/**
 * 列表页数据处理
 * @author: yyq<yanqing.yang@yoho.cn>
 * @date: 2017/11/24
 */

'use strict';
const _ = require('lodash');
const helpers = global.yoho.helpers;
const indexUrl = {
    boys: helpers.urlFormat('/'),
    girls: helpers.urlFormat('/woman'),
    kids: helpers.urlFormat('/kids'),
    lifestyle: helpers.urlFormat('/lifestyle')
};

const parameter = require(`${global.utils}/parameter`);


// 页面商品数量
const pageSizeType = [40, 100, 200];


const handleFilterUrl = parameter.fullParamToMinPath;

/**
 * 根据页面设置面包屑导航
 * @type {[type]}
 */
const handlePathNavData = (data, params, page, channel, baseUrl) => {
    let rootName = '首页';

    if (channel && _.isString(channel)) {
        rootName = channel.toUpperCase() + rootName;
    }

    let pathNav = [{
        href: indexUrl[channel],
        name: rootName, // '首页',
        pathTitle: rootName // '首页'
    }];

    switch (page) {
        case 'search': // 搜索结果提示
            if (params.query || params.keywords) {
                params.query = params.query || params.keywords;
                pathNav.push({
                    name: '“<span id="nav_keyword">' +
                        params.query + '</span>”&nbsp;&nbsp;共<span id="nav_keyword_count">' +
                        data.total + '</span>个结果'
                });
            } else {
                pathNav.push({
                    name: '所有商品'
                });
            }
            break;
        case 'brand': // 品牌
            pathNav.push({
                name: '品牌一览',
                pathTitle: '品牌一览',
                href: helpers.urlFormat('/brands')
            }, {
                name: data.brandNameEn + data.brandNameCn,
                pathTitle: data.brandNameEn + data.brandNameCn
            });
            break;
        case 'shop': // 店铺
            pathNav.push({
                name: data.brandName,
                pathTitle: data.brandName
            });
            break;
        case 'new': // 新品到着
            pathNav.push({
                name: '新品到着',
                pathTitle: '新品到着'
            });
            break;
        default:  // eslint-disable-line
            let navList = [];
            const cateUrl = handleFilterUrl(baseUrl, {category_id: '{categoryId}'});

            _.forEach(data, sort => {
                let sortName = sort.category_name,
                    sortCategoryId = `${sort.category_id}`;

                if (`${params.category_id}` === sortCategoryId) {
                    navList = [{
                        name: sortName,
                        href: cateUrl.replace('{categoryId}', sortCategoryId),
                        pathTitle: sortName
                    }];
                    return false;
                } else if (!_.isEmpty(sort.sub)) {
                    _.each(sort.sub, misort => {
                        let misortName = misort.category_name;

                        if (`${params.category_id}` === `${misort.category_id}`) {
                            navList = [{
                                name: sortName,
                                href: cateUrl.replace('{categoryId}', sortCategoryId),
                                pathTitle: sortName
                            }, {
                                name: misortName,
                                href: cateUrl.replace('{categoryId}', misort.category_id),
                                pathTitle: misortName
                            }];
                            return false;
                        }
                    });
                    if (navList.length) {
                        return false;
                    }
                }
            });
            if (navList.length) {
                pathNav = _.concat(pathNav, navList);
            }
            break;
    }

    return {
        pathNav: pathNav,
        listType: page
    };
};

/**
 * 处理页面左侧分类筛选数据 new
 * @param origin 分类原始数据，一般是接口返回数据中的 group_sort 字段
 * @param params 当前 URL 中已有的参数
 * @param extra 可以任意传值用来处理特殊情况
 * @param {string} [baseUrl] 需要跳转非当前页面传的相对路径（可不传，默认为空字符串）
 * @returns {{}}
 */
const handleSortData = (origin, params, originParams, baseUrl) => {
    let leftContent = {
        sort: { misort: [] },
        checked: []
    };
    let allCount = 0;
    let all = [{
            name: '全部品类',
            num: allCount,
            href: handleFilterUrl(baseUrl, params, {}, {msort: true, misort: true, sort: true, category_id: true})
        }], list = [];

