admin/modules/multer.js

  1. /* ============================================================================ *\
  2. || ########################################################################## ||
  3. || # Auction Software Marketplace          Release: 0.6   Build 0.7         # ||
  4. || # ---------------------------------------------------------------------- # ||
  5. || # License # 35YAHCNR9344X6O666C123AB                                     # ||
  6. || # ---------------------------------------------------------------------- # ||
  7. || # Copyright ©2014–2021 Develop Scripts LLC. All Rights Reserved          # ||
  8. || # This file may not be redistributed in whole or significant part.       # ||
  9. || # ------------- AUCTION SOFTWARE IS NOT FREE SOFTWARE ------------------ # ||
  10. || # http://www.auctionsoftwaremarketplace.com|support@auctionsoftware.com  # ||
  11. || # ---------------------------------------------------------------------- # ||
  12. || ########################################################################## ||
  13. \* ============================================================================ */
  15. /* eslint-disable consistent-return */
  16. /* eslint-disable class-methods-use-this */
  17. const multer = require('multer')
  18. const mime = require('mime')
  19. /**
  20.  * @class class to handle product functions
  21.  */
  22. class multerModule {
  23.     constructor() {
  24.         this.folder = ''
  25.         this.filter = ''
  26.         this.storage = ''
  27.     }
  28.     /**
  29.      * csvFilter
  30.      * @param {req} req request data
  31.      * @param {string} file file data
  32.      * @param {Function} cb call back function
  33.      */
  34.     csvFilter(req, file, cb) {
  35.         // accept csv only
  36.         const fileext = mime.getExtension(file.mimetype)
  37.         if (fileext === 'csv' || fileext === 'xls' || fileext === 'xlsx') {
  38.             cb(null, true)
  39.         } else {
  40.             req.fileValidationError = 'Forbidden extension'
  41.             cb(null, false, req.fileValidationError)
  42.         }
  43.     }
  44.     /**
  45.      * imageFilter
  46.      * @param {req} req request data
  47.      * @param {string} file file data
  48.      * @param {Function} cb call back function
  49.      */
  50.     imageFilter(req, file, cb) {
  51.         // accept image only
  52.         if (!file.originalname.match(/\.(jpg|jpeg|png|gif)$/)) {
  53.             return cb(new Error('Only image files are allowed!'), false)
  54.         }
  55.         cb(null, true)
  56.     }
  58.     noFilter(req, file, cb) {
  59.         cb(null, true)
  60.     }
  61.     /**
  62.      * setupfolder
  63.      * @param {string} folder folder name
  64.      */
  65.     setupfolder(folder) {
  66.         this.storage = multer.diskStorage({
  67.             destination(req, file, cb) {
  68.                 cb(null, `public/uploads/${folder}/`)
  69.             },
  70.             filename(req, file, cb) {
  71.                 const randomtext = `${Date.now()}_${Math.floor(100000 + Math.random() * 900000)}`
  72.                 cb(null, `${file.fieldname}-${randomtext}.${mime.getExtension(file.mimetype)}`)
  73.             },
  74.         })
  75.     }
  76.     /**
  77.      * multer Single upload
  78.      * @param {string} fieldname folder name
  79.      */
  80.     multerSingleUpload(fieldname) {
  81.         if (fieldname === 'lotupload') {
  82.             this.setupfolder('auction')
  83.             this.filter = this.imageFilter
  84.         } else if (fieldname === 'csvs') {
  85.             this.setupfolder('temp')
  86.             this.filter = this.csvFilter
  87.         }
  88.         const upload = multer({
  89.             storage: this.storage,
  90.             fileFilter: this.filter,
  91.             errorHandling: 'manual',
  92.         })
  93.         return upload.single(fieldname)
  94.     }
  95.     /**
  96.      * multer Multiple Upload
  97.      * @param {string} fieldname folder name
  98.      * @param {number} total total images count
  99.      */
  100.     multerMultipleUpload(fieldname, total) {
  101.         if (fieldname === 'ig_lotupload' || fieldname === 'ph_upload') {
  102.             this.setupfolder('product')
  103.             this.filter = this.imageFilter
  104.         }
  105.         const upload = multer({ storage: this.storage, fileFilter: this.filter })
  106.         return upload.array(fieldname, total)
  107.     }
  108. }
  110. module.exports = multerModule