import { tassign } from 'tassign';
import { IItemTypes} from '../models/item.types';
import { IListItem } from '../models/list.item';
import { IUser } from '../models/user';
import * as appCommonActions from '../actions/app-common.actions';
import { createSelector, createFeatureSelector, ActionReducerMap } from '@ngrx/store';

import { MODULE_NAME } from '../module-name';

export interface State {
  openedModalName: string,
  initialized: boolean,
  rootItems: IListItem[],
  itemTypes: IItemTypes,
  user:IUser
}

export const initialState: State = {
  openedModalName: null,
  initialized: false,
  rootItems: [],
  itemTypes: {},
  user:null
}

export function reducer(state = initialState, action: appCommonActions.Actions ): State {
  switch (action.type) {
    case appCommonActions.INITUSERSUCCESS: {
      let a = action as appCommonActions.InitUserSuccess;
      return tassign(state, { user: a.user });
    }
    case appCommonActions.INITROOTSUCCESS: {
      let a = action as appCommonActions.InitRootSuccess;
      return tassign(state, { rootItems:a.items});
    }
    case appCommonActions.OPENMODAL: {
      return tassign(state, { openedModalName: action.modalName });
    }      
    case appCommonActions.CLOSEMODAL: {
      return tassign(state, { openedModalName: null });
    }
    case appCommonActions.INITIALIZED: {
      return tassign(state, { initialized: true });
    }
    case appCommonActions.LOADITEMTYPESSUCCESS: {
      let a = action as appCommonActions.LoadItemTypesSuccess;
      return tassign(state, { itemTypes: a.itemTypes });
    }
    default: {
      return state;
    }
  }
}

export const getOpenedModalName = (state: State) => state.openedModalName;
export const getInitialized = (state: State) => state.initialized;
export const getItemTypes = (state: State) => state.itemTypes;
export const getRootItems = (state: State) => state.rootItems;

export const selectAppCommonState = createFeatureSelector<State>(MODULE_NAME);

export const selectOpenedModalName = createSelector(selectAppCommonState, getOpenedModalName);
export const selectGetInitialized = createSelector(selectAppCommonState, getInitialized);
export const selectGetItemTypes = createSelector(selectAppCommonState, getItemTypes);
export const selectGetRootItems = createSelector(selectAppCommonState, getRootItems);