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

'use strict';
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

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

/**
 * 处理品牌关联店铺信息
 * @param  {array}
 * @return {array}
 */
const _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/index/brand', {
                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}
 */
const _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
 */
const _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;
};

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

        return [];
    });
};

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

        return {};
    });
};

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

        return {};
    });
};

/**
 * [商品获取数据] pagecache重构
 */
let 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 api.get('', params, {
        code: 200,
        cache: true
    }).then(result => {
        if (result.code === 500 || !result.data) {
            return {};
        }
        result = result.data;
        result.goods_id = data.goodsId;
        return Promise.all([
            _getShopsInfo(_.get(result, 'brand_info.brand_id', 0)),
            comment.getCommentInfo({
                productId: result.product_id
            }),
            _getCommonConsult(),
            comment.getConsults(result.product_id, 1, 2),
            bundle.getBundleBySkn(result.product_skn)
        ]).then((info) => {
            finalResult = _detailDataPkg(result, data.ua);
            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}),
                    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.discount = _.get(bundleData, 'bundleInfo.bundleCount', 1);
            }

            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)
                });
            }
            return finalResult;
        });

    });
};

/**
 * [商品数据格式化] pagecache重构
 */
// const _detailDataPkg = (origin, uid, vipLevel, ua) => {
const _detailDataPkg = (origin, ua) => {
    let dest = {}, // 结果输出
        thumbImageList = [],
        colorGroup = {},
        sizeGroup = [],
        totalStorageNum = 0;

    // 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);

    // 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.productSkn = origin.product_skn;

    // 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;


    return dest;
};

/**
 * [商品信息的异步数据获取]
 */
let getProductAsyncData = (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)
        });
    }
    if (data.uid) {
        params.uid = data.uid;
    }

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

    return api.get('', params, {
        code: 200,
        cache: true
    }).then(result => {
        if (result.code === 500 || !result.data) {
            return {};
        }
        result = result.data;
        result.goods_id = data.goodsId;
        return Promise.all([_getPromotionInfo(result.product_skn), _getFavorite(result.product_id, data.uid)]).then((res) => {
            result.promotionBoList = res[0];
            var isFavorite = res[1];

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

        });

    });
};

/**
 * [商品信息格式化异步接口]
 */
let _detailDataPkgAsync = (origin, uid, vipLevel, ua) => {
    let dest = {}, // 结果输出
        thumbImageList = [],
        colorGroup = {},
        sizeGroup = [],
        totalStorageNum = 0;

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

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

    // 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;
    }

    dest.goodsPrice = goodsPrice;

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

    if (origin.is_secKill) {
        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
    if (origin.goods_list.length) {
        let goodsGroup = [],
            sizeName = '',
            colorList = [],
            sizeList = {},
            allSizeList = {},
            colorStorageGroup = {},
            colorStorageNum = 0;

        _.forEach(origin.goods_list, function(value) {
            // 未上架也显示
            // if (value.status === 0) {
            //     return;
            // }

            colorStorageNum = 0;

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

            // 商品的尺码列表
            colorStorageGroup[value.product_skc] = {};
            if (value.size_list) {
                sizeList[value.product_skc] = [];
                _.forEach(value.size_list, function(size) {
                    sizeList[value.product_skc].push({
                        id: size.size_id,
                        skuId: size.product_sku,
                        goodsId: value.goods_id,
                        colorId: value.color_id,
                        name: size.size_name,
                        sizeNum: size.storage_number
                    });

                    sizeName = size.size_name;

                    // 所有尺码列表，赋值用于前端展示默认尺码的时候
                    // 判断出没有库存则显示灰色
                    let build = {
                        id: size.size_id,
                        storage: size.storage_number
                    };

                    allSizeList[sizeName] = (allSizeList[sizeName] === null ||
                    typeof allSizeList[sizeName] === 'undefined') ? build : allSizeList[sizeName];
                    colorStorageNum += parseInt(size.storage_number, 10);
                    colorStorageGroup[value.product_skc][sizeName] = parseInt(size.storage_number, 10);
                });

                // 颜色分组
                colorList.push({
                    id: value.color_id,
                    skcId: value.product_skc,
                    name: value.color_name,
                    colorNum: colorStorageNum
                });
            }

