/**
 * Created by yoho on 2016-12-21.
 */
'use strict';

const _ = require('lodash');
const helpers = global.yoho.helpers;
const md5 = require('md5');
const logger = global.yoho.logger;

const PROMOTION_TYPE_TAG_MAP = {
    Cashreduce: '满减',         // 满减
    Degressdiscount: '折扣',    // 分件折扣
    Cheapestfree: '满减',       // 满X免1
    Discount: '折扣',           // 打折
    Gift: '赠品',
    Needpaygift: '加价购',
    SpecifiedAmount: '满减',     // X件X元
    FreeShippingCost: '免运费',
    VipFreeShippingCost: '免运费'
};

const GOODS_TYPE_TAG_MAP = {
    gift: '赠品',
    price_gift: '加价购'
};

/**
 * 从用户加入购物车的COOKIE取出购物车凭证
 */
const getShoppingKeyByCookie = (req) => {

    return req.cookies._SPK || '';
};

/**
 * 转换价格
 *
 * @param float|string $price 价格
 * @return float|string 转换之后的价格
 */
const transPrice = (price) => {
    return price ? (price * 1).toFixed(2) : '0.00';
};

/**
 * 生成公开的TOKEN凭证
 *
 * @param string $string 字符串
 * @return string
 */
const makeToken = (str) => {
    return md5(md5(str + '#@!@#'));
};

/**
 * cookie cart-del-list 的数据操作
 * @param req
 * @param res
 * @param addsStr 向删除列表中加入数据
 * @param delId 删除列表中移除某个 id 的产品
 */
const getCartDelList = (req, res, addsStr, delSkuId) => {

    let cartDelListStr = req.cookies['cart-del-list'] || '';
    let isMod = false;
    let cookieDelStr = '';

    try {
        let cartDelList = cartDelListStr ? JSON.parse(cartDelListStr) : [];
        let addList = addsStr ? JSON.parse(addsStr) : null;

        // 追加
        if (addList && addList.length && _.isArray(cartDelList)) {
            isMod = true;
            cartDelList = cartDelList.concat(addList);
        }

        if (delSkuId) {
            isMod = true;
            _.remove(cartDelList, it => {
                return Number(it.productSku) === Number(delSkuId);
            });
        }

        if (isMod) {

            if (cartDelList && cartDelList.length > 0) {
                cookieDelStr = JSON.stringify(cartDelList);
            }

            res.cookie('cart-del-list', cookieDelStr, {
                domain: '.yohobuy.com',
                path: '/'
            });
        }
        return cartDelList;
    } catch (err) {
        logger.error(err);
    }

    return null;
};

/**
 * 购物车商品
 * @param array cartGoods 购物车商品列表
 * @param bool isAdvanceCart 是否是预售购物车（和上市期有关）
 * @param bool inValid 是否是不可用商品（失效商品），默认不是（有效商品）
 * @param bool isOffShelves 是否卖光了, 默认否
 * @param array analysis 第三方数据分析用的
 * @return array 处理之后的购物车商品数据
 */
const formatCartGoods = (cartGoods, isAdvanceCart, inValid, isOffShelves, analysis) => {

    return _.map(cartGoods, (it) => {

        let goods = {
            id: it.product_sku,
            skn: it.product_skn,
            pid: it.product_id,
            brandId: it.brand_id,
            isChecked: it.selected === 'Y',
            productTitle: it.product_name,
            imgCover: it.goods_images ? helpers.image(it.goods_images, 64, 88) : '',
            productColor: it.factory_goods_name,
            productSize: it.size_name,
            productPrice: transPrice(it.last_vip_price), // self::transPrice($value['real_price']);
            productNum: Number(it.buy_number),
            storageNum: Number(it.storage_number),
            isVipPrice: it.sales_price !== it.last_vip_price && it.discount_tag === 'V',
            isStuPrice: it.sales_price !== it.last_vip_price && it.discount_tag === 'S',
            yohoIcon: Number(it.get_yoho_coin) || 0,
            productSubtotal: transPrice(it.last_vip_price * it.buy_number),
            promotionId: it.promotion_id || 0,
            isLimitSkn: it.is_limit_skn === 'Y',  // is_limit_skn=Y 不支持7天无理由退货
            isAdvance: isAdvanceCart
        };

        if (it.min_buy_number) {
            goods.minBuyNumber = Number(it.min_buy_number);

            if(goods.minBuyNumber > 1) {
                goods.tipMessage = goods.minBuyNumber + '件起购';
            }
        }

