AeroToss: авто-обновление + foreground service + кнопка отмены

1. Авто-обновление:
- Discovery пересканируется каждые 5 секунд автоматически
- Устройства снова появляются после потери связи

2. Foreground service (Android):
- AeroTossService: уведомление + wake lock
- Разрешения: FOREGROUND_SERVICE, POST_NOTIFICATIONS, WAKE_LOCK
- Приложение работает в фоне, передача не останавливается

3. Кнопка отмены:
- HomeScreen: кнопка 'Отменить отправку' при передаче
- SendScreen: кнопка 'Отменить отправку' с отменой передачи

4. Разрешения:
- Запрос POST_NOTIFICATIONS при первом запуске (Android 13+)
- Запрос ACCESS_FINE_LOCATION

app/src/androidMain/AndroidManifest.xml

@@ -10,6 +10,10 @@
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
     <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES"
         android:usesPermissionFlags="neverForLocation" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <application
         android:allowBackup="true"
@@ -24,6 +28,10 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+        <service
+            android:name=".AeroTossService"
+            android:foregroundServiceType="dataSync"
+            android:exported="false" />
     </application>
 
 </manifest>

app/src/androidMain/kotlin/com/aerotoss/AeroTossService.kt

@@ -0,0 +1,64 @@
+package com.aerotoss
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.Service
+import android.content.Intent
+import android.content.pm.ServiceInfo
+import android.os.Build
+import android.os.IBinder
+import android.os.PowerManager
+
+class AeroTossService : Service() {
+    private var wakeLock: PowerManager.WakeLock? = null
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    override fun onCreate() {
+        super.onCreate()
+        createNotificationChannel()
+        val notification = Notification.Builder(this, CHANNEL_ID)
+            .setContentTitle("AeroToss")
+            .setContentText("Поиск устройств...")
+            .setSmallIcon(android.R.drawable.ic_menu_share)
+            .build()
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+            startForeground(NOTIFICATION_ID, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_DATA_SYNC)
+        } else {
+            @Suppress("DEPRECATION")
+            startForeground(NOTIFICATION_ID, notification)
+        }
+
+        @Suppress("DEPRECATION")
+        val pm = getSystemService(POWER_SERVICE) as PowerManager
+        @Suppress("DEPRECATION")
+        wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "AeroToss::DiscoveryLock")
+        wakeLock?.acquire(60 * 60 * 1000L)
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        return START_STICKY
+    }
+
+    override fun onDestroy() {
+        wakeLock?.release()
+        super.onDestroy()
+    }
+
+    private fun createNotificationChannel() {
+        val channel = NotificationChannel(
+            CHANNEL_ID,
+            "AeroToss Discovery",
+            NotificationManager.IMPORTANCE_LOW
+        )
+        val nm = getSystemService(NOTIFICATION_SERVICE) as NotificationManager
+        nm.createNotificationChannel(channel)
+    }
+
+    companion object {
+        const val CHANNEL_ID = "aerotoss_discovery"
+        const val NOTIFICATION_ID = 1
+    }
+}

app/src/androidMain/kotlin/com/aerotoss/MainActivity.kt

@@ -1,9 +1,14 @@
 package com.aerotoss
 
+import android.Manifest
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.core.content.ContextCompat
 import androidx.lifecycle.lifecycleScope
 import com.aerotoss.core.AeroTossManager
 import com.aerotoss.discovery.CompositeAndroidDiscovery
@@ -25,14 +30,46 @@ class MainActivity : ComponentActivity() {
         handleAndroidPickResult(uri, applicationContext)
     }
 
+    private val permissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestMultiplePermissions()
+    ) { permissions ->
+        if (permissions.values.all { it }) {
+            startApp()
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        if (manager != null) return
 
         androidFilePickerLauncher = { mimeTypes, _ ->
             filePickerLauncher.launch(mimeTypes)
         }
 
