5)
-                        .sortedBy { grade -> grade.date }
+                        .sortedByDescending { it.date }
                 }
                 .toList()
-                .sortedBy { subjectWithGrades -> subjectWithGrades.second[0].date }
+                .sortedByDescending { (_, grades) -> grades[0].date }
                 .toMap()
 
             Resource(
@@ -424,9 +430,9 @@ class DashboardPresenter @Inject constructor(
         }.map { homeworkResource ->
             val currentDate = LocalDate.now()
 
-            val filteredHomework = homeworkResource.data?.filter {
-                (it.date.isAfter(currentDate) || it.date == currentDate) && !it.isDone
-            }
+            val filteredHomework = homeworkResource.data
+                ?.filter { (it.date.isAfter(currentDate) || it.date == currentDate) && !it.isDone }
+                ?.sortedBy { it.date }
 
             homeworkResource.copy(data = filteredHomework)
         }.onEach {
@@ -567,6 +573,38 @@ class DashboardPresenter @Inject constructor(
         }.launch("dashboard_conferences")
     }
 
+    private fun loadAdminMessage(student: Student, forceRefresh: Boolean) {
+        flowWithResourceIn { adminMessageRepository.getAdminMessages(student, forceRefresh) }
+            .onEach {
+                when (it.status) {
+                    Status.LOADING -> {
+                        Timber.i("Loading dashboard admin message data started")
+                        if (forceRefresh) return@onEach
+                        updateData(DashboardItem.AdminMessages(), forceRefresh)
+                    }
+                    Status.SUCCESS -> {
+                        Timber.i("Loading dashboard admin message result: Success")
+                        updateData(
+                            dashboardItem = DashboardItem.AdminMessages(adminMessage = it.data),
+                            forceRefresh = forceRefresh
+                        )
+                    }
+                    Status.ERROR -> {
+                        Timber.i("Loading dashboard admin message result: An exception occurred")
+                        errorHandler.dispatch(it.error!!)
+                        updateData(
+                            dashboardItem = DashboardItem.AdminMessages(
+                                adminMessage = it.data,
+                                error = it.error
+                            ),
+                            forceRefresh = forceRefresh
+                        )
+                    }
+                }
+            }
+            .launch("dashboard_admin_messages")
+    }
+
     private fun updateData(dashboardItem: DashboardItem, forceRefresh: Boolean) {
         val isForceRefreshError = forceRefresh && dashboardItem.error != null
         val isFirstRunDataLoadedError =
@@ -579,6 +617,13 @@ class DashboardPresenter @Inject constructor(
 
         sortDashboardItems()
 
+        if (dashboardItem is DashboardItem.AdminMessages && !dashboardItem.isDataLoaded) {
+            dashboardItemsToLoad = dashboardItemsToLoad - DashboardItem.Type.ADMIN_MESSAGE
+            dashboardTileLoadedList = dashboardTileLoadedList - DashboardItem.Tile.ADMIN_MESSAGE
+
+            dashboardItemLoadedList.removeAll { it.type == DashboardItem.Type.ADMIN_MESSAGE }
+        }
+
         if (forceRefresh) {
             updateForceRefreshData(dashboardItem)
         } else {
@@ -610,9 +655,12 @@ class DashboardPresenter @Inject constructor(
     }
 
     private fun updateForceRefreshData(dashboardItem: DashboardItem) {
+        val isNotLoadedAdminMessage =
+            dashboardItem is DashboardItem.AdminMessages && !dashboardItem.isDataLoaded
+
         with(dashboardItemRefreshLoadedList) {
             removeAll { it.type == dashboardItem.type }
-            add(dashboardItem)
+            if (!isNotLoadedAdminMessage) add(dashboardItem)
         }
 
         val isRefreshItemLoaded =
@@ -644,7 +692,9 @@ class DashboardPresenter @Inject constructor(
         itemsLoadedList: List<DashboardItem>,
         forceRefresh: Boolean
     ) {
-        val filteredItems = itemsLoadedList.filterNot { it.type == DashboardItem.Type.ACCOUNT }
+        val filteredItems = itemsLoadedList.filterNot {
+            it.type == DashboardItem.Type.ACCOUNT || it.type == DashboardItem.Type.ADMIN_MESSAGE
+        }
         val isAccountItemError =
             itemsLoadedList.find { it.type == DashboardItem.Type.ACCOUNT }?.error != null
         val isGeneralError =
@@ -676,10 +726,13 @@ class DashboardPresenter @Inject constructor(
         val dashboardItemsPosition = preferencesRepository.dashboardItemsPosition
 
         dashboardItemLoadedList.sortBy { tile ->
-            dashboardItemsPosition?.getOrDefault(
-                tile.type,
+            val defaultPosition = if (tile is DashboardItem.AdminMessages) {
+                -1
+            } else {
                 tile.type.ordinal + 100
-            ) ?: tile.type.ordinal
+            }
+
+            dashboardItemsPosition?.getOrDefault(tile.type, defaultPosition) ?: tile.type.ordinal
         }
     }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/dashboard/DashboardView.kt

@@ -25,4 +25,6 @@ interface DashboardView : BaseView {
     fun popViewToRoot()
 
     fun openNotificationsCenterView()
+
+    fun openInternetBrowser(url: String)
 }

app/src/main/java/io/github/wulkanowy/ui/modules/debug/notification/NotificationDebugPresenter.kt

