hepa-calc-admin-api/api/dao/UserCoupon.go

package dao

import (
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"hepa-calc-admin-api/api/model"
	"hepa-calc-admin-api/api/requests"
	"hepa-calc-admin-api/global"
)

type UserCouponDao struct {
}

// GetUserCouponById 获取数据-id
func (r *UserCouponDao) GetUserCouponById(UserCouponId int64) (m *model.UserCoupon, err error) {
	err = global.Db.First(&m, UserCouponId).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

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

// DeleteUserCoupon 删除
func (r *UserCouponDao) DeleteUserCoupon(tx *gorm.DB, maps interface{}) error {
	err := tx.Where(maps).Delete(&model.UserCoupon{}).Error
	if err != nil {
		return err
	}
	return nil
}

// DeleteUserCouponById 删除-id
func (r *UserCouponDao) DeleteUserCouponById(tx *gorm.DB, UserCouponId int64) error {
	if err := tx.Delete(&model.UserCoupon{}, UserCouponId).Error; err != nil {
		return err
	}
	return nil
}

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

// EditUserCouponById 修改-id
func (r *UserCouponDao) EditUserCouponById(tx *gorm.DB, UserCouponId int64, data interface{}) error {
	err := tx.Model(&model.UserCoupon{}).Where("user_coupon_id = ?", UserCouponId).Updates(data).Error
	if err != nil {
		return err
	}
	return nil
}

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

// GetUserCouponPreloadList 获取列表-加载全部关联
func (r *UserCouponDao) GetUserCouponPreloadList(maps interface{}) (m []*model.UserCoupon, err error) {
	err = global.Db.Preload(clause.Associations).Where(maps).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetUserCouponCount 获取数量
func (r *UserCouponDao) GetUserCouponCount(maps interface{}) (total int64, err error) {
	err = global.Db.Model(&model.UserCoupon{}).Where(maps).Count(&total).Error
	if err != nil {
		return 0, err
	}
	return total, nil
}

// GetUserCouponListRand 获取列表-随机
func (r *UserCouponDao) GetUserCouponListRand(maps interface{}, limit int) (m []*model.UserCoupon, err error) {
	err = global.Db.Where(maps).Order("rand()").Limit(limit).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

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

// GetUserCoupon 获取
func (r *UserCouponDao) GetUserCoupon(maps interface{}) (m *model.UserCoupon, err error) {
	err = global.Db.Where(maps).First(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetUserCouponListByValidTime 获取列表-今天开始时间/过期时间
func (r *UserCouponDao) GetUserCouponListByValidTime(maps interface{}, startTime, endTime string) (m []*model.UserCoupon, err error) {
	err = global.Db.Where(maps).Where("valid_end_time BETWEEN ? AND ?", startTime, endTime).Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetUserCouponPageSearch 获取列表-分页
func (r *UserCouponDao) GetUserCouponPageSearch(req requests.GetUserCouponPage, page, pageSize int) (m []*model.UserCoupon, total int64, err error) {
	var totalRecords int64

	// 构建查询条件
	query := global.Db.Model(&model.UserCoupon{})

	// 用户
	query = query.Preload("User")

	// 优惠卷
	query = query.Preload("Coupon")

	// 优惠券id
	if req.CouponId != "" {
		query = query.Where("coupon_id = ?", req.CouponId)
	}

	// 用户id
	if req.UserId != nil {
		query = query.Where("user_id = ?", req.UserId)
	}

	// 优惠券id
	if req.CouponId != "" {
		query = query.Where("coupon_id = ?", req.CouponId)
	}

	// 状态（0:未使用 1:已使用 3:已过期）
	if req.UserCouponStatus != nil {
		query = query.Where("user_coupon_status = ?", req.UserCouponStatus)
	}

	// 用户名称
	if req.UserName != "" {
		subQuery := global.Db.Model(&model.User{}).
			Select("user_id").
			Where("user_name LIKE ?", "%"+req.UserName+"%")

		query = query.Where(gorm.Expr("user_id IN (?)", subQuery))
	}

	// 用户手机号
	if req.UserMobile != "" {
		subQuery := global.Db.Model(&model.User{}).
			Select("user_id").
			Where("mobile LIKE ?", "%"+req.UserMobile+"%")

		query = query.Where(gorm.Expr("user_id IN (?)", subQuery))
	}

	// 优惠券名称
	if req.CouponName != "" {
		subQuery := global.Db.Model(&model.Coupon{}).
			Select("coupon_id").
			Where("coupon_name LIKE ?", "%"+req.CouponName+"%")

		query = query.Where(gorm.Expr("coupon_id IN (?)", subQuery))
	}

	// 优惠券类型
	if req.CouponType != nil {
		subQuery := global.Db.Model(&model.Coupon{}).
			Select("coupon_id").
			Where("coupon_type = ?", req.CouponType)

		query = query.Where(gorm.Expr("coupon_id IN (?)", subQuery))
	}

	// 适用范围
	if req.ApplicationScope != nil {
		subQuery := global.Db.Model(&model.Coupon{}).
			Select("coupon_id").
			Where("application_scope = ?", req.ApplicationScope)

		query = query.Where(gorm.Expr("coupon_id IN (?)", subQuery))
	}

	// 排序
	query = query.Order("created_at desc")

	// 查询总数量
	if err := query.Count(&totalRecords).Error; err != nil {
		return nil, 0, err
	}

	err = query.Scopes(model.Paginate(page, pageSize)).Find(&m).Error
	if err != nil {
		return nil, 0, err
	}
	return m, totalRecords, nil
}