/**
 * yohobuy app
 * @author: xuqi<qi.xu@yoho.cn>
 * @date: 2016/4/25
 */
'use strict';

if (process.env.USE_APM === '1' && process.env.NODE_ENV === 'production') {
    require('oneapm');
}

const config = require('./config/common');

global.Promise = require('bluebird');

const yohoLib = require('yoho-node-lib');

// 全局注册library
yohoLib.global(config);

const express = require('express');
const compression = require('compression');
const path = require('path');
const bodyParser = require('body-parser');
const cookieParser = require('cookie-parser');
const favicon = require('serve-favicon');
const _ = require('lodash');
const fp = require('lodash/fp');

const pkg = require('./package.json');
const app = express();
const helpers = global.yoho.helpers;

app.disable('x-powered-by');

// tdk
global.yoho.redis = require('./doraemon/middleware/redis');
const tdk = require('./utils/getTDK');

// NOTE: 这里修改了图片质量的参数
helpers.image = _.flow(helpers.image, fp.replace(/\/quality\/\d*$/, '/quality/90'));

// NOTE：这里修改了参数的个数
helpers.getUrlBySkc = skn => `//item.yohobuy.com/${skn}.html`;

global.middleware = path.resolve('./doraemon/middleware');
global.utils = path.resolve('./utils');
global.appRoot = path.resolve(__dirname);

// 向模板注入变量
app.locals.devEnv = app.get('env') === 'development';
app.locals.isProduction = app.get('env') === 'production';
app.locals.version = pkg.version;

// zookeeper
if (config.zookeeperServer) {
    require('yoho-zookeeper')(config.zookeeperServer, 'pc', app.locals.pc = {}, global.yoho.cache);
}

app.enable('trust proxy');

app.set('subdomain offset', 2);

// 添加请求上下文
app.use(global.yoho.httpCtx());

app.use(global.yoho.hbs({
    extname: '.hbs',
    defaultLayout: 'layout',
    layoutsDir: path.join(__dirname, 'doraemon/views'),
    partialsDir: path.join(__dirname, 'doraemon/views/partial'),
    views: path.join(__dirname, 'doraemon/views'),
    helpers: Object.assign(global.yoho.helpers, require('./utils/helpers'))
}));

app.use(favicon(path.join(__dirname, '/favicon.ico')));
app.use(express.static(path.join(__dirname, 'static')));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
app.use(compression());

// session 设置
require('./doraemon/middleware/yoho-session')(app);

app.use((req, res, next) => {
    req.user = {}; // 全局的用户数据
    req.yoho = {}; // req和res绑定yoho对象，用于传递全局数据, 如req.yoho.channel等

    if (!req.session) {
        req.session = {};
    }

    // req.app.locals = _.merge(req.app.locals, {
    //    pc: {
    //        geetest: {
    //            validation: true
    //        }
    //    }
    // });

    next();
});

// redis seo
app.use((req, res, next) => {
    if (!req.xhr) {
        tdk('url', `${req.hostname}${req.originalUrl}`, req).then(TDKObj =>{
            if (TDKObj[0]) {
                req.tdk = {
                    title: TDKObj[1],
                    keywords: TDKObj[2],
                    description: TDKObj[3]
                };
            }
            next();
        });
    } else {
        return next();
    }
});

const logger = global.yoho.logger;

// dispatcher
try {
    const setYohoData = require('./doraemon/middleware/set-yoho-data');
    const htaccess = require('./doraemon/middleware/htaccess');
    const subDomain = require('./doraemon/middleware/sub-domain');
    const mobileRefer = require('./doraemon/middleware/mobile-refer');
    const mobileCheck = require('./doraemon/middleware/mobile-check');
    const user = require('./doraemon/middleware/user');
    const seo = require('./doraemon/middleware/seo');
    const errorHanlder = require('./doraemon/middleware/error-handler');
    const setPageInfo = require('./doraemon/middleware/set-pageinfo');
    const layoutTools = require('./doraemon/middleware/layout-tools');
    const pageCache = require('./doraemon/middleware/page-cache');
    const devtool = require('./doraemon/middleware/devtools');

    // YOHO 前置中间件
    app.use(setYohoData());
    app.use(htaccess());
    app.use(subDomain());
    app.use(mobileRefer());
    app.use(mobileCheck());
    app.use(user());

    // 请求限制中间件
    if (!app.locals.devEnv) {
        app.use(require('./doraemon/middleware/limiter'));
    }

    app.use(seo());
    app.use(setPageInfo());
    app.use(layoutTools());
    app.use(pageCache());

    if (app.locals.devEnv) {
        app.use(devtool());
    }

    require('./dispatch')(app);

    app.all('*', errorHanlder.notFound()); // 404

    // YOHO 后置中间件
    app.use(errorHanlder.serverError());
} catch (err) {
    logger.error(err);
}

// listener
app.listen(config.port, function() {
    logger.info('yohobuy start');
});