@@ -3,6 +3,8 @@ package io.github.wulkanowy.ui.modules.debug.notification
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.repositories.StudentRepository
+import io.github.wulkanowy.services.sync.notifications.ChangeTimetableNotification
+import io.github.wulkanowy.services.sync.notifications.NewAttendanceNotification
 import io.github.wulkanowy.services.sync.notifications.NewConferenceNotification
 import io.github.wulkanowy.services.sync.notifications.NewExamNotification
 import io.github.wulkanowy.services.sync.notifications.NewGradeNotification
@@ -13,6 +15,7 @@ import io.github.wulkanowy.services.sync.notifications.NewNoteNotification
 import io.github.wulkanowy.services.sync.notifications.NewSchoolAnnouncementNotification
 import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
+import io.github.wulkanowy.ui.modules.debug.notification.mock.debugAttendanceItems
 import io.github.wulkanowy.ui.modules.debug.notification.mock.debugConferenceItems
 import io.github.wulkanowy.ui.modules.debug.notification.mock.debugExamItems
 import io.github.wulkanowy.ui.modules.debug.notification.mock.debugGradeDetailsItems
@@ -22,6 +25,7 @@ import io.github.wulkanowy.ui.modules.debug.notification.mock.debugLuckyNumber
 import io.github.wulkanowy.ui.modules.debug.notification.mock.debugMessageItems
 import io.github.wulkanowy.ui.modules.debug.notification.mock.debugNoteItems
 import io.github.wulkanowy.ui.modules.debug.notification.mock.debugSchoolAnnouncementItems
+import io.github.wulkanowy.ui.modules.debug.notification.mock.debugTimetableItems
 import kotlinx.coroutines.launch
 import timber.log.Timber
 import javax.inject.Inject
@@ -37,6 +41,8 @@ class NotificationDebugPresenter @Inject constructor(
     private val newNoteNotification: NewNoteNotification,
     private val newSchoolAnnouncementNotification: NewSchoolAnnouncementNotification,
     private val newLuckyNumberNotification: NewLuckyNumberNotification,
+    private val changeTimetableNotification: ChangeTimetableNotification,
+    private val newAttendanceNotification: NewAttendanceNotification,
 ) : BasePresenter<NotificationDebugView>(errorHandler, studentRepository) {
 
     private val items = listOf(
@@ -64,6 +70,12 @@ class NotificationDebugPresenter @Inject constructor(
         NotificationDebugItem(R.string.note_title) { n ->
             withStudent { newNoteNotification.notify(debugNoteItems.take(n), it) }
         },
+        NotificationDebugItem(R.string.attendance_title) { n ->
+            withStudent { newAttendanceNotification.notify(debugAttendanceItems.take(n), it) }
+        },
+        NotificationDebugItem(R.string.timetable_title) { n ->
+            withStudent { changeTimetableNotification.notify(debugTimetableItems.take(n), it) }
+        },
         NotificationDebugItem(R.string.school_announcement_title) { n ->
             withStudent {
                 newSchoolAnnouncementNotification.notify(debugSchoolAnnouncementItems.take(n), it)
@@ -88,7 +100,7 @@ class NotificationDebugPresenter @Inject constructor(
     }
 
     private fun withStudent(block: suspend (Student) -> Unit) {
-        launch {
+        presenterScope.launch {
             block(studentRepository.getCurrentStudent(false))
         }
     }

app/src/main/java/io/github/wulkanowy/ui/modules/debug/notification/mock/attendance.kt

@@ -0,0 +1,35 @@
+package io.github.wulkanowy.ui.modules.debug.notification.mock
+
+import io.github.wulkanowy.data.db.entities.Attendance
+import java.time.LocalDate
+
+val debugAttendanceItems = listOf(
+    generateAttendance("Matematyka", "PRESENCE"),
+    generateAttendance("Język angielski", "UNEXCUSED_LATENESS"),
+    generateAttendance("Geografia", "ABSENCE_UNEXCUSED"),
+    generateAttendance("Sieci komputerowe", "ABSENCE_EXCUSED"),
+    generateAttendance("Systemy operacyjne", "EXCUSED_LATENESS"),
+    generateAttendance("Język niemiecki", "ABSENCE_UNEXCUSED"),
+    generateAttendance("Biologia", "ABSENCE_UNEXCUSED"),
+    generateAttendance("Chemia", "ABSENCE_EXCUSED"),
+    generateAttendance("Fizyka", "ABSENCE_UNEXCUSED"),
+    generateAttendance("Matematyka", "ABSENCE_EXCUSED"),
+)
+
+private fun generateAttendance(subject: String, name: String) = Attendance(
+    subject = subject,
+    studentId = 0,
+    diaryId = 0,
+    date = LocalDate.now(),
+    timeId = 0,
+    number = 1,
+    name = name,
+    presence = false,
+    absence = false,
+    exemption = false,
+    lateness = false,
+    excused = false,
+    deleted = false,
+    excusable = false,
+    excuseStatus = ""
+)

app/src/main/java/io/github/wulkanowy/ui/modules/debug/notification/mock/timetable.kt

@@ -0,0 +1,39 @@
+package io.github.wulkanowy.ui.modules.debug.notification.mock
+
+import io.github.wulkanowy.data.db.entities.Timetable
+import java.time.LocalDate
+import java.time.LocalDateTime
+import kotlin.random.Random
+
+val debugTimetableItems = listOf(
+    generateTimetable("Matematyka", "12", "01"),
+    generateTimetable("Język angielski", "23", "12"),
+    generateTimetable("Geografia", "34", "23"),
+    generateTimetable("Sieci komputerowe", "45", "34"),
+    generateTimetable("Systemy operacyjne", "56", "45"),
+    generateTimetable("Język niemiecki", "67", "56"),
+    generateTimetable("Biologia", "78", "67"),
+    generateTimetable("Chemia", "89", "78"),
+    generateTimetable("Fizyka", "90", "89"),
+    generateTimetable("Matematyka", "01", "90"),
+)
+
+private fun generateTimetable(subject: String, room: String, roomOld: String) = Timetable(
+    subject = subject,
+    studentId = 0,
+    diaryId = 0,
+    date = LocalDate.now().minusDays(Random.nextLong(0, 8)),
+    number = 1,
+    start = LocalDateTime.now().plusHours(1),
+    end = LocalDateTime.now(),
+    subjectOld = "",
+    group = "",
+    room = room,
+    roomOld = roomOld,
+    teacher = "Wtorkowska Renata",
+    teacherOld = "",
+    info = "",
+    isStudentPlan = true,
+    changes = true,
+    canceled = true
+)

app/src/main/java/io/github/wulkanowy/ui/modules/exam/ExamFragment.kt

@@ -64,7 +64,7 @@ class ExamFragment : BaseFragment<FragmentExamBinding>(R.layout.fragment_exam),
             examPreviousButton.setOnClickListener { presenter.onPreviousWeek() }
             examNextButton.setOnClickListener { presenter.onNextWeek() }
 
-            examNavContainer.setElevationCompat(requireContext().dpToPx(8f))
+            examNavContainer.elevation = requireContext().dpToPx(8f)
         }
     }
 

app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeExpandMode.kt

@@ -0,0 +1,9 @@
+package io.github.wulkanowy.ui.modules.grade
+
+enum class GradeExpandMode(val value: String) {
+    ONE("one"), UNLIMITED("any"), ALWAYS_EXPANDED("always");
+
+    companion object {
+        fun getByValue(value: String) = values().firstOrNull { it.value == value } ?: ONE
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradeFragment.kt

