Initial commit

app/build.gradle.kts

@@ -1,5 +1,7 @@
 plugins {
+    composeCompiler
     kotlinAndroid
+    kotlinSerialization version Version.Kotlin.language
     androidApplication
 }
 
@@ -19,6 +21,7 @@ android {
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }
 
+    buildFeatures.compose = true
     buildFeatures.viewBinding = true
 
     compileOptions {
@@ -32,6 +35,11 @@ android {
 }
 
 dependencies {
-    defaultLibrary()
+    defaultComposeLibrary()
-
+    val ktor = "3.3.1"
+    implementation("io.ktor:ktor-client-core:$ktor")
+    implementation("io.ktor:ktor-client-cio:$ktor")
+    implementation("io.ktor:ktor-client-content-negotiation:$ktor")
+    implementation("io.ktor:ktor-serialization-kotlinx-json:$ktor")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.9.0")
 }

app/src/main/AndroidManifest.xml

@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -10,7 +12,19 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.Default"
+        android:usesCleartextTraffic="true"
-        tools:targetApi="31" />
+        tools:targetApi="31">
+        <activity
+            android:name=".ui.root.RootActivity"
+            android:exported="true"
+            android:windowSoftInputMode="adjustResize"
+            android:label="@string/title_activity_root">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
 
 </manifest>

app/src/main/java/ru/myitschool/work/core/Constants.kt

@@ -0,0 +1,9 @@
+package ru.myitschool.work.core
+
+object Constants {
+    const val HOST = "http://10.0.2.2:8080"
+    const val USER_URL = "/user"
+    const val FULL_USER_URL = "$HOST$USER_URL"
+    const val BOOK_URL = "/book"
+    const val FULL_BOOK_URL = "$HOST$BOOK_URL"
+}

app/src/main/java/ru/myitschool/work/data/AppRepository.kt

@@ -0,0 +1,26 @@
+package ru.myitschool.work.data
+
+import ru.myitschool.work.data.source.NetworkDataSource
+import ru.myitschool.work.domain.entities.BookingEntity
+import ru.myitschool.work.domain.entities.UserEntity
+
+object AppRepository {
+    suspend fun loadData(): Result<UserEntity> {
+        return NetworkDataSource.getUser().map { dto ->
+            UserEntity(
+                name = dto.name,
+                booking = dto.booking.map { bookingDto ->
+                    BookingEntity(
+                        room = bookingDto.room,
+                        time = bookingDto.time
+                    )
+                }
+            )
+        }
+    }
+
+    suspend fun addBook(room: String, time: String): Result<Unit> {
+        return NetworkDataSource.addBook(room, time)
+    }
+
+}

app/src/main/java/ru/myitschool/work/data/dto/ErrorDto.kt

@@ -0,0 +1,10 @@
+package ru.myitschool.work.data.dto
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class ErrorDto(
+    @SerialName("error")
+    val error: String,
+)

app/src/main/java/ru/myitschool/work/data/dto/UserDto.kt

@@ -0,0 +1,20 @@
+package ru.myitschool.work.data.dto
+
+import kotlinx.serialization.SerialName
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class UserDto(
+    @SerialName("name")
+    val name: String,
+    @SerialName("booking")
+    val booking: List<BookingDto>
+) {
+    @Serializable
+    data class BookingDto(
+        @SerialName("room")
+        val room: String,
+        @SerialName("time")
+        val time: String,
+    )
+}

