zod-backend/src/card/dtos/responses/spending-history.response.dto.ts

import { ApiProperty } from '@nestjs/swagger';
import { SpendingHistoryItemDto } from './spending-history-item.response.dto';

export class SpendingHistoryResponseDto {
  @ApiProperty({ type: [SpendingHistoryItemDto] })
  transactions!: SpendingHistoryItemDto[];

  @ApiProperty({ example: 150.75 })
  totalSpent!: number;

  @ApiProperty({ example: 'SAR' })
  currency!: string;

  @ApiProperty({ example: 10 })
  count!: number;

  constructor(transactions: SpendingHistoryItemDto[], currency: string = 'SAR') {
    this.transactions = transactions;
    this.totalSpent = transactions.reduce((sum, tx) => sum + tx.amount, 0);
    this.currency = currency;
    this.count = transactions.length;
  }
}