lw4

app/build.gradle.kts

@@ -10,7 +10,7 @@ android {
 
     defaultConfig {
         applicationId = "com.example.myapplication"
-        minSdk = 24
+        minSdk = 26
         targetSdk = 33
         versionCode = 1
         versionName = "1.0"
@@ -31,6 +31,7 @@ android {
         }
     }
     compileOptions {
+        isCoreLibraryDesugaringEnabled = true
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17
     }
@@ -51,8 +52,16 @@ android {
 }
 
 dependencies {
-    implementation("com.jakewharton.threetenabp:threetenabp:1.2.1")
+    implementation("org.threeten:threetenbp:1.5.0")
     implementation("androidx.datastore:datastore-preferences:1.0.0")
+    implementation("io.github.vanpra.compose-material-dialogs:datetime:0.8.1-rc")
+    coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:1.1.6")
+
+    // Pagination
+    val paging_version = "3.2.0-rc01"
+    implementation("androidx.paging:paging-runtime:$paging_version")
+    implementation("androidx.paging:paging-compose:$paging_version")
+
     // Core
     implementation("androidx.core:core-ktx:1.9.0")
     implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
@@ -64,7 +73,7 @@ dependencies {
     implementation("androidx.compose.ui:ui")
     implementation("androidx.compose.ui:ui-graphics")
     implementation("androidx.compose.ui:ui-tooling-preview")
-    implementation("androidx.compose.material3:material3")
+    implementation("androidx.compose.material3:material3:1.1.2")
 
     // Room
     val room_version = "2.5.2"

app/src/androidTest/java/com/example/myapplication/ExampleInstrumentedTest.kt

@@ -1,13 +1,11 @@
 package com.example.myapplication
 
-import androidx.test.platform.app.InstrumentationRegistry
 import androidx.test.ext.junit.runners.AndroidJUnit4
-
+import androidx.test.platform.app.InstrumentationRegistry
+import org.junit.Assert.*
 import org.junit.Test
 import org.junit.runner.RunWith
 
-import org.junit.Assert.*
-
 /**
  * Instrumented test, which will execute on an Android device.
  *

app/src/main/AndroidManifest.xml

@@ -3,6 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools">
 
     <application
+        android:name=".CinemaApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"

app/src/main/java/com/example/myapplication/CinemaApplication.kt

@@ -0,0 +1,14 @@
+package com.example.myapplication
+
+import android.app.Application
+import com.example.myapplication.database.AppContainer
+import com.example.myapplication.database.AppDataContainer
+
+class CinemaApplication : Application() {
+    lateinit var container: AppContainer
+
+    override fun onCreate() {
+        super.onCreate()
+        container = AppDataContainer(this)
+    }
+}

app/src/main/java/com/example/myapplication/MainComposeActivity.kt

@@ -12,7 +12,8 @@ import androidx.compose.ui.Modifier
 import com.example.myapplication.composeui.navigation.MainNavbar
 import com.example.myapplication.datastore.DataStoreManager
 import com.example.myapplication.ui.theme.PmudemoTheme
-import com.jakewharton.threetenabp.AndroidThreeTen
+
+//import com.jakewharton.threetenabp.AndroidThreeTen
 
 class MainComposeActivity : ComponentActivity() {
     private val dataStoreManager = DataStoreManager(this)
@@ -20,7 +21,7 @@ class MainComposeActivity : ComponentActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         application.deleteDatabase("pmy-db")
-        AndroidThreeTen.init(this)
+        //AndroidThreeTen.init(this)
         setContent {
             PmudemoTheme(darkTheme = isDarkTheme.value) {
                 LaunchedEffect(key1 = true) {

app/src/main/java/com/example/myapplication/composeui/Cart.kt

@@ -2,6 +2,8 @@ package com.example.myapplication.composeui
 
 import android.content.res.Configuration
 import android.graphics.BitmapFactory
+import androidx.compose.animation.animateColorAsState
+import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.Arrangement
@@ -9,6 +11,7 @@ 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.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@@ -17,157 +20,125 @@ import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.outlined.Delete
 import androidx.compose.material3.Button
+import androidx.compose.material3.DismissDirection
+import androidx.compose.material3.DismissState
+import androidx.compose.material3.DismissValue
+import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
+import androidx.compose.material3.SwipeToDismiss
 import androidx.compose.material3.Text
+import androidx.compose.material3.rememberDismissState
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateListOf
 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.draw.clip
+import androidx.compose.ui.draw.scale
+import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.graphics.vector.ImageVector
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.vectorResource
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import com.example.myapplication.R
-import com.example.myapplication.database.AppDatabase
+import com.example.myapplication.database.entities.composeui.AppViewModelProvider
-import com.example.myapplication.entities.model.SessionFromCart
+import com.example.myapplication.database.entities.composeui.CartUiState
+import com.example.myapplication.database.entities.composeui.CartViewModel
+import com.example.myapplication.database.entities.model.Session
+import com.example.myapplication.database.entities.model.SessionFromCart
 import com.example.myapplication.ui.theme.PmudemoTheme
-import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
-import kotlinx.coroutines.withContext
 import org.threeten.bp.format.DateTimeFormatter
 
 @Composable
-fun Cart(id: Int) {
+fun Cart(
-    val context = LocalContext.current
+    viewModel: CartViewModel = viewModel(factory = AppViewModelProvider.Factory)
-    val sessions = remember { mutableStateListOf<SessionFromCart>() }
+) {
-    LaunchedEffect(Unit) {
+    val coroutineScope = rememberCoroutineScope()
-        withContext(Dispatchers.IO) {
+    val cartUiState by viewModel.cartUiState.collectAsState()
-            AppDatabase.getInstance(context).userDao().getCartByUid(id).collect { data ->
+
-                sessions.clear()
+    Cart(
-                sessions.addAll(data)
+        cartUiState = cartUiState,
+        modifier = Modifier
+            .padding(all = 10.dp),
+        onSwipe = { session: SessionFromCart, user: Int ->
+            coroutineScope.launch {
+                viewModel.removeFromCart(
+                    session = Session(
+                        uid = session.uid,
+                        dateTime = session.dateTime,
+                        price = session.price,
+                        maxCount = 0,
+                        cinemaId = session.cinemaId
+                    ), user = user
+                )
+            }
+        },
+        onChangeCount = { session: SessionFromCart, user: Int, count: Int ->
+            coroutineScope.launch {
+                viewModel.updateFromCart(
+                    session = Session(
+                        uid = session.uid,
+                        dateTime = session.dateTime,
+                        price = session.price,
+                        maxCount = 0,
+                        cinemaId = session.cinemaId
+                    ), userId = user, count = count, availableCount = session.availableCount
+                )
+            }
+        },
+        onAddToOrder = { sessions: List<SessionFromCart>, user: Int ->
+            coroutineScope.launch {
+                viewModel.addToOrder(sessions = sessions, userId = user)
             }
         }
-    }
+    )
+}
 
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun Cart(
+    cartUiState: CartUiState,
+    modifier: Modifier,
+    onSwipe: (SessionFromCart, Int) -> Unit,
+    onChangeCount: (SessionFromCart, Int, Int) -> Unit,
+    onAddToOrder: (List<SessionFromCart>, Int) -> Unit
+) {
     LazyColumn(
-        modifier = Modifier
+        modifier = modifier
-            .padding(all = 10.dp)
     ) {
-        items(sessions) { session ->
+        items(cartUiState.sessionList, key = { it.uid.toString() }) { session ->
-            var currentCount by remember { mutableStateOf(session.count) }
+            val dismissState: DismissState = rememberDismissState(
-
+                positionalThreshold = { 200.dp.toPx() }
-            val dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
-            val formattedDate = dateFormatter.format(session.dateTime)
-
-            Text(
-                text = formattedDate,
-                color = MaterialTheme.colorScheme.onBackground,
             )
-            Box(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .padding(10.dp)
-                    .clip(RoundedCornerShape(16.dp))
-                    .background(MaterialTheme.colorScheme.secondary)
-            ) {
-                Row(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(8.dp),
-                    verticalAlignment = Alignment.CenterVertically,
-                    horizontalArrangement = Arrangement.SpaceBetween
-                ) {
-                    if (session.cinema.image != null)
-                        Image(
-                            bitmap = BitmapFactory.decodeByteArray(
-                                session.cinema.image,
-                                0,
-                                session.cinema.image.size
-                            ).asImageBitmap(),
-                            contentDescription = null,
-                            modifier = Modifier
-                                .size(90.dp)
-                                .padding(4.dp)
-                        )
 
-                    Column(
+            if (dismissState.isDismissed(direction = DismissDirection.EndToStart)) {
-                        modifier = Modifier.weight(1f),
+                onSwipe(session, 1)
-                        verticalArrangement = Arrangement.spacedBy(4.dp)
-                    ) {
-                        Text(
-                            text = "${session.cinema.name}, ${session.cinema.year}\n" +
-                                    "Цена: ${session.price}\n" +
-                                    "${currentCount}/${session.availableCount}",
-                            color = MaterialTheme.colorScheme.onSecondary
-                        )
-                    }
-
-                    Box(
-                        modifier = Modifier
-                            .background(
-                                color = MaterialTheme.colorScheme.background,
-                                shape = RoundedCornerShape(10.dp)
-                            ) // Задаем фон для кнопок
-                    ) {
-                        Row(
-                            verticalAlignment = Alignment.CenterVertically
-                        ) {
-                            IconButton(
-                                onClick = {
-                                    if (currentCount > 0) {
-                                        currentCount--
-                                    }
-                                }
-                            ) {
-                                Icon(
-                                    imageVector = ImageVector.vectorResource(id = R.drawable.minus),
-                                    contentDescription = "Уменьшить",
-                                    tint = MaterialTheme.colorScheme.onBackground,
-                                    modifier = Modifier.size(10.dp)
-                                )
-                            }
-
-                            Text(
-                                text = "$currentCount",
-                                color = MaterialTheme.colorScheme.onBackground
-                            )
-
-                            IconButton(
-                                onClick = {
-                                    if (currentCount < session.availableCount) {
-                                        currentCount++
-                                    }
-                                }
-                            ) {
-                                Icon(
-                                    imageVector = Icons.Default.Add,
-                                    contentDescription = "Увеличить",
-                                    tint = MaterialTheme.colorScheme.onBackground,
-                                    modifier = Modifier.size(10.dp)
-                                )
-                            }
-                        }
-                    }
-                }
             }
+
+            SwipeToDelete(
+                dismissState = dismissState,
+                session = session,
+                onChangeCount = onChangeCount
+            )
         }
     }
     Column {
         Spacer(modifier = Modifier.weight(1f))
 
         Button(
-            onClick = { },
+            onClick = { onAddToOrder(cartUiState.sessionList, 1) },
             modifier = Modifier
                 .padding(16.dp)
                 .fillMaxWidth()
@@ -175,6 +146,151 @@ fun Cart(id: Int) {
     }
 }
 
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun SwipeToDelete(
+    dismissState: DismissState,
+    session: SessionFromCart,
+    onChangeCount: (SessionFromCart, Int, Int) -> Unit,
+) {
+    SwipeToDismiss(
+        state = dismissState,
+        directions = setOf(
+            DismissDirection.EndToStart
+        ),
+        background = {
+            val backgroundColor by animateColorAsState(
+                when (dismissState.targetValue) {
+                    DismissValue.DismissedToStart -> Color.Red.copy(alpha = 0.8f)
+                    else -> MaterialTheme.colorScheme.background
+                },
+                label = ""
+            )
+            val iconScale by animateFloatAsState(
+                targetValue = if (dismissState.targetValue == DismissValue.DismissedToStart) 1.3f else 0.5f,
+                label = ""
+            )
+            Box(
+                Modifier
+                    .fillMaxSize()
+                    .background(color = backgroundColor)
+                    .padding(end = 16.dp),
+                contentAlignment = Alignment.CenterEnd
+            ) {
+                Icon(
+                    modifier = Modifier.scale(iconScale),
+                    imageVector = Icons.Outlined.Delete,
+                    contentDescription = "Delete",
+                    tint = Color.White
+                )
+            }
+        },
+        dismissContent = {
+            SessionListItem(
+                session = session,
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(10.dp)
+                    .clip(RoundedCornerShape(16.dp))
+                    .background(MaterialTheme.colorScheme.secondary),
+                onChangeCount = onChangeCount
+            )
+        }
+    )
+}
+
+@Composable
+private fun SessionListItem(
+    session: SessionFromCart,
+    modifier: Modifier = Modifier,
+    onChangeCount: (SessionFromCart, Int, Int) -> Unit,
+) {
+    var currentCount by remember { mutableStateOf(session.count) }
+
+    val dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
+    val formattedDate = dateFormatter.format(session.dateTime)
+    Column {
+        Text(
+            text = formattedDate,
+            color = MaterialTheme.colorScheme.onBackground,
+        )
+        Box(
+            modifier = modifier
+        ) {
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(8.dp),
+                verticalAlignment = Alignment.CenterVertically,
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                if (session.cinema.image != null)
+                    Image(
+                        bitmap = BitmapFactory.decodeByteArray(
+                            session.cinema.image,
+                            0,
+                            session.cinema.image.size
+                        ).asImageBitmap(),
+                        contentDescription = null,
+                        modifier = Modifier
+                            .size(90.dp)
+                            .padding(4.dp)
+                    )
+
+                Column(
+                    modifier = Modifier.weight(1f),
+                    verticalArrangement = Arrangement.spacedBy(4.dp)
+                ) {
+                    Text(
+                        text = "${session.cinema.name}, ${session.cinema.year}\n" +
+                                "Цена: ${session.price}\n" +
+                                "${currentCount}/${session.availableCount}",
+                        color = MaterialTheme.colorScheme.onSecondary
+                    )
+                }
+
+                Box(
+                    modifier = Modifier
+                        .background(
+                            color = MaterialTheme.colorScheme.background,
+                            shape = RoundedCornerShape(10.dp)
+                        ) // Задаем фон для кнопок
+                ) {
+                    Row(
+                        verticalAlignment = Alignment.CenterVertically
+                    ) {
+                        IconButton(
+                            onClick = { onChangeCount(session, 1, --currentCount) }
+                        ) {
+                            Icon(
+                                imageVector = ImageVector.vectorResource(id = R.drawable.minus),
+                                contentDescription = "Уменьшить",
+                                tint = MaterialTheme.colorScheme.onBackground,
+                                modifier = Modifier.size(10.dp)
+                            )
+                        }
+
+                        Text(
+                            text = "$currentCount",
+                            color = MaterialTheme.colorScheme.onBackground
+                        )
+
+                        IconButton(
+                            onClick = { onChangeCount(session, 1, ++currentCount) }
+                        ) {
+                            Icon(
+                                imageVector = Icons.Default.Add,
+                                contentDescription = "Увеличить",
+                                tint = MaterialTheme.colorScheme.onBackground,
+                                modifier = Modifier.size(10.dp)
+                            )
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
 
