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

import { Transform, Type } from 'class-transformer';

function toOptionalBoolean(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 TranslationQueryDto {
  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(1)
  pageNumber?: number = 1;

  @IsOptional()
  @Type(() => Number)
  @IsInt()
  @Min(1)
  @Max(100)
  limit?: number = 10;

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

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

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

  @IsOptional()
  @Transform(({ value }) => toOptionalBoolean(value))
  @IsBoolean()
  isActive?: boolean;
}

export class TranslationDictionaryQueryDto {
  @IsOptional()
  @IsIn(['en', 'km'])
  language?: 'en' | 'km' = 'en';

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

  @IsOptional()
  @IsString()
  page?: string;
}

export class TranslationKeyQueryDto {
  @IsOptional()
  @IsString()
  module?: string;

  @IsOptional()
  @IsString()
  page?: string;
}