import { Injectable } from '@nestjs/common';
import { EntityManager, EntityRepository } from '@mikro-orm/postgresql';
import { CreditTransaction } from '../entities/credit-transaction.entity';

@Injectable()
export class CreditTransactionRepository extends EntityRepository<CreditTransaction> {
  constructor(readonly em: EntityManager) {
    super(em, CreditTransaction);
  }
  async getCurrentCredit(userId: string,): Promise<number> {
    const lastRow = await this.em.findOne(
      CreditTransaction,
      {
        user: { id: userId },
      },
      { orderBy: { createdAt: 'desc' } },
    );
    return lastRow?.balance || 0;
  }
}