next-ucap-messenger/projects/ucap-webmessenger-app/src/app/store/messenger/sync/reducers.ts

import { createReducer, on } from '@ngrx/store';
import { initialState } from './state';
import {
  buddy2Data,
  buddy2Success,
  group2Data,
  group2Success
} from './actions';

export const reducer = createReducer(
  initialState,
  on(buddy2Data, (state, action) => {
    return {
      ...state,
      buddyInfoList: [...state.buddyInfoList, ...action.data.buddyInfos]
    };
  }),
  on(buddy2Success, (state, action) => {
    return {
      ...state,
      buddy2SyncDate: action.res.syncDate
    };
  }),
  on(group2Data, (state, action) => {
    return {
      ...state,
      groupList: [...state.groupList, action.data]
    };
  }),
  on(group2Success, (state, action) => {
    return {
      ...state,
      group2SyncDate: action.res.syncDate
    };
  })
);