import { IsOptional, IsString, IsBoolean, IsNumber, IsEnum } from 'class-validator';
import { ApiPropertyOptional } from '@nestjs/swagger';
import { Type } from 'class-transformer';
import { CouponType } from '../interface/coupon';

export class FindCouponsDto {
  @IsOptional()
  @IsNumber()
  @Type(() => Number)
  @ApiPropertyOptional({ example: 1, description: 'Page number' })
  page?: number;

  @IsOptional()
  @IsNumber()
  @Type(() => Number)
  @ApiPropertyOptional({ example: 10, description: 'Items per page' })
  limit?: number;

  @IsOptional()
  @IsString()
  @ApiPropertyOptional({ example: 'DISCOUNT', description: 'Search term for code or name' })
  search?: string;

  @IsOptional()
  @IsEnum(CouponType)
  @ApiPropertyOptional({ enum: CouponType, description: 'Filter by coupon type' })
  type?: CouponType;

  @IsOptional()
  @IsBoolean()
  @Type(() => Boolean)
  @ApiPropertyOptional({ example: true, description: 'Filter by active status' })
  isActive?: boolean;

  @IsOptional()
  @IsString()
  @ApiPropertyOptional({ example: 'createdAt', description: 'Field to order by' })
  orderBy?: string;

  @IsOptional()
  @IsEnum(['asc', 'desc'])
  @ApiPropertyOptional({ enum: ['asc', 'desc'], example: 'desc', description: 'Sort order' })
  order?: 'asc' | 'desc';
}