Section 9-Upload images and Image Processing

Author: Boghdady

.vscode/settings.json

@@ -2,10 +2,9 @@
   "separators.enabledSymbols": [
     "Classes",
     "Enums",
-    "Functions",
     "Interfaces",
-    "Methods",
     "Namespaces",
     "Structs"
-  ]
+  ],
+  "cSpell.words": ["uuidv"]
 }

middlewares/uploadImageMiddleware.js

@@ -0,0 +1,24 @@
+const multer = require('multer');
+const ApiError = require('../utils/apiError');
+
+const multerOptions = () => {
+
+  const multerStorage = multer.memoryStorage();
+
+  const multerFilter = function (req, file, cb) {
+    if (file.mimetype.startsWith('image')) {
+      cb(null, true);
+    } else {
+      cb(new ApiError('Only Images allowed', 400), false);
+    }
+  };
+
+  const upload = multer({ storage: multerStorage, fileFilter: multerFilter });
+
+  return upload;
+};
+
+exports.uploadSingleImage = (fieldName) => multerOptions().single(fieldName);
+
+exports.uploadMixOfImages = (arrayOfFields) =>
+  multerOptions().fields(arrayOfFields);

models/brandModel.js

@@ -18,5 +18,20 @@ const brandSchema = new mongoose.Schema(
   { timestamps: true }
 );
 
+const setImageURL = (doc) => {
+  if (doc.image) {
+    const imageUrl = `${process.env.BASE_URL}/brands/${doc.image}`;
+    doc.image = imageUrl;
+  }
+};
+// findOne, findAll and update
+brandSchema.post('init', (doc) => {
+  setImageURL(doc);
+});
+
+// create
+brandSchema.post('save', (doc) => {
+  setImageURL(doc);
+});
 // 2- Create model
 module.exports = mongoose.model('Brand', brandSchema);

models/categoryModel.js

@@ -19,6 +19,22 @@ const categorySchema = new mongoose.Schema(
   { timestamps: true }
 );
 
+const setImageURL = (doc) => {
+  if (doc.image) {
+    const imageUrl = `${process.env.BASE_URL}/categories/${doc.image}`;
+    doc.image = imageUrl;
+  }
+};
+// findOne, findAll and update
+categorySchema.post('init', (doc) => {
+  setImageURL(doc);
+});
+
+// create
+categorySchema.post('save', (doc) => {
+  setImageURL(doc);
+});
+
 // 2- Create model
 const CategoryModel = mongoose.model('Category', categorySchema);
 

models/productModel.js

@@ -80,4 +80,28 @@ productSchema.pre(/^find/, function (next) {
   next();
 });
 
+const setImageURL = (doc) => {
+  if (doc.imageCover) {
+    const imageUrl = `${process.env.BASE_URL}/products/${doc.imageCover}`;
+    doc.imageCover = imageUrl;
+  }
+  if (doc.images) {
+    const imagesList = [];
+    doc.images.forEach((image) => {
+      const imageUrl = `${process.env.BASE_URL}/products/${image}`;
+      imagesList.push(imageUrl);
+    });
+    doc.images = imagesList;
+  }
+};
+// findOne, findAll and update
+productSchema.post('init', (doc) => {
+  setImageURL(doc);
+});
+
+// create
+productSchema.post('save', (doc) => {
+  setImageURL(doc);
+});
+
 module.exports = mongoose.model('Product', productSchema);