import fs from 'fs';
import path from 'path';
import multer from 'multer';

const uploadDir = path.join(process.cwd(), 'uploads', 'users');
fs.mkdirSync(uploadDir, { recursive: true });

const storage = multer.diskStorage({
  destination: (_req, _file, cb) => cb(null, uploadDir),
  filename: (_req, file, cb) => {
    const ext = path.extname(file.originalname);
    cb(null, `user-${Date.now()}-${Math.round(Math.random() * 1e9)}${ext}`);
  },
});

function fileFilter(_req: unknown, file: Express.Multer.File, cb: multer.FileFilterCallback) {
  if (!file.mimetype.startsWith('image/')) {
    return cb(new Error('Only image files are allowed'));
  }
  cb(null, true);
}

export const uploadUserPhoto = multer({
  storage,
  fileFilter,
  limits: { fileSize: 2 * 1024 * 1024 },
}).single('photo');