<template>
    <view class="app-layout" :style="{background: isSearch ? '#f7f7f7' : '#fafafa'}">
        <app-layout>
            <view class="search">
                <view class="top">
                    <view class="dir-left-nowrap box">
                        <input type="text" class="box-grow-1 input" confirm-type="搜索" @confirm="search"
                               v-model="keyword">
                        <view class="close-tip" @click="clear">
                            <image class="search-close" v-if="keyword"
                                   src="/static/image/icon/delete-yuan.png"></image>
                        </view>
                        <view class="box-grow-0 cross-center" @click="search">搜索</view>
                    </view>
                </view>
                <!-- hidden -->
                <view style="height: 104rpx"></view>
                <view class="hot opacity-hide">
                    <view v-if="historyList.length > 0" class="history">
                        <view class="dir-left-wrap list">
                            <block v-for="(item, index) in historyList" :key="index">
                                <view class="box-grow-0 cross-center item once-item">
                                    <view class="t-omit" style="max-width: 650rpx">{{item.keyword}}</view>
                                </view>
                            </block>
                        </view>
                    </view>
                </view>
                <!-- -->
                <view v-show="!isSearch" class="hot">
                    <!-- 历史记录 -->
                    <view v-if="historyList.length > 0" class="history">
                        <view class="dir-left-nowrap cross-center title">
                            <view class="box-grow-1">历史搜索</view>
                            <image src="../../static/image/icon/delete.png" class="box-grow-0"
                                   @click="deleteHistory"></image>
                        </view>
                        <view class="dir-left-wrap list">
                            <view class="dir-top-nowrap">
                                <view v-for="(line, temp_index) in realHistoryList" :key="temp_index"
                                      class="dir-left-wrap box-grow-1">
                                    <view v-for="(item, index) in line" :key="index" class="dir-left-wrap">
                                        <view v-if="!item.mark" class="box-grow-0 cross-center item"
                                              @click="historyClick(item.keyword)">
                                            <view class="t-omit" style="max-width: 650rpx">{{item.keyword}}</view>
                                        </view>
                                        <view v-if="item.mark && temp_index === 1"
                                              class="box-grow-0 close-pic cross-center"
                                              @click="selectAllList">
                                            <image src="./image/icon_open.png"></image>
                                        </view>
                                    </view>
                                </view>
                            </view>
                        </view>
                    </view>
                    <!-- 热搜 -->
                    <view class="hot-center" v-if="getSetting.is_show_hot_goods == 1">
                        <image class="top-image" src="./image/icon_top.png"></image>
                        <view class="top-list" v-if="hotGoodsList && hotGoodsList.length">
                            <view v-for="(goods,index) in hotGoodsList" :key="index"
                                  class="item cross-center dir-left-nowrap"
                                  @click="goodsNav(goods.url)">
                                <view class="box-grow-0 main-center first">
                                    <image v-if="goods.sort < 4" :src="goods.sort === 1 ? './image/list_icon_first.png' :
                                    goods.sort === 2 ? './image/list_icon_second.png' : './image/list_cion_third.png'"></image>
                                    <view v-if="goods.sort > 3">{{goods.sort}}</view>
                                </view>
                                <view class="goods-image box-grow-0">
                                    <image :src="goods.cover_pic"></image>
                                </view>
                                <view class="goods-name t-omit">{{goods.title}}</view>
                            </view>
                        </view>
                    </view>
                </view>
                <view v-if="isSearch" class="goods-list">
                    <template v-if="list.length <= 0">
                        <view class="main-center no-result">
                            <view class="dir-left-nowrap cross-center">
                                <image class="box-grow-0 empty" src="../../static/image/icon/empty.png"></image>
                                <view class="box-grow-1">
                                    <view>抱歉，没有相关商品</view>
                                    <view v-if="!mch_id" class="text">以下是为您推荐的商品</view>
                                </view>
                            </view>
                        </view>
                    </template>
                    <view style="background-color: #f7f7f7">
                        <u-ordinary-list :is-under-line-price="isListUnderlinePrice == 1 ? true : false"
                                         :theme-object="themeObject" :reset="goodsReset" :pagination="true" :isShowAttr="true" :list="newList" :theme="getTheme"
                                         :list-style="2"></u-ordinary-list>
                    </view>
                </view>
                <view class="u-loading-list" v-if="loading">加载中...</view>
            </view>
        </app-layout>
    </view>
</template>