 @Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
 @Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
@@ -184,7 +300,7 @@ fun CartPreview() {
         Surface(
             color = MaterialTheme.colorScheme.background
         ) {
-            Cart(1)
+            Cart()
         }
     }
 }

app/src/main/java/com/example/myapplication/composeui/navigation/MainNavbar.kt

@@ -47,12 +47,14 @@ import androidx.navigation.compose.currentBackStackEntryAsState
 import androidx.navigation.compose.rememberNavController
 import androidx.navigation.navArgument
 import com.example.myapplication.composeui.Cart
+import com.example.myapplication.database.entities.composeui.CinemaList
+import com.example.myapplication.database.entities.composeui.CinemaView
+import com.example.myapplication.database.entities.composeui.OrderList
+import com.example.myapplication.database.entities.composeui.OrderView
+import com.example.myapplication.database.entities.composeui.UserProfile
+import com.example.myapplication.database.entities.composeui.edit.CinemaEdit
+import com.example.myapplication.database.entities.composeui.edit.SessionEdit
 import com.example.myapplication.datastore.DataStoreManager
-import com.example.myapplication.entities.composeui.CinemaList
-import com.example.myapplication.entities.composeui.CinemaView
-import com.example.myapplication.entities.composeui.OrderList
-import com.example.myapplication.entities.composeui.OrderView
-import com.example.myapplication.user.composeui.UserProfile
 
 @Composable
 fun Topbar(
@@ -175,13 +177,26 @@ fun Navhost(
     ) {
         composable(Screen.CinemaList.route) { CinemaList(navController) }
         composable(Screen.OrderList.route) { OrderList(navController, 1) }
-        composable(Screen.Cart.route) { Cart(1) }
+        composable(Screen.Cart.route) { Cart() }
         composable(Screen.UserProfile.route) { UserProfile(isDarkTheme, dataStore) }
+        composable(
+            Screen.CinemaEdit.route,
+            arguments = listOf(navArgument("id") { type = NavType.IntType })
+        ) {
+            CinemaEdit(navController)
+        }
+        composable(
+            Screen.SessionEdit.route,
+            arguments = listOf(navArgument("id") { type = NavType.IntType },
+                navArgument("cinemaId") { type = NavType.IntType })
+        ) {
+            SessionEdit(navController)
+        }
         composable(
             Screen.CinemaView.route,
             arguments = listOf(navArgument("id") { type = NavType.IntType })
         ) { backStackEntry ->
-            backStackEntry.arguments?.let { CinemaView(it.getInt("id")) }
+            backStackEntry.arguments?.let { CinemaView(navController) }
         }
         composable(
             Screen.OrderView.route,

app/src/main/java/com/example/myapplication/composeui/navigation/Screen.kt

@@ -18,6 +18,15 @@ enum class Screen(
     CinemaList(
         "Cinema-list", R.string.Cinema_main_title, Icons.Filled.Home
     ),
+    CinemaEdit(
+        "Cinema-edit/{id}", R.string.Cinema_view_title, showInBottomBar = false
+    ),
+    SessionEdit(
+        "Session-edit/{id}/{cinemaId}", R.string.Session_view_title, showInBottomBar = false
+    ),
+    CinemaView(
+        "Cinema-view/{id}", R.string.Cinema_view_title, showInBottomBar = false
+    ),
     SessionList(
         "Session-list", R.string.Sessions_title, showInBottomBar = false
     ),
@@ -27,9 +36,6 @@ enum class Screen(
     OrderList(
         "Order-list", R.string.Order_title, Icons.Filled.List
     ),
-    CinemaView(
-        "Cinema-view/{id}", R.string.Cinema_view_title, showInBottomBar = false
-    ),
     OrderView(
         "Order-view/{id}", R.string.Order_view_title, showInBottomBar = false
     ),

app/src/main/java/com/example/myapplication/database/AppContainer.kt

@@ -0,0 +1,49 @@
+package com.example.myapplication.database
+
+import android.content.Context
+import com.example.myapplication.database.entities.repository.CinemaRepository
+import com.example.myapplication.database.entities.repository.OfflineCinemaRepository
+import com.example.myapplication.database.entities.repository.OfflineOrderRepository
+import com.example.myapplication.database.entities.repository.OfflineOrderSessionRepository
+import com.example.myapplication.database.entities.repository.OfflineSessionRepository
+import com.example.myapplication.database.entities.repository.OfflineUserRepository
+import com.example.myapplication.database.entities.repository.OfflineUserSessionRepository
+import com.example.myapplication.database.entities.repository.OrderRepository
+import com.example.myapplication.database.entities.repository.OrderSessionRepository
+import com.example.myapplication.database.entities.repository.SessionRepository
+import com.example.myapplication.database.entities.repository.UserRepository
+import com.example.myapplication.database.entities.repository.UserSessionRepository
+
+interface AppContainer {
+    val cinemaRepository: CinemaRepository
+    val orderRepository: OrderRepository
+    val orderSessionRepository: OrderSessionRepository
+    val sessionRepository: SessionRepository
+    val userRepository: UserRepository
+    val userSessionRepository: UserSessionRepository
+}
+
+class AppDataContainer(private val context: Context) : AppContainer {
+    override val cinemaRepository: CinemaRepository by lazy {
+        OfflineCinemaRepository(AppDatabase.getInstance(context).cinemaDao())
+    }
+    override val orderRepository: OrderRepository by lazy {
+        OfflineOrderRepository(AppDatabase.getInstance(context).orderDao())
+    }
+    override val orderSessionRepository: OrderSessionRepository by lazy {
+        OfflineOrderSessionRepository(AppDatabase.getInstance(context).orderSessionCrossRefDao())
+    }
+    override val sessionRepository: SessionRepository by lazy {
+        OfflineSessionRepository(AppDatabase.getInstance(context).sessionDao())
+    }
+    override val userRepository: UserRepository by lazy {
+        OfflineUserRepository(AppDatabase.getInstance(context).userDao())
+    }
+    override val userSessionRepository: UserSessionRepository by lazy {
+        OfflineUserSessionRepository(AppDatabase.getInstance(context).userSessionCrossRefDao())
+    }
+
+    companion object {
+        const val TIMEOUT = 5000L
+    }
+}

app/src/main/java/com/example/myapplication/database/AppDatabase.kt

@@ -2,25 +2,24 @@ package com.example.myapplication.database
 
 import android.content.Context
 import android.graphics.Bitmap
-import android.graphics.Color
 import androidx.room.Database
 import androidx.room.Room
 import androidx.room.RoomDatabase
 import androidx.room.TypeConverters
 import androidx.sqlite.db.SupportSQLiteDatabase
-import com.example.myapplication.entities.dao.CinemaDao
+import com.example.myapplication.database.entities.dao.CinemaDao
-import com.example.myapplication.entities.dao.OrderDao
+import com.example.myapplication.database.entities.dao.OrderDao
-import com.example.myapplication.entities.dao.OrderSessionCrossRefDao
+import com.example.myapplication.database.entities.dao.OrderSessionCrossRefDao
-import com.example.myapplication.entities.dao.SessionDao
+import com.example.myapplication.database.entities.dao.SessionDao
-import com.example.myapplication.entities.dao.UserDao
+import com.example.myapplication.database.entities.dao.UserDao
-import com.example.myapplication.entities.dao.UserSessionCrossRefDao
+import com.example.myapplication.database.entities.dao.UserSessionCrossRefDao
-import com.example.myapplication.entities.model.Cinema
+import com.example.myapplication.database.entities.model.Cinema
-import com.example.myapplication.entities.model.LocalDateTimeConverter
+import com.example.myapplication.database.entities.model.LocalDateTimeConverter
-import com.example.myapplication.entities.model.Order
+import com.example.myapplication.database.entities.model.Order
-import com.example.myapplication.entities.model.OrderSessionCrossRef
+import com.example.myapplication.database.entities.model.OrderSessionCrossRef
-import com.example.myapplication.entities.model.Session
+import com.example.myapplication.database.entities.model.Session
-import com.example.myapplication.entities.model.User
+import com.example.myapplication.database.entities.model.User
-import com.example.myapplication.entities.model.UserSessionCrossRef
+import com.example.myapplication.database.entities.model.UserSessionCrossRef
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -58,12 +57,30 @@ abstract class AppDatabase : RoomDatabase() {
                 userDao.insert(user2)
                 // Cinemas
                 val cinemaDao = database.cinemaDao()
-                val cinema1 = Cinema(1, "BLUE 1", "Desc1", createColoredImage(Color.BLUE), 2023)
+                val cinema1 =
-                val cinema2 = Cinema(2, "GREEN 2", "Desc2", createColoredImage(Color.GREEN), 2023)
+                    Cinema(1, "a", "Desc1", createColoredImage(android.graphics.Color.BLUE), 2023)
-                val cinema3 = Cinema(3, "RED 3", "Desc3", createColoredImage(Color.RED), 2023)
+                val cinema2 =
+                    Cinema(2, "b", "Desc2", createColoredImage(android.graphics.Color.GREEN), 2023)
+                val cinema3 =
+                    Cinema(3, "c", "Desc3", createColoredImage(android.graphics.Color.RED), 2023)
+                val cinema4 =
+                    Cinema(4, "d", "Desc4", createColoredImage(android.graphics.Color.CYAN), 2023)
                 cinemaDao.insert(cinema1)
                 cinemaDao.insert(cinema2)
                 cinemaDao.insert(cinema3)
+                cinemaDao.insert(cinema4)
+
+                for (i in 5..20) {
+                    val cinema = Cinema(
+                        uid = i,
+                        name = generateCinemaName(i),
+                        description = "Description $i",
+                        image = createColoredImage(getRandomColorInt()),
+                        year = 2023
+                    )
+                    cinemaDao.insert(cinema)
+                }
+
                 // Orders
                 val orderDao = database.orderDao()
                 val order1 = Order(1, 1)
@@ -79,28 +96,32 @@ abstract class AppDatabase : RoomDatabase() {
                 val session1 = Session(1, LocalDateTime.now(), 150.0, 120, cinema1.uid)
                 val session2 = Session(2, LocalDateTime.now(), 200.0, 110, cinema2.uid)
                 val session3 = Session(3, LocalDateTime.now(), 300.0, 100, cinema3.uid)
-                val session4 = Session(4, LocalDateTime.now(), 320.0, 1150, cinema1.uid)
+                val session4 = Session(4, LocalDateTime.now(), 450.0, 200, cinema1.uid)
                 sessionDao.insert(session1)
                 sessionDao.insert(session2)
                 sessionDao.insert(session3)
                 sessionDao.insert(session4)
                 // OrderSessionCrossRef для связи заказов с сеансами
                 val orderSessionCrossRefDao = database.orderSessionCrossRefDao()
-                if (session1.uid != null && session2.uid != null && session3.uid != null && session4.uid != null) {
+                if (session1.uid != null && session2.uid != null && session3.uid != null) {
-                    val orderSessionCrossRef1 = OrderSessionCrossRef(order1.uid, session3.uid, 150.0, 5)
+                    val orderSessionCrossRef1 =
-                    val orderSessionCrossRef2 = OrderSessionCrossRef(order1.uid, session2.uid, 300.0, 10)
+                        OrderSessionCrossRef(order1.uid, session3.uid, 150.0, 5)
-                    val orderSessionCrossRef3 = OrderSessionCrossRef(order2.uid, session2.uid, 350.0, 6)
+                    val orderSessionCrossRef2 =
-                    val orderSessionCrossRef4 = OrderSessionCrossRef(order3.uid, session1.uid, 250.0, 10)
+                        OrderSessionCrossRef(order1.uid, session2.uid, 300.0, 10)
-                    val orderSessionCrossRef5 = OrderSessionCrossRef(order3.uid, session3.uid, 150.0, 16)
+                    val orderSessionCrossRef3 =
-                    val orderSessionCrossRef6 = OrderSessionCrossRef(order4.uid, session3.uid, 150.0, 2)
+                        OrderSessionCrossRef(order2.uid, session2.uid, 350.0, 6)
-                    //val orderSessionCrossRef7 = OrderSessionCrossRef(order4.uid, session4.uid, 110.0, 1)
+                    val orderSessionCrossRef4 =
+                        OrderSessionCrossRef(order3.uid, session1.uid, 250.0, 10)
+                    val orderSessionCrossRef5 =
+                        OrderSessionCrossRef(order3.uid, session3.uid, 150.0, 16)
+                    val orderSessionCrossRef6 =
+                        OrderSessionCrossRef(order4.uid, session3.uid, 150.0, 2)
                     orderSessionCrossRefDao.insert(orderSessionCrossRef1)
                     orderSessionCrossRefDao.insert(orderSessionCrossRef2)
                     orderSessionCrossRefDao.insert(orderSessionCrossRef3)
                     orderSessionCrossRefDao.insert(orderSessionCrossRef4)
                     orderSessionCrossRefDao.insert(orderSessionCrossRef5)
                     orderSessionCrossRefDao.insert(orderSessionCrossRef6)
-                    //orderSessionCrossRefDao.insert(orderSessionCrossRef7)
                 }
                 // UserSessions
                 val userSessionCrossRefDao = database.userSessionCrossRefDao()
@@ -143,5 +164,25 @@ abstract class AppDatabase : RoomDatabase() {
 
             return stream.toByteArray()
         }
+
+        fun getRandomColorInt(): Int {
+            val red = (0..255).random()
+            val green = (0..255).random()
+            val blue = (0..255).random()
+            return (0xFF shl 24) or (red shl 16) or (green shl 8) or blue
+        }
+
+        fun generateCinemaName(index: Int): String {
+            val base = 'a'.toInt()
+            val alphabetSize = 26
+            val sb = StringBuilder()
+            var remainder = index
+            do {
+                val letter = (remainder % alphabetSize + base).toChar()
+                sb.insert(0, letter)
+                remainder /= alphabetSize
+            } while (remainder > 0)
+            return sb.toString()
+        }
     }
 }

app/src/main/java/com/example/myapplication/database/entities/composeui/AppViewModelProvider.kt