    // 生成占位符的url，不用每次遍历分类都拼接url，?category_id=${category_id}&gender=1,3
    const href = handleFilterUrl(baseUrl, params, {category_id: '${category_id}'}, {
        msort: true,
        misort: true,
        sort: true
    });
    const cid = `${originParams.category_id}`;

    _.each(origin, cate => {
        let cateActive = cid === `${cate.category_id}`;
        let category = {
            categoryId: cate.category_id,
            name: cate.category_name,
            active: cateActive
        };
        let childList = [{
            categoryId: cate.category_id,
            name: `全部${cate.category_name}`,
            href: href.replace('${category_id}', cate.category_id),
            childActive: cateActive
        }];

        _.each(cate.sub, subCate => {
            let subCateActive = cid === `${subCate.category_id}`;

            if (subCateActive) {
                category.active = true;
            }

            childList.push({
                categoryId: subCate.category_id,
                name: subCate.category_name,
                href: href.replace('${category_id}', subCate.category_id),
                childActive: cid === `${subCate.category_id}`
            });
        });

        category.childList = childList;

        list.push(category);
    });

    leftContent.allSort = {all, list};

    return leftContent;
};

class FilterTools {
    constructor(origin, params, baseUrl) {
        this.origin = origin;
        this.params = params;
        this.baseUrl = baseUrl;
    }
    handleFilterCheckedConditions() {
        let {baseUrl, origin, params} = this;
        const conditions = [];
        const customPrice = {
            min: '',
            max: ''
        };
        const filter = _.get(origin, 'filter', {});

        _.each(params, (v, k) => {
            const condition = {};

            if (k === 'price') {
                if (filter.priceRange[params.price]) {
                    condition.name = filter.priceRange[params.price].replace('¥', '￥');
                } else {
                    const prices = _.split(params.price, ',');

                    if (prices.length === 1 || (prices[0] && !prices[1])) {
                        condition.name = `￥${prices[0] || prices[1]}以上`;
                        customPrice.min = prices[0] || prices[1];
                    } else {
                        condition.name = `￥${prices[0] || 0}-${prices[1]}`;
                        customPrice.min = prices[0] || '';
                        customPrice.max = prices[1];
                    }
                }
            } else if (k === 'color') {
                const colorFind = _.find(filter.color, c => c.color_id === _.parseInt(params.color));

                if (colorFind) {
                    condition.name = colorFind.color_name;
                    condition.color = colorFind.color_value ? 'url(' + colorFind.color_value.replace('http://', '//') + ')' : '#' + colorFind.color_code.replace('#', '');
                }
            } else if (k === 'size') {
                const sizeFind = _.find(filter.size, c => c.size_id === _.parseInt(params.size));

                if (sizeFind) {
                    condition.name = sizeFind.size_name;
                }
            } else if (k === 'age_level') {
                if (filter.ageLevel) {
                    const ageFind = _.find(filter.ageLevel, c => +c.id === _.parseInt(params.age_level));

                    if (ageFind) {
                        condition.name = ageFind.name;
                    }
                }
            } else if (k === 'gender') {
                const genderFind = _.find(this.handleFilterGender(), 'checked');

                if (genderFind) {
                    condition.name = genderFind.name;
                }
            } else if (k === 'brand') {
                let brandFinds;

                if (filter.paramBrand) {
                    brandFinds = filter.paramBrand;
                } else {
                    const brands = _.split(params.brand, ',');

                    brandFinds = _.filter(filter.brand, c => _.some(brands, id => _.parseInt(id) === c.id));
                }
                if (brandFinds.length) {
                    condition.totalName = _.join(_.map(brandFinds, brand => brand.brand_name), '、');
                    condition.name = brandFinds.length > 1 ?
                        (`${brandFinds[0].brand_name}、${brandFinds[1].brand_name.substring(0, 3)}...`) :
                        condition.totalName;
                }
            } else if (k === 'style') {
                const styleids = _.split(params.style, ',');
                const styleFinds = _.filter(filter.style,
                        style => _.some(styleids, id => _.parseInt(id) === style.style_id));

                if (styleFinds.length) {
                    condition.name = styleFinds.length >= 2 ?
                        (`${styleFinds[0].style_name}、${styleFinds[1].style_name}`) :
                        styleFinds[0].style_name;
                }
            }
            if (condition.name) {
                const clearParams = Object.assign({}, params, { [k]: '' });

                condition.itemType = k;
                condition.href = handleFilterUrl(baseUrl, clearParams);
                conditions.push(condition);
                return;
            }
            if (k === 'standard') {
                const standard = _.get(origin, 'standard', []);
                const standardList = _.split(params.standard, ',');

