import 'package:redux/redux.dart';

import '../models/fireNotification.dart';
import 'actions.dart';

final Reducer<List<FireNotification>> fireNotificationReducer =
    combineReducers<List<FireNotification>>(<Reducer<List<FireNotification>>>[
  TypedReducer<List<FireNotification>, AddedFireNotificationAction>(
      _addedFireNotification),
  TypedReducer<List<FireNotification>, DeletedFireNotificationAction>(
      _deletedFireNotification),
  TypedReducer<List<FireNotification>, UpdatedFireNotificationAction>(
      _updatedFireNotification),
  TypedReducer<List<FireNotification>, DeletedAllFireNotificationAction>(
      _deletedAllFireNotifications),
  TypedReducer<List<FireNotification>, ReadedFireNotificationAction>(
      _readedFireNotification)
]);

List<FireNotification> _addedFireNotification(
    List<FireNotification> notifications, AddedFireNotificationAction action) {
  return List<FireNotification>.from(notifications)..insert(0, action.notif);
}

List<FireNotification> _deletedFireNotification(
    List<FireNotification> notifications,
    DeletedFireNotificationAction action) {
  return List<FireNotification>.from(notifications)..remove(action.notif);
}

List<FireNotification> _updatedFireNotification(
    List<FireNotification> notifications,
    UpdatedFireNotificationAction action) {
  return notifications
      .map((FireNotification notif) =>
          notif.id == action.notif.id ? action.notif : notif)
      .toList();
}

List<FireNotification> _readedFireNotification(
    List<FireNotification> notifications, ReadedFireNotificationAction action) {
  return notifications
      .map((FireNotification yourLocation) =>
          yourLocation.id == action.notif.id ? action.notif : yourLocation)
      .toList();
}

List<FireNotification> _deletedAllFireNotifications(
    List<FireNotification> notifications,
    DeletedAllFireNotificationAction action) {
  return <FireNotification>[];
}