@@ -8,6 +8,7 @@ import android.view.View
 import android.view.View.INVISIBLE
 import android.view.View.VISIBLE
 import androidx.appcompat.app.AlertDialog
+import com.google.android.material.tabs.TabLayoutMediator
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Semester
@@ -29,7 +30,13 @@ class GradeFragment : BaseFragment<FragmentGradeBinding>(R.layout.fragment_grade
     @Inject
     lateinit var presenter: GradePresenter
 
-    private val pagerAdapter by lazy { BaseFragmentPagerAdapter(childFragmentManager) }
+    private val pagerAdapter by lazy {
+        BaseFragmentPagerAdapter(
+            fragmentManager = childFragmentManager,
+            pagesCount = 3,
+            lifecycle = lifecycle,
+        )
+    }
 
     private var semesterSwitchMenu: MenuItem? = null
 
@@ -62,28 +69,35 @@ class GradeFragment : BaseFragment<FragmentGradeBinding>(R.layout.fragment_grade
     }
 
     override fun initView() {
-        with(pagerAdapter) {
-            containerId = binding.gradeViewPager.id
-            addFragmentsWithTitle(
-                mapOf(
-                    GradeDetailsFragment.newInstance() to getString(R.string.all_details),
-                    GradeSummaryFragment.newInstance() to getString(R.string.grade_menu_summary),
-                    GradeStatisticsFragment.newInstance() to getString(R.string.grade_menu_statistics)
-                )
-            )
-        }
-
         with(binding.gradeViewPager) {
             adapter = pagerAdapter
             offscreenPageLimit = 3
             setOnSelectPageListener(presenter::onPageSelected)
         }
 
-        with(binding.gradeTabLayout) {
-            setupWithViewPager(binding.gradeViewPager)
-            setElevationCompat(context.dpToPx(4f))
+        with(pagerAdapter) {
+            containerId = binding.gradeViewPager.id
+            titleFactory = {
+                when (it) {
+                    0 -> getString(R.string.all_details)
+                    1 -> getString(R.string.grade_menu_summary)
+                    2 -> getString(R.string.grade_menu_statistics)
+                    else -> throw IllegalStateException()
+                }
+            }
+            itemFactory = {
+                when (it) {
+                    0 -> GradeDetailsFragment.newInstance()
+                    1 -> GradeSummaryFragment.newInstance()
+                    2 -> GradeStatisticsFragment.newInstance()
+                    else -> throw IllegalStateException()
+                }
+            }
+            TabLayoutMediator(binding.gradeTabLayout, binding.gradeViewPager, this).attach()
         }
 
+        binding.gradeTabLayout.elevation = requireContext().dpToPx(4f)
+
         with(binding) {
             gradeErrorRetry.setOnClickListener { presenter.onRetry() }
             gradeErrorDetails.setOnClickListener { presenter.onDetailsClick() }

app/src/main/java/io/github/wulkanowy/ui/modules/grade/GradePresenter.kt

@@ -101,7 +101,6 @@ class GradePresenter @Inject constructor(
     private fun loadData() {
         flowWithResource {
             val student = studentRepository.getCurrentStudent()
-            delay(200)
             semesterRepository.getSemesters(student, refreshOnNoCurrent = true)
         }.onEach {
             when (it.status) {

app/src/main/java/io/github/wulkanowy/ui/modules/grade/details/GradeDetailsAdapter.kt

@@ -5,6 +5,7 @@ import android.content.res.Resources
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
 import androidx.recyclerview.widget.RecyclerView.NO_POSITION
@@ -13,9 +14,11 @@ import io.github.wulkanowy.data.db.entities.Grade
 import io.github.wulkanowy.databinding.HeaderGradeDetailsBinding
 import io.github.wulkanowy.databinding.ItemGradeDetailsBinding
 import io.github.wulkanowy.ui.base.BaseExpandableAdapter
+import io.github.wulkanowy.ui.modules.grade.GradeExpandMode
 import io.github.wulkanowy.utils.getBackgroundColor
 import io.github.wulkanowy.utils.toFormattedString
 import timber.log.Timber
+import java.util.BitSet
 import javax.inject.Inject
 
 class GradeDetailsAdapter @Inject constructor() : BaseExpandableAdapter<RecyclerView.ViewHolder>() {
@@ -24,19 +27,20 @@ class GradeDetailsAdapter @Inject constructor() : BaseExpandableAdapter<Recycler
 
     private var items = mutableListOf<GradeDetailsItem>()
 
-    private var expandedPosition = NO_POSITION
+    private val expandedPositions = BitSet(items.size)
 
-    private var isExpandable = false
+    private var expandMode = GradeExpandMode.ONE
 
     var onClickListener: (Grade, position: Int) -> Unit = { _, _ -> }
 
     var colorTheme = ""
 
-    fun setDataItems(data: List<GradeDetailsItem>, isExpanded: Boolean = isExpandable) {
+    fun setDataItems(data: List<GradeDetailsItem>, expandMode: GradeExpandMode = this.expandMode) {
         headers = data.filter { it.viewType == ViewType.HEADER }.toMutableList()
-        items = if (isExpanded) headers else data.toMutableList()
-        isExpandable = isExpanded
-        expandedPosition = NO_POSITION
+        items =
+            (if (expandMode != GradeExpandMode.ALWAYS_EXPANDED) headers else data).toMutableList()
+        this.expandMode = expandMode
+        expandedPositions.clear()
     }
 
     fun updateDetailsItem(position: Int, grade: Grade) {
@@ -48,7 +52,7 @@ class GradeDetailsAdapter @Inject constructor() : BaseExpandableAdapter<Recycler
         val candidates = headers.filter { (it.value as GradeDetailsHeader).subject == subject }
 
         if (candidates.size > 1) {
-            Timber.e("Header with subject $subject found ${candidates.size} times! Expanded: $expandedPosition. Items: $candidates")
+            Timber.e("Header with subject $subject found ${candidates.size} times! Expanded: $expandedPositions. Items: $candidates")
         }
 
         return candidates.first()
@@ -64,9 +68,9 @@ class GradeDetailsAdapter @Inject constructor() : BaseExpandableAdapter<Recycler
     }
 
     fun collapseAll() {
-        if (expandedPosition != -1) {
-            refreshList(headers)
-            expandedPosition = NO_POSITION
+        if (!expandedPositions.isEmpty) {
+            refreshList(headers.toMutableList())
+            expandedPositions.clear()
         }
     }
 