                _.each(standardList, standardstr => {
                    const standardids = _.split(standardstr, '_');

                    if (standardids.length === 2) {
                        const pStandar = _.find(standard, s => _.parseInt(s.standard_id) === _.parseInt(standardids[0])); // eslint-disable-line

                        if (pStandar) {
                            const cStandar = _.find(pStandar.sub,
                                    s => _.parseInt(s.standard_id) === _.parseInt(standardids[1]));

                            if (cStandar) {
                                const clearParams = Object.assign({}, params, { [k]: '' });

                                conditions.push({
                                    itemType: pStandar.standard_name,
                                    href: handleFilterUrl(baseUrl, clearParams,
                                        {standard: _.join(_.filter(standardList, ids => ids !== standardstr), ',')}),  // eslint-disable-line
                                    name: cStandar.standard_name
                                });
                            }
                        }
                    }
                });
            }
        });
        return {conditions, customPrice};
    }
    handleFilterGender() { // 组装gender筛选数据
        let {baseUrl, params} = this;
        const href = handleFilterUrl(baseUrl, params, {gender: '${gender}'});

        return [{
            name: 'BOYS',
            href: href.replace('${gender}', '1,3'),
            checked: params.gender === '1,3'
        }, {
            name: 'GIRLS',
            href: href.replace('${gender}', '2,3'),
            checked: params.gender === '2,3'
        }];
    }
    handleFilterBrand() { // 组装brand筛选数据
        let {baseUrl, origin, params} = this;
        const filter = _.get(origin, 'filter', {});

        if (!filter.brand || !filter.brand.length) {
            return false;
        }
        const brands = [];
        const href = handleFilterUrl(baseUrl, params, {brand: '${brand}'});
        const brandids = _.split(params.brand, ',');

        _.each(filter.brand, brand => {
            brands.push({
                name: brand.brand_name,
                href: href.replace('${brand}', _.replace(brand.id, '-', '__')), // 替换全球购品牌id中-
                checked: _.some(brandids, bid => _.parseInt(bid) === brand.id)
            });
            if (brands.length >= 10) {
                return false;
            }
        });
        return {
            default: brands,
            showMore: brands.length > 9,
            showMulti: brands.length > 9,
            seatUrl: handleFilterUrl(baseUrl, params, {brand: '{seat}'})
        };
    }
    handleFilterSizes() { // 组装sizes筛选数据
        let {baseUrl, origin, params} = this;
        const filter = _.get(origin, 'filter', {});
        const sizes = [];
        const href = handleFilterUrl(baseUrl, params, {size: '${size}'});

        if (!params.category_id) {
            return sizes;
        }
        _.each(filter.size, size => {
            sizes.push({
                name: size.size_name,
                href: href.replace('${size}', size.size_id),
                checked: size.size_id === _.parseInt(params.size)
            });
        });
        return sizes;
    }
    handleFilterColors() {
        let {baseUrl, origin, params} = this;
        const filter = _.get(origin, 'filter', {});
        const colors = [];
        const href = handleFilterUrl(baseUrl, params, {color: '${color}'});

        _.each(filter.color, color => {
            colors.push({
                name: color.color_name,
                href: href.replace('${color}', color.color_id),
                checked: color.color_id === _.parseInt(params.color),
                rgb: color.color_value ?
                    'url(' + color.color_value.replace('http://', '//') + ')' :
                    '#' + color.color_code.replace('#', '')
            });
        });
        return colors;
    }
    handleFilterAgeLevels() { // 组装ageLevels筛选数据
        let {baseUrl, origin, params} = this;
        const filter = _.get(origin, 'filter', {});
        const ageLevels = [];
        const href = handleFilterUrl(baseUrl, params, {age_level: '${age_level}'});

