Merge branch 'develop' into bugfix/classid-zero

Bump com.android.tools.build:gradle from 8.3.2 to 8.4.0 (#2539 )
Bump androidx.fragment:fragment-ktx from 1.6.2 to 1.7.0 (#2538 )
2024-05-05 10:46:47 +02:00 · 2024-05-05 08:27:41 +00:00 · 2024-05-05 08:27:28 +00:00 · 2024-05-05 08:27:10 +00:00 · 2024-05-05 08:26:55 +00:00 · 2024-05-05 08:26:29 +00:00
127 changed files with 2561 additions and 833 deletions
--- a/.circleci/config.yml
+++ b/.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
--- a/.github/workflows/deploy-store.yml
+++ b/.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
--- a/.github/workflows/deploy-test.yml
+++ b/.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\"#.${GITHUB_HEAD_REF//[-.\/]/_}\"#" app/src/debug/agconnect-services.json
+          sed -i -e "s#.dev\"#.${GITHUB_HEAD_REF//[-.\/]/_}\"#" app/google-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:
--- a/.gitignore
+++ b/.gitignore
@ -117,12 +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
--- a/.travis.yml
+++ b/.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:
--- a/app/build.gradle
+++ b/app/build.gradle
@ -27,15 +27,12 @@ android {
        testApplicationId "io.github.tests.wulkanowy"
        minSdkVersion 21
        targetSdkVersion 34
-        versionCode 156
-        versionName "2.5.7"
+        versionCode 161
+        versionName "2.6.1"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

        resValue "string", "app_name", "Wulkanowy"
-        manifestPlaceholders = [
-            firebase_enabled: project.hasProperty("enableFirebase"),
-            admob_project_id: ""
-        ]
+        manifestPlaceholders = [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"'
        }
@ -164,8 +160,8 @@ play {
    defaultToAppBundles = false
    track = 'production'
    releaseStatus = ReleaseStatus.IN_PROGRESS
-    userFraction = 0.99d
-    updatePriority = 3
+    userFraction = 0.25d
+    updatePriority = 1
    enabled.set(false)
 }

@ -195,23 +191,23 @@ ext {
 }

 dependencies {
-    implementation 'io.github.wulkanowy:sdk:2.5.7'
+    implementation 'io.github.wulkanowy:sdk:2.6.0'

    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.0.4'

    implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.6.3"
    implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:$coroutines"

-    implementation 'androidx.core:core-ktx:1.12.0'
+    implementation 'androidx.core:core-ktx:1.13.1'
    implementation 'androidx.core:core-splashscreen:1.0.1'
-    implementation "androidx.activity:activity-ktx:1.8.2"
+    implementation "androidx.activity:activity-ktx:1.9.0"
    implementation "androidx.appcompat:appcompat:1.6.1"
-    implementation "androidx.fragment:fragment-ktx:1.6.2"
+    implementation "androidx.fragment:fragment-ktx:1.7.0"
    implementation "androidx.annotation:annotation:1.7.1"

    implementation "androidx.preference:preference-ktx:1.2.1"
    implementation "androidx.recyclerview:recyclerview:1.3.2"
-    implementation "androidx.viewpager2:viewpager2:1.1.0-beta02"
+    implementation "androidx.viewpager2:viewpager2:1.1.0-rc01"
    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.1.0"
    implementation "androidx.constraintlayout:constraintlayout:2.1.4"
    implementation "androidx.coordinatorlayout:coordinatorlayout:1.2.0"
@ -237,7 +233,7 @@ dependencies {
    implementation 'com.github.ncapdevi:FragNav:3.3.0'
    implementation "com.github.YarikSOffice:lingver:1.3.0"

-    implementation 'com.squareup.retrofit2:retrofit:2.9.0'
+    implementation 'com.squareup.retrofit2:retrofit:2.11.0'
    implementation "com.jakewharton.retrofit:retrofit2-kotlinx-serialization-converter:1.0.0"
    implementation "com.squareup.okhttp3:logging-interceptor:4.12.0"
    implementation "com.squareup.okhttp3:okhttp-urlconnection:4.12.0"
@ -250,9 +246,9 @@ dependencies {
    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'
+    implementation 'org.apache.commons:commons-text:1.12.0'

-    playImplementation platform('com.google.firebase:firebase-bom:32.7.3')
+    playImplementation platform('com.google.firebase:firebase-bom:33.0.0')
    playImplementation 'com.google.firebase:firebase-analytics'
    playImplementation 'com.google.firebase:firebase-messaging'
    playImplementation 'com.google.firebase:firebase-crashlytics:'
@ -278,7 +274,7 @@ dependencies {
    testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$coroutines"
    testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"

-    testImplementation 'org.robolectric:robolectric:4.11.1'
+    testImplementation 'org.robolectric:robolectric:4.12.1'
    testImplementation "androidx.test:runner:1.5.2"
    testImplementation "androidx.test.ext:junit:1.1.5"
    testImplementation "androidx.test:core:1.5.0"
--- a/app/src/debug/google-services.json
+++ b/app/src/debug/google-services.json
@ -36,6 +36,37 @@
          "status": 2
        }
      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:1091101852179:android:b558a25f65d088b1",
+        "android_client_info": {
+          "package_name": "io.github.wulkanowy"
+        }
+      },
+      "oauth_client": [
+        {
+          "client_id": "",
+          "client_type": 3
+        }
+      ],
+      "api_key": [
+        {
+          "current_key": ""
+        }
+      ],
+      "services": {
+        "analytics_service": {
+          "status": 1
+        },
+        "appinvite_service": {
+          "status": 1,
+          "other_platform_oauth_client": []
+        },
+        "ads_service": {
+          "status": 2
+        }
+      }
    }
  ],
  "configuration_version": "1"
--- a/app/play-publish-lint.sh
+++ b/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
--- a/app/src/debug/agconnect-services.json
+++ b/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"
-      }
-    }
-  ]
-}
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@ -51,7 +51,7 @@
            android:exported="true"
            android:screenOrientation="portrait"
            android:theme="@style/WulkanowyTheme.SplashScreen"
-            tools:ignore="LockedOrientationActivity">
+            tools:ignore="DiscouragedApi,LockedOrientationActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
@ -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" />
--- a/app/src/main/java/io/github/wulkanowy/data/Resource.kt
+++ b/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> {
-
-    open class Loading<T> : Resource<T>()
+sealed interface Resource<out 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 {
-    it.mapData(block)
+inline fun <T, U> Flow<Resource<T>>.mapResourceData(crossinline block: suspend (T) -> U) = map {
+    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(
-    mutex: Mutex = Mutex(),
-    showSavedOnLoading: Boolean = true,
-    crossinline isResultEmpty: (ResultType) -> Boolean,
-    crossinline query: () -> Flow<ResultType>,
-    crossinline fetch: suspend (ResultType) -> RequestType,
-    crossinline saveFetchResult: suspend (old: ResultType, new: RequestType) -> Unit,
-    crossinline onFetchFailed: (Throwable) -> Unit = { },
-    crossinline shouldFetch: (ResultType) -> Boolean = { true },
-    crossinline filterResult: (ResultType) -> ResultType = { it }
-) = flow {
-    emit(Resource.Loading())
+// Can cause excessive amounts of `Resource.Intermediate` to be emitted. Unless that is desired,
+// use `debounceIntermediates` to alleviate this behavior.
+inline fun <reified T> combineResourceFlows(flows: Iterable<Flow<Resource<T>>>): Flow<Resource<List<T>>> =
+    combine(flows) { items ->
+        var isIntermediate = false
+        val data = mutableListOf<T>()
+        for (item in items) {
+            when (item) {
+                is Resource.Success -> data.add(item.data)
+                is Resource.Intermediate -> {
+                    isIntermediate = true
+                    data.add(item.data)
+                }

-    val data = query().first()
-    emitAll(if (shouldFetch(data)) {
-        val filteredResult = filterResult(data)
-
-        if (showSavedOnLoading && !isResultEmpty(filteredResult)) {
-            emit(Resource.Intermediate(filteredResult))
+                is Resource.Loading -> return@combine Resource.Loading()
+                is Resource.Error -> continue
+            }
        }
-
-        try {
-            val newData = fetch(data)
-            mutex.withLock { saveFetchResult(query().first(), newData) }
-            query().map { Resource.Success(filterResult(it)) }
-        } catch (throwable: Throwable) {
-            onFetchFailed(throwable)
-            flowOf(Resource.Error(throwable))
+        if (data.isEmpty()) {
+            // All items have to be errors for this to happen, so just return the first one.
+            // mapData is functionally useless and exists only to satisfy the type checker
+            items.first().mapData { listOf(it) }
+        } else if (isIntermediate) {
+            Resource.Intermediate(data)
+        } else {
+            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: (T) -> Boolean,
-    crossinline query: () -> Flow<ResultType>,
-    crossinline fetch: suspend (ResultType) -> RequestType,
-    crossinline saveFetchResult: suspend (old: ResultType, new: RequestType) -> Unit,
-    crossinline onFetchFailed: (Throwable) -> Unit = { },
-    crossinline shouldFetch: (ResultType) -> Boolean = { true },
-    crossinline mapResult: (ResultType) -> T,
+    crossinline isResultEmpty: (OutputType) -> Boolean,
+    crossinline query: () -> Flow<DatabaseType>,
+    crossinline fetch: suspend () -> ApiType,
+    crossinline saveFetchResult: suspend (old: DatabaseType, new: ApiType) -> Unit,
+    crossinline shouldFetch: (DatabaseType) -> Boolean = { true },
+    crossinline mapResult: (DatabaseType) -> OutputType,
 ) = flow {
    emit(Resource.Loading())

    val data = query().first()
-    emitAll(if (shouldFetch(data)) {
-        val mappedResult = mapResult(data)
+    if (shouldFetch(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)
-            flowOf(Resource.Error(throwable))
+            emit(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) }
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/SchoolDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/SchoolDao.kt
@ -3,6 +3,7 @@ package io.github.wulkanowy.data.db.dao
 import androidx.room.Dao
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.School
+import io.github.wulkanowy.data.db.entities.Student
 import kotlinx.coroutines.flow.Flow
 import javax.inject.Singleton

@ -11,5 +12,16 @@ import javax.inject.Singleton
 interface SchoolDao : BaseDao<School> {

    @Query("SELECT * FROM School WHERE student_id = :studentId AND class_id = :classId")
-    fun load(studentId: Int, classId: Int): Flow<School?>
+    fun loadWithClassId(studentId: Int, classId: Int): Flow<School?>
+
+    @Query("SELECT * FROM School WHERE student_id = :studentId")
+    fun loadNoClassId(studentId: Int): Flow<School?>
+
+    fun load(student: Student): Flow<School?> {
+        return if (student.isEduOne == true) {
+            loadNoClassId(student.studentId)
+        } else {
+            loadWithClassId(student.studentId, student.classId)
+        }
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/SemesterDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/SemesterDao.kt
@ -5,6 +5,7 @@ import androidx.room.Insert
 import androidx.room.OnConflictStrategy
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Student
 import javax.inject.Singleton

@Singleton
@ -14,6 +15,17 @@ interface SemesterDao : BaseDao<Semester> {
    @Insert(onConflict = OnConflictStrategy.IGNORE)
    suspend fun insertSemesters(items: List<Semester>): List<Long>

-    @Query("SELECT * FROM Semesters WHERE (student_id = :studentId AND class_id = :classId) OR (student_id = :studentId AND class_id = 0)")
-    suspend fun loadAll(studentId: Int, classId: Int): List<Semester>
+    @Query("SELECT * FROM Semesters WHERE (student_id = :studentId AND class_id = :classId)")
+    suspend fun loadAllWithClassId(studentId: Int, classId: Int): List<Semester>
+
+    @Query("SELECT * FROM Semesters WHERE student_id = :studentId")
+    suspend fun loadAllNoClassId(studentId: Int): List<Semester>
+
+    suspend fun loadAll(student: Student): List<Semester> {
+        return if (student.isEduOne == true) {
+            loadAllNoClassId(student.studentId)
+        } else {
+            loadAllWithClassId(student.studentId, student.classId)
+        }
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/StudentDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/StudentDao.kt
@ -47,13 +47,9 @@ abstract class StudentDao {
    abstract suspend fun loadAll(): List<Student>

    @Transaction
-    @Query("SELECT * FROM Students JOIN Semesters ON (Students.student_id = Semesters.student_id AND Students.class_id = Semesters.class_id) OR (Students.student_id = Semesters.student_id AND Semesters.class_id = 0)")
+    @Query("SELECT * FROM Students JOIN Semesters ON (Students.student_id = Semesters.student_id AND Students.class_id = Semesters.class_id)")
    abstract suspend fun loadStudentsWithSemesters(): Map<Student, List<Semester>>

-    @Transaction
-    @Query("SELECT * FROM Students JOIN Semesters ON (Students.student_id = Semesters.student_id AND Students.class_id = Semesters.class_id) OR (Students.student_id = Semesters.student_id AND Semesters.class_id = 0) WHERE Students.id = :id")
-    abstract suspend fun loadStudentWithSemestersById(id: Long): Map<Student, List<Semester>>
-
    @Query("UPDATE Students SET is_current = 1 WHERE id = :id")
    abstract suspend fun updateCurrent(id: Long)

--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/TeacherDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/TeacherDao.kt
@ -2,6 +2,7 @@ package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
 import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.Teacher
 import kotlinx.coroutines.flow.Flow
 import javax.inject.Singleton
@ -11,5 +12,16 @@ import javax.inject.Singleton
 interface TeacherDao : BaseDao<Teacher> {

    @Query("SELECT * FROM Teachers WHERE student_id = :studentId AND class_id = :classId")
-    fun loadAll(studentId: Int, classId: Int): Flow<List<Teacher>>
+    fun loadAllWithClassId(studentId: Int, classId: Int): Flow<List<Teacher>>
+
+    @Query("SELECT * FROM Teachers WHERE student_id = :studentId")
+    fun loadAllNoClassId(studentId: Int): Flow<List<Teacher>>
+
+    fun loadAll(student: Student): Flow<List<Teacher>> {
+        return if (student.isEduOne == true) {
+            loadAllNoClassId(student.studentId)
+        } else {
+            loadAllWithClassId(student.studentId, student.classId)
+        }
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/db/entities/AdminMessage.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/entities/AdminMessage.kt
@ -4,6 +4,8 @@ import androidx.room.ColumnInfo
 import androidx.room.Entity
 import androidx.room.PrimaryKey
 import io.github.wulkanowy.data.enums.MessageType
+import io.github.wulkanowy.data.serializers.SafeMessageTypeEnumListSerializer
+import kotlinx.serialization.SerialName
 import kotlinx.serialization.Serializable

@Serializable
@ -34,6 +36,8 @@ data class AdminMessage(

    val priority: String,

+    @SerialName("messageTypes")
+    @Serializable(with = SafeMessageTypeEnumListSerializer::class)
    @ColumnInfo(name = "types", defaultValue = "[]")
    val types: List<MessageType> = emptyList(),

--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration63.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration63.kt
@ -6,6 +6,15 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 class Migration63 : AutoMigrationSpec {

    override fun onPostMigrate(db: SupportSQLiteDatabase) {
-        db.execSQL("UPDATE Students SET is_edu_one = NULL WHERE is_edu_one = 0")
+        db.execSQL("DROP TABLE IF EXISTS `Semesters`")
+        db.execSQL("DROP TABLE IF EXISTS `School`")
+        db.execSQL("DROP TABLE IF EXISTS `Teachers`")
+
+        db.execSQL("CREATE TABLE IF NOT EXISTS `Semesters` (`student_id` INTEGER NOT NULL, `diary_id` INTEGER NOT NULL, `kindergarten_diary_id` INTEGER NOT NULL DEFAULT 0, `diary_name` TEXT NOT NULL, `school_year` INTEGER NOT NULL, `semester_id` INTEGER NOT NULL, `semester_name` INTEGER NOT NULL, `start` INTEGER NOT NULL, `end` INTEGER NOT NULL, `class_id` INTEGER NOT NULL, `unit_id` INTEGER NOT NULL, `id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, `is_current` INTEGER NOT NULL)")
+        db.execSQL("CREATE UNIQUE INDEX IF NOT EXISTS `index_Semesters_student_id_diary_id_kindergarten_diary_id_semester_id` ON `Semesters` (`student_id`, `diary_id`, `kindergarten_diary_id`, `semester_id`)")
+        db.execSQL("CREATE TABLE IF NOT EXISTS `School` (`student_id` INTEGER NOT NULL, `class_id` INTEGER NOT NULL, `name` TEXT NOT NULL, `address` TEXT NOT NULL, `contact` TEXT NOT NULL, `headmaster` TEXT NOT NULL, `pedagogue` TEXT NOT NULL, `id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL)")
+        db.execSQL("CREATE TABLE IF NOT EXISTS `Teachers` (`student_id` INTEGER NOT NULL, `class_id` INTEGER NOT NULL, `subject` TEXT NOT NULL, `name` TEXT NOT NULL, `short_name` TEXT NOT NULL, `id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL)")
+
+        db.execSQL("UPDATE Students SET is_edu_one = NULL")
    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/enums/AttendanceCalculatorSortingMode.kt
+++ b/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
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/enums/MessageType.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/enums/MessageType.kt
@ -4,6 +4,8 @@ enum class MessageType {
    GENERAL_MESSAGE,
    DASHBOARD_MESSAGE,
    LOGIN_MESSAGE,
+    LOGIN_STUDENT_SELECT_MESSAGE,
+    LOGIN_SYMBOL_MESSAGE,
    PASS_RESET_MESSAGE,
    ERROR_OVERRIDE,
 }
--- a/app/src/main/java/io/github/wulkanowy/data/enums/ShowAdditionalLessonsMode.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/enums/ShowAdditionalLessonsMode.kt
@ -0,0 +1,11 @@
+package io.github.wulkanowy.data.enums
+
+enum class ShowAdditionalLessonsMode(val value: String) {
+    NONE("none"),
+    INLINE("inline"),
+    BELOW("below");
+
+    companion object {
+        fun getByValue(value: String) = entries.find { it.value == value } ?: INLINE
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/exceptions/NoCurrentStudentException.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/exceptions/NoCurrentStudentException.kt
--- a/app/src/main/java/io/github/wulkanowy/data/exceptions/NoSuchStudentException.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/exceptions/NoSuchStudentException.kt
@ -0,0 +1,4 @@
+package io.github.wulkanowy.data.exceptions
+
+class NoSuchStudentException(id: Long) :
+    Exception("There is no student with id $id in database")
--- a/app/src/main/java/io/github/wulkanowy/data/pojos/AttendanceData.kt
+++ b/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
+}
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/AdminMessageRepository.kt
+++ b/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 }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/LuckyNumberRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/LuckyNumberRepository.kt
@ -6,6 +6,8 @@ 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.ui.modules.luckynumberwidget.LuckyNumberWidgetProvider
+import io.github.wulkanowy.utils.AppWidgetUpdater
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.sync.Mutex
@ -18,6 +20,7 @@ import javax.inject.Singleton
 class LuckyNumberRepository @Inject constructor(
    private val luckyNumberDb: LuckyNumberDao,
    private val wulkanowySdkFactory: WulkanowySdkFactory,
+    private val appWidgetUpdater: AppWidgetUpdater,
 ) {

    private val saveFetchResultMutex = Mutex()
@ -26,6 +29,7 @@ class LuckyNumberRepository @Inject constructor(
        student: Student,
        forceRefresh: Boolean,
        notify: Boolean = false,
+        isFromAppWidget: Boolean = false
    ) = networkBoundResource(
        mutex = saveFetchResultMutex,
        isResultEmpty = { it == null },
@ -44,6 +48,9 @@ class LuckyNumberRepository @Inject constructor(
                    oldItems = listOfNotNull(oldLuckyNumber),
                    newItems = listOf(newLuckyNumber.apply { if (notify) isNotified = false }),
                )
+                if (!isFromAppWidget) {
+                    appWidgetUpdater.updateAllAppWidgetsByProvider(LuckyNumberWidgetProvider::class)
+                }
            }
        }
    )
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/MessageRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/MessageRepository.kt
@ -122,7 +122,7 @@ class MessageRepository @Inject constructor(
        fetch = {
            wulkanowySdkFactory.create(student)
                .getMessageDetails(
-                    messageKey = it!!.message.messageGlobalKey,
+                    messageKey = message.messageGlobalKey,
                    markAsRead = message.unread && markAsRead,
                )
        },
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/PreferencesRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/PreferencesRepository.kt
@ -10,9 +10,11 @@ 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
+import io.github.wulkanowy.data.enums.ShowAdditionalLessonsMode
 import io.github.wulkanowy.data.enums.TimetableGapsMode
 import io.github.wulkanowy.data.enums.TimetableMode
 import io.github.wulkanowy.ui.modules.dashboard.DashboardItem
@ -41,6 +43,27 @@ 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,
@ -191,6 +214,12 @@ class PreferencesRepository @Inject constructor(
            )
        )

