import {
  ArrayMinSize,
  IsArray,
  IsDateString,
  IsInt,
  IsOptional,
  IsPositive,
  IsString,
  Matches,
  MinLength,
  ValidateIf,
} from 'class-validator';
import { Type } from 'class-transformer';

export class UpdateBusinessDto {
  @IsOptional()
  @IsString()
  @MinLength(2)
  nameFa?: string;

  @IsOptional()
  @IsString()
  @MinLength(2)
  name?: string;

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

  @IsOptional()
  @IsString()
  @Matches(/^[a-z0-9]+(?:-[a-z0-9]+)*$/, {
    message: 'slug must be lowercase letters, numbers, and hyphens',
  })
  slug?: string;

  @IsOptional()
  @IsArray()
  @ArrayMinSize(1)
  @Type(() => Number)
  @IsInt({ each: true })
  categoryIds?: number[];

  @IsOptional()
  @ValidateIf((_, value) => value !== null)
  @Type(() => Number)
  @IsInt()
  ownerUserId?: number | null;

  /** Legacy WillaEngine businesses.id; null clears the link. */
  @IsOptional()
  @ValidateIf((_, value) => value !== null)
  @Type(() => Number)
  @IsInt()
  @IsPositive()
  oldBusinessId?: number | null;

  @IsOptional()
  @ValidateIf((_, value) => value !== null)
  @IsDateString()
  annualRenewalAt?: string | null;

  /**
   * Business SMS shortcode for customer messages (e.g. 5000123456).
   * Empty string or null clears it (falls back to Meshkee advertising number).
   */
  @IsOptional()
  @ValidateIf((_, value) => value !== null && value !== '')
  @IsString()
  @Matches(/^\d{8,16}$/, {
    message: 'smsSenderNumber must be an 8–16 digit shortcode',
  })
  smsSenderNumber?: string | null;
}