        _.each(filter.ageLevel, age => {
            ageLevels.push({
                name: age.name,
                href: href.replace('${age_level}', age.id),
                checked: _.parseInt(age.id) === _.parseInt(params.age_level)
            });
        });
        return ageLevels;
    }
    handleFilterPrices() { // 组装prices筛选数据
        let {baseUrl, origin, params} = this;
        const filter = _.get(origin, 'filter', {});
        let prices = [];
        const href = handleFilterUrl(baseUrl, params, {price: '${price}'});

        _.each(filter.priceRange, (name, price) => {
            prices.push({
                name: name,
                href: href.replace('${price}', price),
                checked: price === params.price,
                order: _.parseInt(_.split(price, ',')[0])
            });
        });
        prices = _.sortBy(prices, (item) => {
            return item.order;
        });
        return prices;
    }
    handleFilterStyles() { // 组装style筛选数据
        let {baseUrl, origin, params} = this;
        const filter = _.get(origin, 'filter', {});
        let styles = [];
        const href = handleFilterUrl(baseUrl, params, {style: '${style}'});
        const styleids = _.split(params.style, ',');

        _.each(filter.style, style => {
            styles.push({
                name: style.style_name,
                href: href.replace('${style}', style.style_id),
                checked: _.some(styleids, id => _.parseInt(id) === style.style_id),
                id: style.style_id
            });
        });
        return styles;
    }
    handleFilterStandars() { // 组装standars筛选数据
        let {baseUrl, origin, params} = this;
        const standards = _.get(origin, 'standard', {});
        const filterStandars = [];
        const href = handleFilterUrl(baseUrl, params, {standard: '${standard}'});
        let standarParam = {};

        _.each(_.split(params.standard || '', ','), item => {
            const sps = _.split(item, '_');

            if (sps.length === 2) {
                standarParam[sps[0]] = sps[1];
            }
        });

        _.each(standards, standard => {
            if (standard.sub.length > 1) {
                filterStandars.push({
                    name: standard.standard_name,
                    sub: _.map(standard.sub, sub => {
                        const standarParamItem = Object.assign({}, standarParam, {
                            [standard.standard_id]: sub.standard_id
                        });
                        const standarParamStr = _.join(_.map(standarParamItem, (v, k) => {
                            return `${k}_${v}`;
                        }), ',');

                        return {
                            name: sub.standard_name,
                            href: href.replace('${standard}', standarParamStr),
                            checked: _.parseInt(sub.standard_id) === _.parseInt(standarParam[standard.standard_id]),
                            id: sub.standard_id
                        };
                    })
                });
            }
        });
        return filterStandars;
    }
}

/**
 * 处理筛选数据
 * @param origin 要处理的筛选数据 filter
 * @param params 当前 URL 中已有的参数，处理选中状态使用
 * @returns {{}}
 */
const handleFilterData = (origin, params, baseUrl) => {
    // 清除所有选中数据
    // 某些特殊带频道信息页面，清除性别，需将gender设为1，2，3 （2017-3 配合SEO进行URL改造）
    let remainParams = {
        gender: '1,2,3'
    };

    const tools = new FilterTools(origin, params, baseUrl);

    params.id && (remainParams.id = params.id);
    params.union_type && (remainParams.union_type = params.union_type);

    const clearUrl = handleFilterUrl(baseUrl, remainParams);

    const {conditions, customPrice} = tools.handleFilterCheckedConditions();
    const size = tools.handleFilterSizes();
    const gender = tools.handleFilterGender();
    const brand = tools.handleFilterBrand();
    const color = tools.handleFilterColors();
    const style = tools.handleFilterStyles();
    const standard = tools.handleFilterStandars();
    const checkedConditions = {
        clearUrl,
        conditions
    };
    let seniorChose = [];
    let price = [];
    let priceSeatUrl;

    if (origin.total >= 10) {
        price = tools.handleFilterPrices(origin, params);
        priceSeatUrl = handleFilterUrl(baseUrl, params, {price: '{seat}'}); // 带[占位符]的前端跳转url
    }
    let ageLevel = tools.handleFilterAgeLevels(origin, params);

    if (ageLevel.length <= 1) {
        ageLevel = [];
    }

    if (style.length > 1) {
        seniorChose.push({
            name: '风格',
            showMulti: true,
            sub: style,
            attr: 'style',
            seatUrl: handleFilterUrl(baseUrl, params, {style: '{seat}'}) // 带[占位符]的前端跳转url
        });
        seniorChose = seniorChose.concat(standard);
    }

    return {
        checkedConditions,
        size,
        gender,
        brand,
        color,
        ageLevel,
        customPrice,
        price,
        priceSeatUrl,
        seniorChose
    };
};

