1.8.0

Удалёно большинство классов относящихся к CustomLessonViewService:
- AlarmReceiver
- BootCompletedBroadcastReceiver
- ScheduleClvAlarm
- StartClvService

CustomLessonViewService теперь запускается сервером в определённое время.

Переработаны формы авторизации и регистрации.

В форме регистрации теперь можно выбрать свою группу из выпадающего списка, а не вводить вручную.

Исправлен недочёт, из-за которого можно было вернуться к форме авторизации нажимая кнопку назад (или делать свайп для того же эффекта).

Немного изменён логотип приложения.

Изменена иконка уведомлений на самодельную.

.idea/appInsightsSettings.xml

@@ -15,8 +15,27 @@
                   <option name="projectNumber" value="946974192625" />
                 </ConnectionSetting>
               </option>
+              <option name="devices">
+                <list>
+                  <DeviceSetting>
+                    <option name="deviceType" value="Phone" />
+                    <option name="displayName" value="Xiaomi (2311DRK48G)" />
+                    <option name="manufacturer" value="Xiaomi" />
+                    <option name="model" value="2311DRK48G" />
+                  </DeviceSetting>
+                </list>
+              </option>
               <option name="signal" value="SIGNAL_UNSPECIFIED" />
               <option name="timeIntervalDays" value="THIRTY_DAYS" />
+              <option name="versions">
+                <list>
+                  <VersionSetting>
+                    <option name="buildVersion" value="13" />
+                    <option name="displayName" value="1.7.1 (13)" />
+                    <option name="displayVersion" value="1.7.1" />
+                  </VersionSetting>
+                </list>
+              </option>
               <option name="visibilityType" value="ALL" />
             </InsightsFilterSettings>
           </value>

.idea/deploymentTargetSelector.xml

@@ -4,6 +4,14 @@
     <selectionStates>
       <SelectionState runConfigName="app">
         <option name="selectionMode" value="DROPDOWN" />
+        <DropdownSelection timestamp="2024-10-10T18:25:08.106861775Z">
+          <Target type="DEFAULT_BOOT">
+            <handle>
+              <DeviceId pluginId="PhysicalDevice" identifier="serial=482a22d" />
+            </handle>
+          </Target>
+        </DropdownSelection>
+        <DialogSelection />
       </SelectionState>
     </selectionStates>
   </component>

app/build.gradle.kts

@@ -33,8 +33,8 @@ android {
         applicationId = "ru.n08i40k.polytechnic.next"
         minSdk = 26
         targetSdk = 35
-        versionCode = 13
+        versionCode = 15
-        versionName = "1.7.1"
+        versionName = "1.8.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {

app/src/main/AndroidManifest.xml

@@ -12,31 +12,17 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE" />
 
-    <!-- For schedule CLV service-->
-    <!--    <uses-permission android:name="android.permission.USE_EXACT_ALARM" />-->
-    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
-
     <application
         android:name=".PolytechnicApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
-        android:icon="@drawable/ic_launcher"
+        android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
-        android:roundIcon="@drawable/ic_launcher_round"
+        android:roundIcon="@mipmap/ic_launcher_round"
         android:theme="@style/Theme.PolytechnicNext"
         tools:targetApi="35">
 
-        <receiver
-            android:name=".receiver.BootCompletedBroadcastReceiver"
-            android:exported="false">
-            <intent-filter>
-                <action android:name="android.intent.action.BOOT_COMPLETED" />
-            </intent-filter>
-        </receiver>
-
-        <receiver android:name=".receiver.AlarmReceiver" />
-
         <service
             android:name=".service.MyFirebaseMessagingService"
             android:exported="false">

app/src/main/java/ru/n08i40k/polytechnic/next/PolytechnicApplication.kt

@@ -1,20 +1,13 @@
 package ru.n08i40k.polytechnic.next
 
 import android.Manifest
-import android.app.AlarmManager
 import android.app.Application
-import android.app.PendingIntent
-import android.content.Context
-import android.content.Intent
 import android.content.pm.PackageManager
 import android.os.Build
 import androidx.core.content.ContextCompat
 import dagger.hilt.android.HiltAndroidApp
 import ru.n08i40k.polytechnic.next.data.AppContainer
-import ru.n08i40k.polytechnic.next.model.Group
-import ru.n08i40k.polytechnic.next.receiver.AlarmReceiver
 import ru.n08i40k.polytechnic.next.utils.or
-import java.util.Calendar
 import javax.inject.Inject
 
 @HiltAndroidApp
@@ -34,84 +27,4 @@ class PolytechnicApplication : Application() {
                 || ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS)
                 == PackageManager.PERMISSION_GRANTED)
     }
-
-    private fun getDate(group: Group): Calendar? {
-        val javaCalendar = Calendar.getInstance()
-        val currentMinutes = javaCalendar.get(Calendar.HOUR_OF_DAY) * 60 +
-                javaCalendar.get(Calendar.MINUTE)
-        var startDayIdx = javaCalendar.get(Calendar.DAY_OF_WEEK) - 2
-
-        println("Current day is $startDayIdx")
-
-        val currentDay = group.days[startDayIdx]
-        if (currentDay != null) {
-            val firstLesson = currentDay.first
-
-            if (firstLesson == null || firstLesson.time.start < currentMinutes) {
-                println("Current day already started or ended!")
-                ++startDayIdx
-            }
-        }
-
-        for (dayIdx in startDayIdx..5) {
-            println("Trying $dayIdx day...")
-            val day = group.days[dayIdx] ?: continue
-            println("Day isn't null")
-            val firstLesson = day.first ?: continue
-            println("Day isn't empty")
-
-            val executeMinutes = (firstLesson.time.start - 15).coerceAtLeast(0)
-
-            println("Schedule minutes at $executeMinutes")
-
-            return Calendar.getInstance().apply {
-                set(Calendar.DAY_OF_WEEK, dayIdx + 2) // sunday is first + index from 0
-                set(Calendar.HOUR_OF_DAY, executeMinutes / 60)
-                set(Calendar.MINUTE, executeMinutes % 60)
-                set(Calendar.SECOND, 0)
-//                set(Calendar.MINUTE, get(Calendar.MINUTE) + 1)
-            }
-        }
-
-        return null
-    }
-
-    fun scheduleClvService(group: Group) {
-        // -1 = вс
-        //  0 = пн
-        //  1 = вт
-        //  2 = ср
-        //  3 = чт
-        //  4 = пт
-        //  5 = сб
-
-        println("Getting date...")
-
-        val date = getDate(group) ?: return
-
-        println("Alarm on this week!")
-
-        val alarmManager = applicationContext
-            .getSystemService(Context.ALARM_SERVICE) as? AlarmManager
-
-        val pendingIntent =
-            Intent(applicationContext, AlarmReceiver::class.java).let {
-                PendingIntent.getBroadcast(
-                    applicationContext,
-                    IntentRequestCodes.ALARM_CLV,
-                    it,
-                    PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
-                )
-            }
-
-        if (alarmManager != null)
-            println("Alarm manager isn't null.")
-
-        alarmManager?.cancel(pendingIntent)
-        alarmManager?.set(
-            AlarmManager.RTC_WAKEUP,
-            date.timeInMillis,
-            pendingIntent
-        )
-    }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/data/schedule/impl/RemoteScheduleRepository.kt

@@ -2,30 +2,18 @@ package ru.n08i40k.polytechnic.next.data.schedule.impl
 
 import android.content.Context
 import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.flow.first
-import kotlinx.coroutines.flow.map
-import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.withContext
 import ru.n08i40k.polytechnic.next.data.MyResult
 import ru.n08i40k.polytechnic.next.data.schedule.ScheduleRepository
 import ru.n08i40k.polytechnic.next.model.Group
 import ru.n08i40k.polytechnic.next.network.request.schedule.ScheduleGet
 import ru.n08i40k.polytechnic.next.network.tryFuture
-import ru.n08i40k.polytechnic.next.settings.settingsDataStore
 
 class RemoteScheduleRepository(private val context: Context) : ScheduleRepository {
-    override suspend fun getGroup(): MyResult<Group> {
+    override suspend fun getGroup(): MyResult<Group> =
-        return withContext(Dispatchers.IO) {
+        withContext(Dispatchers.IO) {
-            val groupName = runBlocking {
-                context.settingsDataStore.data.map { settings -> settings.group }.first()
-            }
-
-            if (groupName.isEmpty())
-                return@withContext MyResult.Failure(IllegalArgumentException("No group name provided!"))
-
             val response = tryFuture {
                 ScheduleGet(
-                    ScheduleGet.RequestDto(groupName),
                     context,
                     it,
                     it
@@ -37,5 +25,4 @@ class RemoteScheduleRepository(private val context: Context) : ScheduleRepositor
                 is MyResult.Success -> MyResult.Success(response.data.group)
             }
         }
-    }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/network/RequestBase.kt

@@ -20,7 +20,6 @@ open class RequestBase(
     override fun getHeaders(): MutableMap<String, String> {
         val headers = mutableMapOf<String, String>()
         headers["Content-Type"] = "application/json; charset=utf-8"
-        headers["version"] = "1"
 
         return headers
     }

app/src/main/java/ru/n08i40k/polytechnic/next/network/RequestUtils.kt

@@ -27,3 +27,10 @@ fun <T> tryGet(future: RequestFuture<T>): MyResult<T> {
         MyResult.Failure(exception)
     }
 }
+
+fun unwrapException(exception: Exception): Throwable {
+    if (exception is ExecutionException && exception.cause != null)
+        return exception.cause!!
+    
+    return exception
+}

app/src/main/java/ru/n08i40k/polytechnic/next/network/request/CachedRequest.kt

@@ -26,7 +26,7 @@ open class CachedRequest(
     private val listener: Response.Listener<String>,
     errorListener: Response.ErrorListener?,
 ) : AuthorizedRequest(context, method, url, {
-    runBlocking {
+    runBlocking(Dispatchers.IO) {
         (context as PolytechnicApplication)
             .container.networkCacheRepository.put(url, it)
     }

app/src/main/java/ru/n08i40k/polytechnic/next/network/request/auth/AuthSignIn.kt

@@ -7,7 +7,7 @@ import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import ru.n08i40k.polytechnic.next.network.RequestBase
 
-class AuthLogin(
+class AuthSignIn(
     private val data: RequestDto,
     context: Context,
     listener: Response.Listener<ResponseDto>,
@@ -23,9 +23,16 @@ class AuthLogin(
     data class RequestDto(val username: String, val password: String)
 
     @Serializable
-    data class ResponseDto(val id: String, val accessToken: String)
+    data class ResponseDto(val id: String, val accessToken: String, val group: String)
 
     override fun getBody(): ByteArray {
         return Json.encodeToString(data).toByteArray()
     }
+
+    override fun getHeaders(): MutableMap<String, String> {
+        val headers = super.getHeaders()
+        headers["version"] = "2"
+
+        return headers
+    }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/network/request/auth/AuthSignUp.kt

@@ -8,7 +8,7 @@ import kotlinx.serialization.json.Json
 import ru.n08i40k.polytechnic.next.model.UserRole
 import ru.n08i40k.polytechnic.next.network.RequestBase
 
-class AuthRegister(
+class AuthSignUp(
     private val data: RequestDto,
     context: Context,
     listener: Response.Listener<ResponseDto>,

app/src/main/java/ru/n08i40k/polytechnic/next/network/request/schedule/ScheduleGet.kt

@@ -3,13 +3,11 @@ package ru.n08i40k.polytechnic.next.network.request.schedule
 import android.content.Context
 import com.android.volley.Response
 import kotlinx.serialization.Serializable
-import kotlinx.serialization.encodeToString
 import kotlinx.serialization.json.Json
 import ru.n08i40k.polytechnic.next.model.Group
 import ru.n08i40k.polytechnic.next.network.request.CachedRequest
 
 class ScheduleGet(
-    private val data: RequestDto,
     context: Context,
     listener: Response.Listener<ResponseDto>,
     errorListener: Response.ErrorListener? = null
@@ -29,8 +27,4 @@ class ScheduleGet(
         val group: Group,
         val lastChangedDays: ArrayList<Int>,
     )
-
-    override fun getBody(): ByteArray {
-        return Json.encodeToString(data).toByteArray()
-    }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/network/request/schedule/ScheduleGetCacheStatus.kt

@@ -24,4 +24,11 @@ class ScheduleGetCacheStatus(
         val lastCacheUpdate: Long,
         val lastScheduleUpdate: Long,
     )
+
+    override fun getHeaders(): MutableMap<String, String> {
+        val headers = super.getHeaders()
+        headers["version"] = "1"
+
+        return headers
+    }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/network/request/schedule/ScheduleGetGroupNames.kt

@@ -4,13 +4,13 @@ import android.content.Context
 import com.android.volley.Response
 import kotlinx.serialization.Serializable
 import kotlinx.serialization.json.Json
-import ru.n08i40k.polytechnic.next.network.request.CachedRequest
+import ru.n08i40k.polytechnic.next.network.RequestBase
 
 class ScheduleGetGroupNames(
     context: Context,
     listener: Response.Listener<ResponseDto>,
     errorListener: Response.ErrorListener? = null
-) : CachedRequest(
+) : RequestBase(
     context,
     Method.GET,
     "schedule/get-group-names",

app/src/main/java/ru/n08i40k/polytechnic/next/network/request/schedule/ScheduleUpdate.kt

@@ -25,4 +25,11 @@ class ScheduleUpdate(
     override fun getBody(): ByteArray {
         return Json.encodeToString(data).toByteArray()
     }
+
+    override fun getHeaders(): MutableMap<String, String> {
+        val headers = super.getHeaders()
+        headers["version"] = "1"
+
+        return headers
+    }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/receiver/AlarmReceiver.kt

