import { Injectable, BadRequestException } from '@nestjs/common';

@Injectable()
export class UploadService {
  uploadImage(file: Express.Multer.File) {
    if (!file) {
      throw new BadRequestException('No file uploaded');
    }

    const allowedMimes = ['image/jpeg', 'image/png', 'image/webp'];
    if (!allowedMimes.includes(file.mimetype)) {
      throw new BadRequestException('Only JPG, PNG, and WebP images are allowed');
    }

    const maxSize = 5 * 1024 * 1024;
    if (file.size > maxSize) {
      throw new BadRequestException('File size must not exceed 5MB');
    }

    return { url: '/uploads/' + file.filename };
  }
}