<script>
import {mapGetters, mapState} from 'vuex';
import uOrdinaryList from '../../components/page-component/u-goods-list/u-ordinary-list.vue';

let page = 1;
let is_loading = false;
let is_no_more = false;

export default {
    name: "search",
    components: {
        uOrdinaryList
    },
    data() {
        return {
            hotGoodsList: [],
            list: [],
            isSearch: false,
            historyList: [],
            keyword: '',
            recommend_list: [],
            mch_id: 0,
            beginAfter: true,
            tempList: [],
            realHistoryList: [],
            loading: false,
            goodsReset: false
        };
    },
    computed: {
        ...mapGetters('mallConfig', {
            getTheme: 'getTheme',
            getSetting: 'getSetting',
        }),
        newList() {
            if (this.list.length > 0) {
                return this.list;
            } else {
                return this.recommend_list;
            }
        },
        sizeTransform() {
            const windowWidth = uni.getSystemInfoSync().windowWidth;
            const p = 750 / windowWidth;
            const boxLeft = 24 / p;
            const marginRight = 20 / p;
            const btnWidth = 60 / p;
            const listWidth = windowWidth - boxLeft * 2;
            return {
                p, boxLeft, marginRight, btnWidth, listWidth
            }
        },
        themeObject:function() {
            return {
                back: this.getTheme + '-m-back ' + this.getTheme,
                theme: this.getTheme,
                color: this.getTheme + '-m-text ' + this.getTheme,
                sBack: this.getTheme + '-s-back ' + this.getTheme
            }
        },
        ...mapState({
            isListUnderlinePrice: state => state.mallConfig.mall.setting.is_list_underline_price
        }),
    },
    onLoad(options) {
        this.mch_id = options.mch_id ? options.mch_id : 0;
        page = 1;
        is_loading = false;
        is_no_more = false;
        this.historyList = this.getHistory();
        this.getSelect();
        this.getRecommend();
        this.getHotSearch();
    },
    onReachBottom() {
        if (is_no_more) {

        } else {
            this.goodsReset = false;
            if (this.keyword) {
                this.loading = true;
                this.getGoodsList();
            }
        }
    },
    watch: {
        keyword: {
            handler(v) {
                if (v == '') {
                    this.cancel();
                }
            },
            immediate: true,
        }
    },
    methods: {
        async getSelect() {
            const historyList = this.historyList;
            if (historyList && historyList.length) {
                const self = this;
                setTimeout(() => {
                    // #ifndef MP-WEIXIN
                    let query = uni.createSelectorQuery();
                    // #endif
                    // #ifdef MP-WEIXIN
                    let query = uni.createSelectorQuery().in(this);
                    // #endif
                    query.selectAll('.once-item').fields({
                        size: true,
                    }, function (res) {
                        self.formatData(res);
                        if (self.beginAfter) {
                            self.selectLimitList(res);
                        } else {
                            self.selectAllList();
                        }
                    }).exec();
                },500)
            }
        },
        formatData(res) {
            const self = this;
            const historyList = self.historyList;
            const {marginRight, listWidth} = self.sizeTransform;

            //列表格式化
            let tempList = [];
            let item = [];
            let line_width = 0;
            for (let i = 0; i < res.length; i++) {
                const alone_width = res[i].width + marginRight;
                let alone_width_count = alone_width + line_width;
                if (alone_width_count <= listWidth) {
                    item.push(historyList[i]);
                    line_width = alone_width_count;
                } else {
                    if (item.length === 0 && line_width === 0) {
                        tempList.push([historyList[i]]);
                    } else {
                        tempList.push(item);
                        line_width = 0;
                        item = [];
                        i--;
                    }
                }
            }
            if (item.length) {
                tempList.push(item);
            }
            this.tempList = tempList;
        },