@@ -0,0 +1,64 @@
+package com.example.myapplication.database.entities.composeui
+
+import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.createSavedStateHandle
+import androidx.lifecycle.viewmodel.CreationExtras
+import androidx.lifecycle.viewmodel.initializer
+import androidx.lifecycle.viewmodel.viewModelFactory
+import com.example.myapplication.CinemaApplication
+import com.example.myapplication.database.entities.composeui.edit.CinemaEditViewModel
+import com.example.myapplication.database.entities.composeui.edit.SessionEditViewModel
+
+object AppViewModelProvider {
+    val Factory = viewModelFactory {
+        initializer {
+            CinemaListViewModel(cinemaApplication().container.cinemaRepository)
+        }
+        initializer {
+            CinemaEditViewModel(
+                this.createSavedStateHandle(),
+                cinemaApplication().container.cinemaRepository
+            )
+        }
+        initializer {
+            CinemaViewModel(
+                this.createSavedStateHandle(),
+                cinemaApplication().container.cinemaRepository,
+            )
+        }
+        initializer {
+            SessionListViewModel(
+                cinemaApplication().container.sessionRepository,
+                cinemaApplication().container.userSessionRepository,
+            )
+        }
+        initializer {
+            SessionEditViewModel(
+                this.createSavedStateHandle(),
+                cinemaApplication().container.sessionRepository,
+            )
+        }
+        initializer {
+            CartViewModel(
+                cinemaApplication().container.userSessionRepository,
+                cinemaApplication().container.orderRepository,
+                cinemaApplication().container.orderSessionRepository,
+                cinemaApplication().container.userRepository,
+            )
+        }
+        initializer {
+            OrderListViewModel(
+                cinemaApplication().container.orderRepository,
+            )
+        }
+        initializer {
+            OrderViewModel(
+                this.createSavedStateHandle(),
+                cinemaApplication().container.orderRepository,
+            )
+        }
+    }
+}
+
+fun CreationExtras.cinemaApplication(): CinemaApplication =
+    (this[ViewModelProvider.AndroidViewModelFactory.APPLICATION_KEY] as CinemaApplication)

app/src/main/java/com/example/myapplication/database/entities/composeui/CartViewModel.kt

@@ -0,0 +1,70 @@
+package com.example.myapplication.database.entities.composeui
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.myapplication.database.AppDataContainer
+import com.example.myapplication.database.entities.model.Order
+import com.example.myapplication.database.entities.model.OrderSessionCrossRef
+import com.example.myapplication.database.entities.model.Session
+import com.example.myapplication.database.entities.model.SessionFromCart
+import com.example.myapplication.database.entities.model.UserSessionCrossRef
+import com.example.myapplication.database.entities.repository.OrderRepository
+import com.example.myapplication.database.entities.repository.OrderSessionRepository
+import com.example.myapplication.database.entities.repository.UserRepository
+import com.example.myapplication.database.entities.repository.UserSessionRepository
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
+
+class CartViewModel(
+    private val userSessionRepository: UserSessionRepository,
+    private val orderRepository: OrderRepository,
+    private val orderSessionRepository: OrderSessionRepository,
+    private val userRepository: UserRepository,
+) : ViewModel() {
+    private val userUid: Int = 1
+
+    val cartUiState: StateFlow<CartUiState> = userRepository.getCartByUser(userUid).map {
+        CartUiState(it)
+    }.stateIn(
+        scope = viewModelScope,
+        started = SharingStarted.WhileSubscribed(stopTimeoutMillis = AppDataContainer.TIMEOUT),
+        initialValue = CartUiState()
+    )
+
+    suspend fun addToOrder(userId: Int, sessions: List<SessionFromCart>) {
+        if (sessions.isEmpty())
+            return
+        val orderId = orderRepository.insertOrder(Order(0, userId))
+        sessions.forEach { session ->
+            orderSessionRepository.insertOrderSession(
+                OrderSessionCrossRef(
+                    orderId.toInt(),
+                    session.uid,
+                    session.price,
+                    session.count
+                )
+            )
+        }
+        userSessionRepository.deleteUserSessions(userId)
+    }
+
+    suspend fun removeFromCart(user: Int, session: Session, count: Int = 1) {
+        userSessionRepository.deleteUserSession(UserSessionCrossRef(user, session.uid, count))
+    }
+
+    suspend fun updateFromCart(userId: Int, session: Session, count: Int, availableCount: Int)
+            : Boolean {
+        if (count == 0) {
+            removeFromCart(userId, session, count)
+            return false
+        }
+        if (count > availableCount)
+            return false
+        userSessionRepository.updateUserSession(UserSessionCrossRef(userId, session.uid, count))
+        return true
+    }
+}
+
+data class CartUiState(val sessionList: List<SessionFromCart> = listOf())

app/src/main/java/com/example/myapplication/database/entities/composeui/CinemaList.kt

@@ -0,0 +1,198 @@
+package com.example.myapplication.database.entities.composeui
+
+import android.graphics.BitmapFactory
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+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.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.Edit
+import androidx.compose.material3.FloatingActionButton
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import androidx.paging.compose.LazyPagingItems
+import androidx.paging.compose.collectAsLazyPagingItems
+import com.example.myapplication.composeui.navigation.Screen
+import com.example.myapplication.database.entities.model.Cinema
+import kotlinx.coroutines.launch
+
+@Composable
+fun CinemaList(
+    navController: NavController,
+    viewModel: CinemaListViewModel = viewModel(factory = AppViewModelProvider.Factory)
+) {
+    val coroutineScope = rememberCoroutineScope()
+
+    val cinemaPagingItems = viewModel.cinemaPagerState.cinemaPagingData.collectAsLazyPagingItems()
+
+    fun findCinemas() {
+        coroutineScope.launch {
+            viewModel.findCinemas()
+        }
+    }
+    LaunchedEffect(1) {
+        findCinemas()
+    }
+
+    Scaffold(
+        topBar = {},
+        floatingActionButton = {
+            FloatingActionButton(
+                onClick = {
+                    val route = Screen.CinemaEdit.route.replace("{id}", 0.toString())
+                    navController.navigate(route)
+                },
+                containerColor = MaterialTheme.colorScheme.primary,
+            ) {
+                Icon(
+                    Icons.Filled.Add,
+                    "Добавить",
+                    tint = MaterialTheme.colorScheme.onPrimary
+                )
+            }
+        }
+    ) { innerPadding ->
+        CinemaList(
+            modifier = Modifier
+                .padding(innerPadding)
+                .fillMaxSize(),
+            pagingCinema = cinemaPagingItems,
+            onClick = { uid: Int ->
+                val route = Screen.CinemaView.route.replace("{id}", uid.toString())
+                navController.navigate(route)
+            },
+            onDeleteClick = { cinema: Cinema ->
+                coroutineScope.launch {
+                    viewModel.deleteCinema(cinema)
+                }
+            },
+            onEditClick = { uid: Int ->
+                val route = Screen.CinemaEdit.route.replace("{id}", uid.toString())
+                navController.navigate(route)
+            },
+        )
+    }
+}
+
+@Composable
+private fun CinemaList(
+    modifier: Modifier = Modifier,
+    pagingCinema: LazyPagingItems<Cinema>,
+    onClick: (uid: Int) -> Unit,
+    onDeleteClick: (cinema: Cinema) -> Unit,
+    onEditClick: (cinema: Int) -> Unit
+) {
+    Column(
+        modifier = modifier
+    ) {
+        LazyColumn(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(all = 10.dp)
+        ) {
+            items(pagingCinema.itemCount) { index ->
+                val cinema = pagingCinema[index]
+                if (cinema != null) {
+                    CinemaListItem(
+                        cinema = cinema,
+                        modifier = Modifier
+                            .padding(vertical = 7.dp)
+                            .clickable { onClick(cinema.uid) }
+                            .background(
+                                color = MaterialTheme.colorScheme.secondary,
+                                shape = RoundedCornerShape(16.dp)
+                            ),
+                        onDeleteClick = onDeleteClick,
+                        onEditClick = onEditClick,
+                    )
+                }
+            }
+        }
+
+    }
+}
+
+@Composable
+private fun CinemaListItem(
+    cinema: Cinema,
+    modifier: Modifier = Modifier,
+    onDeleteClick: (cinema: Cinema) -> Unit,
+    onEditClick: (cinema: Int) -> Unit
+) {
+    Box(
+        modifier = modifier
+    ) {
+        Row(
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(8.dp),
+            verticalAlignment = Alignment.CenterVertically,
+            horizontalArrangement = Arrangement.spacedBy(8.dp)
+        ) {
+            if (cinema.image != null)
+                Image(
+                    bitmap = BitmapFactory.decodeByteArray(
+                        cinema.image,
+                        0,
+                        cinema.image.size
+                    ).asImageBitmap(),
+                    contentDescription = null,
+                    modifier = Modifier
+                        .size(90.dp)
+                        .padding(4.dp)
+                )
+
+            Text(
+                "${cinema.name}, ${cinema.year}",
+                color = MaterialTheme.colorScheme.onSecondary
+            )
+
+            // Добавляем пустое пространство для разделения текста и кнопки
+            Spacer(modifier = Modifier.weight(1f))
+            IconButton(
+                onClick = { onEditClick(cinema.uid) },
+                modifier = Modifier.size(24.dp)
+            ) {
+                Icon(
+                    imageVector = Icons.Default.Edit,
+                    contentDescription = "Редактировать",
+                    tint = MaterialTheme.colorScheme.onSecondary,
+                )
+            }
+            IconButton(
+                onClick = { onDeleteClick(cinema) },
+                modifier = Modifier.size(24.dp)
+            ) {
+                Icon(
+                    imageVector = Icons.Default.Delete,
+                    contentDescription = "Удалить",
+                    tint = MaterialTheme.colorScheme.onSecondary,
+                )
+            }
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/composeui/CinemaListViewModel.kt

@@ -0,0 +1,43 @@
+package com.example.myapplication.database.entities.composeui
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.paging.Pager
+import androidx.paging.PagingConfig
+import androidx.paging.PagingData
+import com.example.myapplication.database.entities.model.Cinema
+import com.example.myapplication.database.entities.repository.CinemaRepository
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.emptyFlow
+
+class CinemaListViewModel(
+    private val cinemaRepository: CinemaRepository
+) : ViewModel() {
+    private val pagingConfig = PagingConfig(
+        pageSize = 4,
+        prefetchDistance = 4
+    )
+
+    var cinemaPagerState by mutableStateOf(CinemaPagerState())
+        private set
+
+    fun findCinemas() {
+        val pager = Pager(
+            config = pagingConfig,
+            pagingSourceFactory = {
+                cinemaRepository.getAllCinemasPaged()
+            }
+        )
+        cinemaPagerState = CinemaPagerState(pager.flow)
+    }
+
+    suspend fun deleteCinema(cinema: Cinema) {
+        cinemaRepository.deleteCinema(cinema)
+    }
+}
+
+data class CinemaPagerState(
+    val cinemaPagingData: Flow<PagingData<Cinema>> = emptyFlow()
+)

app/src/main/java/com/example/myapplication/database/entities/composeui/CinemaView.kt

