const config = require('./../config')
const routes = require('express').Router()
const db = require('knex')(config.database)
const path = require('path')
const utils = require('./../controllers/utilsController')

routes.get('/a/:identifier', async (req, res, next) => {
  const identifier = req.params.identifier
  if (identifier === undefined) {
    return res.status(401).json({ success: false, description: 'No identifier provided' })
  }

  const album = await db.table('albums').where({ identifier, enabled: 1 }).first()
  if (!album) {
    return res.status(404).sendFile('404.html', { root: './pages/error/' })
  }

  const files = await db.table('files').select('name').where('albumid', album.id).orderBy('id', 'DESC')
  let thumb = ''
  const basedomain = config.domain

  for (const file of files) {
    file.file = `${basedomain}/${file.name}`

    const ext = path.extname(file.name).toLowerCase()
    if ((config.uploads.generateThumbnails.image && utils.imageExtensions.includes(ext)) || (config.uploads.generateThumbnails.video && utils.videoExtensions.includes(ext))) {
      file.thumb = `${basedomain}/thumbs/${file.name.slice(0, -ext.length)}.png`

      /*
        If thumbnail for album is still not set, do it.
        A potential improvement would be to let the user upload a specific image as an album cover
        since embedding the first image could potentially result in nsfw content when pasting links.
      */

      if (thumb === '') {
        thumb = file.thumb
      }

      file.thumb = `<img src="${file.thumb}"/>`
    } else {
      file.thumb = `<h1 class="title">${ext}</h1>`
    }
  }

  let enableDownload = false
  if (config.uploads.generateZips) { enableDownload = true }

  return res.render('album', {
    layout: false,
    title: album.name,
    count: files.length,
    thumb,
    files,
    identifier,
    enableDownload
  })
})

module.exports = routes