@@ -86,8 +90,12 @@ class GradeDetailsAdapter @Inject constructor() : BaseExpandableAdapter<Recycler
         val inflater = LayoutInflater.from(parent.context)
 
         return when (viewType) {
-            ViewType.HEADER.id -> HeaderViewHolder(HeaderGradeDetailsBinding.inflate(inflater, parent, false))
-            ViewType.ITEM.id -> ItemViewHolder(ItemGradeDetailsBinding.inflate(inflater, parent, false))
+            ViewType.HEADER.id -> HeaderViewHolder(
+                HeaderGradeDetailsBinding.inflate(inflater, parent, false)
+            )
+            ViewType.ITEM.id -> ItemViewHolder(
+                ItemGradeDetailsBinding.inflate(inflater, parent, false)
+            )
             else -> throw IllegalStateException()
         }
     }
@@ -106,46 +114,91 @@ class GradeDetailsAdapter @Inject constructor() : BaseExpandableAdapter<Recycler
         }
     }
 
-    private fun bindHeaderViewHolder(holder: HeaderViewHolder, header: GradeDetailsHeader, position: Int) {
-        val headerPosition = headers.indexOf(items[position])
-        val adapterPosition = holder.bindingAdapterPosition
+    private fun bindHeaderViewHolder(
+        holder: HeaderViewHolder,
+        header: GradeDetailsHeader,
+        position: Int
+    ) {
+        val context = holder.binding.root.context
+        val item = items[position]
+        val headerPosition = headers.indexOf(item)
 
         with(holder.binding) {
-            gradeHeaderDivider.visibility = if (adapterPosition == 0) View.GONE else View.VISIBLE
+            gradeHeaderDivider.isVisible = holder.bindingAdapterPosition != 0
             with(gradeHeaderSubject) {
                 text = header.subject
-                maxLines = if (headerPosition == expandedPosition) 2 else 1
+                maxLines = if (expandedPositions[headerPosition]) 2 else 1
             }
             gradeHeaderAverage.text = formatAverage(header.average, root.context.resources)
-            gradeHeaderPointsSum.text = root.context.getString(R.string.grade_points_sum, header.pointsSum)
-            gradeHeaderPointsSum.visibility = if (!header.pointsSum.isNullOrEmpty()) View.VISIBLE else View.GONE
-            gradeHeaderNumber.text = root.context.resources.getQuantityString(R.plurals.grade_number_item, header.grades.size, header.grades.size)
-            gradeHeaderNote.visibility = if (header.newGrades > 0) View.VISIBLE else View.GONE
-            if (header.newGrades > 0) gradeHeaderNote.text = header.newGrades.toString(10)
+            gradeHeaderPointsSum.text =
+                context.getString(R.string.grade_points_sum, header.pointsSum)
+            gradeHeaderPointsSum.isVisible = !header.pointsSum.isNullOrEmpty()
+            gradeHeaderNumber.text = context.resources.getQuantityString(
+                R.plurals.grade_number_item,
+                header.grades.size,
+                header.grades.size
+            )
+            gradeHeaderNote.isVisible = header.newGrades > 0
 
-            gradeHeaderContainer.isEnabled = isExpandable
+            if (header.newGrades > 0) {
+                gradeHeaderNote.text = header.newGrades.toString()
+            }
+
+            gradeHeaderContainer.isEnabled = expandMode != GradeExpandMode.ALWAYS_EXPANDED
             gradeHeaderContainer.setOnClickListener {
-                expandedPosition = if (expandedPosition == adapterPosition) -1 else adapterPosition
-
-                if (expandedPosition != NO_POSITION) {
-                    refreshList(headers.toMutableList().apply {
-                        addAll(headerPosition + 1, header.grades)
-                    })
-                    scrollToHeaderWithSubItems(headerPosition, header.grades.size)
-                } else {
-                    refreshList(headers)
-                }
+                expandGradeHeader(headerPosition, header, holder)
             }
         }
     }
 
-    private fun formatAverage(average: Double?, resources: Resources): String {
-        return if (average == null || average == .0) resources.getString(R.string.grade_no_average)
-        else resources.getString(R.string.grade_average, average)
+    private fun expandGradeHeader(
+        headerPosition: Int,
+        header: GradeDetailsHeader,
+        holder: HeaderViewHolder
+    ) {
+        if (expandMode == GradeExpandMode.ONE) {
+            val isHeaderExpanded = expandedPositions[headerPosition]
+
+            expandedPositions.clear()
+
+            if (!isHeaderExpanded) {
+                val updatedItemList = headers.toMutableList()
+                    .apply { addAll(headerPosition + 1, header.grades) }
+
+                expandedPositions.set(headerPosition)
+                refreshList(updatedItemList)
+                scrollToHeaderWithSubItems(headerPosition, header.grades.size)
+            } else {
+                refreshList(headers.toMutableList())
+            }
+        } else if (expandMode == GradeExpandMode.UNLIMITED) {
+            val headerAdapterPosition = holder.bindingAdapterPosition
+            val isHeaderExpanded = expandedPositions[headerPosition]
+
+            expandedPositions.flip(headerPosition)
+
+            if (!isHeaderExpanded) {
+                val updatedList = items.toMutableList()
+                    .apply { addAll(headerAdapterPosition + 1, header.grades) }
+
+                refreshList(updatedList)
+                scrollToHeaderWithSubItems(headerAdapterPosition, header.grades.size)
+            } else {
+                val startPosition = headerAdapterPosition + 1
+                val updatedList = items.toMutableList()
+                    .apply {
+                        subList(startPosition, startPosition + header.grades.size).clear()
+                    }
+
+                refreshList(updatedList)
+            }
+        }
     }
 