@@ -0,0 +1,137 @@
+package com.example.myapplication.database.entities.composeui
+
+import android.graphics.BitmapFactory
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+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.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Add
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import com.example.myapplication.composeui.navigation.Screen
+import com.example.myapplication.database.entities.model.Cinema
+
+@Composable
+fun CinemaView(
+    navController: NavController,
+    viewModel: CinemaViewModel = viewModel(factory = AppViewModelProvider.Factory),
+) {
+    val cinemaUiState by viewModel.cinemaUiState.collectAsState()
+
+    Column(
+        modifier = Modifier
+            .padding(16.dp)
+            .fillMaxSize(),
+    ) {
+        val cinema: Cinema? = cinemaUiState.cinemaWithSessions?.cinema
+        if (cinema != null) {
+            Box(
+                modifier = Modifier
+                    .background(
+                        color = MaterialTheme.colorScheme.secondary,
+                        shape = RoundedCornerShape(16.dp)
+                    )
+            ) {
+                Column(
+                    modifier = Modifier
+                        .fillMaxWidth()
+                        .padding(16.dp)
+                        .background(color = MaterialTheme.colorScheme.secondary),
+                    verticalArrangement = Arrangement.spacedBy(8.dp)
+                ) {
+                    Row(
+                        modifier = Modifier.fillMaxWidth(),
+                        horizontalArrangement = Arrangement.SpaceBetween,
+                    ) {
+                        Text(
+                            text = "${cinema.name}, ${cinema.year}",
+                            style = TextStyle(
+                                fontWeight = FontWeight.Bold,
+                                fontSize = 18.sp,
+                                color = MaterialTheme.colorScheme.onSecondary
+                            ),
+                            modifier = Modifier
+                                .padding(bottom = 8.dp)
+                        )
+                    }
+
+                    if (cinema.image != null)
+                        Image(
+                            bitmap = BitmapFactory.decodeByteArray(
+                                cinema.image,
+                                0,
+                                cinema.image.size
+                            ).asImageBitmap(),
+                            contentDescription = null,
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .height(200.dp)
+                                .padding(4.dp)
+                        )
+
+                    Text(
+                        text = cinema.description,
+                        color = MaterialTheme.colorScheme.onSecondary
+                    )
+                }
+            }
+        }
+
+        Row(
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Text(
+                text = "Сеансы",
+                style = TextStyle(
+                    fontWeight = FontWeight.Bold,
+                    fontSize = 18.sp,
+                    color = MaterialTheme.colorScheme.onBackground
+                ),
+                modifier = Modifier
+                    .weight(1f) // Занимает доступное пространство
+                    .padding(top = 8.dp, bottom = 8.dp)
+            )
+
+            IconButton(
+                onClick = {
+                    val route = Screen.SessionEdit.route.replace("{id}", 0.toString())
+                        .replace(
+                            "{cinemaId}",
+                            cinemaUiState.cinemaWithSessions?.cinema?.uid.toString()
+                        )
+                    navController.navigate(route)
+                }
+            ) {
+                Icon(
+                    imageVector = Icons.Filled.Add,
+                    contentDescription = "Добавить сеанс",
+                )
+            }
+        }
+        if (cinemaUiState.cinemaWithSessions != null) {
+            SessionList(cinemaUiState.cinemaWithSessions!!, navController)
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/composeui/CinemaViewModel.kt

@@ -0,0 +1,31 @@
+package com.example.myapplication.database.entities.composeui
+
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.myapplication.database.AppDataContainer
+import com.example.myapplication.database.entities.model.CinemaWithSessions
+import com.example.myapplication.database.entities.repository.CinemaRepository
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
+
+class CinemaViewModel(
+    savedStateHandle: SavedStateHandle,
+    private val cinemaRepository: CinemaRepository
+) : ViewModel() {
+    private val cinemaUid: Int = checkNotNull(savedStateHandle["id"])
+
+    val cinemaUiState: StateFlow<CinemaUiState> = cinemaRepository.getCinema(
+        cinemaUid
+    ).map {
+        CinemaUiState(it)
+    }.stateIn(
+        scope = viewModelScope,
+        started = SharingStarted.WhileSubscribed(stopTimeoutMillis = AppDataContainer.TIMEOUT),
+        initialValue = CinemaUiState()
+    )
+}
+
+data class CinemaUiState(val cinemaWithSessions: CinemaWithSessions? = null)

app/src/main/java/com/example/myapplication/database/entities/composeui/OrderList.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.composeui
+package com.example.myapplication.database.entities.composeui
 
 import android.content.res.Configuration
 import androidx.compose.foundation.background
@@ -16,40 +16,32 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
-import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.getValue
-import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
 import com.example.myapplication.composeui.navigation.Screen
-import com.example.myapplication.database.AppDatabase
-import com.example.myapplication.entities.model.Order
 import com.example.myapplication.ui.theme.PmudemoTheme
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
 
 @Composable
-fun OrderList(navController: NavController?, userId: Int?) {
+fun OrderList(
-    val context = LocalContext.current
+    navController: NavController?,
-    val orders = remember { mutableStateListOf<Order>() }
+    userId: Int?,
-    LaunchedEffect(Unit) {
+    viewModel: OrderListViewModel = viewModel(factory = AppViewModelProvider.Factory)
-        withContext(Dispatchers.IO) {
+) {
-            AppDatabase.getInstance(context).orderDao().getAll(userId).collect { data ->
+    val coroutineScope = rememberCoroutineScope()
-                orders.clear()
+    val ordersUiState by viewModel.orderListUiState.collectAsState()
-                orders.addAll(data)
-            }
-        }
-    }
     LazyColumn(
         modifier = Modifier
             .fillMaxSize()
             .padding(all = 10.dp)
     ) {
-        items(orders) { order ->
+        items(ordersUiState.orderList) { order ->
             val orderId = Screen.OrderView.route.replace("{id}", order.uid.toString())
             Box(
                 modifier = Modifier

app/src/main/java/com/example/myapplication/database/entities/composeui/OrderListViewModel.kt

@@ -0,0 +1,25 @@
+package com.example.myapplication.database.entities.composeui
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.myapplication.database.AppDataContainer
+import com.example.myapplication.database.entities.model.Order
+import com.example.myapplication.database.entities.repository.OrderRepository
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
+
+class OrderListViewModel(
+    private val orderRepository: OrderRepository
+) : ViewModel() {
+    val orderListUiState: StateFlow<OrderListUiState> = orderRepository.getAllOrders(1).map {
+        OrderListUiState(it)
+    }.stateIn(
+        scope = viewModelScope,
+        started = SharingStarted.WhileSubscribed(stopTimeoutMillis = AppDataContainer.TIMEOUT),
+        initialValue = OrderListUiState()
+    )
+}
+
+data class OrderListUiState(val orderList: List<Order> = listOf())

app/src/main/java/com/example/myapplication/database/entities/composeui/OrderView.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.composeui
+package com.example.myapplication.database.entities.composeui
 
 import android.content.res.Configuration
 import android.graphics.BitmapFactory
@@ -18,42 +18,33 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
-import androidx.compose.runtime.mutableStateListOf
+import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.asImageBitmap
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.dp
-import com.example.myapplication.database.AppDatabase
+import androidx.lifecycle.viewmodel.compose.viewModel
-import com.example.myapplication.entities.model.SessionFromOrder
 import com.example.myapplication.ui.theme.PmudemoTheme
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
 import org.threeten.bp.format.DateTimeFormatter
 
 @Composable
-fun OrderView(id: Int) {
+fun OrderView(
-    val context = LocalContext.current
+    id: Int,
-    val sessions = remember {
+    viewModel: OrderViewModel = viewModel(factory = AppViewModelProvider.Factory)
-        mutableStateListOf<SessionFromOrder>()
+) {
-    }
+    val coroutineScope = rememberCoroutineScope()
-    LaunchedEffect(Unit) {
+    val orderUiState by viewModel.orderUiState.collectAsState()
-        withContext(Dispatchers.IO) {
-            sessions.clear()
-            sessions.addAll(AppDatabase.getInstance(context).orderDao().getByUid(id))
-        }
-    }
-
     LazyColumn(
         modifier = Modifier
             .padding(10.dp)
     ) {
-        items(sessions) { session ->
+        items(orderUiState.sessionList) { session ->
             val count = remember { mutableStateOf(session.count) }
             val dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
             val formattedDate = dateFormatter.format(session.dateTime)

app/src/main/java/com/example/myapplication/database/entities/composeui/OrderViewModel.kt

@@ -0,0 +1,28 @@
+package com.example.myapplication.database.entities.composeui
+
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.myapplication.database.AppDataContainer
+import com.example.myapplication.database.entities.model.SessionFromOrder
+import com.example.myapplication.database.entities.repository.OrderRepository
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
+
+class OrderViewModel(
+    savedStateHandle: SavedStateHandle,
+    private val orderRepository: OrderRepository
+) : ViewModel() {
+    private val orderUid: Int = checkNotNull(savedStateHandle["id"])
+    val orderUiState: StateFlow<OrderUiState> = orderRepository.getOrder(orderUid).map {
+        OrderUiState(it)
+    }.stateIn(
+        scope = viewModelScope,
+        started = SharingStarted.WhileSubscribed(stopTimeoutMillis = AppDataContainer.TIMEOUT),
+        initialValue = OrderUiState()
+    )
+}
+
+data class OrderUiState(val sessionList: List<SessionFromOrder> = listOf())

app/src/main/java/com/example/myapplication/database/entities/composeui/SessionList.kt

@@ -0,0 +1,141 @@
+package com.example.myapplication.database.entities.composeui
+
+import android.graphics.BitmapFactory
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+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.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.ShoppingCart
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import com.example.myapplication.R
+import com.example.myapplication.composeui.navigation.Screen
+import com.example.myapplication.database.entities.model.CinemaWithSessions
+import kotlinx.coroutines.launch
+import org.threeten.bp.format.DateTimeFormatter
+
+@Composable
+fun SessionList(
+    cinemaWithSessions: CinemaWithSessions,
+    navController: NavController,
+    viewModel: SessionListViewModel = viewModel(factory = AppViewModelProvider.Factory)
+) {
+    val coroutineScope = rememberCoroutineScope()
+    LazyColumn {
+        if (cinemaWithSessions.sessions.isEmpty()) {
+            item {
+                Text(
+                    text = stringResource(R.string.Session_empty_description),
+                    textAlign = TextAlign.Center,
+                    style = MaterialTheme.typography.titleLarge
+                )
+            }
+        } else {
+            items(cinemaWithSessions.sessions, key = { it.uid }) { session ->
+                val route = Screen.SessionEdit.route.replace(
+                    "{id}", session.uid.toString()
+                ).replace(
+                    "{cinemaId}", cinemaWithSessions.cinema.uid.toString()
+                )
+                val dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
+                val formattedDate = dateFormatter.format(session.dateTime)
+                Column {
+                    Text(
+                        text = formattedDate,
+                        color = MaterialTheme.colorScheme.onBackground,
+                    )
+                    Box(modifier = Modifier
+                        .padding(vertical = 7.dp)
+                        .clickable {
+                            navController.navigate(route)
+                        }
+                        .background(
+                            color = MaterialTheme.colorScheme.secondary,
+                            shape = RoundedCornerShape(16.dp)
+                        )) {
+                        Row(
+                            modifier = Modifier
+                                .fillMaxWidth()
+                                .padding(8.dp),
+                            verticalAlignment = Alignment.CenterVertically,
+                        ) {
+                            if (cinemaWithSessions.cinema.image != null) Image(
+                                bitmap = BitmapFactory.decodeByteArray(
+                                    cinemaWithSessions.cinema.image,
+                                    0,
+                                    cinemaWithSessions.cinema.image.size
+                                ).asImageBitmap(),
+                                contentDescription = null,
+                                modifier = Modifier
+                                    .size(90.dp)
+                                    .padding(4.dp)
+                            )
+
+                            Column(
+                                modifier = Modifier.weight(1f),
+                                verticalArrangement = Arrangement.spacedBy(4.dp)
+                            ) {
+                                Text(
+                                    text = "Цена: ${session.price}\n" + "Билетов: ${session.availableCount}",
+                                    color = MaterialTheme.colorScheme.onSecondary
+                                )
+                            }
+
+                            IconButton(
+                                onClick = {
+                                    coroutineScope.launch {
+                                        viewModel.addSessionInCart(sessionId = session.uid)
+                                    }
+                                },
+                            ) {
+                                Icon(
+                                    imageVector = Icons.Filled.ShoppingCart,
+                                    contentDescription = null,
+                                    modifier = Modifier.size(24.dp),
+                                    tint = MaterialTheme.colorScheme.onSecondary
+                                )
+                            }
+                            IconButton(
+                                onClick = {
+                                    coroutineScope.launch {
+                                        viewModel.deleteSession(session = session)
+                                    }
+                                },
+                            ) {
+                                Icon(
+                                    imageVector = Icons.Default.Delete,
+                                    contentDescription = null,
+                                    modifier = Modifier.size(24.dp),
+                                    tint = MaterialTheme.colorScheme.onSecondary
+                                )
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/composeui/SessionListViewModel.kt

@@ -0,0 +1,33 @@
+package com.example.myapplication.database.entities.composeui
+
+import androidx.lifecycle.ViewModel
+import com.example.myapplication.database.entities.model.Session
+import com.example.myapplication.database.entities.model.SessionFromCinema
+import com.example.myapplication.database.entities.model.UserSessionCrossRef
+import com.example.myapplication.database.entities.repository.SessionRepository
+import com.example.myapplication.database.entities.repository.UserSessionRepository
+
+class SessionListViewModel(
+    private val sessionRepository: SessionRepository,
+    private val userSessionRepository: UserSessionRepository
+) : ViewModel() {
+    suspend fun deleteSession(session: SessionFromCinema) {
+        sessionRepository.deleteSession(
+            Session(
+                uid = session.uid,
+                dateTime = session.dateTime,
+                price = session.price,
+                maxCount = 0,
+                cinemaId = 0
+            )
+        )
+    }
+
+    suspend fun addSessionInCart(sessionId: Int, count: Int = 1) {
+        try {
+            userSessionRepository.insertUserSession(UserSessionCrossRef(1, sessionId, count))
+        } catch (_: Exception) {
+
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/composeui/UserProfile.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.user.composeui
+package com.example.myapplication.database.entities.composeui
 
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
@@ -28,7 +28,6 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.text.input.PasswordVisualTransformation
 import androidx.compose.ui.unit.dp
-import androidx.navigation.NavController
 import com.example.myapplication.datastore.DataStoreManager
 import com.example.myapplication.datastore.SettingData
 import kotlinx.coroutines.launch

app/src/main/java/com/example/myapplication/database/entities/composeui/edit/CinemaEdit.kt

