feat: show notification and battery optimization warning

mobile/android/app/src/main/kotlin/app/alextran/immich/MainActivity.kt

@@ -17,6 +17,8 @@ import app.alextran.immich.images.LocalImageApi
 import app.alextran.immich.images.LocalImagesImpl
 import app.alextran.immich.images.RemoteImageApi
 import app.alextran.immich.images.RemoteImagesImpl
+import app.alextran.immich.permission.PermissionApi
+import app.alextran.immich.permission.PermissionApiImpl
 import app.alextran.immich.sync.NativeSyncApi
 import app.alextran.immich.sync.NativeSyncApiImpl26
 import app.alextran.immich.sync.NativeSyncApiImpl30
@@ -50,6 +52,7 @@ class MainActivity : FlutterFragmentActivity() {
 
       BackgroundWorkerFgHostApi.setUp(messenger, BackgroundWorkerApiImpl(ctx))
       ConnectivityApi.setUp(messenger, ConnectivityApiImpl(ctx))
+      PermissionApi.setUp(messenger, PermissionApiImpl(ctx))
 
       flutterEngine.plugins.add(backgroundEngineLockImpl)
       flutterEngine.plugins.add(nativeSyncApiImpl)

mobile/android/app/src/main/kotlin/app/alextran/immich/permission/PermissionApi.g.kt

@@ -0,0 +1,114 @@
+// Autogenerated from Pigeon (v26.3.4), do not edit directly.
+// See also: https://pub.dev/packages/pigeon
+@file:Suppress("UNCHECKED_CAST", "ArrayInDataClass")
+
+package app.alextran.immich.permission
+
+import android.util.Log
+import io.flutter.plugin.common.BasicMessageChannel
+import io.flutter.plugin.common.BinaryMessenger
+import io.flutter.plugin.common.EventChannel
+import io.flutter.plugin.common.MessageCodec
+import io.flutter.plugin.common.StandardMethodCodec
+import io.flutter.plugin.common.StandardMessageCodec
+import java.io.ByteArrayOutputStream
+import java.nio.ByteBuffer
+private object PermissionApiPigeonUtils {
+
+  fun wrapResult(result: Any?): List<Any?> {
+    return listOf(result)
+  }
+
+  fun wrapError(exception: Throwable): List<Any?> {
+    return if (exception is FlutterError) {
+      listOf(
+        exception.code,
+        exception.message,
+        exception.details
+      )
+    } else {
+      listOf(
+        exception.javaClass.simpleName,
+        exception.toString(),
+        "Cause: " + exception.cause + ", Stacktrace: " + Log.getStackTraceString(exception)
+      )
+    }
+  }
+}
+
+/**
+ * Error class for passing custom error details to Flutter via a thrown PlatformException.
+ * @property code The error code.
+ * @property message The error message.
+ * @property details The error details. Must be a datatype supported by the api codec.
+ */
+class FlutterError (
+  val code: String,
+  override val message: String? = null,
+  val details: Any? = null
+) : RuntimeException()
+
+enum class PermissionStatus(val raw: Int) {
+  GRANTED(0),
+  DENIED(1),
+  PERMANENTLY_DENIED(2);
+
+  companion object {
+    fun ofRaw(raw: Int): PermissionStatus? {
+      return values().firstOrNull { it.raw == raw }
+    }
+  }
+}
+private open class PermissionApiPigeonCodec : StandardMessageCodec() {
+  override fun readValueOfType(type: Byte, buffer: ByteBuffer): Any? {
+    return when (type) {
+      129.toByte() -> {
+        return (readValue(buffer) as Long?)?.let {
+          PermissionStatus.ofRaw(it.toInt())
+        }
+      }
+      else -> super.readValueOfType(type, buffer)
+    }
+  }
+  override fun writeValue(stream: ByteArrayOutputStream, value: Any?)   {
+    when (value) {
+      is PermissionStatus -> {
+        stream.write(129)
+        writeValue(stream, value.raw.toLong())
+      }
+      else -> super.writeValue(stream, value)
+    }
+  }
+}
+
+/** Generated interface from Pigeon that represents a handler of messages from Flutter. */
+interface PermissionApi {
+  fun isIgnoringBatteryOptimizations(): PermissionStatus
+
+  companion object {
+    /** The codec used by PermissionApi. */
+    val codec: MessageCodec<Any?> by lazy {
+      PermissionApiPigeonCodec()
+    }
+    /** Sets up an instance of `PermissionApi` to handle messages through the `binaryMessenger`. */
+    @JvmOverloads
+    fun setUp(binaryMessenger: BinaryMessenger, api: PermissionApi?, messageChannelSuffix: String = "") {
+      val separatedMessageChannelSuffix = if (messageChannelSuffix.isNotEmpty()) ".$messageChannelSuffix" else ""
+      run {
+        val channel = BasicMessageChannel<Any?>(binaryMessenger, "dev.flutter.pigeon.immich_mobile.PermissionApi.isIgnoringBatteryOptimizations$separatedMessageChannelSuffix", codec)
+        if (api != null) {
+          channel.setMessageHandler { _, reply ->
+            val wrapped: List<Any?> = try {
+              listOf(api.isIgnoringBatteryOptimizations())
+            } catch (exception: Throwable) {
+              PermissionApiPigeonUtils.wrapError(exception)
+            }
+            reply.reply(wrapped)
+          }
+        } else {
+          channel.setMessageHandler(null)
+        }
+      }
+    }
+  }
+}

mobile/android/app/src/main/kotlin/app/alextran/immich/permission/PermissionApiImpl.kt

@@ -0,0 +1,19 @@
+package app.alextran.immich.permission
+
+import android.content.Context
+import android.os.PowerManager
+
+class PermissionApiImpl(context: Context) : PermissionApi {
+  private val ctx: Context = context.applicationContext
+
+  private val powerManager =
+    ctx.getSystemService(Context.POWER_SERVICE) as PowerManager
+
+
+  override fun isIgnoringBatteryOptimizations(): PermissionStatus {
+    if (powerManager.isIgnoringBatteryOptimizations(ctx.packageName)) {
+      return PermissionStatus.GRANTED
+    }
+    return PermissionStatus.DENIED
+  }
+}