/**
 * search controller
 * @author: wsl<shuiling.wang@yoho.cn>
 * @date: 2016/7/21
 */

'use strict';
const mRoot = '../models';
const headerModel = require('../../../doraemon/models/header');
const searchModel = require(`${mRoot}/search`);
const _ = require('lodash');
const helpers = global.yoho.helpers;

// 搜索落地页
const list = (req, res, next) => {
    let params = Object.assign({}, req.query);
    let title = '';
    let query = req.query.query;
    let isQueryFirstClass = false; // 标识用户搜的是不是一级品类
    let isQuerySecondClass = false; // 标识用户搜的是不是二级品类
    let domain = null;

    params = _.assign({
        isSearch: true,
        cartUrl: helpers.urlFormat('/cart/index/index')
    }, params);

    /* 判断是不是品牌, 是品牌跳到品牌列表页(显示搜索框),判断是不是品类, 是品类加导航标题(不显示搜索框) */
    Promise.all([searchModel.getAllBrandNames(), searchModel.getClassNames()]).then((result) => {
        if (query) {
            _.forEach(result[0], function(obj) {
                if (query === obj.brandDomain) { // 精确查品牌域名
                    domain = query;
                    return false;
                }
                if (query === obj.brandName) { // 精确查品牌名称
                    domain = obj.brandName;
                    return false;
                }

                if (obj.brandDomain.indexOf(query) > 0) { // 模糊查品牌域名
                    domain = obj.brandDomain;
                    return false;
                }
            });

            // 跳转到品牌商品列表页
            if (domain !== null && !params.shop_id) {
                let url = helpers.urlFormat('', {
                    from: 'search',
                    query: query

                }, domain);

                res.redirect(url);
            }

            // 品类名称为空时跳出
            if (!result[1]) {
                return;
            }

            _.forEach(result[1].first, (obj) => {
                // 精确查一级品类
                if (obj === query) {
                    isQueryFirstClass = true;
                    return false;
                }
            });

            _.forEach(result[1].second, (obj) => {
                // 精确查二级品类
                if (obj === query) {
                    isQuerySecondClass = true;
                    return false;
                }
            });
        } else {
            params.query = '';
        }

        // 搜索是一级品类
        if (isQueryFirstClass) {
            title = '全部' + query;
        } else if (isQuerySecondClass) { // 搜索是二级品类
            title = query;
        } else { // 搜索其它内容
            if (query) {
                params.search = {
                    default: query === '' ? false : query,
                    url: ''
                };
            }
            title = '搜索';
        }

        res.render('search/list', {
            module: 'product',
            page: 'search-list',
            pageHeader: headerModel.setNav({
                navTitle: title
            }),
            goodList: params,
            pageFooter: true
        });
    }).catch(next);
};

// ajax 商品数据请求
const search = (req, res, next) => {
    let params = Object.assign({}, req.query);

    searchModel.getSearchData(params).then((result) => {
        res.render('search/page', {
            layout: false,
            new: result
        });
    }).catch(next);
};

/**
 * 筛选
 * @param  {[object]} req
 * @param  {[object]} res
 * @return {[type]}
 */
let filter = (req, res, next) => {
    let params = Object.assign({}, req.query);

    searchModel.getFilterData(params).then((result) => {
        res.render('search/filter', {
            layout: false,
            params: params,
            filter: result
        });
    }).catch(next);
};

module.exports = {
    list,
    filter,
    search
};