Merge branch 'develop' into feature/update-colors

.circleci/config.yml

@@ -162,7 +162,7 @@ jobs:
             openssl aes-256-cbc -d -in ./app/upload-key-encrypted.jks -k $ENCRYPT_KEY >> ./app/upload-key.jks
       - run:
           name: Publish release
-          command: ./gradlew publishPlayRelease --no-daemon --stacktrace --console=plain -PenableCrashlytics -PdisablePreDex
+          command: ./gradlew publishPlayRelease --no-daemon --stacktrace --console=plain -PdisablePreDex
 
 workflows:
   version: 2

.github/FUNDING.yml

@@ -0,0 +1,4 @@
+# These are supported funding model platforms
+
+github: wulkanowy
+custom: https://www.paypal.com/paypalme/wulkanowy

.github/workflows/deploy-store.yml

@@ -40,7 +40,7 @@ jobs:
           SINGLE_SUPPORT_AD_ID: ${{ secrets.SINGLE_SUPPORT_AD_ID }}
           DASHBOARD_TILE_AD_ID: ${{ secrets.DASHBOARD_TILE_AD_ID }}
           SET_BUILD_TIMESTAMP: ${{ secrets.SET_BUILD_TIMESTAMP }}
-        run: ./gradlew publishPlayReleaseApps -PenableFirebase --stacktrace;
+        run: ./gradlew publishPlayReleaseApps --stacktrace;
 
   deploy-app-gallery:
     name: AppGallery

.github/workflows/deploy-test.yml

@@ -36,8 +36,7 @@ jobs:
       - name: Prepare build configuration
         run: |
           sed -i -e "s#applicationIdSuffix \".dev\"#applicationIdSuffix \".${GITHUB_HEAD_REF//[-.\/]/_}\"#" app/build.gradle
-          sed -i -e "s#.dev\"#.${GITHUB_HEAD_REF//[-.\/]/_}\"#" app/src/debug/google-services.json
+          sed -i -e "s#.dev\"#.${GITHUB_HEAD_REF//[-.\/]/_}\"#" app/google-services.json
-          sed -i -e "s#.dev\"#.${GITHUB_HEAD_REF//[-.\/]/_}\"#" app/src/debug/agconnect-services.json
           sed -i -e '/versionNameSuffix/d' app/build.gradle
       - name: Add signing config
         run: |
@@ -131,7 +130,7 @@ jobs:
           BITRISE_KEYSTORE_PASSWORD: ${{ secrets.BITRISE_KEYSTORE_PASSWORD }}
           BITRISE_KEY_ALIAS: ${{ secrets.BITRISE_KEY_ALIAS }}
           BITRISE_KEY_PASSWORD: ${{ secrets.BITRISE_KEY_PASSWORD }}
-        run: ./gradlew assemblePlayDebug -PenableFirebase --stacktrace
+        run: ./gradlew assemblePlayDebug --stacktrace
       - name: Upload apk to github artifacts
         uses: actions/upload-artifact@v3
         with:

.gitignore

@@ -67,6 +67,10 @@ captures/
 .idea/discord.xml
 .idea/migrations.xml
 .idea/androidTestResultsUserPreferences.xml
+.idea/copilot
+.idea/deploymentTargetDropDown.xml
+.idea/deploymentTargetSelector.xml
+.idea/kotlinc.xml
 
 # Keystore files
 *.jks
@@ -113,12 +117,13 @@ Thumbs.db
 *.ear
 
 ### AndroidStudio Patch ###
-
 !/gradle/wrapper/gradle-wrapper.jar
 .idea/jarRepositories.xml
 
+### Services config files
+agconnect-services.json
+agconnect-credentials.json
+google-services.json
+!app/google-services.json
+
 
-app/src/release/agconnect-services.json
-app/src/release/agconnect-credentials.json
-.idea/deploymentTargetDropDown.xml
-.idea/kotlinc.xml

.travis.yml

@@ -61,7 +61,7 @@ script:
       gpg --yes --batch --passphrase=$SERVICES_ENCRYPT_KEY ./app/src/release/agconnect-services.json.gpg;
       gpg --yes --batch --passphrase=$ENCRYPT_KEY ./app/key.p12.gpg;
       gpg --yes --batch --passphrase=$ENCRYPT_KEY ./app/upload-key.jks.gpg;
-      ./gradlew publishPlayRelease -PenableFirebase --stacktrace;
+      ./gradlew publishPlayRelease --stacktrace;
     fi
 
 after_success:

app/build.gradle

@@ -27,15 +27,12 @@ android {
         testApplicationId "io.github.tests.wulkanowy"
         minSdkVersion 21
         targetSdkVersion 34
-        versionCode 147
+        versionCode 150
-        versionName "2.4.1"
+        versionName "2.5.1"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
 
         resValue "string", "app_name", "Wulkanowy"
-        manifestPlaceholders = [
+        manifestPlaceholders = [admob_project_id: ""]
-            firebase_enabled: project.hasProperty("enableFirebase"),
-            admob_project_id: ""
-        ]
 
         buildConfigField "String", "SINGLE_SUPPORT_AD_ID", "null"
         buildConfigField "String", "DASHBOARD_TILE_AD_ID", "null"
@@ -76,7 +73,6 @@ android {
             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\""
             buildConfigField "String", "SCHOOLS_BASE_URL", '"https://schools.wulkanowy.net.pl"'
         }
@@ -187,15 +183,15 @@ huaweiPublish {
 
 ext {
     work_manager = "2.9.0"
-    android_hilt = "1.1.0"
+    android_hilt = "1.2.0"
     room = "2.6.1"
     chucker = "4.0.0"
-    mockk = "1.13.9"
+    mockk = "1.13.10"
     coroutines = "1.8.0"
 }
 
 dependencies {
-    implementation 'io.github.wulkanowy:sdk:2.4.1'
+    implementation 'io.github.wulkanowy:sdk:2.5.1'
 
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.4'
 
@@ -246,23 +242,23 @@ dependencies {
     implementation 'com.github.Faierbel:slf4j-timber:2.0'
     implementation 'com.github.bastienpaulfr:Treessence:1.1.2'
     implementation "com.mikepenz:aboutlibraries-core:$about_libraries"
-    implementation 'io.coil-kt:coil:2.5.0'
+    implementation 'io.coil-kt:coil:2.6.0'
     implementation "io.github.wulkanowy:AppKillerManager:3.0.1"
     implementation 'me.xdrop:fuzzywuzzy:1.4.0'
     implementation 'com.fredporciuncula:flow-preferences:1.9.1'
     implementation 'org.apache.commons:commons-text:1.11.0'
 
-    playImplementation platform('com.google.firebase:firebase-bom:32.7.2')
+    playImplementation platform('com.google.firebase:firebase-bom:32.7.4')
     playImplementation 'com.google.firebase:firebase-analytics'
     playImplementation 'com.google.firebase:firebase-messaging'
     playImplementation 'com.google.firebase:firebase-crashlytics:'
     playImplementation 'com.google.firebase:firebase-config'
 
-    playImplementation 'com.google.android.gms:play-services-ads:22.6.0'
+    playImplementation 'com.google.android.gms:play-services-ads:23.0.0'
     playImplementation "com.google.android.play:integrity:1.3.0"
     playImplementation 'com.google.android.play:app-update-ktx:2.1.0'
     playImplementation 'com.google.android.play:review-ktx:2.0.1'
-    playImplementation "com.google.android.ump:user-messaging-platform:2.2.0"
+    playImplementation "com.google.android.ump:user-messaging-platform:2.1.0"
 
     hmsImplementation 'com.huawei.hms:hianalytics:6.12.0.301'
     hmsImplementation 'com.huawei.agconnect:agconnect-crash:1.9.1.303'

app/play-publish-lint.sh

@@ -1,7 +1,8 @@
 #!/bin/bash -
 
 content=$(cat < "app/src/main/play/release-notes/pl-PL/default.txt") || exit
-if [[ "${#content}" -gt 500 ]]; then
+content2=echo "$content" | dos2unix
+if [[ "${#content2}" -gt 500 ]]; then
     echo >&2 "Release notes content has reached the limit of 500 characters"
     exit 1
 fi

app/src/debug/agconnect-services.json

@@ -1,92 +0,0 @@
-{
-  "agcgw": {
-    "backurl": "connect-dre.hispace.hicloud.com",
-    "url": "connect-dre.dbankcloud.cn",
-    "websocketbackurl": "connect-ws-dre.hispace.dbankcloud.com",
-    "websocketurl": "connect-ws-dre.hispace.dbankcloud.cn"
-  },
-  "agcgw_all": {
-    "CN": "connect-drcn.dbankcloud.cn",
-    "CN_back": "connect-drcn.hispace.hicloud.com",
-    "DE": "connect-dre.dbankcloud.cn",
-    "DE_back": "connect-dre.hispace.hicloud.com",
-    "RU": "connect-drru.hispace.dbankcloud.ru",
-    "RU_back": "connect-drru.hispace.dbankcloud.cn",
-    "SG": "connect-dra.dbankcloud.cn",
-    "SG_back": "connect-dra.hispace.hicloud.com"
-  },
-  "websocketgw_all": {
-    "CN": "connect-ws-drcn.hispace.dbankcloud.cn",
-    "CN_back": "connect-ws-drcn.hispace.dbankcloud.com",
-    "DE": "connect-ws-dre.hispace.dbankcloud.cn",
-    "DE_back": "connect-ws-dre.hispace.dbankcloud.com",
-    "RU": "connect-ws-drru.hispace.dbankcloud.ru",
-    "RU_back": "connect-ws-drru.hispace.dbankcloud.cn",
-    "SG": "connect-ws-dra.hispace.dbankcloud.cn",
-    "SG_back": "connect-ws-dra.hispace.dbankcloud.com"
-  },
-  "client": {
-    "cp_id": "890048000024105546",
-    "product_id": "736430079244736562",
-    "client_id": "514530959291319360",
-    "client_secret": "C42522DBF17D3D4BBE9D9C1783A54484B7E6844B388B7A67502D36A633A4186B",
-    "project_id": "736430079244736562",
-    "app_id": "106552551",
-    "api_key": "CgB6e3x9BUNiq+r8ebCHNojjjYsMT4pJSjjNDOkm9owtBb6rVI6LjnASoZBRxbjjhObcrV5gANo99fI/eKZDTbWS",
-    "package_name": "io.github.wulkanowy.dev"
-  },
-  "oauth_client": {
-    "client_id": "106552551",
-    "client_type": 1
-  },
-  "app_info": {
-    "app_id": "106552551",
-    "package_name": "io.github.wulkanowy.dev"
-  },
-  "service": {
-    "analytics": {
-      "collector_url": "datacollector-dre.dt.hicloud.com,datacollector-dre.dt.dbankcloud.cn",
-      "collector_url_ru": "datacollector-drru.dt.dbankcloud.ru,datacollector-drru.dt.hicloud.com",
-      "collector_url_sg": "datacollector-dra.dt.hicloud.com,datacollector-dra.dt.dbankcloud.cn",
-      "collector_url_de": "datacollector-dre.dt.hicloud.com,datacollector-dre.dt.dbankcloud.cn",
-      "collector_url_cn": "datacollector-drcn.dt.hicloud.com,datacollector-drcn.dt.dbankcloud.cn",
-      "resource_id": "p1",
-      "channel_id": ""
-    },
-		"search":{
-			"url":"https://search-dre.cloud.huawei.com"
-		},
-		"cloudstorage": {
-      "storage_url_sg_back": "https://agc-storage-dra.cloud.huawei.asia",
-      "storage_url_ru_back": "https://agc-storage-drru.cloud.huawei.ru",
-      "storage_url_ru": "https://agc-storage-drru.cloud.huawei.ru",
-      "storage_url_de_back": "https://agc-storage-dre.cloud.huawei.eu",
-      "storage_url_de": "https://ops-dre.agcstorage.link",
-      "storage_url": "https://agc-storage-drcn.platform.dbankcloud.cn",
-      "storage_url_sg": "https://ops-dra.agcstorage.link",
-      "storage_url_cn_back": "https://agc-storage-drcn.cloud.huawei.com.cn",
-      "storage_url_cn": "https://agc-storage-drcn.platform.dbankcloud.cn"
-    },
-    "ml": {
-      "mlservice_url": "ml-api-dre.ai.dbankcloud.com,ml-api-dre.ai.dbankcloud.cn"
-    }
-  },
-  "region": "DE",
-  "configuration_version": "3.0",
-  "appInfos": [
-    {
-      "package_name": "io.github.wulkanowy.dev",
-      "client": {
-        "app_id": "106552551"
-      },
-      "app_info": {
-        "package_name": "io.github.wulkanowy.dev",
-        "app_id": "106552551"
-      },
-      "oauth_client": {
-        "client_type": 1,
-        "client_id": "106552551"
-      }
-    }
-  ]
-}

app/src/main/AndroidManifest.xml

@@ -155,33 +155,9 @@
                 android:resource="@xml/provider_paths" />
         </provider>
 
-        <!-- 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"
-            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" />

app/src/main/assets/contributors.json

@@ -54,5 +54,9 @@
   {
     "displayName": "Antoni Paduch",
     "githubUsername": "janAte1"
+  },
+  {
+    "displayName": "Kamil Wąsik",
+    "githubUsername": "JestemKamil"
   }
 ]

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

@@ -18,17 +18,13 @@ import io.github.wulkanowy.data.api.SchoolsService
 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 io.github.wulkanowy.utils.RemoteConfigHelper
-import io.github.wulkanowy.utils.WebkitCookieManagerProxy
 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
 
@@ -36,20 +32,6 @@ import javax.inject.Singleton
 @InstallIn(SingletonComponent::class)
 internal class DataModule {
 
-    @Singleton
-    @Provides
-    fun provideSdk(chuckerInterceptor: ChuckerInterceptor, remoteConfig: RemoteConfigHelper) =
-        Sdk().apply {
-            androidVersion = android.os.Build.VERSION.RELEASE
-            buildTag = android.os.Build.MODEL
-            userAgentTemplate = remoteConfig.userAgentTemplate
-            setSimpleHttpLogger { Timber.d(it) }
-            setAdditionalCookieManager(WebkitCookieManagerProxy())
-
-            // for debug only
-            addInterceptor(chuckerInterceptor, network = true)
-        }
-
     @Singleton
     @Provides
     fun provideChuckerCollector(
@@ -254,6 +236,10 @@ internal class DataModule {
     @Provides
     fun provideAdminMessageDao(database: AppDatabase) = database.adminMessagesDao
 
+    @Singleton
+    @Provides
+    fun provideMutesDao(database: AppDatabase) = database.mutedMessageSendersDao
+
     @Singleton
     @Provides
     fun provideGradeDescriptiveDao(database: AppDatabase) = database.gradeDescriptiveDao

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

@@ -1,11 +1,17 @@
 package io.github.wulkanowy.data
 
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.FlowPreview
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.collect
+import kotlinx.coroutines.flow.combine
+import kotlinx.coroutines.flow.debounce
 import kotlinx.coroutines.flow.emitAll
 import kotlinx.coroutines.flow.filter
+import kotlinx.coroutines.flow.filterNot
 import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.flow.flatMapLatest
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.map
@@ -14,16 +20,39 @@ import kotlinx.coroutines.flow.takeWhile
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.coroutines.sync.withLock
 import timber.log.Timber
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.seconds
 
-sealed class Resource<T> {
+sealed interface Resource<out T> {
-
+    /**
-    open class Loading<T> : Resource<T>()
+     * The initial value of a resource flow. Indicates no data that is currently available to be shown,
+     * however with the expectation that the state will transition to another one soon.
+     */
+    open class Loading<T> : Resource<T>
 
+    /**
+     * A semi-loading state with some data available to be displayed (usually cached data loaded from
+     * the database). Still not the target state and it's expected to transition into another one soon.
+     */
     data class Intermediate<T>(val data: T) : Loading<T>()
 
-    data class Success<T>(val data: T) : Resource<T>()
+    /**
+     * The happy-path target state. Data can either be:
+     * - loaded from the database - while it may seem like this case is already handled by the
+     *   Intermediate state, the difference here is semantic. Cached data is returned as Intermediate
+     *   when there's a API request in progress (or soon expected to be), however when there is no
+     *   intention of immediately querying the API, the cached data is returned as a Success.
+     * - fetched from the API.
+     */
+    data class Success<T>(val data: T) : Resource<T>
 
-    data class Error<T>(val error: Throwable) : Resource<T>()
+    /**
+     * Something bad happened and we were unable to get the requested data. This can be caused by
+     * a database error, a network error, or really just any other error. Upon receiving this state
+     * the UI can either: display a full screen error, or, when it has received any data previously,
+     * display a snack bar informing of the problem.
+     */
+    data class Error<T>(val error: Throwable) : Resource<T>
 }
 
 val <T> Resource<T>.dataOrNull: T?
@@ -64,6 +93,22 @@ fun <T, U> Resource<T>.mapData(block: (T) -> U) = when (this) {
     is Resource.Error -> Resource.Error(this.error)
 }
 
+/**
+ * Injects another flow into this flow's resource data.
+ */
+inline fun <T1, T2, R> Flow<Resource<T1>>.combineWithResourceData(
+    flow: Flow<T2>,
+    crossinline block: suspend (T1, T2) -> R
+): Flow<Resource<R>> =
+    combine(flow) { resource, inject ->
+        when (resource) {
+            is Resource.Success -> Resource.Success(block(resource.data, inject))
+            is Resource.Intermediate -> Resource.Intermediate(block(resource.data, inject))
+            is Resource.Loading -> Resource.Loading()
+            is Resource.Error -> Resource.Error(resource.error)
+        }
+    }
+
 fun <T> Flow<Resource<T>>.logResourceStatus(name: String, showData: Boolean = false) = onEach {
     val description = when (it) {
         is Resource.Intermediate -> "intermediate data received" + if (showData) " (data: `${it.data}`)" else ""
@@ -74,8 +119,29 @@ fun <T> Flow<Resource<T>>.logResourceStatus(name: String, showData: Boolean = fa
     Timber.i("$name: $description")
 }
 
-fun <T, U> Flow<Resource<T>>.mapResourceData(block: (T) -> U) = map {
+inline fun <T, U> Flow<Resource<T>>.mapResourceData(crossinline block: suspend (T) -> U) = map {
-    it.mapData(block)
+    when (it) {
+        is Resource.Success -> Resource.Success(block(it.data))
+        is Resource.Intermediate -> Resource.Intermediate(block(it.data))
+        is Resource.Loading -> Resource.Loading()
+        is Resource.Error -> Resource.Error(it.error)
+    }
+}
+
+@OptIn(ExperimentalCoroutinesApi::class)
+fun <T, U> Flow<Resource<T>>.flatMapResourceData(
+    inheritIntermediate: Boolean = true, block: suspend (T) -> Flow<Resource<U>>
+) = flatMapLatest {
+    when (it) {
+        is Resource.Success -> block(it.data)
+        is Resource.Intermediate -> block(it.data).map { newRes ->
+            if (inheritIntermediate && newRes is Resource.Success) Resource.Intermediate(newRes.data)
+            else newRes
+        }
+
+        is Resource.Loading -> flowOf(Resource.Loading())
+        is Resource.Error -> flowOf(Resource.Error(it.error))
+    }
 }
 
 fun <T> Flow<Resource<T>>.onResourceData(block: suspend (T) -> Unit) = onEach {
@@ -105,13 +171,13 @@ fun <T> Flow<Resource<T>>.onResourceSuccess(block: suspend (T) -> Unit) = onEach
     }
 }
 
-fun <T> Flow<Resource<T>>.onResourceError(block: (Throwable) -> Unit) = onEach {
+fun <T> Flow<Resource<T>>.onResourceError(block: suspend (Throwable) -> Unit) = onEach {
     if (it is Resource.Error) {
         block(it.error)
     }
 }
 
-fun <T> Flow<Resource<T>>.onResourceNotLoading(block: () -> Unit) = onEach {
+fun <T> Flow<Resource<T>>.onResourceNotLoading(block: suspend () -> Unit) = onEach {
     if (it !is Resource.Loading) {
         block()
     }
@@ -121,70 +187,99 @@ suspend fun <T> Flow<Resource<T>>.toFirstResult() = filter { it !is Resource.Loa
 
 suspend fun <T> Flow<Resource<T>>.waitForResult() = takeWhile { it is Resource.Loading }.collect()
 
