Base app working

app/build.gradle.kts

@@ -0,0 +1,62 @@
+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.serialization)
+}
+
+android {
+    namespace = "com.example.budget"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "com.example.budget"
+        minSdk = 24
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary = true
+        }
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_1_8
+        targetCompatibility = JavaVersion.VERSION_1_8
+    }
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+    buildFeatures {
+        compose = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = "1.5.8"
+    }
+    packaging {
+        resources {
+            excludes += "/META-INF/{AL2.0,LGPL2.1}"
+        }
+    }
+}
+
+dependencies {
+    implementation(libs.bundles.base)
+    implementation(platform(libs.compose.bom))
+    implementation(libs.bundles.compose)
+    implementation(libs.bundles.network)
+    
+    debugImplementation(libs.bundles.compose.debug)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.bundles.android.test)
+}

app/src/main/AndroidManifest.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="Бюджет"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@android:style/Theme.Material.Light.NoActionBar">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:theme="@android:style/Theme.Material.Light.NoActionBar">
+            <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/com/example/budget/MainActivity.kt

@@ -0,0 +1,184 @@
+package com.example.budget
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.List
+import androidx.compose.material.icons.filled.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import androidx.navigation.NavDestination.Companion.hierarchy
+import androidx.navigation.NavGraph.Companion.findStartDestination
+import androidx.navigation.NavType
+import androidx.navigation.compose.*
+import androidx.navigation.navArgument
+import com.example.budget.network.ApiClient
+import com.example.budget.network.SessionManager
+import com.example.budget.ui.auth.AuthScreen
+import com.example.budget.ui.auth.AuthViewModel
+import com.example.budget.ui.main.MainScreen
+import com.example.budget.ui.planning.PlanningScreen
+import com.example.budget.ui.stats.StatsScreen
+import com.example.budget.ui.transaction.AddEditTransactionScreen
+
+sealed class Screen(val route: String, val title: String, val icon: ImageVector) {
+    object Main : Screen("main", "Обзор", Icons.AutoMirrored.Filled.List)
+    object Stats : Screen("stats", "Анализ", Icons.Default.PieChart)
+    object Planning : Screen("planning", "Планы", Icons.Default.DateRange)
+    object Profile : Screen("profile", "Профиль", Icons.Default.Person)
+}
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        
+        val sessionManager = SessionManager(this)
+        ApiClient.init(sessionManager)
+
+        setContent {
+            MaterialTheme {
+                Surface(
+                    modifier = Modifier.fillMaxSize(),
+                    color = MaterialTheme.colorScheme.background
+                ) {
+                    BudgetNavHost(sessionManager)
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun BudgetNavHost(sessionManager: SessionManager) {
+    val navController = rememberNavController()
+    val hasToken = sessionManager.hasToken()
+    val startDestination = if (hasToken) "home_scaffold" else "auth"
+
+    NavHost(navController = navController, startDestination = startDestination) {
+        composable("auth") {
+            val authViewModel: AuthViewModel = viewModel()
+            authViewModel.init(sessionManager)
+            AuthScreen(
+                onLoginSuccess = {
+                    navController.navigate("home_scaffold") {
+                        popUpTo("auth") { inclusive = true }
+                    }
+                },
+                viewModel = authViewModel
+            )
+        }
+        
+        composable("home_scaffold") {
+            HomeScaffold(navController, sessionManager)
+        }
+        
+        composable(
+            route = "add_edit_transaction?transactionId={transactionId}",
+            arguments = listOf(
+                navArgument("transactionId") {
+                    type = NavType.IntType
+                    defaultValue = -1
+                }
+            )
+        ) { backStackEntry ->
+            val transactionId = backStackEntry.arguments?.getInt("transactionId")?.takeIf { it != -1 }
+            AddEditTransactionScreen(
+                transactionId = transactionId,
+                onNavigateBack = { navController.popBackStack() }
+            )
+        }
+    }
+}
+
+@Composable
+fun HomeScaffold(rootNavController: androidx.navigation.NavController, sessionManager: SessionManager) {
+    val bottomNavController = rememberNavController()
+    val items = listOf(Screen.Main, Screen.Stats, Screen.Planning, Screen.Profile)
+
+    Scaffold(
+        bottomBar = {
+            NavigationBar {
+                val navBackStackEntry by bottomNavController.currentBackStackEntryAsState()
+                val currentDestination = navBackStackEntry?.destination
+                items.forEach { screen ->
+                    NavigationBarItem(
+                        icon = { Icon(screen.icon, contentDescription = null) },
+                        label = { Text(screen.title) },
+                        selected = currentDestination?.hierarchy?.any { it.route == screen.route } == true,
+                        onClick = {
+                            bottomNavController.navigate(screen.route) {
+                                popUpTo(bottomNavController.graph.findStartDestination().id) {
+                                    saveState = true
+                                }
+                                launchSingleTop = true
+                                restoreState = true
+                            }
+                        }
+                    )
+                }
+            }
+        }
+    ) { innerPadding ->
+        NavHost(
+            navController = bottomNavController,
+            startDestination = Screen.Main.route,
+            modifier = Modifier.padding(innerPadding)
+        ) {
+            composable(Screen.Main.route) {
+                MainScreen(
+                    onAddTransaction = {
+                        rootNavController.navigate("add_edit_transaction")
+                    },
+                    onEditTransaction = { id ->
+                        rootNavController.navigate("add_edit_transaction?transactionId=$id")
+                    }
+                )
+            }
+            composable(Screen.Stats.route) {
+                StatsScreen()
+            }
+            composable(Screen.Planning.route) {
+                PlanningScreen()
+            }
+            composable(Screen.Profile.route) {
+                ProfileScreen(onLogout = {
+                    sessionManager.clearSession()
+                    rootNavController.navigate("auth") {
+                        popUpTo("home_scaffold") { inclusive = true }
+                    }
+                })
+            }
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun ProfileScreen(onLogout: () -> Unit) {
+    Scaffold(
+        topBar = { TopAppBar(title = { Text("Профиль") }) }
+    ) { padding ->
+        androidx.compose.foundation.layout.Column(
+            modifier = Modifier
+                .padding(padding)
+                .padding(16.dp)
+                .fillMaxSize(),
+            horizontalAlignment = androidx.compose.ui.Alignment.CenterHorizontally,
+            verticalArrangement = androidx.compose.foundation.layout.Arrangement.Center
+        ) {
+            Button(
+                onClick = onLogout,
+                colors = ButtonDefaults.buttonColors(containerColor = MaterialTheme.colorScheme.error)
+            ) {
+                Text("Выйти из аккаунта")
+            }
+        }
+    }
+}