/**
 * 处理 sort 排序数据
 * @param params
 * @param extra 什么都可以传进来，多个参数传Object
 * @returns {{}}
 */
const handleOptSortData = (params, filter, baseUrl) => {
    const href = handleFilterUrl(baseUrl, params, {order: '${order}'}, {page: true});
    const sortType = [{
        href: href.replace('${order}', ''),
        name: '默认',
        active: !params.order || params.order === 's_n_desc',
        hasSortOrient: false
    }, {
        href: href.replace('${order}', 'h_v_desc'),
        name: '人气',
        active: params.order === 'h_v_desc',
        hasSortOrient: false
    }, {
        href: params.order === 's_t_desc' ?
            href.replace('${order}', 's_t_asc') :
            href.replace('${order}', 's_t_desc'),
        name: '新品',
        active: params.order === 's_t_desc' || params.order === 's_t_asc',
        hasSortOrient: true,
        desc: params.order !== 's_t_desc'
    }, {
        href: params.order === 's_p_desc' ?
            href.replace('${order}', 's_p_asc') :
            href.replace('${order}', 's_p_desc'),
        name: '价格',
        active: params.order === 's_p_desc' || params.order === 's_p_asc',
        hasSortOrient: true,
        desc: params.order !== 's_p_desc'
    }, {
        href: params.order === 'p_d_desc' ?
            href.replace('${order}', 'p_d_asc') :
            href.replace('${order}', 'p_d_desc'),
        name: '折扣',
        active: params.order === 'p_d_desc' || params.order === 'p_d_asc',
        hasSortOrient: true,
        desc: params.order !== 'p_d_desc'
    }];
    const checks = [];

    if (filter) {
        if (filter.new || params.new === 'Y') {
            checks.push({
                name: '新品',
                checked: params.new === 'Y',
                href: handleFilterUrl(baseUrl, params, {new: 'Y'}, params.new === 'Y' ? {new: true} : {})
            });
        }
        if (filter.specialoffer || params.specialoffer === 'Y') {
            checks.push({
                name: '打折',
                checked: params.specialoffer === 'Y',
                href: handleFilterUrl(baseUrl, params, {specialoffer: 'Y'}, params.specialoffer === 'Y' ? {specialoffer: true} : {})  // eslint-disable-line
            });
        }
        if (filter.limited || params.limited === 'Y') {
            checks.push({
                name: '限量',
                checked: params.limited === 'Y',
                href: handleFilterUrl(baseUrl, params, {limited: 'Y'}, params.limited === 'Y' ? {limited: true} : {})
            });
        }
    }
    return {sortType, checks};
};

/**
 * 处理 page 数据
 * @param params
 * @param extra 什么都可以传进来，多个参数传Object
 * @returns {{}}
 */
const handlePageData = (params, total, baseUrl) => {
    // 上下翻页数据处理
    const pageSizeUrl = handleFilterUrl(baseUrl, params, {limit: '${limit}'}, {page: true});
    const pageCounts = _.map(pageSizeType, size => {
        return {
            href: pageSizeUrl.replace('${limit}', size),
            count: size
        };
    });
    const curPage = _.parseInt(params.page || 1); // 当前页码数
    const countPerPage = _.parseInt(params.limit || pageSizeType[0]) - 1; // 每页商品数量
    const pageCount = _.ceil(total / countPerPage); // 全部页码数量
    let preHref;
    let nextHref;
    const pageUrl = handleFilterUrl(baseUrl, params, {page: '${page}'});

    if (curPage > 1) {
        preHref = pageUrl.replace('${page}', curPage - 1);
    }
    if (curPage < pageCount) {
        nextHref = pageUrl.replace('${page}', curPage + 1);
    }
    return {
        pageCounts,
        curPage,
        countPerPage: countPerPage + 1,
        pageCount,
        preHref,
        nextHref
    };
};

