/**
 * 商品详情models
 * @author: xuqi<qi.xu@yoho.cn>
 * @date: 2016/5/6
 */

'use strict';
const utils = '../../../utils';
const _ = require('lodash');
const comment = require('./consult-comment');
const bundle = require('./bundle');
const api = global.yoho.API;
const singleAPI = global.yoho.SingleAPI;
const helpers = global.yoho.helpers;
const productProcess = require(`${utils}/product-process`);

// const SINGLE_TICKETS_SKN = 51335912; // 展览票

module.exports = class extends global.yoho.BaseModel {
    constructor(ctx) {
        super(ctx);
    }

    /**
     * 获取用户数据信息
     * @param  {[string]} uid
     * @return {[array]}
     */
    _getUserProfile(uid) {
        if (!uid) {
            return Promise.resolve({
                code: 200,
                data: {}
            });
        }
        return this.get({
            data: {
                method: 'app.passport.profile',
                uid: uid
            },
            param: {cache: true}
        }).catch(function() {
            return {
                code: 200,
                data: {}
            };
        });
    }

    /**
     * 处理品牌关联店铺信息
     * @param  {array}
     * @return {array}
     */
    _processShopsInfo(data) {
        let enterStore = [];

        _.forEach(data, function(value) {
            let shopInfo = {
                img: value.brand_ico,
                storeName: value.brand_name
            };

            if (value.shop_id) {
                shopInfo.url = helpers.urlFormat('/product/shop', {
                    shop_id: value.shop_id
                });
            } else {
                shopInfo.url = helpers.urlFormat('', null, value.brand_domain);
            }

            enterStore.push(shopInfo);
        });
        return enterStore;
    }

    /**
     * 处理限购商品的有关按钮状态（或取现购买以及底部商品购买按钮）
     * @param  {array} 需要处理的数据
     * @param  {int} 限购商品的关联状态
     * @param  {Boolean} 限购商品是否已开售
     * @return {array}
     */
    _procShowStatus(data, showStatus, isBeginSale) {
        switch (showStatus) {
            case 1: // 开售前/后，立即分享获得限购码（用户未领取限购码）
                // 显示获取限购码按钮
                data.canGetLimitCode = true;

                if (isBeginSale) { // 开售后
                    data.cartInfo.noLimitCode = true;
                } else {
                    data.cartInfo.limitNotForSale = true;
                }
                break;
            case 2: // 开售后，限购码已抢光（用户未领取限购码）
                data.codeEmpty = true;
                data.cartInfo.noLimitCode = true;
                break;
            case 3: // 开售后，商品已经售罄
                data.noLimitGoodsBtn = true;
                data.cartInfo.soldOut = true;
                break;
            case 4: // 开售后，立即购买（用户已领取限购码）
                data.gotCode = true;
                data.cartInfo.canNotBuy = true;
                break;
            case 5: // 开售前，限购码已被抢光（用户未领取限购码）
                data.codeEmpty = true;
                data.cartInfo.limitNotForSale = true;
                break;
            case 6: // 开售前，即将开售（用户已领取限购码）
                data.gotCode = true;
                data.cartInfo.limitNotForSale = true;
                break;
            case 7: // 开售后，用户已经用获得的限购码购买过商品
                data.gotCode = true;
                data.cartInfo.noLimitCode = true;
                break;
            default:
                break;
        }

        return data;
    }

    /**
     * 根据设备类型获得限购商品跳转app的url
     * @param  {string} productCode 限购商品码
     * @param  {string} skn 限购商品skn
     * @return {string} 限购商品跳转url
     */
    _getLimitCodeUrl(productCode, skn, ua) {
        let url = 'yohoapp://yoho.app/openwith?limit_product_code=' + productCode +
            '&product_skn=' + skn;

        let isIphone = String(ua).indexOf('iPhone') >= 0;
        let isIpad = ua.indexOf('iPad') >= 0;

        if (isIphone || isIpad) {
            let params = {};

            params.lp = productCode;
            url = 'yohobuy://' + helpers.urlFormat('/limitpurchase', params);
        }
        return url;
    }