+    val showAdditionalLessonsInPlan: ShowAdditionalLessonsMode
+        get() = getString(
+            R.string.pref_key_timetable_show_additional_lessons,
+            R.string.pref_default_timetable_show_additional_lessons
+        ).let { ShowAdditionalLessonsMode.getByValue(it) }
+
    val gradeSortingMode: GradeSortingMode
        get() = GradeSortingMode.getByValue(
            getString(
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolRepository.kt
@ -36,7 +36,7 @@ class SchoolRepository @Inject constructor(
            )
            it == null || forceRefresh || isExpired
        },
-        query = { schoolDb.load(semester.studentId, semester.classId) },
+        query = { schoolDb.load(student) },
        fetch = {
            wulkanowySdkFactory.create(student, semester)
                .getSchool()
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/SemesterRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/SemesterRepository.kt
@ -27,11 +27,11 @@ class SemesterRepository @Inject constructor(
        forceRefresh: Boolean = false,
        refreshOnNoCurrent: Boolean = false
    ) = withContext(dispatchers.io) {
-        val semesters = semesterDb.loadAll(student.studentId, student.classId)
+        val semesters = semesterDb.loadAll(student)

        if (isShouldFetch(student, semesters, forceRefresh, refreshOnNoCurrent)) {
            refreshSemesters(student)
-            semesterDb.loadAll(student.studentId, student.classId)
+            semesterDb.loadAll(student)
        } else semesters
    }

@ -69,7 +69,7 @@ class SemesterRepository @Inject constructor(
            return
        }

-        val old = semesterDb.loadAll(student.studentId, student.classId)
+        val old = semesterDb.loadAll(student)
        semesterDb.removeOldAndSaveNew(
            oldItems = old uniqueSubtract new,
            newItems = new uniqueSubtract old,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/StudentRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/StudentRepository.kt
@ -12,6 +12,7 @@ import io.github.wulkanowy.data.db.entities.StudentName
 import io.github.wulkanowy.data.db.entities.StudentNickAndAvatar
 import io.github.wulkanowy.data.db.entities.StudentWithSemesters
 import io.github.wulkanowy.data.exceptions.NoCurrentStudentException
+import io.github.wulkanowy.data.exceptions.NoSuchStudentException
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.mappers.mapToPojo
 import io.github.wulkanowy.data.pojos.RegisterUser
@ -65,7 +66,8 @@ class StudentRepository @Inject constructor(
        .mapToPojo(password)
        .also { it.logErrors() }

-    suspend fun getSavedStudents(decryptPass: Boolean = true): List<StudentWithSemesters> {
+    @Deprecated("Semesters are not synced within this method and students with empty semesters are not returned")
+    suspend fun getSavedStudentsWithSemesters(decryptPass: Boolean = true): List<StudentWithSemesters> {
        return studentDb.loadStudentsWithSemesters().map { (student, semesters) ->
            StudentWithSemesters(
                student = student.apply {
@ -80,22 +82,25 @@ class StudentRepository @Inject constructor(
        }
    }

-    suspend fun getSavedStudentById(id: Long, decryptPass: Boolean = true): StudentWithSemesters? =
-        studentDb.loadStudentWithSemestersById(id).let { res ->
-            StudentWithSemesters(
-                student = res.keys.firstOrNull() ?: return null,
-                semesters = res.values.first(),
-            )
-        }.apply {
-            if (decryptPass && Sdk.Mode.valueOf(student.loginMode) != Sdk.Mode.HEBE) {
-                student.password = withContext(dispatchers.io) {
+    suspend fun getSavedStudents(decryptPass: Boolean = true): List<Student> {
+        val students = studentDb.loadAll()
+        if (!decryptPass) return students
+
+        return students.map { student ->
+            if (Sdk.Mode.valueOf(student.loginMode) == Sdk.Mode.HEBE) {
+                return@map student
+            }
+
+            student.apply {
+                password = withContext(dispatchers.io) {
                    scrambler.decrypt(student.password)
                }
            }
        }
+    }

    suspend fun getStudentById(id: Long, decryptPass: Boolean = true): Student {
-        val student = studentDb.loadById(id) ?: throw NoCurrentStudentException()
+        val student = studentDb.loadById(id) ?: throw NoSuchStudentException(id)

        if (decryptPass && Sdk.Mode.valueOf(student.loginMode) != Sdk.Mode.HEBE) {
            student.password = withContext(dispatchers.io) {
@ -123,7 +128,7 @@ class StudentRepository @Inject constructor(
            return
        }

-        val currentStudentSemesters = semesterDb.loadAll(student.studentId, student.classId)
+        val currentStudentSemesters = semesterDb.loadAll(student)
        if (currentStudentSemesters.isEmpty()) {
            Timber.d("Check isAuthorized: apply empty semesters workaround")
            semesterDb.insertSemesters(
@ -181,8 +186,8 @@ class StudentRepository @Inject constructor(
        }
    }

-    suspend fun switchStudent(studentWithSemesters: StudentWithSemesters) {
-        studentDb.switchCurrent(studentWithSemesters.student.id)
+    suspend fun switchStudent(student: Student) {
+        studentDb.switchCurrent(student.id)
    }

    suspend fun logoutStudent(student: Student) = studentDb.delete(student)
@ -190,8 +195,8 @@ class StudentRepository @Inject constructor(
    suspend fun updateStudentNickAndAvatar(studentNickAndAvatar: StudentNickAndAvatar) =
        studentDb.update(studentNickAndAvatar)

-    suspend fun isOneUniqueStudent() = getSavedStudents(false)
-        .distinctBy { it.student.studentName }.size == 1
+    suspend fun isOneUniqueStudent() = studentDb.loadAll()
+        .distinctBy { it.studentName }.size == 1

    suspend fun authorizePermission(student: Student, semester: Semester, pesel: String) =
        wulkanowySdkFactory.create(student, semester)
@ -209,7 +214,7 @@ class StudentRepository @Inject constructor(

        studentDb.update(studentName)
        semesterDb.removeOldAndSaveNew(
-            oldItems = semesterDb.loadAll(student.studentId, semester.classId),
+            oldItems = semesterDb.loadAll(student),
            newItems = newCurrentApiStudent.semesters.mapToEntities(newCurrentApiStudent.studentId)
        )
    }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/TeacherRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/TeacherRepository.kt
@ -35,7 +35,7 @@ class TeacherRepository @Inject constructor(
            val isExpired = refreshHelper.shouldBeRefreshed(getRefreshKey(cacheKey, semester))
            it.isEmpty() || forceRefresh || isExpired
        },
-        query = { teacherDb.loadAll(semester.studentId, semester.classId) },
+        query = { teacherDb.loadAll(student) },
        fetch = {
            wulkanowySdkFactory.create(student, semester)
                .getTeachers()
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/TimetableRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/TimetableRepository.kt
@ -13,6 +13,8 @@ import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
 import io.github.wulkanowy.data.pojos.TimetableFull
 import io.github.wulkanowy.services.alarm.TimetableNotificationSchedulerHelper
+import io.github.wulkanowy.ui.modules.timetablewidget.TimetableWidgetProvider
+import io.github.wulkanowy.utils.AppWidgetUpdater
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
 import io.github.wulkanowy.utils.monday
@ -26,6 +28,7 @@ import java.time.LocalDate
 import javax.inject.Inject
 import javax.inject.Singleton

+
@Singleton
 class TimetableRepository @Inject constructor(
    private val timetableDb: TimetableDao,
@ -34,6 +37,7 @@ class TimetableRepository @Inject constructor(
    private val wulkanowySdkFactory: WulkanowySdkFactory,
    private val schedulerHelper: TimetableNotificationSchedulerHelper,
    private val refreshHelper: AutoRefreshHelper,
+    private val appWidgetUpdater: AppWidgetUpdater,
 ) {

    private val saveFetchResultMutex = Mutex()
@ -52,7 +56,8 @@ class TimetableRepository @Inject constructor(
        forceRefresh: Boolean,
        refreshAdditional: Boolean = false,
        notify: Boolean = false,
-        timetableType: TimetableType = TimetableType.NORMAL
+        timetableType: TimetableType = TimetableType.NORMAL,
+        isFromAppWidget: Boolean = false
    ) = networkBoundResource(
        mutex = saveFetchResultMutex,
        isResultEmpty = {
@ -83,6 +88,9 @@ class TimetableRepository @Inject constructor(
            refreshDayHeaders(timetableOld.headers, timetableNew.headers)

            refreshHelper.updateLastRefreshTimestamp(getRefreshKey(cacheKey, semester, start, end))
+            if (!isFromAppWidget) {
+                appWidgetUpdater.updateAllAppWidgetsByProvider(TimetableWidgetProvider::class)
+            }
        },
        filterResult = { (timetable, additional, headers) ->
            TimetableFull(
--- a/app/src/main/java/io/github/wulkanowy/data/serializers/SafeMessageTypeEnumListSerializer.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/serializers/SafeMessageTypeEnumListSerializer.kt
@ -0,0 +1,27 @@
+package io.github.wulkanowy.data.serializers
+
+import io.github.wulkanowy.data.enums.MessageType
+import kotlinx.serialization.ExperimentalSerializationApi
+import kotlinx.serialization.KSerializer
+import kotlinx.serialization.builtins.ListSerializer
+import kotlinx.serialization.builtins.serializer
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
+
+@OptIn(ExperimentalSerializationApi::class)
+object SafeMessageTypeEnumListSerializer : KSerializer<List<MessageType>> {
+
+    private val serializer = ListSerializer(String.serializer())
+
+    override val descriptor = serializer.descriptor
+
+    override fun serialize(encoder: Encoder, value: List<MessageType>) {
+        encoder.encodeNotNullMark()
+        serializer.serialize(encoder, value.map { it.name })
+    }
+
+    override fun deserialize(decoder: Decoder): List<MessageType> =
+        serializer.deserialize(decoder).mapNotNull { enumName ->
+            MessageType.entries.find { it.name == enumName }
+        }
+}
--- a/app/src/main/java/io/github/wulkanowy/domain/attendance/GetAttendanceCalculatorDataUseCase.kt
+++ b/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)
+}
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/account/AccountPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/account/AccountPresenter.kt
@ -33,7 +33,7 @@ class AccountPresenter @Inject constructor(
    }

    private fun loadData() {
-        resourceFlow { studentRepository.getSavedStudents(false) }
+        resourceFlow { studentRepository.getSavedStudentsWithSemesters(false) }
            .logResourceStatus("load account data")
            .onResourceSuccess { view?.updateData(createAccountItems(it)) }
            .onResourceError(errorHandler::dispatch)
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/account/accountdetails/AccountDetailsPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/account/accountdetails/AccountDetailsPresenter.kt
@ -1,9 +1,15 @@
 package io.github.wulkanowy.ui.modules.account.accountdetails

-import io.github.wulkanowy.data.*
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.StudentWithSemesters
+import io.github.wulkanowy.data.logResourceStatus
+import io.github.wulkanowy.data.onResourceError
+import io.github.wulkanowy.data.onResourceLoading
+import io.github.wulkanowy.data.onResourceNotLoading
+import io.github.wulkanowy.data.onResourceSuccess
+import io.github.wulkanowy.data.repositories.SemesterRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
+import io.github.wulkanowy.data.resourceFlow
 import io.github.wulkanowy.services.sync.SyncManager
 import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
@ -14,6 +20,7 @@ import javax.inject.Inject
 class AccountDetailsPresenter @Inject constructor(
    errorHandler: ErrorHandler,
    studentRepository: StudentRepository,
+    private val semeRepository: SemesterRepository,
    private val syncManager: SyncManager
 ) : BasePresenter<AccountDetailsView>(errorHandler, studentRepository) {

@ -46,7 +53,12 @@ class AccountDetailsPresenter @Inject constructor(
    }

    private fun loadData() {
-        resourceFlow { studentRepository.getSavedStudentById(studentId ?: -1) }
+        resourceFlow {
+            val student = studentRepository.getStudentById(studentId ?: -1)
+            val semesters = semeRepository.getSemesters(student)
+
+            StudentWithSemesters(student, semesters)
+        }
            .logResourceStatus("loading account details view")
            .onResourceLoading {
                view?.run {
@ -85,7 +97,7 @@ class AccountDetailsPresenter @Inject constructor(

        Timber.i("Select student ${studentWithSemesters!!.student.id}")

-        resourceFlow { studentRepository.switchStudent(studentWithSemesters!!) }
+        resourceFlow { studentRepository.switchStudent(studentWithSemesters!!.student) }
            .logResourceStatus("change student")
            .onResourceSuccess { view?.recreateMainView() }
            .onResourceNotLoading { view?.popViewToMain() }
@ -122,10 +134,12 @@ class AccountDetailsPresenter @Inject constructor(
                            syncManager.stopSyncWorker()
                            openClearLoginView()
                        }
+
                        studentWithSemesters?.student?.isCurrent == true -> {
                            Timber.i("Logout result: Logout student and switch to another")
                            recreateMainView()
                        }
+
                        else -> {
                            Timber.i("Logout result: Logout student")
                            recreateMainView()
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/account/accountquick/AccountQuickPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/account/accountquick/AccountQuickPresenter.kt
@ -1,8 +1,12 @@
 package io.github.wulkanowy.ui.modules.account.accountquick

-import io.github.wulkanowy.data.*
 import io.github.wulkanowy.data.db.entities.StudentWithSemesters
+import io.github.wulkanowy.data.logResourceStatus
+import io.github.wulkanowy.data.onResourceError
+import io.github.wulkanowy.data.onResourceNotLoading
+import io.github.wulkanowy.data.onResourceSuccess
 import io.github.wulkanowy.data.repositories.StudentRepository
+import io.github.wulkanowy.data.resourceFlow
 import io.github.wulkanowy.ui.base.BasePresenter
 import io.github.wulkanowy.ui.base.ErrorHandler
 import io.github.wulkanowy.ui.modules.account.AccountItem
@ -40,7 +44,7 @@ class AccountQuickPresenter @Inject constructor(
            return
        }

-        resourceFlow { studentRepository.switchStudent(studentWithSemesters) }
+        resourceFlow { studentRepository.switchStudent(studentWithSemesters.student) }
            .logResourceStatus("change student")
            .onResourceSuccess { view?.recreateMainView() }
            .onResourceNotLoading { view?.popView() }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendanceFragment.kt
+++ b/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)
    }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendancePresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendancePresenter.kt
@ -1,16 +1,36 @@
 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.flatResourceFlow
+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.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 io.github.wulkanowy.utils.capitalise
+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
@ -195,6 +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")

--- a/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/AttendanceView.kt
+++ b/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()
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/calculator/AttendanceCalculatorAdapter.kt
+++ b/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)
+}
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/calculator/AttendanceCalculatorFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/calculator/AttendanceCalculatorFragment.kt
@ -0,0 +1,133 @@
+package io.github.wulkanowy.ui.modules.attendance.calculator
+
+import android.os.Bundle
+import android.view.Menu
+import android.view.MenuInflater
+import android.view.MenuItem
+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.MainActivity
+import io.github.wulkanowy.ui.modules.main.MainView
+import io.github.wulkanowy.ui.modules.settings.appearance.AppearanceFragment
+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()
+
+    @Suppress("DEPRECATION")
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setHasOptionsMenu(true)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        binding = FragmentAttendanceCalculatorBinding.bind(view)
+        messageContainer = binding.attendanceCalculatorRecycler
+        presenter.onAttachView(this)
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
+        inflater.inflate(R.menu.action_menu_attendance_calculator, menu)
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        return if (item.itemId == R.id.attendance_calculator_menu_settings) presenter.onSettingsSelected()
+        else false
+    }
+
+    override fun openSettingsView() {
+        (activity as? MainActivity)?.pushView(AppearanceFragment.withFocusedPreference(getString(R.string.pref_key_attendance_target)))
+    }
+
+    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()
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/calculator/AttendanceCalculatorPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/calculator/AttendanceCalculatorPresenter.kt
@ -0,0 +1,94 @@
+package io.github.wulkanowy.ui.modules.attendance.calculator
+
+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.onResourceIntermediate
+import io.github.wulkanowy.data.onResourceNotLoading
+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)
+        }
+    }
+
+    fun onSettingsSelected(): Boolean {
+        view?.openSettingsView()
+        return true
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/calculator/AttendanceCalculatorView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/attendance/calculator/AttendanceCalculatorView.kt
@ -0,0 +1,31 @@
+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()
+
+    fun openSettingsView()
+}
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/auth/AuthPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/auth/AuthPresenter.kt
@ -27,8 +27,12 @@ class AuthPresenter @Inject constructor(

    private fun loadName() {
        presenterScope.launch {
-            runCatching { studentRepository.getCurrentStudent(false) }
-                .onSuccess { view?.showDescriptionWithName(it.studentName) }
+            runCatching {
+                studentRepository.getCurrentStudent(false)
+                    .studentName
+                    .replace(" ", "\u00A0")
+            }
+                .onSuccess { view?.showDescriptionWithName(it) }
                .onFailure { errorHandler.dispatch(it) }
        }
    }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectFragment.kt
@ -6,10 +6,12 @@ import androidx.core.os.bundleOf
 import androidx.core.view.isVisible
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
+import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.data.pojos.RegisterUser
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.databinding.FragmentLoginStudentSelectBinding
 import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.dashboard.viewholders.AdminMessageViewHolder
 import io.github.wulkanowy.ui.modules.login.LoginActivity
 import io.github.wulkanowy.ui.modules.login.LoginData
 import io.github.wulkanowy.ui.modules.login.support.LoginSupportDialog
@ -111,6 +113,19 @@ class LoginStudentSelectFragment :
        LoginSupportDialog.newInstance(supportInfo).show(childFragmentManager, "support_dialog")
    }

+    override fun showAdminMessage(adminMessage: AdminMessage?) {
+        AdminMessageViewHolder(
+            binding = binding.loginStudentSelectAdminMessage,
+            onAdminMessageDismissClickListener = presenter::onAdminMessageDismissed,
+            onAdminMessageClickListener = presenter::onAdminMessageSelected,
+        ).bind(adminMessage)
+        binding.loginStudentSelectAdminMessage.root.isVisible = adminMessage != null
+    }
+
+    override fun openInternetBrowser(url: String) {
+        requireContext().openInternetBrowser(url)
+    }
+
    override fun onDestroyView() {
        presenter.onDetachView()
        super.onDestroyView()
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectPresenter.kt
@ -2,16 +2,23 @@ package io.github.wulkanowy.ui.modules.login.studentselect

 import io.github.wulkanowy.data.Resource
 import io.github.wulkanowy.data.dataOrNull
+import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.data.db.entities.StudentWithSemesters
+import io.github.wulkanowy.data.enums.MessageType
+import io.github.wulkanowy.data.flatResourceFlow
 import io.github.wulkanowy.data.logResourceStatus
 import io.github.wulkanowy.data.mappers.mapToStudentWithSemesters
+import io.github.wulkanowy.data.onResourceData
+import io.github.wulkanowy.data.onResourceError
 import io.github.wulkanowy.data.pojos.RegisterStudent
 import io.github.wulkanowy.data.pojos.RegisterSymbol
 import io.github.wulkanowy.data.pojos.RegisterUnit
 import io.github.wulkanowy.data.pojos.RegisterUser
+import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.data.repositories.SchoolsRepository
 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.exception.StudentGraduateException
 import io.github.wulkanowy.sdk.scrapper.login.InvalidSymbolException
 import io.github.wulkanowy.services.sync.SyncManager
@ -33,6 +40,8 @@ class LoginStudentSelectPresenter @Inject constructor(
    private val syncManager: SyncManager,
    private val analytics: AnalyticsHelper,
    private val appInfo: AppInfo,
+    private val preferencesRepository: PreferencesRepository,
+    private val getAppropriateAdminMessageUseCase: GetAppropriateAdminMessageUseCase
 ) : BasePresenter<LoginStudentSelectView>(loginErrorHandler, studentRepository) {

    private var lastError: Throwable? = null
@ -65,12 +74,13 @@ class LoginStudentSelectPresenter @Inject constructor(
        this.loginData = loginData
        this.registerUser = registerUser
        loadData()
+        loadAdminMessage()
    }

    private fun loadData() {
        resetSelectedState()