/**
 * 处理 opts 排序数据 new
 * @param params
 * @param extra 什么都可以传进来，多个参数传Object
 * @returns {{}}
 */
const handleOptsData = (params, total, filter, baseUrl) => {
    return Object.assign(
        handleOptSortData(params, filter, baseUrl),
        handlePageData(params, total, baseUrl));
};


/**
 * 处理 下一页链接
 * @param params
 * @param extra 什么都可以传进来，多个参数传Object
 * @returns {{}}
 */
const handleNextPage = (params, total, baseUrl) => {
    let currentPage = parseInt((params.page ? params.page : 1), 10); // 当前页
    let perPageCount = parseInt((params.limit ? params.limit : pageSizeType[0]) - 1, 10); // 每页商品数
    let totalPage = _.ceil(total / perPageCount); // 总页数

    if (currentPage >= totalPage) {
        return null;
    }

    return {
        href: handleFilterUrl(baseUrl, params, {page: currentPage + 1}),
        src: '//img10.static.yhbimg.com/product/2014/01/15/11/01fa01614784f6239760f1b749663016f1.jpg?' +
        'imageMogr2/thumbnail/235x314/extent/235x314/background/d2hpdGU=/position/center/quality/90'
    };
};

/**
 * 分页
 * @param  {[type]} total 总页数
 * @param  {[type]} params 筛选条件
 * @param  {[noNextBtn]} 列表是否有下一页的按钮，如果有则实际查询数比传递参数的少一个，入60 => 59
 * @return {[type]}        [description]
 */
const handlePagerData = (total, params, noNextBtn, baseUrl) => {
    const curPage = _.parseInt(params.page || 1);
    const pageSize = _.parseInt(params.limit || pageSizeType[0]) + (noNextBtn ? 0 : -1);
    const totalPage = _.ceil(total / pageSize);
    const tip = {
        start: (curPage - 1) * pageSize + 1,
        end: curPage * pageSize > total ? total : curPage * pageSize,
        total
    };
    let prePage, nextPage;
    const pageUrl = handleFilterUrl(baseUrl, params, {page: '${page}'});

    if (curPage > 1) {
        prePage = {
            url: pageUrl.replace('${page}', curPage - 1)
        };
    }
    if (curPage < totalPage) {
        nextPage = {
            url: pageUrl.replace('${page}', curPage + 1)
        };
    }
    let pages = [];
    let pagesNums = totalPage > 5 ? 5 : totalPage;
    let offsetPage = curPage + _.round(0 - pagesNums / 2); // 遍历页码左侧数字

    if (offsetPage <= 0) {
        offsetPage = 1;
    } else if (offsetPage + pagesNums > totalPage) {
        offsetPage = totalPage - pagesNums + 1;
    }
    const preLimit = offsetPage - 1; // 页码1和遍历页码左侧的距离
    const nextLimit = totalPage - (offsetPage - 1 + pagesNums); // 总页码和遍历页码右侧的距离

    if (preLimit === 1) { // 如果左侧间距为1则显示这个页码
        pagesNums++;
        offsetPage--;
    }
    if (nextLimit === 1) { // 如果右侧间距为1则显示这个页码
        pagesNums++;
    }

    if (preLimit >= 2) {
        pages = _.concat(pages, {
            num: 1,
            url: pageUrl.replace('${page}', 1),
        }, {
            num: '...'
        });
    }
    if (offsetPage <= 0) {
        offsetPage = 1;
    } else if (offsetPage + pagesNums > totalPage) {
        offsetPage = totalPage - pagesNums + 1;
    }

    for (let i = 0; i < pagesNums; i++) {
        pages.push({
            num: offsetPage,
            url: pageUrl.replace('${page}', offsetPage),
            cur: curPage === offsetPage
        });
        offsetPage++;
    }
    if (nextLimit >= 2) {
        pages = _.concat(pages, {
            num: '...'
        }, {
            num: totalPage,
            url: pageUrl.replace('${page}', totalPage),
        });
    }
    return {tip, prePage, nextPage, pages};
};

module.exports = {
    handlePathNavData,
    handleSortData,
    handleFilterData,
    handleOptsData,
    handleNextPage,
    handlePagerData
};