createFCMSound function

Implementation

createFCMSound(String packageName) {
  final parts = packageName.split(".");
  final notificationSoundPath =
      "android/app/src/main/kotlin/${parts[0]}/${parts[1]}/${parts[2]}/NotificationSound.kt";
  final notificationSoundFile = File(notificationSoundPath);

  final directory = notificationSoundFile.parent;
  if (!directory.existsSync()) {
    directory.createSync(recursive: true);
  }


  if (!notificationSoundFile.existsSync()) {
    notificationSoundFile.createSync();
    notificationSoundFile.writeAsStringSync('''package $packageName

import android.app.Notification
import android.app.NotificationChannel
import android.app.NotificationManager
import android.content.Context
import android.os.Build
import androidx.core.app.NotificationCompat
import android.media.AudioAttributes
import android.net.Uri

object Notifications {
    const val NOTIFICATION_ID_BACKGROUND_SERVICE = 1

    private const val CHANNEL_ID_BACKGROUND_SERVICE = "custom_notification_channel"

    fun createNotificationChannels(context: Context) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val soundUri: Uri = Uri.parse(
                "android.resource://" +
                        context.packageName +
                        "/raw/long_notification_sound"
            )

            val audioAttributes = AudioAttributes.Builder()
                .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                .setUsage(AudioAttributes.USAGE_NOTIFICATION_RINGTONE)
                .build()

            val channel = NotificationChannel(
                CHANNEL_ID_BACKGROUND_SERVICE,
                "Custom Notification Channel",
                NotificationManager.IMPORTANCE_HIGH
            )

            channel.setSound(soundUri, audioAttributes)

            val manager =
                context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
            manager.createNotificationChannel(channel)
        }
    }

    fun buildForegroundNotification(context: Context): Notification {
        return NotificationCompat
            .Builder(context, CHANNEL_ID_BACKGROUND_SERVICE)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle("Background Service")
            .setContentText("Keeps app process on foreground.")
            .build()
    }
}''');
  }
}