/**
 * 频道页面 model
 * @author: Bi Kai<kai.bi@yoho.cn>
 * @date: 2016/05/09
 */
'use strict';
const _ = require('lodash');
const API = require('../../../library/api');
const sign = require('../../../library/sign');
const camelCase = require('../../../library/camel-case');

const api = new API();

const processFloor = (list) => {
    const formatData = {};

    list = list || [];
    _.forEach(list, (floor) => {

        // FIXME 楼层数据处理有问题
        formatData[_.camelCase(floor.template_name)] = floor.data; // 接口数据格式化，键使用驼峰写法
    });
    return formatData;
};

/**
 * 处理侧边栏数据
 * @param  {[array]} list
 * @return {[array]}
 */
const processSideBar = (list) => {
    const formatData = [];
    let offset = 0; // 分割数组用到的游标

    _.forEach(list, (item, i) => {
        item = camelCase.listCamelCase(item);

        if (item.sub) {
            let sub = [{
                sortName: '逛',
                sortNameEn: 'TrendFinder',
                back: true,
                isSelect: false,
                bgColor: '#000'
            }];

            _.forEach(item.sub, (s) => {
                s = camelCase.listCamelCase(s); // 子菜单键名驼峰化
                sub.push(s);
            });
            item.sub = sub;
        }

        // 如果有分隔符，分割数组
        if (item.separativeSign === 'Y') {
            formatData.push(list.slice(offset, i));
            offset = i;
        }
    });

    // 数组被分割剩余的部分
    formatData.push(list.slice(offset));
    return formatData;
};

/**
* 获取频道页面资源位
*/
const getChannelResource = (gender) => {
    gender = gender || '1,3';

    return api.get('operations/api/v5/resource/home', sign.apiSign({
        new_device: true, // eslint-disable-line
        gender: gender,
        content_code: '8512bf0755cc549ac323f852c9fd945d', // eslint-disable-line
        page: 1,
        limit: 30
    })).then(result => {
        result = JSON.parse(result);

        if (result.code === 200) {
            return processFloor(result.data.list);
        } else {
            return result;
        }
    });
};

const getLeftNav = (guangChoosed) => {
    guangChoosed = guangChoosed || 'all';

    return api.get('operations/api/v6/category/getCategory', sign.apiSign({})).then(result => {
        result = JSON.parse(result);

        if (result.code === 200) {
            return processSideBar(result.data);
        } else {
            return result;
        }
    });
};

/**
 * 获取频道页面数据
 * @param  {[object]} params
 * @return {[object]}
 */
exports.getChannelDate = (params) => {
    var channelData = {};

    return Promise.all([getChannelResource(params.gender), getLeftNav()]).then((data) => {
        channelData.content = data[0]; // 资源位数据
        channelData.sideNav = data[1]; // 侧边栏数据

        return channelData;
    });
};