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

import { UserRole, UserStatus } from '../../../generated/prisma/enums';

export class UpdateUserDto {
  @Transform(({ value }) => (typeof value === 'string' ? value.trim() : value))
  @ValidateIf((_, value) => value !== undefined)
  @IsString()
  @MinLength(2)
  @MaxLength(50)
  firstName?: string;

  @Transform(({ value }) => (typeof value === 'string' ? value.trim() : value))
  @ValidateIf((_, value) => value !== undefined)
  @IsString()
  @MinLength(2)
  @MaxLength(50)
  lastName?: string;

  @Transform(({ value }) => {
    if (typeof value !== 'string') {
      return value;
    }

    const trimmed = value.trim();
    return trimmed.length > 0 ? trimmed : undefined;
  })
  @ValidateIf((_, value) => value !== undefined && value !== '')
  @IsString()
  @MinLength(8)
  @MaxLength(128)
  @Matches(/^(?=.*[a-z])(?=.*[A-Z])(?=.*\d)(?=.*[^A-Za-z\d]).+$/, {
    message:
      'password must be at least 8 characters and include uppercase, lowercase, number, and special character',
  })
  password?: string;

  @ValidateIf((_, value) => value !== undefined)
  @IsEnum(UserRole)
  role?: UserRole;

  @ValidateIf((_, value) => value !== undefined)
  @IsEnum(UserStatus)
  status?: UserStatus;
}