mrfrys-node-server/src/modules/qmining/qmining.ts

/* ----------------------------------------------------------------------------

 Question Server
 GitLab: <https://gitlab.com/MrFry/mrfrys-node-server>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.

 ------------------------------------------------------------------------- */

// package requires
import express from 'express'
import bodyParser from 'body-parser'
import busboy from 'connect-busboy'
const app = express()

// other requires
import utils from '../../utils/utils'
import logger from '../../utils/logger'
import auth from '../../middlewares/auth.middleware'
import { SetupData } from '../../server'
import { ModuleType, Request } from '../../types/basicTypes'

// stuff gotten from server.js
let publicdirs = []
let userDB
let nextdir = ''

function GetApp(): ModuleType {
  app.use(
    bodyParser.urlencoded({
      limit: '5mb',
      extended: true,
    })
  )
  app.use(
    bodyParser.json({
      limit: '5mb',
    })
  )
  app.set('view engine', 'ejs')
  app.set('views', ['./src/modules/qmining/views', './src/sharedViews'])
  app.use(
    auth({
      userDB: userDB,
      jsonResponse: false,
      exceptions: [
        '/thanks',
        '/thanks.html',
        '/img/thanks.gif',
        '/favicon.ico',
        '/moodle-test-userscript/stable.user.js',
        '/irc',
        '/donate',
      ],
    })
  )
  publicdirs.forEach((pdir) => {
    logger.Log(`Using public dir: ${pdir}`)
    app.use(express.static(pdir))
  })
  app.use(express.static(nextdir))
  app.use(
    busboy({
      limits: {
        fileSize: 10000 * 1024 * 1024,
      },
    })
  )

  let donateURL = ''
  const donateURLFile = './data/donateURL'

  function loadDonateURL() {
    try {
      donateURL = utils.ReadFile(donateURLFile).replace(/\n/g, '')
    } catch (err) {
      logger.Log('Couldnt read donate URL file!', logger.GetColor('red'))
      console.error(err)
    }
  }

  loadDonateURL()

  utils.WatchFile(donateURLFile, (newData) => {
    logger.Log(`Donate URL changed: ${newData.replace(/\/n/g, '')}`)
    loadDonateURL()
  })

  // --------------------------------------------------------------
  // REDIRECTS
  // --------------------------------------------------------------

  // to be backwards compatible
  app.get('/ask', function(req: Request, res) {
    logger.DebugLog(`Qmining module ask redirect`, 'ask', 1)
    res.redirect(
      `http://api.frylabs.net/ask?q=${req.query.q}&subj=${req.query.subj}&data=${req.query.data}`
    )
  })

  const simpleRedirects = [
    {
      from: '/dataeditor',
      to: 'https://dataeditor.frylabs.net',
    },
    {
      from: '/install',
      to: 'https://qmining.frylabs.net/moodle-test-userscript/stable.user.js',
    },
    {
      from: '/servergit',
      to: 'https://gitlab.com/MrFry/mrfrys-node-server',
    },
    {
      from: '/scriptgit',
      to: 'https://gitlab.com/MrFry/moodle-test-userscript',
    },
    {
      from: '/qminingSite',
      to: 'https://gitlab.com/MrFry/qmining-page',
    },
    {
      from: '/classesgit',
      to: 'https://gitlab.com/MrFry/question-classes',
    },
    {
      from: '/addQuestion',
      to: 'https://dataeditor.frylabs.net',
    },
    {
      from: '/donate',
      to: donateURL,
    },
    {
      from: '/menuClick',
      to: '/',
    },
    {
      from: '/legacy',
      to: '/allQuestions.html',
    },
    {
      from: '/subjectBrowser',
      to: '/allQuestions.html',
    },
    {
      from: '/lred',
      to: '/allQuestions',
    },
    {
      from: '/allqr',
      to: 'http://api.frylabs.net/allqr.txt',
    },
    {
      from: '/allqr.txt',
      to: 'http://api.frylabs.net/allqr.txt',
    },
    {
      from: '/infos',
      to: 'http://api.frylabs.net/infos?version=true&motd=true&subjinfo=true',
      nolog: true,
    },
    {
      from: '/irc',
      to: 'https://kiwiirc.com/nextclient/irc.sub.fm/#qmining',
    },
  ]

  simpleRedirects.forEach((redirect) => {
    app.get(redirect.from, function(req: Request, res) {
      if (!redirect.nolog) {
        logger.LogReq(req)
      }
      logger.DebugLog(`Qmining module ${redirect.from} redirect`, 'infos', 1)

      let target = redirect.to
      if (!redirect.to.includes('?')) {
        target += utils.formatUrl({ query: req.query })
      }

      res.redirect(target)
    })
  })

  // --------------------------------------------------------------

  function AddHtmlRoutes(files) {
    const routes = files.reduce((acc, file) => {
      if (file.includes('html')) {
        acc.push(file.split('.')[0])
        return acc
      }
      return acc
    }, [])

    routes.forEach((route) => {
      logger.DebugLog(`Added route /${route}`, 'Qmining routes', 1)
      app.get(`/${route}`, function(req: Request, res) {
        logger.LogReq(req)
        res.redirect(
          utils.formatUrl({
            pathname: `${route}.html`,
            query: req.query,
          })
        )
      })
    })
  }
  AddHtmlRoutes(utils.ReadDir(nextdir))

  // --------------------------------------------------------------

  app.get('/', function(req: Request, res) {
    res.end('hai')
    logger.LogReq(req)
  })

  app.get('*', function(req: Request, res) {
    res.status(404).render('404')
  })

  app.post('*', function(req: Request, res) {
    res.status(404).render('404')
  })

  return {
    app: app,
  }
}

export default {
  name: 'Qmining',
  getApp: GetApp,
  setup: (data: SetupData): void => {
    userDB = data.userDB
    publicdirs = data.publicdirs
    nextdir = data.nextdir
  },
}