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 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
}

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

// DeleteCouponById 删除-id
func (r *CouponDao) DeleteCouponById(tx *gorm.DB, CouponId int64) error {
	if err := tx.Delete(&model.Coupon{}, CouponId).Error; err != nil {
		return err
	}
	return 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
}

// EditCouponById 修改-id
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
}

// 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
}

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

// GetCouponListRand 获取列表-随机
func (r *CouponDao) GetCouponListRand(maps interface{}, limit int) (m []*model.Coupon, err error) {
	err = global.Db.Where(maps).Order("rand()").Limit(limit).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
}

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

// GetCouponListByValidTime 获取列表-今天开始时间/过期时间
func (r *CouponDao) GetCouponListByValidTime(maps interface{}, startTime, endTime string) (m []*model.Coupon, 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
}

// GetCouponPageSearch 获取列表-分页
func (r *CouponDao) GetCouponPageSearch(req requests.GetCouponPage, page, pageSize int) (m []*model.Coupon, total int64, err error) {
	var totalRecords int64

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

	// 优惠券名称
	if req.CouponName != "" {
		query = query.Where("coupon_name LIKE ?", "%"+req.CouponName+"%")
	}

	// 优惠券类型
	if req.CouponType != nil {
		query = query.Where("coupon_type = ?", req.CouponType)
	}

	// 状态
	if req.CouponStatus != nil {
		query = query.Where("coupon_status = ?", req.CouponStatus)
	}

	// 适用范围
	if req.ApplicationScope != nil {
		query = query.Where("application_scope = ?", req.ApplicationScope)
	}

	// 是否互斥
	if req.IsMutex != nil {
		query = query.Where("is_mutex = ?", req.IsMutex)
	}

	// 有效类型
	if req.ValidType != nil {
		query = query.Where("valid_type = ?", req.ValidType)
	}

	// 优惠券描述
	if req.CouponDesc != "" {
		query = query.Where("coupon_desc = ?", req.CouponDesc)
	}

	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
}