     @SuppressLint("SetTextI18n")
     private fun bindItemViewHolder(holder: ItemViewHolder, grade: Grade) {
+        val context = holder.binding.root.context
+
         with(holder.binding) {
             gradeItemValue.run {
                 text = grade.entry
@@ -154,26 +207,37 @@ class GradeDetailsAdapter @Inject constructor() : BaseExpandableAdapter<Recycler
             gradeItemDescription.text = when {
                 grade.description.isNotBlank() -> grade.description
                 grade.gradeSymbol.isNotBlank() -> grade.gradeSymbol
-                else -> root.context.getString(R.string.all_no_description)
+                else -> context.getString(R.string.all_no_description)
             }
             gradeItemDate.text = grade.date.toFormattedString()
-            gradeItemWeight.text = "${root.context.getString(R.string.grade_weight)}: ${grade.weight}"
+            gradeItemWeight.text = "${context.getString(R.string.grade_weight)}: ${grade.weight}"
             gradeItemNote.visibility = if (!grade.isRead) View.VISIBLE else View.GONE
 
             root.setOnClickListener {
-                holder.bindingAdapterPosition.let { if (it != NO_POSITION) onClickListener(grade, it) }
+                holder.bindingAdapterPosition.let {
+                    if (it != NO_POSITION) onClickListener(grade, it)
+                }
             }
         }
     }
 
+    private fun formatAverage(average: Double?, resources: Resources) =
+        if (average == null || average == .0) {
+            resources.getString(R.string.grade_no_average)
+        } else {
+            resources.getString(R.string.grade_average, average)
+        }
+
     private class HeaderViewHolder(val binding: HeaderGradeDetailsBinding) :
         RecyclerView.ViewHolder(binding.root)
 
     private class ItemViewHolder(val binding: ItemGradeDetailsBinding) :
         RecyclerView.ViewHolder(binding.root)
 
-    class GradeDetailsDiffUtil(private val old: List<GradeDetailsItem>, private val new: List<GradeDetailsItem>) :
-        DiffUtil.Callback() {
+    private class GradeDetailsDiffUtil(
+        private val old: List<GradeDetailsItem>,
+        private val new: List<GradeDetailsItem>
+    ) : DiffUtil.Callback() {
 
         override fun getOldListSize() = old.size
 

app/src/main/java/io/github/wulkanowy/ui/modules/grade/details/GradeDetailsFragment.kt

@@ -12,6 +12,7 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Grade
+import io.github.wulkanowy.ui.modules.grade.GradeExpandMode
 import io.github.wulkanowy.databinding.FragmentGradeDetailsBinding
 import io.github.wulkanowy.ui.base.BaseFragment
 import io.github.wulkanowy.ui.modules.grade.GradeFragment
@@ -79,10 +80,10 @@ class GradeDetailsFragment :
         else false
     }
 
-    override fun updateData(data: List<GradeDetailsItem>, isGradeExpandable: Boolean, gradeColorTheme: String) {
+    override fun updateData(data: List<GradeDetailsItem>, expandMode: GradeExpandMode, gradeColorTheme: String) {
         with(gradeDetailsAdapter) {
             colorTheme = gradeColorTheme
-            setDataItems(data, isGradeExpandable)
+            setDataItems(data, expandMode)
             notifyDataSetChanged()
         }
     }

app/src/main/java/io/github/wulkanowy/ui/modules/grade/details/GradeDetailsPresenter.kt

@@ -9,6 +9,7 @@ import io.github.wulkanowy.data.repositories.StudentRepository
 import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
 import io.github.wulkanowy.ui.modules.grade.GradeAverageProvider
+import io.github.wulkanowy.ui.modules.grade.GradeExpandMode
 import io.github.wulkanowy.ui.modules.grade.GradeSortingMode.ALPHABETIC
 import io.github.wulkanowy.ui.modules.grade.GradeSortingMode.DATE
 import io.github.wulkanowy.ui.modules.grade.GradeSubject
@@ -16,6 +17,7 @@ import io.github.wulkanowy.utils.AnalyticsHelper
 import io.github.wulkanowy.utils.afterLoading
 import io.github.wulkanowy.utils.flowWithResource
 import io.github.wulkanowy.utils.flowWithResourceIn
+import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.onEach
 import timber.log.Timber
@@ -46,8 +48,8 @@ class GradeDetailsPresenter @Inject constructor(
     fun onParentViewLoadData(semesterId: Int, forceRefresh: Boolean) {
         currentSemesterId = semesterId
 
-        loadData(semesterId, forceRefresh)
         if (!forceRefresh) view?.showErrorView(false)
+        loadData(semesterId, forceRefresh)
     }
 
     fun onGradeItemSelected(grade: Grade, position: Int) {
@@ -113,7 +115,7 @@ class GradeDetailsPresenter @Inject constructor(
     fun onParentViewReselected() {
         view?.run {
             if (!isViewEmpty) {
-                if (preferencesRepository.isGradeExpandable) collapseAllItems()
+                if (preferencesRepository.gradeExpandMode != GradeExpandMode.ALWAYS_EXPANDED) collapseAllItems()
                 scrollToStart()
             }
         }
@@ -157,7 +159,7 @@ class GradeDetailsPresenter @Inject constructor(
                             showContent(true)
                             updateData(
                                 data = items,
-                                isGradeExpandable = preferencesRepository.isGradeExpandable,
+                                expandMode = preferencesRepository.gradeExpandMode,
                                 gradeColorTheme = preferencesRepository.gradeColorTheme
                             )
                             notifyParentDataLoaded(semesterId)
@@ -175,7 +177,7 @@ class GradeDetailsPresenter @Inject constructor(
                         showContent(items.isNotEmpty())
                         updateData(
                             data = items,
-                            isGradeExpandable = preferencesRepository.isGradeExpandable,
+                            expandMode = preferencesRepository.gradeExpandMode,
                             gradeColorTheme = preferencesRepository.gradeColorTheme
                         )
                     }
@@ -197,6 +199,9 @@ class GradeDetailsPresenter @Inject constructor(
                 enableSwipe(true)
                 notifyParentDataLoaded(semesterId)
             }
+        }.catch {
+            errorHandler.dispatch(it)
+            view?.notifyParentDataLoaded(semesterId)
         }.launch()
     }
 
@@ -213,6 +218,7 @@ class GradeDetailsPresenter @Inject constructor(
                 setErrorDetails(message)
                 showErrorView(true)
                 showEmpty(false)
+                showProgress(false)
             } else showError(message, error)
         }
     }
@@ -235,14 +241,24 @@ class GradeDetailsPresenter @Inject constructor(
                     .sortedByDescending { it.date }
                     .map { GradeDetailsItem(it, ViewType.ITEM) }
 
