server/src/app.ts

import path from 'path'
import bodyParser from 'body-parser'
import express from 'express'
import mongoose from 'mongoose'
import AdminTagController from './controllers/AdminTagController'
import AdminOrganizationController from './controllers/AdminOrganizationController'
import DefaultController from './controllers/DefaultController'
import MediaController from './controllers/MediaController'
import dotenv from 'dotenv'
import DelegateController from './controllers/DelegateController'
import AdminAuthMiddleware from './middlewares/AdminAuthMiddleware'
import DelegateAuthMiddleware from './middlewares/DelegateAuthMiddleware'
import PublicController from './controllers/PublicController'
import cors from 'cors'
import twig from 'twig'
import EmailService from './EmailService'
import ErrorController from './controllers/ErrorController'
import { createProxyMiddleware, Filter, Options, RequestHandler } from 'http-proxy-middleware';
import ExpressRedisCache from 'express-redis-cache'
import Utils from './Utils'

process.env.TZ = "Europe/Paris"

process.on('unhandledRejection', (err) => {
  console.error(err)
  console.log('unhandledRejection!')
  process.exit()
})

dotenv.config({
  path: __dirname + '/../.env'
})

const app: express.Application = express()
const host: string = process.env.HOST === undefined ? '127.0.0.1' : process.env.HOST
const port: number = 8001

if (process.env.DISABLE_TWIG_CACHE === 'true') {
  twig.cache(false)
}

const cacheDuration = {
  home: 3600 * 0.5,
  countdown: 3600 * 2,
  page: 3600 * 3
}

let cache: any = {
  route: (x = null, y = null) => {
    return (req: any, res: any, next: any) => { }
  }
}
if (process.env.DISABLE_CACHE === 'true') {
  cache = {
    route: (x = null, y = null) => {
      return (req: any, res: any, next: any) => {
        next()
      }
    }
  }
} else {
  cache = ExpressRedisCache({
    host: process.env.REDIS_HOST,
    port: process.env.REDIS_PORT,
    auth_pass: process.env.REDIS_PASSWORD,
    prefix: process.env.REDIS_PREFIX
  })
  
  // reset cache
  cache.del('*', (err: any, deleted: any) => {
    console.log('> App: Reset cache', err, deleted)
  })
}

let main = async () => {
  EmailService.init()

  mongoose.connection.on('error', err => {
    console.error(err)
  })

  mongoose.connect(
    process.env.MONGO_URI === undefined ? 'mongodb://root:root@localhost:27017/forumvirt' : process.env.MONGO_URI,
    {
      useNewUrlParser: true,
      useUnifiedTopology: true
    }
  ).then(() => {
    console.log('> App: Connected to mongodb')
  })

  app.set('twig options', {
    allow_async: true,
    strict_variables: false
  })
  app.set('cache', cache)

  app.use(cors())
  app.use(bodyParser.json())

  app.get(
    '/',
    (req, res, next) => {
      if (process.env.OPEN_DATE == null) {
        next()
        return
      }
      // redirect to countdown if needed
      let isProposed = Utils.isStrUsable(req.query, 'only')
      let byPass = req.query.bypass != null
      let target: any = new Date(process.env.OPEN_DATE)
      let now: any = new Date()
      // disable if 'only' key exists in query param
      if (isProposed) {
        res.use_express_redis_cache = false
      }
      // add some padding in seconds
      if (!byPass && !isProposed && target - 4000 > now) {
        return res.redirect('/c')
      } else {
        next()
      }
    },
    cache.route('/home', cacheDuration.home),
    PublicController.home
  )
  app.get('/c', cache.route('/c', cacheDuration.countdown), PublicController.countdown)
  app.get(
    '/association/:slug',
    (req, res, next) => {
      // disable cache if proposed in query
      let isProposed = Utils.isStrUsable(req.query, 'version')
      if (isProposed) {
        res.use_express_redis_cache = false
      }
      next()
    },
    cache.route(cacheDuration.page),
    PublicController.organization
  )
  app.get('/a-propos', PublicController.about)
  app.get('/mentions-legales', PublicController.legals)

  app.get('/icon/:id', DefaultController.viewIcon)
  app.get('/email', DefaultController.sendEmail)
  
  app.use('/admin', express.Router()
    .use(AdminAuthMiddleware.handle)
    .get('/', DefaultController.success)
    .use('/tags', express.Router()
      .get('/', AdminTagController.getMany)
      .post('/', AdminTagController.store)
      .put('/:id', AdminTagController.update)
      .delete('/:id', AdminTagController.destroy)
    )
    .use('/organizations', express.Router()
      .post('/import', AdminOrganizationController.import)
      .get('/', AdminOrganizationController.getMany)
      .get('/:id', AdminOrganizationController.getOne)
      .post('', AdminOrganizationController.store)
      .put('/:id', AdminOrganizationController.update)
      .delete('/:id', AdminOrganizationController.destroy)
      .post('/:id/reset-token', AdminOrganizationController.resetToken)
      .post('/:id/send-email-token', AdminOrganizationController.sendEmailToken)
      .post('/:id/approve', AdminOrganizationController.approve)
      .post('/:id/reject', AdminOrganizationController.reject)
    )
  )

  app.use('/delegate', express.Router()
    .use(DelegateAuthMiddleware.handle)
    .get('/', DelegateController.get)
    .get('/size', DelegateController.getCurrentSize)
    //.post('/test', DelegateController.test)
    .put('/', DelegateController.update)
    .post('/submit', DelegateController.submit)
    .post('/thumbnail', DelegateController.uploadThumbnail())
    .post('/cover', DelegateController.uploadCover())
    .post('/medias', DelegateController.uploadMedias())
    .delete('/', DelegateController.destroy)
  )

  app.use('/proxy-s3', createProxyMiddleware({
    target: 'https://fva-condorcet.s3.fr-par.scw.cloud',
    changeOrigin: true,
    pathRewrite: {
      '^/proxy-s3/': '/'
    },
  }))

  /*
  
    .put('/tags/:id', AdminTagController.update)
    .put('/tags/:id', AdminTagController.destroy)
    .use('/organizations', () => express.Router()
      .get('/', AdminOrganizationController.getMany)
    )
  */

  //app.post('/api/media', MediaController.uploadRoute())
  //app.delete('/api/media/:key', MediaController.delete)
  //const assetsPath: string = process.env.ASSETS_PATH === undefined ? './assets/development' : process.env.ASSETS_PATH

  app.use('/static', express.static(path.resolve('./assets/development')))

  app.get('/500', ErrorController.internalError)

  app.use(ErrorController.handleServerError)

  app.use(ErrorController.notFoundHandler())
  
  app.listen(port, host, () => {
    console.log(`> App: API listening on ${host}:${port}`)
  })
}

main()