-inline fun <ResultType, RequestType> networkBoundResource(
+// Can cause excessive amounts of `Resource.Intermediate` to be emitted. Unless that is desired,
-    mutex: Mutex = Mutex(),
+// use `debounceIntermediates` to alleviate this behavior.
-    showSavedOnLoading: Boolean = true,
+inline fun <reified T> combineResourceFlows(flows: Iterable<Flow<Resource<T>>>): Flow<Resource<List<T>>> =
-    crossinline isResultEmpty: (ResultType) -> Boolean,
+    combine(flows) { items ->
-    crossinline query: () -> Flow<ResultType>,
+        var isIntermediate = false
-    crossinline fetch: suspend (ResultType) -> RequestType,
+        val data = mutableListOf<T>()
-    crossinline saveFetchResult: suspend (old: ResultType, new: RequestType) -> Unit,
+        for (item in items) {
-    crossinline onFetchFailed: (Throwable) -> Unit = { },
+            when (item) {
-    crossinline shouldFetch: (ResultType) -> Boolean = { true },
+                is Resource.Success -> data.add(item.data)
-    crossinline filterResult: (ResultType) -> ResultType = { it }
+                is Resource.Intermediate -> {
-) = flow {
+                    isIntermediate = true
-    emit(Resource.Loading())
+                    data.add(item.data)
+                }
 
-    val data = query().first()
+                is Resource.Loading -> return@combine Resource.Loading()
-    emitAll(if (shouldFetch(data)) {
+                is Resource.Error -> continue
-        val filteredResult = filterResult(data)
+            }
-
-        if (showSavedOnLoading && !isResultEmpty(filteredResult)) {
-            emit(Resource.Intermediate(filteredResult))
         }
-
+        if (data.isEmpty()) {
-        try {
+            // All items have to be errors for this to happen, so just return the first one.
-            val newData = fetch(data)
+            // mapData is functionally useless and exists only to satisfy the type checker
-            mutex.withLock { saveFetchResult(query().first(), newData) }
+            items.first().mapData { listOf(it) }
-            query().map { Resource.Success(filterResult(it)) }
+        } else if (isIntermediate) {
-        } catch (throwable: Throwable) {
+            Resource.Intermediate(data)
-            onFetchFailed(throwable)
+        } else {
-            flowOf(Resource.Error(throwable))
+            Resource.Success(data)
+        }
+    }
+
+@OptIn(FlowPreview::class)
+fun <T> Flow<Resource<T>>.debounceIntermediates(timeout: Duration = 5.seconds) = flow {
+    var wasIntermediate = false
+
+    emitAll(this@debounceIntermediates.debounce {
+        if (it is Resource.Intermediate) {
+            if (!wasIntermediate) {
+                wasIntermediate = true
+                Duration.ZERO
+            } else {
+                timeout
+            }
+        } else {
+            wasIntermediate = false
+            Duration.ZERO
         }
-    } else {
-        query().map { Resource.Success(filterResult(it)) }
     })
 }
 
+
+inline fun <OutputType, ApiType> networkBoundResource(
+    mutex: Mutex = Mutex(),
+    crossinline isResultEmpty: (OutputType) -> Boolean,
+    crossinline query: () -> Flow<OutputType>,
+    crossinline fetch: suspend () -> ApiType,
+    crossinline saveFetchResult: suspend (old: OutputType, new: ApiType) -> Unit,
+    crossinline shouldFetch: (OutputType) -> Boolean = { true },
+    crossinline filterResult: (OutputType) -> OutputType = { it }
+) = networkBoundResource(
+    mutex = mutex,
+    isResultEmpty = isResultEmpty,
+    query = query,
+    fetch = fetch,
+    saveFetchResult = saveFetchResult,
+    shouldFetch = shouldFetch,
+    mapResult = filterResult
+)
+
 @JvmName("networkBoundResourceWithMap")
-inline fun <ResultType, RequestType, T> networkBoundResource(
+inline fun <DatabaseType, ApiType, OutputType> networkBoundResource(
     mutex: Mutex = Mutex(),
-    showSavedOnLoading: Boolean = true,
+    crossinline isResultEmpty: (OutputType) -> Boolean,
-    crossinline isResultEmpty: (T) -> Boolean,
+    crossinline query: () -> Flow<DatabaseType>,
-    crossinline query: () -> Flow<ResultType>,
+    crossinline fetch: suspend () -> ApiType,
-    crossinline fetch: suspend (ResultType) -> RequestType,
+    crossinline saveFetchResult: suspend (old: DatabaseType, new: ApiType) -> Unit,
-    crossinline saveFetchResult: suspend (old: ResultType, new: RequestType) -> Unit,
+    crossinline shouldFetch: (DatabaseType) -> Boolean = { true },
-    crossinline onFetchFailed: (Throwable) -> Unit = { },
+    crossinline mapResult: (DatabaseType) -> OutputType,
-    crossinline shouldFetch: (ResultType) -> Boolean = { true },
-    crossinline mapResult: (ResultType) -> T,
 ) = flow {
     emit(Resource.Loading())
 
     val data = query().first()
-    emitAll(if (shouldFetch(data)) {
+    if (shouldFetch(data)) {
-        val mappedResult = mapResult(data)
+        emit(Resource.Intermediate(data))
 
-        if (showSavedOnLoading && !isResultEmpty(mappedResult)) {
-            emit(Resource.Intermediate(mappedResult))
-        }
         try {
-            val newData = fetch(data)
+            val newData = fetch()
             mutex.withLock { saveFetchResult(query().first(), newData) }
-            query().map { Resource.Success(mapResult(it)) }
         } catch (throwable: Throwable) {
-            onFetchFailed(throwable)
+            emit(Resource.Error(throwable))
-            flowOf(Resource.Error(throwable))
+            return@flow
         }
-    } else {
+    }
-        query().map { Resource.Success(mapResult(it)) }
+
-    })
+    emitAll(query().map { Resource.Success(it) })
 }
+    .mapResourceData { mapResult(it) }
+    .filterNot { it is Resource.Intermediate && isResultEmpty(it.data) }

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

@@ -0,0 +1,64 @@
+package io.github.wulkanowy.data
+
+import com.chuckerteam.chucker.api.ChuckerInterceptor
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.utils.RemoteConfigHelper
+import io.github.wulkanowy.utils.WebkitCookieManagerProxy
+import timber.log.Timber
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class WulkanowySdkFactory @Inject constructor(
+    private val chuckerInterceptor: ChuckerInterceptor,
+    private val remoteConfig: RemoteConfigHelper,
+    private val webkitCookieManagerProxy: WebkitCookieManagerProxy
+) {
+
+    private val sdk = Sdk().apply {
+        androidVersion = android.os.Build.VERSION.RELEASE
+        buildTag = android.os.Build.MODEL
+        userAgentTemplate = remoteConfig.userAgentTemplate
+        setSimpleHttpLogger { Timber.d(it) }
+        setAdditionalCookieManager(webkitCookieManagerProxy)
+
+        // for debug only
+        addInterceptor(chuckerInterceptor, network = true)
+    }
+
+    fun create() = sdk
+
+    fun create(student: Student, semester: Semester? = null): Sdk {
+        return create().apply {
+            email = student.email
+            password = student.password
+            symbol = student.symbol
+            schoolSymbol = student.schoolSymbol
+            studentId = student.studentId
+            classId = student.classId
+            emptyCookieJarInterceptor = true
+
+            if (Sdk.Mode.valueOf(student.loginMode) == Sdk.Mode.HEBE) {
+                mobileBaseUrl = student.mobileBaseUrl
+            } else {
+                scrapperBaseUrl = student.scrapperBaseUrl
+                domainSuffix = student.scrapperDomainSuffix
+                loginType = Sdk.ScrapperLoginType.valueOf(student.loginType)
+            }
+
+            mode = Sdk.Mode.valueOf(student.loginMode)
+            mobileBaseUrl = student.mobileBaseUrl
+            keyId = student.certificateKey
+            privatePem = student.privateKey
+
+            if (semester != null) {
+                diaryId = semester.diaryId
+                kindergartenDiaryId = semester.kindergartenDiaryId
+                schoolYear = semester.schoolYear
+                unitId = semester.unitId
+            }
+        }
+    }
+}

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

@@ -25,6 +25,7 @@ import io.github.wulkanowy.data.db.dao.MailboxDao
 import io.github.wulkanowy.data.db.dao.MessageAttachmentDao
 import io.github.wulkanowy.data.db.dao.MessagesDao
 import io.github.wulkanowy.data.db.dao.MobileDeviceDao
+import io.github.wulkanowy.data.db.dao.MutedMessageSendersDao
 import io.github.wulkanowy.data.db.dao.NoteDao
 import io.github.wulkanowy.data.db.dao.NotificationDao
 import io.github.wulkanowy.data.db.dao.RecipientDao
@@ -56,6 +57,7 @@ import io.github.wulkanowy.data.db.entities.Mailbox
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.MessageAttachment
 import io.github.wulkanowy.data.db.entities.MobileDevice
+import io.github.wulkanowy.data.db.entities.MutedMessageSender
 import io.github.wulkanowy.data.db.entities.Note
 import io.github.wulkanowy.data.db.entities.Notification
 import io.github.wulkanowy.data.db.entities.Recipient
@@ -157,6 +159,7 @@ import javax.inject.Singleton
         SchoolAnnouncement::class,
         Notification::class,
         AdminMessage::class,
+        MutedMessageSender::class,
         GradeDescriptive::class,
     ],
     autoMigrations = [
@@ -169,6 +172,8 @@ import javax.inject.Singleton
         AutoMigration(from = 56, to = 57, spec = Migration57::class),
         AutoMigration(from = 57, to = 58, spec = Migration58::class),
         AutoMigration(from = 58, to = 59),
+        AutoMigration(from = 59, to = 60),
+        AutoMigration(from = 60, to = 61),
     ],
     version = AppDatabase.VERSION_SCHEMA,
     exportSchema = true
@@ -177,7 +182,7 @@ import javax.inject.Singleton
 abstract class AppDatabase : RoomDatabase() {
 
     companion object {
-        const val VERSION_SCHEMA = 59
+        const val VERSION_SCHEMA = 61
 
         fun getMigrations(sharedPrefProvider: SharedPrefProvider, appInfo: AppInfo) = arrayOf(
             Migration2(),
@@ -303,5 +308,7 @@ abstract class AppDatabase : RoomDatabase() {
 
     abstract val adminMessagesDao: AdminMessageDao
 
+    abstract val mutedMessageSendersDao: MutedMessageSendersDao
+  
     abstract val gradeDescriptiveDao: GradeDescriptiveDao
 }

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

@@ -2,24 +2,14 @@ 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> {
+interface AdminMessageDao : BaseDao<AdminMessage> {
 
     @Query("SELECT * FROM AdminMessages")
-    abstract fun loadAll(): Flow<List<AdminMessage>>
+    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/BaseDao.kt

@@ -3,6 +3,7 @@ package io.github.wulkanowy.data.db.dao
 import androidx.room.Delete
 import androidx.room.Insert
 import androidx.room.OnConflictStrategy
+import androidx.room.Transaction
 import androidx.room.Update
 
 interface BaseDao<T> {
@@ -15,4 +16,10 @@ interface BaseDao<T> {
 
     @Delete
     suspend fun deleteAll(items: List<T>)
+
+    @Transaction
+    suspend fun removeOldAndSaveNew(oldItems: List<T>, newItems: List<T>) {
+        deleteAll(oldItems)
+        insertAll(newItems)
+    }
 }

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

@@ -5,15 +5,23 @@ import androidx.room.Query
 import androidx.room.Transaction
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.MessageWithAttachment
+import io.github.wulkanowy.data.db.entities.MessageWithMutedAuthor
 import kotlinx.coroutines.flow.Flow
 
 @Dao
 interface MessagesDao : BaseDao<Message> {
-
     @Transaction
     @Query("SELECT * FROM Messages WHERE message_global_key = :messageGlobalKey")
     fun loadMessageWithAttachment(messageGlobalKey: String): Flow<MessageWithAttachment?>
 
+    @Transaction
+    @Query("SELECT * FROM Messages WHERE mailbox_key = :mailboxKey AND folder_id = :folder ORDER BY date DESC")
+    fun loadMessagesWithMutedAuthor(mailboxKey: String, folder: Int): Flow<List<MessageWithMutedAuthor>>
+
+    @Transaction
+    @Query("SELECT * FROM Messages WHERE email = :email AND folder_id = :folder ORDER BY date DESC")
+    fun loadMessagesWithMutedAuthor(folder: Int, email: String): Flow<List<MessageWithMutedAuthor>>
+
     @Query("SELECT * FROM Messages WHERE mailbox_key = :mailboxKey AND folder_id = :folder ORDER BY date DESC")
     fun loadAll(mailboxKey: String, folder: Int): Flow<List<Message>>
 

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

@@ -0,0 +1,20 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.MutedMessageSender
+
+@Dao
+interface MutedMessageSendersDao : BaseDao<MutedMessageSender> {
+
+    @Query("SELECT COUNT(*) FROM MutedMessageSenders WHERE author = :author")
+    suspend fun checkMute(author: String): Boolean
+
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
+    suspend fun insertMute(mute: MutedMessageSender): Long
+
+    @Query("DELETE FROM MutedMessageSenders WHERE author = :author")
+    suspend fun deleteMute(author: String)
+}

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

@@ -15,5 +15,5 @@ interface TimetableDao : BaseDao<Timetable> {
     fun loadAll(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): Flow<List<Timetable>>
 
     @Query("SELECT * FROM Timetable WHERE diary_id = :diaryId AND student_id = :studentId AND date >= :from AND date <= :end")
-    fun load(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): List<Timetable>
+    suspend fun load(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): List<Timetable>
 }

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

@@ -2,11 +2,15 @@ package io.github.wulkanowy.data.db.entities
 
 import androidx.room.Embedded
 import androidx.room.Relation
+import java.io.Serializable
 
 data class MessageWithAttachment(
     @Embedded
     val message: Message,
 
     @Relation(parentColumn = "message_global_key", entityColumn = "message_global_key")
-    val attachments: List<MessageAttachment>
+    val attachments: List<MessageAttachment>,
-)
+
+    @Relation(parentColumn = "correspondents", entityColumn = "author")
+    val mutedMessageSender: MutedMessageSender?,
+) : Serializable

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

@@ -0,0 +1,12 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.Embedded
+import androidx.room.Relation
+
+data class MessageWithMutedAuthor(
+    @Embedded
+    val message: Message,
+
+    @Relation(parentColumn = "correspondents", entityColumn = "author")
+    val mutedMessageSender: MutedMessageSender?,
+)

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

@@ -0,0 +1,15 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.io.Serializable
+
+@Entity(tableName = "MutedMessageSenders")
+data class MutedMessageSender(
+    @ColumnInfo(name = "author")
+    val author: String,
+) : Serializable {
+    @PrimaryKey(autoGenerate = true)
+    var id: Long = 0
+}

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

@@ -16,7 +16,9 @@ data class SchoolAnnouncement(
 
     val subject: String,
 
-    val content: String
+    val content: String,
+
+    val author: String? = null,
 ) : Serializable {
 
     @PrimaryKey(autoGenerate = true)

app/src/main/java/io/github/wulkanowy/data/enums/AttendanceCalculatorSortingMode.kt

@@ -0,0 +1,13 @@
+package io.github.wulkanowy.data.enums
+
+enum class AttendanceCalculatorSortingMode(private val value: String) {
+    ALPHABETIC("alphabetic"),
+    ATTENDANCE("attendance_percentage"),
+    LESSON_BALANCE("lesson_balance");
+
+    companion object {
+        fun getByValue(value: String) =
+            AttendanceCalculatorSortingMode.values()
+                .find { it.value == value } ?: ALPHABETIC
+    }
+}

app/src/main/java/io/github/wulkanowy/data/enums/MessageFolder.kt

@@ -3,5 +3,10 @@ package io.github.wulkanowy.data.enums
 enum class MessageFolder(val id: Int = 1) {
     RECEIVED(1),
     SENT(2),
-    TRASHED(3)
+    TRASHED(3),
+    ;
+
+    companion object {
+        fun byId(id: Int) = entries.first { it.id == id }
+    }
 }

app/src/main/java/io/github/wulkanowy/data/mappers/DirectorInformationMapper.kt

@@ -3,12 +3,26 @@ package io.github.wulkanowy.data.mappers
 import io.github.wulkanowy.data.db.entities.SchoolAnnouncement
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.sdk.pojo.DirectorInformation as SdkDirectorInformation
+import io.github.wulkanowy.sdk.pojo.LastAnnouncement as SdkLastAnnouncement
 
+@JvmName("mapDirectorInformationToEntities")
 fun List<SdkDirectorInformation>.mapToEntities(student: Student) = map {
     SchoolAnnouncement(
         userLoginId = student.userLoginId,
         date = it.date,
         subject = it.subject,
         content = it.content,
+        author = null,
+    )
+}
+
+@JvmName("mapLastAnnouncementsToEntities")
+fun List<SdkLastAnnouncement>.mapToEntities(student: Student) = map {
+    SchoolAnnouncement(
+        userLoginId = student.userLoginId,
+        date = it.date,
+        subject = it.subject,
+        content = it.content,
+        author = it.author,
     )
 }

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

@@ -0,0 +1,14 @@
+package io.github.wulkanowy.data.pojos
+
+data class AttendanceData(
+    val subjectName: String,
+    val lessonBalance: Int,
+    val presences: Int,
+    val absences: Int,
+) {
+    val total: Int
+        get() = presences + absences
+
+    val presencePercentage: Double
+        get() = if (total == 0) 0.0 else (presences.toDouble() / total) * 100
+}

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

@@ -6,6 +6,7 @@ import io.github.wulkanowy.data.db.dao.AdminMessageDao
 import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.data.networkBoundResource
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.filterNot
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -28,6 +29,6 @@ class AdminMessageRepository @Inject constructor(
             saveFetchResult = { oldItems, newItems ->
                 adminMessageDao.removeOldAndSaveNew(oldItems, newItems)
             },
-            showSavedOnLoading = false,
         )
+            .filterNot { it is Resource.Intermediate }
 }

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

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.AttendanceDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
 import io.github.wulkanowy.data.db.entities.Attendance
@@ -7,19 +8,14 @@ import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.sdk.pojo.Absent
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.sunday
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
-import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
-import kotlinx.coroutines.withContext
 import java.time.LocalDate
 import java.time.LocalDateTime
 import java.time.LocalTime
@@ -30,7 +26,7 @@ import javax.inject.Singleton
 class AttendanceRepository @Inject constructor(
     private val attendanceDb: AttendanceDao,
     private val timetableDb: TimetableDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -58,23 +54,21 @@ class AttendanceRepository @Inject constructor(
             attendanceDb.loadAll(semester.diaryId, semester.studentId, start.monday, end.sunday)
         },
         fetch = {
-            val lessons = withContext(Dispatchers.IO) {
+            val lessons = timetableDb.load(
-                timetableDb.load(
+                semester.diaryId, semester.studentId, start.monday, end.sunday
-                    semester.diaryId, semester.studentId, start.monday, end.sunday
+            )
-                )
+            wulkanowySdkFactory.create(student, semester)
-            }
-            sdk.init(student)
-                .switchSemester(semester)
                 .getAttendance(start.monday, end.sunday)
                 .mapToEntities(semester, lessons)
         },
         saveFetchResult = { old, new ->
-            attendanceDb.deleteAll(old uniqueSubtract new)
             val attendanceToAdd = (new uniqueSubtract old).map { newAttendance ->
                 newAttendance.apply { if (notify) isNotified = false }
             }
-            attendanceDb.insertAll(attendanceToAdd)
+            attendanceDb.removeOldAndSaveNew(
-
+                oldItems = old uniqueSubtract new,
+                newItems = attendanceToAdd,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester, start, end))
         },
         filterResult = { it.filter { item -> item.date in start..end } }
@@ -93,8 +87,10 @@ class AttendanceRepository @Inject constructor(
     }
 
     suspend fun excuseForAbsence(
-        student: Student, semester: Semester,
+        student: Student,
-        absenceList: List<Attendance>, reason: String? = null
+        semester: Semester,
+        absenceList: List<Attendance>,
+        reason: String? = null
     ) {
         val items = absenceList.map { attendance ->
             Absent(
@@ -102,8 +98,7 @@ class AttendanceRepository @Inject constructor(
                 timeId = attendance.timeId
             )
         }
-        sdk.init(student)
+        wulkanowySdkFactory.create(student, semester)
-            .switchSemester(semester)
             .excuseForAbsence(items, reason)
     }
 }

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

@@ -1,15 +1,15 @@
 package io.github.wulkanowy.data.repositories
 
+import androidx.room.withTransaction
+import io.github.wulkanowy.data.WulkanowySdkFactory
+import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.dao.AttendanceSummaryDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -18,8 +18,9 @@ import javax.inject.Singleton
 @Singleton
 class AttendanceSummaryRepository @Inject constructor(
     private val attendanceDb: AttendanceSummaryDao,
-    private val sdk: Sdk,
     private val refreshHelper: AutoRefreshHelper,
+    private val appDatabase: AppDatabase,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     private val saveFetchResultMutex = Mutex()
@@ -40,14 +41,15 @@ class AttendanceSummaryRepository @Inject constructor(
         },
         query = { attendanceDb.loadAll(semester.diaryId, semester.studentId, subjectId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getAttendanceSummary(subjectId)
                 .mapToEntities(semester, subjectId)
         },
         saveFetchResult = { old, new ->
-            attendanceDb.deleteAll(old uniqueSubtract new)
+            appDatabase.withTransaction {
-            attendanceDb.insertAll(new uniqueSubtract old)
+                attendanceDb.deleteAll(old uniqueSubtract new)
+                attendanceDb.insertAll(new uniqueSubtract old)
+            }
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester))
         }
     )