@@ -1,42 +0,0 @@
-package ru.n08i40k.polytechnic.next.receiver
-
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import androidx.work.Constraints
-import androidx.work.NetworkType
-import androidx.work.OneTimeWorkRequestBuilder
-import androidx.work.WorkManager
-import ru.n08i40k.polytechnic.next.service.CurrentLessonViewService
-import ru.n08i40k.polytechnic.next.work.ScheduleClvAlarm
-
-class AlarmReceiver : BroadcastReceiver() {
-    override fun onReceive(context: Context?, intent: Intent?) {
-        println("Hi from AlarmReceiver")
-
-        if (intent == null) {
-            println("No intend provided!")
-            return
-        }
-
-        if (context == null) {
-            println("No context provided!")
-            return
-        }
-        println(intent.action)
-
-        val constraints = Constraints.Builder()
-            .setRequiredNetworkType(NetworkType.CONNECTED)
-            .build()
-
-        val rescheduleRequest = OneTimeWorkRequestBuilder<ScheduleClvAlarm>()
-            .setConstraints(constraints)
-            .build()
-
-        WorkManager
-            .getInstance(context)
-            .enqueue(rescheduleRequest)
-
-        CurrentLessonViewService.startService(context.applicationContext)
-    }
-}

app/src/main/java/ru/n08i40k/polytechnic/next/receiver/BootCompletedBroadcastReceiver.kt

@@ -1,45 +0,0 @@
-package ru.n08i40k.polytechnic.next.receiver
-
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import androidx.work.Constraints
-import androidx.work.NetworkType
-import androidx.work.OneTimeWorkRequestBuilder
-import androidx.work.WorkManager
-import ru.n08i40k.polytechnic.next.work.ScheduleClvAlarm
-import java.util.logging.Logger
-
-class BootCompletedBroadcastReceiver : BroadcastReceiver() {
-    override fun onReceive(context: Context?, intent: Intent?) {
-        val logger = Logger.getLogger("BootCompletedBroadcastReceiver")
-
-        if (context == null) {
-            logger.warning("No context provided!")
-            return
-        }
-
-        if (intent == null) {
-            logger.warning("No intend provided!")
-            return
-        }
-
-        if (intent.action != "android.intent.action.BOOT_COMPLETED") {
-            logger.warning("Strange intent action passed!")
-            logger.warning(intent.action)
-            return
-        }
-
-        val constraints = Constraints.Builder()
-            .setRequiredNetworkType(NetworkType.CONNECTED)
-            .build()
-
-        val request = OneTimeWorkRequestBuilder<ScheduleClvAlarm>()
-            .setConstraints(constraints)
-            .build()
-
-        WorkManager
-            .getInstance(context)
-            .enqueue(request)
-    }
-}

app/src/main/java/ru/n08i40k/polytechnic/next/service/CurrentLessonViewService.kt

@@ -3,25 +3,24 @@ package ru.n08i40k.polytechnic.next.service
 import android.app.Notification
 import android.app.NotificationManager
 import android.app.Service
-import android.content.Context
 import android.content.Intent
 import android.os.Build
 import android.os.Handler
 import android.os.IBinder
 import android.os.Looper
 import androidx.core.app.NotificationCompat
-import androidx.work.OneTimeWorkRequestBuilder
+import androidx.core.content.ContextCompat.startForegroundService
-import androidx.work.WorkManager
 import ru.n08i40k.polytechnic.next.NotificationChannels
 import ru.n08i40k.polytechnic.next.PolytechnicApplication
 import ru.n08i40k.polytechnic.next.R
+import ru.n08i40k.polytechnic.next.data.MyResult
 import ru.n08i40k.polytechnic.next.model.Day
 import ru.n08i40k.polytechnic.next.model.Group
 import ru.n08i40k.polytechnic.next.model.Lesson
 import ru.n08i40k.polytechnic.next.utils.fmtAsClock
 import ru.n08i40k.polytechnic.next.utils.getDayMinutes
-import ru.n08i40k.polytechnic.next.work.StartClvService
 import java.util.Calendar
+import java.util.logging.Logger
 
 @Suppress("UNNECESSARY_NOT_NULL_ASSERTION")
 class CurrentLessonViewService : Service() {
@@ -30,19 +29,31 @@ class CurrentLessonViewService : Service() {
         private const val NOTIFICATION_END_ID = NOTIFICATION_STATUS_ID + 1
         private const val UPDATE_INTERVAL = 60_000L
 
-        fun startService(appContext: Context) {
+        suspend fun startService(application: PolytechnicApplication) {
-            if (!(appContext as PolytechnicApplication).hasNotificationPermission())
+            if (!application.hasNotificationPermission())
                 return
 
-            if (Calendar.getInstance()
+            val schedule =
-                    .get(Calendar.HOUR_OF_DAY) * 60 + Calendar.getInstance()
+                application
-                    .get(Calendar.MINUTE) < 420)
+                    .container
+                    .scheduleRepository
+                    .getGroup()
+
+            if (schedule is MyResult.Failure)
                 return
 
-            val request = OneTimeWorkRequestBuilder<StartClvService>()
+            val intent = Intent(application, CurrentLessonViewService::class.java)
-                .build()
+                .apply {
+                    putExtra("group", (schedule as MyResult.Success).data)
+                }
 
-            WorkManager.getInstance(appContext).enqueue(request)
+            application.stopService(
+                Intent(
+                    application,
+                    CurrentLessonViewService::class.java
+                )
+            )
+            startForegroundService(application, intent)
         }
     }
 
@@ -51,7 +62,10 @@ class CurrentLessonViewService : Service() {
     private val handler = Handler(Looper.getMainLooper())
     private val updateRunnable = object : Runnable {
         override fun run() {
+            val logger = Logger.getLogger("CLV.updateRunnable")
+
             if (day == null || day!!.nonNullIndices.isEmpty()) {
+                logger.warning("Stopping, because day is null or empty!")
                 stopSelf()
                 return
             }
@@ -74,7 +88,7 @@ class CurrentLessonViewService : Service() {
             if (currentLesson == null && nextLesson == null) {
                 val notification = NotificationCompat
                     .Builder(applicationContext, NotificationChannels.LESSON_VIEW)
-                    .setSmallIcon(R.drawable.logo)
+                    .setSmallIcon(R.drawable.schedule)
                     .setPriority(NotificationCompat.PRIORITY_HIGH)
                     .setContentTitle(getString(R.string.lessons_end_notification_title))
                     .setContentText(getString(R.string.lessons_end_notification_description))
@@ -146,7 +160,7 @@ class CurrentLessonViewService : Service() {
     ): Notification {
         return NotificationCompat
             .Builder(applicationContext, NotificationChannels.LESSON_VIEW)
-            .setSmallIcon(R.drawable.logo)
+            .setSmallIcon(R.drawable.schedule)
             .setContentTitle(title ?: getString(R.string.lesson_notification_title))
             .setContentText(description ?: getString(R.string.lesson_notification_description))
             .setPriority(NotificationCompat.PRIORITY_HIGH)
@@ -159,26 +173,29 @@ class CurrentLessonViewService : Service() {
         return getSystemService(NOTIFICATION_SERVICE) as NotificationManager
     }
 
-    private fun updateSchedule(group: Group?): Boolean {
+    private fun updateSchedule(group: Group?) {
+        val logger = Logger.getLogger("CLV")
+
         if (group == null) {
+            logger.warning("Stopping, because group is null")
             stopSelf()
-            return false
+            return
         }
 
         val currentDay = group.current
         if (currentDay == null || currentDay.nonNullIndices.isEmpty()) {
+            logger.warning("Stopping, because current day is null or empty")
             stopSelf()
-            return false
+            return
         }
 
-        if (this.day == null) {
         val nowMinutes = Calendar.getInstance().getDayMinutes()
-
+        if (nowMinutes < ((5 * 60) + 30)
-            if (currentDay.first!!.time.start - nowMinutes > 30
+            || currentDay.last!!.time.end < nowMinutes
-                || currentDay.last!!.time.end < nowMinutes) {
+        ) {
+            logger.warning("Stopping, because service started outside of acceptable time range!")
             stopSelf()
-                return false
+            return
-            }
         }
 
         this.day = currentDay
@@ -186,7 +203,7 @@ class CurrentLessonViewService : Service() {
         this.handler.removeCallbacks(updateRunnable)
         updateRunnable.run()
 
-        return true
+        logger.info("Running...")
     }
 
     override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
@@ -201,7 +218,7 @@ class CurrentLessonViewService : Service() {
         val notification = createNotification()
         startForeground(NOTIFICATION_STATUS_ID, notification)
 
-        if (!updateSchedule(
+        updateSchedule(
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
                 intent.getParcelableExtra("group", Group::class.java)
             } else {
@@ -209,8 +226,6 @@ class CurrentLessonViewService : Service() {
                 intent.getParcelableExtra("group")
             }
         )
-        )
-            updateRunnable.run()
 
         return START_STICKY
     }

app/src/main/java/ru/n08i40k/polytechnic/next/service/MyFirebaseMessagingService.kt

@@ -17,13 +17,19 @@ import androidx.work.WorkManager
 import androidx.work.workDataOf
 import com.google.firebase.messaging.FirebaseMessagingService
 import com.google.firebase.messaging.RemoteMessage
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
 import ru.n08i40k.polytechnic.next.NotificationChannels
+import ru.n08i40k.polytechnic.next.PolytechnicApplication
 import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.work.FcmSetTokenWorker
-import ru.n08i40k.polytechnic.next.work.ScheduleClvAlarm
 import java.time.Duration
 
 class MyFirebaseMessagingService : FirebaseMessagingService() {
+    val scope = CoroutineScope(Job() + Dispatchers.Main)
+
     override fun onNewToken(token: String) {
         super.onNewToken(token)
 
@@ -79,7 +85,6 @@ class MyFirebaseMessagingService : FirebaseMessagingService() {
             }
 
             notify(id.hashCode(), notification)
-            CurrentLessonViewService.startService(applicationContext)
         }
     }
 
@@ -90,7 +95,7 @@ class MyFirebaseMessagingService : FirebaseMessagingService() {
             "schedule-update" -> {
                 sendNotification(
                     NotificationChannels.SCHEDULE_UPDATE,
-                    R.drawable.logo,
+                    R.drawable.schedule,
                     getString(R.string.schedule_update_title),
                     getString(
                         if (message.data["replaced"] == "true")
@@ -101,24 +106,19 @@ class MyFirebaseMessagingService : FirebaseMessagingService() {
                     NotificationCompat.PRIORITY_DEFAULT,
                     message.data["etag"]
                 )
+            }
 
-                val constraints = Constraints.Builder()
+            "lessons-start" -> {
-                    .setRequiredNetworkType(NetworkType.CONNECTED)
+                scope.launch {
-                    .build()
+                    CurrentLessonViewService
-
+                        .startService(applicationContext as PolytechnicApplication)
-                val request = OneTimeWorkRequestBuilder<ScheduleClvAlarm>()
+                }
-                    .setConstraints(constraints)
-                    .build()
-
-                WorkManager
-                    .getInstance(applicationContext)
-                    .enqueue(request)
             }
 
             "app-update" -> {
                 sendNotification(
                     NotificationChannels.APP_UPDATE,
-                    R.drawable.logo,
+                    R.drawable.download,
                     getString(R.string.app_update_title, message.data["version"]),
                     getString(R.string.app_update_description),
                     NotificationCompat.PRIORITY_DEFAULT,

app/src/main/java/ru/n08i40k/polytechnic/next/ui/MainActivity.kt

@@ -36,7 +36,6 @@ import kotlinx.coroutines.launch
 import ru.n08i40k.polytechnic.next.NotificationChannels
 import ru.n08i40k.polytechnic.next.PolytechnicApplication
 import ru.n08i40k.polytechnic.next.R
-import ru.n08i40k.polytechnic.next.data.MyResult
 import ru.n08i40k.polytechnic.next.settings.settingsDataStore
 import ru.n08i40k.polytechnic.next.work.FcmUpdateCallbackWorker
 import ru.n08i40k.polytechnic.next.work.LinkUpdateWorker
@@ -101,21 +100,6 @@ class MainActivity : ComponentActivity() {
             requestPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
     }
 
-    private fun scheduleAlarm() {
-        lifecycleScope.launch {
-            val schedule = (applicationContext as PolytechnicApplication)
-                .container
-                .scheduleRepository
-                .getGroup()
-
-            if (schedule is MyResult.Failure)
-                return@launch
-
-            (applicationContext as PolytechnicApplication)
-                .scheduleClvService((schedule as MyResult.Success).data)
-        }
-    }
-
 
     fun scheduleLinkUpdate(intervalInMinutes: Long) {
         val tag = "schedule-update"
@@ -182,7 +166,6 @@ class MainActivity : ComponentActivity() {
         setupFirebaseConfig()
 
         handleUpdate()
-        scheduleAlarm()
 
         setContent {
             Box(Modifier.windowInsetsPadding(WindowInsets.safeContent.only(WindowInsetsSides.Top))) {

app/src/main/java/ru/n08i40k/polytechnic/next/ui/auth/AuthScreen.kt

@@ -1,504 +1,113 @@
 package ru.n08i40k.polytechnic.next.ui.auth
 
-import android.content.Context
+import androidx.compose.animation.core.FastOutSlowInEasing
-import androidx.compose.animation.core.animateFloatAsState
+import androidx.compose.animation.core.LinearOutSlowInEasing
+import androidx.compose.animation.core.tween
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.slideIn
+import androidx.compose.foundation.BorderStroke
 import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.layout.wrapContentSize
-import androidx.compose.material3.Button
 import androidx.compose.material3.Card
-import androidx.compose.material3.DropdownMenuItem
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.ExposedDropdownMenuBox
-import androidx.compose.material3.ExposedDropdownMenuDefaults
-import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.MenuAnchorType
-import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Scaffold
+import androidx.compose.material3.SnackbarDuration
 import androidx.compose.material3.SnackbarHost
 import androidx.compose.material3.SnackbarHostState
-import androidx.compose.material3.Text
-import androidx.compose.material3.TextButton
-import androidx.compose.material3.TextField
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.MutableState
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.graphicsLayer
 import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.platform.LocalFocusManager
-import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.Dp
+import androidx.compose.ui.unit.IntOffset
 import androidx.compose.ui.unit.dp
 import androidx.navigation.NavHostController
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
-import com.android.volley.AuthFailureError
-import com.android.volley.ClientError
-import com.android.volley.TimeoutError
-import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.runBlocking
-import ru.n08i40k.polytechnic.next.R
-import ru.n08i40k.polytechnic.next.model.UserRole
-import ru.n08i40k.polytechnic.next.model.UserRole.Companion.AcceptableUserRoles
-import ru.n08i40k.polytechnic.next.network.request.auth.AuthLogin
-import ru.n08i40k.polytechnic.next.network.request.auth.AuthRegister
-import ru.n08i40k.polytechnic.next.network.request.profile.ProfileMe
 import ru.n08i40k.polytechnic.next.settings.settingsDataStore
 
