package dao

import (
	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"hospital-admin-api/api/model"
	"hospital-admin-api/api/requests"
	"hospital-admin-api/global"
	"strings"
	"time"
)

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
}

// 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
}

// 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
}

// GetCouponPageSearch 获取列表-分页
func (r *CouponDao) GetCouponPageSearch(req requests.GetSystemCouponPage, 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{})

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

	// 优惠卷描述
	if req.CouponDesc != "" {
		query = query.Where("coupon_desc LIKE ?", "%"+req.CouponDesc+"%")
	}

	// 使用平台（1:小程序）
	if req.CouponClient != nil {
		query = query.Where("coupon_client = ?", req.CouponClient)
	}

	// 优惠卷类型（1:无门槛 2:满减 3:数量
	if req.CouponType != nil {
		query = query.Where("coupon_type = ?", req.CouponType)
	}

	// 状态（1:正常 2:强制失效 3:结束 4:删除）
	if req.CouponStatus != nil {
		query = query.Where("coupon_status = ?", req.CouponStatus)
	}

	// 发放对象（1:全部用户 2:新注册用户 3:会员 4:近期消费 5:近期购药 6:存量用户 7:健康包服务用户）
	if req.DistributionObject != nil {
		query = query.Where("distribution_object = ?", req.DistributionObject)
	}

	// 适用范围（1:全场通用 2:问诊 3:按品牌适用 4:按类别适用 5:单品使用 6:全品类药品）
	if req.ApplicationScope != nil {
		query = query.Where("application_scope = ?", req.ApplicationScope)
	}

	// 关联问诊类型，application_scope=问诊时存在生效，逗号分隔（1:全部 2:快速问诊 3:专家问诊 4:公益问诊 5:问诊购药 6:检测）
	if req.InquiryType != "" {
		query = query.Where("inquiry_type = ?", req.InquiryType)
	}

	// 关联品牌id（如不限制品牌，此项为空）
	if req.BrandId != "" {
		query = query.Where("brand_id = ?", req.BrandId)
	}

	// 是否互斥（0:否 1:是）互斥情况下无法和其他优惠卷同时使用
	if req.IsMutex != nil {
		query = query.Where("is_mutex = ?", req.IsMutex)
	}

	// 是否展示（0:否 1:是）
	if req.IsDisplay != nil {
		query = query.Where("is_display = ?", req.IsDisplay)
	}

	// 有效类型（1:绝对时效，xxx-xxx时间段有效 2:相对时效 n天内有效）
	if req.ValidType != nil {
		query = query.Where("valid_type = ?", req.ValidType)
	}

	// 过期之后是否允许再次发放(0:否 1:是)
	if req.IsReissuableAfterExpire != nil {
		query = query.Where("is_reissuable_after_expire = ?", req.IsReissuableAfterExpire)
	}

	// 是否首页弹窗（0:否 1:是）
	if req.IsPopup != nil {
		query = query.Where("is_popup = ?", req.IsPopup)
	}

	// 创建时间
	if req.CreatedAt != "" {
		createdAt := strings.Split(req.CreatedAt, "&")
		if len(createdAt) == 2 {
			startTime, _ := time.Parse("2006-01-02", createdAt[0])
			endTime, _ := time.Parse("2006-01-02", createdAt[1])

			endTime = endTime.Add(23*time.Hour + 59*time.Minute + 59*time.Second)

			query = query.Where("created_at BETWEEN ? AND ?", startTime, endTime)
		}
	}

	// 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
}

// 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
}