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

@@ -1,12 +1,16 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.CompletedLessonsDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.utils.AutoRefreshHelper
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.getRefreshKey
+import io.github.wulkanowy.utils.monday
+import io.github.wulkanowy.utils.sunday
+import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import java.time.LocalDate
 import javax.inject.Inject
@@ -15,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class CompletedLessonsRepository @Inject constructor(
     private val completedLessonsDb: CompletedLessonsDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -47,14 +51,15 @@ class CompletedLessonsRepository @Inject constructor(
             )
         },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getCompletedLessons(start.monday, end.sunday)
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            completedLessonsDb.deleteAll(old uniqueSubtract new)
+            completedLessonsDb.removeOldAndSaveNew(
-            completedLessonsDb.insertAll(new uniqueSubtract old)
+                oldItems = old uniqueSubtract new,
+                newItems = new uniqueSubtract old,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester, start, end))
         },
         filterResult = { it.filter { item -> item.date in start..end } }

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

@@ -1,16 +1,14 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.ConferenceDao
 import io.github.wulkanowy.data.db.entities.Conference
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -21,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class ConferenceRepository @Inject constructor(
     private val conferenceDb: ConferenceDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -46,19 +44,18 @@ class ConferenceRepository @Inject constructor(
             conferenceDb.loadAll(semester.diaryId, student.studentId, startDate)
         },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getConferences()
                 .mapToEntities(semester)
                 .filter { it.date >= startDate }
         },
         saveFetchResult = { old, new ->
-            val conferencesToSave = (new uniqueSubtract old).onEach {
+            conferenceDb.removeOldAndSaveNew(
-                if (notify) it.isNotified = false
+                oldItems = old uniqueSubtract new,
-            }
+                newItems = (new uniqueSubtract old).onEach {
-
+                    if (notify) it.isNotified = false
-            conferenceDb.deleteAll(old uniqueSubtract new)
+                },
-            conferenceDb.insertAll(conferencesToSave)
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester))
         }
     )

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

@@ -1,18 +1,16 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.ExamDao
 import io.github.wulkanowy.data.db.entities.Exam
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.endExamsDay
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.startExamsDay
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -23,7 +21,7 @@ import javax.inject.Singleton
 @Singleton
 class ExamRepository @Inject constructor(
     private val examDb: ExamDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -56,18 +54,17 @@ class ExamRepository @Inject constructor(
             )
         },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getExams(start.startExamsDay, start.endExamsDay)
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            val examsToSave = (new uniqueSubtract old).onEach {
+            examDb.removeOldAndSaveNew(
-                if (notify) it.isNotified = false
+                oldItems = old uniqueSubtract new,
-            }
+                newItems = (new uniqueSubtract old).onEach {
-
+                    if (notify) it.isNotified = false
-            examDb.deleteAll(old uniqueSubtract new)
+                },
-            examDb.insertAll(examsToSave)
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester, start, end))
         },
         filterResult = { it.filter { item -> item.date in start..end } }

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

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.GradeDao
 import io.github.wulkanowy.data.db.dao.GradeDescriptiveDao
 import io.github.wulkanowy.data.db.dao.GradeSummaryDao
@@ -10,11 +11,8 @@ import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.toLocalDate
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
@@ -30,7 +28,7 @@ class GradeRepository @Inject constructor(
     private val gradeDb: GradeDao,
     private val gradeSummaryDb: GradeSummaryDao,
     private val gradeDescriptiveDb: GradeDescriptiveDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -63,8 +61,7 @@ class GradeRepository @Inject constructor(
             }
         },
         fetch = {
-            val (details, summary, descriptive) = sdk.init(student)
+            val (details, summary, descriptive) = wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getGrades(semester.semesterId)
 
             Triple(
@@ -87,10 +84,12 @@ class GradeRepository @Inject constructor(
         new: List<GradeDescriptive>,
         notify: Boolean
     ) {
-        gradeDescriptiveDb.deleteAll(old uniqueSubtract new)
+        gradeDescriptiveDb.removeOldAndSaveNew(
-        gradeDescriptiveDb.insertAll((new uniqueSubtract old).onEach {
+            oldItems = old uniqueSubtract new,
-            if (notify) it.isNotified = false
+            newItems = (new uniqueSubtract old).onEach {
-        })
+                if (notify) it.isNotified = false
+            },
+        )
     }
 
     private suspend fun refreshGradeDetails(
@@ -101,13 +100,16 @@ class GradeRepository @Inject constructor(
     ) {
         val notifyBreakDate = oldGrades.maxByOrNull { it.date }?.date
             ?: student.registrationDate.toLocalDate()
-        gradeDb.deleteAll(oldGrades uniqueSubtract newDetails)
+
-        gradeDb.insertAll((newDetails uniqueSubtract oldGrades).onEach {
+        gradeDb.removeOldAndSaveNew(
-            if (it.date >= notifyBreakDate) it.apply {
+            oldItems = oldGrades uniqueSubtract newDetails,
-                isRead = false
+            newItems = (newDetails uniqueSubtract oldGrades).onEach {
-                if (notify) isNotified = false
+                if (it.date >= notifyBreakDate) it.apply {
-            }
+                    isRead = false
-        })
+                    if (notify) isNotified = false
+                }
+            },
+        )
     }
 
     private suspend fun refreshGradeSummaries(
@@ -115,31 +117,43 @@ class GradeRepository @Inject constructor(
         newSummary: List<GradeSummary>,
         notify: Boolean
     ) {
-        gradeSummaryDb.deleteAll(oldSummaries uniqueSubtract newSummary)
+        gradeSummaryDb.removeOldAndSaveNew(
-        gradeSummaryDb.insertAll((newSummary uniqueSubtract oldSummaries).onEach { summary ->
+            oldItems = oldSummaries uniqueSubtract newSummary,
-            val oldSummary = oldSummaries.find { old -> old.subject == summary.subject }
+            newItems = (newSummary uniqueSubtract oldSummaries).onEach { summary ->
-            summary.isPredictedGradeNotified = when {
+                getGradeSummaryWithUpdatedNotificationState(
-                summary.predictedGrade.isEmpty() -> true
+                    summary = summary,
-                notify && oldSummary?.predictedGrade != summary.predictedGrade -> false
+                    oldSummary = oldSummaries.find { it.subject == summary.subject },
-                else -> true
+                    notify = notify,
-            }
+                )
-            summary.isFinalGradeNotified = when {
+            },
-                summary.finalGrade.isEmpty() -> true
+        )
-                notify && oldSummary?.finalGrade != summary.finalGrade -> false
+    }
-                else -> true
-            }
 
-            summary.predictedGradeLastChange = when {
+    private fun getGradeSummaryWithUpdatedNotificationState(
-                oldSummary == null -> Instant.now()
+        summary: GradeSummary,
-                summary.predictedGrade != oldSummary.predictedGrade -> Instant.now()
+        oldSummary: GradeSummary?,
-                else -> oldSummary.predictedGradeLastChange
+        notify: Boolean,
-            }
+    ) {
-            summary.finalGradeLastChange = when {
+        summary.isPredictedGradeNotified = when {
-                oldSummary == null -> Instant.now()
+            summary.predictedGrade.isEmpty() -> true
-                summary.finalGrade != oldSummary.finalGrade -> Instant.now()
+            notify && oldSummary?.predictedGrade != summary.predictedGrade -> false
-                else -> oldSummary.finalGradeLastChange
+            else -> true
-            }
+        }
-        })
+        summary.isFinalGradeNotified = when {
+            summary.finalGrade.isEmpty() -> true
+            notify && oldSummary?.finalGrade != summary.finalGrade -> false
+            else -> true
+        }
+        summary.predictedGradeLastChange = when {
+            oldSummary == null -> Instant.now()
+            summary.predictedGrade != oldSummary.predictedGrade -> Instant.now()
+            else -> oldSummary.predictedGradeLastChange
+        }
+        summary.finalGradeLastChange = when {
+            oldSummary == null -> Instant.now()
+            summary.finalGrade != oldSummary.finalGrade -> Instant.now()
+            else -> oldSummary.finalGradeLastChange
+        }
     }
 
     fun getUnreadGrades(semester: Semester): Flow<List<Grade>> {

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

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.GradePartialStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradePointsStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeSemesterStatisticsDao
@@ -12,14 +13,11 @@ import io.github.wulkanowy.data.mappers.mapPointsToStatisticsItems
 import io.github.wulkanowy.data.mappers.mapSemesterToStatisticItems
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
-import java.util.*
+import java.util.Locale
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -28,7 +26,7 @@ class GradeStatisticsRepository @Inject constructor(
     private val gradePartialStatisticsDb: GradePartialStatisticsDao,
     private val gradePointsStatisticsDb: GradePointsStatisticsDao,
     private val gradeSemesterStatisticsDb: GradeSemesterStatisticsDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -56,14 +54,15 @@ class GradeStatisticsRepository @Inject constructor(
         },
         query = { gradePartialStatisticsDb.loadAll(semester.semesterId, semester.studentId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getGradesPartialStatistics(semester.semesterId)
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            gradePartialStatisticsDb.deleteAll(old uniqueSubtract new)
+            gradePartialStatisticsDb.removeOldAndSaveNew(
-            gradePartialStatisticsDb.insertAll(new uniqueSubtract old)
+                oldItems = old uniqueSubtract new,
+                newItems = new uniqueSubtract old,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(partialCacheKey, semester))
         },
         mapResult = { items ->
@@ -80,6 +79,7 @@ class GradeStatisticsRepository @Inject constructor(
                     )
                     listOf(summaryItem) + items
                 }
+
                 else -> items.filter { it.subject == subjectName }
             }.mapPartialToStatisticItems()
         }
@@ -101,14 +101,15 @@ class GradeStatisticsRepository @Inject constructor(
         },
         query = { gradeSemesterStatisticsDb.loadAll(semester.semesterId, semester.studentId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getGradesSemesterStatistics(semester.semesterId)
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            gradeSemesterStatisticsDb.deleteAll(old uniqueSubtract new)
+            gradeSemesterStatisticsDb.removeOldAndSaveNew(
-            gradeSemesterStatisticsDb.insertAll(new uniqueSubtract old)
+                oldItems = old uniqueSubtract new,
+                newItems = new uniqueSubtract old,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(semesterCacheKey, semester))
         },
         mapResult = { items ->
@@ -138,6 +139,7 @@ class GradeStatisticsRepository @Inject constructor(
                     }
                     listOf(summaryItem) + itemsWithAverage
                 }
+
                 else -> itemsWithAverage.filter { it.subject == subjectName }
             }.mapSemesterToStatisticItems()
         }
@@ -157,14 +159,15 @@ class GradeStatisticsRepository @Inject constructor(
         },
         query = { gradePointsStatisticsDb.loadAll(semester.semesterId, semester.studentId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getGradesPointsStatistics(semester.semesterId)
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            gradePointsStatisticsDb.deleteAll(old uniqueSubtract new)
+            gradePointsStatisticsDb.removeOldAndSaveNew(
-            gradePointsStatisticsDb.insertAll(new uniqueSubtract old)
+                oldItems = old uniqueSubtract new,
+                newItems = new uniqueSubtract old,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(pointsCacheKey, semester))
         },
         mapResult = { items ->

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

@@ -1,18 +1,16 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.HomeworkDao
 import io.github.wulkanowy.data.db.entities.Homework
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.sunday
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import java.time.LocalDate
@@ -22,7 +20,7 @@ import javax.inject.Singleton
 @Singleton
 class HomeworkRepository @Inject constructor(
     private val homeworkDb: HomeworkDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -55,20 +53,19 @@ class HomeworkRepository @Inject constructor(
             )
         },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getHomework(start.monday, end.sunday)
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            val homeWorkToSave = (new uniqueSubtract old).onEach {
-                if (notify) it.isNotified = false
-            }
             val filteredOld = old.filterNot { it.isAddedByUser }
 
-            homeworkDb.deleteAll(filteredOld uniqueSubtract new)
+            homeworkDb.removeOldAndSaveNew(
-            homeworkDb.insertAll(homeWorkToSave)
+                oldItems = filteredOld uniqueSubtract new,
-
+                newItems = (new uniqueSubtract old).onEach {
+                    if (notify) it.isNotified = false
+                },
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester, start, end))
         }
     )

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

@@ -1,12 +1,11 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.LuckyNumberDao
 import io.github.wulkanowy.data.db.entities.LuckyNumber
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntity
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
-import io.github.wulkanowy.utils.init
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.sync.Mutex
@@ -18,7 +17,7 @@ import javax.inject.Singleton
 @Singleton
 class LuckyNumberRepository @Inject constructor(
     private val luckyNumberDb: LuckyNumberDao,
-    private val sdk: Sdk
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     private val saveFetchResultMutex = Mutex()
@@ -33,17 +32,18 @@ class LuckyNumberRepository @Inject constructor(
         shouldFetch = { it == null || forceRefresh },
         query = { luckyNumberDb.load(student.studentId, now()) },
         fetch = {
-            sdk.init(student).getLuckyNumber(student.schoolShortName)?.mapToEntity(student)
+            wulkanowySdkFactory.create(student)
+                .getLuckyNumber(student.schoolShortName)
+                ?.mapToEntity(student)
         },
         saveFetchResult = { oldLuckyNumber, newLuckyNumber ->
             newLuckyNumber ?: return@networkBoundResource
 
             if (newLuckyNumber != oldLuckyNumber) {
-                val updatedLuckNumberList =
+                luckyNumberDb.removeOldAndSaveNew(
-                    listOf(newLuckyNumber.apply { if (notify) isNotified = false })
+                    oldItems = listOfNotNull(oldLuckyNumber),
-
+                    newItems = listOf(newLuckyNumber.apply { if (notify) isNotified = false }),
-                oldLuckyNumber?.let { luckyNumberDb.deleteAll(listOfNotNull(it)) }
+                )
-                luckyNumberDb.insertAll(updatedLuckNumberList)
             }
         }
     )

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

@@ -4,17 +4,22 @@ import android.content.Context
 import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.Resource
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.db.dao.MailboxDao
 import io.github.wulkanowy.data.db.dao.MessageAttachmentDao
 import io.github.wulkanowy.data.db.dao.MessagesDao
+import io.github.wulkanowy.data.db.dao.MutedMessageSendersDao
 import io.github.wulkanowy.data.db.entities.Mailbox
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.MessageWithAttachment
+import io.github.wulkanowy.data.db.entities.MessageWithMutedAuthor
+import io.github.wulkanowy.data.db.entities.MutedMessageSender
 import io.github.wulkanowy.data.db.entities.Recipient
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.enums.MessageFolder
 import io.github.wulkanowy.data.enums.MessageFolder.RECEIVED
+import io.github.wulkanowy.data.enums.MessageFolder.SENT
 import io.github.wulkanowy.data.enums.MessageFolder.TRASHED
 import io.github.wulkanowy.data.mappers.mapFromEntities
 import io.github.wulkanowy.data.mappers.mapToEntities
@@ -22,16 +27,14 @@ import io.github.wulkanowy.data.networkBoundResource
 import io.github.wulkanowy.data.onResourceError
 import io.github.wulkanowy.data.onResourceSuccess
 import io.github.wulkanowy.data.pojos.MessageDraft
+import io.github.wulkanowy.data.toFirstResult
 import io.github.wulkanowy.data.waitForResult
 import io.github.wulkanowy.domain.messages.GetMailboxByStudentUseCase
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.sdk.pojo.Folder
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
-import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.sync.Mutex
 import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
@@ -42,8 +45,9 @@ import javax.inject.Singleton
 @Singleton
 class MessageRepository @Inject constructor(
     private val messagesDb: MessagesDao,
+    private val mutedMessageSendersDao: MutedMessageSendersDao,
     private val messageAttachmentDao: MessageAttachmentDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     @ApplicationContext private val context: Context,
     private val refreshHelper: AutoRefreshHelper,
     private val sharedPrefProvider: SharedPrefProvider,
@@ -51,7 +55,6 @@ class MessageRepository @Inject constructor(
     private val mailboxDao: MailboxDao,
     private val getMailboxByStudentUseCase: GetMailboxByStudentUseCase,
 ) {
-
     private val saveFetchResultMutex = Mutex()
 
     private val messagesCacheKey = "message"
@@ -63,7 +66,7 @@ class MessageRepository @Inject constructor(
         folder: MessageFolder,
         forceRefresh: Boolean,
         notify: Boolean = false,
-    ): Flow<Resource<List<Message>>> = networkBoundResource(
+    ): Flow<Resource<List<MessageWithMutedAuthor>>> = networkBoundResource(
         mutex = saveFetchResultMutex,
         isResultEmpty = { it.isEmpty() },
         shouldFetch = {
@@ -74,21 +77,30 @@ class MessageRepository @Inject constructor(
         },
         query = {
             if (mailbox == null) {
-                messagesDb.loadAll(folder.id, student.email)
+                messagesDb.loadMessagesWithMutedAuthor(folder.id, student.email)
-            } else messagesDb.loadAll(mailbox.globalKey, folder.id)
+            } else messagesDb.loadMessagesWithMutedAuthor(mailbox.globalKey, folder.id)
         },
         fetch = {
-            sdk.init(student).getMessages(
+            wulkanowySdkFactory.create(student)
-                folder = Folder.valueOf(folder.name),
+                .getMessages(
-                mailboxKey = mailbox?.globalKey,
+                    folder = Folder.valueOf(folder.name),
-            ).mapToEntities(student, mailbox, mailboxDao.loadAll(student.email))
+                    mailboxKey = mailbox?.globalKey,
+                )
+                .mapToEntities(
+                    student = student,
+                    mailbox = mailbox,
+                    allMailboxes = mailboxDao.loadAll(student.email)
+                )
         },
-        saveFetchResult = { old, new ->
+        saveFetchResult = { oldWithAuthors, new ->
-            messagesDb.deleteAll(old uniqueSubtract new)
+            val old = oldWithAuthors.map { it.message }
-            messagesDb.insertAll((new uniqueSubtract old).onEach {
+            messagesDb.removeOldAndSaveNew(
-                it.isNotified = !notify
+                oldItems = old uniqueSubtract new,
-            })
+                newItems = (new uniqueSubtract old).onEach {
-
+                    val muted = isMuted(it.correspondents)
+                    it.isNotified = !notify || muted
+                },
+            )
             refreshHelper.updateLastRefreshTimestamp(
                 getRefreshKey(messagesCacheKey, mailbox, folder)
             )
@@ -106,14 +118,13 @@ class MessageRepository @Inject constructor(
             Timber.d("Message content in db empty: ${it.message.content.isBlank()}")
             (it.message.unread && markAsRead) || it.message.content.isBlank()
         },
-        query = {
+        query = { messagesDb.loadMessageWithAttachment(message.messageGlobalKey) },
-            messagesDb.loadMessageWithAttachment(message.messageGlobalKey)
-        },
         fetch = {
-            sdk.init(student).getMessageDetails(
+            wulkanowySdkFactory.create(student)
-                messageKey = it!!.message.messageGlobalKey,
+                .getMessageDetails(
-                markAsRead = message.unread && markAsRead,
+                    messageKey = message.messageGlobalKey,
-            )
+                    markAsRead = message.unread && markAsRead,
+                )
         },
         saveFetchResult = { old, new ->
             checkNotNull(old) { "Fetched message no longer exist!" }
@@ -152,22 +163,36 @@ class MessageRepository @Inject constructor(
         subject: String,
         content: String,
         recipients: List<Recipient>,
-        mailboxId: String,
+        mailbox: Mailbox,
     ) {
-        sdk.init(student).sendMessage(
+        wulkanowySdkFactory.create(student)
-            subject = subject,
+            .sendMessage(
-            content = content,
+                subject = subject,
-            recipients = recipients.mapFromEntities(),
+                content = content,
-            mailboxId = mailboxId,
+                recipients = recipients.mapFromEntities(),
-        )
+                mailboxId = mailbox.globalKey,
+            )
+        refreshFolders(student, mailbox, listOf(SENT))
     }
 
-    suspend fun deleteMessages(student: Student, mailbox: Mailbox?, messages: List<Message>) {
+    suspend fun restoreMessages(student: Student, mailbox: Mailbox?, messages: List<Message>) {
+        wulkanowySdkFactory.create(student)
+            .restoreMessages(messages = messages.map { it.messageGlobalKey })
+
+        refreshFolders(student, mailbox)
+    }
+
+    suspend fun deleteMessage(student: Student, message: Message) {
+        deleteMessages(student, listOf(message))
+    }
+
+    suspend fun deleteMessages(student: Student, messages: List<Message>) {
         val firstMessage = messages.first()
-        sdk.init(student).deleteMessages(
+        wulkanowySdkFactory.create(student)
-            messages = messages.map { it.messageGlobalKey },
+            .deleteMessages(
-            removeForever = firstMessage.folderId == TRASHED.id,
+                messages = messages.map { it.messageGlobalKey },
-        )
+                removeForever = firstMessage.folderId == TRASHED.id,
+            )
 
         if (firstMessage.folderId != TRASHED.id) {
             val deletedMessages = messages.map {
@@ -181,18 +206,24 @@ class MessageRepository @Inject constructor(
             }
 
             messagesDb.updateAll(deletedMessages)
-        } else messagesDb.deleteAll(messages)
+        } else {
-
+            messagesDb.deleteAll(messages)
-        getMessages(
+        }
-            student = student,
-            mailbox = mailbox,
-            folder = TRASHED,
-            forceRefresh = true,
-        ).first()
     }
 
