first commit

app/.gitignore

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+/build

app/build.gradle.kts

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+plugins {
+    alias(libs.plugins.android.application)
+    alias(libs.plugins.kotlin.android)
+}
+
+android {
+    namespace = "com.example.tank"
+    compileSdk = 34
+
+    defaultConfig {
+        applicationId = "com.example.tank"
+        minSdk = 24
+        targetSdk = 34
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            isMinifyEnabled = false
+            proguardFiles(
+                getDefaultProguardFile("proguard-android-optimize.txt"),
+                "proguard-rules.pro"
+            )
+        }
+    }
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+    }
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+    buildFeatures {
+        compose = true
+        buildConfig = true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion = libs.versions.composeCompiler.get()
+    }
+}
+
+dependencies {
+
+    implementation(libs.androidx.core.ktx)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.ui)
+    implementation(libs.androidx.ui.graphics)
+    implementation(libs.androidx.ui.tooling.preview)
+    implementation(libs.androidx.material3)
+    testImplementation(libs.junit)
+    androidTestImplementation(libs.androidx.junit)
+    androidTestImplementation(libs.androidx.espresso.core)
+    androidTestImplementation(platform(libs.androidx.compose.bom))
+    androidTestImplementation(libs.androidx.ui.test.junit4)
+    debugImplementation(libs.androidx.ui.tooling)
+    debugImplementation(libs.androidx.ui.test.manifest)
+    
+    // Maps & Location
+    implementation("org.osmdroid:osmdroid-android:6.1.18")
+    implementation("com.google.android.gms:play-services-location:21.2.0")
+    
+    // Geocoding for search
+    implementation("com.google.android.gms:play-services-maps:18.2.0")
+    implementation("com.google.android.gms:play-services-places:17.0.0")
+    implementation("com.google.android.libraries.places:places:3.3.0")
+    
+    // Network
+    implementation("com.squareup.retrofit2:retrofit:2.9.0")
+    implementation("com.squareup.retrofit2:converter-gson:2.9.0")
+    implementation("com.squareup.okhttp3:logging-interceptor:4.12.0")
+    
+    // DataStore for settings
+    implementation("androidx.datastore:datastore-preferences:1.0.0")
+    
+    // Navigation
+    implementation("androidx.navigation:navigation-compose:2.7.7")
+    
+    // Add Material Icons
+    implementation(libs.androidx.material.icons)
+    
+    // Add pull-to-refresh support
+    implementation("androidx.compose.material:material:1.6.2")
+    implementation("androidx.compose.material:material-icons-core:1.6.2")
+    implementation("androidx.compose.material:material-icons-extended:1.6.2")
+    implementation("androidx.compose.material3:material3:1.2.0")
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

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

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+package com.example.tank
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+        assertEquals("com.example.tank", appContext.packageName)
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-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" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28" />
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.VIBRATE"/>
+    
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Tank"
+        android:usesCleartextTraffic="true"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:label="@string/app_name"
+            android:theme="@style/Theme.Tank">
+            <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/tank/MainActivity.kt

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+package com.example.tank
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import com.example.tank.ui.screens.MainScreen
+import com.example.tank.ui.theme.TankTheme
+
+class MainActivity : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContent {
+            TankTheme {
+                MainScreen()
+            }
+        }
+    }
+}