        // 已下架
        if (isOffShelves) {
            goods.isTipNoStore = true;
            goods.tipMessage = '库存不足';
            goods.isOffShelve = true;
        } else if (!inValid) {  // 有效
            if (goods.productNum > goods.storageNum) {
                goods.isTipNoStore = true; // 是否在结算时候显示库存不足
                goods.tipMessage = '库存不足';
            } else if (goods.storageNum <= 3) {
                goods.tipMessage = '仅剩' + goods.storageNum + '件';
            }
        } else { // 失效商品
            goods.inValid = true;
        }

        // advanceBuy=>是否加价购,soldOut=>失效商品;
        if (!it.goods_type) {
            goods.inValid = true;
        } else if (it.goods_type === 'gift') {  // gift=>是否赠品    && it.isAdvanceBuy
            goods.isGift = true;
            goods.productPrice = transPrice(it.last_price);
            goods.productSubtotal = it.subtotal ? transPrice(it.subtotal) : goods.productPrice;
        } else if (it.goods_type === 'price_gift') { // price_gift=>是否加价购
            goods.isPriceGift = true;
            goods.productPrice = transPrice(it.last_price);
            goods.productSubtotal = it.subtotal ? transPrice(it.subtotal) : goods.productPrice;
        } else if (it.real_price === 0) {    // 免单
            goods.productPrice = transPrice(it.sales_price);
            goods.xForOne = true;

            // 分析用: 商品ID列表
            if (_.isArray(_.get(analysis, 'ids'))) {
                analysis.ids.push(it.product_id);
            }

            // 分析用: CRITEO
            if (_.isArray(_.get(analysis, 'criteo'))) {
                analysis.criteo.push({
                    id: it.product_skn,
                    quantity: Number(it.buy_number),
                    price: it.last_vip_price
                });
            }
        } else {
            // 分析用: 商品ID列表
            if (_.isArray(_.get(analysis, 'ids'))) {
                analysis.ids.push(it.product_id);
            }

            // 分析用: CRITEO
            if (_.isArray(_.get(analysis, 'criteo'))) {
                analysis.criteo.push({
                    id: it.product_skn,
                    quantity: Number(it.buy_number),
                    price: it.last_vip_price
                });
            }
        }

        goods.tag = GOODS_TYPE_TAG_MAP[it.goods_type];

        // 商品类型：预售或普通
        goods.goodsType = isAdvanceCart ? 'advance' : 'ordinary';

        // 上市期
        if (isAdvanceCart && it.expect_arrival_time) {
            goods.preSellDate = it.expect_arrival_time;
        }

        // 商品链接
        // let cnAlphaBet = it.cn_alphabet ? it.cn_alphabet : md5(it.product_name);
        goods.link = helpers.getUrlBySkc(it.product_id, it.goods_id, it.cn_alphabet);

        return goods;
    });
};

/**
 * 购物车统计
 */
const formatShoppingCartData = (sc) => {

    return {
        discountAmount: sc.discount_amount,     // 活动价
        fastShoppingCost: sc.fast_shopping_cost,
        gainYohoCoin: sc.gain_yoho_coin,        // 获赠有货币个数
        goodsCount: sc.goods_count,
        isMultiPackage: sc.is_multi_package,
        lastOrderAmount: (parseFloat(sc.last_order_amount)).toFixed(2),      // 商品金额总计
        orderAmount: sc.order_amount,   // 商品总价
        //  package_list,[],
        promotionFormula: sc.promotion_formula,
        promotionFormulaList: _.map(sc.promotion_formula_list, it => {
            return {
                promotion: it.promotion,
                promotionAmount: it.promotion_amount
            };
        }),
        selectedGoodsCount: sc.selected_goods_count,
        shippingCost: sc.shipping_cost,
        strDiscountAmount: sc.str_discount_amount,
        strOrderAmount: sc.str_order_amount
    };
};

