'use strict'

require('babel-register')
/*
 * The main file that sets up the Express instance and node
 *
 * @module server/server
 * @type {Express instance}
 */

// set up some globals (these are also set in Epiphany if not already set)
global.ENV = process.env.NODE_ENV || 'development'
global.PWD = process.env.NODE_PWD || process.cwd()

// make node understand `*.marko` files
require('marko/node-require').install()

// modules > native
const p = require('path')

// modules > 3rd party
const requireDir = require('require-dir')
const _ = require('lodash')
const express = require('express')
const mongoose = require('mongoose')
const passport = require('passport')

// modules > express middlewares
const bodyParser = require('body-parser')
const session = require('express-session')
const cookieParser = require('cookie-parser')

// modules > 3rd party
const chalk = require('chalk')

// modules > warepot
const colorizeStack = require('warepot/util/colorize-stack')

// modules > locals
const initRoutes = require('warepot/util/init-routes')

const config = requireDir('./config')

// make error output stack pretty
process.on('uncaughtException', (err) => {
  console.error(chalk.red('UNCAUGHT EXCEPTION'))
  if (err.stack) {
    console.error(colorizeStack(err.stack))
  } else {
    console.error(err)
  }
  process.exit(1)
})

const prewares = [
  express.static(config.dir.static, ENV === 'production' ? { maxAge: '1 year' } : null),
  bodyParser.json(),
  bodyParser.urlencoded({ extended: true }),
  cookieParser(),
  session(config.session),
  passport.initialize(),
  passport.session(),
]

if (ENV === 'development') {
  // only log requests to console in development mode
  prewares.unshift(require('morgan')('dev'))
  prewares.push(require('express-module-membership/passport/automatic-login'))
}

const postwares = [
  require('warepot/ensure-found'),
  // transform and log error
  require('warepot/error-handler'),
  // respond
  require('warepot/responder'),
  // handle error rendering error
  require('warepot/responder-error'),
]

const routes = [
  ...prewares,
  ...require('./pages'),
  ...require('./services/pomodoros/routes'),
  ...require('express-module-membership/routes'),
  ...postwares
]

const server = express()

// get IP & whatnot from nginx proxy
server.set('trust proxy', true)

server.locals.site = require('./config/site')

if (ENV === 'production') {
  Object.assign(server.locals, {
    js: require(p.join(PWD, 'public/js.json')),
    css: require(p.join(PWD, 'public/css.json'))
  })
}

// override default response render method for
// more convenient use with marko
server.response.render = function (template) {
  const locals = _.extend({}, server.locals, this.locals)

  template.render(locals, this)
}

initRoutes(server, routes)

// mongoose mpromise library is being deprecated
mongoose.Promise = Promise

// connect to mongodb
mongoose.connect(config.mongo.uri, _.omit(config.mongo, 'uri'), (err) => {
  if (err) {
    console.error(err)
    process.exit()
  }

  console.info('[' + chalk.cyan('INIT') + '] Mongoose is connected.')
})

server.listen(config.port, () => {
  console.info('[' + chalk.cyan('INIT') + '] HTTP Server listening on port ' + chalk.magenta('%s') + ' (' + chalk.yellow('%s') + ')', config.port, ENV)
})

module.exports = server