app/src/main/java/com/example/tank/data/SettingsDataStore.kt

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+package com.example.tank.data
+
+import android.content.Context
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.*
+import androidx.datastore.preferences.preferencesDataStore
+import com.example.tank.di.NetworkModule
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+
+private val Context.dataStore by preferencesDataStore(name = "settings")
+
+class SettingsDataStore(private val context: Context) {
+    private object PreferencesKeys {
+        val LAT_KEY = doublePreferencesKey("lat")
+        val LNG_KEY = doublePreferencesKey("lng")
+        val FUEL_TYPE_KEY = stringPreferencesKey("fuel_type")
+        val RADIUS = intPreferencesKey("radius")
+        val API_KEY = stringPreferencesKey("api_key")
+        val FAVORITE_STATIONS = stringPreferencesKey("favorite_stations")
+    }
+
+    val selectedLocation: Flow<Pair<Double, Double>> = context.dataStore.data.map { preferences ->
+        Pair(
+            preferences[PreferencesKeys.LAT_KEY] ?: 52.520008, // Default to Berlin
+            preferences[PreferencesKeys.LNG_KEY] ?: 13.404954
+        )
+    }
+
+    val selectedFuelType: Flow<String> = context.dataStore.data.map { preferences ->
+        preferences[PreferencesKeys.FUEL_TYPE_KEY] ?: "e5"
+    }
+
+    val selectedRadius = context.dataStore.data.map { preferences ->
+        preferences[PreferencesKeys.RADIUS] ?: 5 // Default to 5km
+    }
+
+    val apiKey = context.dataStore.data.map { preferences ->
+        preferences[PreferencesKeys.API_KEY] ?: NetworkModule.DEFAULT_API_KEY
+    }
+
+    val favoriteStations = context.dataStore.data.map { preferences ->
+        val favoritesString = preferences[PreferencesKeys.FAVORITE_STATIONS] ?: ""
+        if (favoritesString.isEmpty()) setOf() else favoritesString.split(",").toSet()
+    }
+
+    suspend fun saveLocation(latitude: Double, longitude: Double) {
+        context.dataStore.edit { preferences ->
+            preferences[PreferencesKeys.LAT_KEY] = latitude
+            preferences[PreferencesKeys.LNG_KEY] = longitude
+        }
+    }
+
+    suspend fun saveFuelType(fuelType: String) {
+        context.dataStore.edit { preferences ->
+            preferences[PreferencesKeys.FUEL_TYPE_KEY] = fuelType
+        }
+    }
+
+    suspend fun saveRadius(radius: Int) {
+        context.dataStore.edit { preferences ->
+            preferences[PreferencesKeys.RADIUS] = radius
+        }
+    }
+
+    suspend fun saveApiKey(apiKey: String) {
+        context.dataStore.edit { preferences ->
+            preferences[PreferencesKeys.API_KEY] = apiKey
+        }
+    }
+
+    suspend fun toggleFavorite(stationId: String) {
+        context.dataStore.edit { preferences ->
+            val currentFavorites = (preferences[PreferencesKeys.FAVORITE_STATIONS] ?: "")
+                .split(",")
+                .filter { it.isNotEmpty() }
+                .toMutableSet()
+            
+            if (currentFavorites.contains(stationId)) {
+                currentFavorites.remove(stationId)
+            } else {
+                currentFavorites.add(stationId)
+            }
+            
+            preferences[PreferencesKeys.FAVORITE_STATIONS] = currentFavorites.joinToString(",")
+        }
+    }
+} 

app/src/main/java/com/example/tank/data/api/TankerkoenigApi.kt

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+package com.example.tank.data.api
+
+import com.example.tank.data.model.StationsResponse
+import retrofit2.http.GET
+import retrofit2.http.Query
+
+interface TankerkoenigApi {
+    @GET("list.php")
+    suspend fun getStations(
+        @Query("lat") lat: Double,
+        @Query("lng") lng: Double,
+        @Query("rad") radius: Int,
+        @Query("apikey") apiKey: String,
+        @Query("type") type: String = "all"
+    ): StationsResponse
+} 

app/src/main/java/com/example/tank/data/model/Station.kt

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+package com.example.tank.data.model
+
+data class Station(
+    val id: String,
+    val name: String,
+    val brand: String,
+    val street: String,
+    val place: String,
+    val lat: Double,
+    val lng: Double,
+    val dist: Double,
+    val diesel: Double?,
+    val e5: Double?,
+    val e10: Double?,
+    val isOpen: Boolean,
+    val houseNumber: String
+)
+
+data class StationsResponse(
+    val status: String,
+    val stations: List<Station>? = null,
+    val message: String? = null,
+    val ok: Boolean = false
+) 