-        resourceFlow { studentRepository.getSavedStudents(false) }.onEach {
+        resourceFlow { studentRepository.getSavedStudentsWithSemesters(false) }.onEach {
            students = it.dataOrNull.orEmpty()
            when (it) {
                is Resource.Loading -> Timber.d("Login student select students load started")
@ -88,7 +98,20 @@ class LoginStudentSelectPresenter @Inject constructor(
                    refreshItems()
                }
            }
-        }.launch()
+        }.launch("load_data")
+    }
+
+    private fun loadAdminMessage() {
+        flatResourceFlow {
+            getAppropriateAdminMessageUseCase(
+                scrapperBaseUrl = registerUser.scrapperBaseUrl.orEmpty(),
+                type = MessageType.LOGIN_STUDENT_SELECT_MESSAGE,
+            )
+        }
+            .logResourceStatus("load login admin message")
+            .onResourceData { view?.showAdminMessage(it) }
+            .onResourceError { view?.showAdminMessage(null) }
+            .launch("load_admin_message")
    }

    private fun getStudentsWithCurrentlyActiveSemesters(): List<LoginStudentSelectItem.Student> {
@ -341,4 +364,14 @@ class LoginStudentSelectPresenter @Inject constructor(
            )
        }
    }
+
+    fun onAdminMessageSelected(url: String?) {
+        url?.let { view?.openInternetBrowser(it) }
+    }
+
+    fun onAdminMessageDismissed(adminMessage: AdminMessage) {
+        preferencesRepository.dismissedAdminMessageIds += adminMessage.id
+
+        view?.showAdminMessage(null)
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/studentselect/LoginStudentSelectView.kt
@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.login.studentselect

+import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.ui.base.BaseView
 import io.github.wulkanowy.ui.modules.login.LoginData
 import io.github.wulkanowy.ui.modules.login.support.LoginSupportInfo
@ -25,4 +26,8 @@ interface LoginStudentSelectView : BaseView {
    fun openDiscordInvite()

    fun openEmail(supportInfo: LoginSupportInfo)
+
+    fun showAdminMessage(adminMessage: AdminMessage?)
+
+    fun openInternetBrowser(url: String)
 }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolFragment.kt
@ -9,13 +9,16 @@ import android.view.inputmethod.EditorInfo.IME_NULL
 import android.widget.ArrayAdapter
 import androidx.core.os.bundleOf
 import androidx.core.text.parseAsHtml
+import androidx.core.view.isVisible
 import androidx.core.widget.doOnTextChanged
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
+import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.data.pojos.RegisterUser
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.databinding.FragmentLoginSymbolBinding
 import io.github.wulkanowy.ui.base.BaseFragment
+import io.github.wulkanowy.ui.modules.dashboard.viewholders.AdminMessageViewHolder
 import io.github.wulkanowy.ui.modules.login.LoginActivity
 import io.github.wulkanowy.ui.modules.login.LoginData
 import io.github.wulkanowy.ui.modules.login.support.LoginSupportDialog
@ -179,4 +182,17 @@ class LoginSymbolFragment :
    override fun openSupportDialog(supportInfo: LoginSupportInfo) {
        LoginSupportDialog.newInstance(supportInfo).show(childFragmentManager, "support_dialog")
    }
+
+    override fun showAdminMessage(adminMessage: AdminMessage?) {
+        AdminMessageViewHolder(
+            binding = binding.loginSymbolAdminMessage,
+            onAdminMessageDismissClickListener = presenter::onAdminMessageDismissed,
+            onAdminMessageClickListener = presenter::onAdminMessageSelected,
+        ).bind(adminMessage)
+        binding.loginSymbolAdminMessage.root.isVisible = adminMessage != null
+    }
+
+    override fun openInternetBrowser(url: String) {
+        requireContext().openInternetBrowser(url)
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolPresenter.kt
@ -2,10 +2,18 @@ package io.github.wulkanowy.ui.modules.login.symbol

 import io.github.wulkanowy.data.Resource
 import io.github.wulkanowy.data.dataOrNull
+import io.github.wulkanowy.data.db.entities.AdminMessage
+import io.github.wulkanowy.data.enums.MessageType
+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.pojos.RegisterUser
+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.getNormalizedSymbol
 import io.github.wulkanowy.sdk.scrapper.login.InvalidSymbolException
 import io.github.wulkanowy.ui.base.BasePresenter
@ -21,7 +29,9 @@ import javax.inject.Inject
 class LoginSymbolPresenter @Inject constructor(
    studentRepository: StudentRepository,
    private val loginErrorHandler: LoginErrorHandler,
-    private val analytics: AnalyticsHelper
+    private val analytics: AnalyticsHelper,
+    private val preferencesRepository: PreferencesRepository,
+    private val getAppropriateAdminMessageUseCase: GetAppropriateAdminMessageUseCase,
 ) : BasePresenter<LoginSymbolView>(loginErrorHandler, studentRepository) {

    private var lastError: Throwable? = null
@ -43,6 +53,21 @@ class LoginSymbolPresenter @Inject constructor(
            clearAndFocusSymbol()
            showSoftKeyboard()
        }
+
+        loadAdminMessage()
+    }
+
+    private fun loadAdminMessage() {
+        flatResourceFlow {
+            getAppropriateAdminMessageUseCase(
+                scrapperBaseUrl = loginData.baseUrl,
+                type = MessageType.LOGIN_SYMBOL_MESSAGE,
+            )
+        }
+            .logResourceStatus("load login admin message")
+            .onResourceData { view?.showAdminMessage(it) }
+            .onResourceError { view?.showAdminMessage(null) }
+            .launch("load_admin_message")
    }

    fun onSymbolTextChanged() {
@ -166,4 +191,14 @@ class LoginSymbolPresenter @Inject constructor(
            )
        )
    }
+
+    fun onAdminMessageSelected(url: String?) {
+        url?.let { view?.openInternetBrowser(it) }
+    }
+
+    fun onAdminMessageDismissed(adminMessage: AdminMessage) {
+        preferencesRepository.dismissedAdminMessageIds += adminMessage.id
+
+        view?.showAdminMessage(null)
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/login/symbol/LoginSymbolView.kt
@ -1,5 +1,6 @@
 package io.github.wulkanowy.ui.modules.login.symbol

+import io.github.wulkanowy.data.db.entities.AdminMessage
 import io.github.wulkanowy.data.pojos.RegisterUser
 import io.github.wulkanowy.ui.base.BaseView
 import io.github.wulkanowy.ui.modules.login.LoginData
@ -44,4 +45,8 @@ interface LoginSymbolView : BaseView {
    fun openFaqPage()

    fun openSupportDialog(supportInfo: LoginSupportInfo)
+
+    fun showAdminMessage(adminMessage: AdminMessage?)
+
+    fun openInternetBrowser(url: String)
 }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/luckynumber/history/LuckyNumberHistoryAdapter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/luckynumber/history/LuckyNumberHistoryAdapter.kt
@ -33,4 +33,4 @@ class LuckyNumberHistoryAdapter @Inject constructor() :
    }

    class ItemViewHolder(val binding: ItemLuckyNumberHistoryBinding) : RecyclerView.ViewHolder(binding.root)
-}
+}
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetConfigurePresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetConfigurePresenter.kt
@ -35,7 +35,7 @@ class LuckyNumberWidgetConfigurePresenter @Inject constructor(
    }

    private fun loadData() {
-        resourceFlow { studentRepository.getSavedStudents(false) }.onEach {
+        resourceFlow { studentRepository.getSavedStudentsWithSemesters(false) }.onEach {
            when (it) {
                is Resource.Loading -> Timber.d("Lucky number widget configure students data load")
                is Resource.Success -> {
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetProvider.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/luckynumberwidget/LuckyNumberWidgetProvider.kt
@ -132,7 +132,7 @@ class LuckyNumberWidgetProvider : AppWidgetProvider() {
    private fun getLuckyNumber(studentId: Long, appWidgetId: Int) = runBlocking {
        try {
            val students = studentRepository.getSavedStudents()
-            val student = students.singleOrNull { it.student.id == studentId }?.student
+            val student = students.singleOrNull { it.id == studentId }
            val currentStudent = when {
                student != null -> student
                studentId != 0L && studentRepository.isCurrentStudentSet() -> {
@ -145,7 +145,11 @@ class LuckyNumberWidgetProvider : AppWidgetProvider() {
            }

            if (currentStudent != null) {
-                luckyNumberRepository.getLuckyNumber(currentStudent, forceRefresh = false)
+                luckyNumberRepository.getLuckyNumber(
+                    student = currentStudent,
+                    forceRefresh = false,
+                    isFromAppWidget = true
+                )
                    .toFirstResult()
                    .dataOrThrow
            } else null
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/main/MainPresenter.kt
@ -85,7 +85,7 @@ class MainPresenter @Inject constructor(
            return
        }

-        resourceFlow { studentRepository.getSavedStudents(false) }
+        resourceFlow { studentRepository.getSavedStudentsWithSemesters(false) }
            .logResourceStatus("load student avatar")
            .onResourceSuccess {
                studentsWitSemesters = it
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/settings/appearance/AppearanceFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/settings/appearance/AppearanceFragment.kt
@ -3,7 +3,9 @@ package io.github.wulkanowy.ui.modules.settings.appearance
 import android.content.SharedPreferences
 import android.os.Bundle
 import android.view.View
+import androidx.core.os.bundleOf
 import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SeekBarPreference
 import com.yariksoffice.lingver.Lingver
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
@ -29,13 +31,31 @@ class AppearanceFragment : PreferenceFragmentCompat(),

    override val titleStringId get() = R.string.pref_settings_appearance_title

+    companion object {
+        fun withFocusedPreference(key: String) = AppearanceFragment().apply {
+            arguments = bundleOf(FOCUSED_KEY to key)
+        }
+
+        private const val FOCUSED_KEY = "focusedKey"
+    }
+
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        presenter.onAttachView(this)
+        arguments?.getString(FOCUSED_KEY)?.let { scrollToPreference(it) }
    }

    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?) {
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
@ -7,20 +7,21 @@ import android.view.ViewGroup
 import android.widget.TextView
 import androidx.core.view.isVisible
 import androidx.recyclerview.widget.DiffUtil
-import androidx.recyclerview.widget.ListAdapter
 import androidx.recyclerview.widget.RecyclerView
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.db.entities.Timetable
 import io.github.wulkanowy.databinding.ItemTimetableBinding
 import io.github.wulkanowy.databinding.ItemTimetableEmptyBinding
+import io.github.wulkanowy.databinding.ItemTimetableMainAdditionalBinding
 import io.github.wulkanowy.databinding.ItemTimetableSmallBinding
+import io.github.wulkanowy.utils.SyncListAdapter
 import io.github.wulkanowy.utils.getPlural
 import io.github.wulkanowy.utils.getThemeAttrColor
 import io.github.wulkanowy.utils.toFormattedString
 import javax.inject.Inject

 class TimetableAdapter @Inject constructor() :
-    ListAdapter<TimetableItem, RecyclerView.ViewHolder>(differ) {
+    SyncListAdapter<TimetableItem, RecyclerView.ViewHolder>(Differ) {

    override fun getItemViewType(position: Int): Int = getItem(position).type.ordinal

@ -39,6 +40,10 @@ class TimetableAdapter @Inject constructor() :
            TimetableItemType.EMPTY -> EmptyViewHolder(
                ItemTimetableEmptyBinding.inflate(inflater, parent, false)
            )
+
+            TimetableItemType.ADDITIONAL -> AdditionalViewHolder(
+                ItemTimetableMainAdditionalBinding.inflate(inflater, parent, false)
+            )
        }
    }

@ -61,16 +66,30 @@ class TimetableAdapter @Inject constructor() :
                binding = holder.binding,
                item = getItem(position) as TimetableItem.Small,
            )
-
            is NormalViewHolder -> bindNormalView(
                binding = holder.binding,
                item = getItem(position) as TimetableItem.Normal,
            )
-
            is EmptyViewHolder -> bindEmptyView(
                binding = holder.binding,
                item = getItem(position) as TimetableItem.Empty,
            )
+
+            is AdditionalViewHolder -> bindAdditionalView(
+                binding = holder.binding,
+                item = getItem(position) as TimetableItem.Additional,
+            )
+        }
+    }
+
+    private fun bindAdditionalView(
+        binding: ItemTimetableMainAdditionalBinding,
+        item: TimetableItem.Additional
+    ) {
+        with(binding) {
+            timetableItemSubject.text = item.additional.subject
+            timetableItemTimeStart.text = item.additional.start.toFormattedString("HH:mm")
+            timetableItemTimeFinish.text = item.additional.end.toFormattedString("HH:mm")
        }
    }

@ -307,31 +326,32 @@ class TimetableAdapter @Inject constructor() :
    private class EmptyViewHolder(val binding: ItemTimetableEmptyBinding) :
        RecyclerView.ViewHolder(binding.root)

-    companion object {
-        private val differ = object : DiffUtil.ItemCallback<TimetableItem>() {
-            override fun areItemsTheSame(oldItem: TimetableItem, newItem: TimetableItem): Boolean =
-                when {
-                    oldItem is TimetableItem.Small && newItem is TimetableItem.Small -> {
-                        oldItem.lesson.start == newItem.lesson.start
-                    }
+    private class AdditionalViewHolder(val binding: ItemTimetableMainAdditionalBinding) :
+        RecyclerView.ViewHolder(binding.root)

-                    oldItem is TimetableItem.Normal && newItem is TimetableItem.Normal -> {
-                        oldItem.lesson.start == newItem.lesson.start
-                    }
-
-                    else -> oldItem == newItem
+    private object Differ : DiffUtil.ItemCallback<TimetableItem>() {
+        override fun areItemsTheSame(oldItem: TimetableItem, newItem: TimetableItem): Boolean =
+            when {
+                oldItem is TimetableItem.Small && newItem is TimetableItem.Small -> {
+                    oldItem.lesson.start == newItem.lesson.start
                }

-            override fun areContentsTheSame(oldItem: TimetableItem, newItem: TimetableItem) =
-                oldItem == newItem
+                oldItem is TimetableItem.Normal && newItem is TimetableItem.Normal -> {
+                    oldItem.lesson.start == newItem.lesson.start
+                }

-            override fun getChangePayload(oldItem: TimetableItem, newItem: TimetableItem): Any? {
-                return if (oldItem is TimetableItem.Normal && newItem is TimetableItem.Normal) {
-                    if (oldItem.lesson == newItem.lesson && oldItem.showGroupsInPlan == newItem.showGroupsInPlan && oldItem.timeLeft != newItem.timeLeft) {
-                        "time_left"
-                    } else super.getChangePayload(oldItem, newItem)
-                } else super.getChangePayload(oldItem, newItem)
+                else -> oldItem == newItem
            }
+
+        override fun areContentsTheSame(oldItem: TimetableItem, newItem: TimetableItem) =
+            oldItem == newItem
+
+        override fun getChangePayload(oldItem: TimetableItem, newItem: TimetableItem): Any? {
+            return if (oldItem is TimetableItem.Normal && newItem is TimetableItem.Normal) {
+                if (oldItem.lesson == newItem.lesson && oldItem.showGroupsInPlan == newItem.showGroupsInPlan && oldItem.timeLeft != newItem.timeLeft) {
+                    "time_left"
+                } else super.getChangePayload(oldItem, newItem)
+            } else super.getChangePayload(oldItem, newItem)
        }
    }
 }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableFragment.kt
@ -21,7 +21,11 @@ import io.github.wulkanowy.ui.modules.main.MainView
 import io.github.wulkanowy.ui.modules.timetable.additional.AdditionalLessonsFragment
 import io.github.wulkanowy.ui.modules.timetable.completed.CompletedLessonsFragment
 import io.github.wulkanowy.ui.widgets.DividerItemDecoration
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.dpToPx
+import io.github.wulkanowy.utils.firstSchoolDayInSchoolYear
+import io.github.wulkanowy.utils.getThemeAttrColor
+import io.github.wulkanowy.utils.lastSchoolDayInSchoolYear
+import io.github.wulkanowy.utils.openMaterialDatePicker
 import java.time.LocalDate
 import javax.inject.Inject

@ -104,8 +108,11 @@ class TimetableFragment : BaseFragment<FragmentTimetableBinding>(R.layout.fragme
        }
    }

-    override fun updateData(data: List<TimetableItem>) {
-        timetableAdapter.submitList(data)
+    override fun updateData(data: List<TimetableItem>, isDayChanged: Boolean) {
+        when {
+            isDayChanged -> timetableAdapter.recreate(data)
+            else -> timetableAdapter.submitList(data)
+        }
    }

    override fun clearData() {
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableItem.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableItem.kt
@ -1,6 +1,7 @@
 package io.github.wulkanowy.ui.modules.timetable

 import io.github.wulkanowy.data.db.entities.Timetable
+import io.github.wulkanowy.data.db.entities.TimetableAdditional
 import java.time.Duration

 sealed class TimetableItem(val type: TimetableItemType) {
@ -23,6 +24,10 @@ sealed class TimetableItem(val type: TimetableItemType) {
        val numFrom: Int,
        val numTo: Int
    ) : TimetableItem(TimetableItemType.EMPTY)
+
+    data class Additional(
+        val additional: TimetableAdditional,
+    ) : TimetableItem(TimetableItemType.ADDITIONAL)
 }

 data class TimeLeft(
@ -34,5 +39,6 @@ data class TimeLeft(
 enum class TimetableItemType {
    SMALL,
    NORMAL,
-    EMPTY
+    EMPTY,
+    ADDITIONAL,
 }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetablePresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetablePresenter.kt
@ -4,6 +4,9 @@ import android.os.Handler
 import android.os.Looper
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Timetable
+import io.github.wulkanowy.data.db.entities.TimetableAdditional
+import io.github.wulkanowy.data.enums.ShowAdditionalLessonsMode.BELOW
+import io.github.wulkanowy.data.enums.ShowAdditionalLessonsMode.NONE
 import io.github.wulkanowy.data.enums.TimetableGapsMode.BETWEEN_AND_BEFORE_LESSONS
 import io.github.wulkanowy.data.enums.TimetableGapsMode.NO_GAPS
 import io.github.wulkanowy.data.enums.TimetableMode
@ -14,6 +17,7 @@ import io.github.wulkanowy.data.onResourceError
 import io.github.wulkanowy.data.onResourceIntermediate
 import io.github.wulkanowy.data.onResourceNotLoading
 import io.github.wulkanowy.data.onResourceSuccess
+import io.github.wulkanowy.data.pojos.TimetableFull
 import io.github.wulkanowy.data.repositories.PreferencesRepository
 import io.github.wulkanowy.data.repositories.SemesterRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
@ -81,7 +85,7 @@ class TimetablePresenter @Inject constructor(
        } else currentDate?.previousSchoolDay

        reloadView(date ?: return)
-        loadData()
+        loadData(isDayChanged = true)
    }

    fun onNextDay() {
@ -90,7 +94,7 @@ class TimetablePresenter @Inject constructor(
        } else currentDate?.nextSchoolDay

        reloadView(date ?: return)
-        loadData()
+        loadData(isDayChanged = true)
    }

    fun onPickDate() {
@ -104,7 +108,7 @@ class TimetablePresenter @Inject constructor(

    fun onSwipeRefresh() {
        Timber.i("Force refreshing the timetable")
-        loadData(true)
+        loadData(forceRefresh = true)
    }

    fun onRetry() {
@ -112,7 +116,7 @@ class TimetablePresenter @Inject constructor(
            showErrorView(false)
            showProgress(true)
        }
-        loadData(true)
+        loadData(forceRefresh = true)
    }

    fun onDetailsClick() {
@ -145,7 +149,7 @@ class TimetablePresenter @Inject constructor(
        return true
    }

-    private fun loadData(forceRefresh: Boolean = false) {
+    private fun loadData(forceRefresh: Boolean = false, isDayChanged: Boolean = false) {
        flatResourceFlow {
            val student = studentRepository.getCurrentStudent()
            val semester = semesterRepository.getCurrentSemester(student)
@ -169,9 +173,9 @@ class TimetablePresenter @Inject constructor(
                    enableSwipe(true)
                    showProgress(false)
                    showErrorView(false)
-                    showContent(it.lessons.isNotEmpty())
-                    showEmpty(it.lessons.isEmpty())
-                    updateData(it.lessons)
+                    updateData(it, isDayChanged)
+                    showContent(it.lessons.isNotEmpty() || it.additional.isNotEmpty())
+                    showEmpty(it.lessons.isEmpty() && it.additional.isEmpty())
                    setDayHeaderMessage(it.headers.find { header -> header.date == currentDate }?.content)
                    reloadNavigation()
                }
@ -216,67 +220,97 @@ class TimetablePresenter @Inject constructor(
        }
    }