-    suspend fun deleteMessage(student: Student, mailbox: Mailbox?, message: Message) {
+    private suspend fun refreshFolders(
-        deleteMessages(student, mailbox, listOf(message))
+        student: Student,
+        mailbox: Mailbox?,
+        folders: List<MessageFolder> = MessageFolder.entries
+    ) {
+        folders.forEach {
+            getMessages(
+                student = student,
+                mailbox = mailbox,
+                folder = it,
+                forceRefresh = true,
+            ).toFirstResult()
+        }
     }
 
     suspend fun getMailboxes(student: Student, forceRefresh: Boolean) = networkBoundResource(
@@ -206,7 +237,9 @@ class MessageRepository @Inject constructor(
         },
         query = { mailboxDao.loadAll(student.email, student.symbol, student.schoolSymbol) },
         fetch = {
-            sdk.init(student).getMailboxes().mapToEntities(student)
+            wulkanowySdkFactory.create(student)
+                .getMailboxes()
+                .mapToEntities(student)
         },
         saveFetchResult = { old, new ->
             mailboxDao.deleteAll(old uniqueSubtract new)
@@ -236,4 +269,18 @@ class MessageRepository @Inject constructor(
             context.getString(R.string.pref_key_message_draft),
             value?.let { json.encodeToString(it) }
         )
+
+    private suspend fun isMuted(author: String): Boolean {
+        return mutedMessageSendersDao.checkMute(author)
+    }
+
+    suspend fun muteMessage(author: String) {
+        if (isMuted(author)) return
+        mutedMessageSendersDao.insertMute(MutedMessageSender(author))
+    }
+
+    suspend fun unmuteMessage(author: String) {
+        if (!isMuted(author)) return
+        mutedMessageSendersDao.deleteMute(author)
+    }
 }

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

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.MobileDeviceDao
 import io.github.wulkanowy.data.db.entities.MobileDevice
 import io.github.wulkanowy.data.db.entities.Semester
@@ -8,11 +9,8 @@ import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.mappers.mapToMobileDeviceToken
 import io.github.wulkanowy.data.networkBoundResource
 import io.github.wulkanowy.data.pojos.MobileDeviceToken
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -21,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class MobileDeviceRepository @Inject constructor(
     private val mobileDb: MobileDeviceDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -42,30 +40,28 @@ class MobileDeviceRepository @Inject constructor(
         },
         query = { mobileDb.loadAll(student.userLoginId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getRegisteredDevices()
                 .mapToEntities(student)
         },
         saveFetchResult = { old, new ->
-            mobileDb.deleteAll(old uniqueSubtract new)
+            mobileDb.removeOldAndSaveNew(
-            mobileDb.insertAll(new uniqueSubtract old)
+                oldItems = old uniqueSubtract new,
-
+                newItems = new uniqueSubtract old,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, student))
         }
     )
 
     suspend fun unregisterDevice(student: Student, semester: Semester, device: MobileDevice) {
-        sdk.init(student)
+        wulkanowySdkFactory.create(student, semester)
-            .switchSemester(semester)
             .unregisterDevice(device.deviceId)
 
         mobileDb.deleteAll(listOf(device))
     }
 
     suspend fun getToken(student: Student, semester: Semester): MobileDeviceToken {
-        return sdk.init(student)
+        return wulkanowySdkFactory.create(student, semester)
-            .switchSemester(semester)
             .getToken()
             .mapToMobileDeviceToken()
     }

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

@@ -1,13 +1,16 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.NoteDao
 import io.github.wulkanowy.data.db.entities.Note
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.utils.AutoRefreshHelper
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.getRefreshKey
+import io.github.wulkanowy.utils.toLocalDate
+import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -16,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class NoteRepository @Inject constructor(
     private val noteDb: NoteDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -40,20 +43,21 @@ class NoteRepository @Inject constructor(
         },
         query = { noteDb.loadAll(student.studentId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getNotes()
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            noteDb.deleteAll(old uniqueSubtract new)
+            val notesToAdd = (new uniqueSubtract old).onEach {
-            noteDb.insertAll((new uniqueSubtract old).onEach {
                 if (it.date >= student.registrationDate.toLocalDate()) it.apply {
                     isRead = false
                     if (notify) isNotified = false
                 }
-            })
+            }
-
+            noteDb.removeOldAndSaveNew(
+                oldItems = old uniqueSubtract new,
+                newItems = notesToAdd,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester))
         }
     )

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

@@ -10,6 +10,7 @@ import com.fredporciuncula.flow.preferences.Serializer
 import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.enums.AppTheme
+import io.github.wulkanowy.data.enums.AttendanceCalculatorSortingMode
 import io.github.wulkanowy.data.enums.GradeColorTheme
 import io.github.wulkanowy.data.enums.GradeExpandMode
 import io.github.wulkanowy.data.enums.GradeSortingMode
@@ -41,6 +42,27 @@ class PreferencesRepository @Inject constructor(
             R.bool.pref_default_attendance_present
         )
 
+    val targetAttendanceFlow: Flow<Int>
+        get() = flowSharedPref.getInt(
+            context.getString(R.string.pref_key_attendance_target),
+            context.resources.getInteger(R.integer.pref_default_attendance_target)
+        ).asFlow()
+
+    val attendanceCalculatorSortingModeFlow: Flow<AttendanceCalculatorSortingMode>
+        get() = flowSharedPref.getString(
+            context.getString(R.string.pref_key_attendance_calculator_sorting_mode),
+            context.resources.getString(R.string.pref_default_attendance_calculator_sorting_mode)
+        ).asFlow().map(AttendanceCalculatorSortingMode::getByValue)
+
+    /**
+     * Subjects are empty when they don't have any attendances (total = 0, attendances = 0, absences = 0).
+     */
+    val attendanceCalculatorShowEmptySubjects: Flow<Boolean>
+        get() = flowSharedPref.getBoolean(
+            context.getString(R.string.pref_key_attendance_calculator_show_empty_subjects),
+            context.resources.getBoolean(R.bool.pref_default_attendance_calculator_show_empty_subjects)
+        ).asFlow()
+
     private val gradeAverageModePref: Preference<GradeAverageMode>
         get() = getObjectFlow(
             R.string.pref_key_grade_average_mode,

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

@@ -1,12 +1,15 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.RecipientDao
-import io.github.wulkanowy.data.db.entities.*
+import io.github.wulkanowy.data.db.entities.Mailbox
+import io.github.wulkanowy.data.db.entities.MailboxType
+import io.github.wulkanowy.data.db.entities.Message
+import io.github.wulkanowy.data.db.entities.Recipient
+import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.uniqueSubtract
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -14,19 +17,22 @@ import javax.inject.Singleton
 @Singleton
 class RecipientRepository @Inject constructor(
     private val recipientDb: RecipientDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
     private val cacheKey = "recipient"
 
     suspend fun refreshRecipients(student: Student, mailbox: Mailbox, type: MailboxType) {
-        val new = sdk.init(student).getRecipients(mailbox.globalKey)
+        val new = wulkanowySdkFactory.create(student)
+            .getRecipients(mailbox.globalKey)
             .mapToEntities(mailbox.globalKey)
         val old = recipientDb.loadAll(type, mailbox.globalKey)
 
-        recipientDb.deleteAll(old uniqueSubtract new)
+        recipientDb.removeOldAndSaveNew(
-        recipientDb.insertAll(new uniqueSubtract old)
+            oldItems = old uniqueSubtract new,
+            newItems = new uniqueSubtract old,
+        )
 
         refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, student))
     }
@@ -54,7 +60,7 @@ class RecipientRepository @Inject constructor(
     ): List<Recipient> {
         mailbox ?: return emptyList()
 
-        return sdk.init(student)
+        return wulkanowySdkFactory.create(student)
             .getMessageReplayDetails(message.messageGlobalKey)
             .sender
             .let(::listOf)

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

@@ -1,17 +1,23 @@
 package io.github.wulkanowy.data.repositories
 
-import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-class RecoverRepository @Inject constructor(private val sdk: Sdk) {
+class RecoverRepository @Inject constructor(
+    private val wulkanowySdkFactory: WulkanowySdkFactory
+) {
 
-    suspend fun getReCaptchaSiteKey(host: String, symbol: String): Pair<String, String> {
+    suspend fun getReCaptchaSiteKey(host: String, symbol: String): Pair<String, String> =
-        return sdk.getPasswordResetCaptchaCode(host, symbol)
+        wulkanowySdkFactory.create()
-    }
+            .getPasswordResetCaptchaCode(host, symbol)
 
     suspend fun sendRecoverRequest(
-        url: String, symbol: String, email: String, reCaptchaResponse: String
+        url: String,
-    ): String = sdk.sendPasswordResetRequest(url, symbol, email, reCaptchaResponse)
+        symbol: String,
+        email: String,
+        reCaptchaResponse: String
+    ): String = wulkanowySdkFactory.create()
+        .sendPasswordResetRequest(url, symbol, email, reCaptchaResponse)
 }

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

@@ -1,14 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SchoolAnnouncementDao
 import io.github.wulkanowy.data.db.entities.SchoolAnnouncement
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -18,7 +17,7 @@ import javax.inject.Singleton
 @Singleton
 class SchoolAnnouncementRepository @Inject constructor(
     private val schoolAnnouncementDb: SchoolAnnouncementDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -41,17 +40,18 @@ class SchoolAnnouncementRepository @Inject constructor(
             schoolAnnouncementDb.loadAll(student.userLoginId)
         },
         fetch = {
-            sdk.init(student)
+            val sdk = wulkanowySdkFactory.create(student)
-                .getDirectorInformation()
+            val lastAnnouncements = sdk.getLastAnnouncements().mapToEntities(student)
-                .mapToEntities(student)
+            val directorInformation = sdk.getDirectorInformation().mapToEntities(student)
+            lastAnnouncements + directorInformation
         },
         saveFetchResult = { old, new ->
-            val schoolAnnouncementsToSave = (new uniqueSubtract old).onEach {
+            schoolAnnouncementDb.removeOldAndSaveNew(
-                if (notify) it.isNotified = false
+                oldItems = old uniqueSubtract new,
-            }
+                newItems = (new uniqueSubtract old).onEach {
-
+                    if (notify) it.isNotified = false
-            schoolAnnouncementDb.deleteAll(old uniqueSubtract new)
+                },
-            schoolAnnouncementDb.insertAll(schoolAnnouncementsToSave)
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, student))
         }
     )

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

@@ -1,15 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SchoolDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntity
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -17,7 +15,7 @@ import javax.inject.Singleton
 @Singleton
 class SchoolRepository @Inject constructor(
     private val schoolDb: SchoolDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -40,17 +38,16 @@ class SchoolRepository @Inject constructor(
         },
         query = { schoolDb.load(semester.studentId, semester.classId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getSchool()
                 .mapToEntity(semester)
         },
         saveFetchResult = { old, new ->
             if (old != null && new != old) {
-                with(schoolDb) {
+                schoolDb.removeOldAndSaveNew(
-                    deleteAll(listOf(old))
+                    oldItems = listOf(old),
-                    insertAll(listOf(new))
+                    newItems = listOf(new)
-                }
+                )
             } else if (old == null) {
                 schoolDb.insertAll(listOf(new))
             }

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

@@ -1,17 +1,15 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.api.SchoolsService
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.StudentWithSemesters
 import io.github.wulkanowy.data.pojos.IntegrityRequest
 import io.github.wulkanowy.data.pojos.LoginEvent
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.ui.modules.login.LoginData
 import io.github.wulkanowy.utils.IntegrityHelper
 import io.github.wulkanowy.utils.getCurrentOrLast
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.withTimeout
 import timber.log.Timber
 import java.util.UUID
@@ -23,7 +21,7 @@ import kotlin.time.Duration.Companion.seconds
 class SchoolsRepository @Inject constructor(
     private val integrityHelper: IntegrityHelper,
     private val schoolsService: SchoolsService,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     suspend fun logSchoolLogin(loginData: LoginData, students: List<StudentWithSemesters>) {
@@ -40,10 +38,9 @@ class SchoolsRepository @Inject constructor(
     private suspend fun logLogin(loginData: LoginData, student: Student, semester: Semester) {
         val requestId = UUID.randomUUID().toString()
         val token = integrityHelper.getIntegrityToken(requestId) ?: return
+        val updatedStudent = student.copy(password = loginData.password)
 
-        val schoolInfo = sdk
+        val schoolInfo = wulkanowySdkFactory.create(updatedStudent, semester)
-            .init(student.copy(password = loginData.password))
-            .switchSemester(semester)
             .getSchool()
 
         schoolsService.logLoginEvent(

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

@@ -1,11 +1,15 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SemesterDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.sdk.Sdk
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.DispatchersProvider
+import io.github.wulkanowy.utils.getCurrentOrLast
+import io.github.wulkanowy.utils.isCurrent
+import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.withContext
 import timber.log.Timber
 import javax.inject.Inject
@@ -14,8 +18,8 @@ import javax.inject.Singleton
 @Singleton
 class SemesterRepository @Inject constructor(
     private val semesterDb: SemesterDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
-    private val dispatchers: DispatchersProvider
+    private val dispatchers: DispatchersProvider,
 ) {
 
     suspend fun getSemesters(
@@ -45,6 +49,7 @@ class SemesterRepository @Inject constructor(
                     0 == it.diaryId && 0 == it.kindergartenDiaryId
                 } == true
             }
+
             else -> false
         }
 
@@ -55,12 +60,17 @@ class SemesterRepository @Inject constructor(
     }
 
     private suspend fun refreshSemesters(student: Student) {
-        val new = sdk.init(student).getSemesters().mapToEntities(student.studentId)
+        val new = wulkanowySdkFactory.create(student)
+            .getSemesters()
+            .mapToEntities(student.studentId)
+
         if (new.isEmpty()) return Timber.i("Empty semester list!")
 
         val old = semesterDb.loadAll(student.studentId, student.classId)
-        semesterDb.deleteAll(old.uniqueSubtract(new))
+        semesterDb.removeOldAndSaveNew(
-        semesterDb.insertSemesters(new.uniqueSubtract(old))
+            oldItems = old uniqueSubtract new,
+            newItems = new uniqueSubtract old,
+        )
     }
 
     suspend fun getCurrentSemester(student: Student, forceRefresh: Boolean = false) =

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

@@ -1,13 +1,11 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.StudentInfoDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntity
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -15,7 +13,7 @@ import javax.inject.Singleton
 @Singleton
 class StudentInfoRepository @Inject constructor(
     private val studentInfoDao: StudentInfoDao,
-    private val sdk: Sdk
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     private val saveFetchResultMutex = Mutex()
@@ -30,16 +28,16 @@ class StudentInfoRepository @Inject constructor(
         shouldFetch = { it == null || forceRefresh },
         query = { studentInfoDao.loadStudentInfo(student.studentId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
+                .getStudentInfo()
-                .getStudentInfo().mapToEntity(semester)
+                .mapToEntity(semester)
         },
         saveFetchResult = { old, new ->
             if (old != null && new != old) {
-                with(studentInfoDao) {
+                studentInfoDao.removeOldAndSaveNew(
-                    deleteAll(listOf(old))
+                    oldItems = listOf(old),
-                    insertAll(listOf(new))
+                    newItems = listOf(new),
-                }
+                )
             } else if (old == null) {
                 studentInfoDao.insertAll(listOf(new))
             }

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

@@ -1,6 +1,7 @@
 package io.github.wulkanowy.data.repositories
 
 import androidx.room.withTransaction
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.dao.SemesterDao
 import io.github.wulkanowy.data.db.dao.StudentDao
@@ -14,9 +15,7 @@ import io.github.wulkanowy.data.mappers.mapToPojo
 import io.github.wulkanowy.data.pojos.RegisterUser
 import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.DispatchersProvider
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.security.Scrambler
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.withContext
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -26,7 +25,7 @@ class StudentRepository @Inject constructor(
     private val dispatchers: DispatchersProvider,
     private val studentDb: StudentDao,
     private val semesterDb: SemesterDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val appDatabase: AppDatabase,
     private val scrambler: Scrambler,
 ) {
@@ -37,7 +36,7 @@ class StudentRepository @Inject constructor(
         pin: String,
         symbol: String,
         token: String
-    ): RegisterUser = sdk
+    ): RegisterUser = wulkanowySdkFactory.create()
         .getStudentsFromHebe(token, pin, symbol, "")
         .mapToPojo(null)
 
@@ -47,7 +46,7 @@ class StudentRepository @Inject constructor(
         scrapperBaseUrl: String,
         domainSuffix: String,
         symbol: String
-    ): RegisterUser = sdk
+    ): RegisterUser = wulkanowySdkFactory.create()
         .getUserSubjectsFromScrapper(email, password, scrapperBaseUrl, domainSuffix, symbol)
         .mapToPojo(password)
 
@@ -56,7 +55,7 @@ class StudentRepository @Inject constructor(
         password: String,
         scrapperBaseUrl: String,
         symbol: String
-    ): RegisterUser = sdk
+    ): RegisterUser = wulkanowySdkFactory.create()
         .getStudentsHybrid(email, password, scrapperBaseUrl, "", symbol)
         .mapToPojo(password)
 
@@ -149,13 +148,11 @@ class StudentRepository @Inject constructor(
         .distinctBy { it.student.studentName }.size == 1
 
     suspend fun authorizePermission(student: Student, semester: Semester, pesel: String) =
-        sdk.init(student)
+        wulkanowySdkFactory.create(student, semester)
-            .switchSemester(semester)
             .authorizePermission(pesel)
 
     suspend fun refreshStudentName(student: Student, semester: Semester) {
-        val newCurrentApiStudent = sdk.init(student)
+        val newCurrentApiStudent = wulkanowySdkFactory.create(student, semester)
-            .switchSemester(semester)
             .getCurrentStudent() ?: return
 
         val studentName = StudentName(

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

@@ -1,15 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SubjectDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -18,7 +16,7 @@ import javax.inject.Singleton
 @Singleton
 class SubjectRepository @Inject constructor(
     private val subjectDao: SubjectDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -39,15 +37,15 @@ class SubjectRepository @Inject constructor(
         },
         query = { subjectDao.loadAll(semester.diaryId, semester.studentId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getSubjects()
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            subjectDao.deleteAll(old uniqueSubtract new)
+            subjectDao.removeOldAndSaveNew(
-            subjectDao.insertAll(new uniqueSubtract old)
+                oldItems = old uniqueSubtract new,
-
+                newItems = new uniqueSubtract old
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester))
         }
     )

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

@@ -1,15 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.TeacherDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -18,7 +16,7 @@ import javax.inject.Singleton
 @Singleton
 class TeacherRepository @Inject constructor(
     private val teacherDb: TeacherDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -39,15 +37,15 @@ class TeacherRepository @Inject constructor(
         },
         query = { teacherDb.loadAll(semester.studentId, semester.classId) },
         fetch = {
-            sdk.init(student)
+            wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getTeachers()
                 .mapToEntities(semester)
         },
         saveFetchResult = { old, new ->
-            teacherDb.deleteAll(old uniqueSubtract new)
+            teacherDb.removeOldAndSaveNew(
-            teacherDb.insertAll(new uniqueSubtract old)
+                oldItems = old uniqueSubtract new,
-
+                newItems = new uniqueSubtract old,
+            )
             refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester))
         }
     )

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

@@ -1,15 +1,23 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 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.*
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.data.db.entities.Timetable
+import io.github.wulkanowy.data.db.entities.TimetableAdditional
+import io.github.wulkanowy.data.db.entities.TimetableHeader
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
 import io.github.wulkanowy.data.pojos.TimetableFull
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.services.alarm.TimetableNotificationSchedulerHelper
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.AutoRefreshHelper
+import io.github.wulkanowy.utils.getRefreshKey
+import io.github.wulkanowy.utils.monday
+import io.github.wulkanowy.utils.sunday
+import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.combine
 import kotlinx.coroutines.sync.Mutex
@@ -23,7 +31,7 @@ class TimetableRepository @Inject constructor(
     private val timetableDb: TimetableDao,
     private val timetableAdditionalDb: TimetableAdditionalDao,
     private val timetableHeaderDb: TimetableHeaderDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val schedulerHelper: TimetableNotificationSchedulerHelper,
     private val refreshHelper: AutoRefreshHelper,
 ) {
@@ -64,8 +72,7 @@ class TimetableRepository @Inject constructor(
         },
         query = { getFullTimetableFromDatabase(student, semester, start, end) },
         fetch = {
-            val timetableFull = sdk.init(student)
+            val timetableFull = wulkanowySdkFactory.create(student, semester)
-                .switchSemester(semester)
                 .getTimetable(start.monday, end.sunday)
 
             timetableFull.mapToEntities(semester)
@@ -121,12 +128,12 @@ class TimetableRepository @Inject constructor(
         }
     }
 