    _getShopsInfo(brandId) {
        if (!brandId) {
            return Promise.resolve([]);
        }
        return api.get({
            data: {
                method: 'app.shop.queryShopsByBrandId',
                brand_id: _.toString(brandId)
            },
            param: {cache: true}
        }).then(shops => {
            if (shops && shops.code === 200) {
                return this._processShopsInfo(shops.data);
            }

            return [];
        });
    }

    _getPromotionInfo(skn) {
        return this.get({
            data: {
                method: 'app.product.promotion',
                product_skn: _.toString(skn)
            },
            params: {cache: true}
        }).then((result) => {
            if (result && result.code === 200) {
                return result.data;
            }

            return {};
        });
    }

    /**
     * [单独获取用户收藏商品状态]
     */
    _getFavorite(productId, uid) {
        if (!uid) {
            return Promise.resolve(false);
        }
        return this.get({
            url: 'favorite',
            data: {
                method: 'app.favorite.isFavoriteNew',
                uid: uid,
                id: productId
            },
            api: singleAPI
        }).then((result) => {
            if (result && result.code === 200) {
                return result.data;
            }

            return false;
        });
    }

    /**
     * [商品获取数据] pagecache重构
     * 可能是已经废弃的代码
     */
    getProductData(data) {
        let finalResult;
        let params = {
            method: 'app.product.data'
        };

        if (data.id) { // 通过 productId 获取商品详情
            Object.assign(params, {
                product_id: _.toString(data.id)
            });
        } else if (data.productSkn) { // 通过 productSkn 获取商品详情
            Object.assign(params, {
                product_skn: _.toString(data.productSkn)
            });
        }

        return this.get({
            data: params,
            param: {
                code: 200,
                cache: true
            }
        }).then(result => {
            if (!result || result.code === 500 || !result.data) {
                return {};
            }
            result = result.data;
            result.goods_id = data.goodsId;
            return Promise.all([
                this._getShopsInfo(_.get(result, 'brand_info.brand_id', 0)),
                comment.getCommentInfo({
                    productId: result.product_id
                }),
                this._getCommonConsult(), // eslint-disable-line
                comment.getConsults(result.product_id, 1, 2),
                bundle.getBundleBySkn(result.product_skn)
            ]).then((info) => {
                finalResult = _detailDataPkg(result, data.ua); // eslint-disable-line
                finalResult.enterStore = info[0];
                finalResult.isStudent = data.isStudent;

                let bundleData = _.get(info[4], 'data', null);

                /* 套装 */
                if (bundleData && _.get(bundleData, 'bundleInfo.discountType', null) === 1) {
                    finalResult.bundleData = {
                        title: '优惠套装',
                        href: helpers.urlFormat('/product/bundle/detail',
                            {skn: result.product_skn, id: result.product_id}),
                        description: '立省￥' + (parseInt(_.get(bundleData, 'bundleInfo.salesPrice', 0), 10) -
                            parseInt(_.get(bundleData, 'bundleInfo.discountPrice', 0), 10)) + '元',
                        productList: productProcess.processProductList(bundleData && bundleData.productList)
                    };
                }

                /* 量贩 */
                if (bundleData && _.get(bundleData, 'bundleInfo.discountType', null) === 2) {
                    finalResult.discountBuy = {
                        num: _.get(bundleData, 'bundleInfo.bundleCount', 1),
                        promotionPhrase: _.get(bundleData, 'bundleInfo.promotionPhrase', '')
                    };
                }

                Object.assign(finalResult.feedbacks, info[1]);

                /* 如果有咨询，显示咨询，否则显示常见问题 */
                if (info[3].total) {
                    finalResult.feedbacks.consultsNum = parseInt(info[3].total, 10);