-                listOf(GradeDetailsItem(GradeDetailsHeader(
-                    subject = subject,
-                    average = average,
-                    pointsSum = points,
-                    grades = subItems
-                ).apply {
-                    newGrades = grades.filter { grade -> !grade.isRead }.size
-                }, ViewType.HEADER)) + if (preferencesRepository.isGradeExpandable) emptyList() else subItems
+                val gradeDetailsItems = listOf(
+                    GradeDetailsItem(
+                        GradeDetailsHeader(
+                            subject = subject,
+                            average = average,
+                            pointsSum = points,
+                            grades = subItems
+                        ).apply {
+                            newGrades = grades.filter { grade -> !grade.isRead }.size
+                        }, ViewType.HEADER
+                    )
+                )
+
+                if (preferencesRepository.gradeExpandMode == GradeExpandMode.ALWAYS_EXPANDED) {
+                    gradeDetailsItems + subItems
+                } else {
+                    gradeDetailsItems
+                }
             }.flatten()
     }
 

app/src/main/java/io/github/wulkanowy/ui/modules/grade/details/GradeDetailsView.kt

@@ -1,6 +1,7 @@
 package io.github.wulkanowy.ui.modules.grade.details
 
 import io.github.wulkanowy.data.db.entities.Grade
+import io.github.wulkanowy.ui.modules.grade.GradeExpandMode
 import io.github.wulkanowy.ui.base.BaseView
 
 interface GradeDetailsView : BaseView {
@@ -9,7 +10,7 @@ interface GradeDetailsView : BaseView {
 
     fun initView()
 
-    fun updateData(data: List<GradeDetailsItem>, isGradeExpandable: Boolean, gradeColorTheme: String)
+    fun updateData(data: List<GradeDetailsItem>, expandMode: GradeExpandMode, gradeColorTheme: String)
 
     fun updateItem(item: Grade, position: Int)
 

app/src/main/java/io/github/wulkanowy/ui/modules/grade/statistics/GradeStatisticsFragment.kt

@@ -68,7 +68,7 @@ class GradeStatisticsFragment :
         }
 
         with(binding) {
-            gradeStatisticsSubjectsContainer.setElevationCompat(requireContext().dpToPx(1f))
+            gradeStatisticsSubjectsContainer.elevation = requireContext().dpToPx(1f)
 
             gradeStatisticsSwipe.setOnRefreshListener(presenter::onSwipeRefresh)
             gradeStatisticsSwipe.setColorSchemeColors(requireContext().getThemeAttrColor(R.attr.colorPrimary))

app/src/main/java/io/github/wulkanowy/ui/modules/homework/HomeworkFragment.kt

@@ -10,6 +10,7 @@ import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Homework
 import io.github.wulkanowy.databinding.FragmentHomeworkBinding
 import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.homework.add.HomeworkAddDialog
 import io.github.wulkanowy.ui.modules.homework.details.HomeworkDetailsDialog
 import io.github.wulkanowy.ui.modules.main.MainActivity
 import io.github.wulkanowy.ui.modules.main.MainView
@@ -64,7 +65,9 @@ class HomeworkFragment : BaseFragment<FragmentHomeworkBinding>(R.layout.fragment
             homeworkPreviousButton.setOnClickListener { presenter.onPreviousDay() }
             homeworkNextButton.setOnClickListener { presenter.onNextDay() }
 
-            homeworkNavContainer.setElevationCompat(requireContext().dpToPx(8f))
+            openAddHomeworkButton.setOnClickListener { presenter.onHomeworkAddButtonClicked() }
+
+            homeworkNavContainer.elevation = requireContext().dpToPx(8f)
         }
     }
 
@@ -122,10 +125,14 @@ class HomeworkFragment : BaseFragment<FragmentHomeworkBinding>(R.layout.fragment
         binding.homeworkNextButton.visibility = if (show) VISIBLE else View.INVISIBLE
     }
 
-    override fun showTimetableDialog(homework: Homework) {
+    override fun showHomeworkDialog(homework: Homework) {
         (activity as? MainActivity)?.showDialogFragment(HomeworkDetailsDialog.newInstance(homework))
     }
 
+    override fun showAddHomeworkDialog() {
+        (activity as? MainActivity)?.showDialogFragment(HomeworkAddDialog())
+    }
+
     override fun onSaveInstanceState(outState: Bundle) {
         super.onSaveInstanceState(outState)
         outState.putLong(SAVED_DATE_KEY, presenter.currentDate.toEpochDay())

app/src/main/java/io/github/wulkanowy/ui/modules/homework/HomeworkPresenter.kt

@@ -78,7 +78,11 @@ class HomeworkPresenter @Inject constructor(
 
     fun onHomeworkItemSelected(homework: Homework) {
         Timber.i("Select homework item ${homework.id}")
-        view?.showTimetableDialog(homework)
+        view?.showHomeworkDialog(homework)
+    }
+
+    fun onHomeworkAddButtonClicked() {
+        view?.showAddHomeworkDialog()
     }
 
     private fun setBaseDateOnHolidays() {

app/src/main/java/io/github/wulkanowy/ui/modules/homework/HomeworkView.kt

@@ -33,5 +33,7 @@ interface HomeworkView : BaseView {
 
     fun showNextButton(show: Boolean)
 
-    fun showTimetableDialog(homework: Homework)
+    fun showHomeworkDialog(homework: Homework)
+
+    fun showAddHomeworkDialog()
 }

app/src/main/java/io/github/wulkanowy/ui/modules/homework/add/HomeworkAddDialog.kt