-    private fun updateData(lessons: List<Timetable>) {
+    private fun updateData(lessons: TimetableFull, isDayChanged: Boolean) {
        tickTimer?.cancel()

-        if (currentDate != now()) {
-            view?.updateData(createItems(lessons))
-        } else {
-            tickTimer = timer(period = 2_000) {
+        view?.updateData(createItems(lessons), isDayChanged)
+        if (currentDate == now()) {
+            tickTimer = timer(period = 2_000, initialDelay = 2_000) {
                Handler(Looper.getMainLooper()).post {
-                    view?.updateData(createItems(lessons))
+                    view?.updateData(createItems(lessons), isDayChanged)
                }
            }
        }
    }

-    private fun createItems(items: List<Timetable>): List<TimetableItem> {
-        val filteredItems = items
-            .filter {
-                if (prefRepository.showWholeClassPlan == TimetableMode.ONLY_CURRENT_GROUP) {
-                    it.isStudentPlan
-                } else true
-            }
-            .sortedWith(compareBy({ item -> item.start }, { item -> !item.isStudentPlan }))
+    private sealed class Item(
+        val isStudentPlan: Boolean,
+        val start: Instant,
+        val number: Int?,
+    ) {
+        class Lesson(val lesson: Timetable) :
+            Item(lesson.isStudentPlan, lesson.start, lesson.number)
+
+        class Additional(val additional: TimetableAdditional) : Item(true, additional.start, null)
+    }
+
+    private fun createItems(fullTimetable: TimetableFull): List<TimetableItem> {
+        val showAdditionalLessonsInPlan = prefRepository.showAdditionalLessonsInPlan
+        val allItems =
+            fullTimetable.lessons.map(Item::Lesson) + fullTimetable.additional.map(Item::Additional)
+                .takeIf { showAdditionalLessonsInPlan != NONE }.orEmpty()
+
+        val filteredItems = allItems.filter {
+            if (prefRepository.showWholeClassPlan == TimetableMode.ONLY_CURRENT_GROUP) {
+                it.isStudentPlan
+            } else true
+        }.sortedWith(
+            (compareBy<Item> { it is Item.Additional }
+                .takeIf { showAdditionalLessonsInPlan == BELOW } ?: EmptyComparator())
+                .thenBy { it.start }
+                .thenBy { !it.isStudentPlan }
+        )

        var prevNum = when (prefRepository.showTimetableGaps) {
            BETWEEN_AND_BEFORE_LESSONS -> 0
            else -> null
        }
+        var prevIsAdditional = false
        return buildList {
            filteredItems.forEachIndexed { i, it ->
-                if (prefRepository.showTimetableGaps != NO_GAPS && prevNum != null && it.number > prevNum!! + 1) {
-                    val emptyLesson = TimetableItem.Empty(
-                        numFrom = prevNum!! + 1,
-                        numTo = it.number - 1
-                    )
-                    add(emptyLesson)
+                if (prefRepository.showTimetableGaps != NO_GAPS) {
+                    if (prevNum != null && it.number != null && it.number > prevNum!! + 1) {
+                        if (!prevIsAdditional) {
+                            // Additional lessons do count as a lesson so don't add empty lessons
+                            // when there is an additional lesson present
+                            val emptyLesson = TimetableItem.Empty(
+                                numFrom = prevNum!! + 1, numTo = it.number - 1
+                            )
+                            add(emptyLesson)
+                        }
+                    }
+                    prevNum = it.number
+                    prevIsAdditional = it is Item.Additional
                }

-                if (it.isStudentPlan) {
-                    val normalLesson = TimetableItem.Normal(
-                        lesson = it,
-                        showGroupsInPlan = prefRepository.showGroupsInPlan,
-                        timeLeft = filteredItems.getTimeLeftForLesson(it, i),
-                        onClick = ::onTimetableItemSelected,
-                        isLessonNumberVisible = !isEduOne
-                    )
-                    add(normalLesson)
-                } else {
-                    val smallLesson = TimetableItem.Small(
-                        lesson = it,
-                        onClick = ::onTimetableItemSelected,
-                        isLessonNumberVisible = !isEduOne
-                    )
-                    add(smallLesson)
+                if (it is Item.Lesson) {
+                    if (it.isStudentPlan) {
+                        val normalLesson = TimetableItem.Normal(
+                            lesson = it.lesson,
+                            showGroupsInPlan = prefRepository.showGroupsInPlan,
+                            timeLeft = filteredItems.getTimeLeftForLesson(it.lesson, i),
+                            onClick = ::onTimetableItemSelected,
+                            isLessonNumberVisible = !isEduOne
+                        )
+                        add(normalLesson)
+                    } else {
+                        val smallLesson = TimetableItem.Small(
+                            lesson = it.lesson,
+                            onClick = ::onTimetableItemSelected,
+                            isLessonNumberVisible = !isEduOne
+                        )
+                        add(smallLesson)
+                    }
+                } else if (it is Item.Additional) {
+                    // If the user disabled showing additional lessons, they would've been filtered
+                    // out already, so there's no need to check it again.
+                    add(TimetableItem.Additional(it.additional))
                }
-
-                prevNum = it.number
            }
        }
    }

-    private fun List<Timetable>.getTimeLeftForLesson(lesson: Timetable, index: Int): TimeLeft {
+    private fun List<Item>.getTimeLeftForLesson(lesson: Timetable, index: Int): TimeLeft {
        val isShowTimeUntil = lesson.isShowTimeUntil(getPreviousLesson(index))
        return TimeLeft(
            until = lesson.until.plusMinutes(1).takeIf { isShowTimeUntil },
@ -285,11 +319,20 @@ class TimetablePresenter @Inject constructor(
        )
    }

-    private fun List<Timetable>.getPreviousLesson(position: Int): Instant? {
-        return filter { it.isStudentPlan }
-            .getOrNull(position - 1 - filterIndexed { i, item -> i < position && !item.isStudentPlan }.size)
+    private fun List<Item>.getPreviousLesson(position: Int): Instant? {
+        val lessonAdditionalOffset = filterIndexed { i, item ->
+            i < position && item is Item.Additional
+        }.size
+        val lessonStudentPlanOffset = filterIndexed { i, item ->
+            i < position && !item.isStudentPlan
+        }.size
+        val lessonIndex = position - 1 - lessonAdditionalOffset - lessonStudentPlanOffset
+
+        return filterIsInstance<Item.Lesson>()
+            .filter { it.isStudentPlan }
+            .getOrNull(lessonIndex)
            ?.let {
-                if (!it.canceled && it.isStudentPlan) it.end
+                if (!it.lesson.canceled && it.isStudentPlan) it.lesson.end
                else null
            }
    }
@ -342,3 +385,7 @@ class TimetablePresenter @Inject constructor(
        super.onDetachView()
    }
 }
+
+private class EmptyComparator<T> : Comparator<T> {
+    override fun compare(o1: T, o2: T) = 0
+}
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableView.kt
@ -12,7 +12,7 @@ interface TimetableView : BaseView {

    fun initView()

-    fun updateData(data: List<TimetableItem>)
+    fun updateData(data: List<TimetableItem>, isDayChanged: Boolean)

    fun updateNavigationDay(date: String)

--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/AdditionalLessonsFragment.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/AdditionalLessonsFragment.kt
@ -13,7 +13,11 @@ import io.github.wulkanowy.ui.modules.main.MainActivity
 import io.github.wulkanowy.ui.modules.main.MainView
 import io.github.wulkanowy.ui.modules.timetable.additional.add.AdditionalLessonAddDialog
 import io.github.wulkanowy.ui.widgets.DividerItemDecoration
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.dpToPx
+import io.github.wulkanowy.utils.firstSchoolDayInSchoolYear
+import io.github.wulkanowy.utils.getThemeAttrColor
+import io.github.wulkanowy.utils.lastSchoolDayInSchoolYear
+import io.github.wulkanowy.utils.openMaterialDatePicker
 import java.time.LocalDate
 import javax.inject.Inject

@ -132,8 +136,12 @@ class AdditionalLessonsFragment :
        binding.additionalLessonsNextButton.visibility = if (show) View.VISIBLE else View.INVISIBLE
    }

-    override fun showAddAdditionalLessonDialog() {
-        (activity as? MainActivity)?.showDialogFragment(AdditionalLessonAddDialog.newInstance())
+    override fun showAddAdditionalLessonDialog(currentDate: LocalDate) {
+        (activity as? MainActivity)?.showDialogFragment(
+            AdditionalLessonAddDialog.newInstance(
+                currentDate
+            )
+        )
    }

    override fun showDatePickerDialog(selectedDate: LocalDate) {
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/AdditionalLessonsPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/AdditionalLessonsPresenter.kt
@ -1,14 +1,27 @@
 package io.github.wulkanowy.ui.modules.timetable.additional

 import android.annotation.SuppressLint
-import io.github.wulkanowy.data.*
 import io.github.wulkanowy.data.db.entities.TimetableAdditional
+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.SemesterRepository
 import io.github.wulkanowy.data.repositories.StudentRepository
 import io.github.wulkanowy.data.repositories.TimetableRepository
+import io.github.wulkanowy.domain.timetable.IsStudentHasLessonsOnWeekendUseCase
 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 io.github.wulkanowy.utils.capitalise
+import io.github.wulkanowy.utils.getLastSchoolDayIfHoliday
+import io.github.wulkanowy.utils.isHolidays
+import io.github.wulkanowy.utils.nextOrSameSchoolDay
+import io.github.wulkanowy.utils.nextSchoolDay
+import io.github.wulkanowy.utils.previousSchoolDay
+import io.github.wulkanowy.utils.toFormattedString
 import kotlinx.coroutines.flow.catch
 import kotlinx.coroutines.flow.flow
 import kotlinx.coroutines.flow.onEach
@ -22,11 +35,14 @@ class AdditionalLessonsPresenter @Inject constructor(
    errorHandler: ErrorHandler,
    private val semesterRepository: SemesterRepository,
    private val timetableRepository: TimetableRepository,
+    private val isStudentHasLessonsOnWeekendUseCase: IsStudentHasLessonsOnWeekendUseCase,
    private val analytics: AnalyticsHelper
 ) : BasePresenter<AdditionalLessonsView>(errorHandler, studentRepository) {

    private var baseDate: LocalDate = LocalDate.now().nextOrSameSchoolDay

+    private var isWeekendHasLessons: Boolean = false
+
    lateinit var currentDate: LocalDate
        private set

@ -43,12 +59,18 @@ class AdditionalLessonsPresenter @Inject constructor(
    }

    fun onPreviousDay() {
-        loadData(currentDate.previousSchoolDay)
+        val date = if (isWeekendHasLessons) {
+            currentDate.minusDays(1)
+        } else currentDate.previousSchoolDay
+        loadData(date)
        reloadView()
    }

    fun onNextDay() {
-        loadData(currentDate.nextSchoolDay)
+        val date = if (isWeekendHasLessons) {
+            currentDate.plusDays(1)
+        } else currentDate.nextSchoolDay
+        loadData(date)
        reloadView()
    }

@ -57,7 +79,7 @@ class AdditionalLessonsPresenter @Inject constructor(
    }

    fun onAdditionalLessonAddButtonClicked() {
-        view?.showAddAdditionalLessonDialog()
+        view?.showAddAdditionalLessonDialog(currentDate)
    }

    fun onDateSet(year: Int, month: Int, day: Int) {
@ -131,6 +153,8 @@ class AdditionalLessonsPresenter @Inject constructor(
        flatResourceFlow {
            val student = studentRepository.getCurrentStudent()
            val semester = semesterRepository.getCurrentSemester(student)
+
+            isWeekendHasLessons = isStudentHasLessonsOnWeekendUseCase(semester, currentDate)
            timetableRepository.getTimetable(
                student = student,
                semester = semester,
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/AdditionalLessonsView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/AdditionalLessonsView.kt
@ -36,7 +36,7 @@ interface AdditionalLessonsView : BaseView {

    fun showDatePickerDialog(selectedDate: LocalDate)

-    fun showAddAdditionalLessonDialog()
+    fun showAddAdditionalLessonDialog(currentDate: LocalDate)

    fun showSuccessMessage()

--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/add/AdditionalLessonAddDialog.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/add/AdditionalLessonAddDialog.kt
@ -3,6 +3,7 @@ package io.github.wulkanowy.ui.modules.timetable.additional.add
 import android.app.Dialog
 import android.os.Bundle
 import android.view.View
+import androidx.core.os.bundleOf
 import androidx.core.widget.doOnTextChanged
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.google.android.material.timepicker.MaterialTimePicker
@ -26,10 +27,12 @@ class AdditionalLessonAddDialog : BaseDialogFragment<DialogAdditionalAddBinding>
    lateinit var presenter: AdditionalLessonAddPresenter

    companion object {
-        fun newInstance() = AdditionalLessonAddDialog()
+        const val ARGUMENT_KEY = "additional_lesson_default_date"
+        fun newInstance(defaultDate: LocalDate) = AdditionalLessonAddDialog().apply {
+            arguments = bundleOf(ARGUMENT_KEY to defaultDate.toEpochDay())
+        }
    }

-
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return MaterialAlertDialogBuilder(requireContext(), theme)
            .setView(
@ -40,10 +43,13 @@ class AdditionalLessonAddDialog : BaseDialogFragment<DialogAdditionalAddBinding>

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
+        arguments?.getLong(ARGUMENT_KEY)?.let(LocalDate::ofEpochDay)?.let {
+            presenter.onDateSelected(it)
+        }
        presenter.onAttachView(this)
    }

-    override fun initView() {
+    override fun initView(selectedDate: LocalDate) {
        with(binding) {
            additionalLessonDialogStartEdit.doOnTextChanged { _, _, _, _ ->
                additionalLessonDialogStart.isErrorEnabled = false
@ -53,6 +59,7 @@ class AdditionalLessonAddDialog : BaseDialogFragment<DialogAdditionalAddBinding>
                additionalLessonDialogEnd.isErrorEnabled = false
                additionalLessonDialogEnd.error = null
            }
+            additionalLessonDialogDateEdit.setText(selectedDate.toFormattedString())
            additionalLessonDialogDateEdit.doOnTextChanged { _, _, _, _ ->
                additionalLessonDialogDate.isErrorEnabled = false
                additionalLessonDialogDate.error = null
@ -61,7 +68,6 @@ class AdditionalLessonAddDialog : BaseDialogFragment<DialogAdditionalAddBinding>
                additionalLessonDialogContent.isErrorEnabled = false
                additionalLessonDialogContent.error = null
            }
-
            additionalLessonDialogAdd.setOnClickListener {
                presenter.onAddAdditionalClicked(
                    start = additionalLessonDialogStartEdit.text?.toString(),
@ -155,7 +161,9 @@ class AdditionalLessonAddDialog : BaseDialogFragment<DialogAdditionalAddBinding>
            .build()

        timePicker.addOnPositiveButtonClickListener {
-            onTimeSelected(LocalTime.of(timePicker.hour, timePicker.minute))
+            if (isAdded) {
+                onTimeSelected(LocalTime.of(timePicker.hour, timePicker.minute))
+            }
        }

        if (!parentFragmentManager.isStateSaved) {
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/add/AdditionalLessonAddPresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/add/AdditionalLessonAddPresenter.kt
@ -10,9 +10,12 @@ import io.github.wulkanowy.utils.lastSchoolDayInSchoolYear
 import io.github.wulkanowy.utils.toLocalDate
 import kotlinx.coroutines.launch
 import timber.log.Timber
-import java.time.*
+import java.time.LocalDate
+import java.time.LocalTime
+import java.time.ZoneId
+import java.time.ZonedDateTime
 import java.time.temporal.ChronoUnit
-import java.util.*
+import java.util.UUID
 import javax.inject.Inject

 class AdditionalLessonAddPresenter @Inject constructor(
@ -30,7 +33,7 @@ class AdditionalLessonAddPresenter @Inject constructor(

    override fun onAttachView(view: AdditionalLessonAddView) {
        super.onAttachView(view)
-        view.initView()
+        view.initView(selectedDate)
        Timber.i("AdditionalLesson details view was initialized")
    }

--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/add/AdditionalLessonAddView.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/additional/add/AdditionalLessonAddView.kt
@ -6,7 +6,7 @@ import java.time.LocalTime

 interface AdditionalLessonAddView : BaseView {

-    fun initView()
+    fun initView(selectedDate: LocalDate)

    fun closeDialog()

--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetConfigurePresenter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetConfigurePresenter.kt
@ -42,22 +42,24 @@ class TimetableWidgetConfigurePresenter @Inject constructor(
    }

    private fun loadData() {
-        resourceFlow { studentRepository.getSavedStudents(false) }.onEach {
-            when (it) {
-                is Resource.Loading -> Timber.d("Timetable widget configure students data load")
-                is Resource.Success -> {
-                    val selectedStudentId = appWidgetId?.let { id ->
-                        sharedPref.getLong(getStudentWidgetKey(id), 0)
-                    } ?: -1
-                    when {
-                        it.data.isEmpty() -> view?.openLoginView()
-                        it.data.size == 1 && !isFromProvider -> onItemSelect(it.data.single().student)
-                        else -> view?.updateData(it.data, selectedStudentId)
+        resourceFlow { studentRepository.getSavedStudentsWithSemesters(false) }
+            .onEach {
+                when (it) {
+                    is Resource.Loading -> Timber.d("Timetable widget configure students data load")
+                    is Resource.Success -> {
+                        val selectedStudentId = appWidgetId?.let { id ->
+                            sharedPref.getLong(getStudentWidgetKey(id), 0)
+                        } ?: -1
+                        when {
+                            it.data.isEmpty() -> view?.openLoginView()
+                            it.data.size == 1 && !isFromProvider -> onItemSelect(it.data.single().student)
+                            else -> view?.updateData(it.data, selectedStudentId)
+                        }
                    }
+
+                    is Resource.Error -> errorHandler.dispatch(it.error)
                }
-                is Resource.Error -> errorHandler.dispatch(it.error)
-            }
-        }.launch()
+            }.launch()
    }

    private fun registerStudent(student: Student?) {
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetFactory.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetFactory.kt
@ -95,13 +95,20 @@ class TimetableWidgetFactory(

    private suspend fun getStudent(studentId: Long): Student? {
        val students = studentRepository.getSavedStudents()
-        return students.singleOrNull { it.student.id == studentId }?.student
+        return students.singleOrNull { it.id == studentId }
    }

    private suspend fun getLessons(
        student: Student, semester: Semester, date: LocalDate
    ): List<Timetable> {
-        val timetable = timetableRepository.getTimetable(student, semester, date, date, false)
+        val timetable = timetableRepository.getTimetable(
+            student = student,
+            semester = semester,
+            start = date,
+            end = date,
+            forceRefresh = false,
+            isFromAppWidget = true
+        )
        val lessons = timetable.toFirstResult().dataOrThrow.lessons
        return lessons.sortedBy { it.start }
    }
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetProvider.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetProvider.kt
@ -2,7 +2,11 @@ package io.github.wulkanowy.ui.modules.timetablewidget

 import android.app.PendingIntent
 import android.appwidget.AppWidgetManager
-import android.appwidget.AppWidgetManager.*
+import android.appwidget.AppWidgetManager.ACTION_APPWIDGET_DELETED
+import android.appwidget.AppWidgetManager.ACTION_APPWIDGET_UPDATE
+import android.appwidget.AppWidgetManager.EXTRA_APPWIDGET_ID
+import android.appwidget.AppWidgetManager.EXTRA_APPWIDGET_IDS
+import android.appwidget.AppWidgetManager.INVALID_APPWIDGET_ID
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
@ -22,7 +26,14 @@ import io.github.wulkanowy.data.repositories.StudentRepository
 import io.github.wulkanowy.services.widgets.TimetableWidgetService
 import io.github.wulkanowy.ui.modules.Destination
 import io.github.wulkanowy.ui.modules.splash.SplashActivity
-import io.github.wulkanowy.utils.*
+import io.github.wulkanowy.utils.AnalyticsHelper
+import io.github.wulkanowy.utils.PendingIntentCompat
+import io.github.wulkanowy.utils.capitalise
+import io.github.wulkanowy.utils.nextOrSameSchoolDay
+import io.github.wulkanowy.utils.nextSchoolDay
+import io.github.wulkanowy.utils.nickOrName
+import io.github.wulkanowy.utils.previousSchoolDay
+import io.github.wulkanowy.utils.toFormattedString
 import kotlinx.coroutines.DelicateCoroutinesApi
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
@ -244,7 +255,7 @@ class TimetableWidgetProvider : BroadcastReceiver() {

    private suspend fun getStudent(studentId: Long, appWidgetId: Int) = try {
        val students = studentRepository.getSavedStudents(false)
-        val student = students.singleOrNull { it.student.id == studentId }?.student
+        val student = students.singleOrNull { it.id == studentId }
        when {
            student != null -> student
            studentId != 0L && studentRepository.isCurrentStudentSet() -> {
@ -263,7 +274,10 @@ class TimetableWidgetProvider : BroadcastReceiver() {
    }

    private fun setupAccountView(
-        context: Context, student: Student, remoteViews: RemoteViews, widgetId: Int
+        context: Context,
+        student: Student,
+        remoteViews: RemoteViews,
+        widgetId: Int
    ) {
        val accountInitials = getAccountInitials(student.nickOrName)
        val accountPickerPendingIntent = createAccountPickerPendingIntent(context, widgetId)
--- a/app/src/main/java/io/github/wulkanowy/utils/AppWidgetUpdater.kt
+++ b/app/src/main/java/io/github/wulkanowy/utils/AppWidgetUpdater.kt
@ -0,0 +1,34 @@
+package io.github.wulkanowy.utils
+
+import android.appwidget.AppWidgetManager
+import android.content.BroadcastReceiver
+import android.content.ComponentName
+import android.content.Context
+import android.content.Intent
+import dagger.hilt.android.qualifiers.ApplicationContext
+import timber.log.Timber
+import javax.inject.Inject
+import kotlin.reflect.KClass
+
+class AppWidgetUpdater @Inject constructor(
+    @ApplicationContext private val context: Context,
+    private val appWidgetManager: AppWidgetManager
+) {
+
+    fun updateAllAppWidgetsByProvider(providerClass: KClass<out BroadcastReceiver>) {
+        try {
+            val ids = appWidgetManager.getAppWidgetIds(ComponentName(context, providerClass.java))
+            if (ids.isEmpty()) return
+
+            val intent = Intent(context, providerClass.java)
+                .apply {
+                    action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
+                    putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids)
+                }
+
+            context.sendBroadcast(intent)
+        } catch (e: Exception) {
+            Timber.e(e, "Failed to update all widgets for provider $providerClass")
+        }
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/utils/AttendanceExtension.kt
+++ b/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
-    get() = presence.toDouble() + absenceForSchoolReasons + lateness + latenessExcused
+inline val AttendanceSummary.allPresences: Int
+    get() = presence + absenceForSchoolReasons + lateness + latenessExcused

