<template>
    <div class="shoppingCart">
        <!-- 购物车头部 -->
        <div class="cart-header">
            <div class="cart-header-content">
                <p>
                    <i class="el-icon-shopping-cart-full" style="color:#ff6700; font-weight: 600;"></i>
                    我的购物车
                </p>
                <span>温馨提示：产品是否购买成功，以最终下单为准哦，请尽快结算</span>
            </div>
        </div>
        <!-- 购物车头部END -->

        <!-- 购物车主要内容区 -->
        <div class="content" v-if="getShoppingCart.length > 0">
            <ul>
                <!-- 购物车表头 -->
                <li class="header">
                    <div class="pro-check">
                        <el-checkbox v-model="isAllCheck">全选</el-checkbox>
                    </div>
                    <div class="pro-img"></div>
                    <div class="pro-name">商品名称</div>
                    <div class="pro-price">单价</div>
                    <div class="pro-num">数量</div>
                    <div class="pro-total">小计</div>
                    <div class="pro-action">操作</div>
                </li>
                <!-- 购物车表头END -->

                <!-- 购物车列表 -->
                <li class="product-list" v-for="(item, index) in getShoppingCart" :key="item.id">
                    <div class="pro-check">
                        <el-checkbox :value="item.check" @change="checkChange($event, index)"></el-checkbox>
                    </div>
                    <div class="pro-img">
                        <router-link :to="{ path: '/goods/details', query: { productID: item.productID } }">
                            <img :src="$target + item.productImg" />
                        </router-link>
                    </div>
                    <div class="pro-name">
                        <router-link :to="{ path: '/goods/details', query: { productID: item.productID } }">{{
                            item.productName
                        }}</router-link>
                    </div>
                    <div class="pro-price">{{ item.price }}元</div>
                    <div class="pro-num">
                        <el-input-number
                            size="small"
                            :value="item.num"
                            @change="handleChange($event, index, item.productID)"
                            :min="1"
                            :max="item.maxNum"
                        ></el-input-number>
                    </div>
                    <div class="pro-total pro-total-in">{{ item.price * item.num }}元</div>
                    <div class="pro-action">
                        <el-popover placement="right">
                            <p>确定删除吗？</p>
                            <div style="text-align: right; margin: 10px 0 0">
                                <el-button type="primary" size="mini" @click="deleteItem($event, item.id, item.productID)">确定</el-button>
                            </div>
                            <i class="el-icon-error" slot="reference" style="font-size: 18px;"></i>
                        </el-popover>
                    </div>
                </li>
                <!-- 购物车列表END -->
            </ul>
            <div style="height:20px;background-color: #f5f5f5"></div>
            <!-- 购物车底部导航条 -->
            <div class="cart-bar">
                <div class="cart-bar-left">
                    <span>
                        <router-link to="/goods">继续购物</router-link>
                    </span>
                    <span class="sep">|</span>
                    <span class="cart-total">
                        共
                        <span class="cart-total-num">{{ getNum }}</span> 件商品，已选择
                        <span class="cart-total-num">{{ getCheckNum }}</span> 件
                    </span>
                </div>
                <div class="cart-bar-right">
                    <span>
                        <span class="total-price-title">合计：</span>
                        <span class="total-price">{{ getTotalPrice }}元</span>
                    </span>
                    <router-link :to="getCheckNum > 0 ? '/confirmOrder' : ''">
                        <div :class="getCheckNum > 0 ? 'btn-primary' : 'btn-primary-disabled'">去结算</div>
                    </router-link>
                </div>
            </div>
            <!-- 购物车底部导航条END -->
        </div>
        <!-- 购物车主要内容区END -->

