android: listen to UUID broadcasts

android/app/src/main/java/me/kavishdevar/librepods/bluetooth/ATTManager.kt

@@ -52,13 +52,13 @@ enum class ATTCCCDHandles(val value: Int) {
 
 class ATTManager(private val adapter: BluetoothAdapter, private val device: BluetoothDevice) {
     companion object {
-        private const val TAG = "ATTManager"
-
         private const val OPCODE_READ_REQUEST: Byte = 0x0A
         private const val OPCODE_WRITE_REQUEST: Byte = 0x12
         private const val OPCODE_HANDLE_VALUE_NTF: Byte = 0x1B
     }
-
+    private val id = System.identityHashCode(this)
+    @Suppress("PrivatePropertyName")
+    private val TAG = "ATTManager[$id]"
     var socket: BluetoothSocket? = null
     private var input: InputStream? = null
     private var output: OutputStream? = null
@@ -72,16 +72,25 @@ class ATTManager(private val adapter: BluetoothAdapter, private val device: Blue
     fun connect() {
         val uuid = ParcelUuid.fromString("00000000-0000-0000-0000-000000000000")
 
-        try {
-            socket = createBluetoothSocket(adapter, device, uuid)
-        } catch (e: Exception) {
-            Log.w(TAG, "Failed to create socket")
+        if (socket == null) {
+            Log.d(TAG, "Socket doesn't exist, creating")
+            try {
+                socket = createBluetoothSocket(adapter, device, uuid)
+            } catch (e: Exception) {
+                Log.w(TAG, "Failed to create socket")
+                e.printStackTrace()
+                return
+            }
         }
-        try {
-            socket!!.connect()
-        } catch (e: Exception) {
-            Log.w(TAG, "ATT socket failed to connect")
-            return
+        if (socket?.isConnected != true) {
+            Log.d(TAG, "Connection to socket")
+            try {
+                socket!!.connect()
+            } catch (e: Exception) {
+                Log.w(TAG, "ATT socket failed to connect")
+                e.printStackTrace()
+                return
+            }
         }
         input = socket!!.inputStream
         output = socket!!.outputStream
@@ -113,6 +122,10 @@ class ATTManager(private val adapter: BluetoothAdapter, private val device: Blue
                 }
             }
         }
+        if (output != null) {
+            Log.d(TAG, "sending read req for hearing aid declaration")
+            output?.write(byteArrayOf(0x0A, 0x29, 0x00))
+        }
     }
 
     fun disconnect() {
@@ -216,11 +229,11 @@ class ATTManager(private val adapter: BluetoothAdapter, private val device: Blue
         )
 
         val constructors = BluetoothSocket::class.java.declaredConstructors
-        Log.d("ATTManager", "BluetoothSocket has ${constructors.size} constructors:")
+        Log.d(TAG, "BluetoothSocket has ${constructors.size} constructors:")
 
         constructors.forEachIndexed { index, constructor ->
             val params = constructor.parameterTypes.joinToString(", ") { it.simpleName }
-            Log.d("ATTManager", "Constructor $index: ($params)")
+            Log.d(TAG, "Constructor $index: ($params)")
         }
 
         var lastException: Exception? = null
@@ -228,7 +241,7 @@ class ATTManager(private val adapter: BluetoothAdapter, private val device: Blue
 
         for ((index, params) in constructorSpecs.withIndex()) {
             try {
-                Log.d("ATTManager", "Trying constructor signature #${index + 1}")
+                Log.d(TAG, "Trying constructor signature #${index + 1}")
                 attemptedConstructors++
 
                 val paramTypes = params.map { it::class.javaPrimitiveType ?: it::class.java }.toTypedArray()
@@ -237,13 +250,13 @@ class ATTManager(private val adapter: BluetoothAdapter, private val device: Blue
                 return constructor.newInstance(*params) as BluetoothSocket
 
             } catch (e: Exception) {
-                Log.e("ATTManager", "Constructor signature #${index + 1} failed: ${e.message}")
+                Log.e(TAG, "Constructor signature #${index + 1} failed: ${e.message}")
                 lastException = e
             }
         }
 
         val errorMessage = "Failed to create BluetoothSocket after trying $attemptedConstructors constructor signatures"
-        Log.e("ATTManager", errorMessage)
+        Log.e(TAG, errorMessage)
         throw lastException ?: IllegalStateException(errorMessage)
     }
 }

android/app/src/main/java/me/kavishdevar/librepods/presentation/viewmodel/AirPodsViewModel.kt

@@ -530,7 +530,9 @@ class AirPodsViewModel(
         }
         viewModelScope.launch(Dispatchers.IO) {
             try {
-                service.attManager?.connect()
+                if (service.attManager?.socket?.isConnected != true) {
+                    service.attManager?.connect()
+                }
                 while (service.attManager?.socket?.isConnected != true) {
                     delay(250)
                 }
@@ -545,21 +547,28 @@ class AirPodsViewModel(
         viewModelScope.launch(Dispatchers.IO) {
             val loudSoundReduction =
                 runCatching { service.attManager?.read(ATTHandles.LOUD_SOUND_REDUCTION) }.getOrNull()
+            val loudSoundReductionEnabled = loudSoundReduction?.size?.let {
+                if (it > 0) {
+                    loudSoundReduction[0].toInt() == 1
+                } else false
+            }
             val transparencyData =
                 runCatching { service.attManager?.read(ATTHandles.TRANSPARENCY) }.getOrNull()?: byteArrayOf()
-            val hearingAid =
+            val hearingAidData =
                 runCatching { service.attManager?.read(ATTHandles.HEARING_AID) }.getOrNull()?: byteArrayOf()
             _uiState.value = _uiState.value.copy(
-                loudSoundReductionEnabled = loudSoundReduction?.get(0)?.toInt() == 0x01,
+                loudSoundReductionEnabled = loudSoundReductionEnabled == true,
                 transparencyData = transparencyData,
-                hearingAidData = hearingAid
+                hearingAidData = hearingAidData
             )
         }
     }
 