app/src/main/java/com/example/budget/network/ApiClient.kt

@@ -0,0 +1,52 @@
+package com.example.budget.network
+
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
+import kotlinx.serialization.json.Json
+import okhttp3.MediaType.Companion.toMediaType
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Interceptor
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+
+object ApiClient {
+
+    private const val BASE_URL = "https://tube.buhit.uz/"
+
+    private var sessionManager: SessionManager? = null
+
+    fun init(manager: SessionManager) {
+        sessionManager = manager
+    }
+
+    private val json = Json {
+        ignoreUnknownKeys = true
+    }
+
+    private val loggingInterceptor = HttpLoggingInterceptor().apply {
+        level = HttpLoggingInterceptor.Level.BODY
+    }
+
+    private val authInterceptor = Interceptor { chain ->
+        val originalRequest = chain.request()
+        val builder: Request.Builder = originalRequest.newBuilder()
+        sessionManager?.getAuthToken()?.let {
+            builder.header("Authorization", "Bearer $it")
+        }
+        chain.proceed(builder.build())
+    }
+
+    private val okHttpClient = OkHttpClient.Builder()
+        .addInterceptor(loggingInterceptor)
+        .addInterceptor(authInterceptor)
+        .build()
+
+    val apiService: BudgetApiService by lazy {
+        Retrofit.Builder()
+            .baseUrl(BASE_URL)
+            .client(okHttpClient)
+            .addConverterFactory(json.asConverterFactory("application/json".toMediaType()))
+            .build()
+            .create(BudgetApiService::class.java)
+    }
+}

app/src/main/java/com/example/budget/network/BudgetApiService.kt

@@ -0,0 +1,50 @@
+package com.example.budget.network
+
+import retrofit2.http.*
+
+interface BudgetApiService {
+
+    @POST("/api/auth/login")
+    suspend fun login(@Body request: LoginRequest): TokenResponse
+
+    // Transactions
+    @GET("/api/transactions")
+    suspend fun getTransactions(@Query("limit") limit: Int = 100): List<TransactionResponse>
+
+    @GET("/api/transactions/{id}")
+    suspend fun getTransaction(@Path("id") id: Int): TransactionResponse
+
+    @POST("/api/transactions")
+    suspend fun createTransaction(@Body transaction: TransactionCreate): TransactionResponse
+
+    @PATCH("/api/transactions/{id}")
+    suspend fun updateTransaction(@Path("id") id: Int, @Body transaction: TransactionUpdate): TransactionResponse
+
+    @DELETE("/api/transactions/{id}")
+    suspend fun deleteTransaction(@Path("id") id: Int)
+
+    @GET("/api/transactions/stats")
+    suspend fun getStats(
+        @Query("start_date") startDate: String? = null,
+        @Query("end_date") endDate: String? = null
+    ): StatsResponse
+
+    // Categories
+    @GET("/api/categories")
+    suspend fun getCategories(@Query("type") type: String? = null): List<CategoryResponse>
+
+    // Wallets
+    @GET("/api/wallets")
+    suspend fun getWallets(): List<WalletResponse>
+
+    @POST("/api/wallets/transfer")
+    suspend fun transferMoney(@Body request: WalletTransferRequest)
+
+    // Debts
+    @GET("/api/debts")
+    suspend fun getDebts(): List<DebtResponse>
+
+    // Planned Payments
+    @GET("/api/planned_payments")
+    suspend fun getPlannedPayments(): List<PlannedPaymentResponse>
+}