-private inline val AttendanceSummary.allAbsences: Double
-    get() = absence.toDouble() + absenceExcused
+inline val AttendanceSummary.allAbsences: Int
+    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 {
--- a/app/src/main/java/io/github/wulkanowy/utils/SyncListAdapter.kt
+++ b/app/src/main/java/io/github/wulkanowy/utils/SyncListAdapter.kt
@ -0,0 +1,66 @@
+package io.github.wulkanowy.utils
+
+import android.annotation.SuppressLint
+import androidx.recyclerview.widget.DiffUtil
+import androidx.recyclerview.widget.RecyclerView
+
+/**
+ * Custom alternative to androidx.recyclerview.widget.ListAdapter. ListAdapter is asynchronous which
+ * caused data race problems in views when a Resource.Error arrived shortly after
+ * Resource.Intermediate/Success - occasionally in that case the user could see both the Resource's
+ * data and an error message one on top of the other. This is synchronized by design to avoid that
+ * problem, however it retains the quality of life improvements of the original.
+ */
+abstract class SyncListAdapter<T : Any, VH : RecyclerView.ViewHolder> private constructor(
+    private val updateStrategy: SyncListAdapter<T, VH>.(List<T>) -> Unit
+) : RecyclerView.Adapter<VH>() {
+
+    constructor(differ: DiffUtil.ItemCallback<T>) : this({ newItems ->
+        val diffResult = DiffUtil.calculateDiff(toCallback(differ, items, newItems))
+        items = newItems
+        diffResult.dispatchUpdatesTo(this)
+    })
+
+    var items = emptyList<T>()
+        private set
+
+    final override fun getItemCount() = items.size
+
+    fun getItem(position: Int): T {
+        return items[position]
+    }
+
+    /**
+     * Updates all items, same as submitList, however also disables animations temporarily.
+     * This prevents a flashing effect on some views. Should be used in favor of submitList when
+     * all data is changed (e.g. the selected day changes in timetable causing all lessons to change).
+     */
+    @SuppressLint("NotifyDataSetChanged")
+    fun recreate(data: List<T>) {
+        items = data
+        notifyDataSetChanged()
+    }
+
+    fun submitList(data: List<T>) {
+        updateStrategy(data.toList())
+    }
+
+    private fun <T : Any> toCallback(
+        itemCallback: DiffUtil.ItemCallback<T>,
+        old: List<T>,
+        new: List<T>,
+    ) = object : DiffUtil.Callback() {
+        override fun getOldListSize() = old.size
+
+        override fun getNewListSize() = new.size
+
+        override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int) =
+            itemCallback.areItemsTheSame(old[oldItemPosition], new[newItemPosition])
+
+        override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int) =
+            itemCallback.areContentsTheSame(old[oldItemPosition], new[newItemPosition])
+
+        override fun getChangePayload(oldItemPosition: Int, newItemPosition: Int) =
+            itemCallback.getChangePayload(old[oldItemPosition], new[newItemPosition])
+    }
+}
--- a/app/src/main/play/listings/cs-CZ/full-description.txt
+++ b/app/src/main/play/listings/cs-CZ/full-description.txt
@ -6,7 +6,7 @@ Zvýrazněné vlastnosti a funkce:
 - šťastné číslo,
 - náhled na další a dokončené lekce,
 - tmavý motiv,
- žádné reklamy,
+- volitelné reklamy,
 - offline režim,
 - upozornění.

--- a/app/src/main/play/listings/pl-PL/full-description.txt
+++ b/app/src/main/play/listings/pl-PL/full-description.txt
@ -6,7 +6,7 @@ Wyróżnione cechy i funkcje:
 - szczęśliwy numerek,
 - podgląd lekcji dodatkowych i zrealizowanych,
 - ciemny motyw.
- brak reklam,
+- opcjonalne reklam,
 - tryb offline,
 - powiadomienia.

--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/1-start.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/1-start.jpg
--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/2.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/2.jpg
--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/3-timetable-dialog.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/3-timetable-dialog.jpg
--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/4-exams.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/4-exams.jpg
--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/5-timetable-widget.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/5-timetable-widget.jpg
--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/6-class-grades.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/6-class-grades.jpg
--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/7-account-switcher.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/7-account-switcher.jpg
--- a/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/8-themes.jpg
+++ b/app/src/main/play/listings/pl-PL/graphics/phone-screenshots/8-themes.jpg
--- a/app/src/main/play/listings/sk/full-description.txt
+++ b/app/src/main/play/listings/sk/full-description.txt
@ -6,7 +6,7 @@ Zvýraznené vlastnosti a funkcie:
 - šťastné číslo,
 - náhľad na ďalšie a dokončené lekcie,
 - tmavý motív,
- žiadne reklamy,
+- voliteľné reklamy,
 - offline režim,
 - upozornenia.

--- a/app/src/main/play/release-notes/pl-PL/default.txt
+++ b/app/src/main/play/release-notes/pl-PL/default.txt
@ -1,6 +1,8 @@
-Wersja 2.5.7
+Wersja 2.6.1

-— naprawiliśmy logowanie (pusta lista z wyborem uczniów), które zepsuło się po zmianach po stronie VULCANa
-— dodaliśmy wyświetlanie osobno średniej rocznej, bo VULCAN rozdzielił i zrobił się bałagan
+— dodaliśmy kalkulator frekwencji
+— dodaliśmy wyświetlanie lekcji dodatkowych w planie lekcji
+— ulepszyliśmy wyjaśnienie na ekranie z miejscem na wpisanie numeru PESEL
+— naprawiliśmy rzadkie sytuacje, gdy plan lekcji nakładał się na informację o jego braku

 Pełna lista zmian: https://github.com/wulkanowy/wulkanowy/releases
--- a/app/src/main/res/drawable/ic_menu_attendance_calculator.xml
+++ b/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>
--- a/app/src/main/res/layout/dialog_auth.xml
+++ b/app/src/main/res/layout/dialog_auth.xml
@ -32,12 +32,11 @@
                android:layout_height="wrap_content"
                android:layout_marginHorizontal="24dp"
                android:layout_marginTop="8dp"
-                android:textSize="16sp"
+                android:textSize="14sp"
                app:layout_constraintTop_toBottomOf="@id/auth_title"
-                app:lineHeight="24sp"
+                app:lineHeight="18sp"
                tools:text="@string/auth_description" />

-
            <com.google.android.material.textfield.TextInputLayout
                android:id="@+id/auth_input_layout"
                style="@style/Widget.Material3.TextInputLayout.OutlinedBox"
--- a/app/src/main/res/layout/fragment_attendance_calculator.xml
+++ b/app/src/main/res/layout/fragment_attendance_calculator.xml
@ -0,0 +1,103 @@
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".ui.modules.attendance.calculator.AttendanceCalculatorFragment">
+
+    <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
+        android:id="@+id/attendanceCalculatorSwipe"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/attendanceCalculatorRecycler"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            tools:listitem="@layout/item_attendance_calculator_header" />
+    </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
+
+    <com.google.android.material.progressindicator.CircularProgressIndicator
+        android:id="@+id/attendanceCalculatorProgress"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:indeterminate="true"
+        tools:visibility="gone" />
+
+    <LinearLayout
+        android:id="@+id/attendanceCalculatorEmpty"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:visibility="invisible"
+        tools:ignore="UseCompoundDrawables">
+
+        <ImageView
+            android:layout_width="100dp"
+            android:layout_height="100dp"
+            app:srcCompat="@drawable/ic_main_attendance"
+            app:tint="?colorOnBackground"
+            tools:ignore="contentDescription" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            android:gravity="center"
+            android:text="@string/attendance_no_items"
+            android:textSize="20sp" />
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/attendanceCalculatorError"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:orientation="vertical"
+        android:visibility="invisible"
+        tools:ignore="UseCompoundDrawables"
+        tools:visibility="invisible">
+
+        <ImageView
+            android:layout_width="100dp"
+            android:layout_height="100dp"
+            app:srcCompat="@drawable/ic_error"
+            app:tint="?colorOnBackground"
+            tools:ignore="contentDescription" />
+
+        <TextView
+            android:id="@+id/attendanceCalculatorErrorMessage"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="20dp"
+            android:gravity="center"
+            android:padding="8dp"
+            android:text="@string/error_unknown"
+            android:textSize="20sp" />
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:gravity="center"
+            android:orientation="horizontal">
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/attendanceCalculatorErrorDetails"
+                style="@style/Widget.MaterialComponents.Button.OutlinedButton"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginEnd="8dp"
+                android:layout_marginRight="8dp"
+                android:text="@string/all_details" />
+
+            <com.google.android.material.button.MaterialButton
+                android:id="@+id/attendanceCalculatorErrorRetry"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:text="@string/all_retry" />
+        </LinearLayout>
+    </LinearLayout>
+</FrameLayout>
--- a/app/src/main/res/layout/fragment_login_student_select.xml
+++ b/app/src/main/res/layout/fragment_login_student_select.xml
@ -11,6 +11,18 @@
        android:layout_width="match_parent"
        android:layout_height="match_parent">

+        <include
+            android:id="@+id/login_student_select_admin_message"
+            layout="@layout/item_dashboard_admin_message"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginHorizontal="16dp"
+            android:layout_marginTop="16dp"
+            android:visibility="gone"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_chainStyle="packed"
+            tools:visibility="visible" />
+
        <TextView
            android:id="@+id/loginStudentSelectHeader"
            android:layout_width="match_parent"
@ -28,7 +40,7 @@
            app:layout_constraintBottom_toTopOf="@id/loginStudentSelectRecycler"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
-            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/login_student_select_admin_message"
            app:layout_constraintVertical_chainStyle="packed" />

        <androidx.recyclerview.widget.RecyclerView
--- a/app/src/main/res/layout/fragment_login_symbol.xml
+++ b/app/src/main/res/layout/fragment_login_symbol.xml
@ -95,6 +95,18 @@
                    android:background="?android:attr/listDivider" />
            </LinearLayout>

+            <include
+                android:id="@+id/login_symbol_admin_message"
+                layout="@layout/item_dashboard_admin_message"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginHorizontal="16dp"
+                android:layout_marginTop="16dp"
+                android:visibility="gone"
+                app:layout_constraintTop_toBottomOf="@+id/loginSymbolContact"
+                app:layout_constraintVertical_chainStyle="packed"
+                tools:visibility="visible" />
+
            <TextView
                android:id="@+id/loginSymbolHeader"
                android:layout_width="match_parent"
@ -111,7 +123,7 @@
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintHorizontal_bias="0.5"
                app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toBottomOf="@+id/loginSymbolContact"
+                app:layout_constraintTop_toBottomOf="@+id/login_symbol_admin_message"
                app:layout_constraintVertical_chainStyle="packed" />