                    Object.assign(finalResult.feedbacks, {
                        commonConsults: false,
                        consultsNum: parseInt(info[3].total, 10),
                        consults: _.take(info[3].list, 2)
                    });
                } else if (!_.isEmpty(info[2]) && !_.get(info[1], 'feedbacks.consultsNum', 0)) {
                    Object.assign(finalResult.feedbacks, {
                        commonConsults: true,
                        consultsNum: true,
                        consults: _.take(info[2], 2)
                    });
                }

                /* tar add 161129 SEO 优化使用 */
                finalResult.canonical = result.product_url;

                return finalResult;
            });

        });
    }

    /**
     * [商品数据格式化] pagecache重构
     */
    // const _detailDataPkg = (origin, uid, vipLevel, ua) => {
    _detailDataPkg(origin) {
        let dest = {}; // 结果输出

        // 商品名称
        if (!origin.product_name) {
            dest.feedbacks = {};
            return dest;
        }
        dest.goodsName = origin.product_name;

        // 是否是虚拟商品
        dest.virtualGoods = (origin.attribute * 1 === 3);

        // 活动促销短语
        origin.market_phrase && (dest.marketPhrase = origin.market_phrase);

        // 商品促销短语
        origin.sales_phrase && (dest.goodsSubtitle = origin.sales_phrase);

        // 商品标签
        if (origin.tags) {
            let productTags = {};

            _.forEach(origin.tags, function(value) {
                productTags[value] = true;
            });

            dest.tags = productTags;
        }

        // 上市期
        origin.expect_arrival_time && (dest.periodOfMarket = origin.expect_arrival_time);

        // 商品咨询
        dest.feedbacks = {
            consults: [],
            consultsNum: 0
        };

        let consultParams = {
            product_id: origin.product_id
        };

        if (_.has(dest, 'feedbacks.consultsNum')) {
            consultParams.total = dest.feedbacks.consultsNum;
            dest.feedbacks.consultsUrl = helpers.urlFormat('/product/detail/consults', consultParams);
        } else {
            dest.feedbacks.consultsUrl = helpers.urlFormat('/product/detail/consultform', consultParams);
        }

        // 商品评价
        dest.feedbacks.commentsUrl = helpers.urlFormat('/product/detail/comments', {
            product_id: origin.product_id
        });

        // 品牌信息
        if (origin.brand_info) {
            let extra = `?productSkn=${origin.product_skn}&brandId=${origin.brand_info.brand_id}`;

            dest.preferenceUrl = `/product/detail/preference${extra}`;
        }
        dest.brandId = origin.brand_id || 0;

        dest.productSkn = origin.product_skn;
        dest.isLimitBuy = Number(origin.isLimitBuy); // 1 限购商品, 0 非限购商品

        // 商品信息
        if (origin.goods_list.length) {
            let goodsGroup = [];

            // pagecache重构
            _.forEach(origin.goods_list, function(value) {

                // 商品分组
                if (value.images_list) {
                    _.forEach(value.images_list, function(good) {
                        goodsGroup.push({
                            goodsId: value.goods_id,
                            img: good.image_url
                        });
                    });
                }
            });


            // 商品图：多个
            if (goodsGroup.length > 1) {
                let bannerList = [];

                _.forEach(goodsGroup, function(value) {
                    bannerList.push({
                        img: value.img
                    });
                });

                dest.bannerTop = {
                    list: bannerList
                };
            } else if (goodsGroup[0]) {
                dest.bannerTop = {
                    img: goodsGroup[0].img
                };
            }
        }

        // 悬浮的购物车信息
        dest.cartInfo = {
            cartUrl: helpers.urlFormat('/cart/index/index'),
            numInCart: 0,
            goodsInstore: origin.storage_sum
        };

        // 底部简介URL链接
        dest.introUrl = '/product/detail/intro/' + origin.product_skn;
        dest.id = origin.product_id;
        dest.goodsId = origin.goods_id;
        dest.isDepositAdvance = origin.is_deposit_advance === 'Y'; // 是否定金预售
        dest.isSeckill = origin.is_secKill === 'Y'; // 是否秒杀
        dest.isLimitBuy = origin.isLimitBuy; // 是否 限购
        dest.isPresale = Boolean(origin.expect_arrival_time); // 是否普通预售