app/src/main/java/com/example/budget/network/NetworkModels.kt

@@ -0,0 +1,138 @@
+package com.example.budget.network
+
+import kotlinx.serialization.Serializable
+import kotlinx.serialization.SerialName
+
+@Serializable
+data class LoginRequest(
+    val username: String,
+    val password: String
+)
+
+@Serializable
+data class TokenResponse(
+    val token: String,
+    val user: UserResponse? = null
+)
+
+@Serializable
+data class UserResponse(
+    val id: Int,
+    val username: String? = null,
+    @SerialName("telegram_id") val telegramId: Long? = null
+)
+
+@Serializable
+data class TransactionResponse(
+    val id: Int,
+    val amount: Double,
+    val type: String, // "expense" or "income"
+    val date: String,
+    val comment: String? = null,
+    val currency: String,
+    @SerialName("category_id") val categoryId: Int? = null,
+    @SerialName("wallet_id") val walletId: Int? = null,
+    @SerialName("category_name") val categoryName: String? = null,
+    @SerialName("tag_name") val tagName: String? = null
+)
+
+@Serializable
+data class TransactionCreate(
+    val amount: Double,
+    @SerialName("category_id") val categoryId: Int? = null,
+    val type: String,
+    val date: String,
+    val comment: String? = null,
+    val currency: String = "UZS",
+    @SerialName("wallet_id") val walletId: Int? = null
+)
+
+@Serializable
+data class TransactionUpdate(
+    val amount: Double? = null,
+    @SerialName("category_id") val categoryId: Int? = null,
+    val type: String? = null,
+    val date: String? = null,
+    val comment: String? = null,
+    val currency: String? = null,
+    @SerialName("wallet_id") val walletId: Int? = null
+)
+
+@Serializable
+data class CategoryResponse(
+    val id: Int,
+    val name: String,
+    val type: String
+)
+
+@Serializable
+data class WalletResponse(
+    val id: Int,
+    val name: String,
+    val balance: Double,
+    val currency: String,
+    @SerialName("is_default") val isDefault: Boolean = false
+)
+
+@Serializable
+data class WalletTransferRequest(
+    @SerialName("from_wallet_id") val fromWalletId: Int,
+    @SerialName("to_wallet_id") val toWalletId: Int,
+    val amount: Double
+)
+
+@Serializable
+data class DebtResponse(
+    val id: Int,
+    val name: String,
+    val type: String, // "credit" or "debt"
+    val amount: Double,
+    val currency: String,
+    @SerialName("due_date") val dueDate: String? = null,
+    @SerialName("is_paid") val isPaid: Boolean = false
+)
+
+@Serializable
+data class PlannedPaymentResponse(
+    val id: Int,
+    val name: String,
+    val amount: Double,
+    val currency: String,
+    val frequency: String,
+    @SerialName("next_payment_date") val nextPaymentDate: String,
+    @SerialName("category_id") val categoryId: Int? = null
+)
+
+@Serializable
+data class StatsResponse(
+    @SerialName("total_balance_by_currency") val totalBalance: Map<String, Double>,
+    @SerialName("period_by_currency") val periodStats: Map<String, PeriodStats> = emptyMap(),
+    @SerialName("by_category") val byCategory: List<CategoryStat> = emptyList(),
+    @SerialName("upcoming_payments") val upcomingPayments: List<UpcomingPayment> = emptyList()
+)
+
+@Serializable
+data class PeriodStats(
+    @SerialName("total_income") val totalIncome: Double,
+    @SerialName("total_expense") val totalExpense: Double,
+    val balance: Double
+)
+
+@Serializable
+data class CategoryStat(
+    @SerialName("category_id") val categoryId: Int?,
+    @SerialName("category_name") val categoryName: String,
+    val amount: Double,
+    val type: String,
+    val currency: String
+)
+
+@Serializable
+data class UpcomingPayment(
+    val id: String,
+    val name: String,
+    val amount: Double,
+    val currency: String,
+    @SerialName("due_date") val dueDate: String,
+    val type: String // "debt" or "planned_payment"
+)

app/src/main/java/com/example/budget/network/SessionManager.kt

@@ -0,0 +1,28 @@
+package com.example.budget.network
+
+import android.content.Context
+import android.content.SharedPreferences
+
+class SessionManager(context: Context) {
+    private val prefs: SharedPreferences = context.getSharedPreferences("budget_prefs", Context.MODE_PRIVATE)
+
+    companion object {
+        private const val AUTH_TOKEN = "auth_token"
+    }
+
+    fun saveAuthToken(token: String) {
+        prefs.edit().putString(AUTH_TOKEN, token).apply()
+    }
+
+    fun getAuthToken(): String? {
+        return prefs.getString(AUTH_TOKEN, null)
+    }
+
+    fun clearSession() {
+        prefs.edit().remove(AUTH_TOKEN).apply()
+    }
+
+    fun hasToken(): Boolean {
+        return getAuthToken() != null
+    }
+}

app/src/main/java/com/example/budget/ui/auth/AuthScreen.kt

@@ -0,0 +1,76 @@
+package com.example.budget.ui.auth
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+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.lifecycle.viewmodel.compose.viewModel
+
+@Composable
+fun AuthScreen(
+    onLoginSuccess: () -> Unit,
+    viewModel: AuthViewModel = viewModel()
+) {
+    var telegramId by remember { mutableStateOf("") }
+    var password by remember { mutableStateOf("") }
+    val authState by viewModel.authState.collectAsState()
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(16.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        verticalArrangement = Arrangement.Center
+    ) {
+        Text(text = "Авторизация", style = MaterialTheme.typography.headlineMedium)
+        Spacer(modifier = Modifier.height(32.dp))
+
+        OutlinedTextField(
+            value = telegramId,
+            onValueChange = { telegramId = it },
+            label = { Text("Telegram ID") },
+            modifier = Modifier.fillMaxWidth()
+        )
+
+        Spacer(modifier = Modifier.height(16.dp))
+
+        OutlinedTextField(
+            value = password,
+            onValueChange = { password = it },
+            label = { Text("Пароль") },
+            visualTransformation = PasswordVisualTransformation(),
+            modifier = Modifier.fillMaxWidth()
+        )
+
+        Spacer(modifier = Modifier.height(24.dp))
+
+        if (authState is AuthState.Loading) {
+            CircularProgressIndicator()
+        } else {
+            Button(
+                onClick = { viewModel.login(telegramId, password) },
+                modifier = Modifier.fillMaxWidth(),
+                enabled = telegramId.isNotBlank() && password.isNotBlank()
+            ) {
+                Text("Войти")
+            }
+        }
+
+        if (authState is AuthState.Error) {
+            Spacer(modifier = Modifier.height(16.dp))
+            Text(
+                text = (authState as AuthState.Error).message,
+                color = MaterialTheme.colorScheme.error
+            )
+        }
+
+        LaunchedEffect(authState) {
+            if (authState is AuthState.Success) {
+                onLoginSuccess()
+            }
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/auth/AuthViewModel.kt