app/src/main/java/com/example/tank/data/repository/StationsRepository.kt

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+package com.example.tank.data.repository
+
+import com.example.tank.data.api.TankerkoenigApi
+import com.example.tank.data.model.Station
+import com.example.tank.di.NetworkModule
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import android.util.Log
+
+class StationsRepository(
+    private val api: TankerkoenigApi = NetworkModule.tankerkoenigApi
+) {
+    sealed class Result {
+        data class Success(val stations: List<Station>) : Result()
+        data class Error(val message: String) : Result()
+    }
+
+    suspend fun getStations(
+        latitude: Double,
+        longitude: Double,
+        radius: Int = 5
+    ): Result = withContext(Dispatchers.IO) {
+        try {
+            Log.d("StationsRepository", "Requesting stations for lat: $latitude, lng: $longitude, radius: $radius")
+            val response = api.getStations(
+                lat = latitude,
+                lng = longitude,
+                radius = radius,
+                apiKey = NetworkModule.getApiKey()
+            )
+            Log.d("StationsRepository", "Raw response: $response")
+            
+            if (response == null) {
+                Log.e("StationsRepository", "Received null response from API")
+                return@withContext Result.Error("Server returned no data")
+            }
+            
+            Log.d("StationsRepository", "Response status: ${response.status}, message: ${response.message}, stations: ${response.stations}")
+            
+            when {
+                response.status == "ok" && response.stations != null -> Result.Success(response.stations)
+                response.status == "ok" && response.stations == null -> {
+                    Log.e("StationsRepository", "Status OK but stations is null")
+                    Result.Error("No stations data available")
+                }
+                response.status == "error" -> {
+                    Log.e("StationsRepository", "API returned error status: ${response.message}")
+                    Result.Error(response.message ?: "Unknown API error")
+                }
+                else -> {
+                    Log.e("StationsRepository", "Unknown status: ${response.status}, message: ${response.message}")
+                    Result.Error(response.message ?: "Unknown error occurred")
+                }
+            }
+        } catch (e: Exception) {
+            Log.e("StationsRepository", "Error fetching stations", e)
+            e.printStackTrace()
+            when (e) {
+                is java.net.UnknownHostException -> Result.Error("No internet connection")
+                is retrofit2.HttpException -> {
+                    when (e.code()) {
+                        429 -> Result.Error("Too many requests. Please try again later.")
+                        401 -> Result.Error("API key is invalid or expired")
+                        else -> Result.Error("Network error (${e.code()}): ${e.message()}")
+                    }
+                }
+                is NullPointerException -> {
+                    Log.e("StationsRepository", "NullPointerException", e)
+                    Result.Error("Invalid data received from server")
+                }
+                else -> Result.Error("Error: ${e.message}")
+            }
+        }
+    }
+} 

app/src/main/java/com/example/tank/di/NetworkModule.kt

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+package com.example.tank.di
+
+import com.example.tank.BuildConfig
+import com.example.tank.data.api.TankerkoenigApi
+import okhttp3.OkHttpClient
+import okhttp3.logging.HttpLoggingInterceptor
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+
+object NetworkModule {
+    private const val BASE_URL = "https://creativecommons.tankerkoenig.de/json/"
+    const val DEFAULT_API_KEY = "9336f42d-2ebe-3a41-7100-11861d00ad04"
+    
+    private var currentApiKey: String = DEFAULT_API_KEY
+    
+    fun updateApiKey(newKey: String) {
+        currentApiKey = newKey
+    }
+    
+    fun getApiKey(): String = currentApiKey
+
+    private val okHttpClient = OkHttpClient.Builder()
+        .addInterceptor(HttpLoggingInterceptor().apply {
+            level = HttpLoggingInterceptor.Level.BODY
+        })
+        .build()
+
+    private val retrofit = Retrofit.Builder()
+        .baseUrl(BASE_URL)
+        .client(okHttpClient)
+        .addConverterFactory(GsonConverterFactory.create())
+        .build()
+
+    val tankerkoenigApi: TankerkoenigApi = retrofit.create(TankerkoenigApi::class.java)
+} 

app/src/main/java/com/example/tank/ui/screens/MainScreen.kt

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+package com.example.tank.ui.screens
+
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Settings
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.foundation.layout.padding
+import androidx.navigation.compose.NavHost
+import androidx.navigation.compose.composable
+import androidx.navigation.compose.rememberNavController
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MainScreen() {
+    val navController = rememberNavController()
+    
+    Scaffold(
+        topBar = {
+            CenterAlignedTopAppBar(
+                title = { Text("Fuel Prices") },
+                actions = {
+                    IconButton(onClick = { 
+                        navController.navigate("settings") {
+                            launchSingleTop = true
+                        }
+                    }) {
+                        Icon(Icons.Default.Settings, contentDescription = "Settings")
+                    }
+                }
+            )
+        }
+    ) { padding ->
+        NavHost(
+            navController = navController,
+            startDestination = "prices",
+            modifier = Modifier.padding(padding)
+        ) {
+            composable("prices") { PricesScreen() }
+            composable("settings") { SettingsScreen(navController = navController) }
+            composable("map") { MapScreen(navController = navController) }
+        }
+    }
+} 