-    fun getTimetableFromDatabase(
+    suspend fun getTimetableFromDatabase(
         semester: Semester,
-        from: LocalDate,
+        start: LocalDate,
         end: LocalDate
-    ): Flow<List<Timetable>> {
+    ): List<Timetable> {
-        return timetableDb.loadAll(semester.diaryId, semester.studentId, from, end)
+        return timetableDb.load(semester.diaryId, semester.studentId, start, end)
     }
 
     suspend fun updateTimetable(timetable: List<Timetable>) {
@@ -144,8 +151,10 @@ class TimetableRepository @Inject constructor(
             new.apply { if (notify) isNotified = false }
         }
 
-        timetableDb.deleteAll(lessonsToRemove)
+        timetableDb.removeOldAndSaveNew(
-        timetableDb.insertAll(lessonsToAdd)
+            oldItems = lessonsToRemove,
+            newItems = lessonsToAdd,
+        )
 
         schedulerHelper.cancelScheduled(lessonsToRemove, student)
         schedulerHelper.scheduleNotifications(lessonsToAdd, student)
@@ -156,13 +165,17 @@ class TimetableRepository @Inject constructor(
         new: List<TimetableAdditional>
     ) {
         val oldFiltered = old.filter { !it.isAddedByUser }
-        timetableAdditionalDb.deleteAll(oldFiltered uniqueSubtract new)
+        timetableAdditionalDb.removeOldAndSaveNew(
-        timetableAdditionalDb.insertAll(new uniqueSubtract old)
+            oldItems = oldFiltered uniqueSubtract new,
+            newItems = new uniqueSubtract old,
+        )
     }
 
     private suspend fun refreshDayHeaders(old: List<TimetableHeader>, new: List<TimetableHeader>) {
-        timetableHeaderDb.deleteAll(old uniqueSubtract new)
+        timetableHeaderDb.removeOldAndSaveNew(
-        timetableHeaderDb.insertAll(new uniqueSubtract old)
+            oldItems = old uniqueSubtract new,
+            newItems = new uniqueSubtract old,
+        )
     }
 
     fun getLastRefreshTimestamp(semester: Semester, start: LocalDate, end: LocalDate): Instant {

app/src/main/java/io/github/wulkanowy/domain/attendance/GetAttendanceCalculatorDataUseCase.kt

@@ -0,0 +1,106 @@
+package io.github.wulkanowy.domain.attendance
+
+import io.github.wulkanowy.data.*
+import io.github.wulkanowy.data.db.entities.AttendanceSummary
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.data.db.entities.Subject
+import io.github.wulkanowy.data.enums.AttendanceCalculatorSortingMode
+import io.github.wulkanowy.data.enums.AttendanceCalculatorSortingMode.*
+import io.github.wulkanowy.data.pojos.AttendanceData
+import io.github.wulkanowy.data.repositories.AttendanceSummaryRepository
+import io.github.wulkanowy.data.repositories.PreferencesRepository
+import io.github.wulkanowy.data.repositories.SubjectRepository
+import io.github.wulkanowy.utils.allAbsences
+import io.github.wulkanowy.utils.allPresences
+import kotlinx.coroutines.flow.Flow
+import javax.inject.Inject
+import kotlin.math.ceil
+import kotlin.math.floor
+
+class GetAttendanceCalculatorDataUseCase @Inject constructor(
+    private val subjectRepository: SubjectRepository,
+    private val attendanceSummaryRepository: AttendanceSummaryRepository,
+    private val preferencesRepository: PreferencesRepository,
+) {
+
+    operator fun invoke(
+        student: Student,
+        semester: Semester,
+        forceRefresh: Boolean,
+    ): Flow<Resource<List<AttendanceData>>> =
+        subjectRepository.getSubjects(student, semester, forceRefresh)
+            .mapResourceData { subjects -> subjects.sortedBy(Subject::name) }
+            .combineWithResourceData(preferencesRepository.targetAttendanceFlow, ::Pair)
+            .flatMapResourceData { (subjects, targetFreq) ->
+                combineResourceFlows(subjects.map { subject ->
+                    attendanceSummaryRepository.getAttendanceSummary(
+                        student = student,
+                        semester = semester,
+                        subjectId = subject.realId,
+                        forceRefresh = forceRefresh
+                    ).mapResourceData { summaries ->
+                        summaries.toAttendanceData(subject.name, targetFreq)
+                    }
+                })
+                    // Every individual combined flow causes separate network requests to update data.
+                    // When there is N child flows, they can cause up to N-1 items to be emitted. Since all
+                    // requests are usually completed in less than 5s, there is no need to emit multiple
+                    // intermediates that will be visible for barely any time.
+                    .debounceIntermediates()
+            }
+            .combineWithResourceData(preferencesRepository.attendanceCalculatorShowEmptySubjects) { attendanceDataList, showEmptySubjects ->
+                attendanceDataList.filter { it.total != 0 || showEmptySubjects }
+            }
+            .combineWithResourceData(preferencesRepository.attendanceCalculatorSortingModeFlow, List<AttendanceData>::sortedBy)
+}
+
+private fun List<AttendanceSummary>.toAttendanceData(subjectName: String, targetFreq: Int): AttendanceData {
+    val presences = sumOf { it.allPresences }
+    val absences = sumOf { it.allAbsences }
+    return AttendanceData(
+        subjectName = subjectName,
+        lessonBalance = calcLessonBalance(
+            targetFreq.toDouble() / 100, presences, absences
+        ),
+        presences = presences,
+        absences = absences,
+    )
+}
+
+private fun calcLessonBalance(targetFreq: Double, presences: Int, absences: Int): Int {
+    val total = presences + absences
+    // The `+ 1` is to avoid false positives in close cases. Eg.:
+    // target frequency 99%, 1 presence. Without the `+ 1` this would be reported shown as
+    // a positive balance of +1, however that is not actually true as skipping one class
+    // would make it so that the balance would actually be negative (-98). The `+ 1`
+    // fixes this and makes sure that in situations like these, it's not reporting incorrect
+    // balances
+    return when {
+        presences / (total + 1f) >= targetFreq -> calcMissingAbsences(
+            targetFreq, absences, presences
+        )
+        presences / (total + 0f) < targetFreq -> -calcMissingPresences(
+            targetFreq, absences, presences
+        )
+        else -> 0
+    }
+}
+
+private fun calcMissingPresences(targetFreq: Double, absences: Int, presences: Int) =
+    calcMinRequiredPresencesFor(targetFreq, absences) - presences
+
+private fun calcMinRequiredPresencesFor(targetFreq: Double, absences: Int) =
+    ceil((targetFreq / (1 - targetFreq)) * absences).toInt()
+
+private fun calcMissingAbsences(targetFreq: Double, absences: Int, presences: Int) =
+    calcMinRequiredAbsencesFor(targetFreq, presences) - absences
+
+private fun calcMinRequiredAbsencesFor(targetFreq: Double, presences: Int) =
+    floor((presences * (1 - targetFreq)) / targetFreq).toInt()
+
+private fun List<AttendanceData>.sortedBy(mode: AttendanceCalculatorSortingMode) = when (mode) {
+    ALPHABETIC -> sortedBy(AttendanceData::subjectName)
+    ATTENDANCE -> sortedByDescending(AttendanceData::presencePercentage)
+    LESSON_BALANCE -> sortedBy(AttendanceData::lessonBalance)
+}

app/src/main/java/io/github/wulkanowy/domain/timetable/IsStudentHasLessonsOnWeekendUseCase.kt

@@ -1,10 +1,7 @@
 package io.github.wulkanowy.domain.timetable
 
-import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.repositories.TimetableRepository
-import io.github.wulkanowy.data.toFirstResult
 import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.sunday
 import java.time.LocalDate
@@ -16,18 +13,14 @@ class IsStudentHasLessonsOnWeekendUseCase @Inject constructor(
 ) {
 
     suspend operator fun invoke(
-        student: Student,
         semester: Semester,
         currentDate: LocalDate = LocalDate.now(),
     ): Boolean {
-        val lessons = timetableRepository.getTimetable(
+        val lessons = timetableRepository.getTimetableFromDatabase(
-            student = student,
             semester = semester,
             start = currentDate.monday,
             end = currentDate.sunday,
-            forceRefresh = false,
+        )
-            timetableType = TimetableRepository.TimetableType.NORMAL
-        ).toFirstResult().dataOrNull?.lessons.orEmpty()
         return isWeekendHasLessonsUseCase(lessons)
     }
 }

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

@@ -6,7 +6,6 @@ import io.github.wulkanowy.data.repositories.TimetableRepository
 import io.github.wulkanowy.data.waitForResult
 import io.github.wulkanowy.services.sync.notifications.ChangeTimetableNotification
 import io.github.wulkanowy.utils.nextOrSameSchoolDay
-import kotlinx.coroutines.flow.first
 import java.time.LocalDate.now
 import javax.inject.Inject
 
@@ -31,10 +30,9 @@ class TimetableWork @Inject constructor(
 
         timetableRepository.getTimetableFromDatabase(
             semester = semester,
-            from = startDate,
+            start = startDate,
             end = endDate,
         )
-            .first()
             .filterNot { it.isNotified }
             .let {
                 if (it.isNotEmpty()) changeTimetableNotification.notify(it, student)

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

@@ -1,6 +1,7 @@
 package io.github.wulkanowy.ui.base
 
 import android.app.ActivityManager
+import android.os.Build
 import android.os.Bundle
 import android.view.View
 import android.widget.Toast
@@ -17,6 +18,8 @@ import io.github.wulkanowy.utils.FragmentLifecycleLogger
 import io.github.wulkanowy.utils.getThemeAttrColor
 import io.github.wulkanowy.utils.lifecycleAwareVariable
 import io.github.wulkanowy.utils.openInternetBrowser
+import timber.log.Timber
+import java.time.Instant
 import javax.inject.Inject
 
 abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
@@ -36,16 +39,26 @@ abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
 
     abstract var presenter: T
 
+    private var lastDialogOpenTime = mutableMapOf<String, Instant>()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         inject()
         themeManager.applyActivityTheme(this)
         super.onCreate(savedInstanceState)
         supportFragmentManager.registerFragmentLifecycleCallbacks(fragmentLifecycleLogger, true)
+        applyCustomTaskDescription()
+    }
 
-        @Suppress("DEPRECATION")
+    @Suppress("DEPRECATION")
-        setTaskDescription(
+    private fun applyCustomTaskDescription() {
-            ActivityManager.TaskDescription(null, null, getThemeAttrColor(R.attr.colorSurface))
+        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.R) return
-        )
+        try {
+            val newColor = getThemeAttrColor(R.attr.colorSurface)
+            val taskDescription = ActivityManager.TaskDescription(null, null, newColor)
+            setTaskDescription(taskDescription)
+        } catch (e: Exception) {
+            Timber.e(e)
+        }
     }
 
     override fun showError(text: String, error: Throwable) {
@@ -70,6 +83,8 @@ abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
     }
 
     override fun showExpiredCredentialsDialog() {
+        if (!shouldShowDialog(DIALOG_ERROR_BAD_CREDENTIALS)) return
+
         MaterialAlertDialogBuilder(this)
             .setTitle(R.string.main_expired_credentials_title)
             .setMessage(R.string.main_expired_credentials_description)
@@ -83,6 +98,8 @@ abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
     }
 
     override fun showDecryptionFailedDialog() {
+        if (!shouldShowDialog(DIALOG_ERROR_DECRYPTION_FAILED)) return
+
         MaterialAlertDialogBuilder(this)
             .setTitle(R.string.main_session_expired)
             .setMessage(R.string.main_session_relogin)
@@ -119,4 +136,21 @@ abstract class BaseActivity<T : BasePresenter<out BaseView>, VB : ViewBinding> :
     protected open fun inject() {
         throw UnsupportedOperationException()
     }
+
+    private fun shouldShowDialog(name: String): Boolean {
+        val lastOpenTime = lastDialogOpenTime[name]
+        val now = Instant.now()
+
+        if (lastOpenTime != null && now.isBefore(lastOpenTime.plusSeconds(1))) {
+            Timber.i("Dialog $name was shown less than a second ago. Skip")
+            return false
+        }
+        lastDialogOpenTime[name] = Instant.now()
+        return true
+    }
+
+    companion object {
+        private const val DIALOG_ERROR_BAD_CREDENTIALS = "dialog_error_bad_credentials"
+        private const val DIALOG_ERROR_DECRYPTION_FAILED = "dialog_error_decryption_failed"
+    }
 }

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

@@ -34,7 +34,7 @@ open class ErrorHandler @Inject constructor(@ApplicationContext protected val co
     }
 
     protected open fun proceed(error: Throwable) {
-        showErrorMessage(context.resources.getErrorString(error), error)
+        showDefaultMessage(error)
         when (error) {
             is PasswordChangeRequiredException -> onPasswordChangeRequired(error.redirectUrl)
             is ScramblerException -> onDecryptionFailed()
@@ -45,6 +45,10 @@ open class ErrorHandler @Inject constructor(@ApplicationContext protected val co
         }
     }
 
+    fun showDefaultMessage(error: Throwable) {
+        showErrorMessage(context.resources.getErrorString(error), error)
+    }
+
     open fun clear() {
         showErrorMessage = { _, _ -> }
         onExpiredCredentials = {}

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

@@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.attendance
 
+import android.content.res.ColorStateList
 import android.graphics.Typeface
 import android.view.LayoutInflater
 import android.view.View
@@ -33,17 +34,17 @@ class AttendanceAdapter @Inject constructor() :
     )
 
     override fun onBindViewHolder(holder: ItemViewHolder, position: Int) {
+        val context = holder.binding.root.context
         val item = items[position]
 
         with(holder.binding) {
             attendanceItemNumber.text = item.number.toString()
-            attendanceItemSubject.text = item.subject.ifBlank {
+            attendanceItemSubject.text = item.subject
-                root.context.getString(R.string.all_no_data)
+                .ifBlank { context.getString(R.string.all_no_data) }
-            }
             attendanceItemDescription.setText(item.descriptionRes)
 
             attendanceItemDescription.setTextColor(
-                root.context.getThemeAttrColor(
+                context.getThemeAttrColor(
                     when {
                         item.absence && !item.excused -> R.attr.colorAttendanceAbsence
                         item.lateness && !item.excused -> R.attr.colorAttendanceLateness
@@ -61,13 +62,15 @@ class AttendanceAdapter @Inject constructor() :
             attendanceItemAlert.isVisible =
                 item.let { (it.absence && !it.excused) || (it.lateness && !it.excused) }
 
-            attendanceItemAlert.setColorFilter(root.context.getThemeAttrColor(
+            attendanceItemAlert.imageTintList = ColorStateList.valueOf(
-                when{
+                context.getThemeAttrColor(
-                    item.absence && !item.excused -> R.attr.colorAttendanceAbsence
+                    when {
-                    item.lateness && !item.excused -> R.attr.colorAttendanceLateness
+                        item.absence && !item.excused -> R.attr.colorAttendanceAbsence
-                    else -> android.R.attr.colorPrimary
+                        item.lateness && !item.excused -> R.attr.colorAttendanceLateness
-                }
+                        else -> android.R.attr.colorPrimary
-            ))
+                    }
+                )
+            )
             attendanceItemNumber.visibility = View.GONE
             attendanceItemExcuseInfo.visibility = View.GONE
             attendanceItemExcuseCheckbox.visibility = View.GONE

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

@@ -14,6 +14,7 @@ import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.databinding.DialogExcuseBinding
 import io.github.wulkanowy.databinding.FragmentAttendanceBinding
 import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.attendance.calculator.AttendanceCalculatorFragment
 import io.github.wulkanowy.ui.modules.attendance.summary.AttendanceSummaryFragment
 import io.github.wulkanowy.ui.modules.main.MainActivity
 import io.github.wulkanowy.ui.modules.main.MainView
@@ -134,6 +135,7 @@ class AttendanceFragment : BaseFragment<FragmentAttendanceBinding>(R.layout.frag
 
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         return if (item.itemId == R.id.attendanceMenuSummary) presenter.onSummarySwitchSelected()
+        else if (item.itemId == R.id.attendanceMenuCalculator) presenter.onCalculatorSwitchSelected()
         else false
     }
 
@@ -253,6 +255,10 @@ class AttendanceFragment : BaseFragment<FragmentAttendanceBinding>(R.layout.frag
         (activity as? MainActivity)?.pushView(AttendanceSummaryFragment.newInstance())
     }
 
+    override fun openCalculatorView() {
+        (activity as? MainActivity)?.pushView(AttendanceCalculatorFragment.newInstance())
+    }
+
     override fun startActionMode() {
         actionMode = (activity as MainActivity?)?.startSupportActionMode(actionModeCallback)
     }

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

@@ -1,21 +1,37 @@
 package io.github.wulkanowy.ui.modules.attendance
 
 import android.annotation.SuppressLint
-import io.github.wulkanowy.data.*
+import io.github.wulkanowy.data.Resource
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.data.flatResourceFlow
-import io.github.wulkanowy.data.db.entities.Timetable
+import io.github.wulkanowy.data.logResourceStatus
+import io.github.wulkanowy.data.mapResourceData
+import io.github.wulkanowy.data.onResourceData
+import io.github.wulkanowy.data.onResourceError
+import io.github.wulkanowy.data.onResourceIntermediate
+import io.github.wulkanowy.data.onResourceLoading
+import io.github.wulkanowy.data.onResourceNotLoading
+import io.github.wulkanowy.data.onResourceSuccess
 import io.github.wulkanowy.data.repositories.AttendanceRepository
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.data.repositories.SemesterRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
-import io.github.wulkanowy.data.repositories.TimetableRepository
+import io.github.wulkanowy.data.resourceFlow
 import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.AnalyticsHelper
-import kotlinx.coroutines.flow.catch
+import io.github.wulkanowy.utils.capitalise
-import kotlinx.coroutines.flow.flow
+import io.github.wulkanowy.utils.getLastSchoolDayIfHoliday
+import io.github.wulkanowy.utils.isExcusableOrNotExcused
+import io.github.wulkanowy.utils.isHolidays
+import io.github.wulkanowy.utils.monday
+import io.github.wulkanowy.utils.nextSchoolDay
+import io.github.wulkanowy.utils.previousOrSameSchoolDay
+import io.github.wulkanowy.utils.previousSchoolDay
+import io.github.wulkanowy.utils.sunday
+import io.github.wulkanowy.utils.toFormattedString
+import kotlinx.coroutines.flow.firstOrNull
 import kotlinx.coroutines.flow.onEach
 import timber.log.Timber
 import java.time.DayOfWeek
@@ -199,6 +215,11 @@ class AttendancePresenter @Inject constructor(
         return true
     }
 
+    fun onCalculatorSwitchSelected(): Boolean {
+        view?.openCalculatorView()
+        return true
+    }
+
     private fun loadData(forceRefresh: Boolean = false) {
         Timber.i("Loading attendance data started")
 
@@ -210,7 +231,7 @@ class AttendancePresenter @Inject constructor(
 
             val semester = semesterRepository.getCurrentSemester(student)
 
-            checkInitialAndCurrentDate(student, semester)
+            checkInitialAndCurrentDate(semester)
             attendanceRepository.getAttendance(
                 student = student,
                 semester = semester,
@@ -266,15 +287,13 @@ class AttendancePresenter @Inject constructor(
             .launch()
     }
 
-    private suspend fun checkInitialAndCurrentDate(student: Student, semester: Semester) {
+    private suspend fun checkInitialAndCurrentDate(semester: Semester) {
         if (initialDate == null) {
-            val lessons = attendanceRepository.getAttendance(
+            val lessons = attendanceRepository.getAttendanceFromDatabase(
-                student = student,
                 semester = semester,
                 start = now().monday,
                 end = now().sunday,
-                forceRefresh = false,
+            ).firstOrNull().orEmpty()
-            ).toFirstResult().dataOrNull.orEmpty()
             isWeekendHasLessons = isWeekendHasLessons(lessons)
             initialDate = getInitialDate(semester)
         }
@@ -316,6 +335,7 @@ class AttendancePresenter @Inject constructor(
                     showContent(false)
                     showExcuseButton(false)
                 }
+
                 is Resource.Success -> {
                     Timber.i("Excusing for absence result: Success")
                     analytics.logEvent("excuse_absence", "items" to attendanceToExcuseList.size)
@@ -328,6 +348,7 @@ class AttendancePresenter @Inject constructor(
                     }
                     loadData(forceRefresh = true)
                 }
+
                 is Resource.Error -> {
                     Timber.i("Excusing for absence result: An exception occurred")
                     errorHandler.dispatch(it.error)

