'use strict';
const _ = require('lodash');
const helpers = global.yoho.helpers;
const co = require('bluebird').coroutine;
const cartModel = require('../models/cart');
const headerModel = require('../../../doraemon/models/header');
const userModel = require('../../serverAPI/user');
const addressModel = require('../../serverAPI/user/address');


exports.orderEnsure = (req, res, next) => {
    req.locals.module = 'cart';
    req.locals.page = 'order-ensure';
    req.locals.width750 = true;
    req.locals.title = '确认订单';

    let headerData = headerModel.setNav({
        navTitle: '确认订单',
        navBtn: false
    });

    let uid = req.user.uid;
    let returnUrl = helpers.urlFormat('/cart/index/new');
    let cartType = req.query.cartType || 'ordinary';
    let orderInfo;

    try {
        orderInfo = JSON.parse(req.cookies['order-info']);
    } catch (e) {
        orderInfo = {};
    }

    let cookieCartType = _.get(orderInfo, 'cartType');

    if (cookieCartType) {
        cartType = cookieCartType;
    }

    // 如果传递了code， skn， sku， buy_number 就代表限购商品
    let limitProductCode = req.query.limitproductcode || '';
    let sku = req.query.sku || '';
    let skn = req.query.skn || '';
    let buyNumber = req.query.buy_number || 1;

    if (limitProductCode) {
        headerData.backUrl = req.get('Referer') || returnUrl;
    }

    let order = cartModel.cartPay(uid, cartType, orderInfo, sku, skn, buyNumber, req.xhr);
    let userProfile = userModel.queryProfile(uid);
    let address = addressModel.addressData(uid);

    return Promise.all([order, userProfile, address])
        .then(
            result => {
                order = result[0];
                userProfile = result[1];
                address = result[2];

                if (order.cartUrl) {   // TODO?  普通或者预售商品为空时, BUT WHEN AJAX?
                    return res.redirect(order.cartUrl);
                }

                if (req.xhr) {
                    return res.json(order);
                }

                // 获取用户完整手机号
                let mobile = _.get(userProfile, 'data.mobile', '');
                let orderAddress = _.get(order, 'address', []);
                let addressList = _.get(address, 'data', []);

                orderAddress.length && addressList.forEach(address => { //eslint-disable-line
                    if (address.address_id === orderAddress.address_id) {
                        mobile = address.mobile;
                    }
                });

                let viewData = {
                    orderEnsurePage: true,
                    isOrdinaryCart: cartType !== 'advance',
                    orderEnsure: order,
                    userMobile: mobile
                };

                viewData.pageHeader = headerData;
                viewData.pageFooter = true;

                res.render('order-ensure', viewData);
            }
        )
        .catch(next);

};

/**
 *  下单流程 选择优惠券
 */
exports.selectCoupon = (req, res) => {

    let headerData = headerModel.setNav({
        navTitle: '选择优惠券',
        backUrl: helpers.urlFormat('/cart/new/orderEnsure'),
        navBtn: false
    });

    res.render('select-coupon', {
        module: 'cart',
        page: 'select-coupon',
        title: '选择优惠券',
        selectCouponPage: true,
        pageHeader: headerData,
        pageFooter: true
    });
};

/**
 * 购物车结算--获取优惠券列表
 */
exports.couponList = (req, res, next) => {
    let uid = req.user.uid;

    if (req.xhr) {
        return cartModel.getCouponList(uid)
            .then(data => {
                res.json(data);
            });
    } else {
        return next();
    }

};

/**
 * 购物车输入优惠券码使用优惠券
 */
exports.couponSearch = (req, res, next) => {
    let couponCode = req.body.couponCode || '';
    let uid = req.user.uid;

    co(function* () {
        if (req.xhr) {
            let result = yield cartModel.searchCoupon(uid, couponCode);

            res.json(result);
        } else {
            return next();
        }

    })();
};

exports.selectAddress = (req, res, next) => {
    let uid = req.user.uid;

    return addressModel.addressData(uid)
        .then(address => {
            let moreUrl = req.get('Referer') || '/cart/index/new/orderEnsure'; // 取跳过来的url

            address = address.data;

            // 购物车订单进来，秒杀进来
            if (
                moreUrl.indexOf('/cart/index/new/orderEnsure') !== -1 || 
                moreUrl.indexOf('/cart/index/seckill') !== -1
            ) {
                req.session.addressMore = moreUrl; // TODO: 注意cookie-session
            }

            moreUrl = req.session.addressMore;

            let headerData = headerModel.setNav({
                navTitle: '选择地址',
                navBtn: false,
                backUrl: moreUrl
            });

            res.render('select-address', {
                module: 'cart',
                page: 'select-address',
                pageHeader: headerData,
                pageFooter: true,
                moreUrl,
                address
            });
        });
};