android: Kotlinify push notifications module (#21881)

modules/react-native-status/android/src/main/java/im/status/ethereum/pushnotifications/ForegroundService.kt

@@ -0,0 +1,122 @@
+package im.status.ethereum.pushnotifications
+
+import android.content.Context
+import android.content.Intent
+import android.app.Service
+import android.content.pm.ServiceInfo
+import android.os.IBinder
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.provider.Settings
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import android.os.Build
+import im.status.ethereum.module.R
+
+class ForegroundService : Service() {
+    companion object {
+        private const val CHANNEL_ID = "status-service"
+    }
+
+    override fun onBind(intent: Intent?): IBinder? {
+        return null
+    }
+
+    override fun onStartCommand(i: Intent?, flags: Int, startId: Int): Int {
+        // NOTE: recent versions of Android require the service to display
+        // a sticky notification to inform the user that the service is running
+        val context = applicationContext
+        // Create the NotificationChannel, but only on API 26+ because
+        // the NotificationChannel class is new and not in the support library
+
+        // Create notification channel for Android O and above
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val notificationManager = context.getSystemService(NotificationManager::class.java)
+            val channel = NotificationChannel(
+                CHANNEL_ID,
+                context.resources.getString(R.string.status_service),
+                NotificationManager.IMPORTANCE_HIGH
+            ).apply {
+                setShowBadge(false)
+            }
+            notificationManager.createNotificationChannel(channel)
+        }
+
+        // Initialize intent and notification text based on Android version
+        val notificationIntent = createNotificationIntent(context)
+        val notificationText = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            context.resources.getString(R.string.tap_to_hide_notification)
+        } else {
+            context.resources.getString(R.string.keep_status_running)
+        }
+
+        val pendingIntent = PendingIntent.getActivity(
+            this,
+            0,
+            notificationIntent,
+            PendingIntent.FLAG_IMMUTABLE
+        )
+
+        val stopIntent = Intent(PushNotificationHelper.ACTION_TAP_STOP)
+        val stopPendingIntent = PendingIntent.getBroadcast(
+            context,
+            0,
+            stopIntent,
+            PendingIntent.FLAG_CANCEL_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+
+        val notification = NotificationCompat.Builder(context, CHANNEL_ID)
+            .setSmallIcon(R.drawable.ic_stat_notify_status)
+            .setContentTitle(context.resources.getString(R.string.background_service_opened))
+            .setContentText(notificationText)
+            .setPriority(NotificationCompat.PRIORITY_HIGH)
+            .setCategory(NotificationCompat.CATEGORY_MESSAGE)
+            .setContentIntent(pendingIntent)
+            .setNumber(0)
+            .addAction(
+                R.drawable.ic_stat_notify_status,
+                context.resources.getString(R.string.stop),
+                stopPendingIntent
+            )
+            .build()
+
+        // the id of the foreground notification MUST NOT be 0
+        if (Build.VERSION.SDK_INT >= 33) {
+            startForeground(1, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_SPECIAL_USE)
+        } else {
+            startForeground(1, notification)
+        }
+
+        return START_STICKY
+    }
+
+    private fun createNotificationIntent(context: Context): Intent {
+        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            // Create intent that takes the user to the notification channel settings
+            Intent(Settings.ACTION_CHANNEL_NOTIFICATION_SETTINGS).apply {
+                putExtra(Settings.EXTRA_APP_PACKAGE, packageName)
+                putExtra(Settings.EXTRA_CHANNEL_ID, CHANNEL_ID)
+            }
+        } else {
+            // For older versions of android, intent takes the user to the Status app
+            val packageName = context.packageName
+            val launchIntent = context.packageManager.getLaunchIntentForPackage(packageName)
+            val className = launchIntent?.component?.className
+
+            try {
+                val intentClass = Class.forName(className!!)
+                Intent(context, intentClass).apply {
+                    addCategory(Intent.CATEGORY_BROWSABLE)
+                    action = Intent.ACTION_VIEW
+                    flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TOP
+                }
+            } catch (e: ClassNotFoundException) {
+                e.printStackTrace()
+                // Return an empty intent as fallback
+                Intent()
+            }
+        }
+    }
+}