'use strict'

/*
 * The main file that sets up the Express instance and node
 *
 * @module server/server
 * @type {Express instance}
 */

global.ENV = process.env.NODE_ENV || 'development'
global.PWD = process.env.NODE_PWD || process.cwd()

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

if (ENV === 'development') {
  // output filename in console log and colour console.dir
  require('midwest/util/console')
  // needed so symlinked modules get access to main projects node_modules/
  require('app-module-path').addPath(p.join(PWD, 'node_modules'))
}

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

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

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

// 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 config = requireDir('./config', { mapKey: (value, key) => _.camelCase(key) })

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

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

const postwares = [
  require('midwest/middleware/ensure-found'),
  // transform and log error
  require('midwest/factories/error-handler')(config.errorHandler),
  // respond
  require('midwest/middleware/responder'),
]

const server = express()

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

_.extend(server.locals, {
  site: require('./config/site'),
})

// override default response render method for
// more convenient use with marko
server.response.render = function (template) {
  const locals = Object.assign({ query: this.req.query }, this.app.locals, this.locals)

  this.send(template(locals))
}

try {
  server.locals.js = require(p.join(PWD, 'public/js.json'))
} catch (e) {}

try {
  server.locals.css = require(p.join(PWD, 'public/css.json'))
} catch (e) {}

// load prewares
server.use(...prewares)

// mount routers
server.use(require('./routers/index'))
server.use('/api', require('./routers/api'))
// server.use('/auth', require('midwest-module-membership/passport/router'));

// load postwares
server.use(...postwares)

// Only start Express server when it is the main module (ie not required by test)
if (require.main === module) {
  server.http = server.listen(config.port, () => {
    console.info(
      `[${chalk.cyan('INIT')}] HTTP Server listening on port ${chalk.magenta(config.port)} (${chalk.yellow(ENV)})`,
    )
  })
}

module.exports = server