Add notification support and background sync service for Android

src-tauri/Cargo.lock

@@ -461,7 +461,9 @@ dependencies = [
  "serde_json",
  "tauri",
  "tauri-build",
+ "tauri-plugin-deep-link",
  "tauri-plugin-localhost",
+ "tauri-plugin-notification",
  "tauri-plugin-shell",
  "tauri-plugin-single-instance",
  "tauri-plugin-window-state",
@@ -486,6 +488,26 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "const-random"
+version = "0.1.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87e00182fe74b066627d63b85fd550ac2998d4b0bd86bfed477a0ae4c7c71359"
+dependencies = [
+ "const-random-macro",
+]
+
+[[package]]
+name = "const-random-macro"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9d839f2a20b0aee515dc581a6172f2321f96cab76c1a38a4c584a194955390e"
+dependencies = [
+ "getrandom 0.2.17",
+ "once_cell",
+ "tiny-keccak",
+]
+
 [[package]]
 name = "convert_case"
 version = "0.4.0"
@@ -575,6 +597,12 @@ version = "0.8.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0a5c400df2834b80a4c3327b3aad3a4c4cd4de0629063962b03235697506a28"
 
+[[package]]
+name = "crunchy"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "460fbee9c2c2f33933d720630a6a0bac33ba7053db5344fac858d4b8952d77d5"
+
 [[package]]
 name = "crypto-common"
 version = "0.1.7"
@@ -761,6 +789,15 @@ dependencies = [
  "syn 2.0.114",
 ]
 
+[[package]]
+name = "dlv-list"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "442039f5147480ba31067cb00ada1adae6892028e40e45fc5de7b7df6dcc1b5f"
+dependencies = [
+ "const-random",
+]
+
 [[package]]
 name = "dpi"
 version = "0.1.2"
@@ -1385,6 +1422,12 @@ version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
+[[package]]
+name = "hashbrown"
+version = "0.14.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
+
 [[package]]
 name = "hashbrown"
 version = "0.16.1"
@@ -1921,6 +1964,18 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4"
 
+[[package]]
+name = "mac-notification-sys"
+version = "0.6.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65fd3f75411f4725061682ed91f131946e912859d0044d39c4ec0aac818d7621"
+dependencies = [
+ "cc",
+ "objc2",
+ "objc2-foundation",
+ "time",
+]
+
 [[package]]
 name = "markup5ever"
 version = "0.14.1"
@@ -2057,6 +2112,20 @@ version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72ef4a56884ca558e5ddb05a1d1e7e1bfd9a68d9ed024c21704cc98872dae1bb"
 
+[[package]]
+name = "notify-rust"
+version = "4.11.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6442248665a5aa2514e794af3b39661a8e73033b1cc5e59899e1276117ee4400"
+dependencies = [
+ "futures-lite",
+ "log",
+ "mac-notification-sys",
+ "serde",
+ "tauri-winrt-notification",
+ "zbus",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
@@ -2330,6 +2399,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "04744f49eae99ab78e0d5c0b603ab218f515ea8cfe5a456d7629ad883a3b6e7d"
 
+[[package]]
+name = "ordered-multimap"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49203cdcae0030493bad186b28da2fa25645fa276a51b6fec8010d281e02ef79"
+dependencies = [
+ "dlv-list",
+ "hashbrown 0.14.5",
+]
+
 [[package]]
 name = "ordered-stream"
 version = "0.2.0"
@@ -2587,7 +2666,7 @@ checksum = "740ebea15c5d1428f910cd1a5f52cebf8d25006245ed8ade92702f4943d91e07"
 dependencies = [
  "base64 0.22.1",
  "indexmap 2.13.0",
- "quick-xml",
+ "quick-xml 0.38.4",
  "serde",
  "time",
 ]
@@ -2717,6 +2796,15 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "quick-xml"
+version = "0.37.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "331e97a1af0bf59823e6eadffe373d7b27f485be8748f71471c662c1f269b7fb"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "quick-xml"
 version = "0.38.4"
@@ -2766,6 +2854,16 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "rand"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
+dependencies = [
+ "rand_chacha 0.9.0",
+ "rand_core 0.9.5",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.2.2"
@@ -2786,6 +2884,16 @@ dependencies = [
  "rand_core 0.6.4",
 ]
 
+[[package]]
+name = "rand_chacha"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.9.5",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.5.1"
@@ -2804,6 +2912,15 @@ dependencies = [
  "getrandom 0.2.17",
 ]
 
+[[package]]
+name = "rand_core"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "76afc826de14238e6e8c374ddcc1fa19e374fd8dd986b0d2af0d02377261d83c"
+dependencies = [
+ "getrandom 0.3.4",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.2.0"
@@ -2932,6 +3049,16 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "rust-ini"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "796e8d2b6696392a43bea58116b667fb4c29727dc5abd27d6acf338bb4f688c7"
+dependencies = [
+ "cfg-if",
+ "ordered-multimap",
+]
+
 [[package]]
 name = "rustc_version"
 version = "0.4.1"
@@ -3668,6 +3795,27 @@ dependencies = [
  "walkdir",
 ]
 
