'use strict'

const express = require('express')
const fs = require('fs')
const path = require('path')
const sqlite3 = require('sqlite3').verbose()
const app = express()
const port = 3000
const repositoryDirectory = './user-content-access/'

app.set('view engine', 'pug')
app.set('views', './views')

const directoryExists = (path) => fs.existsSync(path) ? fs.statSync(path).isDirectory() : false

app.get('*', (req, res) => {
  
  if (req.originalUrl.indexOf('\0') == -1) {
    
    let pathNormalized = path.normalize(req.path)

    let pathArray = pathNormalized.split('/').filter((x) => x.length > 0)
    
    let pathIsValid = (pathArray) => {
      if (pathArray.length > 0) {
        if (directoryExists(repositoryDirectory + pathArray[0])) {
          if (directoryExists(repositoryDirectory + pathArray.join('/'))) {
            return true
          }
          else return false
        }
        else return false
      }
      else return false
    }
    
    if (pathIsValid(pathArray)) {
      
      var dirList = fs.readdirSync(repositoryDirectory + pathArray.join('/'), (err, files) => {
        if (err)
          console.log(err)
        else
          return files
      })
      
      res.render('index', {
        dirList: dirList
      })
    }

    else res.send('Repository does not exist.')

  }

  else res.send('Null byte found in url. Nice try :)')
})

app.listen(port, () => {
  console.log(`Example app listening on port ${port}`)
})