        // 自定义 属性
        dest.showCoupon = !(
            dest.isDepositAdvance || dest.isSeckill || dest.isLimitBuy || dest.isPresale
        ); // 商品有限购、秒杀、定金预售、普通预售 不显示领券

        // 20170113 要求关闭商品详情页面领券功能
        // dest.showCoupon = false;

        return dest;
    }

    _cartCount(uid, shoppingKey) {
        return this.get({
            data: {
                method: 'app.Shopping.count',
                uid: uid,
                shopping_key: shoppingKey
            }
        }).then((result) => {
            if (result && result.code === 200) {
                let count = result.data.cart_goods_count || 0;

                if (count > 99) {
                    count = '99+';
                }
                return count;
            }
            return 0;
        });
    }

    /**
     * [商品信息格式化异步接口]
     */
    _detailDataPkgAsync(origin, uid, vipLevel, ua) {
        let dest = {}; // 结果输出

        // 用户未登录时
        if (!uid) {
            dest.loginUrl = helpers.urlFormat('/signin.html', {
                refer: helpers.urlFormat('/product/' + origin.product_skn + '.html') // 商品url改版
            });
        }

        // 商品名称
        if (!origin.product_name) {
            dest.feedbacks = {};
            return dest;
        }
        dest.goodsName = origin.product_name;

        // 线下店商品展示限制
        dest.storeGood = origin.store_show_status === 3 || origin.store_show_status === 4;

        // 活动促销短语
        origin.market_phrase && (dest.marketPhrase = origin.market_phrase);

        // 商品促销短语
        origin.sales_phrase && (dest.goodsSubtitle = origin.sales_phrase);

        // 促销信息
        if (origin.promotionBoList) {
            let discountList = [];

            _.forEach(origin.promotionBoList, function(value) {
                discountList.push({
                    text: `【${value.promotionType}】${value.promotionTitle}`
                });
            });

            discountList.length && (dest.goodsDiscount = {
                list: discountList
            });
        }

        // 商品价格
        let goodsPrice = {
            currentPrice: origin.format_sales_price === '0' ? origin.format_market_price : origin.format_sales_price
        };

        if (origin.format_sales_price !== '0' && origin.format_market_price !== origin.format_sales_price) {
            goodsPrice.previousPrice = origin.format_market_price;
        }

        if (origin.student_price) {
            goodsPrice.studentPrice = origin.student_price;
        }

        dest.goodsPrice = goodsPrice;

        if (origin.is_secKill) {
            dest.isSecKill = origin.is_secKill; // 判断秒杀字段
        }

        if (origin.is_deposit_advance) {
            dest.isPresale = Boolean(origin.expect_arrival_time);
            dest.isDepositAdvance = origin.is_deposit_advance; // 判断定金预售字段
        }

        // 商品返回 YOHO 币
        origin.yohoCoinNum && (dest.commodityReturn = origin.yohoCoinNum);

        // VIP 商品价格
        if (origin.vip) {
            let vipList = [];
            let levelList = {
                银卡: 1,
                金卡: 2,
                白金: 3
            };

            _.forEach(origin.vip, function(value) {
                vipList.push({
                    level: levelList[value.caption],
                    text: value.price,
                    currentLevel: (levelList[value.caption] === parseInt(vipLevel, 10))
                });
            });

            vipList.length && (dest.vipLevel = {
                list: vipList
            });

        }

        // 商品信息
        let cartInfo = productProcess.processSkusInfo(origin);
        let soldOut = (origin.storage_sum === 0) || (cartInfo.totalStorageNum === 0); // status
        let notForSale = origin.attribute === 2;
        let preSale = (origin.status === 0 && origin.advance_shelve_time > 0);

        return new Promise((resolve) => {
            // 悬浮的购物车信息新增品牌店铺选项storeUrl字段
            let storeUrl = '';

            if (origin.shop_id) {
                storeUrl = `/shop/${_.get(origin, 'brand_info.brand_domain')}-${_.get(origin, 'shop_id')}.html`;
            }