-@Preview(showBackground = true)
-@Composable
-private fun LoginForm(
-    mutableVisible: MutableState<Boolean> = mutableStateOf(true),
-    navController: NavHostController = rememberNavController(),
-    scope: CoroutineScope = rememberCoroutineScope(),
-    snackbarHostState: SnackbarHostState = remember { SnackbarHostState() },
-) {
-    val context = LocalContext.current
-    val focusManager = LocalFocusManager.current
-
-    val mutableIsLoading = remember { mutableStateOf(false) }
-
-    var username by remember { mutableStateOf("") }
-    var password by remember { mutableStateOf("") }
-    var visible by mutableVisible
-
-    Text(
-        text = stringResource(R.string.login_title),
-        modifier = Modifier.padding(10.dp),
-        style = MaterialTheme.typography.displaySmall,
-        fontWeight = FontWeight.ExtraBold
-    )
-
-    Spacer(modifier = Modifier.size(10.dp))
-
-    val mutableUsernameError = remember { mutableStateOf(false) }
-    val mutablePasswordError = remember { mutableStateOf(false) }
-
-    var usernameError by mutableUsernameError
-    var passwordError by mutablePasswordError
-
-    OutlinedTextField(
-        value = username,
-        singleLine = true,
-        onValueChange = {
-            username = it
-            usernameError = false
-        },
-        label = { Text(stringResource(R.string.username)) },
-        isError = usernameError
-    )
-
-    OutlinedTextField(
-        value = password,
-        singleLine = true,
-        visualTransformation = PasswordVisualTransformation(),
-        onValueChange = {
-            passwordError = false
-            password = it
-        },
-        label = { Text(stringResource(R.string.password)) },
-        isError = passwordError
-    )
-
-    TextButton(onClick = { visible = false }) {
-        Text(text = stringResource(R.string.not_registered))
-    }
-
-    Button(
-        enabled = !mutableIsLoading.value,
-        onClick = {
-            if (username.length < 4) usernameError = true
-            if (password.isEmpty()) passwordError = true
-
-            if (usernameError || passwordError) return@Button
-
-            tryLogin(
-                username,
-                password,
-                mutableUsernameError,
-                mutablePasswordError,
-                mutableIsLoading,
-                context,
-                snackbarHostState,
-                scope,
-                navController
-            )
-
-            focusManager.clearFocus()
-        }
-    ) {
-        Text(
-            text = stringResource(R.string.login),
-            style = MaterialTheme.typography.bodyLarge
-        )
-    }
-}
-
-@Preview(showBackground = true)
-@Composable
-private fun RegisterForm(
-    mutableVisible: MutableState<Boolean> = mutableStateOf(true),
-    navController: NavHostController = rememberNavController(),
-    scope: CoroutineScope = rememberCoroutineScope(),
-    snackbarHostState: SnackbarHostState = remember { SnackbarHostState() },
-) {
-    val context = LocalContext.current
-    val focusManager = LocalFocusManager.current
-
-    val mutableIsLoading = remember { mutableStateOf(false) }
-
-    var username by remember { mutableStateOf("") }
-    var password by remember { mutableStateOf("") }
-    var group by remember { mutableStateOf("") }
-    val mutableRole = remember { mutableStateOf(UserRole.STUDENT) }
-
-    var visible by mutableVisible
-
-    Text(
-        text = stringResource(R.string.register_title),
-        modifier = Modifier.padding(10.dp),
-        style = MaterialTheme.typography.displaySmall,
-        fontWeight = FontWeight.ExtraBold
-    )
-
-    Spacer(modifier = Modifier.size(10.dp))
-
-    val mutableUsernameError = remember { mutableStateOf(false) }
-    var usernameError by mutableUsernameError
-
-    var passwordError by remember { mutableStateOf(false) }
-
-    val mutableGroupError = remember { mutableStateOf(false) }
-    var groupError by mutableGroupError
-
-    OutlinedTextField(
-        value = username,
-        singleLine = true,
-        onValueChange = {
-            username = it
-            usernameError = false
-        },
-        label = { Text(stringResource(R.string.username)) },
-        isError = usernameError
-    )
-
-    OutlinedTextField(
-        value = password,
-        singleLine = true,
-        visualTransformation = PasswordVisualTransformation(),
-        onValueChange = {
-            passwordError = false
-            password = it
-        },
-        label = { Text(stringResource(R.string.password)) },
-        isError = passwordError
-    )
-
-    OutlinedTextField(
-        value = group,
-        singleLine = true,
-        onValueChange = {
-            groupError = false
-            group = it
-        },
-        label = { Text(stringResource(R.string.group)) },
-        isError = groupError
-    )
-
-    RoleSelector(mutableRole)
-
-    TextButton(onClick = { visible = false }) {
-        Text(text = stringResource(R.string.already_registered))
-    }
-
-    Button(
-        enabled = !mutableIsLoading.value,
-        onClick = {
-            if (username.length < 4) usernameError = true
-            if (password.isEmpty()) passwordError = true
-            if (group.isEmpty()) groupError = true
-
-            if (usernameError || passwordError || groupError) return@Button
-
-            tryRegister(
-                username,
-                password,
-                group,
-                mutableRole.value,
-                mutableUsernameError,
-                mutableGroupError,
-                mutableIsLoading,
-                context,
-                snackbarHostState,
-                scope,
-                navController
-            )
-
-            focusManager.clearFocus()
-        }
-    ) {
-        Text(
-            text = stringResource(R.string.register),
-            style = MaterialTheme.typography.bodyLarge
-        )
-    }
-}
 
 @Preview(showBackground = true)
 @Composable
 fun AuthForm(
-    mutableIsLogin: MutableState<Boolean> = mutableStateOf(true),
+    appNavController: NavHostController = rememberNavController(),
-    navController: NavHostController = rememberNavController(),
+    onPendingSnackbar: (String) -> Unit = {},
-    scope: CoroutineScope = rememberCoroutineScope(),
-    snackbarHostState: SnackbarHostState = remember { SnackbarHostState() },
 ) {
-    var isLogin by mutableIsLogin
+    val navController = rememberNavController()
 
-    val mutableVisible = remember { mutableStateOf(true) }
+    val modifier = Modifier.fillMaxSize()
-    var visible by mutableVisible
 
-    val animatedAlpha by animateFloatAsState(
+    NavHost(
-        targetValue = if (visible) 1.0f else 0f, label = "alpha"
+        modifier = Modifier.fillMaxSize(),
+        navController = navController,
+        startDestination = "sign-in",
+        enterTransition = {
+            slideIn(
+                animationSpec = tween(
+                    400,
+                    delayMillis = 250,
+                    easing = LinearOutSlowInEasing
+                )
+            ) { fullSize -> IntOffset(0, fullSize.height / 16) } + fadeIn(
+                animationSpec = tween(
+                    400,
+                    delayMillis = 250,
+                    easing = LinearOutSlowInEasing
                 )
-
-    Column(
-        modifier = Modifier
-            .padding(10.dp)
-            .graphicsLayer {
-                alpha = animatedAlpha
-                if (alpha == 0F) {
-                    if (!visible) isLogin = isLogin.not()
-                    visible = true
-                }
-            },
-        horizontalAlignment = Alignment.CenterHorizontally,
-    ) {
-        if (isLogin)
-            LoginForm(mutableVisible, navController, scope, snackbarHostState)
-        else
-            RegisterForm(mutableVisible, navController, scope, snackbarHostState)
-    }
-}
-
-@OptIn(ExperimentalMaterial3Api::class)
-@Preview(showBackground = true)
-@Composable
-fun RoleSelector(mutableRole: MutableState<UserRole> = mutableStateOf(UserRole.STUDENT)) {
-    var expanded by remember { mutableStateOf(false) }
-
-    var role by mutableRole
-
-    Box(
-        modifier = Modifier.wrapContentSize()
-    ) {
-        ExposedDropdownMenuBox(
-            expanded = expanded,
-            onExpandedChange = { expanded = !expanded }
-        ) {
-            TextField(
-                label = { Text(stringResource(R.string.role)) },
-                modifier = Modifier.menuAnchor(MenuAnchorType.PrimaryEditable),
-                value = stringResource(role.stringId),
-                leadingIcon = {
-                    Icon(
-                        imageVector = role.icon,
-                        contentDescription = "role icon"
             )
         },
-                onValueChange = {},
+        exitTransition = {
-                readOnly = true,
+            fadeOut(
-                trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) }
+                animationSpec = tween(
+                    250,
+                    easing = FastOutSlowInEasing
                 )
+            )
+        },
+    ) {
+        composable("sign-in") {
+            Row(
+                modifier,
+                horizontalArrangement = Arrangement.Center,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Card(border = BorderStroke(Dp.Hairline, MaterialTheme.colorScheme.inverseSurface)) {
+                    LoginForm(appNavController, navController, onPendingSnackbar)
+                }
+            }
+        }
+        composable("sign-up") {
+            Row(
+                modifier,
+                horizontalArrangement = Arrangement.Center,
+                verticalAlignment = Alignment.CenterVertically
+            ) {
+                Card(border = BorderStroke(Dp.Hairline, MaterialTheme.colorScheme.inverseSurface)) {
+                    RegisterForm(appNavController, navController, onPendingSnackbar)
+                }
+            }
+        }
+    }
 
-            ExposedDropdownMenu(
-                expanded = expanded,
-                onDismissRequest = { expanded = false }) {
-                AcceptableUserRoles.forEach {
-                    DropdownMenuItem(
-                        text = { Text(stringResource(it.stringId)) },
-                        onClick = {
-                            role = it
-                            expanded = false
-                        }
-                    )
-                }
-            }
-        }
-    }
 }
 
-fun tryLogin(
-    // data
-    username: String,
-    password: String,
-
-    // errors
-    mutableUsernameError: MutableState<Boolean>,
-    mutablePasswordError: MutableState<Boolean>,
-
-    // additional
-    mutableIsLoading: MutableState<Boolean>,
-    context: Context,
-    snackbarHostState: SnackbarHostState,
-    scope: CoroutineScope,
-    navController: NavHostController
-) {
-    var isLoading by mutableIsLoading
-
-    isLoading = true
-
-    AuthLogin(AuthLogin.RequestDto(username, password), context, {
-        runBlocking {
-            context.settingsDataStore.updateData { currentSettings ->
-                currentSettings
-                    .toBuilder()
-                    .setUserId(it.id)
-                    .setAccessToken(it.accessToken)
-                    .build()
-            }
-        }
-
-        ProfileMe(context, {
-            scope.launch { snackbarHostState.showSnackbar("Cool!") }
-
-            runBlocking {
-                context.settingsDataStore.updateData { currentSettings ->
-                    currentSettings
-                        .toBuilder()
-                        .setGroup(it.group)
-                        .build()
-                }
-            }
-
-            navController.navigate("main")
-        }, null).send()
-    }, {
-        isLoading = false
-
-        if (it is TimeoutError) {
-            scope.launch { snackbarHostState.showSnackbar("Request timed out!") }
-        }
-
-        if (it is ClientError && it.networkResponse.statusCode == 400) scope.launch {
-            snackbarHostState.showSnackbar("Request schema not identical!")
-        }
-
-        if (it is AuthFailureError) scope.launch {
-            mutableUsernameError.value = true
-            mutablePasswordError.value = true
-            snackbarHostState.showSnackbar("Invalid credentials!")
-        }
-
-
-        it.printStackTrace()
-    }).send()
-}
-
-fun tryRegister(
-    // data
-    username: String,
-    password: String,
-    group: String,
-    role: UserRole,
-
-    // errors
-    mutableUsernameError: MutableState<Boolean>,
-    mutableGroupError: MutableState<Boolean>,
-
-    // additional
-    mutableIsLoading: MutableState<Boolean>,
-    context: Context,
-    snackbarHostState: SnackbarHostState,
-    scope: CoroutineScope,
-    navController: NavHostController
-) {
-    var isLoading by mutableIsLoading
-
-    isLoading = true
-
-    AuthRegister(
-        AuthRegister.RequestDto(
-            username,
-            password,
-            group,
-            role
-        ), context, {
-            scope.launch { snackbarHostState.showSnackbar("Cool!") }
-
-            runBlocking {
-                context.settingsDataStore.updateData { currentSettings ->
-                    currentSettings.toBuilder().setUserId(it.id)
-                        .setAccessToken(it.accessToken).build()
-                }
-            }
-
-            runBlocking {
-                context.settingsDataStore.updateData { currentSettings ->
-                    currentSettings
-                        .toBuilder()
-                        .setGroup(group)
-                        .build()
-                }
-            }
-
-            navController.navigate("main")
-        }, {
-            isLoading = false
-
-            if (it is TimeoutError) {
-                scope.launch { snackbarHostState.showSnackbar("Request timed out!") }
-            }
-
-            if (it is ClientError) scope.launch {
-                val statusCode = it.networkResponse.statusCode
-
-                when (statusCode) {
-                    400 -> snackbarHostState.showSnackbar("Request schema not identical!")
-                    409 -> {
-                        mutableUsernameError.value = true
-                        snackbarHostState.showSnackbar("User already exists!")
-                    }
-
-                    404 -> {
-                        mutableGroupError.value = true
-                        snackbarHostState.showSnackbar("Group doesn't exists!")
-                    }
-                }
-            }
-
-            if (it is AuthFailureError) scope.launch {
-                snackbarHostState.showSnackbar(
-                    "Invalid credentials!"
-                )
-            }
-
-
-            it.printStackTrace()
-        }).send()
-}
 
 @Preview(showBackground = true)
 @Composable
-fun AuthScreen(navController: NavHostController = rememberNavController()) {
+fun AuthScreen(appNavController: NavHostController = rememberNavController()) {
     val context = LocalContext.current
 
     LaunchedEffect(Unit) {
@@ -506,14 +115,20 @@ fun AuthScreen(navController: NavHostController = rememberNavController()) {
             context.settingsDataStore.data.map { settings -> settings.accessToken }.first()
         }
 
-        if (accessToken.isNotEmpty()) navController.navigate("main")
+        if (accessToken.isNotEmpty()) {
+            appNavController.navigate("main") {
+                popUpTo("auth") { inclusive = true }
+            }
+        }
     }
-
-    val mutableIsLogin = remember { mutableStateOf(true) }
 
     val snackbarHostState = remember { SnackbarHostState() }
     val scope = rememberCoroutineScope()
 
