backend/internal/model/group_member.go

package model

import (
	"time"

	"gorm.io/gorm"
)

// GroupMember 群成员模型
type GroupMember struct {
	ID        string    `gorm:"primaryKey;size:20" json:"id"`
	GroupID   string    `gorm:"not null;uniqueIndex:idx_group_user" json:"group_id"`
	UserID    string    `gorm:"type:varchar(36);not null;uniqueIndex:idx_group_user" json:"user_id"`
	Role      string    `gorm:"size:20;default:'member'" json:"role"` // owner, admin, member
	Nickname  string    `gorm:"size:50" json:"nickname"`              // 群内昵称
	Muted     bool      `gorm:"default:false" json:"muted"`           // 是否被禁言
	JoinTime  time.Time `json:"join_time"`
	CreatedAt time.Time `json:"created_at"`
	UpdatedAt time.Time `json:"updated_at"`
}

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

// TableName 指定表名
func (GroupMember) TableName() string {
	return "group_members"
}

// Role 常量
const (
	GroupRoleOwner  = "owner"
	GroupRoleAdmin  = "admin"
	GroupRoleMember = "member"
)