            // 悬浮的购物车信息
            dest.cartInfo = {
                cartUrl: helpers.urlFormat('/cart/index/index'),
                numInCart: 0,
                goodsInstore: origin.storage_sum,
                storeUrl: storeUrl
            };

            // 显示加入购物车链接
            if (preSale) { // 预售
                dest.cartInfo.preSale = true;
            } else if (soldOut) { // 卖光了
                dest.cartInfo.soldOut = true;
            } else if (notForSale) { // 非卖品
                dest.cartInfo.notForSale = true;
            } else if (origin.is_deposit_advance === 'Y' || origin.is_limit_time_advance === 'Y') { // 定金预售，定金促销
                dest.cartInfo.isDepositAdvance = true;
            } else if (origin.isLimitBuy) { // 限购
                Object.assign(dest.cartInfo, cartInfo, {
                    price: dest.goodsPrice.previousPrice ? dest.goodsPrice.previousPrice : '',
                    salePrice: dest.goodsPrice.currentPrice ? dest.goodsPrice.currentPrice : '',
                });

                return this.get({
                    data: {
                        method: 'app.limitProduct.productStatus',
                        limitProductCode: origin.limitProductCode,
                        uid: uid,
                        product_skn: origin.product_skn
                    },
                    param: {
                        code: 200,
                        cache: true
                    }
                }).then((result) => {
                    if (result.data) {
                        if (!result.data.isLimitBuy) {
                            dest.cartInfo.soldOut = true;
                            return resolve(dest);
                        }

                        // 是否开售
                        let isBeginSale = (result.data.saleStatus === 1);

                        // 限购商品有关的展示状态
                        let showStatus = 1;

                        origin.showStatus && (showStatus = parseInt(result.data.showStatus, 10));

                        // 处理限购商品有关的按钮状态
                        dest = this._procShowStatus(dest, showStatus, isBeginSale);

                        dest.cartInfo.limitProductCode = origin.limitProductCode;
                        dest.cartInfo.limitCodeUrl = this._getLimitCodeUrl(origin.limitProductCode, origin.product_skn, ua); // eslint-disable-line 
                        dest.cartInfo.limitProductPay = helpers.urlFormat('/cart/index/orderEnsure');
                        return resolve(dest);
                    } else {
                        dest.cartInfo.soldOut = true;
                        return resolve(dest);
                    }
                });
            } else if (origin.from === 'detail' &&
                origin.buy_now === 1 &&
                !origin.closeBuyNowButton) { // 显示立即购买和加入购物车两个按钮，closeBuyNowButton 关闭开关
                Object.assign(dest.cartInfo, cartInfo, {
                    price: dest.goodsPrice.previousPrice ? dest.goodsPrice.previousPrice : '',
                    salePrice: dest.goodsPrice.currentPrice ? dest.goodsPrice.currentPrice : '',
                });
                dest.showBuyNow = true;
                dest.cartInfo.addToCartUrl = helpers.urlFormat('/product/buy_' + origin.product_id + '_' +
                        origin.goods_id + '.html');
            } else { // 除了上面商品之外的普通商品
                Object.assign(dest.cartInfo, cartInfo, {
                    price: dest.goodsPrice.previousPrice ? dest.goodsPrice.previousPrice : '',
                    salePrice: dest.goodsPrice.currentPrice ? dest.goodsPrice.currentPrice : '',
                });
                dest.cartInfo.addToCartUrl = helpers.urlFormat('/product/buy_' + origin.product_id + '_' +
                        origin.goods_id + '.html');
            }
            return resolve(dest);
        }).then(result => {
            // 虚拟商品（门票）
            if (origin.attribute * 1 === 3) {
                if (result.cartInfo.addToCartUrl) {
                    result.cartInfo.addToCartUrl = false;
                    result.tickets = result.cartInfo.tickets = true;
                }
                result.ticketsConfirm = helpers.urlFormat('/cart/index/ticketsConfirm');