+    val onPendingSnackbar: (String) -> Unit = {
+        scope.launch { snackbarHostState.showSnackbar(it, duration = SnackbarDuration.Long) }
+    }
+
     Scaffold(snackbarHost = { SnackbarHost(snackbarHostState) },
         modifier = Modifier.fillMaxSize(),
         contentWindowInsets = WindowInsets(0.dp, 0.dp, 0.dp, 0.dp),
@@ -525,14 +140,10 @@ fun AuthScreen(navController: NavHostController = rememberNavController()) {
                 horizontalArrangement = Arrangement.SpaceAround,
                 verticalAlignment = Alignment.CenterVertically
             ) {
-                Card {
                 AuthForm(
-                        mutableIsLogin,
+                    appNavController,
-                        navController,
+                    onPendingSnackbar
-                        scope,
-                        snackbarHostState
                 )
             }
-            }
         })
 }

app/src/main/java/ru/n08i40k/polytechnic/next/ui/auth/SignInForm.kt

@@ -0,0 +1,143 @@
+package ru.n08i40k.polytechnic.next.ui.auth
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavHostController
+import androidx.navigation.compose.rememberNavController
+import ru.n08i40k.polytechnic.next.R
+
+
+@Preview(showBackground = true)
+@Composable
+internal fun LoginForm(
+    appNavController: NavHostController = rememberNavController(),
+    navController: NavHostController = rememberNavController(),
+    onPendingSnackbar: (String) -> Unit = {}
+) {
+    val context = LocalContext.current
+    val focusManager = LocalFocusManager.current
+
+    var loading by remember { mutableStateOf(false) }
+
+    var username by remember { mutableStateOf("") }
+    var password by remember { mutableStateOf("") }
+
+    var usernameError by remember { mutableStateOf(false) }
+    var passwordError by remember { mutableStateOf(false) }
+
+    val onClick = fun() {
+        focusManager.clearFocus()
+
+        if (username.length < 4) usernameError = true
+        if (password.isEmpty()) passwordError = true
+
+        if (usernameError || passwordError) return
+
+        loading = true
+
+        trySignIn(
+            context,
+            username,
+            password,
+            {
+                loading = false
+
+                val stringRes = when (it) {
+                    SignInError.INVALID_CREDENTIALS -> {
+                        usernameError = true
+                        passwordError = true
+
+                        R.string.invalid_credentials
+                    }
+
+                    SignInError.TIMED_OUT -> R.string.timed_out
+                    SignInError.NO_CONNECTION -> R.string.no_connection
+                    SignInError.APPLICATION_TOO_OLD -> R.string.app_too_old
+                    SignInError.UNKNOWN -> R.string.unknown_error
+                }
+
+                onPendingSnackbar(context.getString(stringRes))
+            },
+            {
+                loading = false
+
+                appNavController.navigate("main") {
+                    popUpTo("auth") { inclusive = true }
+                }
+            }
+        )
+    }
+
+    Column(
+        modifier = Modifier.padding(20.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+    ) {
+
+        Text(
+            text = stringResource(R.string.sign_in_title),
+            modifier = Modifier.padding(10.dp),
+            style = MaterialTheme.typography.displaySmall,
+            fontWeight = FontWeight.ExtraBold
+        )
+
+        Spacer(modifier = Modifier.size(10.dp))
+
+        OutlinedTextField(
+            value = username,
+            singleLine = true,
+            onValueChange = {
+                username = it
+                usernameError = false
+            },
+            label = { Text(stringResource(R.string.username)) },
+            isError = usernameError
+        )
+
+        OutlinedTextField(
+            value = password,
+            singleLine = true,
+            visualTransformation = PasswordVisualTransformation(),
+            onValueChange = {
+                passwordError = false
+                password = it
+            },
+            label = { Text(stringResource(R.string.password)) },
+            isError = passwordError
+        )
+
+        TextButton(onClick = { navController.navigate("sign-up") }) {
+            Text(text = stringResource(R.string.not_registered))
+        }
+
+        Button(
+            enabled = !loading && !(usernameError || passwordError),
+            onClick = onClick
+        ) {
+            Text(
+                text = stringResource(R.string.proceed),
+                style = MaterialTheme.typography.bodyLarge
+            )
+        }
+    }
+}

app/src/main/java/ru/n08i40k/polytechnic/next/ui/auth/SignUpForm.kt

@@ -0,0 +1,166 @@
+package ru.n08i40k.polytechnic.next.ui.auth
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalFocusManager
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavHostController
+import androidx.navigation.compose.rememberNavController
+import ru.n08i40k.polytechnic.next.R
+import ru.n08i40k.polytechnic.next.model.UserRole
+import ru.n08i40k.polytechnic.next.ui.widgets.GroupSelector
+import ru.n08i40k.polytechnic.next.ui.widgets.RoleSelector
+
+
+@Preview(showBackground = true)
+@Composable
+internal fun RegisterForm(
+    appNavController: NavHostController = rememberNavController(),
+    navController: NavHostController = rememberNavController(),
+    onPendingSnackbar: (String) -> Unit = {}
+) {
+    val context = LocalContext.current
+    val focusManager = LocalFocusManager.current
+
+    var loading by remember { mutableStateOf(false) }
+
+    var username by remember { mutableStateOf("") }
+    var password by remember { mutableStateOf("") }
+    var group by remember { mutableStateOf<String?>(null) }
+    var role by remember { mutableStateOf(UserRole.STUDENT) }
+
+    var usernameError by remember { mutableStateOf(false) }
+    var passwordError by remember { mutableStateOf(false) }
+    var groupError by remember { mutableStateOf(false) }
+
+    val onClick = fun() {
+        focusManager.clearFocus()
+
+        if (username.length < 4) usernameError = true
+        if (password.isEmpty()) passwordError = true
+
+        if (usernameError || passwordError || groupError) return
+
+        loading = true
+
+        trySignUp(
+            context,
+            username,
+            password,
+            group!!,
+            role,
+            {
+                loading = false
+
+                val stringRes = when (it) {
+                    SignUpError.UNKNOWN -> R.string.unknown_error
+                    SignUpError.ALREADY_EXISTS -> R.string.already_exists
+                    SignUpError.APPLICATION_TOO_OLD -> R.string.app_too_old
+                    SignUpError.TIMED_OUT -> R.string.timed_out
+                    SignUpError.NO_CONNECTION -> R.string.no_connection
+                    SignUpError.GROUP_DOES_NOT_EXISTS -> R.string.group_does_not_exists
+                }
+
+                onPendingSnackbar(context.getString(stringRes))
+            },
+            {
+                loading = false
+
+                appNavController.navigate("main") {
+                    popUpTo("auth") { inclusive = true }
+                }
+            }
+        )
+    }
+
+    Column(
+        modifier = Modifier.padding(20.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+    ) {
+        Text(
+            text = stringResource(R.string.sign_up_title),
+            modifier = Modifier.padding(10.dp),
+            style = MaterialTheme.typography.displaySmall,
+            fontWeight = FontWeight.ExtraBold
+        )
+
+        Spacer(modifier = Modifier.size(10.dp))
+
+        OutlinedTextField(
+            value = username,
+            singleLine = true,
+            onValueChange = {
+                username = it
+                usernameError = false
+            },
+            label = { Text(stringResource(R.string.username)) },
+            isError = usernameError,
+            readOnly = loading
+        )
+
+        OutlinedTextField(
+            value = password,
+            singleLine = true,
+            visualTransformation = PasswordVisualTransformation(),
+            onValueChange = {
+                passwordError = false
+                password = it
+            },
+            label = { Text(stringResource(R.string.password)) },
+            isError = passwordError,
+            readOnly = loading
+        )
+
+        Spacer(modifier = Modifier.size(10.dp))
+
+        GroupSelector(
+            value = group,
+            isError = groupError,
+            readOnly = loading
+        ) {
+            groupError = false
+            group = it
+        }
+
+        Spacer(modifier = Modifier.size(10.dp))
+
+        RoleSelector(
+            value = role,
+            isError = false,
+            readOnly = loading
+        ) { role = it }
+
+        TextButton(onClick = { navController.navigate("sign-in") }) {
+            Text(text = stringResource(R.string.already_registered))
+        }
+
+        Button(
+            enabled = !loading && group != null && !(usernameError || passwordError || groupError),
+            onClick = onClick
+        ) {
+            Text(
+                text = stringResource(R.string.proceed),
+                style = MaterialTheme.typography.bodyLarge
+            )
+        }
+    }
+}

app/src/main/java/ru/n08i40k/polytechnic/next/ui/auth/TrySignIn.kt

@@ -0,0 +1,68 @@
+package ru.n08i40k.polytechnic.next.ui.auth
+
+import android.content.Context
+import com.android.volley.AuthFailureError
+import com.android.volley.ClientError
+import com.android.volley.NoConnectionError
+import com.android.volley.TimeoutError
+import com.google.firebase.logger.Logger
+import kotlinx.coroutines.runBlocking
+import ru.n08i40k.polytechnic.next.network.request.auth.AuthSignIn
+import ru.n08i40k.polytechnic.next.network.unwrapException
+import ru.n08i40k.polytechnic.next.settings.settingsDataStore
+import java.util.concurrent.TimeoutException
+
+internal enum class SignInError {
+    INVALID_CREDENTIALS,
+    TIMED_OUT,
+    NO_CONNECTION,
+    APPLICATION_TOO_OLD,
+    UNKNOWN
+}
+
+internal fun trySignIn(
+    context: Context,
+
+    username: String,
+    password: String,
+
+    onError: (SignInError) -> Unit,
+    onSuccess: () -> Unit,
+) {
+    AuthSignIn(AuthSignIn.RequestDto(username, password), context, {
+        runBlocking {
+            context.settingsDataStore.updateData { currentSettings ->
+                currentSettings
+                    .toBuilder()
+                    .setUserId(it.id)
+                    .setAccessToken(it.accessToken)
+                    .setGroup(it.group)
+                    .build()
+            }
+        }
+
+        onSuccess()
+    }, {
+        val error = when (val exception = unwrapException(it)) {
+            is TimeoutException -> SignInError.TIMED_OUT
+            is TimeoutError -> SignInError.TIMED_OUT
+            is NoConnectionError -> SignInError.NO_CONNECTION
+            is AuthFailureError -> SignInError.INVALID_CREDENTIALS
+            is ClientError -> {
+                if (exception.networkResponse.statusCode == 400)
+                    SignInError.APPLICATION_TOO_OLD
+                else
+                    SignInError.UNKNOWN
+            }
+
+            else -> SignInError.UNKNOWN
+        }
+
+        if (error == SignInError.UNKNOWN) {
+            Logger.getLogger("tryLogin")
+                .error("Unknown exception while trying to login!", it)
+        }
+
+        onError(error)
+    }).send()
+}

app/src/main/java/ru/n08i40k/polytechnic/next/ui/auth/TrySignUp.kt

@@ -0,0 +1,78 @@
+package ru.n08i40k.polytechnic.next.ui.auth
+
+import android.content.Context
+import com.android.volley.ClientError
+import com.android.volley.NoConnectionError
+import com.android.volley.TimeoutError
+import com.google.firebase.logger.Logger
+import kotlinx.coroutines.runBlocking
+import ru.n08i40k.polytechnic.next.model.UserRole
+import ru.n08i40k.polytechnic.next.network.request.auth.AuthSignUp
+import ru.n08i40k.polytechnic.next.network.unwrapException
+import ru.n08i40k.polytechnic.next.settings.settingsDataStore
+import java.util.concurrent.TimeoutException
+
+internal enum class SignUpError {
+    ALREADY_EXISTS,
+    GROUP_DOES_NOT_EXISTS,
+    TIMED_OUT,
+    NO_CONNECTION,
+    APPLICATION_TOO_OLD,
+    UNKNOWN
+}
+
+internal fun trySignUp(
+    context: Context,
+
+    username: String,
+    password: String,
+    group: String,
+    role: UserRole,
+
+    onError: (SignUpError) -> Unit,
+    onSuccess: () -> Unit,
+) {
+    AuthSignUp(
+        AuthSignUp.RequestDto(
+            username,
+            password,
+            group,
+            role
+        ), context, {
+            runBlocking {
+                context.settingsDataStore.updateData { currentSettings ->
+                    currentSettings
+                        .toBuilder()
+                        .setUserId(it.id)
+                        .setAccessToken(it.accessToken)
+                        .setGroup(group)
+                        .build()
+                }
+            }
+
+            onSuccess()
+        }, {
+            val error = when (val exception = unwrapException(it)) {
+                is TimeoutException -> SignUpError.TIMED_OUT
+                is NoConnectionError -> SignUpError.NO_CONNECTION
+                is TimeoutError -> SignUpError.UNKNOWN
+                is ClientError -> {
+                    when (exception.networkResponse.statusCode) {
+                        400 -> SignUpError.APPLICATION_TOO_OLD
+                        404 -> SignUpError.GROUP_DOES_NOT_EXISTS
+                        409 -> SignUpError.ALREADY_EXISTS
+                        else -> SignUpError.UNKNOWN
+                    }
+                }
+
+                else -> SignUpError.UNKNOWN
+            }
+
+            if (error == SignUpError.UNKNOWN) {
+                Logger.getLogger("tryRegister")
+                    .error("Unknown exception while trying to register!", it)
+            }
+
+            onError(error)
+        }).send()
+}

app/src/main/java/ru/n08i40k/polytechnic/next/ui/icons/appicons/filled/Download.kt

@@ -1,3 +1,5 @@
+@file:Suppress("ObjectPropertyName", "UnusedReceiverParameter")
+
 package ru.n08i40k.polytechnic.next.ui.icons.appicons.filled
 
 import androidx.compose.ui.graphics.Color
@@ -11,14 +13,13 @@ import androidx.compose.ui.graphics.vector.path
 import androidx.compose.ui.unit.dp
 import ru.n08i40k.polytechnic.next.ui.icons.appicons.FilledGroup
 
-@Suppress("UnusedReceiverParameter")
 val FilledGroup.Download: ImageVector
     get() {
         if (_download != null) {
             return _download!!
         }
         _download = Builder(
-            name = "Download", defaultWidth = 24.0.dp, defaultHeight = 24.0.dp,
+            name = "Download", defaultWidth = 24.dp, defaultHeight = 24.dp,
             viewportWidth = 24.0f, viewportHeight = 24.0f
         ).apply {
             path(
@@ -55,5 +56,4 @@ val FilledGroup.Download: ImageVector
         return _download!!
     }
 
