import { ApiProperty } from '@nestjs/swagger';

export class ApiResponseDto<T> {
  @ApiProperty({ description: '请求是否成功' })
  success: boolean;

  @ApiProperty({ description: '响应数据', nullable: true })
  data: T | null;

  @ApiProperty({ description: '错误信息', nullable: true })
  message: string | null;

  @ApiProperty({ description: '响应时间戳' })
  timestamp: Date;

  constructor(success: boolean, data: T | null, message: string | null = null) {
    this.success = success;
    this.data = data;
    this.message = message;
    this.timestamp = new Date();
  }

  static success<T>(data: T): ApiResponseDto<T> {
    return new ApiResponseDto(true, data, null);
  }

  static error<T>(message: string): ApiResponseDto<T | null> {
    return new ApiResponseDto<T | null>(false, null, message);
  }
}