        <!-- 购物车为空的时候显示的内容 -->
        <div v-else class="cart-empty">
            <div class="empty">
                <h2>您的购物车还是空的！</h2>
                <p>快去购物吧！</p>
            </div>
        </div>
        <!-- 购物车为空的时候显示的内容END -->
    </div>
</template>
<script>
import { mapActions } from 'vuex'
import { mapGetters } from 'vuex'

export default {
    data() {
        return {}
    },
    methods: {
        ...mapActions(['updateShoppingCart', 'deleteShoppingCart', 'checkAll']),
        // 修改商品数量的时候调用该函数
        handleChange(currentValue, key, productID) {
            // 当修改数量时，默认勾选
            this.updateShoppingCart({ key: key, prop: 'check', val: true })
            // 向后端发起更新购物车的数据库信息请求
            this.$axios
                .post('/api/user/shoppingCart/updateShoppingCart', {
                    user_id: this.$store.getters.getUser.user_id,
                    product_id: productID,
                    num: currentValue,
                })
                .then((res) => {
                    switch (res.data.code) {
                        case '001':
                            // “001”代表更新成功
                            // 更新vuex状态
                            this.updateShoppingCart({
                                key: key,
                                prop: 'num',
                                val: currentValue,
                            })
                            // 提示更新成功信息
                            this.notifySucceed(res.data.msg)
                            break
                        default:
                            // 提示更新失败信息
                            this.notifyError(res.data.msg)
                    }
                })
                .catch((err) => {
                    return Promise.reject(err)
                })
        },
        checkChange(val, key) {
            // 更新vuex中购物车商品是否勾选的状态
            this.updateShoppingCart({ key: key, prop: 'check', val: val })
        },
        // 向后端发起删除购物车的数据库信息请求
        deleteItem(e, id, productID) {
            this.$axios
                .post('/api/user/shoppingCart/deleteShoppingCart', {
                    user_id: this.$store.getters.getUser.user_id,
                    product_id: productID,
                })
                .then((res) => {
                    switch (res.data.code) {
                        case '001':
                            // “001” 删除成功
                            // 更新vuex状态
                            this.deleteShoppingCart(id)
                            // 提示删除成功信息
                            this.notifySucceed(res.data.msg)
                            break
                        default:
                            // 提示删除失败信息
                            this.notifyError(res.data.msg)
                    }
                })
                .catch((err) => {
                    return Promise.reject(err)
                })
        },
    },
    computed: {
        ...mapGetters(['getShoppingCart', 'getCheckNum', 'getTotalPrice', 'getNum']),
        isAllCheck: {
            get() {
                return this.$store.getters.getIsAllCheck
            },
            set(val) {
                this.checkAll(val)
            },
        },
    },
}
</script>
<style scoped>
.shoppingCart {
    background-color: #f5f5f5;
    padding-bottom: 20px;
}
/* 购物车头部CSS */
.shoppingCart .cart-header {
    height: 64px;
    border-bottom: 2px solid #ff6700;
    background-color: #fff;
    margin-bottom: 20px;
}
.shoppingCart .cart-header .cart-header-content {
    width: 1225px;
    margin: 0 auto;
}
.shoppingCart .cart-header p {
    font-size: 28px;
    line-height: 58px;
    float: left;
    font-weight: normal;
    color: #424242;
}
.shoppingCart .cart-header span {
    color: #757575;
    font-size: 12px;
    float: left;
    height: 20px;
    line-height: 20px;
    margin-top: 30px;
    margin-left: 15px;
}
/* 购物车头部CSS END */

/* 购物车主要内容区CSS */
.shoppingCart .content {
    width: 1225px;
    margin: 0 auto;
    background-color: #fff;
}