@@ -0,0 +1,127 @@
+package com.example.myapplication.database.entities.composeui.edit
+
+import android.content.res.Configuration
+import android.graphics.BitmapFactory
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.Button
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.VisualTransformation
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import com.example.myapplication.R
+import com.example.myapplication.database.entities.composeui.AppViewModelProvider
+import com.example.myapplication.ui.theme.PmudemoTheme
+import kotlinx.coroutines.launch
+
+@Composable
+fun CinemaEdit(
+    navController: NavController,
+    viewModel: CinemaEditViewModel = viewModel(factory = AppViewModelProvider.Factory),
+) {
+    val coroutineScope = rememberCoroutineScope()
+
+    CinemaEdit(
+        cinemaUiState = viewModel.cinemaUiState,
+        onClick = {
+            coroutineScope.launch {
+                viewModel.saveCinema()
+                navController.popBackStack()
+            }
+        },
+        onUpdate = viewModel::updateUiState,
+    )
+}
+
+@Composable
+private fun CinemaEdit(
+    cinemaUiState: CinemaUiState,
+    onClick: () -> Unit,
+    onUpdate: (CinemaDetails) -> Unit,
+) {
+    Column(
+        Modifier
+            .fillMaxWidth()
+            .padding(all = 10.dp)
+    ) {
+        OutlinedTextField(
+            modifier = Modifier.fillMaxWidth(),
+            value = cinemaUiState.cinemaDetails.name,
+            onValueChange = { onUpdate(cinemaUiState.cinemaDetails.copy(name = it)) },
+            label = { Text(stringResource(id = R.string.Cinema_name)) },
+            singleLine = true
+        )
+        OutlinedTextField(
+            modifier = Modifier.fillMaxWidth(),
+            value = cinemaUiState.cinemaDetails.description,
+            onValueChange = { onUpdate(cinemaUiState.cinemaDetails.copy(description = it)) },
+            label = { Text(stringResource(id = R.string.Cinema_description)) },
+            singleLine = true
+        )
+        OutlinedTextField(
+            modifier = Modifier.fillMaxWidth(),
+            value = cinemaUiState.cinemaDetails.year.toString(),
+            onValueChange = { newValue ->
+                val parsedYear = newValue.toLongOrNull() ?: 0L
+                onUpdate(cinemaUiState.cinemaDetails.copy(year = parsedYear))
+            },
+            label = { Text(stringResource(id = R.string.Cinema_year)) },
+            singleLine = true,
+            keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
+            visualTransformation = VisualTransformation.None // Отключает маскировку
+        )
+        if (cinemaUiState.cinemaDetails.image != null)
+            ImageUploader(
+                bitmap = BitmapFactory.decodeByteArray(
+                    cinemaUiState.cinemaDetails.image,
+                    0,
+                    cinemaUiState.cinemaDetails.image.size
+                ),
+                onResult = { byteArray: ByteArray? ->
+                    onUpdate(
+                        cinemaUiState.cinemaDetails.copy(
+                            image = byteArray
+                        )
+                    )
+                }
+            )
+        Button(
+            onClick = onClick,
+            enabled = cinemaUiState.isEntryValid,
+            shape = MaterialTheme.shapes.small,
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text(text = stringResource(R.string.Save_button))
+        }
+    }
+}
+
+
+@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
+@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
+@Composable
+fun CinemaEditPreview() {
+    PmudemoTheme {
+        Surface(
+            color = MaterialTheme.colorScheme.background
+        ) {
+            CinemaEdit(
+                cinemaUiState = CinemaUiState(),
+                onClick = {},
+                onUpdate = {},
+            )
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/composeui/edit/CinemaEditViewModel.kt

@@ -0,0 +1,101 @@
+package com.example.myapplication.database.entities.composeui.edit
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.myapplication.database.entities.model.Cinema
+import com.example.myapplication.database.entities.model.CinemaWithSessions
+import com.example.myapplication.database.entities.model.SessionFromCinema
+import com.example.myapplication.database.entities.repository.CinemaRepository
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+
+class CinemaEditViewModel(
+    savedStateHandle: SavedStateHandle,
+    private val cinemaRepository: CinemaRepository
+) : ViewModel() {
+    var cinemaUiState by mutableStateOf(CinemaUiState())
+        private set
+
+    private val cinemaUid: Int = checkNotNull(savedStateHandle["id"])
+
+    init {
+        viewModelScope.launch {
+            if (cinemaUid > 0) {
+                cinemaUiState = cinemaRepository.getCinema(cinemaUid)
+                    .filterNotNull()
+                    .first()
+                    .toUiState(true)
+            }
+        }
+    }
+
+    fun updateUiState(cinemaDetails: CinemaDetails) {
+        cinemaUiState = CinemaUiState(
+            cinemaDetails = cinemaDetails,
+            isEntryValid = validateInput(cinemaDetails)
+        )
+    }
+
+    suspend fun saveCinema() {
+        if (validateInput()) {
+            if (cinemaUid > 0) {
+                cinemaRepository.updateCinema(cinemaUiState.cinemaDetails.toCinema(cinemaUid))
+            } else {
+                cinemaRepository.insertCinema(cinemaUiState.cinemaDetails.toCinema())
+            }
+        }
+    }
+
+    private fun validateInput(uiState: CinemaDetails = cinemaUiState.cinemaDetails): Boolean {
+        return with(uiState) {
+            name.isNotBlank()
+                    && description.isNotBlank()
+                    && year >= 1900
+                    && year <= 2100
+        }
+    }
+}
+
+data class CinemaUiState(
+    val cinemaDetails: CinemaDetails = CinemaDetails(),
+    val isEntryValid: Boolean = false
+)
+
+data class CinemaDetails(
+    val name: String = "",
+    val description: String = "",
+    val image: ByteArray? = byteArrayOf(),
+    val year: Long = 1900,
+    val sessions: List<SessionFromCinema> = emptyList()
+)
+
+fun CinemaDetails.toCinema(uid: Int = 0): Cinema = Cinema(
+    uid = uid,
+    name = name,
+    description = description,
+    image = image,
+    year = year
+)
+
+fun CinemaWithSessions.toDetails(): CinemaDetails {
+    val cinema = this.cinema
+    val sessions = this.sessions
+
+    return CinemaDetails(
+        name = cinema.name,
+        description = cinema.description,
+        image = cinema.image,
+        year = cinema.year,
+        sessions = sessions
+    )
+}
+
+fun CinemaWithSessions.toUiState(isEntryValid: Boolean = false): CinemaUiState = CinemaUiState(
+    cinemaDetails = this.toDetails(),
+    isEntryValid = isEntryValid
+)

app/src/main/java/com/example/myapplication/database/entities/composeui/edit/ImageUploader.kt

@@ -0,0 +1,121 @@
+package com.example.myapplication.database.entities.composeui.edit
+
+import android.graphics.Bitmap
+import android.graphics.BitmapFactory
+import android.net.Uri
+import androidx.activity.compose.rememberLauncherForActivityResult
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.asImageBitmap
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.unit.dp
+import com.example.myapplication.R
+import java.io.ByteArrayOutputStream
+
+@Composable
+fun ImageUploader(
+    bitmap: Bitmap?,
+    onResult: (ByteArray) -> Unit
+) {
+    val context = LocalContext.current
+    val title: String = if (bitmap == null) {
+        stringResource(R.string.not_uploaded)
+    } else {
+        stringResource(R.string.size, bitmap.width, bitmap.height)
+    }
+
+    val launcher = rememberLauncherForActivityResult(
+        contract = ActivityResultContracts.GetContent(),
+        onResult = { uri: Uri? ->
+            uri?.let {
+                val inputStream = context.contentResolver.openInputStream(uri)
+                val newBitmap: Bitmap = BitmapFactory.decodeStream(inputStream)
+                val scaledBitmap = resizeBitmapWithAspectRatio(newBitmap, 200)
+                val stream = ByteArrayOutputStream()
+                scaledBitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream)
+                onResult(stream.toByteArray())
+            }
+        }
+    )
+
+    Column(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(16.dp)
+    ) {
+        Box(
+            contentAlignment = Alignment.Center,
+            modifier = Modifier
+                .background(
+                    color = MaterialTheme.colorScheme.surface,
+                    shape = RoundedCornerShape(10.dp)
+                )
+                .aspectRatio(1f)
+                .border(
+                    width = 1.dp,
+                    color = MaterialTheme.colorScheme.primary,
+                    shape = RoundedCornerShape(10.dp)
+                )
+                .clickable { launcher.launch("image/*") }
+                .padding(16.dp)
+        ) {
+            if (bitmap != null) {
+                Image(
+                    bitmap = bitmap.asImageBitmap(),
+                    contentDescription = null,
+                    contentScale = ContentScale.Crop,
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .clip(shape = RoundedCornerShape(10.dp))
+                )
+            } else {
+                Image(
+                    painter = painterResource(id = R.drawable.photo),
+                    contentDescription = null,
+                    contentScale = ContentScale.Crop,
+                    modifier = Modifier
+                        .fillMaxSize()
+                        .clip(shape = RoundedCornerShape(10.dp))
+                )
+            }
+        }
+        Spacer(modifier = Modifier.height(8.dp))
+        Text(
+            text = title,
+            color = MaterialTheme.colorScheme.onBackground
+        )
+    }
+}
+
+fun resizeBitmapWithAspectRatio(bitmap: Bitmap, maxHeight: Int): Bitmap {
+    if (bitmap.height <= maxHeight) {
+        return bitmap
+    }
+
+    val aspectRatio = bitmap.width.toFloat() / bitmap.height
+    val newWidth = (maxHeight * aspectRatio).toInt()
+
+    return Bitmap.createScaledBitmap(bitmap, newWidth, maxHeight, true)
+}
+

app/src/main/java/com/example/myapplication/database/entities/composeui/edit/SessionEdit.kt

@@ -0,0 +1,150 @@
+package com.example.myapplication.database.entities.composeui.edit
+
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material3.Button
+import androidx.compose.material3.DatePicker
+import androidx.compose.material3.DisplayMode
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.material3.TimePicker
+import androidx.compose.material3.rememberDatePickerState
+import androidx.compose.material3.rememberTimePickerState
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavController
+import com.example.myapplication.R
+import com.example.myapplication.database.entities.composeui.AppViewModelProvider
+import kotlinx.coroutines.launch
+import org.threeten.bp.Instant
+import org.threeten.bp.LocalDateTime
+import org.threeten.bp.LocalTime
+import org.threeten.bp.ZoneId
+import org.threeten.bp.ZoneOffset
+
+
+@Composable
+fun SessionEdit(
+    navController: NavController,
+    viewModel: SessionEditViewModel = viewModel(factory = AppViewModelProvider.Factory),
+) {
+    val coroutineScope = rememberCoroutineScope()
+    SessionEdit(
+        sessionUiState = viewModel.sessionUiState,
+        onClick = {
+            coroutineScope.launch {
+                viewModel.saveSession()
+                navController.popBackStack()
+            }
+        },
+        onUpdate = viewModel::updateUiState
+    )
+}
+
+fun Long.toLocalDate(): org.threeten.bp.LocalDate {
+    val instant = Instant.ofEpochMilli(this)
+    return instant.atZone(ZoneId.systemDefault()).toLocalDate()
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun SessionEdit(
+    sessionUiState: SessionUiState,
+    onClick: () -> Unit,
+    onUpdate: (SessionDetails) -> Unit,
+) {
+    LazyColumn(
+        Modifier
+            .fillMaxWidth()
+            .padding(all = 10.dp)
+    ) {
+        item {
+            if (sessionUiState.sessionDetails.dateTime != LocalDateTime.MIN) {
+                val selectedDateMillis =
+                    sessionUiState.sessionDetails.dateTime.toInstant(ZoneOffset.UTC).toEpochMilli()
+
+                val dateState = rememberDatePickerState(
+                    initialDisplayMode = DisplayMode.Input,
+                    initialSelectedDateMillis = selectedDateMillis
+                )
+                val timeState = rememberTimePickerState(
+                    sessionUiState.sessionDetails.dateTime.hour,
+                    sessionUiState.sessionDetails.dateTime.minute
+                )
+                DatePicker(
+                    state = dateState,
+                    modifier = Modifier.padding(16.dp)
+                )
+                Box(
+                    modifier = Modifier.fillMaxWidth(),
+                    contentAlignment = Alignment.Center
+                ) {
+                    TimePicker(state = timeState)
+                }
+                val selectedDate = dateState.selectedDateMillis?.toLocalDate()
+                val selectedTime = LocalTime.of(timeState.hour, timeState.minute)
+                if (selectedDate != null) {
+                    val resultDateTime = LocalDateTime.of(selectedDate, selectedTime)
+                    onUpdate(sessionUiState.sessionDetails.copy(dateTime = resultDateTime))
+                }
+            } else {
+                val dateState = rememberDatePickerState(initialDisplayMode = DisplayMode.Input)
+                val timeState = rememberTimePickerState()
+                DatePicker(
+                    state = dateState,
+                    modifier = Modifier.padding(16.dp)
+                )
+                Box(
+                    modifier = Modifier.fillMaxWidth(),
+                    contentAlignment = Alignment.Center
+                ) {
+                    TimePicker(state = timeState)
+                }
+                val selectedDate = dateState.selectedDateMillis?.toLocalDate()
+                val selectedTime = LocalTime.of(timeState.hour, timeState.minute)
+                if (selectedDate != null) {
+                    val resultDateTime = LocalDateTime.of(selectedDate, selectedTime)
+                    onUpdate(sessionUiState.sessionDetails.copy(dateTime = resultDateTime))
+                }
+            }
+
+            OutlinedTextField(
+                modifier = Modifier.fillMaxWidth(),
+                value = sessionUiState.sessionDetails.price,
+                label = { Text(text = "Цена") },
+                onValueChange = {
+                    onUpdate(sessionUiState.sessionDetails.copy(price = it))
+                },
+                keyboardOptions = KeyboardOptions.Default.copy(keyboardType = KeyboardType.Number),
+            )
+            OutlinedTextField(
+                modifier = Modifier.fillMaxWidth(),
+                value = sessionUiState.sessionDetails.maxCount.toString(),
+                onValueChange = { newValue ->
+                    val parsedMaxCount = newValue.toIntOrNull() ?: 0 // Преобразование в Int
+                    onUpdate(sessionUiState.sessionDetails.copy(maxCount = parsedMaxCount))
+                },
+                label = { Text(text = "Количество") },
+                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number)
+            )
+            Button(
+                onClick = onClick,
+                enabled = sessionUiState.isEntryValid,
+                shape = MaterialTheme.shapes.small,
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text(text = stringResource(R.string.Save_button))
+            }
+        }
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/composeui/edit/SessionEditViewModel.kt