        selectLimitList(res) {
            const self = this;
            const {btnWidth, listWidth, marginRight} = self.sizeTransform;
            let newArr = JSON.parse(JSON.stringify(self.tempList));
            let realHistoryList = [];
            if (newArr.length > 2) {
                let indexMore = 0;
                const secondWidth = listWidth - btnWidth - marginRight;
                let maxWidth = 0;
                newArr[1].forEach((item, index) => {
                    maxWidth += res[newArr[0].length + index].width + marginRight
                    if (maxWidth <= secondWidth) {
                        indexMore = index + 1;
                    }
                })
                newArr[1].splice(indexMore, newArr[1].length - indexMore, {
                    mark: true,
                });
                realHistoryList = [newArr[0], newArr[1]];
                self.beginAfter = true;
            } else {
                //newArr.forEach(item => realHistoryList = [...realHistoryList, ...item]);
                newArr.forEach(item => realHistoryList.push(item));
                self.beginAfter = false;
            }
            self.realHistoryList = realHistoryList;
        },

        selectAllList() {
            const tempList = this.tempList;
            let arr = [];
            if (tempList && tempList.length) {
                for (let i = 0; i < 5 && i < tempList.length; i++) {
                    arr.push(tempList[i]);
                }
            }
            this.beginAfter = false;
            this.realHistoryList = arr;
        },
        goodsNav(url) {
            uni.navigateTo({url: url});
        },
        clear() {
            uni.hideKeyboard()
            this.keyword = '';
            this.loading = false;
        },
        getHotSearch() {
            if (this.getSetting.is_show_hot_goods != 1) {
                return;
            }
            this.$request({
                url: this.$api.goods.hot_search,
            }).then(response => {
                this.hotGoodsList = response.data.list;
            });
        },
        cancel() {
            this.isSearch = false;
            this.loading = false;
            this.keyword = '';
            this.list = [];
        },
        reset() {
            page = 1;
            is_no_more = false;
            this.goodsReset = true;
            this.getGoodsList();
        },
        search() {
            let keyword = this.keyword;
            if (keyword === '') return;
            this.keyword = keyword.trim();
            this.setHistory();
            this.getSelect();
            this.reset();
        },
        getGoodsList() {
            if (!this.keyword) return;
            if (is_loading) return;
            is_loading = true;
            this.$request({
                url: this.$api.default.goods_list,
                data: {
                    keyword: this.keyword,
                    mch_id: this.mch_id,
                    page: page,
                }
            }).then(response => {
                is_loading = false;
                this.isSearch = true;
                this.loading = false;
                let { code, data, msg } = response;
                if (code === 0) {
                    if (page === 1) this.list = [];
                    if (data.list.length > 0) {
                        this.list.push(...data.list);
                        page++;
                    } else {
                        is_no_more = true;
                        if (page === 1) this.getRecommend();
                    }
                } else {
                    uni.showModal({
                        content: msg
                    })
                }
            }).catch(() => {
                is_loading = false;
            });
        },
        setHistory() {
            let historyList = this.getHistory();
            let keyword = this.keyword.trim();

            historyList.forEach((item, index) => {
                if (item.keyword === keyword) historyList.splice(index, 1);
            });
            historyList.unshift({
                keyword: keyword,
            });
            if (historyList.length > 20) historyList.pop();
            this.historyList = historyList;
            uni.setStorageSync("SEARCH_HISTORY_LIST", historyList);
        },
        getHistory() {
            let historyList = uni.getStorageSync('SEARCH_HISTORY_LIST');
            if (!historyList) historyList = [];
            return historyList;
        },
        deleteHistory() {
            let self = this;
            uni.showModal({
                content: '确认删除全部历史记录？',
                success: function (res) {
                    if (res.confirm) {
                        uni.removeStorageSync("SEARCH_HISTORY_LIST");
                        self.historyList = [];
                    }
                }
            });
        },
        historyClick(keyword) {
            this.keyword = keyword.trim();
            this.reset();
        },
        getRecommend() {
            if (this.mch_id) return;
            if (this.recommend_list.length > 0) return;
            this.$request({
                url: this.$api.goods.new_recommend,
                data: {
                    goods_id: 0,
                    type: 'goods'
                }
            }).then(response => {
                if (response.code === 0) this.recommend_list = response.data.list;
            });
        }
    }
}
</script>

