Move workers to foreground service context a bit more safely (#10202)

The system will crash the app if the worker that calls setForeground() finished
before the service runner be able to call Service.startForeground(). This edge
case is not handled by WorkManager and there is no way to check if the required
calls are done.

So here we suspend the worker by an arbitrary duration assuming the transition
to foreground service is done by then.

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupCreateJob.kt

@@ -17,6 +17,7 @@ import com.hippo.unifile.UniFile
 import eu.kanade.tachiyomi.data.notification.Notifications
 import eu.kanade.tachiyomi.util.system.cancelNotification
 import eu.kanade.tachiyomi.util.system.isRunning
+import eu.kanade.tachiyomi.util.system.setForegroundSafely
 import eu.kanade.tachiyomi.util.system.workManager
 import logcat.LogPriority
 import tachiyomi.core.util.system.logcat
@@ -39,19 +40,14 @@ class BackupCreateJob(private val context: Context, workerParams: WorkerParamete
 
         if (isAutoBackup && BackupRestoreJob.isRunning(context)) return Result.retry()
 
-        val backupPreferences = Injekt.get<BackupPreferences>()
-
         val uri = inputData.getString(LOCATION_URI_KEY)?.toUri()
             ?: getAutomaticBackupLocation()
             ?: return Result.failure()
 
-        val flags = inputData.getInt(BACKUP_FLAGS_KEY, BackupCreateFlags.AutomaticDefaults)
+        setForegroundSafely()
 
-        try {
-            setForeground(getForegroundInfo())
-        } catch (e: IllegalStateException) {
-            logcat(LogPriority.ERROR, e) { "Not allowed to run on foreground service" }
-        }
+        val flags = inputData.getInt(BACKUP_FLAGS_KEY, BackupCreateFlags.AutomaticDefaults)
+        val backupPreferences = Injekt.get<BackupPreferences>()
 
         return try {
             val location = BackupCreator(context).createBackup(uri, flags, isAutoBackup)

app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupRestoreJob.kt

@@ -12,6 +12,7 @@ import androidx.work.workDataOf
 import eu.kanade.tachiyomi.data.notification.Notifications
 import eu.kanade.tachiyomi.util.system.cancelNotification
 import eu.kanade.tachiyomi.util.system.isRunning
+import eu.kanade.tachiyomi.util.system.setForegroundSafely
 import eu.kanade.tachiyomi.util.system.workManager
 import kotlinx.coroutines.CancellationException
 import logcat.LogPriority
@@ -29,11 +30,7 @@ class BackupRestoreJob(private val context: Context, workerParams: WorkerParamet
             ?: return Result.failure()
         val sync = inputData.getBoolean(SYNC_KEY, false)
 
-        try {
-            setForeground(getForegroundInfo())
-        } catch (e: IllegalStateException) {
-            logcat(LogPriority.ERROR, e) { "Not allowed to run on foreground service" }
-        }
+        setForegroundSafely()
 
         return try {
             val restorer = BackupRestorer(context, notifier)