     fun observeATT() {
         viewModelScope.launch(Dispatchers.IO) {
-            service.attManager?.connect()
+            if (service.attManager?.socket?.isConnected != true) {
+                service.attManager?.connect()
+            }
             while (service.attManager?.socket?.isConnected != true) {
                 delay(1000)
             }

android/app/src/main/java/me/kavishdevar/librepods/services/AirPodsService.kt

@@ -1019,7 +1019,7 @@ class AirPodsService : Service(), SharedPreferences.OnSharedPreferenceChangeList
                 )
                 // Store in SharedPreferences
                 sharedPreferences.edit {
-                    putString("airpods_name", deviceInformation.name)
+                    putString("name", deviceInformation.name)
                     putString("airpods_model_number", deviceInformation.modelNumber)
                     putString("airpods_manufacturer", deviceInformation.manufacturer)
                     putString("airpods_serial_number", deviceInformation.serialNumber)
@@ -2388,16 +2388,27 @@ class AirPodsService : Service(), SharedPreferences.OnSharedPreferenceChangeList
                 ?.getString("name", bluetoothDevice?.name)
             if (bluetoothDevice != null && !action.isNullOrEmpty()) {
                 Log.d(TAG, "Received bluetooth connection broadcast: action=$action")
+                val uuid = ParcelUuid.fromString("74ec2172-0bad-4d01-8f77-997b2be0722a")
+
                 if (BluetoothDevice.ACTION_ACL_CONNECTED == action) {
-                    val uuid = ParcelUuid.fromString("74ec2172-0bad-4d01-8f77-997b2be0722a")
-                    bluetoothDevice.fetchUuidsWithSdp()
-                    if (bluetoothDevice.uuids != null) {
-                        if (bluetoothDevice.uuids.contains(uuid)) {
-                            val intent = Intent(AirPodsNotifications.AIRPODS_CONNECTION_DETECTED)
-                            intent.putExtra("name", name)
-                            intent.putExtra("device", bluetoothDevice)
-                            context?.sendBroadcast(intent)
-                        }
+                    if (bluetoothDevice.uuids?.contains(uuid) == true) {
+                        val intent = Intent(AirPodsNotifications.AIRPODS_CONNECTION_DETECTED)
+                        intent.putExtra("name", name)
+                        intent.putExtra("device", bluetoothDevice)
+                        context?.sendBroadcast(intent)
+                    } else {
+                        bluetoothDevice.fetchUuidsWithSdp()
+                    }
+                } else if ("android.bluetooth.device.action.UUID" == action) {
+                    val savedMac = context?.getSharedPreferences("settings", MODE_PRIVATE)
+                        ?.getString("mac_address", "") ?: ""
+                    val matchedByMac = savedMac.isNotEmpty() && bluetoothDevice.address == savedMac
+                    val matchedByUuid = bluetoothDevice.uuids?.contains(uuid) == true
+                    if (matchedByUuid || matchedByMac) {
+                        val intent = Intent(AirPodsNotifications.AIRPODS_CONNECTION_DETECTED)
+                        intent.putExtra("name", name)
+                        intent.putExtra("device", bluetoothDevice)
+                        context?.sendBroadcast(intent)
                     }
                 }
             }
@@ -2421,6 +2432,32 @@ class AirPodsService : Service(), SharedPreferences.OnSharedPreferenceChangeList
             takeOver("music", manualTakeOverAfterReversed = true)
         }
 
+        val bluetoothManager = getSystemService(BluetoothManager::class.java)
+        val bluetoothAdapter = bluetoothManager.adapter
+
+        bluetoothAdapter?.bondedDevices?.forEach { device ->
+            device.fetchUuidsWithSdp()
+
+            if (device.uuids != null) {
+                // Check for the AirPods service UUID
+                val uuid = ParcelUuid.fromString("74ec2172-0bad-4d01-8f77-997b2be0722a")
+
+                if (device.uuids.contains(uuid)) {
+                    Log.d(TAG, "Found AirPods device: ${device.name} (${device.address})")
+
+                    // Connect or do whatever you need
+                    CoroutineScope(Dispatchers.IO).launch {
+                        connectToSocket(bluetoothAdapter, device)
+                    }
+                    setMetadatas(device)
+                    macAddress = device.address
+                    sharedPreferences.edit {
+                        putString("mac_address", macAddress)
+                    }
+                }
+            }
+        }
+
         return START_STICKY
     }
 
@@ -2682,8 +2719,10 @@ class AirPodsService : Service(), SharedPreferences.OnSharedPreferenceChangeList
                         BluetoothConnectionManager.setCurrentConnection(socket, device)
                         val xposedRemotePref = XposedRemotePrefProvider.create()
                         if (xposedRemotePref.getBoolean("vendor_id_hook", false)) {
-                            attManager = ATTManager(adapter, device)
-                            attManager!!.connect()
+                            if (attManager == null) {
+                                attManager = ATTManager(adapter, device)
+                                attManager!!.connect()
+                            }
                         }
 
                         // Create AirPodsInstance from stored config if available