@@ -0,0 +1,124 @@
+package io.github.wulkanowy.ui.modules.homework.add
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.widget.doOnTextChanged
+import com.google.android.material.datepicker.CalendarConstraints
+import com.google.android.material.datepicker.MaterialDatePicker
+import dagger.hilt.android.AndroidEntryPoint
+import io.github.wulkanowy.R
+import io.github.wulkanowy.databinding.DialogHomeworkAddBinding
+import io.github.wulkanowy.ui.base.BaseDialogFragment
+import io.github.wulkanowy.utils.toFormattedString
+import io.github.wulkanowy.utils.toLocalDateTime
+import io.github.wulkanowy.utils.toTimestamp
+import java.time.LocalDate
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class HomeworkAddDialog : BaseDialogFragment<DialogHomeworkAddBinding>(), HomeworkAddView {
+
+    @Inject
+    lateinit var presenter: HomeworkAddPresenter
+
+    private var date: LocalDate? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setStyle(STYLE_NO_TITLE, 0)
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ) = DialogHomeworkAddBinding.inflate(inflater).apply { binding = this }.root
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        presenter.onAttachView(this)
+    }
+
+    override fun initView() {
+        with(binding) {
+            homeworkDialogSubjectEdit.doOnTextChanged { _, _, _, _ ->
+                homeworkDialogSubject.error = null
+                homeworkDialogSubject.isErrorEnabled = false
+            }
+            homeworkDialogDateEdit.doOnTextChanged { _, _, _, _ ->
+                homeworkDialogDate.error = null
+                homeworkDialogDate.isErrorEnabled = false
+            }
+            homeworkDialogContentEdit.doOnTextChanged { _, _, _, _ ->
+                homeworkDialogContent.error = null
+                homeworkDialogContent.isErrorEnabled = false
+            }
+            homeworkDialogClose.setOnClickListener { dismiss() }
+            homeworkDialogDateEdit.setOnClickListener { presenter.showDatePicker(date) }
+            homeworkDialogAdd.setOnClickListener {
+                presenter.onAddHomeworkClicked(
+                    subject = homeworkDialogSubjectEdit.text?.toString(),
+                    teacher = homeworkDialogTeacherEdit.text?.toString(),
+                    date = homeworkDialogDateEdit.text?.toString(),
+                    content = homeworkDialogContentEdit.text?.toString()
+                )
+            }
+        }
+    }
+
+    override fun showSuccessMessage() {
+        showMessage(getString(R.string.homework_add_success))
+    }
+
+    override fun setErrorSubjectRequired() {
+        with(binding.homeworkDialogSubject) {
+            isErrorEnabled = true
+            error = getString(R.string.error_field_required)
+        }
+    }
+
+    override fun setErrorDateRequired() {
+        with(binding.homeworkDialogDate) {
+            isErrorEnabled = true
+            error = getString(R.string.error_field_required)
+        }
+    }
+
+    override fun setErrorContentRequired() {
+        with(binding.homeworkDialogContent) {
+            isErrorEnabled = true
+            error = getString(R.string.error_field_required)
+        }
+    }
+
+    override fun closeDialog() {
+        dismiss()
+    }
+
+    override fun showDatePickerDialog(currentDate: LocalDate) {
+        val constraintsBuilder = CalendarConstraints.Builder().apply {
+            setStart(LocalDate.now().toEpochDay())
+        }
+        val datePicker =
+            MaterialDatePicker.Builder.datePicker()
+                .setCalendarConstraints(constraintsBuilder.build())
+                .setSelection(currentDate.toTimestamp())
+                .build()
+
+        datePicker.addOnPositiveButtonClickListener {
+            date = it.toLocalDateTime().toLocalDate()
+            binding.homeworkDialogDate.editText?.setText(date!!.toFormattedString())
+        }
+
+        if (!parentFragmentManager.isStateSaved) {
+            datePicker.show(this.parentFragmentManager, null)
+        }
+    }
+
+    override fun onDestroyView() {
+        presenter.onDetachView()
+        super.onDestroyView()
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/homework/add/HomeworkAddPresenter.kt

@@ -0,0 +1,92 @@
+package io.github.wulkanowy.ui.modules.homework.add
+
+import io.github.wulkanowy.data.Status
+import io.github.wulkanowy.data.db.entities.Homework
+import io.github.wulkanowy.data.repositories.HomeworkRepository
+import io.github.wulkanowy.data.repositories.SemesterRepository
+import io.github.wulkanowy.data.repositories.StudentRepository
+import io.github.wulkanowy.ui.base.BasePresenter
+import io.github.wulkanowy.ui.base.ErrorHandler
+import io.github.wulkanowy.utils.flowWithResource
+import io.github.wulkanowy.utils.toLocalDate
+import kotlinx.coroutines.flow.onEach
+import timber.log.Timber
+import java.time.LocalDate
+import javax.inject.Inject
+
+class HomeworkAddPresenter @Inject constructor(
+    errorHandler: ErrorHandler,
+    studentRepository: StudentRepository,
+    private val homeworkRepository: HomeworkRepository,
+    private val semesterRepository: SemesterRepository
+) : BasePresenter<HomeworkAddView>(errorHandler, studentRepository) {
+
+    override fun onAttachView(view: HomeworkAddView) {
+        super.onAttachView(view)
+        view.initView()
+        Timber.i("Homework details view was initialized")
+    }
+
+    fun showDatePicker(date: LocalDate?) {
+        view?.showDatePickerDialog(date ?: LocalDate.now())
+    }
+
+    fun onAddHomeworkClicked(subject: String?, teacher: String?, date: String?, content: String?) {
+        var isError = false
+
+        if (subject.isNullOrBlank()) {
+            view?.setErrorSubjectRequired()
+            isError = true
+        }
+
+        if (date.isNullOrBlank()) {
+            view?.setErrorDateRequired()
+            isError = true
+        }
+
+        if (content.isNullOrBlank()) {
+            view?.setErrorContentRequired()
+            isError = true
+        }
+
+        if (!isError) {
+            saveHomework(subject!!, teacher.orEmpty(), date!!.toLocalDate(), content!!)
+        }
+    }
+
+    private fun saveHomework(subject: String, teacher: String, date: LocalDate, content: String) {
+        flowWithResource {
+            val student = studentRepository.getCurrentStudent()
+            val semester = semesterRepository.getCurrentSemester(student)
+            val entryDate = LocalDate.now()
+            homeworkRepository.saveHomework(
+                Homework(
+                    semesterId = semester.semesterId,
+                    studentId = student.studentId,
+                    date = date,
+                    entryDate = entryDate,
+                    subject = subject,
+                    content = content,
+                    teacher = teacher,
+                    teacherSymbol = "",
+                    attachments = emptyList(),
+                ).apply { isAddedByUser = true }
+            )
+        }.onEach {
+            when (it.status) {
+                Status.LOADING -> Timber.i("Homework insert start")
+                Status.SUCCESS -> {
+                    Timber.i("Homework insert: Success")
+                    view?.run {
+                        showSuccessMessage()
+                        closeDialog()
+                    }
+                }
+                Status.ERROR -> {
+                    Timber.i("Homework insert result: An exception occurred")
+                    errorHandler.dispatch(it.error!!)
+                }
+            }
+        }.launch("add_homework")
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/modules/homework/add/HomeworkAddView.kt

