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

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

// use one apm
// if (config.useOneapm) {
//     require('oneapm');
// }

// const heapdump = require('heapdump');
const express = require('express');
const path = require('path');
const bodyParser = require('body-parser');
const cookieParser = require('cookie-parser');
const favicon = require('serve-favicon');
const yohoLib = require('yoho-node-lib');
const pkg = require('./package.json');
const devtools = require('./doraemon/middleware/devtools');
const _ = require('lodash');

const uuid = require('uuid');

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

// 指定 doraemon, utils 目录
global.utils = path.resolve('./utils');
global.doraemon = path.resolve('./doraemon');

exports.createApp = async (app) => {
    // 向模板注入变量
  app.locals.devEnv = app.get('env') === 'development';
  app.locals.proEnv = app.get('env') === 'production';
  app.locals.version = pkg.version;



  const logger = global.yoho.logger;

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

  app.use('/crm/common/ok.jsp', (req, res) => {
    res.status(200).end();
  });
  app.head('*', (req, res) => {
    res.status(200).end();
  });

  app.use(favicon(path.join(__dirname, '/favicon.ico')));
  app.use(express.static(path.join(__dirname, 'public')));

    // 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: _.assign(global.yoho.helpers, require('./utils/helpers'))
  }));

  app.use(bodyParser.json());
  app.use(bodyParser.urlencoded({
    extended: true
  }));
  app.use(cookieParser());


  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.sessionID) {
      req.sessionID = uuid.v4();
    }
    next();
  });

    // dispatcher
  try {
    const user = require('./doraemon/middleware/user');
    const setYohoData = require('./doraemon/middleware/set-yoho-data');
    const errorHanlder = require('./doraemon/middleware/error-handler');
    const setPageInfo = require('./doraemon/middleware/set-pageinfo');
    const ssrApi = require('./doraemon/middleware/ssr-api');
    const layoutTools = require('./doraemon/middleware/layout-tools');


        // YOHO 前置中间件
    app.use(setYohoData());
    app.use(user());
    app.use(setPageInfo());
    app.use(ssrApi());
    app.use(layoutTools());

    await require('./doraemon/middleware/ssr')(app);
    require('./dispatch')(app);

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

        // YOHO 后置中间件
    app.use(errorHanlder.serverError());

        // listener
    app.listen(config.port, function() {
      logger.info(`worker is started at ${config.port}`);
    });
  } catch (err) {
    logger.error(err);
        process.exit(1); //eslint-disable-line
  }

};