app/src/main/java/ru/myitschool/work/data/source/NetworkDataSource.kt

@@ -0,0 +1,71 @@
+package ru.myitschool.work.data.source
+
+import io.ktor.client.HttpClient
+import io.ktor.client.call.body
+import io.ktor.client.engine.cio.CIO
+import io.ktor.client.plugins.contentnegotiation.ContentNegotiation
+import io.ktor.client.request.forms.FormPart
+import io.ktor.client.request.forms.MultiPartFormDataContent
+import io.ktor.client.request.forms.formData
+import io.ktor.client.request.get
+import io.ktor.client.request.post
+import io.ktor.client.request.setBody
+import io.ktor.http.HttpStatusCode
+import io.ktor.serialization.kotlinx.json.json
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import kotlinx.serialization.json.Json
+import ru.myitschool.work.core.Constants
+import ru.myitschool.work.data.dto.ErrorDto
+import ru.myitschool.work.data.dto.UserDto
+
+object NetworkDataSource {
+    private val client by lazy {
+        HttpClient(CIO) {
+            install(ContentNegotiation) {
+                json(
+                    Json {
+                        isLenient = true
+                        ignoreUnknownKeys = true
+                        explicitNulls = true
+                        encodeDefaults = true
+                    }
+                )
+            }
+        }
+    }
+
+    suspend fun getUser(): Result<UserDto> = withContext(Dispatchers.IO) {
+        return@withContext runCatching {
+            val response = client.get(Constants.FULL_USER_URL)
+            if (response.status == HttpStatusCode.OK) {
+                response.body<UserDto>()
+            } else {
+                error(response.body<ErrorDto>().error)
+            }
+        }
+    }
+
+    suspend fun addBook(
+        room: String,
+        time: String,
+    ): Result<Unit> = withContext(Dispatchers.IO) {
+        return@withContext runCatching {
+            val response = client.post(Constants.FULL_BOOK_URL) {
+                setBody(
+                    MultiPartFormDataContent(
+                        formData(
+                            FormPart("room", room),
+                            FormPart("time", time),
+                        )
+                    )
+                )
+            }
+            if (response.status == HttpStatusCode.OK) {
+                Unit
+            } else {
+                error(response.body<ErrorDto>().error)
+            }
+        }
+    }
+}

app/src/main/java/ru/myitschool/work/domain/AddBookUseCase.kt

@@ -0,0 +1,17 @@
+package ru.myitschool.work.domain
+
+import ru.myitschool.work.data.AppRepository
+
+class AddBookUseCase(
+    private val repository: AppRepository
+) {
+    suspend operator fun invoke(
+        room: String,
+        time: String,
+    ): Result<Unit> {
+        return repository.addBook(
+            room = room,
+            time = time,
+        )
+    }
+}

app/src/main/java/ru/myitschool/work/domain/GetUserDataUseCase.kt

@@ -0,0 +1,12 @@
+package ru.myitschool.work.domain
+
+import ru.myitschool.work.data.AppRepository
+import ru.myitschool.work.domain.entities.UserEntity
+
+class GetUserDataUseCase(
+    private val repository: AppRepository
+) {
+    suspend operator fun invoke(): Result<UserEntity> {
+        return repository.loadData()
+    }
+}

app/src/main/java/ru/myitschool/work/domain/entities/BookingEntity.kt

@@ -0,0 +1,6 @@
+package ru.myitschool.work.domain.entities
+
+data class BookingEntity(
+    val room: String,
+    val time: String,
+)

app/src/main/java/ru/myitschool/work/domain/entities/UserEntity.kt

@@ -0,0 +1,6 @@
+package ru.myitschool.work.domain.entities
+
+data class UserEntity(
+    val name: String,
+    val booking: List<BookingEntity>
+)