@@ -0,0 +1,43 @@
+package com.example.budget.ui.auth
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.budget.network.ApiClient
+import com.example.budget.network.LoginRequest
+import com.example.budget.network.SessionManager
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.launch
+
+sealed class AuthState {
+    object Idle : AuthState()
+    object Loading : AuthState()
+    data class Success(val token: String) : AuthState()
+    data class Error(val message: String) : AuthState()
+}
+
+class AuthViewModel : ViewModel() {
+
+    private val _authState = MutableStateFlow<AuthState>(AuthState.Idle)
+    val authState: StateFlow<AuthState> = _authState
+
+    // SessionManager будет инжектироваться через Hilt в будущем
+    private var sessionManager: SessionManager? = null
+
+    fun init(manager: SessionManager) {
+        sessionManager = manager
+    }
+
+    fun login(telegramId: String, password: String) {
+        viewModelScope.launch {
+            _authState.value = AuthState.Loading
+            try {
+                val response = ApiClient.apiService.login(LoginRequest(telegramId, password))
+                sessionManager?.saveAuthToken(response.token)
+                _authState.value = AuthState.Success(response.token)
+            } catch (e: Exception) {
+                _authState.value = AuthState.Error(e.message ?: "Ошибка авторизации")
+            }
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/main/MainScreen.kt

@@ -0,0 +1,118 @@
+package com.example.budget.ui.main
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Add
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+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 com.example.budget.network.TransactionResponse
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MainScreen(
+    onAddTransaction: () -> Unit,
+    onEditTransaction: (Int) -> Unit,
+    viewModel: MainViewModel = viewModel()
+) {
+    val state by viewModel.state.collectAsState()
+
+    LaunchedEffect(Unit) {
+        viewModel.loadData()
+    }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(title = { Text("Мой Бюджет") })
+        },
+        floatingActionButton = {
+            FloatingActionButton(onClick = onAddTransaction) {
+                Icon(Icons.Default.Add, contentDescription = "Добавить транзакцию")
+            }
+        }
+    ) { padding ->
+        Column(modifier = Modifier.padding(padding)) {
+            when (val currentState = state) {
+                is MainState.Loading -> {
+                    Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                        CircularProgressIndicator()
+                    }
+                }
+                is MainState.Success -> {
+                    BalanceHeader(currentState.stats.totalBalance)
+                    TransactionList(currentState.transactions, onEditTransaction)
+                }
+                is MainState.Error -> {
+                    Text("Ошибка: ${currentState.message}", color = Color.Red, modifier = Modifier.padding(16.dp))
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun BalanceHeader(balances: Map<String, Double>) {
+    Card(
+        modifier = Modifier
+            .fillMaxWidth()
+            .padding(16.dp),
+        colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.primaryContainer)
+    ) {
+        Column(modifier = Modifier.padding(16.dp)) {
+            Text("Общий баланс:", style = MaterialTheme.typography.titleMedium)
+            balances.forEach { (currency, amount) ->
+                Text(
+                    text = String.format("%,.2f %s", amount, currency),
+                    style = MaterialTheme.typography.headlineMedium,
+                    fontWeight = FontWeight.Bold
+                )
+            }
+        }
+    }
+}
+
+@Composable
+fun TransactionList(transactions: List<TransactionResponse>, onEditTransaction: (Int) -> Unit) {
+    LazyColumn(modifier = Modifier.fillMaxSize()) {
+        items(transactions) { transaction ->
+            TransactionItem(transaction) {
+                onEditTransaction(transaction.id)
+            }
+            HorizontalDivider(modifier = Modifier.padding(horizontal = 16.dp), thickness = 0.5.dp)
+        }
+    }
+}
+
+@Composable
+fun TransactionItem(transaction: TransactionResponse, onClick: () -> Unit) {
+    Row(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(16.dp),
+        horizontalArrangement = Arrangement.SpaceBetween,
+        verticalAlignment = Alignment.CenterVertically
+    ) {
+        Column {
+            Text(text = transaction.categoryName ?: "Без категории", fontWeight = FontWeight.SemiBold)
+            Text(text = transaction.date, style = MaterialTheme.typography.bodySmall)
+        }
+        val color = if (transaction.type == "income") Color(0xFF4CAF50) else Color(0xFFE91E63)
+        val prefix = if (transaction.type == "income") "+" else "-"
+        Text(
+            text = String.format("%s%,.2f %s", prefix, transaction.amount, transaction.currency),
+            color = color,
+            fontWeight = FontWeight.Bold,
+            fontSize = 18.sp
+        )
+    }
+}

app/src/main/java/com/example/budget/ui/main/MainViewModel.kt

@@ -0,0 +1,36 @@
+package com.example.budget.ui.main
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.budget.network.ApiClient
+import com.example.budget.network.TransactionResponse
+import com.example.budget.network.StatsResponse
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.launch
+
+sealed class MainState {
+    object Loading : MainState()
+    data class Success(val transactions: List<TransactionResponse>, val stats: StatsResponse) : MainState()
+    data class Error(val message: String) : MainState()
+}
+
+class MainViewModel : ViewModel() {
+
+    private val _state = MutableStateFlow<MainState>(MainState.Loading)
+    val state: StateFlow<MainState> = _state
+
+    fun loadData() {
+        viewModelScope.launch {
+            _state.value = MainState.Loading
+            try {
+                // Токен добавляется автоматически через ApiClient.authInterceptor
+                val transactions = ApiClient.apiService.getTransactions()
+                val stats = ApiClient.apiService.getStats()
+                _state.value = MainState.Success(transactions, stats)
+            } catch (e: Exception) {
+                _state.value = MainState.Error(e.message ?: "Ошибка загрузки данных")
+            }
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/planning/PlanningScreen.kt