/**
 * 全局优惠头部信息
 */
const formatPromotionInfos = (infoList) => {
    return _.map(infoList, it => {
        return {
            cutdownAmount: it.cutdown_amount,
            promotionId: it.promotion_id,
            promotionTitle: it.promotion_title,
            promotionType: it.promotion_type,
            tag: PROMOTION_TYPE_TAG_MAP[it.promotion_type]
        };
    });
};

/**
 * 过时商品
 * offShelvesList 过时商品列表
 *
 */
const formatOffShelves = (offShelvesList, isAdvanceCart, analysis) => {
    return formatCartGoods(offShelvesList, isAdvanceCart, false, true, analysis);
};

/**
 * 售罄商品
 */
const formatSoldOuts = (soldOutsList, isAdvanceCart, analysis) => {
    return formatCartGoods(soldOutsList, isAdvanceCart, false, false, analysis);
};

/**
 * 格式化单个加价购商品
 */
const formatPriceGiftOne = (it) => {

    let gift = {
        // isShowGift: isGift, // 控制是否显示赠品
        // isFold: true, // 控制是否[展开]
        promotionId: it.promotion_id,
        promotionTitle: it.promotion_title.replace('￥', '¥'), // + '(注：您看到的商品可能因为下单时间差已售完)',  // subjoinType
        maxSelectNumber: it.max_select_number,
        promotionType: it.promotion_type,
        tag: PROMOTION_TYPE_TAG_MAP[it.promotion_type],
        isGift: it.promotion_type === 'Gift',
        isPriceGift: it.promotion_type === 'Needpaygift'
    };

    gift.goodsList = _.map(it.goods_list, (g) => {

        let goods = {
            id: g.product_id,
            skn: g.product_skn,
            subjoinTitle: g.product_name,
            imgCover: g.goods_images ? helpers.image(g.goods_images, 65, 90) : '',
            subjoinPrice: transPrice(g.last_price),
            marketPrice: gift.isGift ? '' : transPrice(g.market_price),
            yohoIcon: 0,
            isGift: gift.isGift,
            isPriceGift: gift.isPriceGift
        };

        // 商品链接
        if (g.goods_id) {
            // let cnAlphaBet = g.cn_alphabet ? g.cn_alphabet : md5(g.product_name);
            goods.subjoinLink = helpers.getUrlBySkc(g.product_id, g.goods_id, g.cn_alphabet);
        } else {
            let uri = `/product/show_${g.product_id}_${g.product_skn}/${makeToken(g.product_skn)}.html`;

            goods.subjoinLink = helpers.urlFormat(uri, null, 'item');
        }

        return goods;
    });

    return gift;
};

/**
 * 可选加价购
 * isGift 是否是赠品：true-赠品
 */
const formatPriceGifts = (giftList) => {

    return _.map(giftList, (it) => {
        return formatPriceGiftOne(it);
    });
};

/**
 * 购物车赠品
 */
/* const formatGifts = (giftList) => {
    return formatPriceGifts(giftList);
};*/

const checkGoodsIsSel = (goodsList, promotionId, selectedGiftsList) => {

    return _.map(goodsList, goods => {

        _.forEach((selectedGiftsList || []), gift => {

            if (goods.id === gift.id && promotionId === gift.promotionId) {
                goods.isCheckedGift = true;
                goods.checkedGiftPid = gift.pid;
                goods.checkedGiftSkn = gift.skn;
                return;
            }
        });

        return goods;
    });
};

