package model

import (
	"gorm.io/gorm"
	"knowledge/global"
	"time"
)

// QuestionQaItem 知识问答-明细
type QuestionQaItem struct {
	ItemId       int64 `gorm:"column:item_id;type:bigint(19);primary_key;comment:主键id" json:"item_id"`
	QaId         int64 `gorm:"column:qa_id;type:bigint(19);comment:知识问答id;NOT NULL" json:"qa_id"`
	QuestionId   int64 `gorm:"column:question_id;type:bigint(19);comment:题目id;NOT NULL" json:"question_id"`
	IsMustSelect int   `gorm:"column:is_must_select;type:tinyint(1);default:0;comment:是否必被选中（0:否 1:是）" json:"is_must_select"`
	Model
	Question   *Question   `gorm:"foreignKey:QuestionId;references:question_id" json:"question"`
	QuestionQa *QuestionQa `gorm:"foreignKey:QaId;references:qa_id" json:"question_qa"`
}

func (m *QuestionQaItem) TableName() string {
	return "kb_question_qa_item"
}

func (m *QuestionQaItem) BeforeCreate(tx *gorm.DB) error {
	if m.ItemId == 0 {
		m.ItemId = global.Snowflake.Generate().Int64()
	}

	m.CreatedAt = LocalTime(time.Now())
	tx.Statement.SetColumn("CreatedAt", m.CreatedAt)

	m.UpdatedAt = LocalTime(time.Now())
	tx.Statement.SetColumn("UpdatedAt", m.UpdatedAt)

	return nil
}