.shoppingCart .content ul {
    background-color: #fff;
    color: #424242;
    line-height: 85px;
}
/* 购物车表头及CSS */
.shoppingCart .content ul .header {
    height: 85px;
    padding-right: 26px;
    color: #424242;
}
.shoppingCart .content ul .product-list {
    height: 85px;
    padding: 15px 26px 15px 0;
    border-top: 1px solid #e0e0e0;
}
.shoppingCart .content ul .pro-check {
    float: left;
    height: 85px;
    width: 110px;
}
.shoppingCart .content ul .pro-check .el-checkbox {
    font-size: 16px;
    margin-left: 24px;
}
.shoppingCart .content ul .pro-img {
    float: left;
    height: 85px;
    width: 120px;
}
.shoppingCart .content ul .pro-img img {
    height: 80px;
    width: 80px;
}
.shoppingCart .content ul .pro-name {
    float: left;
    width: 380px;
}
.shoppingCart .content ul .pro-name a {
    color: #424242;
}
.shoppingCart .content ul .pro-name a:hover {
    color: #ff6700;
}
.shoppingCart .content ul .pro-price {
    float: left;
    width: 140px;
    padding-right: 18px;
    text-align: center;
}
.shoppingCart .content ul .pro-num {
    float: left;
    width: 150px;
    text-align: center;
}
.shoppingCart .content ul .pro-total {
    float: left;
    width: 120px;
    padding-right: 81px;
    text-align: right;
}
.shoppingCart .content ul .pro-total-in {
    color: #ff6700;
}
.shoppingCart .content ul .pro-action {
    float: left;
    width: 80px;
    text-align: center;
}
.shoppingCart .content ul .pro-action i:hover {
    color: #ff6700;
}
/* 购物车表头及CSS END */

/* 购物车底部导航条CSS */
.shoppingCart .cart-bar {
    width: 1225px;
    height: 50px;
    line-height: 50px;
    background-color: #fff;
}
.shoppingCart .cart-bar .cart-bar-left {
    float: left;
}
.shoppingCart .cart-bar .cart-bar-left a {
    line-height: 50px;
    margin-left: 32px;
    color: #757575;
}
.shoppingCart .cart-bar .cart-bar-left a:hover {
    color: #ff6700;
}
.shoppingCart .cart-bar .cart-bar-left .sep {
    color: #eee;
    margin: 0 20px;
}
.shoppingCart .cart-bar .cart-bar-left .cart-total {
    color: #757575;
}
.shoppingCart .cart-bar .cart-bar-left .cart-total-num {
    color: #ff6700;
}
.shoppingCart .cart-bar .cart-bar-right {
    float: right;
}
.shoppingCart .cart-bar .cart-bar-right .total-price-title {
    color: #ff6700;
    font-size: 14px;
}
.shoppingCart .cart-bar .cart-bar-right .total-price {
    color: #ff6700;
    font-size: 30px;
}
.shoppingCart .cart-bar .cart-bar-right .btn-primary {
    float: right;
    width: 200px;
    text-align: center;
    font-size: 18px;
    margin-left: 50px;
    background: #ff6700;
    color: #fff;
}
.shoppingCart .cart-bar .cart-bar-right .btn-primary-disabled {
    float: right;
    width: 200px;
    text-align: center;
    font-size: 18px;
    margin-left: 50px;
    background: #e0e0e0;
    color: #b0b0b0;
}
.shoppingCart .cart-bar .cart-bar-right .btn-primary:hover {
    background-color: #f25807;
}
/* 购物车底部导航条CSS END */
/* 购物车主要内容区CSS END */

/* 购物车为空的时候显示的内容CSS */
.shoppingCart .cart-empty {
    width: 1225px;
    margin: 0 auto;
}
.shoppingCart .cart-empty .empty {
    height: 300px;
    padding: 0 0 130px 558px;
    margin: 65px 0 0;
    background: url(../assets/imgs/cart-empty.png) no-repeat 124px 0;
    color: #b0b0b0;
    overflow: hidden;
}
.shoppingCart .cart-empty .empty h2 {
    margin: 70px 0 15px;
    font-size: 36px;
}
.shoppingCart .cart-empty .empty p {
    margin: 0 0 20px;
    font-size: 20px;
}
/* 购物车为空的时候显示的内容CSS END */
</style>