+        val neededPermissions = mutableListOf(
+            Manifest.permission.ACCESS_FINE_LOCATION,
+            Manifest.permission.ACCESS_COARSE_LOCATION,
+            Manifest.permission.CHANGE_WIFI_MULTICAST_STATE,
+        )
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            neededPermissions.add(Manifest.permission.POST_NOTIFICATIONS)
+        }
+
+        val notGranted = neededPermissions.filter {
+            ContextCompat.checkSelfPermission(this, it) != PackageManager.PERMISSION_GRANTED
+        }
+
+        if (notGranted.isNotEmpty()) {
+            permissionLauncher.launch(notGranted.toTypedArray())
+        } else {
+            startApp()
+        }
+    }
+
+    private fun startApp() {
+        if (manager != null) return
+
+        startForegroundService(Intent(this, AeroTossService::class.java))
+
         val transferManager = AndroidFileTransferManager(applicationContext)
         val wifiDirectManager = WifiDirectManager(applicationContext)
         val discoveryManager = CompositeAndroidDiscovery(wifiDirectManager)
@@ -51,5 +88,6 @@ class MainActivity : ComponentActivity() {
         super.onDestroy()
         manager?.dispose()
         manager = null
+        stopService(Intent(this, AeroTossService::class.java))
     }
 }

app/src/commonMain/kotlin/com/aerotoss/core/AeroTossManager.kt

@@ -4,6 +4,7 @@ import com.aerotoss.discovery.DiscoveryManager
 import com.aerotoss.model.Device
 import com.aerotoss.model.TransferProgress
 import com.aerotoss.transfer.TransferManager
+import kotlinx.coroutines.*
 import kotlinx.coroutines.flow.Flow
 import java.io.File
 
@@ -18,14 +19,34 @@ class AeroTossManager(
     val serverPort: Int
         get() = transfer.getServerPort()
 
+    private val scope = CoroutineScope(Dispatchers.Default + SupervisorJob())
+    private var autoScanJob: Job? = null
+
     fun start(serverPort: Int) {
         discovery.startDiscovery(serverPort)
+        startAutoScan()
+    }
+
+    private fun startAutoScan() {
+        autoScanJob?.cancel()
+        autoScanJob = scope.launch {
+            while (isActive) {
+                delay(5_000)
+                val port = transfer.getServerPort()
+                if (port > 0) {
+                    discovery.stopDiscovery()
+                    discovery.startDiscovery(port)
+                }
+            }
+        }
     }
 
     fun rescan() {
+        autoScanJob?.cancel()
         val port = transfer.getServerPort()
         discovery.stopDiscovery()
         discovery.startDiscovery(port)
+        startAutoScan()
     }
 
     suspend fun sendFile(file: File, target: Device): Flow<TransferProgress> {
@@ -38,10 +59,13 @@ class AeroTossManager(
     }
 
     fun stop() {
+        autoScanJob?.cancel()
         discovery.stopDiscovery()
     }
 
     fun dispose() {
+        autoScanJob?.cancel()
+        scope.cancel()
         discovery.dispose()
         transfer.dispose()
     }

app/src/commonMain/kotlin/com/aerotoss/ui/screens/HomeScreen.kt

@@ -10,6 +10,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.unit.dp
 import com.aerotoss.core.AeroTossManager
 import com.aerotoss.model.Device
+import com.aerotoss.model.TransferState
 import com.aerotoss.ui.components.DeviceCard
 import com.aerotoss.ui.components.TransferProgressBar
 
