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

 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/>.

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

let url = ''

const express = require('express')
const bodyParser = require('body-parser')
const busboy = require('connect-busboy')
const app = express()

const utils = require('../../utils/utils.js')
const logger = require('../../utils/logger.js')

let donateURL = ''
try {
  donateURL = utils.ReadFile('./data/donateURL')
} catch (e) {
  logger.Log('Couldnt read donate URL file!', logger.GetColor('red'))
}

app.set('view engine', 'ejs')
app.set('views', [
  './modules/qmining/views',
  './sharedViews'
])
app.use(express.static('modules/qmining/public'))
app.use(express.static('public'))
app.use(busboy({
  limits: {
    fileSize: 10000 * 1024 * 1024
  }
}))
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({
  limit: '5mb',
  extended: true
}))
app.use(bodyParser.json({
  limit: '5mb'
}))

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

// to be backwards compatible
app.get('/ask', function (req, 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: '/install',
    to: url + '/moodle-test-userscript/stable.user.js?install'
  },
  {
    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: '/menuClick',
    to: '/'
  },
  {
    from: '/lred',
    to: '/allQuestions.html'
  },
  {
    from: '/donate',
    to: donateURL
  },
  { // to be backwards compatible
    from: '/legacy',
    to: '/allQuestions.html'
  },
  {
    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
  }
]

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

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

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

  routes.forEach((route) => {
    logger.DebugLog(`Added route /${route}`, 'Qmining routes', 1)
    app.get(`/${route}`, function (req, res) {
      logger.LogReq(req)
      res.redirect(`${route}.html`)
    })
  })
}
AddHtmlRoutes(utils.ReadDir('modules/qmining/public'))

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

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

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

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

exports.app = app
exports.setup = (x) => {
  url = x.url
}

logger.Log('Qmining module started', logger.GetColor('yellow'))