@@ -0,0 +1,129 @@
+package com.example.budget.ui.planning
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+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 com.example.budget.network.DebtResponse
+import com.example.budget.network.PlannedPaymentResponse
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun PlanningScreen(viewModel: PlanningViewModel = viewModel()) {
+    val state by viewModel.state.collectAsState()
+    var selectedTab by remember { mutableIntStateOf(0) }
+
+    LaunchedEffect(Unit) {
+        viewModel.loadData()
+    }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(title = { Text("Планирование") })
+        }
+    ) { padding ->
+        Column(modifier = Modifier.padding(padding)) {
+            TabRow(selectedTabIndex = selectedTab) {
+                Tab(selected = selectedTab == 0, onClick = { selectedTab = 0 }) {
+                    Text("Долги", modifier = Modifier.padding(16.dp))
+                }
+                Tab(selected = selectedTab == 1, onClick = { selectedTab = 1 }) {
+                    Text("Платежи", modifier = Modifier.padding(16.dp))
+                }
+            }
+
+            when (val s = state) {
+                is PlanningState.Loading -> {
+                    Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                        CircularProgressIndicator()
+                    }
+                }
+                is PlanningState.Error -> {
+                    Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                        Text("Ошибка: ${s.message}", color = MaterialTheme.colorScheme.error)
+                    }
+                }
+                is PlanningState.Success -> {
+                    if (selectedTab == 0) {
+                        DebtList(s.debts)
+                    } else {
+                        PlannedPaymentList(s.plannedPayments)
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun DebtList(debts: List<DebtResponse>) {
+    if (debts.isEmpty()) {
+        Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+            Text("Нет долгов")
+        }
+    } else {
+        LazyColumn(contentPadding = PaddingValues(16.dp), verticalArrangement = Arrangement.spacedBy(8.dp)) {
+            items(debts) { debt ->
+                DebtItem(debt)
+            }
+        }
+    }
+}
+
+@Composable
+fun DebtItem(debt: DebtResponse) {
+    Card(modifier = Modifier.fillMaxWidth()) {
+        Column(modifier = Modifier.padding(16.dp)) {
+            Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceBetween) {
+                Text(debt.name, fontWeight = FontWeight.Bold, fontSize = 18.sp)
+                Text(
+                    "${debt.amount} ${debt.currency}",
+                    fontWeight = FontWeight.Bold,
+                    color = if (debt.type == "credit") Color(0xFF4CAF50) else Color(0xFFE91E63)
+                )
+            }
+            Text("Тип: ${if (debt.type == "credit") "Мне должны" else "Я должен"}")
+            debt.dueDate?.let { Text("Срок: $it") }
+            if (debt.isPaid) {
+                Text("Оплачено", color = Color(0xFF4CAF50), fontWeight = FontWeight.Bold)
+            }
+        }
+    }
+}
+
+@Composable
+fun PlannedPaymentList(payments: List<PlannedPaymentResponse>) {
+    if (payments.isEmpty()) {
+        Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+            Text("Нет плановых платежей")
+        }
+    } else {
+        LazyColumn(contentPadding = PaddingValues(16.dp), verticalArrangement = Arrangement.spacedBy(8.dp)) {
+            items(payments) { payment ->
+                PlannedPaymentItem(payment)
+            }
+        }
+    }
+}
+
+@Composable
+fun PlannedPaymentItem(payment: PlannedPaymentResponse) {
+    Card(modifier = Modifier.fillMaxWidth()) {
+        Column(modifier = Modifier.padding(16.dp)) {
+            Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.SpaceBetween) {
+                Text(payment.name, fontWeight = FontWeight.Bold, fontSize = 18.sp)
+                Text("${payment.amount} ${payment.currency}", fontWeight = FontWeight.Bold)
+            }
+            Text("Частота: ${payment.frequency}")
+            Text("След. платеж: ${payment.nextPaymentDate}")
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/planning/PlanningViewModel.kt

@@ -0,0 +1,35 @@
+package com.example.budget.ui.planning
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.budget.network.ApiClient
+import com.example.budget.network.DebtResponse
+import com.example.budget.network.PlannedPaymentResponse
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.launch
+
+sealed class PlanningState {
+    object Loading : PlanningState()
+    data class Success(val debts: List<DebtResponse>, val plannedPayments: List<PlannedPaymentResponse>) : PlanningState()
+    data class Error(val message: String) : PlanningState()
+}
+
+class PlanningViewModel : ViewModel() {
+
+    private val _state = MutableStateFlow<PlanningState>(PlanningState.Loading)
+    val state: StateFlow<PlanningState> = _state
+
+    fun loadData() {
+        viewModelScope.launch {
+            _state.value = PlanningState.Loading
+            try {
+                val debts = ApiClient.apiService.getDebts()
+                val plannedPayments = ApiClient.apiService.getPlannedPayments()
+                _state.value = PlanningState.Success(debts, plannedPayments)
+            } catch (e: Exception) {
+                _state.value = PlanningState.Error(e.message ?: "Ошибка загрузки данных")
+            }
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/stats/StatsScreen.kt

