{
	id: 1,
	name: 'AirPods',
	brand: 'Apple',
	image: '/src/images/airPods.jpg',
	imageDetail: '/src/images/airPods_detail.jpg',
	sales: 10000,
	cost: 1288,
	color: '白色'
},

let username = window.localStorage.getItem('username');
let password = window.localStorage.getItem('password');
if(!util.trim(this.username) || !util.trim(this.username) ){
	window.alert('账号或密码不能为空');
	return;
}
if(username === this.username && password === this.password){
	this.login = false;
	window.localStorage.setItem('loginStatus', 'login');
	this.$store.commit('getUser', this.username);
	window.alert('登陆成功，确定进入网站首页');
	window.location.href = '/list';
}else{
	window.alert('账号或密码错误');
}

filteredAndOrderedList(){
	//拷贝原数组
	let list = [...this.list];
	//品牌过滤
	if(this.filterBrand !== ''){
		list = list.filter(item => item.brand === this.filterBrand);
	}
	//颜色过滤
	if(this.filterColor !== ''){
		list = list.filter(item => item.color === this.filterColor);
	}
	//排序
	if(this.order !== ''){
		if(this.order === 'sales'){
			list = list.sort((a, b) => b.sales - a.sales);
		}else if(this.order === 'cost-desc'){
			list = list.sort((a, b) => b.cost - a.cost);
		}else if(this.order === 'cost-asc'){
			list = list.sort((a, b) => a.cost - b.cost);
		}
	}
	return list;
}

//购物车商品总数
countAll(){
	let count = 0;
	this.cartList.forEach(item => {
		count += item.count;
	});
	return count;
},
//购物车商品总价
costAll(){
	let cost = 0;
	this.cartList.forEach(item => {
		cost += this.productDictList[item.id].cost * item.count;
	});
	return cost;
}

//通知Vuex,完成下单
handleOrder(){
	this.$store.dispatch('buy').then(() => {
		window.alert('购买成功');
	})
},

const router = new VueRouter(RouterConfig);

//跳转前设置title
router.beforeEach((to, from, next) => {
    window.document.title = to.meta.title;
    next();
});
//跳转后设置scroll为原点
router.afterEach((to, from, next) => {
    window.scrollTo(0, 0);
});

//商品列表路由配置
const routers = [
    {
        path: '/list',
        meta: {
            title: '商品列表'
        },
        component: (resolve) => require(['./views/list.vue'], resolve)
    },
    {
        path: '/product/:id',
        meta: {
            title: '商品详情'
        },
        component: (resolve) => require(['./views/product.vue'], resolve)
    },
    {
        path: '/cart',
        meta: {
            title: '购物车'
        },
        component: (resolve) => require(['./views/cart.vue'], resolve)
    },
    {
        path: '/login/:loginStatus',
        meta: {
            title: '登录注册'
        },
        component: (resolve) => require(['./views/login.vue'], resolve)
    },
    {
        path: '*',
        redirect: '/login/login'
    }
];
export default routers;

//配置Vuex状态管理
const store = new Vuex.Store({
    state: {
        //商品列表信息
        productList: [],
        //购物车数据，数组形式，数据元素为对象（商品id，购买数量count）
        cartList: [],
        //当前用户账号
        username: window.localStorage.getItem('username'),
        //登录状态
        loginStatus: !!window.localStorage.getItem('loginStatus'),
    },
	getters: {
        //品牌、颜色筛选
        brands: state => {
            const brands = state.productList.map(item => item.brand);
            return util.getFilterArray(brands);
        },
        colors: state => {
            const colors = state.productList.map(item => item.color);
            return util.getFilterArray(colors);
        }
    },
    //mutations只能以同步方式
    mutations: {
        //添加商品列表
        setProductList(state, data){
            state.productList = data;
        },
        //添加购物车
        addCart(state, id){
            const isAdded = state.cartList.find(item => item.id === id);
            //如果不存在设置购物车为1，存在count++
            if(isAdded){
                isAdded.count++;
            }else{
                state.cartList.push({
                    id: id,
                    count: 1
                })
            }
        },
		//修改购物车商品数量
        editCartCount(state, payload){
            const product = state.cartList.find(item => item.id === payload.id);
            product.count += payload.count;
        },
        //删除购物车商品
        deleteCart(state, id){
            const index = state.cartList.findIndex(item => item.id === id);
            state.cartList.splice(index, 1)
        },
        //清空购物车
        emptyCart(state){
            state.cartList = [];
        },
        getUser(state, username){
            console.log('username',username)
            state.username = username;
        },
        getLoginStatus(state, flag){
            state.loginStatus = flag;
        }
    },
	actions: {
        //异步请求商品列表，暂且使用setTimeout
        getProductList(context){
            setTimeout(() => {
                context.commit('setProductList', product_data)
            }, 500);
        },
        //购买
        buy(context){
            //生产环境使用ajax请求服务端响应后再清空购物车
            return new Promise(resolve => {
                setTimeout(() => {
                    context.commit('emptyCart');
                    resolve();
                }, 500);
            });
        },
    }
});