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

export class CustomValidationPipe extends ValidationPipe {
  constructor() {
    super({
      whitelist: true,
      forbidNonWhitelisted: true,
      transform: true,
      exceptionFactory: (errors: ValidationError[]) => {
        const messages = errors.map((error) => {
          return Object.values(error.constraints || {}).join(', ');
        });
        return new BadRequestException({
          statusCode: 400,
          message: messages.join('; '),
          error: 'Bad Request',
        });
      },
    });
  }
}