-@Suppress("ObjectPropertyName")
 private var _download: ImageVector? = null

app/src/main/java/ru/n08i40k/polytechnic/next/ui/icons/appicons/filled/Error.kt

@@ -0,0 +1,64 @@
+@file:Suppress("ObjectPropertyName", "UnusedReceiverParameter")
+
+package ru.n08i40k.polytechnic.next.ui.icons.appicons.filled
+
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.PathFillType.Companion.EvenOdd
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.graphics.StrokeCap.Companion.Butt
+import androidx.compose.ui.graphics.StrokeJoin.Companion.Miter
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.graphics.vector.ImageVector.Builder
+import androidx.compose.ui.graphics.vector.path
+import androidx.compose.ui.unit.dp
+import ru.n08i40k.polytechnic.next.ui.icons.appicons.FilledGroup
+
+val FilledGroup.Error: ImageVector
+    get() {
+        if (_error != null) {
+            return _error!!
+        }
+        _error = Builder(
+            name = "Error", defaultWidth = 24.dp, defaultHeight = 24.dp,
+            viewportWidth = 24.0f, viewportHeight = 24.0f
+        ).apply {
+            path(
+                fill = SolidColor(Color(0xFF000000)), stroke = null, strokeLineWidth = 0.0f,
+                strokeLineCap = Butt, strokeLineJoin = Miter, strokeLineMiter = 4.0f,
+                pathFillType = EvenOdd
+            ) {
+                moveTo(1.25f, 8.0f)
+                curveTo(1.25f, 4.2721f, 4.2721f, 1.25f, 8.0f, 1.25f)
+                lineTo(16.0f, 1.25f)
+                curveTo(19.7279f, 1.25f, 22.75f, 4.2721f, 22.75f, 8.0f)
+                lineTo(22.75f, 16.0f)
+                curveTo(22.75f, 19.7279f, 19.7279f, 22.75f, 16.0f, 22.75f)
+                lineTo(8.0f, 22.75f)
+                curveTo(4.2721f, 22.75f, 1.25f, 19.7279f, 1.25f, 16.0f)
+                lineTo(1.25f, 8.0f)
+                close()
+                moveTo(8.4697f, 8.4697f)
+                curveTo(8.7626f, 8.1768f, 9.2374f, 8.1768f, 9.5303f, 8.4697f)
+                lineTo(12.0f, 10.9393f)
+                lineTo(14.4697f, 8.4697f)
+                curveTo(14.7626f, 8.1768f, 15.2374f, 8.1768f, 15.5303f, 8.4697f)
+                curveTo(15.8232f, 8.7626f, 15.8232f, 9.2374f, 15.5303f, 9.5303f)
+                lineTo(13.0606f, 12.0f)
+                lineTo(15.5303f, 14.4697f)
+                curveTo(15.8232f, 14.7626f, 15.8232f, 15.2374f, 15.5303f, 15.5303f)
+                curveTo(15.2374f, 15.8232f, 14.7625f, 15.8232f, 14.4696f, 15.5303f)
+                lineTo(12.0f, 13.0606f)
+                lineTo(9.5303f, 15.5303f)
+                curveTo(9.2374f, 15.8232f, 8.7626f, 15.8232f, 8.4697f, 15.5303f)
+                curveTo(8.1768f, 15.2374f, 8.1768f, 14.7625f, 8.4697f, 14.4696f)
+                lineTo(10.9393f, 12.0f)
+                lineTo(8.4697f, 9.5303f)
+                curveTo(8.1768f, 9.2374f, 8.1768f, 8.7626f, 8.4697f, 8.4697f)
+                close()
+            }
+        }
+            .build()
+        return _error!!
+    }
+
+private var _error: ImageVector? = null

app/src/main/java/ru/n08i40k/polytechnic/next/ui/icons/appicons/filled/Info.kt

@@ -0,0 +1,49 @@
+@file:Suppress("ObjectPropertyName", "UnusedReceiverParameter")
+
+package ru.n08i40k.polytechnic.next.ui.icons.appicons.filled
+
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.PathFillType.Companion.NonZero
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.graphics.StrokeCap.Companion.Butt
+import androidx.compose.ui.graphics.StrokeJoin.Companion.Miter
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.graphics.vector.ImageVector.Builder
+import androidx.compose.ui.graphics.vector.path
+import androidx.compose.ui.unit.dp
+import ru.n08i40k.polytechnic.next.ui.icons.appicons.FilledGroup
+
+val FilledGroup.Info: ImageVector
+    get() {
+        if (_info != null) {
+            return _info!!
+        }
+        _info = Builder(
+            name = "Info", defaultWidth = 24.dp, defaultHeight = 24.dp,
+            viewportWidth = 24.0f, viewportHeight = 24.0f
+        ).apply {
+            path(
+                fill = SolidColor(Color(0xFF000000)), stroke = null, strokeLineWidth = 0.0f,
+                strokeLineCap = Butt, strokeLineJoin = Miter, strokeLineMiter = 4.0f,
+                pathFillType = NonZero
+            ) {
+                moveTo(12.0f, 2.0f)
+                arcTo(10.0f, 10.0f, 0.0f, true, false, 22.0f, 12.0f)
+                arcTo(10.0f, 10.0f, 0.0f, false, false, 12.0f, 2.0f)
+                close()
+                moveTo(13.0f, 17.0f)
+                arcToRelative(1.0f, 1.0f, 0.0f, false, true, -2.0f, 0.0f)
+                lineTo(11.0f, 11.0f)
+                arcToRelative(1.0f, 1.0f, 0.0f, false, true, 2.0f, 0.0f)
+                close()
+                moveTo(12.0f, 8.0f)
+                arcToRelative(1.5f, 1.5f, 0.0f, true, true, 1.5f, -1.5f)
+                arcTo(1.5f, 1.5f, 0.0f, false, true, 12.0f, 8.0f)
+                close()
+            }
+        }
+            .build()
+        return _info!!
+    }
+
+private var _info: ImageVector? = null

app/src/main/java/ru/n08i40k/polytechnic/next/ui/icons/appicons/filled/Telegram.kt

@@ -1,3 +1,5 @@
+@file:Suppress("ObjectPropertyName", "UnusedReceiverParameter")
+
 package ru.n08i40k.polytechnic.next.ui.icons.appicons.filled
 
 import androidx.compose.ui.graphics.Color
@@ -11,14 +13,13 @@ import androidx.compose.ui.graphics.vector.path
 import androidx.compose.ui.unit.dp
 import ru.n08i40k.polytechnic.next.ui.icons.appicons.FilledGroup
 
-@Suppress("UnusedReceiverParameter")
 val FilledGroup.Telegram: ImageVector
     get() {
         if (_telegram != null) {
             return _telegram!!
         }
         _telegram = Builder(
-            name = "Telegram", defaultWidth = 24.0.dp, defaultHeight = 24.0.dp,
+            name = "Telegram", defaultWidth = 24.dp, defaultHeight = 24.dp,
             viewportWidth = 24.0f, viewportHeight = 24.0f
         ).apply {
             path(
@@ -49,5 +50,4 @@ val FilledGroup.Telegram: ImageVector
         return _telegram!!
     }
 
-@Suppress("ObjectPropertyName")
 private var _telegram: ImageVector? = null

app/src/main/java/ru/n08i40k/polytechnic/next/ui/icons/appicons/filled/Warning.kt

@@ -0,0 +1,59 @@
+@file:Suppress("ObjectPropertyName", "UnusedReceiverParameter")
+
+package ru.n08i40k.polytechnic.next.ui.icons.appicons.filled
+
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.PathFillType.Companion.EvenOdd
+import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.graphics.StrokeCap.Companion.Butt
+import androidx.compose.ui.graphics.StrokeJoin.Companion.Miter
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.graphics.vector.ImageVector.Builder
+import androidx.compose.ui.graphics.vector.path
+import androidx.compose.ui.unit.dp
+import ru.n08i40k.polytechnic.next.ui.icons.appicons.FilledGroup
+
+val FilledGroup.Warning: ImageVector
+    get() {
+        if (_warning != null) {
+            return _warning!!
+        }
+        _warning = Builder(
+            name = "Warning", defaultWidth = 24.dp, defaultHeight = 24.dp,
+            viewportWidth = 512.0f, viewportHeight = 512.0f
+        ).apply {
+            path(
+                fill = SolidColor(Color(0xFF000000)), stroke = SolidColor(Color(0x00000000)),
+                strokeLineWidth = 1.0f, strokeLineCap = Butt, strokeLineJoin = Miter,
+                strokeLineMiter = 4.0f, pathFillType = EvenOdd
+            ) {
+                moveTo(278.313f, 48.296f)
+                curveTo(284.928f, 52.075f, 290.41f, 57.557f, 294.189f, 64.172f)
+                lineTo(476.667f, 383.508f)
+                curveTo(488.358f, 403.967f, 481.25f, 430.03f, 460.791f, 441.722f)
+                curveTo(454.344f, 445.405f, 447.047f, 447.343f, 439.622f, 447.343f)
+                lineTo(74.667f, 447.343f)
+                curveTo(51.103f, 447.343f, 32.0f, 428.241f, 32.0f, 404.677f)
+                curveTo(32.0f, 397.251f, 33.938f, 389.955f, 37.622f, 383.508f)
+                lineTo(220.099f, 64.172f)
+                curveTo(231.79f, 43.713f, 257.854f, 36.605f, 278.313f, 48.296f)
+                close()
+                moveTo(256.0f, 314.667f)
+                curveTo(240.762f, 314.667f, 229.333f, 325.931f, 229.333f, 340.949f)
+                curveTo(229.333f, 356.651f, 240.416f, 367.915f, 256.0f, 367.915f)
+                curveTo(271.238f, 367.915f, 282.667f, 356.651f, 282.667f, 341.291f)
+                curveTo(282.667f, 325.931f, 271.238f, 314.667f, 256.0f, 314.667f)
+                close()
+                moveTo(277.333f, 149.333f)
+                lineTo(234.667f, 149.333f)
+                lineTo(234.667f, 277.333f)
+                lineTo(277.333f, 277.333f)
+                lineTo(277.333f, 149.333f)
+                close()
+            }
+        }
+            .build()
+        return _warning!!
+    }
+
+private var _warning: ImageVector? = null

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/MainScreen.kt

@@ -116,7 +116,7 @@ private fun NavHostContainer(
                 )
             )
         },
-        builder = {
+    ) {
         composable("profile") {
             ProfileScreen(LocalContext.current.profileViewModel!!) { context.profileViewModel!!.refreshProfile() }
         }
@@ -130,7 +130,7 @@ private fun NavHostContainer(
                 ReplacerScreen(scheduleReplacerViewModel) { scheduleReplacerViewModel.refresh() }
             }
         }
-        })
+    }
 }
 
 private fun openLink(context: Context, link: String) {
@@ -260,7 +260,11 @@ fun MainScreen(
         viewModel(
             factory = ProfileViewModel.provideFactory(
                 profileRepository = mainViewModel.appContainer.profileRepository,
-                onUnauthorized = { appNavController.navigate("auth") })
+                onUnauthorized = {
+                    appNavController.navigate("auth") {
+                        popUpTo("main") { inclusive = true }
+                    }
+                })
         )
     LocalContext.current.profileViewModel = profileViewModel
 

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/profile/ChangeGroupDialog.kt

@@ -1,26 +1,14 @@
 package ru.n08i40k.polytechnic.next.ui.main.profile
 
 import android.content.Context
-import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.IntrinsicSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.width
-import androidx.compose.foundation.layout.wrapContentSize
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Email
 import androidx.compose.material3.Button
 import androidx.compose.material3.Card
-import androidx.compose.material3.DropdownMenuItem
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.ExposedDropdownMenuBox
-import androidx.compose.material3.ExposedDropdownMenuDefaults
-import androidx.compose.material3.Icon
-import androidx.compose.material3.MenuAnchorType
 import androidx.compose.material3.Text
-import androidx.compose.material3.TextField
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -36,7 +24,7 @@ import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.data.users.impl.FakeProfileRepository
 import ru.n08i40k.polytechnic.next.model.Profile
 import ru.n08i40k.polytechnic.next.network.request.profile.ProfileChangeGroup
-import ru.n08i40k.polytechnic.next.network.request.schedule.ScheduleGetGroupNames
+import ru.n08i40k.polytechnic.next.ui.widgets.GroupSelector
 
 private enum class ChangeGroupError {
     NOT_EXISTS
@@ -57,80 +45,6 @@ private fun tryChangeGroup(
     }).send()
 }
 
-@Composable
-private fun getGroups(context: Context): ArrayList<String> {
-    val groupPlaceholder = stringResource(R.string.loading)
-
-    val groups = remember { arrayListOf(groupPlaceholder) }
-
-    LaunchedEffect(groups) {
-        ScheduleGetGroupNames(context, {
-            groups.clear()
-            groups.addAll(it.names)
-        }, {
-            throw it
-        }).send()
-    }
-
-    return groups
-}
-
-@OptIn(ExperimentalMaterial3Api::class)
-@Preview(showBackground = true)
-@Composable
-private fun GroupSelector(
-    value: String = "ИС-214/24",
-    onValueChange: (String) -> Unit = {},
-    isError: Boolean = false,
-    readOnly: Boolean = false,
-) {
-    var expanded by remember { mutableStateOf(false) }
-
-    Box(
-        modifier = Modifier.wrapContentSize()
-    ) {
-        ExposedDropdownMenuBox(
-            expanded = expanded,
-            onExpandedChange = {
-                expanded = !readOnly && !expanded
-            }
-        ) {
-            TextField(
-                label = { Text(stringResource(R.string.group)) },
-                modifier = Modifier.menuAnchor(MenuAnchorType.PrimaryEditable),
-                value = value,
-                leadingIcon = {
-                    Icon(
-                        imageVector = Icons.Filled.Email,
-                        contentDescription = "group"
-                    )
-                },
-                onValueChange = {},
-                isError = isError,
-                readOnly = true,
-                trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) }
-            )
-
-            val context = LocalContext.current
-            val groups = getGroups(context)
-
-            ExposedDropdownMenu(
-                expanded = expanded,
-                onDismissRequest = { expanded = false }) {
-                groups.forEach {
-                    DropdownMenuItem(
-                        text = { Text(it) },
-                        onClick = {
-                            onValueChange(it)
-                            expanded = false
-                        }
-                    )
-                }
-            }
-        }
-    }
-}
-
 @Preview(showBackground = true)
 @Composable
 internal fun ChangeGroupDialog(
@@ -141,7 +55,7 @@ internal fun ChangeGroupDialog(
 ) {
     Dialog(onDismissRequest = onDismiss) {
         Card {
-            var group by remember { mutableStateOf("ИС-214/23") }
+            var group by remember { mutableStateOf<String?>(profile.group) }
             var groupError by remember { mutableStateOf(false) }
 
             var processing by remember { mutableStateOf(false) }
@@ -165,7 +79,7 @@ internal fun ChangeGroupDialog(
 
