package topic

import (
	"github.com/golangkit/formatime"
	"live/app/lib/db"
)

type TopicSubstance struct {
	db.BaseModel
	Id        uint             `gorm:"column:id" json:"id"`
	UserId    uint             `gorm:"column:user_id" json:"userId"`
	TopicId   uint             `gorm:"column:topic_id" json:"topicId"`
	CreatedAt formatime.Second `gorm:"column:created_at" json:"createdAt"`
}

// @Title 添加参与人
func (t *TopicSubstance) AddSubstance(userId, topicId uint) uint {
	if userId <= 0 || topicId <= 0 {
		return 0
	}
	result := TopicSubstance{
		UserId:  userId,
		TopicId: topicId,
	}
	t.GetDb().Create(&result)
	return result.Id
}

// @Title 获取参与人信息
func (t *TopicSubstance) GetSubstanceByUserIdAndTopicId(userId, topicId uint) (result TopicSubstance) {
	if userId <= 0 || topicId <= 0 {
		return
	}
	t.GetDb().Model(t).First(&result, "user_id = ? and topic_id = ?", userId, topicId)
	return
}