import { Action, ActionReducerMap, combineReducers } from '@ngrx/store';
import { initialState, IChatState } from './chat.state';
import * as ChatActions from '../chat.actions';
import * as _ from 'lodash';
import { ChatMessage } from '../entities';


export function chatReducerFun(state = initialState, action: ChatActions.ChatActionsUnion): IChatState {

    switch (action.type) {
        case ChatActions.ActionTypes.InitApp:
            return {
                ...state,
                appUser: _.assign({}, action.paylad) as any
            };
        case ChatActions.ActionTypes.LoginChat:
            // 处理登陆
            return {
                ...state,
                appUser: _.assign({}, state.appUser, action.paylad) as any
            };
        case ChatActions.ActionTypes.ChannelChanged:

            return {
                ...state,
                channel: action.paylad
            };
        case ChatActions.ActionTypes.MessageChanged:
            const data = action.paylad as any;
            const messages = state.messages.concat();
            // messages.unshift(...<ChatMessage[]>data); 
            messages.push(...<ChatMessage[]>data);
            return {
                ...state,
                messages
            };
        default:
            return state;
    }

}

export interface IChatRootState {
    chat: IChatState;
}
export const chatReducer: ActionReducerMap<IChatRootState> = {
    chat: chatReducerFun
};