app/src/main/java/com/example/tank/ui/screens/MapScreen.kt

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+package com.example.tank.ui.screens
+
+import android.content.Context
+import android.location.Geocoder
+import android.util.Log
+import androidx.compose.foundation.layout.*
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Search
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.viewinterop.AndroidView
+import androidx.navigation.NavController
+import com.example.tank.data.SettingsDataStore
+import kotlinx.coroutines.launch
+import org.osmdroid.config.Configuration
+import org.osmdroid.events.MapEventsReceiver
+import org.osmdroid.tileprovider.tilesource.TileSourceFactory
+import org.osmdroid.util.GeoPoint
+import org.osmdroid.views.MapView
+import org.osmdroid.views.overlay.MapEventsOverlay
+import org.osmdroid.views.overlay.Marker
+
+@Composable
+fun MapScreen(navController: NavController) {
+    val context = LocalContext.current
+    val settingsDataStore = remember { SettingsDataStore(context) }
+    val scope = rememberCoroutineScope()
+    
+    var selectedLocation by remember { mutableStateOf<GeoPoint?>(null) }
+    var mapView by remember { mutableStateOf<MapView?>(null) }
+    var searchQuery by remember { mutableStateOf("") }
+    var isSearching by remember { mutableStateOf(false) }
+    
+    LaunchedEffect(Unit) {
+        Configuration.getInstance().load(context, context.getSharedPreferences("osmdroid", Context.MODE_PRIVATE))
+    }
+
+    Column(modifier = Modifier.fillMaxSize()) {
+        // Search Bar
+        TextField(
+            value = searchQuery,
+            onValueChange = { searchQuery = it },
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(16.dp),
+            placeholder = { Text("Search location...") },
+            trailingIcon = {
+                if (searchQuery.isNotEmpty()) {
+                    IconButton(onClick = {
+                        scope.launch {
+                            isSearching = true
+                            try {
+                                val geocoder = Geocoder(context)
+                                // Use the new API for Android 13+ (API 33+)
+                                if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.TIRAMISU) {
+                                    geocoder.getFromLocationName(searchQuery, 1) { addresses ->
+                                        if (addresses.isNotEmpty()) {
+                                            val address = addresses[0]
+                                            val location = GeoPoint(address.latitude, address.longitude)
+                                            selectedLocation = location
+                                            mapView?.controller?.animateTo(location)
+                                            mapView?.controller?.setZoom(15.0)
+                                            
+                                            // Update marker
+                                            mapView?.overlays?.removeAll { it is Marker }
+                                            val marker = Marker(mapView)
+                                            marker.position = location
+                                            marker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_BOTTOM)
+                                            mapView?.overlays?.add(marker)
+                                            mapView?.invalidate()
+                                        }
+                                    }
+                                } else {
+                                    // Legacy approach for older Android versions
+                                    @Suppress("DEPRECATION")
+                                    val addresses = geocoder.getFromLocationName(searchQuery, 1)
+                                    if (!addresses.isNullOrEmpty()) {
+                                        val address = addresses[0]
+                                        val location = GeoPoint(address.latitude, address.longitude)
+                                        selectedLocation = location
+                                        mapView?.controller?.animateTo(location)
+                                        mapView?.controller?.setZoom(15.0)
+                                        
+                                        // Update marker
+                                        mapView?.overlays?.removeAll { it is Marker }
+                                        val marker = Marker(mapView)
+                                        marker.position = location
+                                        marker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_BOTTOM)
+                                        mapView?.overlays?.add(marker)
+                                        mapView?.invalidate()
+                                    }
+                                }
+                            } catch (e: Exception) {
+                                Log.e("MapScreen", "Error searching location", e)
+                            } finally {
+                                isSearching = false
+                            }
+                        }
+                    }) {
+                        if (isSearching) {
+                            CircularProgressIndicator(modifier = Modifier.size(24.dp))
+                        } else {
+                            Icon(Icons.Default.Search, contentDescription = "Search")
+                        }
+                    }
+                }
+            }
+        )
+
+        Box(modifier = Modifier.weight(1f)) {
+            AndroidView(
+                factory = { context ->
+                    MapView(context).apply {
+                        setTileSource(TileSourceFactory.MAPNIK)
+                        setMultiTouchControls(true) // Enable pinch-to-zoom
+                        controller.setZoom(6.0)
+                        controller.setCenter(GeoPoint(51.1657, 10.4515)) // Germany center
+                        
+                        // Configure zoom controls
+                        zoomController.setVisibility(org.osmdroid.views.CustomZoomButtonsController.Visibility.SHOW_AND_FADEOUT)
+                        
+                        // Add tap listener
+                        overlays.add(MapEventsOverlay(object : MapEventsReceiver {
+                            override fun singleTapConfirmedHelper(p: GeoPoint): Boolean {
+                                selectedLocation = p
+                                overlays.removeAll { it is Marker }
+                                
+                                val marker = Marker(this@apply)
+                                marker.position = p
+                                marker.setAnchor(Marker.ANCHOR_CENTER, Marker.ANCHOR_BOTTOM)
+                                overlays.add(marker)
+                                invalidate()
+                                return true
+                            }
+                            
+                            override fun longPressHelper(p: GeoPoint): Boolean = false
+                        }))
+                        
+                        mapView = this
+                    }
+                },
+                modifier = Modifier.fillMaxSize()
+            )
+            
+            Button(
+                onClick = {
+                    scope.launch {
+                        selectedLocation?.let {
+                            settingsDataStore.saveLocation(it.latitude, it.longitude)
+                        }
+                        // Navigate all the way back to the prices screen
+                        navController.navigate("prices") {
+                            popUpTo("prices") { inclusive = false }
+                        }
+                    }
+                },
+                modifier = Modifier
+                    .align(Alignment.BottomCenter)
+                    .padding(16.dp)
+                    .fillMaxWidth(),
+                enabled = selectedLocation != null
+            ) {
+                Text("Save and Return")
+            }
+        }
+    }
+    
+    DisposableEffect(Unit) {
+        onDispose {
+            mapView?.onDetach()
+        }
+    }
+} 