@@ -0,0 +1,21 @@
+package io.github.wulkanowy.ui.modules.homework.add
+
+import io.github.wulkanowy.ui.base.BaseView
+import java.time.LocalDate
+
+interface HomeworkAddView : BaseView {
+
+    fun initView()
+
+    fun showSuccessMessage()
+
+    fun setErrorSubjectRequired()
+
+    fun setErrorDateRequired()
+
+    fun setErrorContentRequired()
+
+    fun closeDialog()
+
+    fun showDatePickerDialog(currentDate: LocalDate)
+}

app/src/main/java/io/github/wulkanowy/ui/modules/homework/details/HomeworkDetailsAdapter.kt

@@ -5,10 +5,12 @@ import android.view.View.GONE
 import android.view.View.VISIBLE
 import android.view.ViewGroup
 import androidx.recyclerview.widget.RecyclerView
+import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Homework
 import io.github.wulkanowy.databinding.ItemHomeworkDialogAttachmentBinding
 import io.github.wulkanowy.databinding.ItemHomeworkDialogAttachmentsHeaderBinding
 import io.github.wulkanowy.databinding.ItemHomeworkDialogDetailsBinding
+import io.github.wulkanowy.utils.ifNullOrBlank
 import io.github.wulkanowy.utils.toFormattedString
 import javax.inject.Inject
 
@@ -37,6 +39,8 @@ class HomeworkDetailsAdapter @Inject constructor() :
 
     var onFullScreenExitClickListener = {}
 
+    var onDeleteClickListener: (homework: Homework) -> Unit = {}
+
     override fun getItemCount() = 1 + if (attachments.isNotEmpty()) attachments.size + 1 else 0
 
     override fun getItemViewType(position: Int) = when (position) {
@@ -49,9 +53,15 @@ class HomeworkDetailsAdapter @Inject constructor() :
         val inflater = LayoutInflater.from(parent.context)
 
         return when (viewType) {
-            ViewType.ATTACHMENTS_HEADER.id -> AttachmentsHeaderViewHolder(ItemHomeworkDialogAttachmentsHeaderBinding.inflate(inflater, parent, false))
-            ViewType.ATTACHMENT.id -> AttachmentViewHolder(ItemHomeworkDialogAttachmentBinding.inflate(inflater, parent, false))
-            else -> DetailsViewHolder(ItemHomeworkDialogDetailsBinding.inflate(inflater, parent, false))
+            ViewType.ATTACHMENTS_HEADER.id -> AttachmentsHeaderViewHolder(
+                ItemHomeworkDialogAttachmentsHeaderBinding.inflate(inflater, parent, false)
+            )
+            ViewType.ATTACHMENT.id -> AttachmentViewHolder(
+                ItemHomeworkDialogAttachmentBinding.inflate(inflater, parent, false)
+            )
+            else -> DetailsViewHolder(
+                ItemHomeworkDialogDetailsBinding.inflate(inflater, parent, false)
+            )
         }
     }
 
@@ -63,12 +73,15 @@ class HomeworkDetailsAdapter @Inject constructor() :
     }
 
     private fun bindDetailsViewHolder(holder: DetailsViewHolder) {
+        val noDataString = holder.binding.root.context.getString(R.string.all_no_data)
+
         with(holder.binding) {
             homeworkDialogDate.text = homework?.date?.toFormattedString()
             homeworkDialogEntryDate.text = homework?.entryDate?.toFormattedString()
-            homeworkDialogSubject.text = homework?.subject
-            homeworkDialogTeacher.text = homework?.teacher
-            homeworkDialogContent.text = homework?.content
+            homeworkDialogSubject.text = homework?.subject.ifNullOrBlank { noDataString }
+            homeworkDialogTeacher.text = homework?.teacher.ifNullOrBlank { noDataString }
+            homeworkDialogContent.text = homework?.content.ifNullOrBlank { noDataString }
+            homeworkDialogDelete.visibility = if (homework?.isAddedByUser == true) VISIBLE else GONE
             homeworkDialogFullScreen.visibility = if (isHomeworkFullscreen) GONE else VISIBLE
             homeworkDialogFullScreenExit.visibility = if (isHomeworkFullscreen) VISIBLE else GONE
             homeworkDialogFullScreen.setOnClickListener {
@@ -81,6 +94,9 @@ class HomeworkDetailsAdapter @Inject constructor() :
                 homeworkDialogFullScreenExit.visibility = GONE
                 onFullScreenExitClickListener()
             }
+            homeworkDialogDelete.setOnClickListener {
+                onDeleteClickListener(homework!!)
+            }
         }
     }
 

app/src/main/java/io/github/wulkanowy/ui/modules/homework/details/HomeworkDetailsDialog.kt

@@ -25,6 +25,9 @@ class HomeworkDetailsDialog : BaseDialogFragment<DialogHomeworkBinding>(), Homew
     @Inject
     lateinit var detailsAdapter: HomeworkDetailsAdapter
 
+    override val homeworkDeleteSuccess: String
+        get() = getString(R.string.homework_delete_success)
+
     private lateinit var homework: Homework
 
     companion object {
@@ -82,12 +85,17 @@ class HomeworkDetailsDialog : BaseDialogFragment<DialogHomeworkBinding>(), Homew
                     dialog?.window?.setLayout(WRAP_CONTENT, WRAP_CONTENT)
                     presenter.isHomeworkFullscreen = false
                 }
+                onDeleteClickListener = { homework -> presenter.deleteHomework(homework) }
                 isHomeworkFullscreen = presenter.isHomeworkFullscreen
                 homework = this@HomeworkDetailsDialog.homework
             }
         }
     }
 
+    override fun closeDialog() {
+        dismiss()
+    }
+
     override fun updateMarkAsDoneLabel(isDone: Boolean) {
         binding.homeworkDialogRead.text =
             view?.context?.getString(if (isDone) R.string.homework_mark_as_undone else R.string.homework_mark_as_done)