/**
 * 频道页面
 * @author: Bi Kai<kai.bi@yoho.cn>
 * @date: 2016/05/09
 */
'use strict';
const _ = require('lodash');
const channelModel = require('../models/channel');
const footerModel = require('../../../doraemon/models/footer_tab'); // 底部tab

const helpers = global.yoho.helpers;

let _renderData = {
    module: 'channel',
    page: 'home',
    homeHeader: {
        searchUrl: helpers.urlFormat('/search', null, 'search')
    },
    maybeLike: true,
    showFooterTab: footerModel.getUrlData('home'),
    pageFooter: true
};

/**
 * 频道页生成函数
 * @param  {[object]} req
 * @param  {[object]} res
 * @param  {[object]} data 自定义数据
 * @return {[type]}
 */
let _channelPage = (req, res, data) => {
    return channelModel.getChannelData({
        gender: data.gender,
        uid: _.toString(req.user.uid)
    }).then(result => {
        _renderData.homeHeader.defaultTerms = result.defaultTerms;

        if (!result.content.length || !result.sideNav.length) {
            res.set('Cache-Control', 'no-cache');
        }

        // result.content = [{
        //     seckill: true,
        //     data: {
        //         title: {
        //             name: '限时秒抢',
        //             title: '限时秒抢',
        //             moreUrl: 'http://m.yohobuy.com'
        //         }
        //     }
        // }].concat(result.content);
        // console.log(result.content[9]);
        res.render('channel', Object.assign({}, _renderData, data, result));
    });
};

/**
 * 频道选择页
 */
let index = (req, res, next) => {
    channelModel.getChannelSwitchData().then((result) => {
        res.render('channel-index', {
            module: 'channel',
            page: 'index',
            title: 'Yoho!Buy 有货',
            searchUrl: helpers.urlFormat('/', null, 'search'),
            pageFooter: true,
            channelList: result[0].channelList,
            yohood: result[0].yohood,
            double11: result[0].double11,
            background: result[1]
        });
    }).catch(next);
};

/**
 * 频道页，根据查询字符串跳转频道中间件
 * @param  {object} req
 * @param  {object} res
 * @param  {Function} next
 * @return {Function}
 */
let switchChannel = (req, res, next) => {
    let channel = req.yoho.channel;

    // 如果查询字符串设置了 go 参数，跳转到 cookie 中设置的频道页
    if (req.query.go && channel) {
        return res.redirect('/' + channel);
    }

    // 设置浏览器缓存5分钟 300000ms
    // res.set('Expires', (new Date(_.now() + 300000)).toGMTString());
    next();
};

/**
 * 男生首页
 */
let boys = (req, res, next) => {
    _channelPage(req, res, {
        gender: 'boys',
        title: '男生 | Yoho!Buy有货 | 潮流购物逛不停',
        boysHomePage: true
    }).catch(next); // TODO 我们在路由处理的最上层的方法处理catch
};

/**
 * 女生首页
 */
let girls = (req, res, next) => {
    _channelPage(req, res, {
        gender: 'girls',
        title: '女生 | Yoho!Buy有货 | 潮流购物逛不停',
        girlsHomePage: true
    }).catch(next);
};

/**
 * 潮童首页
 */

let kids = (req, res, next) => {
    _channelPage(req, res, {
        gender: 'kids',
        title: '潮童 | Yoho!Buy有货 | 潮流购物逛不停',
        kidsHomePage: true
    }).catch(next);
};

/**
 * 创意生活首页
 */
let lifestyle = (req, res, next) => {
    _channelPage(req, res, {
        gender: 'lifestyle',
        title: '创意生活 | Yoho!Buy有货 | 潮流购物逛不停',
        lifestyleHomePage: true
    }).catch(next);
};

/**
 * 频道页底部 bannel
 * @param  {[object]} req
 * @param  {[object]} res
 * @return {[type]}
 */
let bottomBanner = (req, res, next) => {
    let gender = req.query.gender || 'boys';

    channelModel.getBottomBannerData(gender).then(result => {
        res.send(result);
    }).catch(next);
};

module.exports = {
    switchChannel,
    index,
    boys,
    girls,
    kids,
    lifestyle,
    bottomBanner
};