                         tryChangeGroup(
                             context = context,
-                            group = group,
+                            group = group!!,
                             onError = {
                                 when (it) {
                                     ChangeGroupError.NOT_EXISTS -> {
@@ -178,7 +92,7 @@ internal fun ChangeGroupDialog(
                             onSuccess = onChange
                         )
                     },
-                    enabled = !(groupError || processing)
+                    enabled = !(groupError || processing) && group != null
                 ) {
                     Text(stringResource(R.string.change_group))
                 }

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/profile/ProfileCard.kt

@@ -33,6 +33,7 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import kotlinx.coroutines.runBlocking
+import ru.n08i40k.polytechnic.next.PolytechnicApplication
 import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.data.users.impl.FakeProfileRepository
 import ru.n08i40k.polytechnic.next.model.Profile
@@ -187,6 +188,10 @@ internal fun ProfileCard(profile: Profile = FakeProfileRepository.exampleProfile
                                     context.settingsDataStore.updateData {
                                         it.toBuilder().setGroup(group).build()
                                     }
+                                    (context.applicationContext as PolytechnicApplication)
+                                        .container
+                                        .networkCacheRepository
+                                        .clear()
                                 }
                                 context.profileViewModel!!.refreshProfile {
                                     scheduleViewModel.refreshGroup()

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/profile/ProfileScreen.kt

@@ -14,7 +14,7 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.data.MockAppContainer
-import ru.n08i40k.polytechnic.next.ui.LoadingContent
+import ru.n08i40k.polytechnic.next.ui.widgets.LoadingContent
 import ru.n08i40k.polytechnic.next.ui.model.ProfileUiState
 import ru.n08i40k.polytechnic.next.ui.model.ProfileViewModel
 

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/replacer/ReplacerScreen.kt

@@ -43,7 +43,7 @@ import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.data.MockAppContainer
 import ru.n08i40k.polytechnic.next.data.scheduleReplacer.impl.FakeScheduleReplacerRepository
 import ru.n08i40k.polytechnic.next.model.ScheduleReplacer
-import ru.n08i40k.polytechnic.next.ui.LoadingContent
+import ru.n08i40k.polytechnic.next.ui.widgets.LoadingContent
 import ru.n08i40k.polytechnic.next.ui.model.ScheduleReplacerUiState
 import ru.n08i40k.polytechnic.next.ui.model.ScheduleReplacerViewModel
 

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/DayCard.kt

@@ -33,23 +33,15 @@ import kotlinx.coroutines.flow.flow
 import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.data.schedule.impl.FakeScheduleRepository
 import ru.n08i40k.polytechnic.next.model.Day
-import ru.n08i40k.polytechnic.next.model.Lesson
 import ru.n08i40k.polytechnic.next.model.LessonType
-import java.util.Calendar
-
-private fun getCurrentMinutes(): Int {
-    return Calendar.getInstance()
-        .get(Calendar.HOUR_OF_DAY) * 60 + Calendar.getInstance()
-        .get(Calendar.MINUTE)
-}
 
 @Composable
-private fun getMinutes(): Flow<Int> {
+private fun getCurrentLessonIdx(day: Day?): Flow<Int> {
     val value by remember {
         derivedStateOf {
             flow {
                 while (true) {
-                    emit(getCurrentMinutes())
+                    emit(day?.currentIdx ?: -1)
                     delay(5_000)
                 }
             }
@@ -59,22 +51,6 @@ private fun getMinutes(): Flow<Int> {
     return value
 }
 
-@Composable
-fun calculateCurrentLessonIdx(lessons: ArrayList<Lesson?>): Int {
-    val currentMinutes by getMinutes().collectAsStateWithLifecycle(0)
-
-    val filteredLessons = lessons
-        .filterNotNull()
-        .filter {
-            it.time.start <= currentMinutes && it.time.end >= currentMinutes
-        }
-
-    if (filteredLessons.isEmpty())
-        return -1
-
-    return lessons.indexOf(filteredLessons[0])
-}
-
 @Preview(showBackground = true)
 @Composable
 fun DayCard(
@@ -99,8 +75,8 @@ fun DayCard(
         modifier = modifier,
         colors = CardDefaults.cardColors(
             containerColor =
-            if (current) MaterialTheme.colorScheme.inverseSurface
+            if (current) MaterialTheme.colorScheme.primaryContainer
-            else MaterialTheme.colorScheme.surface
+            else MaterialTheme.colorScheme.secondaryContainer
         ),
         border = BorderStroke(1.dp, MaterialTheme.colorScheme.inverseSurface)
     ) {
@@ -109,14 +85,10 @@ fun DayCard(
                 modifier = Modifier.fillMaxWidth(),
                 fontWeight = FontWeight.Bold,
                 textAlign = TextAlign.Center,
-                text = stringResource(R.string.day_null),
+                text = stringResource(R.string.day_null)
-                color =
-                if (current) MaterialTheme.colorScheme.inverseOnSurface
-                else MaterialTheme.colorScheme.onSurface
             )
             return@Card
         }
-
         Text(
             modifier = Modifier.fillMaxWidth(),
             fontWeight = FontWeight.Bold,
@@ -124,7 +96,8 @@ fun DayCard(
             text = day.name,
         )
 
-        val currentLessonIdx = calculateCurrentLessonIdx(day.lessons)
+        val currentLessonIdx by getCurrentLessonIdx(if (current) day else null)
+            .collectAsStateWithLifecycle(0)
 
         Column(
             modifier = Modifier.fillMaxWidth(),

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/DayPager.kt

@@ -1,21 +1,50 @@
 package ru.n08i40k.polytechnic.next.ui.main.schedule
 
+import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.pager.HorizontalPager
 import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.util.lerp
+import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.data.schedule.impl.FakeScheduleRepository
 import ru.n08i40k.polytechnic.next.model.Group
+import ru.n08i40k.polytechnic.next.ui.widgets.NotificationCard
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+import java.time.temporal.WeekFields
 import java.util.Calendar
+import java.util.Locale
+import java.util.logging.Level
 import kotlin.math.absoluteValue
 
+private fun isCurrentWeek(group: Group): Boolean {
+    if (group.days.size == 0 || group.days[0] == null)
+        return true
+
+    val dateString = group.days[0]!!.name
+
+    val formatter = DateTimeFormatter.ofPattern("dd.MM.yyyy", Locale("ru"))
+    val datePart = dateString.split(" ").getOrNull(1) ?: return true
+
+    val date = LocalDate.parse(datePart, formatter)
+    val currentDate = LocalDate.now()
+
+    val weekField = WeekFields.of(Locale.getDefault()).weekOfWeekBasedYear()
+    val currentWeek = currentDate.get(weekField)
+    val dateWeek = date.get(weekField)
+
+    return dateWeek >= currentWeek
+}
+
 @Preview
 @Composable
 fun DayPager(group: Group = FakeScheduleRepository.exampleGroup) {
@@ -23,14 +52,20 @@ fun DayPager(group: Group = FakeScheduleRepository.exampleGroup) {
     val calendarDay = currentDay
         .coerceAtLeast(0)
         .coerceAtMost(group.days.size - 1)
-
     val pagerState = rememberPagerState(initialPage = calendarDay, pageCount = { group.days.size })
 
+    Column {
+        if (!isCurrentWeek(group)) {
+            NotificationCard(
+                level = Level.WARNING,
+                title = stringResource(R.string.outdated_schedule)
+            )
+        }
         HorizontalPager(
             state = pagerState,
             contentPadding = PaddingValues(horizontal = 20.dp),
             verticalAlignment = Alignment.Top,
-        modifier = Modifier.height(600.dp)
+            modifier = Modifier.height(600.dp).padding(top = 5.dp)
         ) { page ->
             DayCard(
                 modifier = Modifier.graphicsLayer {
@@ -50,4 +85,5 @@ fun DayPager(group: Group = FakeScheduleRepository.exampleGroup) {
                 current = currentDay == page
             )
         }
+    }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/ScheduleScreen.kt

@@ -26,7 +26,7 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import kotlinx.coroutines.delay
 import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.data.MockAppContainer
-import ru.n08i40k.polytechnic.next.ui.LoadingContent
+import ru.n08i40k.polytechnic.next.ui.widgets.LoadingContent
 import ru.n08i40k.polytechnic.next.ui.model.ScheduleUiState
 import ru.n08i40k.polytechnic.next.ui.model.ScheduleViewModel
 

app/src/main/java/ru/n08i40k/polytechnic/next/ui/main/schedule/UpdateInfo.kt

@@ -19,7 +19,8 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
 import ru.n08i40k.polytechnic.next.R
 import ru.n08i40k.polytechnic.next.UpdateDates
-import ru.n08i40k.polytechnic.next.ui.ExpandableCard
+import ru.n08i40k.polytechnic.next.ui.widgets.ExpandableCard
+import ru.n08i40k.polytechnic.next.ui.widgets.ExpandableCardTitle
 import java.text.SimpleDateFormat
 import java.util.Date
 import java.util.Locale
@@ -49,7 +50,7 @@ fun UpdateInfo(
     ExpandableCard(
         expanded = expanded,
         onExpandedChange = { expanded = !expanded },
-        title = stringResource(R.string.update_info_header)
+        title = { ExpandableCardTitle(stringResource(R.string.update_info_header)) }
     ) {
         Column(
             modifier = Modifier

app/src/main/java/ru/n08i40k/polytechnic/next/ui/theme/Color.kt

@@ -1,5 +1,4 @@
 package ru.n08i40k.polytechnic.next.ui.theme
-
 import androidx.compose.ui.graphics.Color
 
 val primaryLight = Color(0xFF4C662B)
@@ -218,9 +217,33 @@ val surfaceContainerDarkHighContrast = Color(0xFF1E201A)
 val surfaceContainerHighDarkHighContrast = Color(0xFF282B24)
 val surfaceContainerHighestDarkHighContrast = Color(0xFF33362E)
 
+val warningLight = Color(0xFF7B580C)
+val onWarningLight = Color(0xFFFFFFFF)
+val warningContainerLight = Color(0xFFFFDEA8)
+val onWarningContainerLight = Color(0xFF271900)
 
+val warningLightMediumContrast = Color(0xFF593E00)
+val onWarningLightMediumContrast = Color(0xFFFFFFFF)
+val warningContainerLightMediumContrast = Color(0xFF946E24)
+val onWarningContainerLightMediumContrast = Color(0xFFFFFFFF)
 
+val warningLightHighContrast = Color(0xFF2F1F00)
+val onWarningLightHighContrast = Color(0xFFFFFFFF)
+val warningContainerLightHighContrast = Color(0xFF593E00)
+val onWarningContainerLightHighContrast = Color(0xFFFFFFFF)
 
+val warningDark = Color(0xFFEEBF6D)
+val onWarningDark = Color(0xFF422D00)
+val warningContainerDark = Color(0xFF5E4200)
+val onWarningContainerDark = Color(0xFFFFDEA8)
 
+val warningDarkMediumContrast = Color(0xFFF2C470)
+val onWarningDarkMediumContrast = Color(0xFF201400)
+val warningContainerDarkMediumContrast = Color(0xFFB38A3D)
+val onWarningContainerDarkMediumContrast = Color(0xFF000000)
 
+val warningDarkHighContrast = Color(0xFFFFFAF7)
+val onWarningDarkHighContrast = Color(0xFF000000)
+val warningContainerDarkHighContrast = Color(0xFFF2C470)
+val onWarningContainerDarkHighContrast = Color(0xFF000000)
 

app/src/main/java/ru/n08i40k/polytechnic/next/ui/theme/Theme.kt

@@ -14,6 +14,11 @@ import androidx.compose.runtime.Immutable
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 
+@Immutable
+data class ExtendedColorScheme(
+    val warning: ColorFamily,
+)
+
 private val lightScheme = lightColorScheme(
     primary = primaryLight,
     onPrimary = onPrimaryLight,
@@ -242,6 +247,60 @@ private val highContrastDarkColorScheme = darkColorScheme(
     surfaceContainerHighest = surfaceContainerHighestDarkHighContrast,
 )
 
+val extendedLight = ExtendedColorScheme(
+    warning = ColorFamily(
+        warningLight,
+        onWarningLight,
+        warningContainerLight,
+        onWarningContainerLight,
+    ),
+)
+
+val extendedDark = ExtendedColorScheme(
+    warning = ColorFamily(
+        warningDark,
+        onWarningDark,
+        warningContainerDark,
+        onWarningContainerDark,
+    ),
+)
+
+val extendedLightMediumContrast = ExtendedColorScheme(
+    warning = ColorFamily(
+        warningLightMediumContrast,
+        onWarningLightMediumContrast,
+        warningContainerLightMediumContrast,
+        onWarningContainerLightMediumContrast,
+    ),
+)
+
+val extendedLightHighContrast = ExtendedColorScheme(
+    warning = ColorFamily(
+        warningLightHighContrast,
+        onWarningLightHighContrast,
+        warningContainerLightHighContrast,
+        onWarningContainerLightHighContrast,
+    ),
+)
+
+val extendedDarkMediumContrast = ExtendedColorScheme(
+    warning = ColorFamily(
+        warningDarkMediumContrast,
+        onWarningDarkMediumContrast,
+        warningContainerDarkMediumContrast,
+        onWarningContainerDarkMediumContrast,
+    ),
+)
+
+val extendedDarkHighContrast = ExtendedColorScheme(
+    warning = ColorFamily(
+        warningDarkHighContrast,
+        onWarningDarkHighContrast,
+        warningContainerDarkHighContrast,
+        onWarningContainerDarkHighContrast,
+    ),
+)
+
 @Immutable
 data class ColorFamily(
     val color: Color,
@@ -254,12 +313,17 @@ val unspecified_scheme = ColorFamily(
     Color.Unspecified, Color.Unspecified, Color.Unspecified, Color.Unspecified
 )
 
