/**
 *
 * @author: Aiden Xu<aiden.xu@yoho.cn>
 * @date: 2016/07/19
 */
'use strict';

const api = global.yoho.API;
const _ = require('lodash');
const model = require('../models/detail');
const searchModel = require('../models/search');

// 频道映射
const CHANNEL_MAP = {
    men: 1,
    women: 2,
    lifestyle: 4
};

// 保存在 gids 和 skns ,最近流览功能
const saveRecentGoodInCookies = (oldSkns, res, addSkns) => {
    // oldSkns = oldSkns ? oldSkns.split(',') : [];
    oldSkns = oldSkns ? JSON.parse(oldSkns) : [];
    oldSkns = _.reject(oldSkns, old => old.product_skn === addSkns ? true : false);
    oldSkns.unshift({product_skn: addSkns, time: (+new Date())});

    // res.cookie('_browseskn', oldSkns.splice(0, 30).join(','), {
    res.cookie('_browseskn_h5', JSON.stringify(oldSkns.splice(0, 20)), {
        maxAge: 2000000000,
        domain: '.yohoblk.com'
    });
};

const vipLe = (key) => {
    return {
        银卡: 1,
        金卡: 2,
        白金: 3,
    }[key];
};

/**
 * 商品详情
 */
const component = {
    index(req, res, next) {
        const pid = req.params[0],
            goodsId = req.params[1],
            cnAlphabet = req.params[2];

        let params = {
            product_id: _.toString(pid),
            uid: req.user.uid || 0
        };

        model.product(params).then(product => {
            product = product.data || {};

            product.formatPrice = product.format_sales_price !== '0' ? product.format_sales_price : product.format_market_price;//eslint-disable-line
            product.isDiscount = product.market_price > product.sales_price;

            res.render('pdetail', {
                module: 'product',
                page: 'detail',
                pid: pid,
                goodsId: goodsId,
                cnAlphabet: cnAlphabet,
                product: product
            });
        }).catch(next);
    },
    product(req, res, next) {
        const pid = req.params[0]; // , goodsId = req.params[1];

        let params = {
            product_id: _.toString(pid),
            uid: req.user.uid || 0
        };

        Promise.all([model.product(params), model.getVipData(params)]).then((result) => {
            let vipPrice = [];

            // 最近浏览存储cookies
            if (_.has(result[0].data, 'product_skn') && !req.user.uid) {
                saveRecentGoodInCookies(req.cookies._browseskn_h5, res, result[0].data.product_skn);
            }

            if (result[0].data.vip) {
                for (let val of result[0].data.vip) {
                    vipPrice.push({
                        level: vipLe(val.caption),
                        price: val.price,
                        currentVip: req.user.uid && parseInt(result[1].data.current_vip_level, 10) === vipLe(val.caption) ? 'active' : ''//eslint-disable-line
                    });
                }

                result[0].data.vipPrice = vipPrice;
            }

            res.json(result[0]);
        }).catch(next);
    },
    intro(req, res, next) {
        let params = {
            productskn: req.query.skn,
            udid: 'f528764d624db129b32c21fbca0cb8d6',
            uid: req.user.uid || ''
        };

        model.intro(params).then(result => {
            res.json(result);
        }).catch(next);
    },

    /**
     * 加入购物车接口
     *
     */
    addToCart(req, res, next) {
        let params = {
            product_sku: req.body.productSku, // 商品SKU
            buy_number: req.body.buyNumber, // 购买数量
            goods_type: req.body.goodsType || 0, // 商品类型，0表示普通商品，1表示加价购商品
            edit_product_sku: req.body.isEdit || 0, // 是否是编辑商品SKU，0表示不是编辑
            selected: 'Y',
            promotion_id: req.body.promotionId || null, // 促销id，默认null（加价购有关）
            uid: req.user.uid || 0,
            shopping_key: global.yoho.cookie.getShoppingKey(req)
        };

        model.addToCart(params).then(result => {
            if (result.code === 200) {
                // 将 shopping_key 写入Cookie
                res.cookie('_SPK', result.data.shopping_key, {
                    maxAge: 86400 * 360
                });
            }
            res.json(result);
        }).catch(next);
    },

    /**
     * 添加收藏/取消收藏
     *
     * @param req
     * @param res
     * @param next
     */
    favorite(req, res, next) {
        let params = {
            uid: req.user.uid || 0,
            type: 'product'
        };

        if (req.body.operation === 'add') {
            params.id = req.body.id;
            params.method = 'app.favorite.add';
        } else if (req.body.operation === 'remove') {
            params.fav_id = req.body.id;
            params.method = 'app.favorite.cancel';
        }

        if (!req.user.uid) {
            // 未登陆
            res.json({
                code: 403
            });

            return;
        }

        model.favorite(params).then(result => {
            res.json(result);
        }).catch(next);
    },

    /**
     * 获取购物车数量
     *
     * @param req
     * @param res
     * @param next
     */
    getCartCount: (req, res, next) => {
        let params = {
            method: 'app.Shopping.count',
            shopping_key: global.yoho.cookie.getShoppingKey(req),
            uid: req.user.uid || 0
        };

        api.get('', params).then(result => {
            res.json(result);
        }).catch(next);
    },

    /**
     * 搜索产品
     *
     * @param req
     * @param res
     * @param next
     */
    search: (req, res, next) => {
        let params = {
            query: req.query.ids,
            limit: 4,
            app_type: 1
        };

        searchModel.products(params).then(result => {
            res.json(result);
        }).catch(next);
    },

    /**
     * 是否支持退换货
     * @param req
     * @param res
     * @param next
     */
    supportRefundExchange: (req, res, next) => {
        let params = {
            product_skn: req.params.skn
        };

        model.refundExchange(params).then(result => {
            res.json(result);
        }).catch(next);
    },

    /**
     * 为你优选
     * @param req
     * @param res
     * @param next
     */
    prefer: (req, res, next) => {
        let udid = req.sessionID;
        let channel = req.query.channel || req.cookies._Channel || 'men';
        let params = {
            udid,
            yh_channel: CHANNEL_MAP[channel] || 1,
            limit: 30,
            page: 1,
            rec_pos: 100003
        };

        model.preferList(params)
            .then((list) => {
                res.json(list);
            }).catch(next);
    }
};

module.exports = component;