implented multer to offer endpoints for upload and retrieval of images

src/middlewares/upload.js

@@ -0,0 +1,80 @@
+import multer from 'multer';
+import path from 'path';
+import fs from 'fs';
+import crypto from 'crypto';
+import config from '../config/index.js';
+
+const uploadDir = path.resolve(process.cwd(), config.uploadDir);
+if (!fs.existsSync(uploadDir)) {
+  fs.mkdirSync(uploadDir, { recursive: true });
+}
+
+const storage = multer.diskStorage({
+  destination: (req, file, cb) => {
+    let userPath = req.body.path || '';
+    
+    userPath = path.normalize(userPath).replace(/^(\.\.[\/\\])+/, '');
+  
+    const targetPath = path.join(uploadDir, userPath);
+  
+    if (!targetPath.startsWith(uploadDir)) {
+      return cb(new Error('Invalid path.'));
+    }
+  
+    if (!fs.existsSync(targetPath)) {
+      fs.mkdirSync(targetPath, { recursive: true });
+    }
+  
+    cb(null, targetPath);
+  },
+  
+  filename: (req, file, cb) => {
+    const randomName = crypto.randomBytes(16).toString('hex');
+    const ext = path.extname(file.originalname);
+    cb(null, randomName + ext);
+  }
+});
+
+const fileFilter = (req, file, cb) => {
+  const allowedExtensions = /jpeg|jpg|png|gif/;
+  const allowedMimeTypes = /image\/jpeg|image\/jpg|image\/png|image\/gif/;
+
+  const extname = allowedExtensions.test(path.extname(file.originalname).toLowerCase());
+  const mimetype = allowedMimeTypes.test(file.mimetype);
+
+  if (extname && mimetype) {
+    cb(null, true);
+  } else {
+    cb(new multer.MulterError('LIMIT_UNEXPECTED_FILE', file.fieldname));
+  }
+};
+
+const multerUpload = multer({
+  storage,
+  fileFilter,
+  limits: { fileSize: 1024 * 1024 * 1024 }  // 1GB
+});
+
+const uploadMiddleware = (fieldName, multiple = false) => (req, res, next) => {
+  const uploader = multiple ? multerUpload.array(fieldName) : multerUpload.single(fieldName);
+
+  uploader(req, res, (err) => {
+    if (err instanceof multer.MulterError) {
+      return res.status(400).json({ error: err.message });
+    } else if (err) {
+      return res.status(500).json({ error: 'Internal server error during file upload.' });
+    }
+
+    if (!multiple && !req.file) {
+      return res.status(400).json({ error: `No file uploaded under field "${fieldName}"` });
+    }
+    const result = req.file
+
+    next(result);
+  });
+};
+
+export {
+  fileFilter,
+  uploadMiddleware
+};

src/routes/index.js

@@ -15,7 +15,7 @@ import {
 	sendOkResponse,
     sendResponseNoContent,
 } from '../utils/responses.js'
-import { latitudeRange, longitudeRange, uuid, varChar } from '../validators/expressValidator/customValidators.js'
+import { json, latitudeRange, longitudeRange, uuid, varChar } from '../validators/expressValidator/customValidators.js'
 import { integerRange } from '../validators/expressValidator/customValidators.js'
 import {payloadExpressValidator} from '../validators/expressValidator/payloadExpressValidator.js'
 import { authorizePermission, setToken, authenticateToken, refreshAuthenticate} from '../middlewares/auth.js'
@@ -86,7 +86,7 @@ export default(config) => {
         (req, res, next) => indexController(req, res, next),
         (result, req, res, next) => addLinks(result, req, res, next, hasAddLinks, linkRoutes),
         (result, req, res, _) => sendOkResponse(result, req, res)
-    )
+    );
     
     // User Routes
     /**
@@ -974,7 +974,8 @@ export default(config) => {
             varChar('address').optional({ nullable: true, values: 'falsy' }),
             varChar('description').optional({ nullable: true, values: 'falsy' }),
             latitudeRange('latitude'),
-            longitudeRange('longitude')
+            longitudeRange('longitude'),
+            json('images').optional({ nullable: true, values: 'falsy' }),
         ],
         (req, res, next) => payloadExpressValidator(req, res, next, config),
         (req, res, next) => insertPlaceController(req, res, next, config),
@@ -1012,7 +1013,8 @@ export default(config) => {
             varChar('address').optional({ nullable: true, values: 'falsy' }),
             varChar('description').optional({ nullable: true, values: 'falsy' }),
             latitudeRange('latitude').optional({ nullable: false, values: 'falsy' }),
-            longitudeRange('longitude').optional({nullable: false, values: 'falsy'})
+            longitudeRange('longitude').optional({nullable: false, values: 'falsy'}),
+            json('images').optional({ nullable: true, values: 'falsy' }),
         ],
         (req, res, next) => payloadExpressValidator(req, res, next, config),
         (req, res, next) => modifyPlaceController(req, res, next, config),
@@ -1221,6 +1223,7 @@ export default(config) => {
             uuid('user_uuid'),
             uuid('report_type_uuid').optional({ nullable: false, values: 'falsy' }),
             integerRange('rating', {min: 1, max: 3}),
+            json('images').optional({ nullable: true, values: 'falsy' }),
             varChar('description').optional({ nullable: true, values: 'falsy' }),
         ],
         (req, res, next) => payloadExpressValidator(req, res, next, config),
@@ -1258,6 +1261,7 @@ export default(config) => {
             uuid('user_uuid').optional({ nullable: false, values: 'falsy' }),
             uuid('report_type_uuid').optional({ nullable: false, values: 'falsy' }),
             integerRange('rating', {min: 1, max: 3}).optional({ nullable: false, values: 'falsy' }),
+            json('images').optional({ nullable: true, values: 'falsy' }),
             varChar('description').optional({ nullable: true, values: 'falsy' }),
         ],
         (req, res, next) => payloadExpressValidator(req, res, next, config),

src/routes/uploadRoutes.js

@@ -0,0 +1,29 @@
+import { uploadMiddleware } from '../middlewares/upload.js'; // tu middleware multer
+import { Router } from 'express'
+
+export default(config) => {
+    /**
+    * Express router to mount user related functions on.
+    * @type {Object}
+    * @const
+    * @namespace placeRouter
+    */
+    const router = Router()
+    const hasAddLinks = config.environment !== 'production'
+
+    // Single file upload route
+    router.post(
+        '/upload', 
+        uploadMiddleware('file'), 
+        (result, req, res, next) => addLinks(result, req, res, next, hasAddLinks, linkRoutes),
+        (result, req, res, _) => sendOkResponse(result, req, res));
+
+    // Multiple file upload route
+    router.post(
+        '/upload-multiple', 
+        uploadMiddleware('file', true),
+        (result, req, res, next) => addLinks(result, req, res, next, hasAddLinks, linkRoutes),
+        (result, req, res, _) => sendOkResponse(result, req, res)
+    )
+
+}