<template>
    <div class="goods">
        <product-list :data="productList" top-class-name="channel-tab"></product-list>
    </div>
</template>

<script>
    import $ from 'jquery';
    import productList from 'component/product/list.vue';
    import bus from 'common/vue-bus';

    const dataCache = {};

    export default {
        data() {
            return {
                productList: [],
                productSkn: []
            };
        },
        props: ['floor'],
        components: {
            productList
        },
        methods: {
            getProducts(productSkn) {
                if (!productSkn.length) {
                    return;
                }
                productSkn = productSkn.join(',');

                if (dataCache[productSkn]) {
                    this.productList = this.productList.concat(dataCache[productSkn]);
                    return;
                }
                $.ajax({
                    url: '/channel/goods.json',
                    data: {
                        productSkn: productSkn
                    }
                }).then(result => {
                    this.productList = this.productList.concat(result);

                    if (result.length) {
                        dataCache[productSkn] = result;
                    }
                });
            }
        },
        created() {
            const skns = {};
            const limit = 50;
            let page = 0;

            this.floor.forEach(item => {
                // 去除重复 skn
                if (!skns[item.id]) {
                    skns[item.id] = 1;
                }
            });
            this.productSkn = Object.keys(skns);
            this.getProducts(this.productSkn.slice(page, limit));

            bus.$on('list.paging', () => {
                page++;
                this.getProducts(this.productSkn.slice(page * limit, (page + 1) * limit));
            });
        }
    };
</script>

<style>
    .goods {
        background: #fff;
    }
</style>