                // 展览票
                // if (origin.product_skn * 1 === SINGLE_TICKETS_SKN) {
                //     result.single = true;
                // } else {
                //     // 套票
                //     result.package = true;
                // }

                // 购票限制
                // result.cartInfo.limit = 4;

                // 清空活动
                result.goodsDiscount = [];
            }
            result.id = origin.product_id;
            result.goodsId = origin.goods_id;
            if (result.isSecKill === 'Y' && result.cartInfo.totalNum > 0) {
                result.totalNum = 1;
            }
            if (result.storeGood) {
                result.cartInfo.storeGood = true;
            }
            return result;
        });
    }

    /**
     * [商品信息的异步数据获取] (优化)
     */
    getNewProductAsyncData(data) {
        let params = {
            method: 'app.product.data'
        };

        if (data.productSkn) { // 通过 productSkn 获取商品详情
            Object.assign(params, {
                product_skn: _.toString(data.productSkn)
            });
        } else if (data.id) { // 通过 productId 获取商品详情
            Object.assign(params, {
                product_id: _.toString(data.id)
            });
        }
        if (data.uid) {
            params.uid = data.uid;
        }

        params.is_student = data.isStudent ? 1 : 0;

        params.current_vip_level = data.vipLevel;

        // if (!params.is_student) {
        //     params.current_vip_level = data.vipLevel;
        // }

        return this.get({
            data: params,
            param: {
                code: 200,
                cache: true
            }
        }).then(result => {
            if (!result || result.code === 500 || !result.data) {
                return {};
            }
            result = result.data;
            result.goods_id = data.goodsId;

            let apiArray = [
                this._cartCount(data.uid, data.shoppingKey),
                this._detailDataPkgAsync(_.assign(result, {
                    from: data.from,
                    closeBuyNowButton: data.closeBuyNowButton
                }), data.uid, data.vipLevel, data.ua),
                this._getFavorite(result.product_id, data.uid)
            ];

            if (data.bundleType) {
                apiArray.push(bundle.getBundleBySkn(data.productSkn));
            }

            return Promise.all(apiArray).then((res) => {
                let cartCount = res[0];
                let finalResult = res[1];
                let isFavorite = res[2];
                let bundleData = _.get(res[3], 'data', {});

                if (cartCount) {
                    finalResult.cartCount = cartCount;
                }

                finalResult.isCollect = isFavorite;
                if (finalResult.cartInfo) {
                    finalResult.cartInfo.isCollect = isFavorite;
                }
                finalResult.isStudent = data.isStudent;

                let discountBuy = _.find(bundleData, bund => _.get(bund, 'bundleInfo.discountType') === 2);

                /* 量贩 */
                if (bundleData && discountBuy) {
                    let minBuyNum = discountBuy.bundleInfo.bundleCount;
                    let isNotEnough = true;

                    // 是否满足量贩购买要求：剩余商品数量大于量贩最小购买量
                    _.forEach(result.goods_list, goods => {
                        _.forEach(goods.size_list, sizes => {
                            if (sizes.storage_number >= minBuyNum) {
                                isNotEnough = false;
                            }
                        });
                    });

                    if (finalResult.cartInfo && isNotEnough) {
                        finalResult.cartInfo.soldOut = isNotEnough;
                        finalResult.cartInfo.addToCartUrl = false;
                    }

                    finalResult.discountBuy = {
                        num: minBuyNum,
                        promotionPhrase: discountBuy.bundleInfo.promotionPhrase,
                        discount: discountBuy.bundleInfo.discount
                    };
                }

                // 2017电子门票不显示区域
                // let ticketsProps = finalResult.cartInfo.props;

                // _.forEach(ticketsProps, function(value) {
                //     if (value.name === '区域') {
                //         value.ticketHide = true;
                //         value.name = '';
                //     }
                // });
                return finalResult;
            });
        });
    }