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

@@ -56,6 +56,8 @@ interface AttendanceView : BaseView {
 
     fun openSummaryView()
 
+    fun openCalculatorView()
+
     fun startSendMessageIntent(date: LocalDate, numbers: String, reason: String)
 
     fun startActionMode()

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

@@ -0,0 +1,67 @@
+package io.github.wulkanowy.ui.modules.attendance.calculator
+
+import android.view.LayoutInflater
+import android.view.ViewGroup
+import androidx.core.view.isVisible
+import androidx.recyclerview.widget.RecyclerView
+import io.github.wulkanowy.R
+import io.github.wulkanowy.data.pojos.AttendanceData
+import io.github.wulkanowy.databinding.ItemAttendanceCalculatorHeaderBinding
+import javax.inject.Inject
+import kotlin.math.abs
+import kotlin.math.roundToInt
+
+class AttendanceCalculatorAdapter @Inject constructor() :
+    RecyclerView.Adapter<AttendanceCalculatorAdapter.ViewHolder>() {
+
+    var items = emptyList<AttendanceData>()
+
+    override fun getItemCount() = items.size
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) = ViewHolder(
+        ItemAttendanceCalculatorHeaderBinding.inflate(
+            LayoutInflater.from(parent.context), parent, false
+        )
+    )
+
+    override fun onBindViewHolder(parent: ViewHolder, position: Int) {
+        val context = parent.binding.root.context
+        val item = items[position]
+
+        with(parent.binding) {
+            attendanceCalculatorPercentage.text = "${item.presencePercentage.roundToInt()}"
+
+            attendanceCalculatorSummaryBalance.text = when {
+                item.lessonBalance > 0 -> {
+                    context.getString(
+                        R.string.attendance_calculator_summary_balance_positive,
+                        item.lessonBalance
+                    )
+                }
+
+                item.lessonBalance < 0 -> {
+                    context.getString(
+                        R.string.attendance_calculator_summary_balance_negative,
+                        abs(item.lessonBalance)
+                    )
+                }
+
+                else -> context.getString(R.string.attendance_calculator_summary_balance_neutral)
+            }
+            attendanceCalculatorWarning.isVisible = item.lessonBalance < 0
+            attendanceCalculatorTitle.text = item.subjectName
+            attendanceCalculatorSummaryValues.text = if (item.total == 0) {
+                context.getString(R.string.attendance_calculator_summary_values_empty)
+            } else {
+                context.getString(
+                    R.string.attendance_calculator_summary_values,
+                    item.presences,
+                    item.total
+                )
+            }
+        }
+    }
+
+    class ViewHolder(val binding: ItemAttendanceCalculatorHeaderBinding) :
+        RecyclerView.ViewHolder(binding.root)
+}

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

@@ -0,0 +1,105 @@
+package io.github.wulkanowy.ui.modules.attendance.calculator
+
+import android.os.Bundle
+import android.view.View
+import androidx.core.view.isVisible
+import androidx.recyclerview.widget.LinearLayoutManager
+import dagger.hilt.android.AndroidEntryPoint
+import io.github.wulkanowy.R
+import io.github.wulkanowy.data.pojos.AttendanceData
+import io.github.wulkanowy.databinding.FragmentAttendanceCalculatorBinding
+import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.ui.widgets.DividerItemDecoration
+import io.github.wulkanowy.utils.getThemeAttrColor
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class AttendanceCalculatorFragment :
+    BaseFragment<FragmentAttendanceCalculatorBinding>(R.layout.fragment_attendance_calculator),
+    AttendanceCalculatorView, MainView.TitledView {
+
+    @Inject
+    lateinit var presenter: AttendanceCalculatorPresenter
+
+    @Inject
+    lateinit var attendanceCalculatorAdapter: AttendanceCalculatorAdapter
+
+    override val titleStringId get() = R.string.attendance_title
+
+    companion object {
+        fun newInstance() = AttendanceCalculatorFragment()
+    }
+
+    override val isViewEmpty get() = attendanceCalculatorAdapter.items.isEmpty()
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        binding = FragmentAttendanceCalculatorBinding.bind(view)
+        messageContainer = binding.attendanceCalculatorRecycler
+        presenter.onAttachView(this)
+    }
+
+    override fun initView() {
+        with(binding.attendanceCalculatorRecycler) {
+            layoutManager = LinearLayoutManager(context)
+            adapter = attendanceCalculatorAdapter
+            addItemDecoration(DividerItemDecoration(context))
+        }
+
+        with(binding) {
+            attendanceCalculatorSwipe.setOnRefreshListener(presenter::onSwipeRefresh)
+            attendanceCalculatorSwipe.setColorSchemeColors(requireContext().getThemeAttrColor(R.attr.colorPrimary))
+            attendanceCalculatorSwipe.setProgressBackgroundColorSchemeColor(requireContext().getThemeAttrColor(R.attr.colorSwipeRefresh))
+            attendanceCalculatorErrorRetry.setOnClickListener { presenter.onRetry() }
+            attendanceCalculatorErrorDetails.setOnClickListener { presenter.onDetailsClick() }
+        }
+    }
+
+    override fun updateData(data: List<AttendanceData>) {
+        with(attendanceCalculatorAdapter) {
+            items = data
+            notifyDataSetChanged()
+        }
+    }
+
+    override fun clearView() {
+        with(attendanceCalculatorAdapter) {
+            items = emptyList()
+            notifyDataSetChanged()
+        }
+    }
+
+    override fun showEmpty(show: Boolean) {
+        binding.attendanceCalculatorEmpty.isVisible = show
+    }
+
+    override fun showErrorView(show: Boolean) {
+        binding.attendanceCalculatorError.isVisible = show
+    }
+
+    override fun setErrorDetails(message: String) {
+        binding.attendanceCalculatorErrorMessage.text = message
+    }
+
+    override fun showProgress(show: Boolean) {
+        binding.attendanceCalculatorProgress.isVisible = show
+    }
+
+    override fun enableSwipe(enable: Boolean) {
+        binding.attendanceCalculatorSwipe.isEnabled = enable
+    }
+
+    override fun showContent(show: Boolean) {
+        binding.attendanceCalculatorRecycler.isVisible = show
+    }
+
+    override fun showRefresh(show: Boolean) {
+        binding.attendanceCalculatorSwipe.isRefreshing = show
+    }
+
+    override fun onDestroyView() {
+        presenter.onDetachView()
+        super.onDestroyView()
+    }
+}

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

@@ -0,0 +1,84 @@
+package io.github.wulkanowy.ui.modules.attendance.calculator
+
+import io.github.wulkanowy.data.*
+import io.github.wulkanowy.data.repositories.SemesterRepository
+import io.github.wulkanowy.data.repositories.StudentRepository
+import io.github.wulkanowy.domain.attendance.GetAttendanceCalculatorDataUseCase
+import io.github.wulkanowy.ui.base.BasePresenter
+import io.github.wulkanowy.ui.base.ErrorHandler
+import timber.log.Timber
+import javax.inject.Inject
+
+class AttendanceCalculatorPresenter @Inject constructor(
+    errorHandler: ErrorHandler,
+    studentRepository: StudentRepository,
+    private val semesterRepository: SemesterRepository,
+    private val getAttendanceCalculatorData: GetAttendanceCalculatorDataUseCase,
+) : BasePresenter<AttendanceCalculatorView>(errorHandler, studentRepository) {
+
+    private lateinit var lastError: Throwable
+
+    override fun onAttachView(view: AttendanceCalculatorView) {
+        super.onAttachView(view)
+        view.initView()
+        Timber.i("Attendance calculator view was initialized")
+        errorHandler.showErrorMessage = ::showErrorViewOnError
+        loadData()
+    }
+
+    fun onSwipeRefresh() {
+        Timber.i("Force refreshing the attendance calculator")
+        loadData(forceRefresh = true)
+    }
+
+    fun onRetry() {
+        view?.run {
+            showErrorView(false)
+            showProgress(true)
+        }
+        loadData()
+    }
+
+    fun onDetailsClick() {
+        view?.showErrorDetailsDialog(lastError)
+    }
+
+    private fun loadData(forceRefresh: Boolean = false) {
+        flatResourceFlow {
+            val student = studentRepository.getCurrentStudent()
+            val semester = semesterRepository.getCurrentSemester(student)
+            getAttendanceCalculatorData(student, semester, forceRefresh)
+        }
+            .logResourceStatus("load attendance calculator")
+            .onResourceData {
+                view?.run {
+                    showProgress(false)
+                    showErrorView(false)
+                    showContent(it.isNotEmpty())
+                    showEmpty(it.isEmpty())
+                    updateData(it)
+                }
+            }
+            .onResourceIntermediate { view?.showRefresh(true) }
+            .onResourceNotLoading {
+                view?.run {
+                    enableSwipe(true)
+                    showRefresh(false)
+                    showProgress(false)
+                }
+            }
+            .onResourceError(errorHandler::dispatch)
+            .launch()
+    }
+
+    private fun showErrorViewOnError(message: String, error: Throwable) {
+        view?.run {
+            if (isViewEmpty) {
+                lastError = error
+                setErrorDetails(message)
+                showErrorView(true)
+                showEmpty(false)
+            } else showError(message, error)
+        }
+    }
+}

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

@@ -0,0 +1,29 @@
+package io.github.wulkanowy.ui.modules.attendance.calculator
+
+import io.github.wulkanowy.data.pojos.AttendanceData
+import io.github.wulkanowy.ui.base.BaseView
+
+interface AttendanceCalculatorView : BaseView {
+
+    val isViewEmpty: Boolean
+
+    fun initView()
+
+    fun showRefresh(show: Boolean)
+
+    fun showContent(show: Boolean)
+
+    fun showProgress(show: Boolean)
+
+    fun enableSwipe(enable: Boolean)
+
+    fun showEmpty(show: Boolean)
+
+    fun showErrorView(show: Boolean)
+
+    fun setErrorDetails(message: String)
+
+    fun updateData(data: List<AttendanceData>)
+
+    fun clearView()
+}

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

@@ -78,4 +78,9 @@ class AuthDialog : BaseDialogFragment<DialogAuthBinding>(), AuthView {
     override fun showDescriptionWithName(name: String) {
         binding.authDescription.text = getString(R.string.auth_description, name).parseAsHtml()
     }
+
+    override fun onDestroyView() {
+        presenter.onDetachView()
+        super.onDestroyView()
+    }
 }

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

@@ -62,7 +62,11 @@ class AuthPresenter @Inject constructor(
                 }
                 isSuccess
             }
-                .onFailure { errorHandler.dispatch(it) }
+                .onFailure {
+                    errorHandler.dispatch(it)
+                    view?.showProgress(false)
+                    view?.showContent(true)
+                }
                 .onSuccess {
                     if (it) {
                         view?.showSuccess(true)

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

@@ -10,9 +10,10 @@ import android.webkit.WebViewClient
 import androidx.core.os.bundleOf
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.databinding.DialogCaptchaBinding
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.ui.base.BaseDialogFragment
+import io.github.wulkanowy.utils.WebkitCookieManagerProxy
 import timber.log.Timber
 import javax.inject.Inject
 
@@ -20,7 +21,10 @@ import javax.inject.Inject
 class CaptchaDialog : BaseDialogFragment<DialogCaptchaBinding>() {
 
     @Inject
-    lateinit var sdk: Sdk
+    lateinit var wulkanowySdkFactory: WulkanowySdkFactory
+
+    @Inject
+    lateinit var webkitCookieManagerProxy: WebkitCookieManagerProxy
 
     private var webView: WebView? = null
 
@@ -55,7 +59,7 @@ class CaptchaDialog : BaseDialogFragment<DialogCaptchaBinding>() {
             webView = this
             with(settings) {
                 javaScriptEnabled = true
-                userAgentString = sdk.userAgent
+                userAgentString = wulkanowySdkFactory.create().userAgent
             }
 
             webViewClient = object : WebViewClient() {
@@ -80,6 +84,7 @@ class CaptchaDialog : BaseDialogFragment<DialogCaptchaBinding>() {
     }
 
     override fun onDestroy() {
+        webkitCookieManagerProxy.webkitCookieManager?.flush()
         webView?.destroy()
         super.onDestroy()
     }

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

@@ -304,6 +304,7 @@ class DashboardPresenter @Inject constructor(
                     forceRefresh = forceRefresh
                 )
             }
+                .mapResourceData { it.map { messageWithAuthor -> messageWithAuthor.message } }
                 .onResourceError { errorHandler.dispatch(it) }
                 .takeIf { DashboardItem.Tile.MESSAGES in selectedTiles } ?: flowSuccess
 
@@ -438,7 +439,7 @@ class DashboardPresenter @Inject constructor(
     private fun loadLessons(student: Student, forceRefresh: Boolean) {
         flatResourceFlow {
             val semester = semesterRepository.getCurrentSemester(student)
-            val date = when (isStudentHasLessonsOnWeekendUseCase(student, semester)) {
+            val date = when (isStudentHasLessonsOnWeekendUseCase(semester)) {
                 true -> LocalDate.now()
                 else -> LocalDate.now().nextOrSameSchoolDay
             }

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

@@ -159,7 +159,7 @@ class GradeAverageProvider @Inject constructor(
             ?.updateModifiers(student, config).orEmpty()
 
         (updatedSecondSemesterGrades + updatedFirstSemesterGrades).calcAverage(
-            config.isOptionalArithmeticAverage
+            isOptionalArithmeticAverage = config.isOptionalArithmeticAverage,
         )
     } else {
         secondSemesterSubject.average
@@ -173,13 +173,21 @@ class GradeAverageProvider @Inject constructor(
         config: AverageCalcParams,
     ): Double {
         return if (!isAnyVulcanAverage || config.forceAverageCalc) {
-            val divider = if (secondSemesterSubject.grades.any { it.weightValue > .0 }) 2 else 1
+            val isSecondSemesterHasWeightGrade = secondSemesterSubject.grades
+                .any { it.weightValue > .0 }
+            val isSecondSemesterHasArithmeticGrade = secondSemesterSubject.grades
+                .all { it.weightValue == .0 } && config.isOptionalArithmeticAverage
+            val isSecondSemesterHaveAverage =
+                isSecondSemesterHasWeightGrade || isSecondSemesterHasArithmeticGrade
+
+            val divider = if (isSecondSemesterHaveAverage) 2 else 1
             val secondSemesterAverage = secondSemesterSubject.grades
                 .updateModifiers(student, config)
-                .calcAverage(config.isOptionalArithmeticAverage)
+                .calcAverage(isOptionalArithmeticAverage = config.isOptionalArithmeticAverage)
             val firstSemesterAverage = firstSemesterSubject?.grades
                 ?.updateModifiers(student, config)
-                ?.calcAverage(config.isOptionalArithmeticAverage) ?: secondSemesterAverage
+                ?.calcAverage(isOptionalArithmeticAverage = config.isOptionalArithmeticAverage)
+                ?: secondSemesterAverage
 
             (secondSemesterAverage + firstSemesterAverage) / divider
         } else {
@@ -225,7 +233,7 @@ class GradeAverageProvider @Inject constructor(
                             subject = summary.subject,
                             average = if (!isAnyAverage || params.forceAverageCalc) {
                                 grades.updateModifiers(student, params)
-                                    .calcAverage(params.isOptionalArithmeticAverage)
+                                    .calcAverage(isOptionalArithmeticAverage = params.isOptionalArithmeticAverage)
                             } else summary.average,
                             points = summary.pointsSum,
                             summary = summary,
@@ -286,8 +294,13 @@ class GradeAverageProvider @Inject constructor(
                 proposedPoints = "",
                 finalPoints = "",
                 pointsSum = "",
-                average = if (calcAverage) details.updateModifiers(student, params)
+                average = when {
-                    .calcAverage(params.isOptionalArithmeticAverage) else .0
+                    calcAverage -> details
+                        .updateModifiers(student, params)
+                        .calcAverage(isOptionalArithmeticAverage = params.isOptionalArithmeticAverage)
+
+                    else -> .0
+                }
             )
         }
     }

app/src/main/java/io/github/wulkanowy/ui/modules/login/form/LoginFormPresenter.kt

@@ -14,6 +14,7 @@ import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
 import io.github.wulkanowy.data.resourceFlow
 import io.github.wulkanowy.domain.adminmessage.GetAppropriateAdminMessageUseCase
+import io.github.wulkanowy.sdk.scrapper.login.InvalidSymbolException
 import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.modules.login.LoginData
 import io.github.wulkanowy.ui.modules.login.LoginErrorHandler
@@ -204,6 +205,9 @@ class LoginFormPresenter @Inject constructor(
             }
             .onResourceError {
                 loginErrorHandler.dispatch(it)
+                if (it is InvalidSymbolException) {
+                    loginErrorHandler.showDefaultMessage(it)
+                }
                 lastError = it
                 view?.showContact(true)
                 analytics.logEvent(

app/src/main/java/io/github/wulkanowy/ui/modules/message/mailboxchooser/MailboxChooserDialog.kt

@@ -47,7 +47,6 @@ class MailboxChooserDialog : BaseDialogFragment<DialogMailboxChooserBinding>(),
     }
 
 
-    @Suppress("UNCHECKED_CAST")
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         presenter.onAttachView(

app/src/main/java/io/github/wulkanowy/ui/modules/message/preview/MessagePreviewAdapter.kt

@@ -50,12 +50,15 @@ class MessagePreviewAdapter @Inject constructor() :
             ViewType.MESSAGE.id -> MessageViewHolder(
                 ItemMessagePreviewBinding.inflate(inflater, parent, false)
             )
+
             ViewType.DIVIDER.id -> DividerViewHolder(
                 ItemMessageDividerBinding.inflate(inflater, parent, false)
             )
+
             ViewType.ATTACHMENT.id -> AttachmentViewHolder(
                 ItemMessageAttachmentBinding.inflate(inflater, parent, false)
             )
+
             else -> throw IllegalStateException()
         }
     }
@@ -66,6 +69,7 @@ class MessagePreviewAdapter @Inject constructor() :
                 holder,
                 requireNotNull(messageWithAttachment).message
             )
+
             is AttachmentViewHolder -> bindAttachment(
                 holder,
                 requireNotNull(messageWithAttachment).attachments[position - 2]
@@ -82,9 +86,11 @@ class MessagePreviewAdapter @Inject constructor() :
             recipientCount > 1 -> {
                 context.getString(R.string.message_read_by, message.readBy, recipientCount)
             }
+
             message.readBy == 1 || (isReceived && !message.unread) -> {
                 context.getString(R.string.message_read, context.getString(R.string.all_yes))
             }
+
             else -> context.getString(R.string.message_read, context.getString(R.string.all_no))
         }
 

app/src/main/java/io/github/wulkanowy/ui/modules/message/preview/MessagePreviewFragment.kt

@@ -44,18 +44,33 @@ class MessagePreviewFragment :
 
     private var menuForwardButton: MenuItem? = null
 
+    private var menuRestoreButton: MenuItem? = null
+
     private var menuDeleteButton: MenuItem? = null
 
+    private var menuDeleteForeverButton: MenuItem? = null
+
     private var menuShareButton: MenuItem? = null
 
     private var menuPrintButton: MenuItem? = null
 
+    private var menuMuteButton: MenuItem? = null
+
     override val titleStringId: Int
         get() = R.string.message_title
 
     override val deleteMessageSuccessString: String
         get() = getString(R.string.message_delete_success)
 
+    override val muteMessageSuccessString: String
+        get() = getString(R.string.message_mute_success)
+
+    override val unmuteMessageSuccessString: String
+        get() = getString(R.string.message_unmute_success)
+
+    override val restoreMessageSuccessString: String
+        get() = getString(R.string.message_restore_success)
+
     override val messageNoSubjectString: String
         get() = getString(R.string.message_no_subject)
 
@@ -67,10 +82,10 @@ class MessagePreviewFragment :
         get() = getString(R.string.message_not_exists)
 
     companion object {
-        const val MESSAGE_ID_KEY = "message_id"
+        private const val MESSAGE_ARG_KEY = "message"
 
         fun newInstance(message: Message) = MessagePreviewFragment().apply {
-            arguments = bundleOf(MESSAGE_ID_KEY to message)
+            arguments = bundleOf(MESSAGE_ARG_KEY to message)
         }
     }
 
@@ -86,7 +101,7 @@ class MessagePreviewFragment :
         messageContainer = binding.messagePreviewContainer
         presenter.onAttachView(
             view = this,
-            message = (savedInstanceState ?: arguments)?.serializable(MESSAGE_ID_KEY),
+            message = requireArguments().serializable(MESSAGE_ARG_KEY),
         )
     }
 