app/src/main/java/com/example/tank/ui/screens/SettingsScreen.kt

@@ -0,0 +1,210 @@
+package com.example.tank.ui.screens
+
+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.platform.LocalContext
+import androidx.compose.ui.unit.dp
+import androidx.navigation.NavController
+import androidx.navigation.compose.rememberNavController
+import com.example.tank.data.SettingsDataStore
+import com.example.tank.di.NetworkModule
+import kotlinx.coroutines.launch
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun SettingsScreen(navController: NavController) {
+    val context = LocalContext.current
+    val settingsDataStore = remember { SettingsDataStore(context) }
+    val scope = rememberCoroutineScope()
+    
+    var fuelExpanded by remember { mutableStateOf(false) }
+    var selectedFuelType by remember { mutableStateOf("") }
+    var selectedLocation by remember { mutableStateOf<Pair<Double, Double>?>(null) }
+    var radiusExpanded by remember { mutableStateOf(false) }
+    var selectedRadius by remember { mutableStateOf(5) }
+    var apiKey by remember { mutableStateOf("") }
+    
+    val fuelTypes = listOf(
+        "E5" to "Super E5",
+        "E10" to "Super E10",
+        "Diesel" to "Diesel"
+    )
+    
+    val radiusOptions = listOf(5, 10, 15, 20)
+    
+    LaunchedEffect(Unit) {
+        settingsDataStore.selectedFuelType.collect { fuelType ->
+            selectedFuelType = fuelType.uppercase()
+        }
+    }
+
+    LaunchedEffect(Unit) {
+        settingsDataStore.selectedLocation.collect { (lat, lng) ->
+            if (lat != 0.0 && lng != 0.0) {
+                selectedLocation = Pair(lat, lng)
+            }
+        }
+    }
+    
+    LaunchedEffect(Unit) {
+        settingsDataStore.selectedRadius.collect { radius ->
+            selectedRadius = radius
+        }
+    }
+    
+    LaunchedEffect(Unit) {
+        settingsDataStore.apiKey.collect { key ->
+            apiKey = key ?: NetworkModule.DEFAULT_API_KEY
+        }
+    }
+    
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .padding(16.dp),
+        horizontalAlignment = Alignment.CenterHorizontally,
+        verticalArrangement = Arrangement.spacedBy(16.dp)
+    ) {
+        Text(
+            text = "Settings",
+            style = MaterialTheme.typography.headlineMedium
+        )
+        
+        // Add API Key TextField
+        OutlinedTextField(
+            value = apiKey,
+            onValueChange = { apiKey = it },
+            label = { Text("API Key") },
+            modifier = Modifier.fillMaxWidth(),
+            singleLine = true,
+            supportingText = { Text("Leave empty to use default key") }
+        )
+        
+        // Location Selection
+        Text(
+            text = "Select Location",
+            style = MaterialTheme.typography.titleMedium
+        )
+        
+        Button(
+            onClick = { navController.navigate("map") },
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text(if (selectedLocation != null) {
+                "Selected: ${String.format("%.4f", selectedLocation!!.first)}, ${String.format("%.4f", selectedLocation!!.second)}"
+            } else {
+                "Select Location on Map"
+            })
+        }
+        
+        // Fuel Type Selection
+        Text(
+            text = "Select Fuel Type",
+            style = MaterialTheme.typography.titleMedium
+        )
+        
+        ExposedDropdownMenuBox(
+            expanded = fuelExpanded,
+            onExpandedChange = { fuelExpanded = !fuelExpanded }
+        ) {
+            TextField(
+                value = when (selectedFuelType.uppercase()) {
