package user

import (
	"bindbox-game/internal/repository/mysql/dao"
	"context"
	"fmt"
)

// CancelShipping 取消发货申请
func (s *service) CancelShipping(ctx context.Context, userID int64, inventoryID int64) error {
	// 1. 开启事务
	return s.writeDB.Transaction(func(tx *dao.Query) error {
		// 2. 查询发货记录（必须是待发货状态 status=1）
		sr, err := tx.ShippingRecords.WithContext(ctx).
			Where(tx.ShippingRecords.InventoryID.Eq(inventoryID)).
			Where(tx.ShippingRecords.UserID.Eq(userID)).
			Where(tx.ShippingRecords.Status.Eq(1)).
			First()

		if err != nil {
			return fmt.Errorf("shipping record not found or already processed")
		}

		// 3. 更新发货记录状态为已取消 (status=5)
		if _, err := tx.ShippingRecords.WithContext(ctx).
			Where(tx.ShippingRecords.ID.Eq(sr.ID)).
			Update(tx.ShippingRecords.Status, 5); err != nil {
			return err
		}

		// 4. 恢复库存状态为可用 (status=1)
		// 并追加备注
		// 使用原生SQL以确保CONCAT行为一致
		remark := fmt.Sprintf("|shipping_cancelled_by_user:%d", userID)
		if err := tx.UserInventory.WithContext(ctx).UnderlyingDB().Exec(
			"UPDATE user_inventory SET status=1, remark=CONCAT(IFNULL(remark,''), ?) WHERE id=? AND user_id=?",
			remark,
			inventoryID,
			userID,
		).Error; err != nil {
			return err
		}

		return nil
	})
}