/**
 * 格式化promotion 里的数据
 */
const formatPromotion = (it, selectedGiftsList) => {

    let status = Number(it.status);
    let info = {
        status: status,

        // "status": 0, // 状态 0 未满足 10 已满足 [20 售光 30 更换 ]
        conditionUnit: it.condition_unit,   // 0满足,1 件,2金额
        conditionValue: it.condition_value,
        giftPrice: it.gift_price,   // 赠品或加价购商品价格
        giftGoodsList: formatCartGoods(it.gift_goods_List),  // 可供选择的赠品或加价购商品列表
        promotionId: it.promotion_id, // 促销id
        promotionTitle: it.promotion_title, // "已满足[满30减10-dev30]",
        promotionType: it.promotion_type,  // 促销类型
        // list.yohobuy.com?psp_id=10408
        promotionPageUrl: helpers.urlFormat('', { psp_id: it.promotion_id }, 'list'),
        tag: PROMOTION_TYPE_TAG_MAP[it.promotion_type],

        isGift: it.promotion_type === 'Gift',
        isPriceGift: it.promotion_type === 'Needpaygift',
        isNotReach: status === 0,   // 未满足
        isReach: status === 10 || status === 30 || status === 20,     // 满足条件
        isEmpty: status === 20,     // 已售完
        isSelected: status === 30   // 已选择，可更换
    };

    // 判断赠品/加价购商品，是否被选中
    info.giftGoodsList = checkGoodsIsSel(info.giftGoodsList, info.promotionId, selectedGiftsList);

    function toDecimal(x) {
        var original = Math.round(Math.abs(x) * 100) / 100;
        var s = original.toString();
        var rs = s.indexOf('.');

        if (rs < 0) {
            rs = s.length;
            s += '.';
        }
        while (s.length <= rs + 2) {
            s += '0';
        }
        return s;
    }

    if (info.isNotReach) {

        let tipTxtMoney = `${ toDecimal(info.conditionValue)}`;

        let tipTxt = `${ -(Math.round(parseFloat(info.conditionValue) * 100) / 100)}`;

        if (info.conditionUnit === 1) {
            tipTxt += '件';
        } else if (info.conditionUnit === 2) {
            tipTxt = tipTxtMoney + '元';
        }

        tipTxt = '<span style=\'color:#ff575c\'>' + tipTxt + '</span>';
        info.promotionTitle = '还差' + tipTxt + '满足&nbsp;&nbsp;&nbsp;' + info.promotionTitle;
    } else if (info.isReach) {
        info.promotionTitle = '已满足&nbsp;&nbsp;&nbsp;' + info.promotionTitle;
    }

    if (info.giftGoodsList) {
        info.giftGoodsListStr = JSON.stringify(info.giftGoodsList);
    }
    return info;
};

/**
 * 优惠池头部优惠信息列表
 */
const formatPoolPromotionInfos = (infoList, selectedGiftsList) => {

    return _.map(infoList, it => {
        return formatPromotion(it, selectedGiftsList);
    });
};

/**
 * 格式化子优惠池信息，返回商品列表，子优惠列表放在每个商品中
 */
const formatSubPromotionPools = (pools, selectedGiftsList, isAdvance) => {

    let goodsListPool = _.map(pools, p => {
        let pool = {
            poolType: p.pool_type,
            isBrandGroup: Number(p.pool_type) === 1,
            goodsList: formatCartGoods(p.goods_list, isAdvance),
            promotionInfos: formatPoolPromotionInfos(p.promotion_list, selectedGiftsList)
        };

        let goodsList = pool.goodsList;

        if (goodsList && goodsList.length) {
            pool.goodsList = _.map(goodsList, g => {
                g.promotionInfos = pool.promotionInfos;
                return g;
            });
        }

        return pool;
    });

    // [ [goods, goods], [goods, ..], [] ] => [goods, goods ]
    // return _.flatten(goodsListPool);

    return goodsListPool;
};