@@ -0,0 +1,110 @@
+package com.example.myapplication.database.entities.composeui.edit
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.SavedStateHandle
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.myapplication.database.entities.model.Session
+import com.example.myapplication.database.entities.repository.SessionRepository
+import kotlinx.coroutines.flow.filterNotNull
+import kotlinx.coroutines.flow.first
+import kotlinx.coroutines.launch
+import org.threeten.bp.LocalDateTime
+
+class SessionEditViewModel(
+    savedStateHandle: SavedStateHandle,
+    private val sessionRepository: SessionRepository
+) : ViewModel() {
+    var sessionUiState by mutableStateOf(SessionUiState())
+        private set
+
+    private val sessionUid: Int = checkNotNull(savedStateHandle["id"])
+    private val cinemaUid: Int = checkNotNull(savedStateHandle["cinemaId"])
+
+    init {
+        viewModelScope.launch {
+            if (sessionUid > 0) {
+                sessionUiState = sessionRepository.getSession(sessionUid)
+                    .filterNotNull()
+                    .first()
+                    .toUiState(true)
+            }
+        }
+    }
+
+    fun updateUiState(sessionDetails: SessionDetails) {
+        sessionUiState = SessionUiState(
+            sessionDetails = sessionDetails,
+            isEntryValid = validateInput(sessionDetails)
+        )
+    }
+
+    suspend fun saveSession() {
+        if (validateInput()) {
+            if (cinemaUid > 0)
+                if (sessionUid > 0) {
+                    sessionRepository.updateSession(
+                        sessionUiState.sessionDetails
+                            .toSession(uid = sessionUid, cinemaUid = cinemaUid)
+                    )
+                } else {
+                    sessionRepository.insertSession(
+                        sessionUiState.sessionDetails.toSession(
+                            cinemaUid = cinemaUid
+                        )
+                    )
+                }
+        }
+    }
+
+    private fun validateInput(uiState: SessionDetails = sessionUiState.sessionDetails): Boolean {
+        return with(uiState) {
+            dateTime != LocalDateTime.MIN
+                    && isValidDouble(price)
+                    && maxCount > 0
+                    && cinemaUid > 0
+        }
+    }
+}
+
+val regex = """^-?\d+(.\d+)?+(,\d+)?$""".toRegex()
+
+fun isValidDouble(input: String): Boolean {
+    return regex.matches(input)
+}
+
+data class SessionUiState(
+    val sessionDetails: SessionDetails = SessionDetails(),
+    val isEntryValid: Boolean = false
+)
+
+data class SessionDetails(
+    val uid: Int = 0,
+    val dateTime: LocalDateTime = LocalDateTime.MIN,
+    val price: String = "0",
+    val maxCount: Int = 0,
+    val cinemaId: Int = 0
+)
+
+fun SessionDetails.toSession(uid: Int = 0, cinemaUid: Int = 0): Session = Session(
+    uid = uid,
+    dateTime = dateTime,
+    price = price.toDoubleOrNull() ?: 0.0,
+    maxCount = maxCount,
+    cinemaId = cinemaUid
+)
+
+fun Session.toDetails(): SessionDetails = SessionDetails(
+    uid = uid,
+    dateTime = dateTime,
+    price = price.toString(),
+    maxCount = maxCount,
+    cinemaId = cinemaId
+)
+
+fun Session.toUiState(isEntryValid: Boolean = false): SessionUiState = SessionUiState(
+    sessionDetails = this.toDetails(),
+    isEntryValid = isEntryValid
+)

app/src/main/java/com/example/myapplication/database/entities/dao/CinemaDao.kt

@@ -0,0 +1,39 @@
+package com.example.myapplication.database.entities.dao
+
+import androidx.paging.PagingSource
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Update
+import com.example.myapplication.database.entities.model.Cinema
+import com.example.myapplication.database.entities.model.SessionFromCinema
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface CinemaDao {
+    @Query("select * from cinemas order by name")
+    fun getAll(): Flow<List<Cinema>>
+
+    @Query("select * from cinemas order by name")
+    fun getAllCinemasPaged(): PagingSource<Int, Cinema>
+
+    @Query(
+        "SELECT c.*, s.uid as session_uid, s.date_time, s.price, s.max_count-IFNULL(SUM(os.count), 0) as available_count " +
+                "FROM cinemas AS c " +
+                "LEFT JOIN sessions AS s ON s.cinema_id = c.uid " +
+                "LEFT JOIN orders_sessions AS os ON os.session_id = s.uid " +
+                "WHERE c.uid = :cinemaId " +
+                "GROUP BY session_uid"
+    )
+    fun getByUid(cinemaId: Int?): Flow<Map<Cinema, List<SessionFromCinema>>>
+
+    @Insert
+    suspend fun insert(cinema: Cinema)
+
+    @Update
+    suspend fun update(cinema: Cinema)
+
+    @Delete
+    suspend fun delete(cinema: Cinema)
+}

app/src/main/java/com/example/myapplication/database/entities/dao/OrderDao.kt

@@ -0,0 +1,34 @@
+package com.example.myapplication.database.entities.dao
+
+import androidx.room.Dao
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Query
+import androidx.room.Update
+import com.example.myapplication.database.entities.model.Order
+import com.example.myapplication.database.entities.model.SessionFromOrder
+import kotlinx.coroutines.flow.Flow
+
+@Dao
+interface OrderDao {
+    @Query("select * from orders where user_id = :userId")
+    fun getAll(userId: Int?): Flow<List<Order>>
+
+    @Query(
+        "SELECT o.*, s.*, os.count, os.frozen_price " +
+                "FROM orders AS o " +
+                "JOIN orders_sessions AS os ON os.order_id = o.uid " +
+                "JOIN sessions AS s ON s.uid = os.session_id " +
+                "WHERE o.uid = :orderId"
+    )
+    fun getByUid(orderId: Int?): Flow<List<SessionFromOrder>>
+
+    @Insert
+    suspend fun insert(order: Order): Long
+
+    @Update
+    suspend fun update(order: Order)
+
+    @Delete
+    suspend fun delete(order: Order)
+}

app/src/main/java/com/example/myapplication/database/entities/dao/OrderSessionCrossRefDao.kt

@@ -1,11 +1,10 @@
-package com.example.myapplication.entities.dao
+package com.example.myapplication.database.entities.dao
 
 import androidx.room.Dao
 import androidx.room.Delete
 import androidx.room.Insert
-import androidx.room.Query
 import androidx.room.Update
-import com.example.myapplication.entities.model.OrderSessionCrossRef
+import com.example.myapplication.database.entities.model.OrderSessionCrossRef
 
 @Dao
 interface OrderSessionCrossRefDao {

app/src/main/java/com/example/myapplication/database/entities/dao/SessionDao.kt

@@ -1,13 +1,18 @@
-package com.example.myapplication.entities.dao
+package com.example.myapplication.database.entities.dao
 
 import androidx.room.Dao
 import androidx.room.Delete
 import androidx.room.Insert
+import androidx.room.Query
 import androidx.room.Update
-import com.example.myapplication.entities.model.Session
+import com.example.myapplication.database.entities.model.Session
+import kotlinx.coroutines.flow.Flow
 
 @Dao
 interface SessionDao {
+    @Query("select * from sessions where sessions.uid = :uid")
+    fun getByUid(uid: Int): Flow<Session>
+
     @Insert
     suspend fun insert(session: Session)
 

app/src/main/java/com/example/myapplication/database/entities/dao/UserDao.kt

@@ -1,12 +1,12 @@
-package com.example.myapplication.entities.dao
+package com.example.myapplication.database.entities.dao
 
 import androidx.room.Dao
 import androidx.room.Delete
 import androidx.room.Insert
 import androidx.room.Query
 import androidx.room.Update
-import com.example.myapplication.entities.model.SessionFromCart
+import com.example.myapplication.database.entities.model.SessionFromCart
-import com.example.myapplication.entities.model.User
+import com.example.myapplication.database.entities.model.User
 import kotlinx.coroutines.flow.Flow
 
 @Dao
@@ -15,12 +15,12 @@ interface UserDao {
     fun getAll(): Flow<List<User>>
 
     @Query(
-        "SELECT sessions.*, sessions.max_count-sum(orders_sessions.count) as available_count, " +
+        "SELECT sessions.*, sessions.max_count-IFNULL(SUM(orders_sessions.count), 0) as available_count, " +
                 "users_sessions.count FROM sessions " +
                 "join users_sessions on sessions.uid = users_sessions.session_id " +
-                "join orders_sessions on sessions.uid = orders_sessions.session_id " +
+                "left join orders_sessions on sessions.uid = orders_sessions.session_id " +
                 "where users_sessions.user_id = :userId " +
-                "GROUP BY orders_sessions.session_id "
+                "GROUP BY users_sessions.session_id "
     )
     fun getCartByUid(userId: Int): Flow<List<SessionFromCart>>
 

app/src/main/java/com/example/myapplication/database/entities/dao/UserSessionCrossRefDao.kt

@@ -1,13 +1,11 @@
-package com.example.myapplication.entities.dao
+package com.example.myapplication.database.entities.dao
 
 import androidx.room.Dao
 import androidx.room.Delete
 import androidx.room.Insert
 import androidx.room.Query
 import androidx.room.Update
-import com.example.myapplication.entities.model.SessionFromCart
+import com.example.myapplication.database.entities.model.UserSessionCrossRef
-import com.example.myapplication.entities.model.UserSessionCrossRef
-import kotlinx.coroutines.flow.Flow
 
 @Dao
 interface UserSessionCrossRefDao {
@@ -19,4 +17,7 @@ interface UserSessionCrossRefDao {
 
     @Delete
     suspend fun delete(userSessionCrossRef: UserSessionCrossRef)
+
+    @Query("DELETE FROM users_sessions where users_sessions.user_id = :userId")
+    suspend fun deleteByUserUid(userId: Int)
 }

app/src/main/java/com/example/myapplication/database/entities/model/Cinema.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.ColumnInfo
 import androidx.room.Entity
@@ -8,7 +8,7 @@ import androidx.room.PrimaryKey
 @Entity(tableName = "cinemas")
 data class Cinema(
     @PrimaryKey(autoGenerate = true)
-    val uid: Int?,
+    val uid: Int = 0,
     val name: String,
     val description: String,
     @ColumnInfo(typeAffinity = ColumnInfo.BLOB)
@@ -21,18 +21,37 @@ data class Cinema(
         description: String,
         image: ByteArray?,
         year: Long
-    ) : this(null, name, description, image, year)
+    ) : this(0, name, description, image, year)
+
+    companion object {
+        fun getCinema(index: Int = 0): Cinema {
+            return Cinema(
+                index,
+                "name",
+                "desc",
+                byteArrayOf(),
+                0,
+            )
+        }
+    }
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
         if (javaClass != other?.javaClass) return false
         other as Cinema
         if (uid != other.uid) return false
+        if (name != other.name) return false
+        if (description != other.description) return false
+        if (year != other.year) return false
         return true
     }
 
     override fun hashCode(): Int {
-        return uid ?: -1
+        var result = uid
+        result = 31 * result + name.hashCode()
+        result = 31 * result + description.hashCode()
+        result = 31 * result + year.hashCode()
+        return result
     }
 }
 

app/src/main/java/com/example/myapplication/database/entities/model/CinemaWithSessions.kt

@@ -0,0 +1,24 @@
+package com.example.myapplication.database.entities.model
+
+data class CinemaWithSessions(
+    val cinema: Cinema,
+    val sessions: List<SessionFromCinema>
+) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as CinemaWithSessions
+
+        if (cinema != other.cinema) return false
+        if (sessions != other.sessions) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = cinema.hashCode()
+        result = 31 * result + sessions.hashCode()
+        return result
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/model/LocalDateTimeConverter.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.TypeConverter
 import org.threeten.bp.LocalDateTime

app/src/main/java/com/example/myapplication/database/entities/model/Order.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.ColumnInfo
 import androidx.room.Entity

app/src/main/java/com/example/myapplication/database/entities/model/OrderSessionCrossRef.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.ColumnInfo
 import androidx.room.Entity

app/src/main/java/com/example/myapplication/database/entities/model/Session.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.ColumnInfo
 import androidx.room.Entity
@@ -13,21 +13,21 @@ import org.threeten.bp.LocalDateTime
             entity = Cinema::class,
             parentColumns = ["uid"],
             childColumns = ["cinema_id"],
-            onDelete = ForeignKey.RESTRICT,
+            onDelete = ForeignKey.CASCADE,
             onUpdate = ForeignKey.RESTRICT
         )
     ]
 )
 data class Session(
     @PrimaryKey(autoGenerate = true)
-    val uid: Int?,
+    val uid: Int = 0,
     @ColumnInfo(name = "date_time")
     val dateTime: LocalDateTime,
     val price: Double,
     @ColumnInfo(name = "max_count")
     val maxCount: Int,
     @ColumnInfo(name = "cinema_id", index = true)
-    val cinemaId: Int?,
+    val cinemaId: Int = 0,
 ) {
     @Ignore
     constructor(
@@ -35,18 +35,39 @@ data class Session(
         price: Double,
         maxCount: Int,
         cinema: Cinema,
-    ) : this(null, dateTime, price, maxCount, cinema.uid)
+    ) : this(0, dateTime, price, maxCount, cinema.uid)
+
+    companion object {
+        fun getSession(index: Int = 0): Session {
+            return Session(
+                index,
+                LocalDateTime.MIN,
+                0.0,
+                0,
+                0
+            )
+        }
+    }
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
         if (javaClass != other?.javaClass) return false
         other as Session
         if (uid != other.uid) return false
+        if (dateTime != other.dateTime) return false
+        if (price != other.price) return false
+        if (maxCount != other.maxCount) return false
+        if (cinemaId != other.cinemaId) return false
         return true
     }
 
     override fun hashCode(): Int {
-        return uid ?: -1
+        var result = uid
+        result = 31 * result + dateTime.hashCode()
+        result = 31 * result + price.hashCode()
+        result = 31 * result + maxCount.hashCode()
+        result = 31 * result + cinemaId.hashCode()
+        return result
     }
 }
 

app/src/main/java/com/example/myapplication/database/entities/model/SessionFromCart.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.ColumnInfo
 import androidx.room.Relation
@@ -6,7 +6,7 @@ import org.threeten.bp.LocalDateTime
 
 data class SessionFromCart(
     @ColumnInfo(name = "uid")
-    val uid: Int?,
+    val uid: Int = 0,
     @ColumnInfo(name = "date_time")
     val dateTime: LocalDateTime,
     val price: Double,
@@ -14,10 +14,10 @@ data class SessionFromCart(
     val availableCount: Int,
     val count: Int,
     @ColumnInfo(name = "cinema_id")
-    val cinemaId: Int?,
+    val cinemaId: Int = 0,
     @Relation(
         parentColumn = "cinema_id",
         entity = Cinema::class,
         entityColumn = "uid"
-    )    val cinema: Cinema
+    ) val cinema: Cinema
 )

app/src/main/java/com/example/myapplication/database/entities/model/SessionFromCinema.kt