            // 缩略图
            thumbImageList.push({
                img: helpers.image(value.color_image, 60, 60)
            });

            // 商品库存总数
            totalStorageNum += _.toNumber(colorStorageNum);
        });

        // 遍历所有尺码，构建颜色显示数据
        let i = 1;

        sizeGroup[0] = {
            size: []
        };
        _.forEach(allSizeList, (value, key) => {
            // 默认尺码
            sizeGroup[0].size.push({
                name: key,
                sizeNum: _.toNumber(value.storage) > 0 ? true : false,
                id: value.id
            });

            colorGroup[i] = {
                color: []
            };

            // 各个颜色的尺码, 每行显示一个尺码对应的颜色
            _.forEach(colorList, (colorArr) => {
                let tempColorArr = _.cloneDeep(colorArr);

                if (colorStorageGroup[tempColorArr.skcId] &&
                    colorStorageGroup[tempColorArr.skcId][key]) {
                    tempColorArr.colorNum = colorStorageGroup[tempColorArr.skcId][key];
                } else {
                    tempColorArr.colorNum = 0;
                }
                colorGroup[i].color.push(Object.assign({}, tempColorArr));
            });
            colorGroup[i].id = value.id;

            ++i;
        });

        colorGroup[0] = {
            color: []
        };

        // 遍历所有颜色, 构建尺码显示数据
        i = 1;
        _.forEach(colorList, function(value) {
            // 各个尺码的颜色， 每行显示一个颜色的对应尺码
            sizeGroup[i] = {
                size: sizeList[value.skcId],
                colorId: value.skcId
            };

            // 默认颜色
            colorGroup[0].color.push(value);
            ++i;
        });
    }
    let soldOut = (origin.storage_sum === 0) || (totalStorageNum === 0); // status
    let notForSale = origin.attribute === 2;

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

    // 显示加入购物车链接
    if (!soldOut && !notForSale || origin.isLimitBuy) {
        _.orderBy(colorGroup);
        Object.assign(dest.cartInfo, {
            productId: origin.product_id,
            thumbs: thumbImageList,
            name: dest.goodsName || '',
            price: dest.goodsPrice.previousPrice ? dest.goodsPrice.previousPrice : '',
            salePrice: dest.goodsPrice.currentPrice ? dest.goodsPrice.currentPrice : '',
            totalNum: totalStorageNum,
            colors: _.toArray(colorGroup),
            sizes: sizeGroup
        });

        // 限购商品
        if (origin.isLimitBuy) {
            return api.get('', {
                method: 'app.limitProduct.productStatus',
                limitProductCode: origin.limitProductCode,
                uid: uid,
                product_skn: origin.product_skn
            }, {
                code: 200,
                cache: true
            }).then((result) => {
                if (result.data) {
                    if (!result.data.isLimitBuy) {
                        dest.cartInfo.soldOut = true;
                        return callback();
                    }

                    // 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 = _procShowStatus(dest, showStatus, isBeginSale);

                    dest.cartInfo.limitProductCode = origin.limitProductCode;
                    dest.cartInfo.limitCodeUrl = _getLimitCodeUrl(origin.limitProductCode, origin.product_skn, ua);
                    dest.cartInfo.limitProductPay = helpers.urlFormat('/cart/index/orderEnsure');
                    return callback();
                } else {
                    dest.cartInfo.soldOut = true;
                    return callback();
                }

            });
        } else {
            dest.cartInfo.addToCartUrl = helpers.urlFormat('/product/buy_' + origin.product_id + '_' +
                origin.goods_id + '.html');
            return callback();
        }
    } else if (notForSale) {
        dest.cartInfo.notForSale = true;
        return callback();
    } else if (soldOut) {
        dest.cartInfo.soldOut = true;
        return callback();
    }

    function callback() {
        // 虚拟商品（门票）
        if (origin.attribute * 1 === 3) {
            dest.tickets = true;
            dest.ticketsConfirm = helpers.urlFormat('/cart/index/ticketsConfirm');

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

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

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

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

        return [];
    });
};


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

    return api.get('', params, {
        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]}
 */
let _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 api.get('', param, {
        cache: true
    });
};

module.exports = {
    getProductData,
    getProductAsyncData,
    getUserProfile: _getUserProfile,
    productInfoBySkns: _productInfoBySkns
};