+@Composable
+fun extendedColorScheme(): ExtendedColorScheme {
+    return if (isSystemInDarkTheme()) extendedDark else extendedLight
+}
+
 @Composable
 fun AppTheme(
     darkTheme: Boolean = isSystemInDarkTheme(),
     // Dynamic color is available on Android 12+
     dynamicColor: Boolean = true,
-    content: @Composable () -> Unit
+    content: @Composable() () -> Unit
 ) {
     val colorScheme = when {
         dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {

app/src/main/java/ru/n08i40k/polytechnic/next/ui/widgets/ExpandableCard.kt

@@ -1,4 +1,4 @@
-package ru.n08i40k.polytechnic.next.ui
+package ru.n08i40k.polytechnic.next.ui.widgets
 
 import androidx.compose.animation.AnimatedVisibility
 import androidx.compose.animation.core.MutableTransitionState
@@ -31,7 +31,6 @@ import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.rotate
-import androidx.compose.ui.graphics.RectangleShape
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
@@ -39,9 +38,14 @@ import androidx.compose.ui.unit.dp
 @Composable
 fun ExpandableCard(
     modifier: Modifier = Modifier,
-    expanded: Boolean,
+    colors: CardColors = CardDefaults.cardColors(),
+    border: BorderStroke = BorderStroke(
+        Dp.Hairline,
+        MaterialTheme.colorScheme.inverseSurface
+    ),
+    expanded: Boolean = false,
     onExpandedChange: () -> Unit,
-    title: String,
+    title: @Composable () -> Unit,
     content: @Composable () -> Unit
 ) {
     val transitionState = remember {
@@ -57,8 +61,8 @@ fun ExpandableCard(
             onExpandedChange()
             transitionState.targetState = expanded
         },
-        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surface),
+        colors = colors,
-        border = BorderStroke(Dp.Hairline, MaterialTheme.colorScheme.inverseSurface)
+        border = border
     ) {
         Column {
             ExpandableCardHeader(title, transition)
@@ -67,6 +71,25 @@ fun ExpandableCard(
     }
 }
 
+@Composable
+fun ExpandableCard(
+    modifier: Modifier = Modifier,
+    title: @Composable () -> Unit,
+    colors: CardColors = CardDefaults.cardColors(),
+    border: BorderStroke = BorderStroke(
+        Dp.Hairline,
+        MaterialTheme.colorScheme.inverseSurface
+    ),
+) {
+    Card(
+        modifier = modifier,
+        colors = colors,
+        border = border
+    ) {
+        ExpandableCardHeader(title, null)
+    }
+}
+
 @Composable
 private fun ExpandableCardContent(
     visible: Boolean = true,
@@ -99,7 +122,7 @@ private fun ExpandableCardContent(
 }
 
 @Composable
-private fun ExpandableCardTitle(text: String) {
+fun ExpandableCardTitle(text: String) {
     Text(
         text = text,
         modifier = Modifier
@@ -130,8 +153,8 @@ private fun ExpandableCardArrow(
 
 @Composable
 private fun ExpandableCardHeader(
-    title: String = "TODO",
+    title: @Composable () -> Unit,
-    transition: Transition<Boolean>
+    transition: Transition<Boolean>?
 ) {
     Box(
         modifier = Modifier
@@ -139,7 +162,8 @@ private fun ExpandableCardHeader(
             .padding(10.dp, 0.dp),
         contentAlignment = Alignment.CenterEnd,
     ) {
+        if (transition != null)
             ExpandableCardArrow(transition)
-        ExpandableCardTitle(title)
+        title()
     }
 }

app/src/main/java/ru/n08i40k/polytechnic/next/ui/widgets/GroupSelector.kt

@@ -0,0 +1,109 @@
+package ru.n08i40k.polytechnic.next.ui.widgets
+
+import android.content.Context
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.wrapContentSize
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Email
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExposedDropdownMenuBox
+import androidx.compose.material3.ExposedDropdownMenuDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MenuAnchorType
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import ru.n08i40k.polytechnic.next.R
+import ru.n08i40k.polytechnic.next.network.request.schedule.ScheduleGetGroupNames
+
+@Composable
+private fun getGroups(context: Context, onUpdated: (String?) -> Unit): ArrayList<String?> {
+    val groupPlaceholder = stringResource(R.string.loading)
+
+    val groups = remember { arrayListOf(null, groupPlaceholder) }
+
+    LaunchedEffect(groups) {
+        ScheduleGetGroupNames(context, {
+            groups.clear()
+            groups.addAll(it.names)
+            onUpdated(groups.getOrElse(0) { "TODO" }!!)
+        }, {
+            groups.clear()
+            groups.add(null)
+            groups.add(context.getString(R.string.failed_to_fetch_group_names))
+            onUpdated(groups[1]!!)
+        }).send()
+    }
+
+    return groups
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Preview(showBackground = true)
+@Composable
+fun GroupSelector(
+    value: String? = "ИС-214/24",
+    isError: Boolean = false,
+    readOnly: Boolean = false,
+    onValueChange: (String?) -> Unit = {},
+) {
+    var expanded by remember { mutableStateOf(false) }
+
+    Box(
+        modifier = Modifier.wrapContentSize()
+    ) {
+        ExposedDropdownMenuBox(
+            expanded = expanded,
+            onExpandedChange = {
+                expanded = !readOnly && !expanded
+            }
+        ) {
+            val groups = getGroups(LocalContext.current, onValueChange)
+
+            TextField(
+                label = { Text(stringResource(R.string.group)) },
+                modifier = Modifier.menuAnchor(MenuAnchorType.PrimaryEditable),
+                value = value ?: groups.getOrElse(1) { "TODO" }!!,
+                leadingIcon = {
+                    Icon(
+                        imageVector = Icons.Filled.Email,
+                        contentDescription = "group"
+                    )
+                },
+                onValueChange = {},
+                isError = isError,
+                readOnly = true,
+                trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) }
+            )
+
+            ExposedDropdownMenu(
+                expanded = expanded,
+                onDismissRequest = { expanded = false }
+            ) {
+                groups.forEach {
+                    if (it == null)
+                        return@forEach
+
+                    DropdownMenuItem(
+                        text = { Text(it) },
+                        onClick = {
+                            if (groups.size > 0 && groups[0] != null)
+                                onValueChange(it)
+                            expanded = false
+                        }
+                    )
+                }
+            }
+        }
+    }
+}

app/src/main/java/ru/n08i40k/polytechnic/next/ui/widgets/LoadingContent.kt

@@ -1,4 +1,4 @@
-package ru.n08i40k.polytechnic.next.ui
+package ru.n08i40k.polytechnic.next.ui.widgets
 
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box

app/src/main/java/ru/n08i40k/polytechnic/next/ui/widgets/NotificationCard.kt

@@ -0,0 +1,101 @@
+package ru.n08i40k.polytechnic.next.ui.widgets
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.CardDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import ru.n08i40k.polytechnic.next.ui.icons.AppIcons
+import ru.n08i40k.polytechnic.next.ui.icons.appicons.Filled
+import ru.n08i40k.polytechnic.next.ui.icons.appicons.filled.Error
+import ru.n08i40k.polytechnic.next.ui.icons.appicons.filled.Info
+import ru.n08i40k.polytechnic.next.ui.icons.appicons.filled.Warning
+import ru.n08i40k.polytechnic.next.ui.theme.extendedColorScheme
+import java.util.logging.Level
+
+@Preview(showBackground = true)
+@Composable
+fun NotificationCard(
+    level: Level = Level.SEVERE,
+    title: String = "Test",
+    content: (@Composable () -> Unit)? = null
+) {
+    val titleComposable = @Composable {
+        Box(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(10.dp),
+            contentAlignment = Alignment.Center
+        ) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                val icon = when (level) {
+                    Level.SEVERE -> AppIcons.Filled.Error
+                    Level.WARNING -> AppIcons.Filled.Warning
+                    else -> AppIcons.Filled.Info
+                }
+
+                Icon(imageVector = icon, contentDescription = "Level")
+                Icon(imageVector = icon, contentDescription = "Level")
+            }
+            Text(
+                text = title,
+                modifier = Modifier
+                    .fillMaxWidth(),
+                textAlign = TextAlign.Center,
+                style = MaterialTheme.typography.titleMedium,
+            )
+        }
+    }
+
+    val colors = when (level) {
+        Level.WARNING -> {
+            val colorFamily = extendedColorScheme().warning
+            CardDefaults.cardColors(
+                containerColor = colorFamily.colorContainer,
+                contentColor = colorFamily.onColorContainer
+            )
+        }
+
+        Level.SEVERE -> CardDefaults.cardColors(
+            containerColor = MaterialTheme.colorScheme.errorContainer,
+            contentColor = MaterialTheme.colorScheme.onErrorContainer,
+        )
+
+        else -> CardDefaults.cardColors()
+    }
+
+    if (content != null) {
+        var expanded by remember { mutableStateOf(false) }
+
+        ExpandableCard(
+            expanded = expanded,
+            onExpandedChange = { expanded = !expanded },
+            content = content,
+            title = titleComposable,
+            colors = colors
+        )
+    } else {
+        ExpandableCard(
+            title = titleComposable,
+            colors = colors
+        )
+    }
+
+}

app/src/main/java/ru/n08i40k/polytechnic/next/ui/widgets/RoleSelector.kt

@@ -0,0 +1,76 @@
+package ru.n08i40k.polytechnic.next.ui.widgets
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.wrapContentSize
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.ExposedDropdownMenuBox
+import androidx.compose.material3.ExposedDropdownMenuDefaults
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MenuAnchorType
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.tooling.preview.Preview
+import ru.n08i40k.polytechnic.next.R
+import ru.n08i40k.polytechnic.next.model.UserRole
+import ru.n08i40k.polytechnic.next.model.UserRole.Companion.AcceptableUserRoles
+
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Preview(showBackground = true)
+@Composable
+fun RoleSelector(
+    value: UserRole = UserRole.STUDENT,
+    isError: Boolean = false,
+    readOnly: Boolean = false,
+    onValueChange: (UserRole) -> Unit = {},
+) {
+    var expanded by remember { mutableStateOf(false) }
+
+    Box(
+        modifier = Modifier.wrapContentSize()
+    ) {
+        ExposedDropdownMenuBox(
+            expanded = expanded,
+            onExpandedChange = { expanded = !readOnly && !expanded }
+        ) {
+            TextField(
+                label = { Text(stringResource(R.string.role)) },
+                modifier = Modifier.menuAnchor(MenuAnchorType.PrimaryEditable),
+                value = stringResource(value.stringId),
+                leadingIcon = {
+                    Icon(
+                        imageVector = value.icon,
+                        contentDescription = "role icon"
+                    )
+                },
+                onValueChange = {},
+                isError = isError,
+                readOnly = true,
+                trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) }
+            )
+
+            ExposedDropdownMenu(
+                expanded = expanded,
+                onDismissRequest = { expanded = false }) {
+                AcceptableUserRoles.forEach {
+                    DropdownMenuItem(
+                        leadingIcon = { Icon(it.icon, contentDescription = "Role icon") },
+                        text = { Text(stringResource(it.stringId)) },
+                        onClick = {
+                            expanded = false
+                            onValueChange(it)
+                        }
+                    )
+                }
+            }
+        }
+    }
+}

app/src/main/java/ru/n08i40k/polytechnic/next/work/ScheduleClvAlarm.kt

@@ -1,29 +0,0 @@
-package ru.n08i40k.polytechnic.next.work
-
-import android.content.Context
-import androidx.work.Worker
-import androidx.work.WorkerParameters
-import kotlinx.coroutines.runBlocking
-import ru.n08i40k.polytechnic.next.PolytechnicApplication
-import ru.n08i40k.polytechnic.next.data.MyResult
-
-class ScheduleClvAlarm(context: Context, workerParams: WorkerParameters) :
-    Worker(context, workerParams) {
-    override fun doWork(): Result {
-        val application = applicationContext as PolytechnicApplication
-
-        val result = runBlocking {
-            application
-                .container
-                .scheduleRepository
-                .getGroup()
-        }
-
-        if (result is MyResult.Failure)
-            return Result.failure()
-
-        application.scheduleClvService((result as MyResult.Success).data)
-
-        return Result.success()
-    }
-}

app/src/main/java/ru/n08i40k/polytechnic/next/work/StartClvService.kt

@@ -1,41 +0,0 @@
-package ru.n08i40k.polytechnic.next.work
-
-import android.content.Context
-import android.content.Intent
-import androidx.core.content.ContextCompat.startForegroundService
-import androidx.work.Worker
-import androidx.work.WorkerParameters
-import kotlinx.coroutines.runBlocking
-import ru.n08i40k.polytechnic.next.PolytechnicApplication
-import ru.n08i40k.polytechnic.next.data.MyResult
-import ru.n08i40k.polytechnic.next.service.CurrentLessonViewService
-
-class StartClvService(context: Context, workerParams: WorkerParameters) :
-    Worker(context, workerParams) {
-    override fun doWork(): Result {
-        val schedule = runBlocking {
-            (applicationContext as PolytechnicApplication)
-                .container
-                .scheduleRepository
-                .getGroup()
-        }
-
-        if (schedule is MyResult.Failure)
-            return Result.success()
-
-        val intent = Intent(applicationContext, CurrentLessonViewService::class.java)
-            .apply {
-                putExtra("group", (schedule as MyResult.Success).data)
-            }
-
-        applicationContext.stopService(
-            Intent(
-                applicationContext,
-                CurrentLessonViewService::class.java
-            )
-        )
-        startForegroundService(applicationContext, intent)
-
-        return Result.success()
-    }
-}

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

@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <foreground>
-        <inset
-            android:drawable="@drawable/logo"
-            android:inset="20dp" />
-    </foreground>
-
-    <background android:drawable="@color/white" />
-
-    <monochrome>
-        <inset
-            android:drawable="@drawable/logo"
-            android:inset="20dp" />
-    </monochrome>
-</adaptive-icon>