@@ -0,0 +1,35 @@
+package com.example.myapplication.database.entities.model
+
+import androidx.room.ColumnInfo
+import org.threeten.bp.LocalDateTime
+import org.threeten.bp.format.DateTimeFormatter
+
+data class SessionFromCinema(
+    @ColumnInfo(name = "session_uid")
+    val uid: Int,
+    @ColumnInfo(name = "date_time")
+    val dateTime: LocalDateTime,
+    val price: Double,
+    @ColumnInfo(name = "available_count")
+    val availableCount: Int,
+) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+        other as SessionFromCinema
+        if (uid != other.uid) return false
+        val dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
+        if (dateFormatter.format(dateTime) != dateFormatter.format(other.dateTime)) return false
+        if (price != other.price) return false
+        if (availableCount != other.availableCount) return false
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = uid
+        result = 31 * result + dateTime.hashCode()
+        result = 31 * result + price.hashCode()
+        result = 31 * result + availableCount.hashCode()
+        return result
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/model/SessionFromOrder.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.ColumnInfo
 import androidx.room.Relation

app/src/main/java/com/example/myapplication/database/entities/model/User.kt

@@ -1,4 +1,4 @@
-package com.example.myapplication.entities.model
+package com.example.myapplication.database.entities.model
 
 import androidx.room.Entity
 import androidx.room.PrimaryKey
@@ -6,7 +6,7 @@ import androidx.room.PrimaryKey
 @Entity(tableName = "users")
 data class User(
     @PrimaryKey(autoGenerate = true)
-    val uid: Int?,
+    val uid: Int = 0,
     val login: String,
     val password: String
 ) {

app/src/main/java/com/example/myapplication/database/entities/model/UserSessionCrossRef.kt

@@ -0,0 +1,36 @@
+package com.example.myapplication.database.entities.model
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import java.util.Objects.hash
+
+@Entity(
+    tableName = "users_sessions",
+    primaryKeys = ["user_id", "session_id"]
+)
+data class UserSessionCrossRef(
+    @ColumnInfo(name = "user_id", index = true)
+    val userId: Int,
+    @ColumnInfo(name = "session_id", index = true)
+    val sessionId: Int,
+    @ColumnInfo(name = "count")
+    val count: Int,
+) {
+    override fun equals(other: Any?): Boolean {
+        if (this === other) {
+            return true
+        }
+        if (javaClass != other?.javaClass) {
+            return false
+        }
+        other as UserSessionCrossRef
+        if (userId == other.userId && sessionId == other.sessionId) {
+            return true
+        }
+        return false
+    }
+
+    override fun hashCode(): Int {
+        return hash(userId, sessionId)
+    }
+}

app/src/main/java/com/example/myapplication/database/entities/repository/CinemaRepository.kt

@@ -0,0 +1,15 @@
+package com.example.myapplication.database.entities.repository
+
+import androidx.paging.PagingSource
+import com.example.myapplication.database.entities.model.Cinema
+import com.example.myapplication.database.entities.model.CinemaWithSessions
+import kotlinx.coroutines.flow.Flow
+
+interface CinemaRepository {
+    fun getAllCinemas(): Flow<List<Cinema>>
+    fun getAllCinemasPaged(): PagingSource<Int, Cinema>
+    fun getCinema(uid: Int): Flow<CinemaWithSessions>
+    suspend fun insertCinema(cinema: Cinema)
+    suspend fun updateCinema(cinema: Cinema)
+    suspend fun deleteCinema(cinema: Cinema)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OfflineCinemaRepository.kt

@@ -0,0 +1,33 @@
+package com.example.myapplication.database.entities.repository
+
+import androidx.paging.PagingSource
+import com.example.myapplication.database.entities.dao.CinemaDao
+import com.example.myapplication.database.entities.model.Cinema
+import com.example.myapplication.database.entities.model.CinemaWithSessions
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.flow
+
+class OfflineCinemaRepository(private val cinemaDao: CinemaDao) : CinemaRepository {
+    override fun getAllCinemas(): Flow<List<Cinema>> = cinemaDao.getAll()
+
+    override fun getAllCinemasPaged(): PagingSource<Int, Cinema> = cinemaDao.getAllCinemasPaged()
+
+    override fun getCinema(uid: Int): Flow<CinemaWithSessions> {
+        return flow {
+            cinemaDao.getByUid(uid).collect {
+                emit(it.firstNotNullOf {
+                    CinemaWithSessions(
+                        cinema = it.key,
+                        sessions = it.value
+                    )
+                })
+            }
+        }
+    }
+
+    override suspend fun insertCinema(cinema: Cinema) = cinemaDao.insert(cinema)
+
+    override suspend fun updateCinema(cinema: Cinema) = cinemaDao.update(cinema)
+
+    override suspend fun deleteCinema(cinema: Cinema) = cinemaDao.delete(cinema)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OfflineOrderRepository.kt

@@ -0,0 +1,18 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.dao.OrderDao
+import com.example.myapplication.database.entities.model.Order
+import com.example.myapplication.database.entities.model.SessionFromOrder
+import kotlinx.coroutines.flow.Flow
+
+class OfflineOrderRepository(private val orderDao: OrderDao) : OrderRepository {
+    override fun getAllOrders(userId: Int?): Flow<List<Order>> = orderDao.getAll(userId)
+
+    override fun getOrder(orderId: Int?): Flow<List<SessionFromOrder>> = orderDao.getByUid(orderId)
+
+    override suspend fun insertOrder(order: Order): Long = orderDao.insert(order)
+
+    override suspend fun updateOrder(order: Order) = orderDao.update(order)
+
+    override suspend fun deleteOrder(order: Order) = orderDao.delete(order)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OfflineOrderSessionRepository.kt

@@ -0,0 +1,16 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.dao.OrderSessionCrossRefDao
+import com.example.myapplication.database.entities.model.OrderSessionCrossRef
+
+class OfflineOrderSessionRepository(private val orderSessionDao: OrderSessionCrossRefDao) :
+    OrderSessionRepository {
+    override suspend fun insertOrderSession(orderSessionCrossRef: OrderSessionCrossRef) =
+        orderSessionDao.insert(orderSessionCrossRef)
+
+    override suspend fun updateOrderSession(orderSessionCrossRef: OrderSessionCrossRef) =
+        orderSessionDao.update(orderSessionCrossRef)
+
+    override suspend fun deleteOrderSession(orderSessionCrossRef: OrderSessionCrossRef) =
+        orderSessionDao.delete(orderSessionCrossRef)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OfflineSessionRepository.kt

@@ -0,0 +1,15 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.dao.SessionDao
+import com.example.myapplication.database.entities.model.Session
+import kotlinx.coroutines.flow.Flow
+
+class OfflineSessionRepository(private val sessionDao: SessionDao) : SessionRepository {
+    override fun getSession(uid: Int): Flow<Session?> = sessionDao.getByUid(uid)
+
+    override suspend fun insertSession(session: Session) = sessionDao.insert(session)
+
+    override suspend fun updateSession(session: Session) = sessionDao.update(session)
+
+    override suspend fun deleteSession(session: Session) = sessionDao.delete(session)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OfflineUserRepository.kt

@@ -0,0 +1,19 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.dao.UserDao
+import com.example.myapplication.database.entities.model.SessionFromCart
+import com.example.myapplication.database.entities.model.User
+import kotlinx.coroutines.flow.Flow
+
+class OfflineUserRepository(private val userDao: UserDao) : UserRepository {
+    override fun getAllUsers(): Flow<List<User>> = userDao.getAll()
+
+    override fun getCartByUser(userId: Int): Flow<List<SessionFromCart>> =
+        userDao.getCartByUid(userId)
+
+    override suspend fun insertUser(user: User) = userDao.insert(user)
+
+    override suspend fun updateUser(user: User) = userDao.update(user)
+
+    override suspend fun deleteUser(user: User) = userDao.delete(user)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OfflineUserSessionRepository.kt

@@ -0,0 +1,18 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.dao.UserSessionCrossRefDao
+import com.example.myapplication.database.entities.model.UserSessionCrossRef
+
+class OfflineUserSessionRepository(private val userSessionDao: UserSessionCrossRefDao) :
+    UserSessionRepository {
+    override suspend fun insertUserSession(userSessionCrossRef: UserSessionCrossRef) =
+        userSessionDao.insert(userSessionCrossRef)
+
+    override suspend fun updateUserSession(userSessionCrossRef: UserSessionCrossRef) =
+        userSessionDao.update(userSessionCrossRef)
+
+    override suspend fun deleteUserSession(userSessionCrossRef: UserSessionCrossRef) =
+        userSessionDao.delete(userSessionCrossRef)
+
+    override suspend fun deleteUserSessions(userId: Int) = userSessionDao.deleteByUserUid(userId)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OrderRepository.kt

@@ -0,0 +1,13 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.model.Order
+import com.example.myapplication.database.entities.model.SessionFromOrder
+import kotlinx.coroutines.flow.Flow
+
+interface OrderRepository {
+    fun getAllOrders(userId: Int?): Flow<List<Order>>
+    fun getOrder(orderId: Int?): Flow<List<SessionFromOrder>>
+    suspend fun insertOrder(order: Order): Long
+    suspend fun updateOrder(order: Order)
+    suspend fun deleteOrder(order: Order)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/OrderSessionRepository.kt

@@ -0,0 +1,9 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.model.OrderSessionCrossRef
+
+interface OrderSessionRepository {
+    suspend fun insertOrderSession(orderSessionCrossRef: OrderSessionCrossRef)
+    suspend fun updateOrderSession(orderSessionCrossRef: OrderSessionCrossRef)
+    suspend fun deleteOrderSession(orderSessionCrossRef: OrderSessionCrossRef)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/SessionRepository.kt

@@ -0,0 +1,11 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.model.Session
+import kotlinx.coroutines.flow.Flow
+
+interface SessionRepository {
+    fun getSession(uid: Int): Flow<Session?>
+    suspend fun insertSession(session: Session)
+    suspend fun updateSession(session: Session)
+    suspend fun deleteSession(session: Session)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/UserRepository.kt

@@ -0,0 +1,13 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.model.SessionFromCart
+import com.example.myapplication.database.entities.model.User
+import kotlinx.coroutines.flow.Flow
+
+interface UserRepository {
+    fun getAllUsers(): Flow<List<User>>
+    fun getCartByUser(userId: Int): Flow<List<SessionFromCart>>
+    suspend fun insertUser(user: User)
+    suspend fun updateUser(user: User)
+    suspend fun deleteUser(user: User)
+}

app/src/main/java/com/example/myapplication/database/entities/repository/UserSessionRepository.kt