+                    "E5" -> "Super E5"
+                    "E10" -> "Super E10"
+                    "DIESEL" -> "Diesel"
+                    else -> ""
+                },
+                onValueChange = {},
+                readOnly = true,
+                placeholder = { Text("Select fuel type") },
+                trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = fuelExpanded) },
+                modifier = Modifier.menuAnchor()
+            )
+            
+            ExposedDropdownMenu(
+                expanded = fuelExpanded,
+                onDismissRequest = { fuelExpanded = false }
+            ) {
+                fuelTypes.forEach { (type, label) ->
+                    DropdownMenuItem(
+                        text = { Text(label) },
+                        onClick = {
+                            selectedFuelType = type
+                            fuelExpanded = false
+                            scope.launch {
+                                settingsDataStore.saveFuelType(type.lowercase())
+                            }
+                        }
+                    )
+                }
+            }
+        }
+
+        // Radius Selection
+        Text(
+            text = "Search Radius",
+            style = MaterialTheme.typography.titleMedium
+        )
+        
+        ExposedDropdownMenuBox(
+            expanded = radiusExpanded,
+            onExpandedChange = { radiusExpanded = !radiusExpanded }
+        ) {
+            TextField(
+                value = "$selectedRadius km",
+                onValueChange = {},
+                readOnly = true,
+                placeholder = { Text("Select radius") },
+                trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = radiusExpanded) },
+                modifier = Modifier.menuAnchor()
+            )
+            
+            ExposedDropdownMenu(
+                expanded = radiusExpanded,
+                onDismissRequest = { radiusExpanded = false }
+            ) {
+                radiusOptions.forEach { radius ->
+                    DropdownMenuItem(
+                        text = { Text("$radius km") },
+                        onClick = {
+                            selectedRadius = radius
+                            radiusExpanded = false
+                            scope.launch {
+                                settingsDataStore.saveRadius(radius)
+                            }
+                        }
+                    )
+                }
+            }
+        }
+
+        Spacer(modifier = Modifier.weight(1f))
+
+        Button(
+            onClick = {
+                scope.launch {
+                    selectedLocation?.let {
+                        settingsDataStore.saveLocation(it.first, it.second)
+                    }
+                    if (selectedFuelType.isNotEmpty()) {
+                        settingsDataStore.saveFuelType(selectedFuelType.lowercase())
+                    }
+                    // Save API key
+                    settingsDataStore.saveApiKey(apiKey)
+                    // Update NetworkModule
+                    NetworkModule.updateApiKey(apiKey)
+                    navController.popBackStack()
+                }
+            },
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(bottom = 16.dp),
+            enabled = selectedLocation != null && selectedFuelType.isNotEmpty()
+        ) {
+            Text("Save and Return")
+        }
+    }
+} 

app/src/main/java/com/example/tank/ui/theme/Color.kt

@@ -0,0 +1,11 @@
+package com.example.tank.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/com/example/tank/ui/theme/Theme.kt