@@ -33,13 +34,9 @@ fun HomeScreen(
             )
         },
         floatingActionButton = {
-            Row(
+            Row(horizontalArrangement = Arrangement.spacedBy(16.dp)) {
-                horizontalArrangement = Arrangement.spacedBy(16.dp)
-            ) {
                 FloatingActionButton(
-                    onClick = {
+                    onClick = { manager.rescan() },
-                        manager.rescan()
-                    },
                     containerColor = MaterialTheme.colorScheme.tertiaryContainer
                 ) {
                     Text("Обновить", style = MaterialTheme.typography.labelLarge)
@@ -62,9 +59,18 @@ fun HomeScreen(
             if (outgoingTransfer != null) {
                 outgoingTransfer?.let { transfer ->
                     TransferProgressBar(transfer)
-                    Spacer(modifier = Modifier.height(8.dp))
+                    if (transfer.state == TransferState.TRANSFERRING) {
+                        Spacer(modifier = Modifier.height(4.dp))
+                        OutlinedButton(
+                            onClick = { manager.cancelTransfer(transfer.id) },
+                            modifier = Modifier.fillMaxWidth()
+                        ) {
+                            Text("Отменить отправку")
                         }
                     }
+                }
+                Spacer(modifier = Modifier.height(8.dp))
+            }
 
             if (devices.isEmpty()) {
                 Box(
@@ -72,19 +78,10 @@ fun HomeScreen(
                     contentAlignment = Alignment.Center
                 ) {
                     Column(horizontalAlignment = Alignment.CenterHorizontally) {
-                        Text(
+                        Text("Поиск устройств...", style = MaterialTheme.typography.bodyLarge)
-                            "Поиск устройств...",
-                            style = MaterialTheme.typography.bodyLarge
-                        )
                         Spacer(modifier = Modifier.height(16.dp))
                         CircularProgressIndicator()
                         Spacer(modifier = Modifier.height(16.dp))
-                        OutlinedButton(
-                            onClick = { manager.rescan() }
-                        ) {
-                            Text("Сканировать заново")
-                        }
-                        Spacer(modifier = Modifier.height(8.dp))
                         Text(
                             "Убедитесь, что другое устройство\nтакже запустило AeroToss\nв одной Wi-Fi сети",
                             style = MaterialTheme.typography.bodySmall,
@@ -93,27 +90,15 @@ fun HomeScreen(
                     }
                 }
             } else {
-                Row(
-                    modifier = Modifier.fillMaxWidth(),
-                    horizontalArrangement = Arrangement.SpaceBetween,
-                    verticalAlignment = Alignment.CenterVertically
-                ) {
                 Text(
                     "Найдено: ${devices.size}",
                     style = MaterialTheme.typography.titleSmall,
                     color = MaterialTheme.colorScheme.onSurfaceVariant
                 )
-                    TextButton(onClick = { manager.rescan() }) {
-                        Text("Обновить")
-                    }
-                }
                 Spacer(modifier = Modifier.height(8.dp))
                 LazyColumn {
                     items(devices, key = { it.id }) { device ->
-                        DeviceCard(
+                        DeviceCard(device = device, onClick = { onSendClick(device) })
-                            device = device,
-                            onClick = { onSendClick(device) }
-                        )
                     }
                 }
             }

app/src/commonMain/kotlin/com/aerotoss/ui/screens/SendScreen.kt

@@ -71,6 +71,18 @@ fun SendScreen(
                 when {
                     outgoingTransfer?.state == TransferState.TRANSFERRING -> {
                         outgoingTransfer?.let { TransferProgressBar(it) }
+                        Spacer(modifier = Modifier.height(8.dp))
+                        OutlinedButton(
+                            onClick = {
+                                outgoingTransfer?.let { manager.cancelTransfer(it.id) }
+                                selectedFile = null
+                                isSending = false
+                            },
+                            modifier = Modifier.fillMaxWidth(),
+                            colors = ButtonDefaults.outlinedButtonColors(contentColor = MaterialTheme.colorScheme.error)
+                        ) {
+                            Text("Отменить отправку")
+                        }
                     }
                     outgoingTransfer?.state == TransferState.COMPLETED -> {
                         Text("Отправлено!", style = MaterialTheme.typography.bodyLarge, color = MaterialTheme.colorScheme.primary)