import 'package:objectid/objectid.dart';
import 'package:redux/redux.dart';

import '../models/fire_map_state.dart';
import '../models/your_location.dart';
import 'actions.dart';

final Reducer<FireMapState> fireMapReducer =
    combineReducers<FireMapState>(<Reducer<FireMapState>>[
  TypedReducer<FireMapState, ShowYourLocationMapAction>(_showYourLocationMap),
  TypedReducer<FireMapState, ShowFireNotificationMapAction>(
      _showFireNotificationMap),
  TypedReducer<FireMapState, UpdateFireMapStatsAction>(
      _updateYourLocationMapStats),
  TypedReducer<FireMapState, SubscribeAction>(_subscribeYourLocationMap),
  TypedReducer<FireMapState, SubscribeConfirmAction>(
      _subscribeConfirmYourLocationMap),
  TypedReducer<FireMapState, UnSubscribeAction>(_unsubscribeYourLocationMap),
  TypedReducer<FireMapState, EditYourLocationAction>(_editYourLocationMap),
  TypedReducer<FireMapState, EditConfirmYourLocationAction>(
      _editConfirmYourLocationMap),
  TypedReducer<FireMapState, EditCancelYourLocationAction>(
      _editCancelYourLocationMap),
  TypedReducer<FireMapState, SelectMapLayerAction>(_selectMapLayer),
  TypedReducer<FireMapState, UpdateYourLocationMapAction>(
      _updateYourLocationMap)
]);

FireMapState _updateYourLocationMapStats(
    FireMapState state, UpdateFireMapStatsAction action) {
  return state.copyWith(
      numFires: action.numFires,
      fires: action.fires,
      falsePos: action.falsePos,
      industries: action.industries);
}

FireMapState _updateYourLocationMap(
    FireMapState state, UpdateYourLocationMapAction action) {
  return state.copyWith(yourLocation: action.loc);
}

FireMapState _showYourLocationMap(
    FireMapState state, ShowYourLocationMapAction action) {
  return state.copyWith(
      status: action.loc.subscribed
          ? FireMapStatus.unsubscribe
          : FireMapStatus.view,
      yourLocation: action.loc);
}

FireMapState _showFireNotificationMap(
    FireMapState state, ShowFireNotificationMapAction action) {
  // TODO(developer): use here real location instead of notification location?
  final YourLocation pseudoLoc = YourLocation(
      id: ObjectId(),
      lat: action.notif.lat,
      lon: action.notif.lon,
      description: action.notif.description);
  return state.copyWith(
      status: FireMapStatus.viewFireNotification,
      yourLocation: pseudoLoc,
      fireNotication: action.notif);
}

FireMapState _subscribeYourLocationMap(
    FireMapState state, SubscribeAction action) {
  return state.copyWith(status: FireMapStatus.subscriptionConfirm);
}

FireMapState _subscribeConfirmYourLocationMap(
    FireMapState state, SubscribeConfirmAction action) {
  return state.copyWith(
      status: FireMapStatus.unsubscribe, yourLocation: action.loc);
}

FireMapState _unsubscribeYourLocationMap(
    FireMapState state, UnSubscribeAction action) {
  return state.copyWith(status: FireMapStatus.view, yourLocation: action.loc);
}

FireMapState _editYourLocationMap(
    FireMapState state, EditYourLocationAction action) {
  return state.copyWith(status: FireMapStatus.edit);
}

FireMapState _editConfirmYourLocationMap(
    FireMapState state, EditConfirmYourLocationAction action) {
  return state.copyWith(status: restoreStatusAfterSave(action.loc));
}

FireMapState _editCancelYourLocationMap(
    FireMapState state, EditCancelYourLocationAction action) {
  return state.copyWith(
      status: restoreStatusAfterSave(action.loc), yourLocation: action.loc);
}

FireMapStatus restoreStatusAfterSave(YourLocation loc) =>
    loc.subscribed ? FireMapStatus.unsubscribe : FireMapStatus.view;

FireMapState _selectMapLayer(FireMapState state, SelectMapLayerAction action) {
  return state.copyWith(layer: action.layer);
}