Merge remote-tracking branch 'origin/lab5' into lab5

# Conflicts:
#	app/src/main/java/com/example/myapplication/api/MyServerService.kt
#	app/src/main/java/com/example/myapplication/database/AppViewModelProvider.kt
#	app/src/main/java/com/example/myapplication/database/entities/composeui/edit/BikeEdit.kt
#	app/src/main/java/com/example/myapplication/database/entities/composeui/edit/BikeEditViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/bike/BikeListViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/bike/BikeViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/cart/CartViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/item/ItemEditViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/item/ItemListViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/rent/RentListViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/rent/RentViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/rent/ReportViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/user/CurrentUserViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/user/EntryUserViewModel.kt
#	app/src/main/java/com/example/myapplication/database/room/viewmodel/user/RegisterUserViewModel.kt
#	app/src/main/java/com/example/myapplication/ui/edit/ItemEdit.kt
#	app/src/main/java/com/example/myapplication/ui/list/BikeList.kt
#	app/src/main/java/com/example/myapplication/ui/list/ItemList.kt
#	app/src/main/java/com/example/myapplication/ui/navigation/MainNavbar.kt
#	app/src/main/java/com/example/myapplication/ui/view/BikeView.kt
#	app/src/main/res/xml/network_security_config.xml
#	server/data.json

app/src/main/java/com/example/myapplication/api/ApiStatus.kt

@@ -0,0 +1,5 @@
+package com.example.myapplication.api
+
+enum class ApiStatus {
+    LOADING, ERROR, DONE
+}

app/src/main/java/com/example/myapplication/database/room/viewmodel/LoadingViewModel.kt

@@ -0,0 +1,50 @@
+package com.example.myapplication.database.room.viewmodel
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.myapplication.api.ApiStatus
+import kotlinx.coroutines.launch
+import retrofit2.HttpException
+import java.io.IOException
+
+open class LoadingViewModel : ViewModel() {
+    var apiStatus by mutableStateOf(ApiStatus.DONE)
+        private set
+
+    var apiError by mutableStateOf("")
+        private set
+
+    fun runInScope(
+        actionSuccess: suspend () -> Unit,
+        actionError: suspend () -> Unit,
+        needLoadingScreen: Boolean = true,
+    ) {
+        viewModelScope.launch {
+            if (needLoadingScreen)
+                apiStatus = ApiStatus.LOADING
+            runCatching {
+                actionSuccess()
+                apiStatus = ApiStatus.DONE
+                apiError = ""
+            }.onFailure { e: Throwable ->
+                when (e) {
+                    is IOException,
+                    is HttpException -> {
+                        actionError()
+                        apiStatus = ApiStatus.ERROR
+                        apiError = e.localizedMessage ?: e.toString()
+                    }
+
+                    else -> throw e
+                }
+            }
+        }
+    }
+
+    fun runInScope(actionSuccess: suspend () -> Unit) {
+        runInScope(actionSuccess, actionError = {})
+    }
+}

app/src/main/java/com/example/myapplication/ui/view/LoadingView.kt

@@ -0,0 +1,64 @@
+package com.example.myapplication.ui.view
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+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.material3.Button
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.TextUnit
+import androidx.compose.ui.unit.TextUnitType
+import androidx.compose.ui.unit.dp
+import com.example.myapplication.R
+
+@Composable
+fun LoadingView() {
+    Column(
+    modifier = Modifier
+    .fillMaxSize()
+    .padding(10.dp),
+    horizontalAlignment = Alignment.CenterHorizontally,
+    verticalArrangement = Arrangement.Center
+    ) {
+        Text(
+            modifier = Modifier.fillMaxWidth(),
+            textAlign = TextAlign.Center,
+            fontSize = TextUnit(value = 25F, type = TextUnitType.Sp),
+            text = stringResource(id = R.string.loading)
+        )
+    }
+}
+
+@Composable
+fun ErrorView(message: String, onBack: () -> Unit) {
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(10.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        verticalArrangement = Arrangement.Center
+    ) {
+        Text(
+            modifier = Modifier.fillMaxWidth(),
+            textAlign = TextAlign.Center,
+            fontSize = TextUnit(value = 20F, type = TextUnitType.Sp),
+            text = message,
+            color = Color(0xFFFF1744)
+        )
+        Spacer(modifier = Modifier.padding(bottom = 10.dp))
+        Button(
+            modifier = Modifier.fillMaxWidth(),
+            onClick = { onBack() }
+        ) {
+            Text(stringResource(id = R.string.back))
+        }
+    }
+}

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

@@ -21,4 +21,6 @@
     <string name="item_bike_not_select">Велосипед не указан</string>
     <string name="size">Размер загруженного изображения: %1$dx%2$d</string>
     <string name="not_uploaded">Загрузите изображение</string>
+    <string name="loading">Загрузка…</string>
+    <string name="back">Назад</string>
 </resources>