backend/internal/model/group.go

package model

import (
	"strconv"
	"time"

	"gorm.io/gorm"
)

// JoinType 群组加入类型
type JoinType int

const (
	JoinTypeAnyone    JoinType = 0 // 允许任何人加入
	JoinTypeApproval  JoinType = 1 // 需要审批
	JoinTypeForbidden JoinType = 2 // 不允许加入
)

// Group 群组模型
type Group struct {
	ID          string    `gorm:"primaryKey;size:20" json:"id"`
	Name        string    `gorm:"size:50;not null" json:"name"`
	Avatar      string    `gorm:"size:512" json:"avatar"`
	Description string    `gorm:"size:500" json:"description"`
	OwnerID     string    `gorm:"type:varchar(36);not null;index" json:"owner_id"`
	MemberCount int       `gorm:"default:0" json:"member_count"`
	MaxMembers  int       `gorm:"default:500" json:"max_members"`
	JoinType    JoinType  `gorm:"default:0" json:"join_type"`    // 0:允许任何人加入 1:需要审批 2:不允许加入
	MuteAll     bool      `gorm:"default:false" json:"mute_all"` // 全员禁言
	CreatedAt   time.Time `json:"created_at"`
	UpdatedAt   time.Time `json:"updated_at"`
}

// BeforeCreate 创建前生成雪花算法ID
func (g *Group) BeforeCreate(tx *gorm.DB) error {
	return SetSnowflakeStringID(&g.ID)
}

// GetIDInt 获取数字类型的ID（用于比较）
func (g *Group) GetIDInt() uint64 {
	id, _ := strconv.ParseUint(g.ID, 10, 64)
	return id
}

// TableName 指定表名
func (Group) TableName() string {
	return "groups"
}