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

@@ -0,0 +1,19 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="81.5"
+    android:viewportHeight="81.5">
+  <group android:scaleX="0.5265958"
+      android:scaleY="0.5265958"
+      android:translateX="19.291224"
+      android:translateY="19.291224">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M51.89,64.09c0,1.22 -0.06,2.8 2.48,4.03 2.55,1.23 5.58,-2.19 7.04,-3.69 1.46,-1.5 5.46,-6.51 5.46,-7.91 0,-0.77 -1.56,-2.28 -2.77,-0.36l-2,3.14c-1.45,2.13 -8.07,9.83 -7.43,4.3 0.74,-6.42 6.07,-28.1 6.07,-28.76 0,-1.45 -2.03,-2.42 -2.88,-0.1l-4.98,24.31c-0.31,1.21 -0.49,2.44 -0.77,3.62 -0.14,0.61 -0.22,0.69 -0.22,1.43h0Z"/>
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M5.33,39.39c0,1.71 2.35,1.81 3.01,-0.31 0.17,-0.53 0.17,-0.77 0.36,-1.28l1.6,-3.35c0.43,-0.76 0.78,-1.48 1.27,-2.22l4.21,-5.89c0.59,-0.79 1.09,-1.08 1.67,-1.82l2.21,-2.2c2.95,-2.54 5.98,-4.96 9.83,-6.18 11.36,-3.5 19.74,2.13 19.28,14.3 0,0.7 -1.94,1.18 -2.58,1.47 -4.35,1.9 -8.65,3.99 -13.11,5.69 -2.01,0.76 -3.26,1.1 -3.63,2.01 -0.37,0.91 0.13,1.85 1.01,1.98 0.88,0.12 2.75,-0.86 3.87,-1.33 1.08,-0.45 12.96,-6.07 14.07,-6.16 -0.24,1.97 -0.92,4.08 -1.58,5.93l-0.54,1.29c-2.27,5.24 -5.46,9.65 -9.08,14.04 -2.46,2.83 -5.74,6.02 -8.98,7.93l-5.24,2.5c-4.75,1.77 -10.16,0.07 -13.25,-3.7 -0.41,-0.5 -0.69,-1.31 -0.84,-1.91 -0.22,-0.93 0.07,-2.48 -0.6,-3.24 -0.85,-0.96 -2.41,-0.43 -2.41,0.92 0,5.07 2.79,7.94 7.15,10.11 3.8,1.89 8.59,1.37 12.37,-0.14l1.78,-0.79c5.11,-2.78 9.5,-6.62 13.14,-11.13 3.48,-4.27 6.64,-8.87 8.74,-14.02l1.11,-3.11c0.29,-0.82 0.43,-1.38 0.57,-2.17 0.98,-3.89 -0.32,-3.35 2.5,-4.66 7.13,-3.13 14.12,-6.43 21.3,-9.47 0.77,-0.33 1.43,-0.41 1.6,-1.34 0.1,-0.55 -0.21,-1.32 -0.97,-1.54 -0.75,-0.22 -1.36,0.26 -2.07,0.55 -7.55,3.07 -15.9,7.61 -19.81,8.78 -2.85,1.53 -1.9,-0.01 -2.42,-4.66 -1.17,-6.1 -5.82,-10.61 -12,-11.61 -6.59,-1.2 -12.17,1.22 -17.45,4.66l-0.4,0.34s-0.07,0.06 -0.1,0.08l-2.52,2.08c-3.35,2.69 -6,6.24 -8.39,9.8 -1.41,2.13 -4.7,7.55 -4.7,9.79Z"
+        tools:ignore="VectorPath" />
+  </group>
+</vector>

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

@@ -1,16 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <foreground>
-        <inset
-            android:drawable="@drawable/logo"
-            android:inset="20dp" />
-    </foreground>
-
-    <background android:drawable="@color/white" />
-
-    <monochrome>
-        <inset
-            android:drawable="@drawable/logo"
-            android:inset="20dp" />
-    </monochrome>
-</adaptive-icon>

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

@@ -1,12 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="81.5dp"
-    android:height="81.5dp"
-    android:viewportWidth="81.5"
-    android:viewportHeight="81.5">
-  <path
-      android:fillColor="#FF000000"
-      android:pathData="M51.89,64.09c0,1.22 -0.06,2.8 2.48,4.03 2.55,1.23 5.58,-2.19 7.04,-3.69 1.46,-1.5 5.46,-6.51 5.46,-7.91 0,-0.77 -1.56,-2.28 -2.77,-0.36l-2,3.14c-1.45,2.13 -8.07,9.83 -7.43,4.3 0.74,-6.42 6.07,-28.1 6.07,-28.76 0,-1.45 -2.03,-2.42 -2.88,-0.1l-4.98,24.31c-0.31,1.21 -0.49,2.44 -0.77,3.62 -0.14,0.61 -0.22,0.69 -0.22,1.43h0Z"/>
-  <path
-      android:fillColor="#FF000000"
-      android:pathData="M5.33,39.39c0,1.71 2.35,1.81 3.01,-0.31 0.17,-0.53 0.17,-0.77 0.36,-1.28l1.6,-3.35c0.43,-0.76 0.78,-1.48 1.27,-2.22l4.21,-5.89c0.59,-0.79 1.09,-1.08 1.67,-1.82l2.21,-2.2c2.95,-2.54 5.98,-4.96 9.83,-6.18 11.36,-3.5 19.74,2.13 19.28,14.3 0,0.7 -1.94,1.18 -2.58,1.47 -4.35,1.9 -8.65,3.99 -13.11,5.69 -2.01,0.76 -3.26,1.1 -3.63,2.01 -0.37,0.91 0.13,1.85 1.01,1.98 0.88,0.12 2.75,-0.86 3.87,-1.33 1.08,-0.45 12.96,-6.07 14.07,-6.16 -0.24,1.97 -0.92,4.08 -1.58,5.93l-0.54,1.29c-2.27,5.24 -5.46,9.65 -9.08,14.04 -2.46,2.83 -5.74,6.02 -8.98,7.93l-5.24,2.5c-4.75,1.77 -10.16,0.07 -13.25,-3.7 -0.41,-0.5 -0.69,-1.31 -0.84,-1.91 -0.22,-0.93 0.07,-2.48 -0.6,-3.24 -0.85,-0.96 -2.41,-0.43 -2.41,0.92 0,5.07 2.79,7.94 7.15,10.11 3.8,1.89 8.59,1.37 12.37,-0.14l1.78,-0.79c5.11,-2.78 9.5,-6.62 13.14,-11.13 3.48,-4.27 6.64,-8.87 8.74,-14.02l1.11,-3.11c0.29,-0.82 0.43,-1.38 0.57,-2.17 0.98,-3.89 -0.32,-3.35 2.5,-4.66 7.13,-3.13 14.12,-6.43 21.3,-9.47 0.77,-0.33 1.43,-0.41 1.6,-1.34 0.1,-0.55 -0.21,-1.32 -0.97,-1.54 -0.75,-0.22 -1.36,0.26 -2.07,0.55 -7.55,3.07 -15.9,7.61 -19.81,8.78 -2.85,1.53 -1.9,-0.01 -2.42,-4.66 -1.17,-6.1 -5.82,-10.61 -12,-11.61 -6.59,-1.2 -12.17,1.22 -17.45,4.66l-0.4,0.34s-0.07,0.06 -0.1,0.08l-2.52,2.08c-3.35,2.69 -6,6.24 -8.39,9.8 -1.41,2.13 -4.7,7.55 -4.7,9.79Z"/>
-</vector>

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

@@ -0,0 +1,69 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="22dp"
+    android:height="18.80dp"
+    android:viewportWidth="100"
+    android:viewportHeight="85.47">
+  <path
+      android:pathData="M14.99,12.42L85.01,12.42A13.04,13.04 0,0 1,98.05 25.46L98.05,70.48A13.04,13.04 0,0 1,85.01 83.52L14.99,83.52A13.04,13.04 0,0 1,1.95 70.48L1.95,25.46A13.04,13.04 0,0 1,14.99 12.42z"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="3.9016"
+      android:fillColor="#00000000"
+      android:strokeColor="#000000"/>
+  <path
+      android:pathData="M100,30.35L0,30.35"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#000000"/>
+  <path
+      android:pathData="m17,10.81v-4.11c0,-2.61 1.79,-4.7 4.01,-4.7h7.3c2.22,0 4.01,2.1 4.01,4.7v4.11"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#000000"/>
+  <path
+      android:pathData="m67.68,10.81v-4.11c0,-2.61 1.79,-4.7 4.01,-4.7h7.3c2.22,0 4.01,2.1 4.01,4.7v4.11"
+      android:strokeWidth="4"
+      android:fillColor="#00000000"
+      android:strokeColor="#000000"/>
+  <path
+      android:pathData="M19.51,45.64m-4.26,0a4.26,4.26 89.5,1 1,8.52 0a4.26,4.26 89.5,1 1,-8.52 0"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M34.4,41.38L80.52,41.38A4.23,4.23 90.46,0 1,84.75 45.61L84.75,45.67A4.23,4.23 90.46,0 1,80.52 49.9L34.4,49.9A4.23,4.23 90.46,0 1,30.17 45.67L30.17,45.61A4.23,4.23 90.46,0 1,34.4 41.38z"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4.83"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M19.51,56.98m-4.26,0a4.26,4.26 89.5,1 1,8.52 0a4.26,4.26 89.5,1 1,-8.52 0"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M34.4,52.72L80.52,52.72A4.23,4.23 90.46,0 1,84.75 56.95L84.75,57.01A4.23,4.23 90.46,0 1,80.52 61.24L34.4,61.24A4.23,4.23 90.46,0 1,30.17 57.01L30.17,56.95A4.23,4.23 90.46,0 1,34.4 52.72z"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4.83"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M19.51,68.32m-4.26,0a4.26,4.26 89.5,1 1,8.52 0a4.26,4.26 89.5,1 1,-8.52 0"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:strokeLineCap="butt"/>
+  <path
+      android:pathData="M34.4,64.06L80.52,64.06A4.23,4.23 90.46,0 1,84.75 68.29L84.75,68.35A4.23,4.23 90.46,0 1,80.52 72.58L34.4,72.58A4.23,4.23 90.46,0 1,30.17 68.35L30.17,68.29A4.23,4.23 90.46,0 1,34.4 64.06z"
+      android:strokeLineJoin="miter"
+      android:strokeWidth="4.83"
+      android:fillColor="#000000"
+      android:strokeColor="#00000000"
+      android:strokeLineCap="butt"/>
+</vector>

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+    <monochrome android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+    <monochrome android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>

app/src/main/res/values-ru/strings.xml

@@ -3,10 +3,9 @@
     <string name="app_name">Политехникум</string>
     <string name="username">Имя пользователя</string>
     <string name="password">Пароль</string>
-    <string name="register">Зарегистрироваться</string>
+    <string name="proceed">Продолжить</string>
-    <string name="login">Авторизоваться</string>
+    <string name="sign_in_title">Авторизация</string>
-    <string name="login_title">Авторизация</string>
+    <string name="sign_up_title">Регистрация</string>
-    <string name="register_title">Регистрация</string>
     <string name="not_registered">Не зарегистрированы?</string>
     <string name="already_registered">Уже зарегистрированы?</string>
     <string name="reload">Перезагрузить</string>
@@ -23,7 +22,7 @@
     <string name="role_admin">Администратор</string>
     <string name="group">Группа</string>
     <string name="role">Роль</string>
-    <string name="day_null">Расписание ещё не обновилось.</string>
+    <string name="day_null">На этот день расписания ещё нет!</string>
     <string name="old_password">Старый пароль</string>
     <string name="new_password">Новый пароль</string>
     <string name="loading">Загрузка…</string>
@@ -65,4 +64,13 @@
     <string name="in_gym_lc">в спорт-зале</string>
     <string name="lessons_not_started">Пары ещё не начались</string>
     <string name="waiting_for_day_start_notification_title">До начала пар %1$d ч. %2$d мин.</string>
+    <string name="outdated_schedule">Вы просматриваете устаревшее расписание!</string>
+    <string name="invalid_credentials">Некорректное имя пользователя или пароль!</string>
+    <string name="timed_out">Неудалось отправить запрос, попробуйте позже!</string>
+    <string name="app_too_old">Пожалуйста обновите приложение!</string>
+    <string name="unknown_error">Произошла неизвестная ошибка! Попробуйте позже.</string>
+    <string name="failed_to_fetch_group_names">Не удалось получить список названий групп!</string>
+    <string name="already_exists">Пользователь с таким именем уже зарегистрирован!</string>
+    <string name="group_does_not_exists">Группа с таким названием не существует!</string>
+    <string name="no_connection">Нет подключения к интернету!</string>
 </resources>

app/src/main/res/values/ic_launcher_background.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="ic_launcher_background">#FFFFFF</color>
+</resources>

app/src/main/res/values/strings.xml

@@ -3,10 +3,9 @@
 
     <string name="username">Username</string>
     <string name="password">Password</string>
-    <string name="register">Register</string>
+    <string name="proceed">Proceed</string>
-    <string name="login">Login</string>
+    <string name="sign_in_title">Sign In</string>
-    <string name="login_title">Login</string>
+    <string name="sign_up_title">Sign Up</string>
-    <string name="register_title">Registration</string>
     <string name="not_registered">Not registered?</string>
     <string name="already_registered">Already registered?</string>
     <string name="reload">Reload</string>
@@ -23,7 +22,7 @@
     <string name="role_admin">Administrator</string>
     <string name="group">Group</string>
     <string name="role">Role</string>
-    <string name="day_null">Schedule not updated yet.</string>
+    <string name="day_null">There is no schedule for this day yet!</string>
     <string name="old_password">Old password</string>
     <string name="new_password">New password</string>
     <string name="change_password">Change password</string>
@@ -65,4 +64,13 @@
     <string name="in_gym_lc">in gym</string>
     <string name="lessons_not_started">Lessons haven\'t started yet</string>
     <string name="waiting_for_day_start_notification_title">%1$d h. %2$d min. before lessons start</string>
+    <string name="outdated_schedule">You are viewing an outdated schedule!</string>
+    <string name="invalid_credentials">Invalid credentials!</string>
+    <string name="timed_out">Failed to send request, try again later!</string>
+    <string name="app_too_old">Please update the application!</string>
+    <string name="unknown_error">An unknown error has occurred! Please try again later.</string>
+    <string name="failed_to_fetch_group_names">Failed to get list of group names!</string>
+    <string name="already_exists">A user with this name is already registered!</string>
+    <string name="group_does_not_exists">A group with this name does not exist!</string>
+    <string name="no_connection">No internet connection!</string>
 </resources>