@@ -0,0 +1,10 @@
+package com.example.myapplication.database.entities.repository
+
+import com.example.myapplication.database.entities.model.UserSessionCrossRef
+
+interface UserSessionRepository {
+    suspend fun insertUserSession(userSessionCrossRef: UserSessionCrossRef)
+    suspend fun updateUserSession(userSessionCrossRef: UserSessionCrossRef)
+    suspend fun deleteUserSession(userSessionCrossRef: UserSessionCrossRef)
+    suspend fun deleteUserSessions(userId: Int)
+}

app/src/main/java/com/example/myapplication/entities/composeui/CinemaList.kt

@@ -1,109 +0,0 @@
-package com.example.myapplication.entities.composeui
-
-import android.content.res.Configuration
-import android.graphics.BitmapFactory
-import androidx.compose.foundation.Image
-import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Box
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.lazy.items
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.mutableStateListOf
-import androidx.compose.runtime.remember
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.asImageBitmap
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.tooling.preview.Preview
-import androidx.compose.ui.unit.dp
-import androidx.navigation.NavController
-import com.example.myapplication.composeui.navigation.Screen
-import com.example.myapplication.database.AppDatabase
-import com.example.myapplication.entities.model.Cinema
-import com.example.myapplication.ui.theme.PmudemoTheme
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
-
-@Composable
-fun CinemaList(navController: NavController?) {
-    val context = LocalContext.current
-    val cinemas = remember { mutableStateListOf<Cinema>() }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            AppDatabase.getInstance(context).cinemaDao().getAll().collect { data ->
-                cinemas.clear()
-                cinemas.addAll(data)
-            }
-        }
-    }
-    LazyColumn(
-        modifier = Modifier
-            .fillMaxSize()
-            .padding(all = 10.dp)
-    ) {
-        items(cinemas) { cinema ->
-            val cinemaId = Screen.CinemaView.route.replace("{id}", cinema.uid.toString())
-            Box(
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .padding(all = 10.dp)
-                    .clickable { navController?.navigate(cinemaId) }
-                    .background(
-                        color = MaterialTheme.colorScheme.secondary,
-                        shape = RoundedCornerShape(16.dp)
-                    )
-            ) {
-                Row(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(8.dp),
-                    verticalAlignment = Alignment.CenterVertically,
-                    horizontalArrangement = Arrangement.spacedBy(8.dp)
-                ) {
-                    if (cinema.image != null)
-                        Image(
-                            bitmap = BitmapFactory.decodeByteArray(
-                                cinema.image,
-                                0,
-                                cinema.image.size
-                            ).asImageBitmap(),
-                            contentDescription = null,
-                            modifier = Modifier
-                                .size(90.dp)
-                                .padding(4.dp)
-                        )
-
-                    Text(
-                        "${cinema.name}, ${cinema.year}",
-                        color = MaterialTheme.colorScheme.onSecondary
-                    )
-                }
-            }
-        }
-    }
-}
-
-@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
-@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
-@Composable
-fun CinemaListPreview() {
-    PmudemoTheme {
-        Surface(
-            color = MaterialTheme.colorScheme.background
-        ) {
-            CinemaList(navController = null)
-        }
-    }
-}

app/src/main/java/com/example/myapplication/entities/composeui/CinemaView.kt

@@ -1,209 +0,0 @@
-package com.example.myapplication.entities.composeui
-
-import android.content.res.Configuration
-import android.graphics.BitmapFactory
-import androidx.compose.foundation.Image
-import androidx.compose.foundation.background
-import androidx.compose.foundation.clickable
-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.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.size
-import androidx.compose.foundation.lazy.LazyColumn
-import androidx.compose.foundation.lazy.items
-import androidx.compose.foundation.shape.RoundedCornerShape
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.ShoppingCart
-import androidx.compose.material3.Icon
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Surface
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.mutableStateListOf
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.clip
-import androidx.compose.ui.graphics.asImageBitmap
-import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.text.TextStyle
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.tooling.preview.Preview
-import androidx.compose.ui.unit.dp
-import androidx.compose.ui.unit.sp
-import com.example.myapplication.database.AppDatabase
-import com.example.myapplication.entities.model.Cinema
-import com.example.myapplication.entities.model.SessionFromCinema
-import com.example.myapplication.ui.theme.PmudemoTheme
-import kotlinx.coroutines.Dispatchers
-import kotlinx.coroutines.withContext
-import org.threeten.bp.format.DateTimeFormatter
-
-@Composable
-fun CinemaView(id: Int) {
-    val context = LocalContext.current
-    val cinemaWithSessions = remember {
-        mutableStateListOf<Pair<Cinema, List<SessionFromCinema>>>()
-    }
-    LaunchedEffect(Unit) {
-        withContext(Dispatchers.IO) {
-            cinemaWithSessions.clear()
-            cinemaWithSessions
-                .addAll(AppDatabase.getInstance(context).cinemaDao().getByUid(id).map { (cinema, sessionFromCinema) ->
-                    Pair(cinema, sessionFromCinema)
-            })
-        }
-    }
-    val cinema = cinemaWithSessions.firstOrNull()?.first
-    val sessions = cinemaWithSessions.firstOrNull()?.second
-
-    LazyColumn(
-        modifier = Modifier
-            .fillMaxSize()
-            .padding(16.dp)
-    ) {
-        item {
-            Box(
-                modifier = Modifier
-                    .fillMaxSize()
-                    .background(
-                        color = MaterialTheme.colorScheme.secondary,
-                        shape = RoundedCornerShape(16.dp)
-                    )
-            ) {
-                Column(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(16.dp)
-                        .background(color = MaterialTheme.colorScheme.secondary),
-                    verticalArrangement = Arrangement.spacedBy(8.dp)
-                ) {
-                    Text(
-                        text = "${cinema?.name ?: ""}, ${cinema?.year ?: 1930}",
-                        style = TextStyle(
-                            fontWeight = FontWeight.Bold,
-                            fontSize = 18.sp,
-                            color = MaterialTheme.colorScheme.onSecondary
-                        ),
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .padding(bottom = 8.dp)
-                    )
-                    if (cinema?.image != null)
-                        Image(
-                            bitmap = BitmapFactory.decodeByteArray(
-                                cinema.image,
-                                0,
-                                cinema.image.size
-                            ).asImageBitmap(),
-                            contentDescription = null,
-                            modifier = Modifier
-                                .fillMaxWidth()
-                                .height(200.dp)
-                                .padding(4.dp)
-                        )
-
-                    Text(
-                        text = cinema?.description ?: "",
-                        color = MaterialTheme.colorScheme.onSecondary
-                    )
-                }
-            }
-        }
-        item {
-            Text(
-                text = "Сеансы",
-                style = TextStyle(
-                    fontWeight = FontWeight.Bold,
-                    fontSize = 18.sp,
-                    color = MaterialTheme.colorScheme.onBackground
-                ),
-                modifier = Modifier
-                    .fillMaxWidth()
-                    .padding(top = 8.dp, bottom = 8.dp),
-            )
-        }
-
-        if (sessions != null) {
-            items(sessions) { session ->
-                val dateFormatter = DateTimeFormatter.ofPattern("dd.MM.yyyy HH:mm")
-                val formattedDate = dateFormatter.format(session.dateTime)
-                Text(
-                    text = formattedDate,
-                    color = MaterialTheme.colorScheme.onBackground,
-                )
-                Box(
-                    modifier = Modifier
-                        .fillMaxWidth()
-                        .padding(10.dp)
-                        .clip(RoundedCornerShape(16.dp))
-                        .background(MaterialTheme.colorScheme.secondary)
-                ) {
-                    Row(
-                        modifier = Modifier
-                            .fillMaxWidth()
-                            .padding(8.dp),
-                        verticalAlignment = Alignment.CenterVertically,
-                        horizontalArrangement = Arrangement.SpaceBetween
-                    ) {
-                        if (cinema?.image != null)
-                            Image(
-                                bitmap = BitmapFactory.decodeByteArray(
-                                    cinema.image,
-                                    0,
-                                    cinema.image.size
-                                ).asImageBitmap(),
-                                contentDescription = null,
-                                modifier = Modifier
-                                    .size(90.dp)
-                                    .padding(4.dp)
-                            )
-
-                        Column(
-                            modifier = Modifier.weight(1f),
-                            verticalArrangement = Arrangement.spacedBy(4.dp)
-                        ) {
-                            Text(
-                                text = "Цена: ${session.price}\n" +
-                                        "Билетов: ${session.availableCount}",
-                                color = MaterialTheme.colorScheme.onSecondary
-                            )
-                        }
-                    }
-
-                    Icon(
-                        imageVector = Icons.Filled.ShoppingCart,
-                        contentDescription = null,
-                        modifier = Modifier
-                            .padding(10.dp)
-                            .size(24.dp)
-                            .clickable {}
-                            .align(Alignment.CenterEnd),
-                        tint = MaterialTheme.colorScheme.onSecondary
-                    )
-                }
-            }
-        }
-    }
-}
-
-
-@Preview(name = "Light Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_NO)
-@Preview(name = "Dark Mode", showBackground = true, uiMode = Configuration.UI_MODE_NIGHT_YES)
-@Composable
-fun CinemaViewPreview() {
-    PmudemoTheme {
-        Surface(
-            color = MaterialTheme.colorScheme.background
-        ) {
-            CinemaView(id = 0)
-        }
-    }
-}

app/src/main/java/com/example/myapplication/entities/dao/CinemaDao.kt

@@ -1,33 +0,0 @@
-package com.example.myapplication.entities.dao
-
-import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
-import androidx.room.Query
-import androidx.room.Update
-import com.example.myapplication.entities.model.Cinema
-import com.example.myapplication.entities.model.SessionFromCinema
-import kotlinx.coroutines.flow.Flow
-
-@Dao
-interface CinemaDao {
-    @Query("select * from cinemas order by name")
-    fun getAll(): Flow<List<Cinema>>
-
-    @Query("SELECT c.*, s.date_time, s.price, s.max_count-IFNULL(SUM(os.count), 0) as available_count " +
-            "FROM cinemas AS c " +
-            "JOIN sessions AS s ON s.cinema_id = c.uid " +
-            "LEFT JOIN orders_sessions AS os ON os.session_id = s.uid " +
-            "WHERE c.uid = :cinemaId " +
-            "GROUP BY os.session_id")
-    suspend fun getByUid(cinemaId: Int?): Map<Cinema, List<SessionFromCinema>>
-
-    @Insert
-    suspend fun insert(cinema: Cinema)
-
-    @Update
-    suspend fun update(cinema: Cinema)
-
-    @Delete
-    suspend fun delete(cinema: Cinema)
-}

app/src/main/java/com/example/myapplication/entities/dao/OrderDao.kt

@@ -1,32 +0,0 @@
-package com.example.myapplication.entities.dao
-
-import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
-import androidx.room.Query
-import androidx.room.Update
-import com.example.myapplication.entities.model.Order
-import com.example.myapplication.entities.model.SessionFromOrder
-import kotlinx.coroutines.flow.Flow
-
-@Dao
-interface OrderDao {
-    @Query("select * from orders where user_id = :userId")
-    fun getAll(userId: Int?): Flow<List<Order>>
-
-    @Query("SELECT o.*, s.*, os.count, os.frozen_price " +
-            "FROM orders AS o " +
-            "JOIN orders_sessions AS os ON os.order_id = o.uid " +
-            "JOIN sessions AS s ON s.uid = os.session_id " +
-            "WHERE o.uid = :orderId")
-    fun getByUid(orderId: Int?): List<SessionFromOrder>
-
-    @Insert
-    suspend fun insert(order: Order)
-
-    @Update
-    suspend fun update(order: Order)
-
-    @Delete
-    suspend fun delete(order: Order)
-}

app/src/main/java/com/example/myapplication/entities/model/SessionFromCinema.kt

@@ -1,14 +0,0 @@
-package com.example.myapplication.entities.model
-
-import androidx.room.ColumnInfo
-import org.threeten.bp.LocalDateTime
-
-data class SessionFromCinema (
-    @ColumnInfo(name = "uid")
-    val uid: Int?,
-    @ColumnInfo(name = "date_time")
-    val dateTime: LocalDateTime,
-    val price: Double,
-    @ColumnInfo(name = "available_count")
-    val availableCount: Int,
-)

app/src/main/java/com/example/myapplication/entities/model/UserSessionCrossRef.kt

@@ -1,17 +0,0 @@
-package com.example.myapplication.entities.model
-
-import androidx.room.ColumnInfo
-import androidx.room.Entity
-
-@Entity(
-    tableName = "users_sessions",
-    primaryKeys = ["user_id", "session_id"]
-)
-data class UserSessionCrossRef(
-    @ColumnInfo(name = "user_id", index = true)
-    val userId: Int,
-    @ColumnInfo(name = "session_id", index = true)
-    val sessionId: Int,
-    @ColumnInfo(name = "count")
-    val count: Int,
-)

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

@@ -3,6 +3,7 @@
     android:height="24dp"
     android:viewportWidth="24"
     android:viewportHeight="24">
-    <path android:fillColor="#000000"
+    <path
-        android:pathData="M19,13H5v-2h14v2z"/>
+        android:fillColor="#000000"
+        android:pathData="M19,13H5v-2h14v2z" />
 </vector>

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

@@ -1,25 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-android:width="64dp"
-android:height="64dp"
-android:viewportWidth="64"
-android:viewportHeight="64">
-
-    <svg xmlns="http://www.w3.org/2000/svg" width="64" height="64" viewBox="0 0 64 64">
-        <!-- Зона фона -->
-        <rect width="64" height="64" rx="8" ry="8" fill="#FFC107" />
-
-        <!-- Билет -->
-        <rect x="8" y="12" width="48" height="40" rx="4" ry="4" fill="#FFFFFF" />
-
-        <!-- Линия для разделения -->
-        <line x1="8" y1="32" x2="56" y2="32" stroke="#FFA000" stroke-width="2" />
-
-        <!-- Линия для номера билета -->
-        <line x1="16" y1="48" x2="48" y2="48" stroke="#FFA000" stroke-width="2" />
-
-        <!-- Текст для номера билета -->
-        <text x="32" y="53" fill="#FFA000" font-size="12" text-anchor="middle">
-        </text>
-    </svg>
-
-</vector>

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

@@ -2,6 +2,7 @@
     <string name="app_name">pmu-demo</string>
     <string name="Cinema_main_title">Фильмы</string>
     <string name="Cinema_view_title">Фильм</string>
+    <string name="Session_view_title">Сеанс</string>
     <string name="Order_view_title">Заказ</string>
     <string name="Cinema_name">Название</string>
     <string name="Cinema_year">Год</string>
@@ -11,4 +12,11 @@
     <string name="Order_title">Мои заказы</string>
     <string name="Profile_title">Профиль</string>
     <string name="Sessions_title">Сеансы</string>
+    <string name="Session_dateTime">Время</string>
+    <string name="Save_button">Сохранить</string>
+    <string name="Cinema_empty_description">Записи о фильмах отсутствуют</string>
+    <string name="Session_empty_description">Записи о сеансах отсутствуют</string>
+    <string name="session_cinema_not_select">Фильм не указан</string>
+    <string name="size">Размер загруженного изображения: %1$dx%2$d</string>
+    <string name="not_uploaded">Загрузите изображение</string>
 </resources>

app/src/test/java/com/example/myapplication/ExampleUnitTest.kt

@@ -1,9 +1,8 @@
 package com.example.myapplication
 
+import org.junit.Assert.assertEquals
 import org.junit.Test
 
-import org.junit.Assert.*
-
 /**
  * Example local unit test, which will execute on the development machine (host).
  *