import { Transform, Type } from 'class-transformer';
import {
  IsBoolean,
  IsInt,
  IsOptional,
  IsString,
  Max,
  Min,
} from 'class-validator';

function transformBoolean(value: unknown): boolean | undefined {
  if (value === undefined || value === null || value === '') {
    return undefined;
  }

  if (value === true || value === 'true') {
    return true;
  }

  if (value === false || value === 'false') {
    return false;
  }

  return undefined;
}

export class GetSystemNotificationsQueryDto {
  @Type(() => Number)
  @IsInt()
  @IsOptional()
  receiverUserId?: number;

  @Type(() => Number)
  @IsInt()
  @IsOptional()
  receiverStakeholderId?: number;

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

  @Transform(({ value }: { value: unknown }) => transformBoolean(value))
  @IsBoolean()
  @IsOptional()
  isRead?: boolean;

  @Type(() => Number)
  @IsInt()
  @Min(1)
  @IsOptional()
  page?: number;

  @Type(() => Number)
  @IsInt()
  @Min(1)
  @Max(100)
  @IsOptional()
  limit?: number;
}