            <TextView
--- a/app/src/main/res/layout/item_attendance_calculator_header.xml
+++ b/app/src/main/res/layout/item_attendance_calculator_header.xml
@ -0,0 +1,111 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:paddingStart="8dp"
+    android:paddingTop="6dp"
+    android:paddingEnd="12dp"
+    android:paddingBottom="6dp">
+
+    <TextView
+        android:id="@+id/attendanceCalculatorPercentage"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="right|center_vertical"
+        android:minWidth="32dp"
+        android:minHeight="36dp"
+        android:textSize="22sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="50" />
+
+    <TextView
+        android:id="@+id/attendanceCalculatorPercentagePercentSign"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="%"
+        android:textColor="?android:textColorSecondary"
+        app:layout_constraintBaseline_toBaselineOf="@+id/attendanceCalculatorPercentage"
+        app:layout_constraintStart_toEndOf="@+id/attendanceCalculatorPercentage" />
+
+    <TextView
+        android:id="@+id/attendanceCalculatorSummaryValues"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="left"
+        android:maxLines="1"
+        android:textColor="?android:textColorSecondary"
+        android:textSize="13sp"
+        app:layout_constraintEnd_toStartOf="@+id/attendanceCalculatorSummaryDot"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintHorizontal_chainStyle="packed"
+        app:layout_constraintStart_toStartOf="@+id/attendanceCalculatorTitle"
+        app:layout_constraintTop_toBottomOf="@+id/attendanceCalculatorTitle"
+        tools:text="11/123 obecności" />
+
+    <TextView
+        android:id="@+id/attendanceCalculatorSummaryDot"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="4dp"
+        android:gravity="center"
+        android:text="·"
+        android:textColor="?android:textColorSecondary"
+        android:textSize="13sp"
+        app:layout_constraintEnd_toStartOf="@+id/attendanceCalculatorSummaryBalance"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintStart_toEndOf="@+id/attendanceCalculatorSummaryValues"
+        app:layout_constraintTop_toBottomOf="@+id/attendanceCalculatorTitle" />
+
+    <TextView
+        android:id="@+id/attendanceCalculatorSummaryBalance"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="left"
+        android:maxLines="1"
+        android:minWidth="24dp"
+        android:textColor="?android:textColorSecondary"
+        android:textSize="13sp"
+        app:layout_constraintEnd_toStartOf="@+id/attendanceCalculatorWarning"
+        app:layout_constraintHorizontal_bias="0"
+        app:layout_constraintHorizontal_chainStyle="packed"
+        app:layout_constraintStart_toEndOf="@+id/attendanceCalculatorSummaryDot"
+        app:layout_constraintTop_toBottomOf="@+id/attendanceCalculatorTitle"
+        tools:text="12 powyżej celu" />
+
+    <TextView
+        android:id="@+id/attendanceCalculatorTitle"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="10dp"
+        android:layout_marginEnd="8dp"
+        android:ellipsize="end"
+        android:maxLines="1"
+        android:textSize="16sp"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toStartOf="@+id/attendanceCalculatorWarning"
+        app:layout_constraintStart_toEndOf="@+id/attendanceCalculatorPercentagePercentSign"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="Informatyka" />
+
+    <ImageView
+        android:id="@+id/attendanceCalculatorWarning"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:contentDescription=""
+        android:layout_marginStart="12dp"
+        android:gravity="center_vertical|right"
+        android:minWidth="24dp"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:srcCompat="@drawable/ic_all_round_mark"
+        app:tint="?colorPrimary"
+        tools:visibility="visible" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/item_timetable_main_additional.xml
+++ b/app/src/main/res/layout/item_timetable_main_additional.xml
@ -0,0 +1,153 @@
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="?selectableItemBackground"
+    android:paddingStart="8dp"
+    android:paddingTop="6dp"
+    android:paddingEnd="12dp"
+    android:paddingBottom="6dp"
+    tools:context=".ui.modules.timetable.TimetableAdapter">
+
+    <TextView
+        android:id="@+id/timetableItemNumber"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:includeFontPadding="false"
+        android:maxLength="2"
+        android:minWidth="40dp"
+        android:minHeight="40dp"
+        android:textColor="?android:textColorPrimary"
+        android:textSize="32sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0" />
+
+    <TextView
+        android:id="@+id/timetableItemSubject"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="10dp"
+        android:layout_marginEnd="16dp"
+        android:ellipsize="end"
+        android:maxLines="1"
+        android:textColor="?android:textColorPrimary"
+        android:textSize="15sp"
+        app:layout_constraintEnd_toStartOf="@id/timetableItemTimeBarrier"
+        app:layout_constraintStart_toEndOf="@+id/timetableItemTimeStart"
+        app:layout_constraintTop_toTopOf="@id/timetableItemTimeStart"
+        tools:text="@tools:sample/lorem" />
+
+    <TextView
+        android:id="@+id/timetableItemTimeStart"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:maxLines="1"
+        android:textColor="?android:textColorSecondary"
+        android:textSize="13sp"
+        app:layout_constraintBottom_toTopOf="@id/timetableItemTimeFinish"
+        app:layout_constraintStart_toEndOf="@id/timetableItemNumber"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0"
+        app:layout_constraintVertical_chainStyle="packed"
+        tools:text="11:11" />
+
+    <TextView
+        android:id="@+id/timetableItemTimeFinish"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="4dp"
+        android:maxLines="1"
+        android:textColor="?android:textColorSecondary"
+        android:textSize="13sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintStart_toEndOf="@id/timetableItemNumber"
+        app:layout_constraintTop_toBottomOf="@id/timetableItemTimeStart"
+        tools:text="12:00" />
+
+    <TextView
+        android:id="@+id/timetableItemTeacher"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="10dp"
+        android:layout_marginEnd="8dp"
+        android:ellipsize="end"
+        android:maxLines="1"
+        android:textColor="?android:textColorSecondary"
+        android:textSize="13sp"
+        app:layout_constrainedWidth="true"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/timetableItemTimeStart"
+        app:layout_constraintTop_toTopOf="@id/timetableItemTimeFinish"
+        android:text="@string/timetable_additional_lesson"
+        tools:visibility="visible" />
+
+    <TextView
+        android:id="@+id/timetableItemDescription"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="10dp"
+        android:layout_marginTop="0dp"
+        android:layout_marginEnd="16dp"
+        android:textColor="?colorTimetableChange"
+        android:textSize="13sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@id/timetableItemTimeFinish"
+        app:layout_constraintTop_toTopOf="@id/timetableItemTimeFinish"
+        tools:text="Lekcja odwołana: uczniowie zwolnieni do domu"
+        tools:visibility="gone" />
+
+    <androidx.constraintlayout.widget.Barrier
+        android:id="@+id/timetableItemTimeBarrier"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:barrierDirection="start"
+        app:constraint_referenced_ids="timetableItemTimeUntil,timetableItemTimeLeft" />
+
+    <TextView
+        android:id="@+id/timetableItemTimeUntil"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="4dp"
+        android:ellipsize="end"
+        android:gravity="center"
+        android:maxLines="1"
+        android:paddingLeft="4dp"
+        android:paddingRight="4dp"
+        android:textColor="?colorPrimary"
+        android:textSize="13sp"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="za 15 min"
+        tools:visibility="gone" />
+
+    <TextView
+        android:id="@+id/timetableItemTimeLeft"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentEnd="true"
+        android:layout_marginStart="4dp"
+        android:background="@drawable/background_timetable_time_left"
+        android:ellipsize="end"
+        android:gravity="center"
+        android:includeFontPadding="false"
+        android:maxLines="1"
+        android:paddingLeft="7dp"
+        android:paddingTop="2dp"
+        android:paddingRight="7dp"
+        android:paddingBottom="2dp"
+        android:textColor="?colorOnPrimary"
+        android:textSize="13sp"
+        android:visibility="gone"
+        app:backgroundTint="?colorPrimary"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@id/timetableItemTimeStart"
+        tools:text="jeszcze 15 min"
+        tools:visibility="visible" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/pref_target_attendance.xml
+++ b/app/src/main/res/layout/pref_target_attendance.xml
@ -0,0 +1,140 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+Taken from https://android.googlesource.com/platform/frameworks/support/+/refs/heads/androidx-camerax-release/preference/preference/res/layout/preference_widget_seekbar_material.xml.
+
+  ~ Copyright (C) 2018 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+<!-- Layout used by SeekBarPreference for the seekbar widget style. -->
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:minHeight="?android:attr/listPreferredItemHeightSmall"
+    android:gravity="center_vertical"
+    android:paddingLeft="?android:attr/listPreferredItemPaddingLeft"
+    android:paddingStart="?android:attr/listPreferredItemPaddingStart"
+    android:paddingRight="?android:attr/listPreferredItemPaddingRight"
+    android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
+    android:background="?android:attr/selectableItemBackground"
+    android:clipChildren="false"
+    android:clipToPadding="false"
+    android:baselineAligned="false">
+    <include layout="@layout/image_frame"/>
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:layout_marginTop="8dp"
+        android:layout_marginBottom="8dp"
+        android:clipChildren="false"
+        android:clipToPadding="false">
+        <RelativeLayout
+            android:layout_width="wrap_content"
+            android:layout_height="0dp"
+            android:layout_weight="1">
+            <TextView
+                android:id="@android:id/title"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:singleLine="true"
+                android:textAppearance="?android:attr/textAppearanceListItem"
+                android:ellipsize="marquee"/>
+            <TextView
+                android:id="@android:id/summary"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_below="@android:id/title"
+                android:layout_alignLeft="@android:id/title"
+                android:layout_alignStart="@android:id/title"
+                android:layout_gravity="start"
+                android:textAlignment="viewStart"
+                android:textColor="?android:attr/textColorSecondary"
+                android:maxLines="4"
+                style="@style/PreferenceSummaryTextStyle"/>
+        </RelativeLayout>
+        <!-- Using UnPressableLinearLayout as a workaround to disable the pressed state propagation
+        to the children of this container layout. Otherwise, the animated pressed state will also
+        play for the thumb in the AbsSeekBar in addition to the preference's ripple background.
+        The background of the SeekBar is also set to null to disable the ripple background -->
+        <androidx.preference.UnPressableLinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_vertical"
+            android:paddingLeft="0dp"
+            android:paddingStart="0dp"
+            android:paddingRight="16dp"
+            android:paddingEnd="16dp"
+            android:clipChildren="false"
+            android:clipToPadding="false">
+            <!-- The total height of the Seekbar widget's area should be 48dp - this allows for an
+            increased touch area so you do not need to exactly tap the thumb to move it. However,
+            setting the Seekbar height directly causes the thumb and seekbar to be misaligned on
+            API 22 and 23 - so instead we just set 15dp padding above and below, to account for the
+            18dp default height of the Seekbar thumb for a total of 48dp.
+            Note: we set 0dp padding at the start and end of this seekbar to allow it to properly
+            fit into the layout, but this means that there's no leeway on either side for touch
+            input - this might be something we should reconsider down the line. -->
+            <SeekBar
+                android:id="@+id/seekbar"
+                android:layout_width="0dp"
+                android:layout_weight="1"
+                android:layout_height="wrap_content"
+                android:paddingLeft="@dimen/preference_seekbar_padding_horizontal"
+                android:paddingStart="@dimen/preference_seekbar_padding_horizontal"
+                android:paddingRight="@dimen/preference_seekbar_padding_horizontal"
+                android:paddingEnd="@dimen/preference_seekbar_padding_horizontal"
+                android:paddingTop="@dimen/preference_seekbar_padding_vertical"
+                android:paddingBottom="@dimen/preference_seekbar_padding_vertical"
+
+                android:background="@null"/>
+            <!-- If the value is shown, we reserve a minimum width of 36dp to allow for consistent
+            seekbar width for smaller values. If the value is ~4 or more digits, it will expand
+            into the seekbar width. -->
+            <TextView
+                android:id="@+id/seekbar_value"
+                android:minWidth="@dimen/preference_seekbar_value_minWidth"
+                android:paddingLeft="8dp"
+                android:paddingStart="8dp"
+                android:paddingRight="0dp"
+                android:paddingEnd="0dp"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:gravity="right"
+                android:singleLine="true"
+                android:textAppearance="?android:attr/textAppearanceListItem"
+                android:ellipsize="marquee"
+                android:fadingEdge="horizontal"
+                android:scrollbars="none"/>
+            <!-- Wulkanowy start -->
+            <TextView
+                android:minWidth="0dp"
+                android:paddingLeft="0dp"
+                android:paddingStart="0dp"
+                android:paddingRight="0dp"
+                android:paddingEnd="0dp"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:gravity="left"
+                android:singleLine="true"
+                android:textAppearance="?android:attr/textAppearanceListItem"
+                android:ellipsize="marquee"
+                android:fadingEdge="horizontal"
+                android:scrollbars="none"
+                android:text="%"
+                />
+            <!-- Wulkanowy end -->
+        </androidx.preference.UnPressableLinearLayout>
+    </LinearLayout>
+</LinearLayout>
--- a/app/src/main/res/menu/action_menu_attendance.xml
+++ b/app/src/main/res/menu/action_menu_attendance.xml
@ -1,6 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/attendanceMenuCalculator"
+        android:icon="@drawable/ic_menu_attendance_calculator"
+        android:orderInCategory="0"
+        android:title="@string/attendance_calculator_button"
+        app:iconTint="@color/material_on_surface_emphasis_medium"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/attendanceMenuSummary"
        android:icon="@drawable/ic_menu_attendance_summary"
--- a/app/src/main/res/menu/action_menu_attendance_calculator.xml
+++ b/app/src/main/res/menu/action_menu_attendance_calculator.xml
@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/attendance_calculator_menu_settings"
+        android:icon="@drawable/ic_more_settings"
+        android:orderInCategory="2"
+        android:title="@string/pref_attendance_calculator_appearance_settings_title"
+        app:iconTint="?colorControlNormal"
+        app:showAsAction="ifRoom" />
+</menu>
--- a/app/src/main/res/values-cs/preferences_values.xml
+++ b/app/src/main/res/values-cs/preferences_values.xml
@ -1,5 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:tools="http://schemas.android.com/tools">
+    <string name="sort_alphabetically">Abecedně</string>
+    <string name="sort_by_date">Podle data</string>
+    <string name="sort_by_average">Podle průměru</string>
+    <string name="sort_by_attendance_percentage">Podle procenta docházky</string>
+    <string name="sort_by_subject_attendance_balance">Podle rovnováhy docházky předmětu</string>
    <string-array name="app_theme_entries" tools:ignore="InconsistentArrays">
        <item>Světlý</item>
        <item>Tmavý</item>
@ -31,11 +36,6 @@
        <item>0,5</item>
        <item>0,75</item>
    </string-array>
-    <string-array name="grade_sorting_mode_entries">
-        <item>Abecedně</item>
-        <item>Podle data</item>
-        <item>Podle průměru</item>
-    </string-array>
    <string-array name="grade_color_scheme_entries">
        <item>Dzienniczek+</item>
        <item>Wulkanowy</item>
@ -56,10 +56,15 @@
        <item>Pouze mezi lekcemi</item>
        <item>Před a mezi lekcemi</item>
    </string-array>
+    <string-array name="timetable_show_additional_lessons_entries">
+        <item>Nezobrazovat</item>
+        <item>Zobrazit v řadě</item>
+        <item>Zobrazit pod pravidelnými hodinami</item>
+    </string-array>
    <string-array name="dashboard_tile_entries">
        <item>Šťastné číslo</item>
        <item>Nepřečtené zprávy</item>
-        <item>Frekvence</item>
+        <item>Docházka</item>
        <item>Lekce</item>
        <item>Známky</item>
        <item>Domácí úkoly</item>
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@ -4,7 +4,7 @@
    <string name="login_title">Přihlášení</string>
    <string name="main_title">Wulkanowy</string>
    <string name="grade_title">Známky</string>
-    <string name="attendance_title">Frekvence</string>
+    <string name="attendance_title">Docházka</string>
    <string name="exam_title">Zkoušky</string>
    <string name="timetable_title">Plán lekce</string>
    <string name="settings_title">Nastavení</string>
@ -31,7 +31,7 @@
    <!--Subtitles-->
    <string name="grade_subtitle">Semestr %1$d, %2$d/%3$d</string>
    <!--Login-->
-    <string name="login_header_default">Přihlaste se pomocí studentského nebo rodičovského účtu</string>
+    <string name="login_header_default">Přihlaste se pomocí žákovského nebo rodičovského účtu</string>
    <string name="login_header_symbol">Zadejte symbol ze stránky deníku: &lt;b&gt;%1$s&lt;/b&gt;</string>
    <string name="login_nickname_hint">Uživatelské jméno</string>
    <string name="login_email_hint">Email</string>
@ -64,7 +64,7 @@
    <string name="login_symbol_helper">Symbol najdete na stránce deníku v &#160;<b>Uczeń</b>→&#160;<b>Dostęp Mobilny</b> →&#160;<b>Wygeneruj kod dostępu</b>.\n\nUjistěte se, že jste nastavili správnou variantu deníku v poli <b>Variace deníku UONET+</b> na první přihlašovací obrazovce</string>
    <string name="login_select_student">Vyberte žáky, kteří se mají do aplikace přihlásit</string>
    <string name="login_advanced">Jiné možnosti</string>
-    <string name="login_advanced_warning_mobile_api">V tomto režimu nefungují následující: šťastné číslo, statistiky třídy, shrnutí frekvencí, ospravedlnění nepřítomnosti, dokončené lekce, informace o škole a prohlížení seznamu registrovaných zařízení</string>
+    <string name="login_advanced_warning_mobile_api">V tomto režimu nefungují následující: šťastné číslo, statistiky třídy, shrnutí docházky, ospravedlnění nepřítomnosti, dokončené lekce, informace o škole a prohlížení seznamu registrovaných zařízení</string>
    <string name="login_advanced_warning_scraper">Tento režim zobrazuje stejná data, která se zobrazují na webových stránkách deníka</string>
    <string name="login_advanced_warning_hybrid">Kombinace nejlepších vlastností ostatních dvou režimů. Funguje rychleji než scraper a poskytuje funkce, které nejsou k dispozici v režimu Mobile API. Je to v experimentální fázi</string>
    <string name="login_privacy_policy">Ochrana osobních údajů</string>
@ -113,13 +113,17 @@
    <string name="grade_comment">Komentář</string>
    <string name="grade_number_new_items">Počet nových známek: %1$d</string>
    <string name="grade_average">Průměr: %1$.2f</string>
+    <string name="grade_average_year">Roční: %1$.2f</string>
    <string name="grade_points_sum">Body: %s</string>
    <string name="grade_no_average">Bez průměru</string>
+    <string name="grade_summary_average_semester">Pololetní průměr</string>
+    <string name="grade_summary_average_year">Roční průměr</string>
    <string name="grade_summary_points">Součet bodů</string>
    <string name="grade_summary_final_grade">Konečná známka</string>
    <string name="grade_summary_predicted_grade">Předpokládaná známka</string>
    <string name="grade_summary_descriptive">Popisná známka</string>
-    <string name="grade_summary_calculated_average">Vypočítaný průměr</string>
+    <string name="grade_summary_calculated_average">Vypočítaný pololetní průměr</string>
+    <string name="grade_summary_calculated_average_annual">Vypočítaný roční průměr</string>
    <string name="grade_summary_calculated_average_help_dialog_title">Jak funguje vypočítaný průměr?</string>
    <string name="grade_summary_calculated_average_help_dialog_message">Vypočítaný průměr je aritmetický průměr vypočítaný z průměrů předmětů. Umožňuje vám to znát přibližný konečný průměr. Vypočítává se způsobem zvoleným uživatelem v nastavení aplikaci. Doporučuje se vybrat příslušnou možnost. Důvodem je rozdílný výpočet školních průměrů. Pokud vaše škola navíc uvádí průměr předmětů na stránce deníku Vulcan, aplikace si je stáhne a tyto průměry nepočítá. To lze změnit vynucením výpočtu průměru v nastavení aplikaci.\n\n<b>Průměr známek pouze z vybraného semestru</b>:\n1. Výpočet váženého průměru pro každý předmět v daném semestru\n2. Sčítání vypočítaných průměrů\n3. Výpočet aritmetického průměru součtených průměrů\n\n<b>Průměr průměrů z obou semestrů</b>:\n1. Výpočet váženého průměru pro každý předmět v semestru 1 a 2\n2. Výpočet aritmetického průměru vypočítaných průměrů za semestry 1 a 2 pro každý předmět.\n3. Sčítání vypočítaných průměrů\n4. Výpočet aritmetického průměru sečtených průměrů\n\n<b>Průměr známek z celého roku:</b>\n1. Výpočet váženého průměru za rok pro každý předmět. Konečný průměr v 1. semestru je nepodstatný.\n2. Sčítání vypočítaných průměrů\n3. Výpočet aritmetického průměru součtených průměrů</string>
