import { BadRequestException } from '@nestjs/common'

export const imageFileFilter = (
  req: any,
  file: Express.Multer.File,
  callback: (error: Error | null, acceptFile: boolean) => void,
) => {
  if (!file.mimetype.startsWith('image/')) {
    return callback(new BadRequestException('Only image files are allowed'), false)
  }

  const allowed = ['image/jpeg', 'image/png', 'image/webp']

  if (!allowed.includes(file.mimetype)) {
    return callback(
      new BadRequestException('Only JPEG, PNG, WEBP images are allowed'),
      false,
    )
  }

  callback(null, true)
}

export const multerImageOptions = {
  fileFilter: imageFileFilter,
  limits: { fileSize: 5 * 1024 * 1024 }, // 5MB
}