import { Type } from 'class-transformer';
import { IsIn, IsNotEmpty, IsOptional, IsString, MaxLength } from 'class-validator';
import { PromoCodeScene, PromoCodeStatus } from '@dukang/shared-types';

export class PromoCodeListQueryDto {
  @IsOptional()
  @Type(() => Number)
  page?: number;

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

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

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

  @IsOptional()
  @IsIn(['ACTIVE', 'DISABLED'])
  status?: PromoCodeStatus;

  @IsOptional()
  @IsIn(['ONLINE_LINK', 'OFFLINE_PICKUP', 'PARTNER_CHANNEL', 'EVENT', 'OTHER'])
  scene?: PromoCodeScene;

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

export class CreatePromoCodeDto {
  @IsString()
  @IsNotEmpty()
  @MaxLength(128)
  name: string;

  @IsOptional()
  @IsString()
  @MaxLength(32)
  code?: string;

  @IsOptional()
  @IsIn(['ONLINE_LINK', 'OFFLINE_PICKUP', 'PARTNER_CHANNEL', 'EVENT', 'OTHER'])
  scene?: PromoCodeScene;

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

  @IsOptional()
  @IsString()
  @MaxLength(256)
  remark?: string;

  /** 小程序码落地页路径，如 pages/home/index；留空用环境变量 WX_MINI_PROMO_PAGE */
  @IsOptional()
  @IsString()
  @MaxLength(128)
  page?: string;
}

export class UpdatePromoCodeDto {
  @IsOptional()
  @IsString()
  @MaxLength(128)
  name?: string;

  @IsOptional()
  @IsIn(['ONLINE_LINK', 'OFFLINE_PICKUP', 'PARTNER_CHANNEL', 'EVENT', 'OTHER'])
  scene?: PromoCodeScene;

  @IsOptional()
  @IsString()
  ownerUserId?: string | null;

  @IsOptional()
  @IsString()
  @MaxLength(256)
  remark?: string | null;
}

export class UpdatePromoCodeStatusDto {
  @IsIn(['ACTIVE', 'DISABLED'])
  status: PromoCodeStatus;
}

export class PromoMetricTimelineQueryDto {
  @IsString()
  dateFrom: string;

  @IsString()
  dateTo: string;

  @IsOptional()
  @IsIn(['day', 'hour'])
  granularity?: 'day' | 'hour';
}

export class PromoMetricEventsQueryDto {
  @IsOptional()
  @Type(() => Number)
  page?: number;

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

  @IsOptional()
  @IsIn(['SCAN', 'ATTRIBUTION', 'REGISTER', 'ORDER'])
  eventType?: 'SCAN' | 'ATTRIBUTION' | 'REGISTER' | 'ORDER';

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

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