    /**
     * [商品信息的异步数据获取]
     * 可能已经废弃的代码
     */
    getProductAsyncData(data) {
        let finalResult;
        let params = {
            method: 'app.product.data'
        };

        if (data.productSkn) { // 通过 productSkn 获取商品详情
            Object.assign(params, {
                product_skn: _.toString(data.productSkn)
            });
        } else if (data.id) { // 通过 productId 获取商品详情
            Object.assign(params, {
                product_id: _.toString(data.id)
            });
        }
        if (data.uid) {
            params.uid = data.uid;
        }

        params.is_student = data.isStudent ? 1 : 0;
        params.current_vip_level = data.vipLevel;

        return this.get({
            data: params,
            param: {
                code: 200,
                cache: true
            }
        }).then(result => {
            if (!result || result.code === 500 || !result.data) {
                return {};
            }

            result = result.data;
            result.goods_id = data.goodsId;
            return Promise.all([
                this._getPromotionInfo(result.product_skn),
                this._getFavorite(result.product_id, data.uid)
            ]).then((res) => {
                result.promotionBoList = res[0];
                let isFavorite = res[1];

                return this._detailDataPkgAsync(result, data.uid, data.vipLevel, data.ua).then(pkg => {  // eslint-disable-line
                    finalResult = pkg;
                    finalResult.isCollect = isFavorite;
                    if (finalResult.cartInfo) {
                        finalResult.cartInfo.isCollect = isFavorite;
                    }
                    finalResult.isStudent = data.isStudent;
                    return finalResult;
                });

            });

        });
    }

    /**
     * 获取默认咨询列表
     */
    _getCommonConsult() {
        let params = {
            method: 'app.consult.common'
        };

        return this.get({
            data: params,
            param: {code: 200}
        }).then(result => {
            let data = {};

            if (result.data) {
                data = result.data;
            }

            return data;
        });
    }

    /**
     * [根据商品SKN获取商品的简要信息]
     * @param  {[array]} skns [skns]
     * @return {[type]}
     */
    _productInfoBySkns(skns) {
        // 调用搜索接口
        let param = {
            method: 'app.search.li',
            query: skns.join(' '),
            limit: skns.length,
            order: 's_t_desc'
        };

        return this.get({
            data: param,
            param: {cache: true}
        });
    }

    getLimitProductData(uid, limitProductCode) {
        const param = {
            method: 'app.limitProduct.limitProductDetail',
            limitProductCode,
            uid
        };

        return this.get({data: param}).then(result => {
            if (!(result && result.data)) {
                return Promise.reject(result);
            }

            let obj = {};

            // if (!result.data.hasOwnProperty('attachment')) {
            //     return
            // }

            obj.price = result.data.price;
            obj.name = result.data.productName;
            obj.releaseDate = `${result.data.saleTime}发售`;
            obj.banner = helpers.image(result.data.defaultUrl, 750, '');
            obj.description = result.data.description;
            obj.attaches = [];

            result.data.attachment = result.data.attachment || [];

            for (let item of result.data.attachment) {
                if (item.isDefault === 1) { // 排除默认图片
                    continue;
                }

                let attach = {};

                switch (item.attachType) {
                    case 1:
                        attach.isImg = true;
                        attach.attachUrl = helpers.image(item.attachUrl, 750, '');
                        attach.attachName = item.intro;
                        attach.intro = item.intro;
                        break;
                    case 2:
                        attach.isVideo = true;
                        attach.attachUrl = item.attachUrl;
                        attach.img = helpers.image(item.intro, 750, '');
                        break;
                    case 3:
                        attach.isText = true;
                        attach.intro = item.intro;
                        break;
                    default:
                        break;
                }
                attach.orderBy = item.orderBy;

                obj.attaches.push(attach);
            }

            if (obj.attaches.length > 1) {
                obj.attaches.sort((v1, v2) => {
                    return v2.orderBy - v1.orderBy;
                });
            }

            return obj;
        });
    }
};