package service

import (
	"context"
	"database/sql"
	"fmt"

	"github.com/muyuqingfeng/iloom/purchaser-service/internal/model"
	"github.com/muyuqingfeng/iloom/purchaser-service/internal/repository"
)

type APService struct {
	repo *repository.APRepo
	db   *sql.DB
}

func NewAPService(repo *repository.APRepo, db *sql.DB) *APService {
	return &APService{repo: repo, db: db}
}

func (s *APService) List(ctx context.Context, companyID string) ([]model.AccountsPayable, error) {
	return s.repo.List(ctx, companyID)
}

func (s *APService) Pay(ctx context.Context, apID, companyID string, amount float64) error {
	if amount <= 0 {
		return fmt.Errorf("amount must be positive")
	}

	tx, err := s.db.BeginTx(ctx, nil)
	if err != nil {
		return fmt.Errorf("begin tx: %w", err)
	}
	defer tx.Rollback()

	if err := s.repo.Pay(ctx, tx, apID, amount); err != nil {
		return err
	}

	return tx.Commit()
}