    <string name="grade_summary_final_average_help_dialog_title">Jak funguje konečný průměr?</string>
@ -194,6 +198,7 @@
    </plurals>
    <!--Timetable-->
    <string name="timetable_lesson">Lekce</string>
+    <string name="timetable_additional_lesson">Další lekce</string>
    <string name="timetable_room">Učebna</string>
    <string name="timetable_group">Skupina</string>
    <string name="timetable_time">Hodiny</string>
@ -264,7 +269,13 @@
    <string name="additional_lessons_end">Čas ukončení</string>
    <string name="additional_lessons_end_time_error">Čas ukončení musí být pozdější než čas zahájení</string>
    <!--Attendance-->
-    <string name="attendance_summary_button">Shrnutí frekvencí</string>
+    <string name="attendance_summary_button">Shrnutí docházky</string>
+    <string name="attendance_calculator_button">Kalkulačka docházky</string>
+    <string name="attendance_calculator_summary_balance_positive"><b>%1$d</b> nad cílem</string>
+    <string name="attendance_calculator_summary_balance_neutral">přesně v cíli</string>
+    <string name="attendance_calculator_summary_balance_negative"><b>%1$d</b> pod cílem</string>
+    <string name="attendance_calculator_summary_values">%1$d/%2$d přítomnosti</string>
+    <string name="attendance_calculator_summary_values_empty">Nebyla zaznamenána žádná docházka</string>
    <string name="attendance_absence_school">Nepřítomnost ze školních důvodů</string>
    <string name="attendance_absence_excused">Omluvená nepřítomnost</string>
    <string name="attendance_absence_unexcused">Neomluvená nepřítomnost</string>
@ -282,22 +293,22 @@
    <string name="attendance_excuse_no_selection">Musíte vybrat alespoň jednu nepřítomnost!</string>
    <string name="attendance_excuse_title">Ospravedlnit</string>
    <plurals name="attendance_notify_new_items_title">
-        <item quantity="one">Nové frekvence</item>
-        <item quantity="few">Nové frekvence</item>
-        <item quantity="many">Nové frekvence</item>
-        <item quantity="other">Nové frekvence</item>
+        <item quantity="one">Nová docházka</item>
+        <item quantity="few">Nové docházky</item>
+        <item quantity="many">Nové docházky</item>
+        <item quantity="other">Nové docházky</item>
    </plurals>
    <plurals name="attendance_notify_new_items">
-        <item quantity="one">%1$d nové frekvence</item>
-        <item quantity="few">%1$d nové frekvence</item>
-        <item quantity="many">%1$d nových frekvencí</item>
-        <item quantity="other">%1$d nových frekvencí</item>
+        <item quantity="one">%1$d nová docházka</item>
+        <item quantity="few">%1$d nové docházky</item>
+        <item quantity="many">%1$d nových docházek</item>
+        <item quantity="other">%1$d nových docházek</item>
    </plurals>
    <plurals name="attendance_number_item">
-        <item quantity="one">%d frekvence</item>
-        <item quantity="few">%d frekvence</item>
-        <item quantity="many">%d frekvencí</item>
-        <item quantity="other">%d frekvencí</item>
+        <item quantity="one">%d docházka</item>
+        <item quantity="few">%d docházky</item>
+        <item quantity="many">%d docházek</item>
+        <item quantity="other">%d docházek</item>
    </plurals>
    <!--Attendance summary-->
    <string name="attendance_summary_total">Společně</string>
@ -731,9 +742,13 @@
    <string name="pref_view_grade_average_mode">Možnosti vypočítaného průměru</string>
    <string name="pref_view_grade_average_force_calc">Vynutit průměrný výpočet podle aplikace</string>
    <string name="pref_view_present">Zobrazit přítomnost</string>
+    <string name="pref_attendance_target">Cílová docházka</string>
+    <string name="pref_attendance_calculator_show_empty_subjects">Zobrazit předměty bez docházek</string>
+    <string name="pref_view_attendance_calculator_sorting_mode">Třídění kalkulačky docházky</string>
    <string name="pref_view_app_theme">Motiv</string>
    <string name="pref_view_expand_grade">Rozvíjení známek</string>
    <string name="pref_view_timetable_show_groups">Zobrazit skupiny vedle předmětů</string>
+    <string name="pref_view_timetable_show_additional_lessons">Zobrazit další lekce</string>
    <string name="pref_view_timetable_show_gaps">Zobrazit prázdné dlaždice, kde není žádná lekce</string>
    <string name="pref_view_grade_statistics_list">Zobrazit seznam grafů v známkách třídy</string>
    <string name="pref_view_subjects_without_grades">Zobrazit předměty bez známek</string>
@ -797,7 +812,9 @@
    <string name="pref_grades_appearance_header">Známky</string>
    <string name="pref_dashboard_appearance_header">Domů</string>
    <string name="pref_dashboard_appearance_tiles_title">Viditelnost dlaždic</string>
-    <string name="pref_attendance_appearance_view">Frekvence</string>
+    <string name="pref_attendance_appearance_view">Docházka</string>
+    <string name="pref_attendance_calculator_appearance_view">Kalkulačka docházky</string>
+    <string name="pref_attendance_calculator_appearance_settings_title">Nastavení</string>
    <string name="pref_timetable_appearance_view">Plán lekce</string>
    <string name="pref_grades_advanced_header">Známky</string>
    <string name="pref_counted_average_advanced_header">Vypočítaný průměr</string>
@ -825,7 +842,7 @@
    <string name="channel_upcoming_lessons">Nadcházející lekce</string>
    <string name="channel_debug">Ladění</string>
    <string name="channel_change_timetable">Změny plánu lekcí</string>
-    <string name="channel_new_attendance">Nové frekvence</string>
+    <string name="channel_new_attendance">Nové docházky</string>
    <!--Colors-->
    <string name="all_black">Černá</string>
    <string name="all_red">Červená</string>
@ -849,7 +866,7 @@
    <string name="auth_button">Autorizovat</string>
    <string name="auth_success">Autorizace byla úspěšně dokončena</string>
    <string name="auth_title">Autorizace</string>
-    <string name="auth_description">Pro provoz aplikace potřebujeme potvrdit vaši identitu. Zadejte PESEL žáka &lt;b&gt;%1$s&lt;/b&gt; v níže uvedeném poli</string>
+    <string name="auth_description">Vážený rodiči,&lt;br/&gt;&lt;br/&gt;Chcete-li autorizovat a zajistit bezpečnost dat, prosíme Vás, abyste níže zadali PESEL číslo žáka &lt;b&gt;%1$s&lt;/b&gt;. Tyto detaily jsou nutné pro správné přidělování přístupu k osobním údajům a jejich ochranu v souladu s platnými předpisy.&lt;br/&gt;&lt;br/&gt;Po zadání údajů budou data ověřena, čímž se zajistí, že přístup do systému VULCAN získají pouze autorizované osoby. Pokud máte jakékoliv pochybnosti nebo problémy, kontaktujte prosím školního správce deníku pro objasnění situace.&lt;br/&gt;&lt;br/&gt;Udržujeme nejvyšší standardy ochrany osobních údajů a zajišťujeme, aby byly všechny poskytnuté informace chráněné. Wulkanowy neukládá ani nezpracovává číslo PESEL.&lt;br/&gt;&lt;br/&gt;Připomínáme, že poskytování úplných a přesných údajů je nutné a nezbytné k používání systému VULCAN.</string>
    <string name="auth_button_skip">Zatím přeskočit</string>
    <!--Captcha-->
    <string name="captcha_dialog_title">Webová stránka deníku VULCAN vyžaduje ověření</string>
--- a/app/src/main/res/values-da-rDK/preferences_values.xml
+++ b/app/src/main/res/values-da-rDK/preferences_values.xml
@ -1,70 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources xmlns:tools="http://schemas.android.com/tools">
-    <string-array name="app_theme_entries" tools:ignore="InconsistentArrays">
-        <item>Light</item>
-        <item>Dark</item>
-        <item>Black (AMOLED)</item>
-    </string-array>
-    <string-array name="app_language_entries">
-        <item>System language</item>
-        <item>Polski</item>
-        <item>English</item>
-        <item>Pусский</item>
-        <item>Українська</item>
-        <item>Deutsch</item>
-        <item>Čeština</item>
-        <item>Slovenčina</item>
-    </string-array>
-    <string-array name="services_interval_entries">
-        <item>15 minutes</item>
-        <item>30 minutes</item>
-        <item>1 hour</item>
-        <item>2 hours</item>
-        <item>6 hours</item>
-        <item>12 hours</item>
-        <item>24 hours</item>
-    </string-array>
-    <string-array name="grade_modifier_entries">
-        <item>0,00</item>
-        <item>0,25</item>
-        <item>0,33</item>
-        <item>0,5</item>
-        <item>0,75</item>
-    </string-array>
-    <string-array name="grade_sorting_mode_entries">
-        <item>Alphabetically</item>
-        <item>By date</item>
-        <item>By average</item>
-    </string-array>
-    <string-array name="grade_color_scheme_entries">
-        <item>Dzienniczek+</item>
-        <item>Wulkanowy</item>
-        <item>Grade colors in register</item>
-    </string-array>
-    <string-array name="default_expand_grade_entries">
-        <item>Up to 1 at once</item>
-        <item>Always expanded</item>
-        <item>Unlimited expansions</item>
-    </string-array>
-    <string-array name="grade_average_mode_entries">
-        <item>Average of grades only from selected semester</item>
-        <item>Average of averages from both semesters</item>
-        <item>Average of grades from the whole year</item>
-    </string-array>
-    <string-array name="timetable_show_gaps_entries">
-        <item>Don\'t show</item>
-        <item>Only between lessons</item>
-        <item>Before and between lessons</item>
-    </string-array>
-    <string-array name="dashboard_tile_entries">
-        <item>Lucky number</item>
-        <item>Unread messages</item>
-        <item>Attendance</item>
-        <item>Lessons</item>
-        <item>Grades</item>
-        <item>Homework</item>
-        <item>School announcements</item>
-        <item>Exams</item>
-        <item>Conferences</item>
-    </string-array>
-</resources>
--- a/app/src/main/res/values-de/preferences_values.xml
+++ b/app/src/main/res/values-de/preferences_values.xml
@ -1,5 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources xmlns:tools="http://schemas.android.com/tools">
+    <string name="sort_alphabetically">Alphabetisch</string>
+    <string name="sort_by_date">Nach Datum</string>
+    <string name="sort_by_average">Nach Durchschnitt</string>
+    <string name="sort_by_attendance_percentage">Nach Anwesenheitsprozent</string>
+    <string name="sort_by_subject_attendance_balance">Nach Subjekt Anwesenheitssaldo</string>
    <string-array name="app_theme_entries" tools:ignore="InconsistentArrays">
        <item>Licht</item>
        <item>Dunkel</item>
@ -31,11 +36,6 @@
        <item>0,5</item>
        <item>0,75</item>
    </string-array>
-    <string-array name="grade_sorting_mode_entries">
-        <item>Alphabetisch</item>
-        <item>Nach Datum</item>
-        <item>Nach Durchschnitt</item>
-    </string-array>
    <string-array name="grade_color_scheme_entries">
        <item>Dzienniczek+</item>
        <item>Wulkanowy</item>
@ -56,6 +56,11 @@
        <item>Only between lessons</item>
        <item>Before and between lessons</item>
    </string-array>
+    <string-array name="timetable_show_additional_lessons_entries">
+        <item>Nicht zeigen</item>
+        <item>Inline anzeigen</item>
+        <item>Unterhalb der regulären Lektionen anzeigen</item>
+    </string-array>
    <string-array name="dashboard_tile_entries">
        <item>Glückszahl</item>
        <item>Ungelesene Nachrichten</item>
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@ -10,10 +10,10 @@
    <string name="settings_title">Einstellungen</string>
    <string name="more_title">Mehr</string>
    <string name="about_title">Über die Applikation</string>
-    <string name="logviewer_title">Log viewer</string>
+    <string name="logviewer_title">Log Viewer</string>
    <string name="debug_title">Debuggen</string>
    <string name="notification_debug_title">Benachrichtigungen debuggen</string>
-    <string name="debug_cookies_clear">Clear webview cookies</string>
+    <string name="debug_cookies_clear">Webview-Cookies löschen</string>
    <string name="contributors_title">Mitarbeiter</string>
    <string name="license_title">Lizenzen</string>
    <string name="message_title">Nachrichten</string>
@ -38,14 +38,14 @@
    <string name="login_login_pesel_email_hint">Anmeldung, PESEL oder e-mail</string>
    <string name="login_password_hint">Passwort</string>
    <string name="login_host_hint">UONET+ Registervariante</string>
-    <string name="login_domain_suffix_hint">Custom domain suffix</string>
+    <string name="login_domain_suffix_hint">Benutzerdefinierte Domeisensuffixe</string>
    <string name="login_type_api">Mobile API</string>
    <string name="login_type_scrapper">Scraper</string>
    <string name="login_type_hybrid">Hybride</string>
    <string name="login_token_hint">Token</string>
    <string name="login_pin_hint">PIN</string>
    <string name="login_symbol_hint">Symbol</string>
-    <string name="login_symbol_placeholder">E.g. \"lodz\" or \"powiatjaroslawski\"</string>
+    <string name="login_symbol_placeholder">Zum Beispiel \"lodz\" oder \"powiatjaroslawski\"</string>
    <string name="login_sign_in">Anmelden</string>
    <string name="login_invalid_password">Passwort ist zu kurz</string>
    <string name="login_incorrect_password_default">Anmeldedaten sind falsch</string>
@ -56,9 +56,9 @@
    <string name="login_invalid_email">Ungültige email</string>
    <string name="login_invalid_login">Den zugewiesenen Login anstelle von email verwenden</string>
    <string name="login_invalid_custom_email">Benutze den zugewiesenen Login oder E-Mail in @%1$s</string>
-    <string name="login_invalid_domain_suffix">Invalid domain suffix</string>
-    <string name="login_invalid_symbol">Invalid symbol. If you cannot find it, please contact the school</string>
-    <string name="login_invalid_symbol_definitely">Don\'t make this up! If you cannot find it, please contact the school</string>
+    <string name="login_invalid_domain_suffix">Ungültiges Domain-Suffix</string>
+    <string name="login_invalid_symbol">Ungültiges Symbol. Wenn Sie es nicht finden können, wenden Sie sich bitte an die Schule</string>
+    <string name="login_invalid_symbol_definitely">Denken Sie sich das nicht aus! Wenn Sie es nicht finden können, wenden Sie sich bitte an die Schule</string>
    <string name="login_incorrect_symbol">Schüler nicht gefunden. Überprüfen Sie das Symbol und die gewählte Variation des UONET+ Registers</string>
    <string name="login_duplicate_student">Ausgewählter Student ist bereits angemeldet.</string>
    <string name="login_symbol_helper">Das Symbol kann auf der Registerseite in&#160;<b>Student </b>→&#160;<b>Tost Möbeln</b> →&#160;<b>Registrieren Sie Ihr Mobilgerät</b>gefunden werden.\n\nStellen Sie sicher, dass Sie die entsprechende Registervariante im Feld <b>UONET+ Registervariante</b> auf dem vorherigen Bildschirm festgelegt haben</string>
@ -73,7 +73,7 @@
    <string name="login_contact_discord">Discord</string>
    <string name="login_email_intent_title">email senden</string>
    <string name="login_recover_warning">Stellen Sie sicher, dass Sie die richtige UONET+ Registervariation wählen!</string>
-    <string name="login_recover_button">Reset password</string>
+    <string name="login_recover_button">Passwort zurücksetzen</string>
    <string name="login_recover_title">Ihr Konto wiederherstellen</string>
    <string name="login_recover">Wiederherstellen</string>
    <string name="login_signed_in">Student ist bereits angemeldet</string>
@ -81,13 +81,13 @@
    <string name="login_other_search_locations">Andere Suchorte</string>
    <string name="login_no_active_student">Keine aktiven Schüler gefunden</string>
    <string name="login_symbol_enter">Geben Sie ein anderes Symbol ein</string>
-    <string name="login_support_title">Get help</string>
-    <string name="login_support_school_hint">Full school name with the town (required)</string>
-    <string name="login_support_school_placeholder">Np. ZSTiO Jarosław lub SP nr 99 w Łodzi</string>
-    <string name="login_support_school_invalid">Enter correct name of the school</string>
-    <string name="login_support_additional_hint">Additional information in Polish (optional)</string>
-    <string name="login_support_additional_placeholder">Np. \"Ostatnio zmieniłem szkołę i…\" albo \"Jestem rodzicem i nie widzę drugiego dziecka…\"</string>
-    <string name="login_support_submit">Submit</string>
+    <string name="login_support_title">Hilfe anfragen</string>
+    <string name="login_support_school_hint">Vollschulname mit der Stadt (erforderlich)</string>
+    <string name="login_support_school_placeholder">Z. B. ZSTiO Jarosław oder SP nr 99 w Łodzi</string>
+    <string name="login_support_school_invalid">Geben Sie den richtigen Namen der Schule ein</string>
+    <string name="login_support_additional_hint">Zusätzliche Informationen auf Polnisch (fakultativ)</string>
+    <string name="login_support_additional_placeholder">Z. B. „Ich habe kürzlich die Schule gewechselt und...“ oder „Ich bin ein Elternteil und kann das Konto des anderen Kindes nicht sehen...“</string>
+    <string name="login_support_submit">Einreichen</string>
    <!--Notifications-->
    <string name="notifications_header_title">Benachrichtigungen aktivieren</string>
    <string name="notifications_header_description">Aktivieren Sie Benachrichtigungen, damit Sie keine Nachricht vom Lehrer oder eine neue Klasse verpassen</string>
@ -98,8 +98,8 @@
    <string name="main_log_in">Anmelden</string>
    <string name="main_session_expired">Die Sitzung ist abgelaufen</string>
    <string name="main_session_relogin">Die Sitzung ist abgelaufen, bitte loggen Sie sich erneut ein</string>
-    <string name="main_expired_credentials_title">Password has expired or been changed</string>
-    <string name="main_expired_credentials_description">Your account password has expired or been changed. You will need to log in to Wulkanowy again</string>
+    <string name="main_expired_credentials_title">Das Passwort ist abgelaufen oder wurde geändert</string>
+    <string name="main_expired_credentials_description">Ihr Passwort ist abgelaufen oder wurde geändert. Sie müssen sich erneut bei Wulkanowy anmelden</string>
    <string name="main_support_title">Anwendungsunterstützung</string>
    <string name="main_support_description">Gefällt Ihnen diese App? Unterstützen Sie ihre Entwicklung, indem Sie nicht-invasive Werbung aktivieren, die Sie jederzeit deaktivieren können</string>
    <string name="main_support_positive">Werbung aktivieren</string>
@ -113,13 +113,17 @@
    <string name="grade_comment">Kommentar</string>
    <string name="grade_number_new_items">Anzahl der neuen Bewertungen: %1$d</string>
    <string name="grade_average">Durchschnitt: %1$.2f</string>
+    <string name="grade_average_year">Jährlich: %1$.2f</string>
    <string name="grade_points_sum">Punkte: %s</string>
    <string name="grade_no_average">Kein Durchschnitt</string>
+    <string name="grade_summary_average_semester">Semesterdurchschnitt</string>
+    <string name="grade_summary_average_year">Jahresdurchschnitt</string>
    <string name="grade_summary_points">Gesamtpunkte</string>
    <string name="grade_summary_final_grade">Finaler Note</string>
    <string name="grade_summary_predicted_grade">Vorhergesagte Note</string>
-    <string name="grade_summary_descriptive">Descriptive grade</string>
-    <string name="grade_summary_calculated_average">Berechnender Durchschnitt</string>
+    <string name="grade_summary_descriptive">Deskriptive Note</string>
+    <string name="grade_summary_calculated_average">Berechneter Semesterdurchschnitt</string>
+    <string name="grade_summary_calculated_average_annual">Berechneter Jahresdurchschnitt</string>
    <string name="grade_summary_calculated_average_help_dialog_title">Wie funktioniert der berechnete Durchschnitt?</string>
    <string name="grade_summary_calculated_average_help_dialog_message">Der berechnete Mittelwert ist das arithmetische Mittel, das aus den Durchschnittswerten der Probanden errechnet wird. Es erlaubt Ihnen, den ungefähre endgültigen Durchschnitt zu kennen. Sie wird auf eine vom Anwender in den Anwendungseinstellungen gewählte Weise berechnet. Es wird empfohlen, die entsprechende Option zu wählen. Das liegt daran, dass die Berechnung der Schuldurchschnitte unterschiedlich ist. Wenn Ihre Schule den Durchschnitt der Fächer auf der Vulcan-Seite angibt, lädt die Anwendung diese Fächer herunter und berechnet nicht den Durchschnitt. Dies kann geändert werden, indem die Berechnung des Durchschnitts in den Anwendungseinstellungen erzwungen wird. \n\n<b>Durchschnitt der Noten nur aus dem ausgewählten Semester </b>:\n1. Berechnung des gewichteten Durchschnitts für jedes Fach in einem bestimmten Semester\n2. Addition der berechneten Durchschnittswerte\n3. Berechnung des arithmetischen Mittels der summierten Durchschnitte\n<b>Durchschnitt der Durchschnitte aus beiden Semestern</b>:\n1. Berechnung des gewichteten Durchschnitts für jedes Fach in Semester 1 und 2\n2. Berechnung des arithmetischen Mittels der berechneten Durchschnitte für Semester 1 und 2 für jedes Fach. \n3. Hinzufügen von berechneten Durchschnittswerten\n4. Berechnung des arithmetischen Mittels der summierten Durchschnitte\n<b>Durchschnitt der Noten aus dem ganzen Jahr:</b>\n1. Berechnung des gewichteten Jahresdurchschnitts für jedes Fach. Der Abschlussdurchschnitt im 1. Semester ist irrelevant. \n2. Addition der berechneten Durchschnittswerte\n3. Berechnung des arithmetischen Mittels der summierten Mittelwerte</string>
    <string name="grade_summary_final_average_help_dialog_title">Wie funktioniert der endgültige Durchschnitt?</string>
@ -155,8 +159,8 @@