+[[package]]
+name = "tauri-plugin-deep-link"
+version = "2.4.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "444b091f24f2f6bdb4a305b54d3961f629c11861c685aceeea9a1972f89e43d5"
+dependencies = [
+ "dunce",
+ "plist",
+ "rust-ini",
+ "serde",
+ "serde_json",
+ "tauri",
+ "tauri-plugin",
+ "tauri-utils",
+ "thiserror 2.0.18",
+ "tracing",
+ "url",
+ "windows-registry",
+ "windows-result 0.3.4",
+]
+
 [[package]]
 name = "tauri-plugin-localhost"
 version = "2.3.2"
@@ -3683,6 +3831,25 @@ dependencies = [
  "tiny_http",
 ]
 
+[[package]]
+name = "tauri-plugin-notification"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "01fc2c5ff41105bd1f7242d8201fdf3efd70749b82fa013a17f2126357d194cc"
+dependencies = [
+ "log",
+ "notify-rust",
+ "rand 0.9.2",
+ "serde",
+ "serde_json",
+ "serde_repr",
+ "tauri",
+ "tauri-plugin",
+ "thiserror 2.0.18",
+ "time",
+ "url",
+]
+
 [[package]]
 name = "tauri-plugin-shell"
 version = "2.3.4"
@@ -3835,6 +4002,18 @@ dependencies = [
  "toml 0.9.11+spec-1.1.0",
 ]
 
+[[package]]
+name = "tauri-winrt-notification"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b1e66e07de489fe43a46678dd0b8df65e0c973909df1b60ba33874e297ba9b9"
+dependencies = [
+ "quick-xml 0.37.5",
+ "thiserror 2.0.18",
+ "windows",
+ "windows-version",
+]
+
 [[package]]
 name = "tempfile"
 version = "3.24.0"
@@ -3930,6 +4109,15 @@ dependencies = [
  "time-core",
 ]
 
+[[package]]
+name = "tiny-keccak"
+version = "2.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c9d3793400a45f954c52e73d068316d76b6f4e36977e3fcebb13a2721e80237"
+dependencies = [
+ "crunchy",
+]
+
 [[package]]
 name = "tiny_http"
 version = "0.12.0"
@@ -4687,6 +4875,17 @@ dependencies = [
  "windows-link 0.1.3",
 ]
 
+[[package]]
+name = "windows-registry"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b8a9ed28765efc97bbc954883f4e6796c33a06546ebafacbabee9696967499e"
+dependencies = [
+ "windows-link 0.1.3",
+ "windows-result 0.3.4",
+ "windows-strings 0.4.2",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.3.4"

src-tauri/Cargo.toml

@@ -25,6 +25,10 @@ tauri = { version = "2", features = ["devtools"] }
 tauri-plugin-localhost = "2"
 tauri-plugin-window-state = "2"
 tauri-plugin-shell = "2"
+tauri-plugin-notification = "2"
+
+[target."cfg(any(target_os = \"android\", target_os = \"ios\"))".dependencies]
+tauri-plugin-deep-link = "2"
 
 [target."cfg(not(any(target_os = \"android\", target_os = \"ios\")))".dependencies]
 tauri-plugin-single-instance = "2"

src-tauri/gen/android/app/src/main/AndroidManifest.xml

@@ -1,6 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
     <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS" />
 
     <!-- AndroidTV support -->
     <uses-feature android:name="android.software.leanback" android:required="false" />
@@ -24,6 +31,23 @@
             </intent-filter>
         </activity>
 
+        <!-- Background sync service -->
+        <service
+            android:name=".SyncService"
+            android:enabled="true"
+            android:exported="false"
+            android:foregroundServiceType="dataSync" />
+
+        <!-- Boot receiver to restart service -->
+        <receiver
+            android:name=".BootReceiver"
+            android:enabled="true"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED" />
+            </intent-filter>
+        </receiver>
+
         <provider
           android:name="androidx.core.content.FileProvider"
           android:authorities="${applicationId}.fileprovider"

src-tauri/gen/android/app/src/main/java/in/cinny/app/BootReceiver.kt

@@ -0,0 +1,18 @@
+package `in`.cinny.app
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+
+/**
+ * Receives boot completed broadcast to restart the sync service
+ * after device reboot.
+ */
+class BootReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        if (intent.action == Intent.ACTION_BOOT_COMPLETED) {
+            // Start the sync service after boot
+            SyncService.start(context)
+        }
+    }
+}

src-tauri/gen/android/app/src/main/java/in/cinny/app/MainActivity.kt

@@ -1,11 +1,48 @@
 package `in`.cinny.app
 
+import android.Manifest
+import android.content.pm.PackageManager
+import android.os.Build
 import android.os.Bundle
-import androidx.activity.enableEdgeToEdge
+import androidx.core.app.ActivityCompat
+import androidx.core.content.ContextCompat
 
