import {
  IsString,
  IsOptional,
  IsEnum,
} from 'class-validator';
import { ConversationCategory } from './conversation.dto';

// ==================== 查询统计 DTO ====================

export class QueryStatsDto {
  @IsString()
  @IsOptional()
  startDate?: string;

  @IsString()
  @IsOptional()
  endDate?: string;

  @IsEnum(ConversationCategory)
  @IsOptional()
  category?: ConversationCategory;
}