@@ -0,0 +1,58 @@
+package com.example.tank.ui.theme
+
+import android.app.Activity
+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 TankTheme(
+    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/com/example/tank/ui/theme/Type.kt

@@ -0,0 +1,34 @@
+package com.example.tank.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/java/com/example/tank/ui/viewmodel/StationsViewModel.kt

@@ -0,0 +1,52 @@
+package com.example.tank.ui.viewmodel
+
+import android.util.Log
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.example.tank.data.model.Station
+import com.example.tank.data.repository.StationsRepository
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
+
+class StationsViewModel(
+    private val repository: StationsRepository = StationsRepository()
+) : ViewModel() {
+    private val _stations = MutableStateFlow<List<Station>>(emptyList())
+    val stations: StateFlow<List<Station>> = _stations.asStateFlow()
+
+    private val _isLoading = MutableStateFlow(false)
+    val isLoading: StateFlow<Boolean> = _isLoading.asStateFlow()
+
+    private val _error = MutableStateFlow<String?>(null)
+    val error: StateFlow<String?> = _error.asStateFlow()
+
+    fun loadStations(latitude: Double, longitude: Double, radius: Int = 5) {
+        viewModelScope.launch {
+            _isLoading.value = true
+            _error.value = null
+            try {
+                Log.d("StationsViewModel", "Loading stations for lat: $latitude, lng: $longitude, radius: $radius")
+                when (val result = repository.getStations(latitude, longitude, radius)) {
+                    is StationsRepository.Result.Success -> {
+                        Log.d("StationsViewModel", "Loaded ${result.stations.size} stations")
+                        _stations.value = result.stations
+                        _error.value = null
+                    }
+                    is StationsRepository.Result.Error -> {
+                        Log.e("StationsViewModel", "Error: ${result.message}")
+                        _stations.value = emptyList()
+                        _error.value = result.message
+                    }
+                }
+            } catch (e: Exception) {
+                Log.e("StationsViewModel", "Error loading stations", e)
+                _stations.value = emptyList()
+                _error.value = "Unexpected error: ${e.message}"
+            } finally {
+                _isLoading.value = false
+            }
+        }
+    }
+} 

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

@@ -0,0 +1,170 @@
+<?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" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

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

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

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

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

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

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

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

@@ -0,0 +1,10 @@
+<?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>
+</resources>

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

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">tank</string>
+</resources>

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

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <style name="Theme.Tank" parent="android:Theme.Material.Light.NoActionBar" />
+</resources>

app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

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

@@ -0,0 +1,17 @@
+package com.example.tank
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}

build.gradle.kts

@@ -0,0 +1,5 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    alias(libs.plugins.android.application) apply false
+    alias(libs.plugins.kotlin.android) apply false
+}

gradle.properties

@@ -0,0 +1,23 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. For more details, visit
+# https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

gradle/libs.versions.toml

@@ -0,0 +1,34 @@
+[versions]
+agp = "8.2.2"
+kotlin = "1.9.22"
+coreKtx = "1.12.0"
+junit = "4.13.2"
+junitVersion = "1.1.5"
+espressoCore = "3.5.1"
+lifecycleRuntimeKtx = "2.7.0"
+activityCompose = "1.8.2"
+composeBom = "2024.02.00"
+composeCompiler = "1.5.8"
+material-icons = "1.6.2"
+
+[libraries]
+androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
+junit = { group = "junit", name = "junit", version.ref = "junit" }
+androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
+androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
+androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
+androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
+androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
+androidx-ui = { group = "androidx.compose.ui", name = "ui" }
+androidx-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
+androidx-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
+androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
+androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
+androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
+androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
+androidx-material-icons = { group = "androidx.compose.material", name = "material-icons-extended", version.ref = "material-icons" }
+
+[plugins]
+android-application = { id = "com.android.application", version.ref = "agp" }
+kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Mon Dec 09 21:22:34 CET 2024
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

settings.gradle.kts

@@ -0,0 +1,24 @@
+pluginManagement {
+    repositories {
+        google {
+            content {
+                includeGroupByRegex("com\\.android.*")
+                includeGroupByRegex("com\\.google.*")
+                includeGroupByRegex("androidx.*")
+            }
+        }
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "tank"
+include(":app")
+