@@ -0,0 +1,161 @@
+package com.example.budget.ui.stats
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.example.budget.network.CategoryStat
+import com.example.budget.network.UpcomingPayment
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun StatsScreen(viewModel: StatsViewModel = viewModel()) {
+    val state by viewModel.state.collectAsState()
+
+    LaunchedEffect(Unit) {
+        viewModel.loadStats()
+    }
+
+    Scaffold(
+        topBar = { TopAppBar(title = { Text("Анализ") }) }
+    ) { padding ->
+        when (val s = state) {
+            is StatsState.Loading -> {
+                Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                    CircularProgressIndicator()
+                }
+            }
+            is StatsState.Error -> {
+                Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                    Column(horizontalAlignment = Alignment.CenterHorizontally) {
+                        Text("Ошибка: ${s.message}", color = MaterialTheme.colorScheme.error)
+                        Button(onClick = { viewModel.loadStats() }) {
+                            Text("Повторить")
+                        }
+                    }
+                }
+            }
+            is StatsState.Success -> {
+                LazyColumn(
+                    modifier = Modifier
+                        .padding(padding)
+                        .fillMaxSize(),
+                    contentPadding = PaddingValues(16.dp),
+                    verticalArrangement = Arrangement.spacedBy(16.dp)
+                ) {
+                    item {
+                        Text("Расходы по категориям", style = MaterialTheme.typography.titleLarge)
+                    }
+                    
+                    val expenses = s.stats.byCategory.filter { it.type == "expense" }
+                    if (expenses.isEmpty()) {
+                        item { 
+                            Card(
+                                modifier = Modifier.fillMaxWidth(),
+                                colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceVariant)
+                            ) {
+                                Text(
+                                    "Нет данных о расходах за этот месяц", 
+                                    modifier = Modifier.padding(16.dp),
+                                    style = MaterialTheme.typography.bodyMedium
+                                )
+                            }
+                        }
+                    } else {
+                        items(expenses) { stat ->
+                            CategoryStatItem(stat)
+                        }
+                    }
+
+                    item {
+                        Spacer(modifier = Modifier.height(16.dp))
+                        Text("Ближайшие платежи", style = MaterialTheme.typography.titleLarge)
+                    }
+
+                    if (s.stats.upcomingPayments.isEmpty()) {
+                        item { 
+                            Card(
+                                modifier = Modifier.fillMaxWidth(),
+                                colors = CardDefaults.cardColors(containerColor = MaterialTheme.colorScheme.surfaceVariant)
+                            ) {
+                                Text(
+                                    "Нет запланированных платежей",
+                                    modifier = Modifier.padding(16.dp),
+                                    style = MaterialTheme.typography.bodyMedium
+                                )
+                            }
+                        }
+                    } else {
+                        items(s.stats.upcomingPayments) { payment ->
+                            UpcomingPaymentItem(payment)
+                        }
+                    }
+                    
+                    item {
+                        Button(
+                            onClick = { viewModel.loadStats() },
+                            modifier = Modifier.fillMaxWidth().padding(vertical = 16.dp)
+                        ) {
+                            Text("Обновить")
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun CategoryStatItem(stat: CategoryStat) {
+    Card(modifier = Modifier.fillMaxWidth()) {
+        Row(
+            modifier = Modifier.padding(16.dp),
+            horizontalArrangement = Arrangement.SpaceBetween,
+            verticalAlignment = Alignment.CenterVertically
+        ) {
+            Text(stat.categoryName, fontWeight = FontWeight.Medium)
+            Text(
+                "${String.format("%,.2f", stat.amount)} ${stat.currency}",
+                color = Color(0xFFE91E63),
+                fontWeight = FontWeight.Bold
+            )
+        }
+    }
+}
+
+@Composable
+fun UpcomingPaymentItem(payment: UpcomingPayment) {
+    Card(
+        modifier = Modifier.fillMaxWidth(),
+        colors = CardDefaults.cardColors(
+            containerColor = if (payment.type == "debt") 
+                MaterialTheme.colorScheme.secondaryContainer 
+            else 
+                MaterialTheme.colorScheme.tertiaryContainer
+        )
+    ) {
+        Column(modifier = Modifier.padding(16.dp)) {
+            Row(
+                modifier = Modifier.fillMaxWidth(),
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                Text(payment.name, fontWeight = FontWeight.Bold)
+                Text(
+                    "${String.format("%,.2f", payment.amount)} ${payment.currency}",
+                    fontWeight = FontWeight.Bold
+                )
+            }
+            Text(
+                "Дата: ${payment.dueDate} • ${if (payment.type == "debt") "Долг" else "План"}",
+                style = MaterialTheme.typography.bodySmall
+            )
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/stats/StatsViewModel.kt

