refactor: rewrite ke codebase lama

src/middleware/multer.js

@@ -0,0 +1,124 @@
+const multer = require('multer');
+const path = require('path');
+const fs = require('fs');
+const { response } = require('../helpers/utils/wrapper')
+
+const uploadDir = process.env.NODE_ENV === 'production'
+  ? '/tmp/uploads'
+  : path.join(__dirname, '../uploads');
+
+if (!fs.existsSync(uploadDir)) {
+  fs.mkdirSync(uploadDir, { recursive: true });
+}
+
+const storage = multer.diskStorage({
+  destination: (_req, _file, cb) => cb(null, uploadDir),
+  filename: (_req, file, cb) => {
+    const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1E9);
+    cb(null, uniqueSuffix + path.extname(file.originalname));
+  },
+});
+
+const fileFilter = (req, file, cb) => {
+  const allowedMimeTypes = [
+    'image/jpeg',
+    'image/jpg',
+    'image/png',
+    'application/pdf'
+  ];
+
+  if (allowedMimeTypes.includes(file.mimetype)) {
+    cb(null, true);
+  } else {
+    const errMsg = 'Can only upload images (jpeg, jpg, png) or PDF files';
+    req.fileValidationError = errMsg;
+    cb(new Error(errMsg), false);
+  }
+};
+
+const upload = multer({
+  storage: storage,
+  fileFilter: fileFilter,
+});
+
+// middleware untuk ngechek ukuran file 
+const checkFileSizes = (req, res, next) => {
+  const maxSize = 5 * 1024 * 1024; // 5MB
+  const errors = {};
+  const filesToDelete = [];
+
+  const allFiles = [];
+  // ini untuk 1 file
+  if (req.file) allFiles.push(req.file);
+
+  // ini untuk multiple files
+  if (req.files) {
+    if (Array.isArray(req.files)) {
+      allFiles.push(...req.files);
+    } else {
+      Object.values(req.files).flat().forEach(file => allFiles.push(file));
+    }
+  }
+
+  allFiles.forEach(file => {
+    if (file.size > maxSize) {
+      errors[file.fieldname] = `Ukuran file ${file.fieldname} terlalu besar. Maksimal 5MB`;
+    }
+    filesToDelete.push(file.path);
+  });
+
+  // ini untuk jika ada error maka file yang terupload dihapus
+  if (Object.keys(errors).length > 0) {
+    filesToDelete.forEach(filePath => {
+      if (fs.existsSync(filePath)) fs.unlinkSync(filePath);
+    });
+
+    return res.status(413).json({
+      status: false,
+      data: null,
+      message: errors,
+      code: 413,
+    });
+  }
+
+  next();
+};
+
+
+// middleware untuk error multer
+const multerErrorHandler = (err, req, res, next) => {
+  if (err instanceof multer.MulterError) {
+    if (err.code === 'LIMIT_UNEXPECTED_FILE') {
+      return res.status(400).json({
+        status: false,
+        data: null,
+        message: {
+          [err.field]: `Field '${err.field}' tidak boleh memiliki lebih dari 1 file.`,
+        },
+        code: 400,
+      });
+    }
+
+    return res.status(400).json({
+      status: false,
+      data: null,
+      message: err.message,
+      code: 400,
+    });
+  }
+
+  if (err) {
+    return res.status(400).json({
+      status: false,
+      data: null,
+      message: err.message || 'Error saat upload file',
+      code: 400,
+    });
+  }
+
+  next();
+};
+
+module.exports = upload;
+module.exports.multerErrorHandler = multerErrorHandler;
+module.exports.checkFileSizes = checkFileSizes;