app/src/main/java/ru/myitschool/work/ui/root/RootActivity.kt

@@ -0,0 +1,181 @@
+package ru.myitschool.work.ui.root
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+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.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.Button
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextField
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import ru.myitschool.work.ui.theme.WorkTheme
+
+class RootActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContent {
+            WorkTheme {
+                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
+                    Screen(
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(innerPadding)
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun Screen(
+    modifier: Modifier = Modifier,
+    viewModel: RootViewModel = viewModel()
+) {
+    val state by viewModel.uiState.collectAsState()
+
+    when (val currentState = state) {
+        is RootState.Content -> {
+            Column(
+                modifier = modifier,
+            ) {
+                Row(
+                    modifier = Modifier.padding(horizontal = 8.dp),
+                    verticalAlignment = Alignment.CenterVertically,
+                ) {
+                    Text(
+                        modifier = Modifier.weight(1f),
+                        text = currentState.userEntity.name,
+                        style = MaterialTheme.typography.headlineSmall
+                    )
+                    ButtonGetData(viewModel)
+                }
+                LazyColumn(
+                    modifier = Modifier.weight(1f)
+                ) {
+                    items(currentState.userEntity.booking) { book ->
+                        Row(
+                            modifier = Modifier.padding(vertical = 16.dp, horizontal = 8.dp),
+                            verticalAlignment = Alignment.CenterVertically
+                        ) {
+                            Text(
+                                modifier = Modifier.weight(1f),
+                                text = book.room,
+                                style = MaterialTheme.typography.bodyLarge
+                            )
+                            Text(
+                                text = book.time,
+                                style = MaterialTheme.typography.bodySmall
+                            )
+                        }
+                    }
+                }
+                Row(
+                    modifier = Modifier.padding(horizontal = 8.dp),
+                    verticalAlignment = Alignment.CenterVertically,
+                ) {
+                    var roomText by remember { mutableStateOf("") }
+                    var timeText by remember { mutableStateOf("") }
+
+                    Column(modifier = Modifier.weight(1f)) {
+                        TextField(
+                            modifier = Modifier.fillMaxWidth(),
+                            value = roomText,
+                            onValueChange = { roomText = it },
+                            label = { Text("Room") }
+                        )
+                        TextField(
+                            modifier = Modifier
+                                .padding(top = 8.dp)
+                                .fillMaxWidth(),
+                            value = timeText,
+                            onValueChange = { timeText = it },
+                            label = { Text("Time") }
+                        )
+                    }
+                    Column(
+                        modifier = Modifier.padding(start = 8.dp),
+                    ) {
+                        Button(
+                            onClick = {
+                                viewModel.onIntent(
+                                    RootIntent.AddBook(room = roomText, time = timeText)
+                                )
+                                roomText = ""
+                                timeText = ""
+                            }
+                        ) {
+                            Text(text = "Add")
+                        }
+                        if (currentState.errorText != null) {
+                            Text(text = currentState.errorText)
+                        }
+                    }
+                }
+            }
+
+        }
+
+        is RootState.Error -> {
+            Column(
+                modifier = modifier,
+                verticalArrangement = Arrangement.Center,
+                horizontalAlignment = Alignment.CenterHorizontally,
+            ) {
+                Text(text = currentState.message)
+                ButtonGetData(viewModel)
+            }
+        }
+
+        is RootState.Loading -> {
+            Box(
+                modifier = modifier,
+                contentAlignment = Alignment.Center,
+            ) {
+                CircularProgressIndicator(modifier = Modifier.size(64.dp))
+            }
+        }
+
+        is RootState.NotLoaded -> {
+            Box(
+                modifier = modifier,
+                contentAlignment = Alignment.Center,
+            ) {
+                ButtonGetData(viewModel)
+            }
+
+        }
+    }
+}
+
+@Composable
+private fun ButtonGetData(
+    viewModel: RootViewModel
+) {
+    Button(onClick = { viewModel.onIntent(RootIntent.LoadData) }) {
+        Text(text = "Get load")
+    }
+}

app/src/main/java/ru/myitschool/work/ui/root/RootIntent.kt

@@ -0,0 +1,9 @@
+package ru.myitschool.work.ui.root
+
+sealed interface RootIntent {
+    data object LoadData: RootIntent
+    data class AddBook(
+        val room: String,
+        val time: String
+    ): RootIntent
+}

app/src/main/java/ru/myitschool/work/ui/root/RootState.kt

@@ -0,0 +1,13 @@
+package ru.myitschool.work.ui.root
+
+import ru.myitschool.work.domain.entities.UserEntity
+
+sealed interface RootState {
+    data object NotLoaded: RootState
+    data object Loading: RootState
+    data class Error(val message: String): RootState
+    data class Content(
+        val userEntity: UserEntity,
+        val errorText: String?,
+    ): RootState
+}

