zod-backend/src/allowance/dtos/response/allowance-summary.response.dto.ts

import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';

export class AllowanceSummaryResponseDto {
  @ApiPropertyOptional({
    example: '2026-02-01T00:00:00.000Z',
    description: 'The nearest upcoming payment date among all active schedules (null if no active schedules)',
    nullable: true,
  })
  nextPaymentAt!: Date | null;

  @ApiProperty({
    example: 1600,
    description: 'Total monthly equivalent amount for all active schedules',
  })
  monthlyTotal!: number;

  constructor(nextPaymentAt: Date | null, monthlyTotal: number) {
    this.nextPaymentAt = nextPaymentAt;
    this.monthlyTotal = monthlyTotal;
  }
}