feat: AlarmManager option for notifications

app/src/main/java/ani/dantotsu/notifications/TaskScheduler.kt

@@ -0,0 +1,48 @@
+package ani.dantotsu.notifications
+
+import android.content.Context
+import ani.dantotsu.notifications.anilist.AnilistNotificationWorker
+import ani.dantotsu.notifications.comment.CommentNotificationWorker
+import ani.dantotsu.settings.saving.PrefManager
+import ani.dantotsu.settings.saving.PrefName
+
+interface TaskScheduler {
+    fun scheduleRepeatingTask(taskType: TaskType, interval: Long)
+    fun cancelTask(taskType: TaskType)
+
+    fun cancelAllTasks() {
+        for (taskType in TaskType.entries) {
+            cancelTask(taskType)
+        }
+    }
+
+    fun scheduleAllTasks(context: Context) {
+        for (taskType in TaskType.entries) {
+            val interval = when (taskType) {
+                TaskType.COMMENT_NOTIFICATION -> CommentNotificationWorker.checkIntervals[PrefManager.getVal(
+                    PrefName.CommentNotificationInterval)]
+                TaskType.ANILIST_NOTIFICATION -> AnilistNotificationWorker.checkIntervals[PrefManager.getVal(
+                    PrefName.AnilistNotificationInterval)]
+            }
+            scheduleRepeatingTask(taskType, interval)
+        }
+    }
+
+    companion object {
+        fun create(context: Context, useAlarmManager: Boolean): TaskScheduler {
+            return if (useAlarmManager) {
+                AlarmManagerScheduler(context)
+            } else {
+                WorkManagerScheduler(context)
+            }
+        }
+    }
+    enum class TaskType {
+        COMMENT_NOTIFICATION,
+        ANILIST_NOTIFICATION
+    }
+}
+
+interface Task {
+    suspend fun execute(context: Context): Boolean
+}