app/src/main/java/ru/myitschool/work/ui/root/RootViewModel.kt

@@ -0,0 +1,68 @@
+package ru.myitschool.work.ui.root
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import ru.myitschool.work.data.AppRepository
+import ru.myitschool.work.domain.AddBookUseCase
+import ru.myitschool.work.domain.GetUserDataUseCase
+
+class RootViewModel : ViewModel() {
+    private val getUserDataUseCase by lazy {
+        GetUserDataUseCase(
+            repository = AppRepository
+        )
+    }
+    private val addBookUseCase by lazy {
+        AddBookUseCase(
+            repository = AppRepository
+        )
+    }
+    private val _uiState = MutableStateFlow<RootState>(RootState.NotLoaded)
+    val uiState: StateFlow<RootState> = _uiState.asStateFlow()
+
+    fun onIntent(intent: RootIntent) {
+        when (intent) {
+            is RootIntent.LoadData -> loadData()
+            is RootIntent.AddBook -> addBook(intent)
+        }
+    }
+
+    private fun loadData() {
+        viewModelScope.launch {
+            _uiState.emit(RootState.Loading)
+            getUserDataUseCase.invoke().fold(
+                onSuccess = { value ->
+                    _uiState.emit(RootState.Content(userEntity = value, errorText = null))
+                },
+                onFailure = { error ->
+                    _uiState.emit(RootState.Error(error.message.orEmpty()))
+                }
+            )
+        }
+    }
+
+    private fun addBook(intent: RootIntent.AddBook) {
+        viewModelScope.launch {
+            addBookUseCase.invoke(
+                room = intent.room,
+                time = intent.time
+            ).fold(
+                onSuccess = {
+                    loadData()
+                },
+                onFailure = { error ->
+                    _uiState.update { state ->
+                        (state as? RootState.Content)?.copy(
+                            errorText = error.message
+                        ) ?: state
+                    }
+                }
+            )
+        }
+    }
+}

app/src/main/java/ru/myitschool/work/ui/theme/Color.kt

@@ -0,0 +1,11 @@
+package ru.myitschool.work.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650a4)
+val PurpleGrey40 = Color(0xFF625b71)
+val Pink40 = Color(0xFF7D5260)

app/src/main/java/ru/myitschool/work/ui/theme/Theme.kt

@@ -0,0 +1,57 @@
+package ru.myitschool.work.ui.theme
+
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+
+private val DarkColorScheme = darkColorScheme(
+    primary = Purple80,
+    secondary = PurpleGrey80,
+    tertiary = Pink80
+)
+
+private val LightColorScheme = lightColorScheme(
+    primary = Purple40,
+    secondary = PurpleGrey40,
+    tertiary = Pink40
+
+    /* Other default colors to override
+    background = Color(0xFFFFFBFE),
+    surface = Color(0xFFFFFBFE),
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onTertiary = Color.White,
+    onBackground = Color(0xFF1C1B1F),
+    onSurface = Color(0xFF1C1B1F),
+    */
+)
+
+@Composable
+fun WorkTheme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    // Dynamic color is available on Android 12+
+    dynamicColor: Boolean = true,
+    content: @Composable () -> Unit
+) {
+    val colorScheme = when {
+        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+            val context = LocalContext.current
+            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        }
+
+        darkTheme -> DarkColorScheme
+        else -> LightColorScheme
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content
+    )
+}

app/src/main/java/ru/myitschool/work/ui/theme/Type.kt

@@ -0,0 +1,34 @@
+package ru.myitschool.work.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+    bodyLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 16.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.5.sp
+    )
+    /* Other default text styles to override
+    titleLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 11.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    )
+    */
+)

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

@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">Work</string>
+    <string name="title_activity_root">RootActivity</string>
 </resources>

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

@@ -1,16 +0,0 @@
-<resources xmlns:tools="http://schemas.android.com/tools">
-    <!-- Base application theme. -->
-    <style name="Theme.Default" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
-        <!-- Primary brand color. -->
-        <item name="colorPrimary">@color/purple_500</item>
-        <item name="colorPrimaryVariant">@color/purple_700</item>
-        <item name="colorOnPrimary">@color/white</item>
-        <!-- Secondary brand color. -->
-        <item name="colorSecondary">@color/teal_200</item>
-        <item name="colorSecondaryVariant">@color/teal_700</item>
-        <item name="colorOnSecondary">@color/black</item>
-        <!-- Status bar color. -->
-        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
-        <!-- Customize your theme here. -->
-    </style>
-</resources>

build.gradle.kts

@@ -2,4 +2,6 @@
 plugins {
     androidApplication version Version.agp apply false
     kotlinJvm version Version.Kotlin.language apply false
+    kotlinAndroid version Version.Kotlin.language apply false
+    composeCompiler version Version.Kotlin.language apply false
 }