+/**
+ * Main activity for Cinny. Handles permission requests and
+ * starts the background sync service for notifications.
+ */
 class MainActivity : TauriActivity() {
+
+    companion object {
+        private const val NOTIFICATION_PERMISSION_CODE = 1001
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
-    enableEdgeToEdge()
         super.onCreate(savedInstanceState)
+        requestNotificationPermission()
+        startSyncService()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        // Ensure sync service is running when app is in foreground
+        startSyncService()
+    }
+
+    private fun requestNotificationPermission() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            if (ContextCompat.checkSelfPermission(this, Manifest.permission.POST_NOTIFICATIONS) 
+                != PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(
+                    this,
+                    arrayOf(Manifest.permission.POST_NOTIFICATIONS),
+                    NOTIFICATION_PERMISSION_CODE
+                )
+            }
+        }
+    }
+
+    private fun startSyncService() {
+        SyncService.start(this)
     }
 }

src-tauri/gen/android/app/src/main/java/in/cinny/app/SyncService.kt

@@ -0,0 +1,114 @@
+package `in`.cinny.app
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.app.Service
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.os.IBinder
+import android.os.PowerManager
+import androidx.core.app.NotificationCompat
+
+/**
+ * Foreground service to keep Matrix sync connection alive in background.
+ * This service maintains a wake lock and shows a persistent notification
+ * to prevent Android from killing the app while syncing.
+ */
+class SyncService : Service() {
+
+    companion object {
+        private const val CHANNEL_ID = "cinny_sync_channel"
+        private const val NOTIFICATION_ID = 1001
+        private const val WAKE_LOCK_TAG = "Cinny:SyncWakeLock"
+
+        fun start(context: Context) {
+            val intent = Intent(context, SyncService::class.java)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                context.startForegroundService(intent)
+            } else {
+                context.startService(intent)
+            }
+        }
+
+        fun stop(context: Context) {
+            val intent = Intent(context, SyncService::class.java)
+            context.stopService(intent)
+        }
+    }
+
+    private var wakeLock: PowerManager.WakeLock? = null
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    override fun onCreate() {
+        super.onCreate()
+        createNotificationChannel()
+        acquireWakeLock()
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        val notification = createNotification()
+        startForeground(NOTIFICATION_ID, notification)
+        return START_STICKY
+    }
+
+    override fun onDestroy() {
+        releaseWakeLock()
+        super.onDestroy()
+    }
+
+    private fun createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val channel = NotificationChannel(
+                CHANNEL_ID,
+                "Matrix Sync",
+                NotificationManager.IMPORTANCE_LOW
+            ).apply {
+                description = "Keeps Cinny connected for message notifications"
+                setShowBadge(false)
+            }
+            val manager = getSystemService(NotificationManager::class.java)
+            manager.createNotificationChannel(channel)
+        }
+    }
+
+    private fun createNotification(): Notification {
+        val intent = Intent(this, MainActivity::class.java)
+        val pendingIntent = PendingIntent.getActivity(
+            this, 0, intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+
+        return NotificationCompat.Builder(this, CHANNEL_ID)
+            .setContentTitle("Cinny")
+            .setContentText("Connected to Matrix")
+            .setSmallIcon(R.mipmap.ic_launcher)
+            .setOngoing(true)
+            .setContentIntent(pendingIntent)
+            .setPriority(NotificationCompat.PRIORITY_LOW)
+            .setCategory(NotificationCompat.CATEGORY_SERVICE)
+            .build()
+    }
+
+    private fun acquireWakeLock() {
+        val powerManager = getSystemService(Context.POWER_SERVICE) as PowerManager
+        wakeLock = powerManager.newWakeLock(
+            PowerManager.PARTIAL_WAKE_LOCK,
+            WAKE_LOCK_TAG
+        ).apply {
+            acquire(10 * 60 * 1000L) // 10 minutes, will be renewed
+        }
+    }
+
+    private fun releaseWakeLock() {
+        wakeLock?.let {
+            if (it.isHeld) {
+                it.release()
+            }
+        }
+        wakeLock = null
+    }
+}

src-tauri/src/lib.rs

@@ -17,6 +17,7 @@ pub fn run() {
             .plugin(tauri_plugin_shell::init())
             .plugin(tauri_plugin_window_state::Builder::default().build())
             .plugin(tauri_plugin_single_instance::init(|_app, _args, _cwd| {}))
+            .plugin(tauri_plugin_notification::init())
     };
 
     #[cfg(any(target_os = "android", target_os = "ios"))]
@@ -24,6 +25,7 @@ pub fn run() {
         tauri::Builder::default()
             .plugin(tauri_plugin_localhost::Builder::new(port).build())
             .plugin(tauri_plugin_shell::init())
+            .plugin(tauri_plugin_notification::init())
     };
 
     builder

src-tauri/tauri.conf.json

@@ -25,6 +25,11 @@
       "csp": "script-src blob: data: filesystem: ws: wss: http: https: tauri: 'unsafe-eval' 'unsafe-inline' 'self'; img-src 'self' https: http: data: blob:"
     }
   },
+  "plugins": {
+    "notification": {
+      "sound": true
+    }
+  },
   "bundle": {
     "active": true,
     "targets": ["msi", "appimage", "deb", "rpm"],