@@ -0,0 +1,46 @@
+package com.example.budget.ui.stats
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.budget.network.ApiClient
+import com.example.budget.network.StatsResponse
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.launch
+import java.text.SimpleDateFormat
+import java.util.*
+
+sealed class StatsState {
+    object Loading : StatsState()
+    data class Success(val stats: StatsResponse) : StatsState()
+    data class Error(val message: String) : StatsState()
+}
+
+class StatsViewModel : ViewModel() {
+
+    private val _state = MutableStateFlow<StatsState>(StatsState.Loading)
+    val state: StateFlow<StatsState> = _state
+
+    fun loadStats() {
+        viewModelScope.launch {
+            _state.value = StatsState.Loading
+            try {
+                val calendar = Calendar.getInstance()
+                val sdf = SimpleDateFormat("yyyy-MM-dd", Locale.getDefault())
+                
+                // First day of current month
+                calendar.set(Calendar.DAY_OF_MONTH, 1)
+                val startDate = sdf.format(calendar.time)
+                
+                // Last day of current month
+                calendar.set(Calendar.DAY_OF_MONTH, calendar.getActualMaximum(Calendar.DAY_OF_MONTH))
+                val endDate = sdf.format(calendar.time)
+
+                val stats = ApiClient.apiService.getStats(startDate, endDate)
+                _state.value = StatsState.Success(stats)
+            } catch (e: Exception) {
+                _state.value = StatsState.Error(e.message ?: "Ошибка загрузки статистики")
+            }
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/transaction/AddEditTransactionScreen.kt

@@ -0,0 +1,203 @@
+package com.example.budget.ui.transaction
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.ArrowBack
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import java.text.SimpleDateFormat
+import java.util.*
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun AddEditTransactionScreen(
+    transactionId: Int? = null,
+    onNavigateBack: () -> Unit,
+    viewModel: AddEditTransactionViewModel = viewModel()
+) {
+    val state by viewModel.state.collectAsState()
+    val categories by viewModel.categories.collectAsState()
+    val wallets by viewModel.wallets.collectAsState()
+    val existingTransaction by viewModel.existingTransaction.collectAsState()
+
+    var amount by remember { mutableStateOf("") }
+    var type by remember { mutableStateOf("expense") }
+    var selectedCategoryId by remember { mutableStateOf<Int?>(null) }
+    var selectedWalletId by remember { mutableStateOf<Int?>(null) }
+    var comment by remember { mutableStateOf("") }
+    var date by remember { mutableStateOf(SimpleDateFormat("yyyy-MM-dd", Locale.getDefault()).format(Date())) }
+
+    var categoryExpanded by remember { mutableStateOf(false) }
+    var walletExpanded by remember { mutableStateOf(false) }
+
+    LaunchedEffect(transactionId) {
+        if (transactionId != null) {
+            viewModel.loadTransaction(transactionId)
+        }
+    }
+
+    LaunchedEffect(existingTransaction) {
+        existingTransaction?.let {
+            amount = it.amount.toString()
+            type = it.type
+            selectedCategoryId = it.categoryId
+            selectedWalletId = it.walletId
+            comment = it.comment ?: ""
+            date = it.date
+        }
+    }
+
+    Scaffold(
+        topBar = {
+            TopAppBar(
+                title = { Text(if (transactionId == null) "Новая транзакция" else "Редактирование") },
+                navigationIcon = {
+                    IconButton(onClick = onNavigateBack) {
+                        Icon(Icons.Default.ArrowBack, contentDescription = "Назад")
+                    }
+                },
+                actions = {
+                    if (transactionId != null) {
+                        IconButton(onClick = { viewModel.deleteTransaction(transactionId) }) {
+                            Icon(Icons.Default.Delete, contentDescription = "Удалить")
+                        }
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        Column(
+            modifier = Modifier
+                .padding(padding)
+                .padding(16.dp)
+                .fillMaxSize(),
+            verticalArrangement = Arrangement.spacedBy(16.dp)
+        ) {
+            // Type Toggle
+            Row(modifier = Modifier.fillMaxWidth(), horizontalArrangement = Arrangement.Center) {
+                FilterChip(
+                    selected = type == "expense",
+                    onClick = { type = "expense" },
+                    label = { Text("Расход") }
+                )
+                Spacer(modifier = Modifier.width(8.dp))
+                FilterChip(
+                    selected = type == "income",
+                    onClick = { type = "income" },
+                    label = { Text("Доход") }
+                )
+            }
+
+            OutlinedTextField(
+                value = amount,
+                onValueChange = { if (it.isEmpty() || it.toDoubleOrNull() != null) amount = it },
+                label = { Text("Сумма") },
+                keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Decimal),
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            // Category Dropdown
+            ExposedDropdownMenuBox(
+                expanded = categoryExpanded,
+                onExpandedChange = { categoryExpanded = !categoryExpanded }
+            ) {
+                OutlinedTextField(
+                    value = categories.find { it.id == selectedCategoryId }?.name ?: "Выберите категорию",
+                    onValueChange = {},
+                    readOnly = true,
+                    label = { Text("Категория") },
+                    trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = categoryExpanded) },
+                    modifier = Modifier.menuAnchor().fillMaxWidth()
+                )
+                ExposedDropdownMenu(
+                    expanded = categoryExpanded,
+                    onDismissRequest = { categoryExpanded = false }
+                ) {
+                    categories.filter { it.type == type }.forEach { category ->
+                        DropdownMenuItem(
+                            text = { Text(category.name) },
+                            onClick = {
+                                selectedCategoryId = category.id
+                                categoryExpanded = false
+                            }
+                        )
+                    }
+                }
+            }
+
+            // Wallet Dropdown
+            ExposedDropdownMenuBox(
+                expanded = walletExpanded,
+                onExpandedChange = { walletExpanded = !walletExpanded }
+            ) {
+                OutlinedTextField(
+                    value = wallets.find { it.id == selectedWalletId }?.name ?: "Выберите кошелек",
+                    onValueChange = {},
+                    readOnly = true,
+                    label = { Text("Кошелек") },
+                    trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = walletExpanded) },
+                    modifier = Modifier.menuAnchor().fillMaxWidth()
+                )
+                ExposedDropdownMenu(
+                    expanded = walletExpanded,
+                    onDismissRequest = { walletExpanded = false }
+                ) {
+                    wallets.forEach { wallet ->
+                        DropdownMenuItem(
+                            text = { Text("${wallet.name} (${wallet.currency})") },
+                            onClick = {
+                                selectedWalletId = wallet.id
+                                walletExpanded = false
+                            }
+                        )
+                    }
+                }
+            }
+
+            OutlinedTextField(
+                value = comment,
+                onValueChange = { comment = it },
+                label = { Text("Комментарий") },
+                modifier = Modifier.fillMaxWidth()
+            )
+
+            Button(
+                onClick = {
+                    viewModel.saveTransaction(
+                        id = transactionId,
+                        amount = amount.toDoubleOrNull() ?: 0.0,
+                        type = type,
+                        categoryId = selectedCategoryId,
+                        walletId = selectedWalletId,
+                        comment = comment,
+                        date = date
+                    )
+                },
+                modifier = Modifier.fillMaxWidth(),
+                enabled = amount.isNotBlank() && state !is AddEditState.Loading
+            ) {
+                Text(if (state is AddEditState.Loading) "Сохранение..." else "Сохранить")
+            }
+
+            if (state is AddEditState.Error) {
+                Text(
+                    text = (state as AddEditState.Error).message,
+                    color = MaterialTheme.colorScheme.error
+                )
+            }
+
+            LaunchedEffect(state) {
+                if (state is AddEditState.Success) {
+                    onNavigateBack()
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/example/budget/ui/transaction/AddEditTransactionViewModel.kt

