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 UserCouponDao struct {
}

// GetUserCouponById 获取用户优惠卷数据-用户优惠卷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
}

func (r *UserCouponDao) GetUserCouponByUserId(userId int64) (m *model.UserCoupon, err error) {
	err = global.Db.Where("user_id = ?", userId).First(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetUserCouponPreloadById 获取用户优惠卷数据-加载全部关联-用户优惠卷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 删除用户优惠卷
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
}

// EditUserCoupon 修改用户优惠卷
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 修改用户优惠卷-用户优惠卷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 获取用户优惠卷列表
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
}

// 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
}

// AddUserCoupon 新增用户优惠卷
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
}

// GetUserAllObjectTypeCoupon 获取用户某一类型优惠卷
func (r *UserCouponDao) GetUserAllObjectTypeCoupon(userId int64, distributionObject int) (m []*model.UserCoupon, err error) {
	// 构建查询条件
	query := global.Db.Model(&model.UserCoupon{})

	query = query.Preload("Coupon")

	// 用户优惠卷搜索条件
	query = query.Where("user_id = ?", userId)

	// 获取当前时间
	currentTime := time.Now()

	// 格式化时间为 "Y-m-d H:i:s"
	formattedTime := currentTime.Format("2006-01-02 15:04:05")

	query = query.Where("valid_start_time < ?", formattedTime) // 有效使用时间
	query = query.Where("valid_end_time > ?", formattedTime)   // 过期使用时间

	// 优惠卷搜索条件
	subQuery := global.Db.Model(&model.Coupon{}).
		Where("gdxz_user_coupon.coupon_id  = gdxz_coupon.coupon_id").
		Where("gdxz_coupon.distribution_object = ?", distributionObject).
		Where("gdxz_coupon.coupon_client = ?", 1).
		Where("gdxz_coupon.coupon_status = ?", 1)

	query = query.Where("EXISTS (?)", subQuery)

	query = query.Group("coupon_id")

	err = query.Find(&m).Error
	if err != nil {
		return nil, err
	}
	return m, nil
}

// GetUserCouponPageSearch 获取用户优惠卷列表-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", func(db *gorm.DB) *gorm.DB {
		return db.Omit("user_password", "salt")
	})

	query = query.Preload("Coupon")

	// 优惠卷名称
	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))
	}

	// 优惠卷编号
	if req.CouponId != "" {
		query = query.Where("coupon_id = ?", req.CouponId)
	}

	// 使用状态
	if req.UserCouponStatus != nil {
		query = query.Where("user_coupon_status = ?", req.UserCouponStatus)
	}

	// 使用时间
	if req.CouponUseDate != "" {
		couponUseDate := strings.Split(req.CouponUseDate, "&")
		if len(couponUseDate) == 2 {
			startTime, _ := time.Parse("2006-01-02", couponUseDate[0])
			endTime, _ := time.Parse("2006-01-02", couponUseDate[1])

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

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

	// 有效使用时间
	if req.ValidStartTime != "" {
		validStartTime := strings.Split(req.ValidStartTime, "&")
		if len(validStartTime) == 2 {
			startTime, _ := time.Parse("2006-01-02", validStartTime[0])
			endTime, _ := time.Parse("2006-01-02", validStartTime[1])

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

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

	// 过期使用时间
	if req.ValidEndTime != "" {
		validEndTime := strings.Split(req.ValidEndTime, "&")
		if len(validEndTime) == 2 {
			startTime, _ := time.Parse("2006-01-02", validEndTime[0])
			endTime, _ := time.Parse("2006-01-02", validEndTime[1])

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

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

	// 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)
		}
	}

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

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

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

		query = query.Where(gorm.Expr("user_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
}