@@ -103,9 +118,12 @@ class MessagePreviewFragment :
         inflater.inflate(R.menu.action_menu_message_preview, menu)
         menuReplyButton = menu.findItem(R.id.messagePreviewMenuReply)
         menuForwardButton = menu.findItem(R.id.messagePreviewMenuForward)
+        menuRestoreButton = menu.findItem(R.id.messagePreviewMenuRestore)
         menuDeleteButton = menu.findItem(R.id.messagePreviewMenuDelete)
+        menuDeleteForeverButton = menu.findItem(R.id.messagePreviewMenuDeleteForever)
         menuShareButton = menu.findItem(R.id.messagePreviewMenuShare)
         menuPrintButton = menu.findItem(R.id.messagePreviewMenuPrint)
+        menuMuteButton = menu.findItem(R.id.messagePreviewMenuMute)
         presenter.onCreateOptionsMenu()
 
         menu.findItem(R.id.mainMenuAccount).isVisible = false
@@ -115,9 +133,12 @@ class MessagePreviewFragment :
         return when (item.itemId) {
             R.id.messagePreviewMenuReply -> presenter.onReply()
             R.id.messagePreviewMenuForward -> presenter.onForward()
+            R.id.messagePreviewMenuRestore -> presenter.onMessageRestore()
             R.id.messagePreviewMenuDelete -> presenter.onMessageDelete()
+            R.id.messagePreviewMenuDeleteForever -> presenter.onMessageDelete()
             R.id.messagePreviewMenuShare -> presenter.onShare()
             R.id.messagePreviewMenuPrint -> presenter.onPrint()
+            R.id.messagePreviewMenuMute -> presenter.onMute()
             else -> false
         }
     }
@@ -129,6 +150,11 @@ class MessagePreviewFragment :
         }
     }
 
+    override fun updateMuteToggleButton(isMuted: Boolean) {
+        menuMuteButton?.setTitle(if (isMuted) R.string.message_unmute else R.string.message_mute)
+
+    }
+
     override fun showProgress(show: Boolean) {
         binding.messagePreviewProgress.visibility = if (show) VISIBLE else GONE
     }
@@ -137,20 +163,15 @@ class MessagePreviewFragment :
         binding.messagePreviewRecycler.visibility = if (show) VISIBLE else GONE
     }
 
-    override fun showOptions(show: Boolean, isReplayable: Boolean) {
+    override fun showOptions(show: Boolean, isReplayable: Boolean, isRestorable: Boolean) {
-        menuReplyButton?.isVisible = isReplayable
+        menuReplyButton?.isVisible = show && isReplayable
         menuForwardButton?.isVisible = show
-        menuDeleteButton?.isVisible = show
+        menuRestoreButton?.isVisible = show && isRestorable
+        menuDeleteButton?.isVisible = show && !isRestorable
+        menuDeleteForeverButton?.isVisible = show && isRestorable
         menuShareButton?.isVisible = show
         menuPrintButton?.isVisible = show
-    }
+        menuMuteButton?.isVisible = show && isReplayable
-
-    override fun setDeletedOptionsLabels() {
-        menuDeleteButton?.setTitle(R.string.message_delete_forever)
-    }
-
-    override fun setNotDeletedOptionsLabels() {
-        menuDeleteButton?.setTitle(R.string.message_move_to_trash)
     }
 
     override fun showErrorView(show: Boolean) {
@@ -212,11 +233,6 @@ class MessagePreviewFragment :
         (activity as MainActivity).popView()
     }
 
-    override fun onSaveInstanceState(outState: Bundle) {
-        outState.putSerializable(MESSAGE_ID_KEY, presenter.message)
-        super.onSaveInstanceState(outState)
-    }
-
     override fun onDestroyView() {
         presenter.onDetachView()
         super.onDestroyView()

app/src/main/java/io/github/wulkanowy/ui/modules/message/preview/MessagePreviewPresenter.kt

@@ -3,10 +3,15 @@ package io.github.wulkanowy.ui.modules.message.preview
 import android.annotation.SuppressLint
 import androidx.core.text.parseAsHtml
 import io.github.wulkanowy.R
-import io.github.wulkanowy.data.*
 import io.github.wulkanowy.data.db.entities.Message
-import io.github.wulkanowy.data.db.entities.MessageAttachment
+import io.github.wulkanowy.data.db.entities.MessageWithAttachment
 import io.github.wulkanowy.data.enums.MessageFolder
+import io.github.wulkanowy.data.flatResourceFlow
+import io.github.wulkanowy.data.logResourceStatus
+import io.github.wulkanowy.data.onResourceData
+import io.github.wulkanowy.data.onResourceError
+import io.github.wulkanowy.data.onResourceNotLoading
+import io.github.wulkanowy.data.onResourceSuccess
 import io.github.wulkanowy.data.repositories.MessageRepository
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
@@ -14,9 +19,11 @@ import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
 import io.github.wulkanowy.utils.AnalyticsHelper
 import io.github.wulkanowy.utils.toFormattedString
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.launch
 import timber.log.Timber
 import javax.inject.Inject
+import kotlin.time.Duration.Companion.seconds
 
 class MessagePreviewPresenter @Inject constructor(
     errorHandler: ErrorHandler,
@@ -26,20 +33,17 @@ class MessagePreviewPresenter @Inject constructor(
     private val analytics: AnalyticsHelper
 ) : BasePresenter<MessagePreviewView>(errorHandler, studentRepository) {
 
-    var message: Message? = null
+    private var messageWithAttachments: MessageWithAttachment? = null
-
-    var attachments: List<MessageAttachment>? = null
 
     private lateinit var lastError: Throwable
 
     private var retryCallback: () -> Unit = {}
 
-    fun onAttachView(view: MessagePreviewView, message: Message?) {
+    fun onAttachView(view: MessagePreviewView, message: Message) {
         super.onAttachView(view)
         view.initView()
         errorHandler.showErrorMessage = ::showErrorViewOnError
-        this.message = message
+        loadData(message)
-        loadData(requireNotNull(message))
     }
 
     private fun onMessageLoadRetry(message: Message) {
@@ -66,25 +70,24 @@ class MessagePreviewPresenter @Inject constructor(
             .logResourceStatus("message ${messageToLoad.messageId} preview")
             .onResourceData {
                 if (it != null) {
-                    message = it.message
+                    messageWithAttachments = it
-                    attachments = it.attachments
                     view?.apply {
                         setMessageWithAttachment(it)
                         showContent(true)
                         initOptions()
-
+                        updateMuteToggleButton(isMuted = it.mutedMessageSender != null)
                         if (preferencesRepository.isIncognitoMode && it.message.unread) {
                             showMessage(R.string.message_incognito_description)
                         }
                     }
                 } else {
+                    delay(1.seconds)
                     view?.run {
                         showMessage(messageNotExists)
                         popView()
                     }
                 }
-            }
+            }.onResourceSuccess {
-            .onResourceSuccess {
                 if (it != null) {
                     analytics.logEvent(
                         "load_item",
@@ -92,31 +95,28 @@ class MessagePreviewPresenter @Inject constructor(
                         "length" to it.message.content.length
                     )
                 }
-            }
+            }.onResourceNotLoading { view?.showProgress(false) }.onResourceError {
-            .onResourceNotLoading { view?.showProgress(false) }
-            .onResourceError {
                 retryCallback = { onMessageLoadRetry(messageToLoad) }
                 errorHandler.dispatch(it)
-            }
+            }.launch()
-            .launch()
     }
 
     fun onReply(): Boolean {
-        return if (message != null) {
+        return if (messageWithAttachments?.message != null) {
-            view?.openMessageReply(message)
+            view?.openMessageReply(messageWithAttachments?.message)
             true
         } else false
     }
 
     fun onForward(): Boolean {
-        return if (message != null) {
+        return if (messageWithAttachments?.message != null) {
-            view?.openMessageForward(message)
+            view?.openMessageForward(messageWithAttachments?.message)
             true
         } else false
     }
 
     fun onShare(): Boolean {
-        val message = message ?: return false
+        val message = messageWithAttachments?.message ?: return false
         val subject = message.subject.ifBlank { view?.messageNoSubjectString.orEmpty() }
 
         val text = buildString {
@@ -129,13 +129,15 @@ class MessagePreviewPresenter @Inject constructor(
 
             appendLine(message.content.parseAsHtml())
 
-            if (!attachments.isNullOrEmpty()) {
+            if (!messageWithAttachments?.attachments.isNullOrEmpty()) {
                 appendLine()
                 appendLine("Załączniki:")
 
-                append(attachments.orEmpty().joinToString(separator = "\n") { attachment ->
+                append(
-                    "${attachment.filename}: ${attachment.url}"
+                    messageWithAttachments?.attachments.orEmpty()
-                })
+                        .joinToString(separator = "\n") { attachment ->
+                            "${attachment.filename}: ${attachment.url}"
+                        })
             }
         }
 
@@ -148,7 +150,7 @@ class MessagePreviewPresenter @Inject constructor(
 
     @SuppressLint("NewApi")
     fun onPrint(): Boolean {
-        val message = message ?: return false
+        val message = messageWithAttachments?.message ?: return false
         val subject = message.subject.ifBlank { view?.messageNoSubjectString.orEmpty() }
 
         val dateString = message.date.toFormattedString("yyyy-MM-dd HH:mm:ss")
@@ -159,8 +161,7 @@ class MessagePreviewPresenter @Inject constructor(
             append("<div><h4>Od</h4>${message.sender}</div>")
             append("<div><h4>DO</h4>${message.recipients}</div>")
         }
-        val messageContent = "<p>${message.content}</p>"
+        val messageContent = "<p>${message.content}</p>".replace(Regex("[\\n\\r]{2,}"), "</p><p>")
-            .replace(Regex("[\\n\\r]{2,}"), "</p><p>")
             .replace(Regex("[\\n\\r]"), "<br>")
 
         val jobName = buildString {
@@ -171,9 +172,7 @@ class MessagePreviewPresenter @Inject constructor(
         }
 
         view?.apply {
-            val html = printHTML
+            val html = printHTML.replace("%SUBJECT%", subject).replace("%CONTENT%", messageContent)
-                .replace("%SUBJECT%", subject)
-                .replace("%CONTENT%", messageContent)
                 .replace("%INFO%", infoContent)
             printDocument(html, jobName)
         }
@@ -181,34 +180,69 @@ class MessagePreviewPresenter @Inject constructor(
         return true
     }
 
-    private fun deleteMessage() {
+    private fun restoreMessage() {
-        message ?: return
+        val message = messageWithAttachments?.message ?: return
 
         view?.run {
             showContent(false)
             showProgress(true)
-            showOptions(show = false, isReplayable = false)
+            showOptions(
+                show = false,
+                isReplayable = false,
+                isRestorable = false,
+            )
             showErrorView(false)
         }
-
+        Timber.i("Restore message ${message.messageGlobalKey}")
-        Timber.i("Delete message ${message?.messageGlobalKey}")
-
         presenterScope.launch {
             runCatching {
                 val student = studentRepository.getCurrentStudent(decryptPass = true)
                 val mailbox = messageRepository.getMailboxByStudent(student)
-                messageRepository.deleteMessage(student, mailbox, message!!)
+                messageRepository.restoreMessages(student, mailbox, listOfNotNull(message))
             }
                 .onFailure {
-                    retryCallback = { onMessageDelete() }
+                    retryCallback = { onMessageRestore() }
                     errorHandler.dispatch(it)
                 }
                 .onSuccess {
                     view?.run {
-                        showMessage(deleteMessageSuccessString)
+                        showMessage(restoreMessageSuccessString)
                         popView()
                     }
                 }
+            view?.showProgress(false)
+        }
+    }
+
+    private fun deleteMessage() {
+        messageWithAttachments?.message ?: return
+
+        view?.run {
+            showContent(false)
+            showProgress(true)
+            showOptions(
+                show = false,
+                isReplayable = false,
+                isRestorable = false,
+            )
+            showErrorView(false)
+        }
+
+        Timber.i("Delete message ${messageWithAttachments?.message?.messageGlobalKey}")
+
+        presenterScope.launch {
+            runCatching {
+                val student = studentRepository.getCurrentStudent(decryptPass = true)
+                messageRepository.deleteMessage(student, messageWithAttachments?.message!!)
+            }.onFailure {
+                retryCallback = { onMessageDelete() }
+                errorHandler.dispatch(it)
+            }.onSuccess {
+                view?.run {
+                    showMessage(deleteMessageSuccessString)
+                    popView()
+                }
+            }
 
             view?.showProgress(false)
         }
@@ -224,6 +258,11 @@ class MessagePreviewPresenter @Inject constructor(
         }
     }
 
+    fun onMessageRestore(): Boolean {
+        restoreMessage()
+        return true
+    }
+
     fun onMessageDelete(): Boolean {
         deleteMessage()
         return true
@@ -232,20 +271,39 @@ class MessagePreviewPresenter @Inject constructor(
     private fun initOptions() {
         view?.apply {
             showOptions(
-                show = message != null,
+                show = messageWithAttachments?.message != null,
-                isReplayable = message?.folderId != MessageFolder.SENT.id,
+                isReplayable = messageWithAttachments?.message?.folderId == MessageFolder.RECEIVED.id,
+                isRestorable = messageWithAttachments?.message?.folderId == MessageFolder.TRASHED.id,
             )
-            message?.let {
-                when (it.folderId == MessageFolder.TRASHED.id) {
-                    true -> setDeletedOptionsLabels()
-                    false -> setNotDeletedOptionsLabels()
-                }
-            }
-
         }
     }
 
     fun onCreateOptionsMenu() {
         initOptions()
     }
+
+    fun onMute(): Boolean {
+        val message = messageWithAttachments?.message ?: return false
+        val isMuted = messageWithAttachments?.mutedMessageSender != null
+
+        presenterScope.launch {
+            runCatching {
+                when (isMuted) {
+                    true -> {
+                        messageRepository.unmuteMessage(message.correspondents)
+                        view?.run { showMessage(unmuteMessageSuccessString) }
+                    }
+
+                    false -> {
+                        messageRepository.muteMessage(message.correspondents)
+                        view?.run { showMessage(muteMessageSuccessString) }
+                    }
+                }
+            }.onFailure {
+                errorHandler.dispatch(it)
+            }
+        }
+        view?.updateMuteToggleButton(isMuted)
+        return true
+    }
 }

app/src/main/java/io/github/wulkanowy/ui/modules/message/preview/MessagePreviewView.kt

@@ -9,6 +9,12 @@ interface MessagePreviewView : BaseView {
 
     val deleteMessageSuccessString: String
 
+    val muteMessageSuccessString: String
+
+    val unmuteMessageSuccessString: String
+
+    val restoreMessageSuccessString: String
+
     val messageNoSubjectString: String
 
     val printHTML: String
@@ -19,6 +25,8 @@ interface MessagePreviewView : BaseView {
 
     fun setMessageWithAttachment(item: MessageWithAttachment)
 
+    fun updateMuteToggleButton(isMuted: Boolean)
+
     fun showProgress(show: Boolean)
 
     fun showContent(show: Boolean)
@@ -29,11 +37,7 @@ interface MessagePreviewView : BaseView {
 
     fun setErrorRetryCallback(callback: () -> Unit)
 
-    fun showOptions(show: Boolean, isReplayable: Boolean)
+    fun showOptions(show: Boolean, isReplayable: Boolean, isRestorable: Boolean)
-
-    fun setDeletedOptionsLabels()
-
-    fun setNotDeletedOptionsLabels()
 
     fun openMessageReply(message: Message?)
 

app/src/main/java/io/github/wulkanowy/ui/modules/message/send/SendMessagePresenter.kt

@@ -203,7 +203,7 @@ class SendMessagePresenter @Inject constructor(
                 subject = subject,
                 content = content,
                 recipients = recipients,
-                mailboxId = mailbox.globalKey,
+                mailbox = mailbox,
             )
         }.logResourceStatus("sending message").onEach {
             when (it) {

app/src/main/java/io/github/wulkanowy/ui/modules/message/tab/MessageTabAdapter.kt

@@ -18,8 +18,7 @@ import io.github.wulkanowy.utils.getThemeAttrColor
 import io.github.wulkanowy.utils.toFormattedString
 import javax.inject.Inject
 
-class MessageTabAdapter @Inject constructor() :
+class MessageTabAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
-    RecyclerView.Adapter<RecyclerView.ViewHolder>() {
 
     lateinit var onItemClickListener: (MessageTabDataItem.MessageItem, position: Int) -> Unit
 
@@ -52,10 +51,11 @@ class MessageTabAdapter @Inject constructor() :
     override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
         val inflater = LayoutInflater.from(parent.context)
 
-        return when (MessageItemViewType.values()[viewType]) {
+        return when (MessageItemViewType.entries[viewType]) {
             MessageItemViewType.FILTERS -> HeaderViewHolder(
                 ItemMessageChipsBinding.inflate(inflater, parent, false)
             )
+
             MessageItemViewType.MESSAGE -> ItemViewHolder(
                 ItemMessageBinding.inflate(inflater, parent, false)
             )
@@ -137,7 +137,12 @@ class MessageTabAdapter @Inject constructor() :
                 ImageViewCompat.setImageTintList(this, ColorStateList.valueOf(currentTextColor))
                 isVisible = message.hasAttachments
             }
-            messageItemUnreadIndicator.isVisible = message.unread
+            messageItemUnreadIndicator.isVisible = message.unread || item.isMuted
+
+            when (item.isMuted) {
+                true -> messageItemUnreadIndicator.setImageResource(R.drawable.ic_notifications_off)
+                else -> messageItemUnreadIndicator.setImageResource(R.drawable.ic_circle_notification)
+            }
 
             root.setOnClickListener {
                 holder.bindingAdapterPosition.let {
@@ -165,8 +170,7 @@ class MessageTabAdapter @Inject constructor() :
         RecyclerView.ViewHolder(binding.root)
 
     private class MessageTabDiffUtil(
-        private val old: List<MessageTabDataItem>,
+        private val old: List<MessageTabDataItem>, private val new: List<MessageTabDataItem>
-        private val new: List<MessageTabDataItem>
     ) : DiffUtil.Callback() {
 
         override fun getOldListSize(): Int = old.size

app/src/main/java/io/github/wulkanowy/ui/modules/message/tab/MessageTabDataItem.kt

@@ -6,6 +6,7 @@ sealed class MessageTabDataItem(val viewType: MessageItemViewType) {
 
     data class MessageItem(
         val message: Message,
+        val isMuted: Boolean,
         val isSelected: Boolean,
         val isActionMode: Boolean
     ) : MessageTabDataItem(MessageItemViewType.MESSAGE)

app/src/main/java/io/github/wulkanowy/ui/modules/message/tab/MessageTabFragment.kt

@@ -5,7 +5,9 @@ import android.view.Menu
 import android.view.MenuInflater
 import android.view.MenuItem
 import android.view.View
-import android.view.View.*
+import android.view.View.GONE
+import android.view.View.INVISIBLE
+import android.view.View.VISIBLE
 import android.widget.CompoundButton
 import androidx.annotation.StringRes
 import androidx.appcompat.view.ActionMode
@@ -64,10 +66,12 @@ class MessageTabFragment : BaseFragment<FragmentMessageTabBinding>(R.layout.frag
         }
 
         override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
-            if (presenter.folder == MessageFolder.TRASHED) {
+            val isTrashFolder = presenter.folder == MessageFolder.TRASHED
-                val menuItem = menu.findItem(R.id.messageTabContextMenuDelete)
+
-                menuItem.setTitle(R.string.message_delete_forever)
+            menu.findItem(R.id.messageTabContextMenuDelete).setVisible(!isTrashFolder)
-            }
+            menu.findItem(R.id.messageTabContextMenuDeleteForever).setVisible(isTrashFolder)
+            menu.findItem(R.id.messageTabContextMenuRestore).setVisible(isTrashFolder)
+
             return presenter.onPrepareActionMode()
         }
 
@@ -79,6 +83,8 @@ class MessageTabFragment : BaseFragment<FragmentMessageTabBinding>(R.layout.frag
         override fun onActionItemClicked(mode: ActionMode, menu: MenuItem): Boolean {
             when (menu.itemId) {
                 R.id.messageTabContextMenuDelete -> presenter.onActionModeSelectDelete()
+                R.id.messageTabContextMenuRestore -> presenter.onActionModeSelectRestore()
+                R.id.messageTabContextMenuDeleteForever -> presenter.onActionModeSelectDelete()
                 R.id.messageTabContextMenuSelectAll -> presenter.onActionModeSelectCheckAll()
             }
             return true

app/src/main/java/io/github/wulkanowy/ui/modules/message/tab/MessageTabPresenter.kt

@@ -4,6 +4,7 @@ import io.github.wulkanowy.R
 import io.github.wulkanowy.data.*
 import io.github.wulkanowy.data.db.entities.Mailbox
 import io.github.wulkanowy.data.db.entities.Message
+import io.github.wulkanowy.data.db.entities.MessageWithMutedAuthor
 import io.github.wulkanowy.data.enums.MessageFolder
 import io.github.wulkanowy.data.repositories.MessageRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
@@ -39,7 +40,7 @@ class MessageTabPresenter @Inject constructor(
     private var mailboxes: List<Mailbox> = emptyList()
     private var selectedMailbox: Mailbox? = null
 
