import { Transform } from 'class-transformer';
import {
  IsEmail,
  IsOptional,
  IsString,
  Matches,
  MaxLength,
  MinLength,
} from 'class-validator';

export class UpdateUserDto {
  @Transform(({ value }) =>
    typeof value === 'string' ? value.trim().toLowerCase() : value,
  )
  @IsOptional()
  @IsString()
  @MinLength(3)
  @MaxLength(80)
  @Matches(/^[a-zA-Z0-9._-]+$/)
  username?: string;

  @Transform(({ value }) =>
    typeof value === 'string' ? value.trim().toLowerCase() : value,
  )
  @IsOptional()
  @IsEmail()
  @MaxLength(320)
  email?: string | null;

  @Transform(({ value }) => (typeof value === 'string' ? value.trim() : value))
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(120)
  firstName?: string;

  @Transform(({ value }) => (typeof value === 'string' ? value.trim() : value))
  @IsOptional()
  @IsString()
  @MinLength(1)
  @MaxLength(120)
  lastName?: string;
}