package dao

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

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
}

// 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{})
	query = query.Where("user_id = ?", req.UserId)

	// 优惠卷
	query = query.Preload("Coupon", func(db *gorm.DB) *gorm.DB {
		return db.Select("coupon_id", "coupon_name", "coupon_type", "coupon_status", "application_scope", "coupon_price", "valid_start_time", "valid_end_time", "coupon_desc")
	})

	// 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)
	}

	// 是否已弹窗
	if req.IsWindows != nil {
		query = query.Where("is_windows = ?", req.IsWindows)
	}

	// 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)
		}
	}

	// 有效开始时间
	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)
		}
	}

	// 有效结束时间
	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)
		}
	}

	// 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
}

// 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
}