/**
 * giftsList, priceGifts 已选择的赠品和加价购，判断可选的赠品和加价购是否被选中
 * 优惠池
 */
const formatPromotionPools = (pools, selectedGiftsList, isAdvance) => {
    return _.map(pools, p => {

        let pool = {
            poolTitle: p.pool_title,
            poolType: p.pool_type,
            isBrandGroup: Number(p.pool_type) === 1,
            goodsList: formatCartGoods(p.goods_list, isAdvance),
            promotionInfos: formatPoolPromotionInfos(p.promotion_list, selectedGiftsList)
        };

        if (p.sub_pool) {
            pool.subs = formatSubPromotionPools(p.sub_pool, selectedGiftsList, isAdvance);

            /*
            if (_.isArray(goodsWithPromotion) && goodsWithPromotion.length) {
                pool.goodsList = goodsWithPromotion.concat(pool.goodsList);
            }*/
        }

        return pool;
    });
};

const formatCart = (cartDataRet, uid, shoppingKey, cartDelList) => {

    let analysisData = {
        ids: [],
        criteo: []
    };  // 存放分析用的数据

    let result = {
        isEmpty: false,
        isLogin: !!uid,
        searchUrl: helpers.urlFormat('', null, 'search'),   // 搜索链接(再逛逛)
        listUrl: helpers.urlFormat('', null, 'list'),
        viewOrderUrl: helpers.urlFormat('/home/orders', {
            t: new Date().getTime()
        })
    };

    // 未登录
    if (!uid) {
        result.loginUrl = helpers.urlFormat('/signin.html', {
            refer: helpers.urlFormat('/cart/cart')
        });
    }

    // 调用接口，获取购物车数据
    // let cartDataRet = yield cartApi.cartData(uid, shoppingKey);
    let cartData = cartDataRet && cartDataRet.data;
    let advCartData = _.get(cartData, 'advance_cart_data');
    let ordCartData = _.get(cartData, 'ordinary_cart_data');

    // 接口异常时，购物车置为空
    if (!cartData) {
        result.isEmpty = true;

        // UdpLog::info('【购物车】校验参数传递auth', 'uid:' . $uid . 'shoppingKey:' . $shoppingKey);
        return result;
    }

    result.advanceCart = {
        // 未参加活动的商品
        // goodsList: chelper.formatCartGoods(_.get(advCartData, 'goods_list'), true, false, false, analysisData),
        pools: formatPromotionPools(_.get(advCartData, 'goods_pool_list'), null, true),
        offShelves: formatOffShelves(_.get(advCartData, 'off_shelves_goods_list'), true, analysisData),
        soldOuts: formatSoldOuts(_.get(advCartData, 'sold_out_goods_list'), true, analysisData),
        promotionInfos: formatPromotionInfos(_.get(advCartData, 'promotion_info')),
        stat: formatShoppingCartData(_.get(advCartData, 'shopping_cart_data')),
        ensureUrl: helpers.urlFormat('/cart/ensure', {
            type: 2
        })
    };

    // let giftsList = formatPriceGifts(_.get(ordCartData, 'gift_list'));
    // let priceGifts = formatPriceGifts(_.get(ordCartData, 'price_gift'));
    let goodsList = formatCartGoods(_.get(ordCartData, 'goods_list'), false, false, false, analysisData);

    result.ordinaryCart = {
        // 全场可选的赠品
        // gifts: giftsList,   // chelper.formatGifts(_.get(ordCartData, 'gift_list')),
        // 全场可选的加价购商品列表
        // priceGifts: priceGifts, // chelper.formatPriceGifts(_.get(ordCartData, 'price_gift')),
        giftsPromotionInfos: formatPoolPromotionInfos(_.get(ordCartData, 'g_gift_list')),
        priceGiftsPromotionInfos: formatPoolPromotionInfos(_.get(ordCartData, 'g_price_gift_list')),