@@ -0,0 +1,115 @@
+package com.example.budget.ui.transaction
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.budget.network.*
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.launch
+import java.text.SimpleDateFormat
+import java.util.*
+
+sealed class AddEditState {
+    object Idle : AddEditState()
+    object Loading : AddEditState()
+    object Success : AddEditState()
+    data class Error(val message: String) : AddEditState()
+}
+
+class AddEditTransactionViewModel : ViewModel() {
+
+    private val _state = MutableStateFlow<AddEditState>(AddEditState.Idle)
+    val state: StateFlow<AddEditState> = _state
+
+    private val _categories = MutableStateFlow<List<CategoryResponse>>(emptyList())
+    val categories: StateFlow<List<CategoryResponse>> = _categories
+
+    private val _wallets = MutableStateFlow<List<WalletResponse>>(emptyList())
+    val wallets: StateFlow<List<WalletResponse>> = _wallets
+    
+    private val _existingTransaction = MutableStateFlow<TransactionResponse?>(null)
+    val existingTransaction: StateFlow<TransactionResponse?> = _existingTransaction
+
+    init {
+        loadMetadata()
+    }
+
+    private fun loadMetadata() {
+        viewModelScope.launch {
+            try {
+                _categories.value = ApiClient.apiService.getCategories()
+                _wallets.value = ApiClient.apiService.getWallets()
+            } catch (e: Exception) {
+                // Handle metadata load error
+            }
+        }
+    }
+
+    fun loadTransaction(id: Int) {
+        viewModelScope.launch {
+            _state.value = AddEditState.Loading
+            try {
+                val transaction = ApiClient.apiService.getTransaction(id)
+                _existingTransaction.value = transaction
+                _state.value = AddEditState.Idle
+            } catch (e: Exception) {
+                _state.value = AddEditState.Error(e.message ?: "Ошибка загрузки транзакции")
+            }
+        }
+    }
+
+    fun saveTransaction(
+        id: Int?,
+        amount: Double,
+        type: String,
+        categoryId: Int?,
+        walletId: Int?,
+        comment: String,
+        date: String
+    ) {
+        viewModelScope.launch {
+            _state.value = AddEditState.Loading
+            try {
+                if (id == null) {
+                    ApiClient.apiService.createTransaction(
+                        TransactionCreate(
+                            amount = amount,
+                            type = type,
+                            categoryId = categoryId,
+                            walletId = walletId,
+                            comment = comment,
+                            date = date
+                        )
+                    )
+                } else {
+                    ApiClient.apiService.updateTransaction(
+                        id,
+                        TransactionUpdate(
+                            amount = amount,
+                            type = type,
+                            categoryId = categoryId,
+                            walletId = walletId,
+                            comment = comment,
+                            date = date
+                        )
+                    )
+                }
+                _state.value = AddEditState.Success
+            } catch (e: Exception) {
+                _state.value = AddEditState.Error(e.message ?: "Ошибка сохранения")
+            }
+        }
+    }
+
+    fun deleteTransaction(id: Int) {
+        viewModelScope.launch {
+            _state.value = AddEditState.Loading
+            try {
+                ApiClient.apiService.deleteTransaction(id)
+                _state.value = AddEditState.Success
+            } catch (e: Exception) {
+                _state.value = AddEditState.Error(e.message ?: "Ошибка удаления")
+            }
+        }
+    }
+}

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

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+</vector>

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

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+  <g android:scaleX="2.61" android:scaleY="2.61" android:translateX="22.68" android:translateY="22.68">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M13.5,3H7C5.34,3 4,4.34 4,6v10c0,1.66 1.34,3 3,3h2v2h2v-2h2v-2H9V5h4.5C14.33,5 15,5.67 15,6.5S14.33,8 13.5,8H9v2h3.5c1.66,0 3,1.34 3,3s-1.34,3 -3,3H7v2h6.5c2.76,0 5,-2.24 5,-5s-2.24,-5 -5,-5z" />
+  </g>
+</vector>

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

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

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

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

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

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+    <color name="ic_launcher_background">#3DDC84</color>
+</resources>