events.reducers.ts

export function reducer(state: EventsState = initialState, action: Action): EventsState {
  switch (action.type) {
    case EventsActions.UPDATE: {
      // Clone the oridinal state to be sure, not to update the object reference
      const newState = cloneDeep(state);
      newState.events = action.payload;
      return newState;
    }
    case EventsActions.RESET: {
      return cloneDeep(initialState);
    }
    default: {
      return state;
    }
  }
}

// Bunch of selectors, just to provide the particular slices of state to the components
export const eventsReducer: ActionReducer<EventsState> = reducer;
export const selectFeature = createFeatureSelector<State>('Events');
export const selectFeatureState = createSelector(selectFeature, (state: State) => state.events);
export const selectEvents = createSelector(selectFeatureState,
  (state: EventsState) => state.events.map((e) => new Event(e))
);

// Initial state for this reducer
export const initialState: EventsState = {
  events: []
};

export interface EventsState {
  events: Event[];
}

export interface State extends fromRoot.State {
  events: EventsState;
}