<style scoped lang="scss">
    .opacity-hide {
        position: fixed;
        top: var(--window-top);
        z-index: -10;
        opacity: 0;
        overflow: hidden;
    }

    .search {
        background-color: #efeff4;
    }

    .close-pic {
        margin-right: #{20rpx};
        margin-bottom: #{16rpx};
        border-radius: 50%;

        image {
            height: #{60rpx};
            width: #{60rpx};
            display: block;
        }
    }

    .hot {
        background-color: #fafafa;
        border-radius: #{16rpx};

        .hot-center {
            padding: #{32rpx} #{24rpx};

            .top-image {
                width: #{159rpx};
                height: #{25rpx};
                display: block;
            }

            .top-list {
                margin-top: #{32rpx};
                border-radius: #{16rpx};
                padding: #{32rpx - 10rpx} 0;
                box-shadow: 0 0 #{12rpx} 0 #e0e0e0;

                .item {
                    height: #{110rpx};

                    .first {
                        width: #{120rpx};
                        font-weight: bold;

                        image {
                            width: #{48rpx};
                            height: #{43rpx};
                            display: block;
                        }

                        view {
                            color: #999999;
                            font-size: #{26rpx};
                        }
                    }

                    .goods-image {
                        image {
                            height: #{90rpx};
                            width: #{90rpx};
                            display: block;
                            border-radius: #{8rpx};
                        }
                    }

                    .goods-name {
                        color: #333333;
                        font-size: #{26rpx};
                        margin: 0 #{24rpx};
                    }
                }

            }
        }

    }

    .app-layout {
        min-height: 100vh;
    }

    .top {
        position: fixed;
        width: 100%;
        top: var(--window-top);
        z-index: 15;
        padding: #{20rpx} #{24rpx};
        background-color: #efeff4;
        font-size: $uni-font-size-import-two;
        color: $uni-general-color-one;

        .input {
            background-color: #ffffff;
            border-radius: #{50rpx 0 0 50rpx};
            padding: 0 #{32rpx};
            font-size: $uni-font-size-general-one;
            height: #{64rpx};
        }

        .box {
            position: relative;

            .close-tip {
                width: #{64rpx};
                height: #{64rpx};
                background-color: #ffffff;
                border-radius: #{0 50rpx 50rpx 0};
                margin-right: #{20rpx};
            }

            .search-close {
                width: #{32rpx};
                height: #{32rpx};
                border-radius: 50%;
                margin: #{16rpx};
            }
        }

        .radio {
            margin-top: #{32rpx};

            .radio-item {
                padding-bottom: #{12rpx};
            }

            .active {
                border-bottom: #{4rpx} solid;
            }
        }
    }

    .history {
        padding: #{36rpx} #{24rpx};
        border-radius: #{16rpx} #{16rpx} 0 0;
        background-color: #ffffff;
        font-size: $uni-font-size-general-one;

        .title {
            padding-bottom: #{24rpx};
            color: $uni-general-color-one;

            image {
                width: #{28rpx};
                height: #{34rpx};
                display: block;
            }
        }

        .list {
            .item {
                height: #{64rpx};
                background-color: #f7f7f7;
                padding: 0 #{20rpx};
                margin-right: #{20rpx};
                margin-bottom: #{16rpx};
                border-radius: #{32rpx};
            }
        }
    }

    .goods-list {
        .no-result {
            height: #{156rpx};
            padding: #{28rpx} 0;
            font-size: $uni-font-size-general-one;
            background-color: #ffffff;

            .text {
                color: $uni-general-color-two;
            }

            .empty {
                width: #{100rpx};
                height: #{100rpx};
                display: block;
                margin-right: #{40rpx};
            }
        }
    }
    .u-loading-list {
        height: 64upx;
        line-height: 64upx;
        text-align: center;
        color: #b0b0b0;
        font-size: 24upx;
        background-color: #f7f7f7;
    }
</style>
