backend/src/space/dtos/create-product-allocation.dto.ts

import { ApiProperty } from '@nestjs/swagger';
import {
  IsNotEmpty,
  IsOptional,
  IsString,
  IsUUID,
  ValidateIf,
} from 'class-validator';

export class CreateProductAllocationDto {
  @ApiProperty({
    description: 'The name of the tag (if creating a new tag)',
    example: 'New Tag',
  })
  @IsString()
  @IsNotEmpty()
  @ValidateIf((o) => !o.tagUuid)
  tagName: string;

  @ApiProperty({
    description: 'UUID of the tag (if selecting an existing tag)',
    example: '123e4567-e89b-12d3-a456-426614174000',
  })
  @IsUUID()
  @IsNotEmpty()
  @ValidateIf((o) => !o.tagName)
  tagUuid: string;

  @ApiProperty({
    description: 'UUID of the product',
    example: '550e8400-e29b-41d4-a716-446655440000',
  })
  @IsUUID()
  @IsOptional()
  productUuid: string;
}