        <item quantity="other">Neue Abschlussnoten</item>
    </plurals>
    <plurals name="grade_new_items_descriptive">
-        <item quantity="one">New descriptive grade</item>
-        <item quantity="other">New descriptive grades</item>
+        <item quantity="one">Neuer Deskriptive Grade</item>
+        <item quantity="other">Neuer Deskriptive Grades</item>
    </plurals>
    <plurals name="grade_notify_new_items">
        <item quantity="one">Du hast %1$d Note bekommen</item>
@ -171,11 +175,12 @@
        <item quantity="other">Sie haben %1$d Abschlussnoten bekommen</item>
    </plurals>
    <plurals name="grade_notify_new_items_descriptive">
-        <item quantity="one">You received %1$d descriptive grade</item>
-        <item quantity="other">You received %1$d descriptive grades</item>
+        <item quantity="one">Sie haben %1$d deskriptive Grade erhalten</item>
+        <item quantity="other">Sie haben %1$d deskriptive Grades erhalten</item>
    </plurals>
    <!--Timetable-->
    <string name="timetable_lesson">Lektion</string>
+    <string name="timetable_additional_lesson">Zusätzliche Lektion</string>
    <string name="timetable_room">Klassenzimmer</string>
    <string name="timetable_group">Gruppe</string>
    <string name="timetable_time">Stunden</string>
@ -194,8 +199,8 @@
    <string name="timetable_notify_change_teacher">Wechsel des Lehrers von %1$s zu %2$s</string>
    <string name="timetable_notify_change_subject">Thema von %1$s zu %2$s wechseln</string>
    <plurals name="timetable_no_lesson">
-        <item quantity="one">No lesson</item>
-        <item quantity="other">No lessons</item>
+        <item quantity="one">Keine Lektion</item>
+        <item quantity="other">Keine Lektionen</item>
    </plurals>
    <plurals name="timetable_notify_new_items_title">
        <item quantity="one">Änderung des Zeitplans</item>
@ -237,6 +242,12 @@
    <string name="additional_lessons_end_time_error">Endzeit muss grösser sein als Startzeit</string>
    <!--Attendance-->
    <string name="attendance_summary_button">Übersicht über die Schulbesuch</string>
+    <string name="attendance_calculator_button">Anwesenheitsrechner</string>
+    <string name="attendance_calculator_summary_balance_positive"><b>%1$d</b> Über Ziel</string>
+    <string name="attendance_calculator_summary_balance_neutral">direkt am ziel</string>
+    <string name="attendance_calculator_summary_balance_negative"><b>%1$d</b> Unter Ziel</string>
+    <string name="attendance_calculator_summary_values">%1$d/%2$d Präsenzen</string>
+    <string name="attendance_calculator_summary_values_empty">Keine Anwesenheit verzeichnet</string>
    <string name="attendance_absence_school">Aus schulischen Gründen abwesend</string>
    <string name="attendance_absence_excused">Entschuldigte Abwesenheit</string>
    <string name="attendance_absence_unexcused">Unentschuldigtes Abwesenheit</string>
@ -296,10 +307,10 @@
    <string name="message_forward">Weiterleiten</string>
    <string name="message_select_all">Alle auswählen</string>
    <string name="message_unselect_all">Alle abwählen</string>
-    <string name="message_restore_from_trash">Restore from trash</string>
+    <string name="message_restore_from_trash">Wiederherstellen aus dem Papierkorb</string>
    <string name="message_move_to_trash">In Papierkorb verschieben</string>
    <string name="message_delete_forever">Dauerhaft löschen</string>
-    <string name="message_restore_success">Message restored successfully</string>
+    <string name="message_restore_success">Nachricht erfolgreich wiederhergestellt</string>
    <string name="message_delete_success">Nachricht erfolgreich gelöscht</string>
    <string name="message_mailbox_type_student">schüler</string>
    <string name="message_mailbox_type_parent">Eltern</string>
@ -337,10 +348,10 @@
        <item quantity="other">%1$d ausgewählt</item>
    </plurals>
    <string name="message_messages_deleted">Nachrichten gelöscht</string>
-    <string name="message_messages_restored">Messages restored</string>
+    <string name="message_messages_restored">Wiederhergestellte Nachrichten</string>
    <string name="message_mailbox_chooser_title">Postfach auswählen</string>
-    <string name="message_incognito_mode_on">Incognito mode is on</string>
-    <string name="message_incognito_description">Thanks to incognito mode sender is not notified when you read the message</string>
+    <string name="message_incognito_mode_on">Inkognito-Modus ist aktiviert</string>
+    <string name="message_incognito_description">Dank des Inkognito-Modus wird der Absender nicht benachrichtigt, wenn Sie die Nachricht lesen</string>
    <!--Note-->
    <string name="note_no_items">Keine Informationen über Eintragen</string>
    <string name="note_points">Punkte</string>
@ -637,10 +648,14 @@
    <string name="pref_view_grade_average_mode">Berechnete Durchschnittsoptionen</string>
    <string name="pref_view_grade_average_force_calc">Mittelwertberechnung durch App erzwingen</string>
    <string name="pref_view_present">Anwesendheit zeigen</string>
+    <string name="pref_attendance_target">Anwesenheitsziel</string>
+    <string name="pref_attendance_calculator_show_empty_subjects">Lektion ohne Anwesenheit anzeigen</string>
+    <string name="pref_view_attendance_calculator_sorting_mode">Anwesenheitsrechner Sortierung</string>
    <string name="pref_view_app_theme">Thema</string>
    <string name="pref_view_expand_grade">Steigende Sorten</string>
    <string name="pref_view_timetable_show_groups">Gruppen neben Schulfächen anzeigen</string>
-    <string name="pref_view_timetable_show_gaps">Show empty tiles where there\'s no lesson</string>
+    <string name="pref_view_timetable_show_additional_lessons">Zusätzliche Lektionen anzeigen</string>
+    <string name="pref_view_timetable_show_gaps">Leere Kacheln anzeigen, wenn es keinen Lektionen gibt</string>
    <string name="pref_view_grade_statistics_list">Liste der Diagramme in Klassenbewertungen anzeigen</string>
    <string name="pref_view_subjects_without_grades">Schulfächer ohne Noten anzeigen</string>
    <string name="pref_view_grade_color_scheme">Farbschema der Noten</string>
@ -681,12 +696,12 @@
    <string name="pref_other_grade_modifier_minus">Wert des Minus</string>
    <string name="pref_other_fill_message_content">Antwort mit Nachrichtenhistorie</string>
    <string name="pref_other_optional_arithmetic_average">Arithmetisches Mittel anzeigen, wenn keine Gewichte angegeben sind</string>
-    <string name="pref_other_incognito_mode">Incognito mode</string>
-    <string name="pref_other_incognito_mode_summary">Do not inform about reading the message</string>
+    <string name="pref_other_incognito_mode">Inkognito-Modus</string>
+    <string name="pref_other_incognito_mode_summary">Nicht über das Lesen der Nachricht informieren</string>
    <string name="pref_ads_support_category_name">Unterstützung</string>
    <string name="pref_ads_privacy_policy">Datenschutz-Bestimmungen</string>
    <string name="pref_ads_agreements">Vereinbarungen</string>
-    <string name="pref_ads_consent">Show consent to data processing</string>
+    <string name="pref_ads_consent">Einwilligung zur Datenverarbeitung zeigen</string>
    <string name="pref_ads_show_in_app">Anzeigen in der App anzeigen</string>
    <string name="pref_ads_support">Einzelanzeige ansehen, um Projekt zu unterstützen</string>
    <string name="pref_ads_privacy_title">Einwilligung in die Datenverarbeitung</string>
@ -704,6 +719,8 @@
    <string name="pref_dashboard_appearance_header">Dashboard</string>
    <string name="pref_dashboard_appearance_tiles_title">Sichtbarkeit der Kacheln</string>
    <string name="pref_attendance_appearance_view">Schulbesuch</string>
+    <string name="pref_attendance_calculator_appearance_view">Anwesenheits-Rechner</string>
+    <string name="pref_attendance_calculator_appearance_settings_title">Einstellungen</string>
    <string name="pref_timetable_appearance_view">Stundenplan</string>
    <string name="pref_grades_advanced_header">Noten</string>
    <string name="pref_counted_average_advanced_header">Berechneter Durchschnitt</string>
@ -749,37 +766,37 @@
    <string name="menu_order_confirm_content">Die Anwendung muss neu gestartet werden, damit die Änderungen gespeichert werden</string>
    <string name="menu_order_confirm_restart">Restart</string>
    <!--Auth-->
-    <string name="auth_api_error">Authorization has been rejected. The data provided does not match the records in the secretary\'s office.</string>
-    <string name="auth_invalid_error">Invalid PESEL</string>
+    <string name="auth_api_error">Die Autorisierung wurde abgelehnt. Die vorgelegten Daten stimmen nicht mit denen des Sekretariats überein.</string>
+    <string name="auth_invalid_error">Ungültig PESEL</string>
    <string name="auth_pesel">PESEL</string>
-    <string name="auth_button">Authorize</string>
-    <string name="auth_success">Authorization completed successfully</string>
-    <string name="auth_title">Authorization</string>
-    <string name="auth_description">To operate the application, we need to confirm your identity. Please enter the student\'s PESEL &lt;b&gt;%1$s&lt;/b&gt; in the field below</string>
-    <string name="auth_button_skip">Skip for now</string>
+    <string name="auth_button">Autorisieren Sie</string>
+    <string name="auth_success">Autorisierung erfolgreich abgeschlossen</string>
+    <string name="auth_title">Autorisierung</string>
+    <string name="auth_description">Liebes Elternteil,&lt;br/&gt;&lt;br/&gt;Um die Sicherheit der Daten zu gewährleisten, bitten wir Sie, die PESEL-Nummer des Schülers/der Schülerin anzugeben&lt;b&gt;%1$s&lt;/b&gt;Diese Angaben sind für die ordnungsgemäße Zuweisung des Zugriffs und den Schutz der personenbezogenen Daten gemäß den geltenden Vorschriften unerlässlich.&lt;br/&gt;&lt;br/&gt;Nach der Eingabe der Daten werden diese überprüft, um sicherzustellen, dass nur berechtigte Personen Zugang zum VULCAN-System erhalten. Wenn Sie Zweifel oder Probleme haben, wenden Sie sich bitte an den Administrator des Schülerkalenders, um die Situation zu klären.&lt;br/&gt;&lt;br/&gt;Wir halten die höchsten Standards für den Schutz personenbezogener Daten ein und gewährleisten, dass alle bereitgestellten Informationen sicher sind. Die Wulkanowy-App speichert und verarbeitet die PESEL-Nummer nicht.&lt;br/&gt;&lt;br/&gt;Wir erinnern Sie daran, dass die Angabe vollständiger und korrekter Daten obligatorisch und notwendig für die Nutzung des VULCAN-Systems ist.</string>
+    <string name="auth_button_skip">Vorerst überspringen</string>
    <!--Captcha-->
-    <string name="captcha_dialog_title">VULCAN\'s website requires verification</string>
-    <string name="captcha_dialog_description"><b>Why am I seeing this?</b>\nThe register website from which Wulkanowy downloads data displays the same screen as above, so Wulkanowy must also show it to be able to download data from this website. There\'s no way around it</string>
-    <string name="captcha_verified_message">Verified successfully</string>
+    <string name="captcha_dialog_title">VULCAN\'s Website erfordert Überprüfung</string>
+    <string name="captcha_dialog_description"><b>Warum sehe ich das?</b>\nDie Website des Registers, von der Wulkanowy Daten herunterlädt, zeigt denselben Bildschirm wie oben an, so dass Wulkanowy ihn ebenfalls anzeigen muss, um Daten von dieser Website herunterladen zu können. Es gibt keinen Ausweg</string>
+    <string name="captcha_verified_message">Erfolgreich verifiziert</string>
    <!--Errors-->
    <string name="error_no_internet">Keine Internetverbindung</string>
    <string name="error_invalid_device_datetime">Es ist ein Fehler aufgetreten. Überprüfen Sie Ihre Geräteuhr</string>
-    <string name="error_account_inactive">This account is inactive. Try logging in again</string>
+    <string name="error_account_inactive">Dieses Konto ist inaktiv. Versuchen Sie, sich erneut anzumelden</string>
    <string name="error_timeout">Registrierungsverbindung fehlgeschlagen. Server können überlastet sein. Bitte versuchen Sie es später noch einmal</string>
    <string name="error_login_failed">Das Laden der Daten ist fehlgeschlagen. Bitte versuchen Sie es später noch einmal</string>
-    <string name="error_password_invalid">Your password has expired or been changed. Please log in again</string>
+    <string name="error_password_invalid">Ihr Passwort ist abgelaufen oder wurde geändert. Bitte melden Sie sich erneut an</string>
    <string name="error_password_change_required">Passwortänderung für Registrierung erforderlich</string>
    <string name="error_service_unavailable">Wartung im Gange UONET + Klassenbuch. Versuchen Sie es später noch einmal</string>
    <string name="error_unknown_uonet">Unbekannter UONET + Registerfehler. Versuchen Sie es später erneut</string>
    <string name="error_unknown_app">Unbekannter Anwendungsfehler. Bitte versuchen Sie es später noch einmal</string>
-    <string name="error_cloudflare_captcha">Captcha verification required</string>
+    <string name="error_cloudflare_captcha">Captcha-Verifizierung erforderlich</string>
    <string name="error_unknown">Ein unerwarteter Fehler ist aufgetreten</string>
    <string name="error_feature_disabled">Funktion, die von Ihrer Schule deaktiviert wurde</string>
    <string name="error_feature_not_available">Feature in diesem Modus nicht verfügbar</string>
    <string name="error_field_required">Dieses Feld ist erforderlich</string>
    <!-- Mute system -->
-    <string name="message_mute">Mute</string>
-    <string name="message_unmute">Unmute</string>
-    <string name="message_mute_success">You have muted this user</string>
-    <string name="message_unmute_success">You have unmuted this user</string>
+    <string name="message_mute">Stumm</string>
+    <string name="message_unmute">Stummschaltung aufheben</string>
+    <string name="message_mute_success">Sie haben diesen Benutzer stummgeschaltet</string>
+    <string name="message_unmute_success">Sie haben die Stummschaltung dieses Benutzers aufgehoben</string>
 </resources>
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Faierbel	2bae532f6d	Merge branch 'develop' into bugfix/classid-zero	2024-05-05 10:46:47 +02:00
dependabot[bot]	dbfe5c8918	Bump com.android.tools.build:gradle from 8.3.2 to 8.4.0 (#2539 )	2024-05-05 08:27:41 +00:00
dependabot[bot]	c697ca7ad1	Bump androidx.fragment:fragment-ktx from 1.6.2 to 1.7.0 (#2538 )	2024-05-05 08:27:28 +00:00
dependabot[bot]	1b00f4e518	Bump about_libraries from 11.1.3 to 11.1.4 (#2540 )	2024-05-05 08:27:10 +00:00
dependabot[bot]	fb77bf882f	Bump androidx.viewpager2:viewpager2 from 1.1.0-beta02 to 1.1.0-rc01 (#2542 )	2024-05-05 08:26:55 +00:00
dependabot[bot]	466ebbef3a	Bump com.google.firebase:firebase-bom from 32.8.1 to 33.0.0 (#2544 )	2024-05-05 08:26:29 +00:00
dependabot[bot]	458a4c8164	Bump androidx.core:core-ktx from 1.13.0 to 1.13.1 (#2545 )	2024-05-05 08:26:14 +00:00
Mikołaj Pich	0363c0854f	Merge branch 'release/2.6.1' into develop	2024-05-02 15:20:56 +02:00
Mikołaj Pich	233ddc955b	Version 2.6.1	2024-05-02 15:20:45 +02:00
Mikołaj Pich	065c711f91	Add missing release client_info definition to conform gms plugin in hms release (#2537 )	2024-05-02 14:10:33 +02:00
Mikołaj Pich	49655c11c9	Revert "Bump com.google.android.gms:play-services-ads from 22.6.0 to 23.0.0 (…" (#2536 ) This reverts commit `a7c2009e49`.	2024-05-02 12:43:03 +02:00
Mikołaj Pich	38fd4eda22	Merge branch 'release/2.6.0' into develop	2024-05-01 22:30:53 +02:00
Mikołaj Pich	b71630246a	Version 2.6.0	2024-05-01 22:30:41 +02:00
Rafał Borcz	fd2eac1f08	New Crowdin updates (#2535 )	2024-05-01 19:28:49 +02:00
Damian Czupryn	1545ff65d3	CS and SK listing update (#2534 )	2024-05-01 19:07:41 +02:00
Rafał Borcz	ff32c82851	New Crowdin updates (#2532 ) Co-authored-by: Mikołaj Pich <m.pich@outlook.com>	2024-05-01 18:59:57 +02:00
Mikołaj Pich	d531a94594	Update screenshots (#2533 )	2024-05-01 18:50:57 +02:00
Rafał Borcz	71ab9586ac	Add admin message to LoginStudentSelect and LoginSymbol (#2531 ) Co-authored-by: Mikołaj Pich <m.pich@outlook.com>	2024-05-01 16:57:31 +02:00
Rafał Borcz	e1a19be06c	New Crowdin updates (#2530 )	2024-05-01 12:29:41 +02:00
Michael	6f2168d641	Additional lessons in timetable view (#2491 ) Co-authored-by: Mikołaj Pich <m.pich@outlook.com>	2024-04-26 23:33:45 +02:00
Rafał Borcz	cde2121b60	New Crowdin updates (#2527 )	2024-04-26 22:05:46 +02:00
Mikołaj Pich	a0bc37e826	Merge branch 'bugfix/2.5.8' into develop	2024-04-25 12:45:26 +02:00
Mikołaj Pich	f983a23b1a	Version 2.5.8	2024-04-25 12:45:09 +02:00
Mikołaj Pich	6a1851da13	Bump sdk to 2.5.8-SNAPSHOT	2024-04-25 09:26:47 +02:00
Michael	ad5381ce34	Fix race condition of showing empty view in timetable (#2486 ) Co-authored-by: Mikołaj Pich <m.pich@outlook.com>	2024-04-24 22:46:55 +02:00
Michael	dbc7587741	Add settings button to attendance calculator (#2492 )	2024-04-24 22:44:59 +02:00
Rafał Borcz	bc3aa7b8dc	New Crowdin updates (#2526 )	2024-04-24 22:28:16 +02:00
Rafał Borcz	6bf6a9da11	New Crowdin updates (#2480 )	2024-04-24 19:27:11 +02:00
Mikołaj Pich	ab175bdd9a	Merge branch 'bugfix/2.5.7' into develop	2024-04-22 22:42:22 +02:00
Mikołaj Pich	2816d7217a	Version 2.5.6	2024-04-22 00:39:44 +02:00
Mikołaj Pich	2fa868173b	Show graduated students on top of student select items list	2024-04-22 00:39:44 +02:00
Mikołaj Pich	622c75bb42	Don't display brackets in login student select items when schoolShortName is blank	2024-04-22 00:39:44 +02:00
Mikołaj Pich	2121125283	Migrate away from userLoginId to studentId due to vulcan last changes	2024-04-22 00:39:44 +02:00
Mikołaj Pich	c72a117e34	Bump sdk to 2.5.6-SNAPSHOT	2024-04-22 00:39:44 +02:00
dependabot[bot]	860095e862	Bump androidx.activity:activity-ktx from 1.8.2 to 1.9.0 (#2522 )	2024-04-21 02:31:28 +00:00
dependabot[bot]	ff9be43291	Bump org.apache.commons:commons-text from 1.11.0 to 1.12.0 (#2523 )	2024-04-21 02:25:16 +00:00
dependabot[bot]	a487378daf	Bump androidx.core:core-ktx from 1.12.0 to 1.13.0 (#2521 )	2024-04-21 02:24:04 +00:00
Faierbel	157e04b239	Add clearing all tables dependent on classId	2024-04-21 04:01:21 +02:00
Faierbel	2a0ac7f91e	Add test for StudentDao	2024-04-14 17:48:44 +02:00
Faierbel	d7b1a08098	Merge branch 'develop' into bugfix/classid-zero	2024-04-14 16:32:24 +02:00
dependabot[bot]	895f5cbb76	Bump com.android.tools.build:gradle from 8.2.2 to 8.3.2 (#2517 )	2024-04-14 14:24:38 +00:00
Faierbel	985be92a4d	Fix tests	2024-04-14 02:57:05 +02:00
Faierbel	6616a313e2	Fix checking classId condition when is eduOne	2024-04-14 02:48:26 +02:00
Rafał Borcz	8b9b1460ab	Update AuthDialog text (#2506 )	2024-04-13 22:03:23 +02:00
dependabot[bot]	7edd3df074	Bump about_libraries from 11.1.1 to 11.1.3 (#2518 )	2024-04-13 19:56:16 +00:00
dependabot[bot]	16c51f7b07	Bump com.google.firebase:firebase-bom from 32.8.0 to 32.8.1 (#2519 )	2024-04-13 19:55:50 +00:00
Rafał Borcz	7a3a97447f	Add isAdded check in AdditionalLessonAddDialog (#2515 )	2024-04-08 20:51:05 +02:00
dependabot[bot]	b500d8e204	Bump org.sonarsource.scanner.gradle:sonarqube-gradle-plugin (#2511 )	2024-04-08 18:09:38 +00:00
dependabot[bot]	c34a369286	Bump org.robolectric:robolectric from 4.11.1 to 4.12.1 (#2514 )	2024-04-08 18:08:20 +00:00
dependabot[bot]	b9f3ab2e56	Bump com.squareup.retrofit2:retrofit from 2.10.0 to 2.11.0 (#2513 )	2024-04-08 18:08:01 +00:00
dependabot[bot]	6b59973624	Bump hilt_version from 2.51 to 2.51.1 (#2510 )	2024-04-08 17:41:28 +00:00
Mikołaj Pich	d18485293d	Merge branch 'bugfix/2.5.5' into develop	2024-03-26 20:38:07 +01:00
Mikołaj Pich	596e8df4fc	Merge branch 'bugfix/2.5.4' into develop	2024-03-26 13:29:54 +01:00
dependabot[bot]	f13ce6e2b4	Bump com.squareup.retrofit2:retrofit from 2.9.0 to 2.10.0 (#2502 )	2024-03-25 12:32:28 +00:00
dependabot[bot]	8c10606b61	Bump about_libraries from 11.1.0 to 11.1.1 (#2503 )	2024-03-25 12:32:07 +00:00
dependabot[bot]	7fda4276d6	Bump com.google.firebase:firebase-bom from 32.7.4 to 32.8.0 (#2504 )	2024-03-25 12:31:46 +00:00
Mikołaj Pich	7993366bfc	Merge branch 'bugfix/2.5.3' into develop	2024-03-25 00:05:11 +01:00
Mikołaj Pich	27eb0588d7	Merge branch 'bugfix/2.5.2' into develop	2024-03-20 02:24:26 +01:00
Michael	34d34a050a	Add widget updating on data sync (#2487 ) --------- Co-authored-by: Faierbel <RafalBO99@outlook.com>	2024-03-17 21:06:40 +01:00
Michael	961bc24f27	Add docs to Resource, changing networkBoundResource generics naming (#2483 )	2024-03-13 19:13:56 +01:00
Michael	8a90b61b97	Refactor networkBoundResource (#2482 ) --------- Co-authored-by: Faierbel <RafalBO99@outlook.com>	2024-03-13 13:01:00 +01:00
Rafał Borcz	6a8f6f9496	Add WulkanowySdkFactory (#2479 )	2024-03-11 23:38:39 +01:00
Rafał Borcz	afb5ae741c	Fix lateness color in attendance (#2481 )	2024-03-11 23:38:17 +01:00
Michael	95e41b5570	Handle subjects with no attendances in attendance calculator better (#2478 ) --------- Co-authored-by: Faierbel <RafalBO99@outlook.com>	2024-03-11 19:19:24 +00:00
Rafał Borcz	eb6fdd900e	New Crowdin updates (#2470 )	2024-03-11 11:47:13 +01:00
Rafał Borcz	88def5eff8	Remove savedInstance in MessagePreviewFragment (#2477 )	2024-03-11 11:45:28 +01:00
Rafał Borcz	0e99c81eb8	Add missing onDetachView in AutDialog (#2476 )	2024-03-11 11:45:15 +01:00
Rafał Borcz	38c00ddab5	Fix task description color crash (#2475 )	2024-03-11 11:44:59 +01:00
Rafał Borcz	c72cc39920	Separate strings from array to avoid duplications (#2473 )	2024-03-09 21:01:58 +01:00
Rafał Borcz	4ef9fb1f28	Update preferences strings (#2472 )	2024-03-09 10:05:12 +01:00
Rafał Borcz	5dd5697f65	Remove firebase disable flag (#2471 )	2024-03-09 10:03:36 +01:00
dependabot[bot]	a7c2009e49	Bump com.google.android.gms:play-services-ads from 22.6.0 to 23.0.0 (#2469 )	2024-03-08 20:16:03 +00:00
dependabot[bot]	a71ef4a4b2	Bump com.google.firebase:firebase-bom from 32.7.3 to 32.7.4 (#2467 )	2024-03-08 20:14:33 +00:00
dependabot[bot]	30413086fc	Bump kotlin_version from 1.9.22 to 1.9.23 (#2466 )	2024-03-08 20:13:58 +00:00
Rafał Borcz	98ddf97855	Update gradle wrapper to 8.6 (#2468 )	2024-03-08 20:57:26 +01:00
Michael	8f5a210ec7	Add attendance calculator (#1597 ) --------- Co-authored-by: Mikołaj Pich <m.pich@outlook.com> Co-authored-by: Faierbel <RafalBO99@outlook.com>	2024-03-08 20:36:43 +01:00
Mikołaj Pich	ce09b07cfd	Merge branch 'release/2.5.1' into develop	2024-03-03 11:19:48 +01:00