package dao

import (
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"hospital-open-api/api/model"
	"hospital-open-api/global"
)

type CouponDao struct {
}

// GetCouponById 获取数据-id
func (r *CouponDao) GetCouponById(couponId int64) (m *model.Coupon, err error) {
	err = global.Db.First(&m, couponId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetCouponPreloadById 获取数据-加载全部关联-id
func (r *CouponDao) GetCouponPreloadById(couponId int64) (m *model.Coupon, err error) {
	err = global.Db.Preload(clause.Associations).First(&m, couponId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// EditCoupon 修改
func (r *CouponDao) EditCoupon(tx *gorm.DB, maps interface{}, data interface{}) error {
	err := tx.Model(&model.Coupon{}).Where(maps).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

// EditCouponByOrderServicePackageId 修改-id
func (r *CouponDao) EditCouponByOrderServicePackageId(tx *gorm.DB, couponId int64, data interface{}) error {
	err := tx.Model(&model.Coupon{}).Where("coupon_id = ?", couponId).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

// GetCouponList 获取列表
func (r *CouponDao) GetCouponList(maps interface{}) (m []*model.Coupon, err error) {
	err = global.Db.Where(maps).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// AddCoupon 新增
func (r *CouponDao) AddCoupon(tx *gorm.DB, model *model.Coupon) (*model.Coupon, error) {
	if err := tx.Create(model).Error; err != nil {
		return nil, err
	}
	return model, nil
}

// Inc 自增
func (r *CouponDao) Inc(tx *gorm.DB, couponId int64, field string, numeral int) error {
	err := tx.Model(&model.Coupon{}).Where("coupon_id = ?", couponId).UpdateColumn("coupon_take_count", gorm.Expr(field+" + ?", numeral)).Error
	if err != nil {
		return err
	}
	return nil
}

// Dec 自减
func (r *CouponDao) Dec(tx *gorm.DB, couponId int64, field string, numeral int) error {
	err := tx.Model(&model.Coupon{}).Where("coupon_id = ?", couponId).UpdateColumn("coupon_take_count", gorm.Expr(field+" - ?", numeral)).Error
	if err != nil {
		return err
	}
	return nil
}

// EditCouponById 修改
func (r *CouponDao) EditCouponById(tx *gorm.DB, couponId int64, data interface{}) error {
	err := tx.Model(&model.Coupon{}).Where("coupon_id = ?", couponId).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}