        // 已选择的全场加价购和赠品
        goodsList: goodsList,

        pools: formatPromotionPools(_.get(ordCartData, 'goods_pool_list'), goodsList),

        offShelves: formatOffShelves(_.get(ordCartData, 'off_shelves_goods_list'), false, analysisData),
        soldOuts: formatSoldOuts(_.get(ordCartData, 'sold_out_goods_list'), false, analysisData),

        promotionInfos: formatPromotionInfos(_.get(ordCartData, 'promotion_info'), goodsList),
        stat: formatShoppingCartData(_.get(ordCartData, 'shopping_cart_data')),
        ensureUrl: helpers.urlFormat('/cart/ensure')
    };

    let advStat = result.advanceCart.stat;
    let ordStat = result.ordinaryCart.stat;

    // 为空
    if (!_.get(advStat, 'goodsCount', 0)) {
        result.advanceCart = false;
    }

    if (!_.get(ordStat, 'goodsCount', 0)) {
        result.ordinaryCart = false;
    }

    if (!result.advanceCart && !result.ordinaryCart) {
        result.isEmpty = true;
    }

    // promotionInfos,  gifts, priceGifts 放一起展示
    let hasGifts = result.ordinaryCart.gifts && result.ordinaryCart.gifts.length;
    let hasPrices = result.ordinaryCart.priceGifts && result.ordinaryCart.priceGifts.length;
    let hasPromo = result.ordinaryCart.promotionInfos && result.ordinaryCart.promotionInfos.length;
    let orderAmount = (parseFloat(_.get(advStat, 'orderAmount', 0)) +
    parseFloat(_.get(ordStat, 'orderAmount', 0))).toFixed(2);
    let lastOrderAmount = (parseFloat(_.get(advStat, 'lastOrderAmount', 0)) +
    parseFloat(_.get(ordStat, 'lastOrderAmount', 0))).toFixed(2);

    if (result.ordinaryCart) {
        result.ordinaryCart.hasGlobalBlock = hasGifts || hasPrices || hasPromo;
    }
    result.stat = {
        orderAmount: orderAmount,
        lastOrderAmount: lastOrderAmount,
        discountAmount: (orderAmount - lastOrderAmount).toFixed(2),
        gainYohoCoin: parseFloat(_.get(advStat, 'gainYohoCoin', 0)) + parseFloat(_.get(ordStat, 'gainYohoCoin', 0)),
        goodsCount: _.get(advStat, 'goodsCount', 0) + _.get(ordStat, 'goodsCount', 0),
        selectedGoodsCount: _.get(advStat, 'selectedGoodsCount', 0) + _.get(ordStat, 'selectedGoodsCount', 0)
    };

    // 移除的商品列表
    result.deleteShop = cartDelList;

    // 普通购物车和预售购物车都为空
    /* if (ordinaryCount === 0 && advanceCount === 0 && ordinarySoldOut && advanceSoldOut) {
     result.isEmpty = true;
     return result;
     }*/

    // 预售和普通都有商品
    if (result.advanceCart && _.get(result, 'advanceCart.stat.selectedGoodsCount') > 0 &&
        result.ordinaryCart && _.get(result, 'ordinaryCart.stat.selectedGoodsCount') > 0) {
        result.stat.mix = true;
    } else if (result.advanceCart && _.get(result, 'advanceCart.stat.selectedGoodsCount') > 0) {
        result.stat.ensureUrl = result.advanceCart.ensureUrl;
    } else if (result.ordinaryCart && _.get(result, 'ordinaryCart.stat.selectedGoodsCount') > 0) {
        result.stat.ensureUrl = result.ordinaryCart.ensureUrl;
    }

    Object.assign(result, {
        ids: _.isArray(analysisData.ids) ? analysisData.ids.join(',') : '',
        criteo: analysisData.criteo || ''
    });

    return result;
};

module.exports = {
    transPrice,
    getShoppingKeyByCookie,
    formatCartGoods,

    // formatGifts,
    formatPriceGiftOne,
    formatPriceGifts,
    formatShoppingCartData,
    formatPromotion,
    formatPromotionPools,
    formatPromotionInfos,
    formatOffShelves,
    formatSoldOuts,
    formatCart,

    getCartDelList
};