package model

import (
	"time"

	"github.com/google/uuid"
	"gorm.io/gorm"
)

// Follow 关注关系
type Follow struct {
	ID          string    `json:"id" gorm:"type:varchar(36);primaryKey"`
	FollowerID  string    `json:"follower_id" gorm:"type:varchar(36);index;not null;uniqueIndex:idx_follower_following"`  // 关注者
	FollowingID string    `json:"following_id" gorm:"type:varchar(36);index;not null;uniqueIndex:idx_follower_following"` // 被关注者
	CreatedAt   time.Time `json:"created_at" gorm:"autoCreateTime"`
}

// BeforeCreate 创建前生成UUID
func (f *Follow) BeforeCreate(tx *gorm.DB) error {
	if f.ID == "" {
		f.ID = uuid.New().String()
	}
	return nil
}

func (Follow) TableName() string {
	return "follows"
}