-    private var messages = emptyList<Message>()
+    private var messages = emptyList<MessageWithMutedAuthor>()
 
     private val searchChannel = Channel<String>()
 
@@ -120,8 +121,27 @@ class MessageTabPresenter @Inject constructor(
         return true
     }
 
+    fun onActionModeSelectRestore() {
+        Timber.i("Restore ${messagesToDelete.size} messages")
+        val messageList = messagesToDelete.toList()
+
+        presenterScope.launch {
+            view?.run {
+                showProgress(true)
+                showContent(false)
+                showActionMode(false)
+            }
+            runCatching {
+                val student = studentRepository.getCurrentStudent(true)
+                messageRepository.restoreMessages(student, selectedMailbox, messageList)
+            }
+                .onFailure(errorHandler::dispatch)
+                .onSuccess { view?.showMessage(R.string.message_messages_restored) }
+        }
+    }
+
     fun onActionModeSelectDelete() {
-        Timber.i("Delete ${messagesToDelete.size} messages)")
+        Timber.i("Delete ${messagesToDelete.size} messages")
         val messageList = messagesToDelete.toList()
 
         presenterScope.launch {
@@ -133,7 +153,7 @@ class MessageTabPresenter @Inject constructor(
 
             runCatching {
                 val student = studentRepository.getCurrentStudent(true)
-                messageRepository.deleteMessages(student, selectedMailbox, messageList)
+                messageRepository.deleteMessages(student, messageList)
             }
                 .onFailure(errorHandler::dispatch)
                 .onSuccess { view?.showMessage(R.string.message_messages_deleted) }
@@ -141,7 +161,7 @@ class MessageTabPresenter @Inject constructor(
     }
 
     fun onActionModeSelectCheckAll() {
-        val messagesToSelect = getFilteredData()
+        val messagesToSelect = getFilteredData().map { it.message }
         val isAllSelected = messagesToDelete.containsAll(messagesToSelect)
 
         if (isAllSelected) {
@@ -188,7 +208,7 @@ class MessageTabPresenter @Inject constructor(
                 view?.showActionMode(false)
             }
 
-            val filteredData = getFilteredData()
+            val filteredData = getFilteredData().map { it.message }
 
             view?.run {
                 updateActionModeTitle(messagesToDelete.size)
@@ -320,25 +340,31 @@ class MessageTabPresenter @Inject constructor(
         }
     }
 
-    private fun getFilteredData(): List<Message> {
+    private fun getFilteredData(): List<MessageWithMutedAuthor> {
         if (lastSearchQuery.trim().isEmpty()) {
-            val sortedMessages = messages.sortedByDescending { it.date }
+            val sortedMessages = messages.sortedByDescending { it.message.date }
             return when {
-                (onlyUnread == true) && onlyWithAttachments -> sortedMessages.filter { it.unread == onlyUnread && it.hasAttachments == onlyWithAttachments }
+                (onlyUnread == true) && onlyWithAttachments -> sortedMessages.filter {
-                (onlyUnread == true) -> sortedMessages.filter { it.unread == onlyUnread }
+                    it.message.unread == onlyUnread && it.message.hasAttachments == onlyWithAttachments
-                onlyWithAttachments -> sortedMessages.filter { it.hasAttachments == onlyWithAttachments }
+                }
+
+                (onlyUnread == true) -> sortedMessages.filter { it.message.unread == onlyUnread }
+                onlyWithAttachments -> sortedMessages.filter { it.message.hasAttachments == onlyWithAttachments }
                 else -> sortedMessages
             }
         } else {
             val sortedMessages = messages
-                .map { it to calculateMatchRatio(it, lastSearchQuery) }
+                .map { it to calculateMatchRatio(it.message, lastSearchQuery) }
-                .sortedWith(compareBy<Pair<Message, Int>> { -it.second }.thenByDescending { it.first.date })
+                .sortedWith(compareBy<Pair<MessageWithMutedAuthor, Int>> { -it.second }.thenByDescending { it.first.message.date })
                 .filter { it.second > 6000 }
                 .map { it.first }
             return when {
-                (onlyUnread == true) && onlyWithAttachments -> sortedMessages.filter { it.unread == onlyUnread && it.hasAttachments == onlyWithAttachments }
+                (onlyUnread == true) && onlyWithAttachments -> sortedMessages.filter {
-                (onlyUnread == true) -> sortedMessages.filter { it.unread == onlyUnread }
+                    it.message.unread == onlyUnread && it.message.hasAttachments == onlyWithAttachments
-                onlyWithAttachments -> sortedMessages.filter { it.hasAttachments == onlyWithAttachments }
+                }
+
+                (onlyUnread == true) -> sortedMessages.filter { it.message.unread == onlyUnread }
+                onlyWithAttachments -> sortedMessages.filter { it.message.hasAttachments == onlyWithAttachments }
                 else -> sortedMessages
             }
         }
@@ -367,8 +393,9 @@ class MessageTabPresenter @Inject constructor(
 
             addAll(data.map { message ->
                 MessageTabDataItem.MessageItem(
-                    message = message,
+                    message = message.message,
-                    isSelected = messagesToDelete.any { it.messageGlobalKey == message.messageGlobalKey },
+                    isMuted = message.mutedMessageSender != null,
+                    isSelected = messagesToDelete.any { it.messageGlobalKey == message.message.messageGlobalKey },
                     isActionMode = isActionMode
                 )
             })

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

@@ -2,6 +2,7 @@ package io.github.wulkanowy.ui.modules.schoolannouncement
 
 import android.view.LayoutInflater
 import android.view.ViewGroup
+import androidx.core.view.isVisible
 import androidx.recyclerview.widget.RecyclerView
 import io.github.wulkanowy.data.db.entities.SchoolAnnouncement
 import io.github.wulkanowy.databinding.ItemSchoolAnnouncementBinding
@@ -29,6 +30,10 @@ class SchoolAnnouncementAdapter @Inject constructor() :
             schoolAnnouncementItemDate.text = item.date.toFormattedString()
             schoolAnnouncementItemType.text = item.subject
             schoolAnnouncementItemContent.text = item.content.parseUonetHtml()
+            with(schoolAnnouncementItemAuthor) {
+                text = item.author
+                isVisible = !item.author.isNullOrBlank()
+            }
 
             root.setOnClickListener { onItemClickListener(item) }
         }

app/src/main/java/io/github/wulkanowy/ui/modules/settings/appearance/AppearanceFragment.kt

@@ -4,6 +4,7 @@ import android.content.SharedPreferences
 import android.os.Bundle
 import android.view.View
 import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SeekBarPreference
 import com.yariksoffice.lingver.Lingver
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
@@ -36,6 +37,15 @@ class AppearanceFragment : PreferenceFragmentCompat(),
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.scheme_preferences_appearance, rootKey)
+        val attendanceTargetPref =
+            findPreference<SeekBarPreference>(requireContext().getString(R.string.pref_key_attendance_target))!!
+        attendanceTargetPref.setOnPreferenceChangeListener { _, newValueObj ->
+            val newValue = (((newValueObj as Int).toDouble() + 2.5) / 5).toInt() * 5
+            attendanceTargetPref.value =
+                newValue.coerceIn(attendanceTargetPref.min, attendanceTargetPref.max)
+
+            false
+        }
     }
 
     override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {

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

@@ -3,7 +3,6 @@ package io.github.wulkanowy.ui.modules.timetable
 import android.os.Handler
 import android.os.Looper
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.Timetable
 import io.github.wulkanowy.data.enums.TimetableGapsMode.BETWEEN_AND_BEFORE_LESSONS
 import io.github.wulkanowy.data.enums.TimetableGapsMode.NO_GAPS
@@ -150,7 +149,7 @@ class TimetablePresenter @Inject constructor(
             val student = studentRepository.getCurrentStudent()
             val semester = semesterRepository.getCurrentSemester(student)
 
-            checkInitialAndCurrentDate(student, semester)
+            checkInitialAndCurrentDate(semester)
             timetableRepository.getTimetable(
                 student = student,
                 semester = semester,
@@ -194,9 +193,9 @@ class TimetablePresenter @Inject constructor(
             .launch()
     }
 
-    private suspend fun checkInitialAndCurrentDate(student: Student, semester: Semester) {
+    private suspend fun checkInitialAndCurrentDate(semester: Semester) {
         if (initialDate == null) {
-            isWeekendHasLessons = isStudentHasLessonsOnWeekendUseCase(student, semester)
+            isWeekendHasLessons = isStudentHasLessonsOnWeekendUseCase(semester)
             initialDate = getInitialDate(semester)
         }
 

app/src/main/java/io/github/wulkanowy/utils/AttendanceExtension.kt

@@ -10,19 +10,19 @@ import io.github.wulkanowy.sdk.scrapper.attendance.AttendanceCategory
  * (https://www.vulcan.edu.pl/vulcang_files/user/AABW/AABW-PDF/uonetplus/uonetplus_Frekwencja-liczby-obecnych-nieobecnych.pdf)
  */
 
-private inline val AttendanceSummary.allPresences: Double
+inline val AttendanceSummary.allPresences: Int
-    get() = presence.toDouble() + absenceForSchoolReasons + lateness + latenessExcused
+    get() = presence + absenceForSchoolReasons + lateness + latenessExcused
 
-private inline val AttendanceSummary.allAbsences: Double
+inline val AttendanceSummary.allAbsences: Int
-    get() = absence.toDouble() + absenceExcused
+    get() = absence + absenceExcused
 
 inline val Attendance.isExcusableOrNotExcused: Boolean
     get() = (excusable || ((absence || lateness) && !excused)) && excuseStatus == null
 
-fun AttendanceSummary.calculatePercentage() = calculatePercentage(allPresences, allAbsences)
+fun AttendanceSummary.calculatePercentage() = calculatePercentage(allPresences.toDouble(), allAbsences.toDouble())
 
 fun List<AttendanceSummary>.calculatePercentage(): Double {
-    return calculatePercentage(sumOf { it.allPresences }, sumOf { it.allAbsences })
+    return calculatePercentage(sumOf { it.allPresences.toDouble() }, sumOf { it.allAbsences.toDouble() })
 }
 
 private fun calculatePercentage(presence: Double, absence: Double): Double {

app/src/main/java/io/github/wulkanowy/utils/BundleExtension.kt

@@ -4,30 +4,31 @@ import android.content.Intent
 import android.os.Build
 import android.os.Bundle
 import android.os.Parcelable
+import androidx.core.os.BundleCompat
 import java.io.Serializable
 
+// Even though API was introduced in 33, we use 34 as 33 is bugged in some scenarios.
+
 inline fun <reified T : Serializable> Bundle.serializable(key: String): T = when {
-    Build.VERSION.SDK_INT >= 33 -> getSerializable(key, T::class.java)!!
+    Build.VERSION.SDK_INT >= 34 -> getSerializable(key, T::class.java)!!
     else -> @Suppress("DEPRECATION") getSerializable(key) as T
 }
 
 inline fun <reified T : Serializable> Bundle.nullableSerializable(key: String): T? = when {
-    Build.VERSION.SDK_INT >= 33 -> getSerializable(key, T::class.java)
+    Build.VERSION.SDK_INT >= 34 -> getSerializable(key, T::class.java)
     else -> @Suppress("DEPRECATION") getSerializable(key) as T?
 }
 
 @Suppress("UNCHECKED_CAST")
-inline fun <reified T : Parcelable> Bundle.parcelableArray(key: String): Array<T>? = when {
+inline fun <reified T : Parcelable> Bundle.parcelableArray(key: String): Array<T>? =
-    Build.VERSION.SDK_INT >= 33 -> getParcelableArray(key, T::class.java)
+    BundleCompat.getParcelableArray(this, key, T::class.java) as Array<T>?
-    else -> @Suppress("DEPRECATION") getParcelableArray(key) as Array<T>?
-}
 
 inline fun <reified T : Serializable> Intent.serializable(key: String): T = when {
-    Build.VERSION.SDK_INT >= 33 -> getSerializableExtra(key, T::class.java)!!
+    Build.VERSION.SDK_INT >= 34 -> getSerializableExtra(key, T::class.java)!!
     else -> @Suppress("DEPRECATION") getSerializableExtra(key) as T
 }
 
 inline fun <reified T : Serializable> Intent.nullableSerializable(key: String): T? = when {
-    Build.VERSION.SDK_INT >= 33 -> getSerializableExtra(key, T::class.java)
+    Build.VERSION.SDK_INT >= 34 -> getSerializableExtra(key, T::class.java)
     else -> @Suppress("DEPRECATION") getSerializableExtra(key) as T?
 }

app/src/main/java/io/github/wulkanowy/utils/ExceptionExtension.kt

@@ -3,11 +3,13 @@ package io.github.wulkanowy.utils
 import android.content.res.Resources
 import io.github.wulkanowy.R
 import io.github.wulkanowy.sdk.exception.FeatureNotAvailableException
+import io.github.wulkanowy.sdk.scrapper.exception.AccountInactiveException
 import io.github.wulkanowy.sdk.scrapper.exception.CloudflareVerificationException
 import io.github.wulkanowy.sdk.scrapper.exception.FeatureDisabledException
 import io.github.wulkanowy.sdk.scrapper.exception.ScrapperException
 import io.github.wulkanowy.sdk.scrapper.exception.ServiceUnavailableException
 import io.github.wulkanowy.sdk.scrapper.exception.VulcanException
+import io.github.wulkanowy.sdk.scrapper.login.BadCredentialsException
 import io.github.wulkanowy.sdk.scrapper.login.NotLoggedInException
 import io.github.wulkanowy.sdk.scrapper.login.PasswordChangeRequiredException
 import okhttp3.internal.http2.StreamResetException
@@ -33,6 +35,8 @@ fun Resources.getErrorString(error: Throwable): String = when (error) {
     is ServiceUnavailableException -> R.string.error_service_unavailable
     is FeatureDisabledException -> R.string.error_feature_disabled
     is FeatureNotAvailableException -> R.string.error_feature_not_available
+    is BadCredentialsException -> R.string.error_password_invalid
+    is AccountInactiveException -> R.string.error_account_inactive
     is VulcanException -> R.string.error_unknown_uonet
     is ScrapperException -> R.string.error_unknown_app
     is CloudflareVerificationException -> R.string.error_cloudflare_captcha

app/src/main/java/io/github/wulkanowy/utils/SdkExtension.kt

@@ -1,42 +0,0 @@
-package io.github.wulkanowy.utils
-
-import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.sdk.Sdk
-import timber.log.Timber
-
-fun Sdk.init(student: Student): Sdk {
-    email = student.email
-    password = student.password
-    symbol = student.symbol
-    schoolSymbol = student.schoolSymbol
-    studentId = student.studentId
-    classId = student.classId
-    emptyCookieJarInterceptor = true
-
-    if (Sdk.Mode.valueOf(student.loginMode) == Sdk.Mode.HEBE) {
-        mobileBaseUrl = student.mobileBaseUrl
-    } else {
-        scrapperBaseUrl = student.scrapperBaseUrl
-        domainSuffix = student.scrapperDomainSuffix
-        loginType = Sdk.ScrapperLoginType.valueOf(student.loginType)
-    }
-
-    mode = Sdk.Mode.valueOf(student.loginMode)
-    mobileBaseUrl = student.mobileBaseUrl
-    keyId = student.certificateKey
-    privatePem = student.privateKey
-
-    Timber.d("Sdk in ${student.loginMode} mode reinitialized")
-
-    return this
-}
-
-fun Sdk.switchSemester(semester: Semester): Sdk {
-    return switchDiary(
-        diaryId = semester.diaryId,
-        kindergartenDiaryId = semester.kindergartenDiaryId,
-        schoolYear = semester.schoolYear,
-        unitId = semester.unitId,
-    )
-}

app/src/main/java/io/github/wulkanowy/utils/WebkitCookieManagerProxy.kt

@@ -5,17 +5,21 @@ import java.net.CookiePolicy
 import java.net.CookieStore
 import java.net.HttpCookie
 import java.net.URI
+import javax.inject.Inject
+import javax.inject.Singleton
 import android.webkit.CookieManager as WebkitCookieManager
 import java.net.CookieManager as JavaCookieManager
 
-class WebkitCookieManagerProxy : JavaCookieManager(null, CookiePolicy.ACCEPT_ALL) {
+@Singleton
+class WebkitCookieManagerProxy @Inject constructor() :
+    JavaCookieManager(null, CookiePolicy.ACCEPT_ALL) {
 
-    private val webkitCookieManager: WebkitCookieManager? = getWebkitCookieManager()
+    val webkitCookieManager: WebkitCookieManager? = getCookieManager()
 
     /**
      * @see [https://stackoverflow.com/a/70354583/6695449]
      */
-    private fun getWebkitCookieManager(): WebkitCookieManager? {
+    private fun getCookieManager(): WebkitCookieManager? {
         return try {
             WebkitCookieManager.getInstance()
         } catch (e: AndroidRuntimeException) {

app/src/main/play/release-notes/pl-PL/default.txt

@@ -1,5 +1,11 @@
-Wersja 2.4.1
+Wersja 2.5.1
 
-- drobne poprawki stabilności aplikacji i odświeżania danych
+— dodaliśmy wyświetlanie ogłoszeń
+— dodaliśmy opcję przywracania wiadomości z kosza
+— dodaliśmy opcję wyciszania nadawców wiadomości
+— naprawiliśmy opcjonalne liczenie średniej arytmetycznej, kiedy brak ocen z wagą w drugim semestrze
+— usprawniliśmy ładowanie frekwencji i planu lekcji
+— naprawiliśmy usprawiedliwianie nieobecności i autoryzację u użytkowników eduOne
+— zmieniliśmy komunikat o zmienionym haśle
 
 Pełna lista zmian: https://github.com/wulkanowy/wulkanowy/releases

app/src/main/res/drawable/ic_circle_notification.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="oval">
+
+    <solid android:color="@color/colorPrimary" />
+
+    <size
+        android:width="10dp"
+        android:height="10dp" />
+</shape>

app/src/main/res/drawable/ic_menu_attendance_calculator.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#FFFFFF"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M19,7H9C7.9,7 7,7.9 7,9v10c0,1.1 0.9,2 2,2h10c1.1,0 2,-0.9 2,-2V9C21,7.9 20.1,7 19,7zM19,9v2H9V9H19zM13,15v-2h2v2H13zM15,17v2h-2v-2H15zM11,15H9v-2h2V15zM17,13h2v2h-2V13zM9,17h2v2H9V17zM17,19v-2h2v2H17zM6,17H5c-1.1,0 -2,-0.9 -2,-2V5c0,-1.1 0.9,-2 2,-2h10c1.1,0 2,0.9 2,2v1h-2V5H5v10h1V17z"/>
+</vector>

app/src/main/res/drawable/ic_menu_message_delete_forever.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#fff"
+        android:pathData="M14.12,10.47L12,12.59l-2.13,-2.12 -1.41,1.41L10.59,14l-2.12,2.12 1.41,1.41L12,15.41l2.12,2.12 1.41,-1.41L13.41,14l2.12,-2.12zM15.5,4l-1,-1h-5l-1,1H5v2h14V4zM6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2V7H6v12zM8,9h8v10H8V9z" />
+</vector>

app/src/main/res/drawable/ic_menu_message_restore.xml

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#fff"
+        android:pathData="M15.5,4l-1,-1h-5l-1,1L5,4v2h14L19,4zM6,19c0,1.1 0.9,2 2,2h8c1.1,0 2,-0.9 2,-2L18,7L6,7v12zM8,14L8,9h8v10L8,19v-5zM10,18h4v-4h2l-4,-4 -4,4h2z" />
+</vector>

app/src/main/res/drawable/ic_notifications_off.xml

@@ -0,0 +1,5 @@
+<vector android:height="17dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="17dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M20,18.69L7.84,6.14 5.27,3.49 4,4.76l2.8,2.8v0.01c-0.52,0.99 -0.8,2.16 -0.8,3.42v5l-2,2v1h13.73l2,2L21,19.72l-1,-1.03zM12,22c1.11,0 2,-0.89 2,-2h-4c0,1.11 0.89,2 2,2zM18,14.68L18,11c0,-3.08 -1.64,-5.64 -4.5,-6.32L13.5,4c0,-0.83 -0.67,-1.5 -1.5,-1.5s-1.5,0.67 -1.5,1.5v0.68c-0.15,0.03 -0.29,0.08 -0.42,0.12 -0.1,0.03 -0.2,0.07 -0.3,0.11h-0.01c-0.01,0 -0.01,0 -0.02,0.01 -0.23,0.09 -0.46,0.2 -0.68,0.31 0,0 -0.01,0 -0.01,0.01L18,14.68z"/>
+</vector>

app/src/main/res/layout/activity_main.xml

@@ -16,7 +16,7 @@
         <com.google.android.material.appbar.MaterialToolbar
             android:id="@+id/main_toolbar"
             android:layout_width="match_parent"
-            android:layout_height="?attr/actionBarSize" />
+            android:layout_height="wrap_content" />
     </com.google.android.material.appbar.AppBarLayout>
 
     <androidx.fragment.app.FragmentContainerView