初始化项目:基础设施 + 用户认证 + 后台管理系统 + AGPL 3.0 许可
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141
internal/service/admin_service.go
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141
internal/service/admin_service.go
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package service
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import (
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"metazone.cc/metalab/internal/common"
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"metazone.cc/metalab/internal/model"
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"metazone.cc/metalab/internal/repository"
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)
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// AdminService 管理后台业务逻辑
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// 集中处理所有权限边界检查,避免胖控制器
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type AdminService struct {
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userRepo *repository.UserRepo
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}
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// NewAdminService 构造函数
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func NewAdminService(userRepo *repository.UserRepo) *AdminService {
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return &AdminService{userRepo: userRepo}
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}
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// ListUsersParams 用户列表查询参数
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type ListUsersParams struct {
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Keyword string // 搜索关键字(邮箱/用户名)
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Role string // 角色筛选
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Status string // 状态筛选
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Page int // 页码
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PageSize int // 每页条数
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}
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// ListUsersResult 用户列表查询结果
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type ListUsersResult struct {
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Users []model.User `json:"users"`
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Total int64 `json:"total"`
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Page int `json:"page"`
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}
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// ListUsers 分页搜索用户列表
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func (s *AdminService) ListUsers(params ListUsersParams) (*ListUsersResult, error) {
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if params.Page < 1 {
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params.Page = 1
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}
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if params.PageSize < 1 || params.PageSize > 100 {
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params.PageSize = 20
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}
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offset := (params.Page - 1) * params.PageSize
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total, err := s.userRepo.CountSearchUsers(params.Keyword, params.Role, params.Status)
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if err != nil {
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return nil, err
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}
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users, err := s.userRepo.SearchUsers(params.Keyword, params.Role, params.Status, offset, params.PageSize)
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if err != nil {
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return nil, err
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}
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return &ListUsersResult{
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Users: users,
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Total: total,
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Page: params.Page,
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}, nil
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}
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// UpdateUserStatus 修改用户状态
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// 权限规则:
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// - 不可操作自己
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// - Admin 只能设置 active/banned,且只能操作 RoleUser
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// - Owner 可设置 active/banned/locked,可操作任何人(除自己)
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func (s *AdminService) UpdateUserStatus(operatorUID, targetUID uint, newStatus string) error {
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// 校验状态值合法性
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switch newStatus {
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case model.StatusActive, model.StatusBanned, model.StatusLocked:
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default:
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return common.ErrPermissionDenied
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}
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return s.checkAndOperate(operatorUID, targetUID, func(operator, target *model.User) error {
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// locked 相关操作仅 owner
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if target.Status == model.StatusLocked || newStatus == model.StatusLocked {
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if !model.HasMinRole(operator.Role, model.RoleOwner) {
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return common.ErrPermissionDenied
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}
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}
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if err := s.userRepo.UpdateStatus(target.ID, newStatus); err != nil {
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return err
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}
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// 锁定(删除)→ GORM 软删除释放邮箱;解锁 → 先查邮箱冲突再恢复
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if newStatus == model.StatusLocked {
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if err := s.userRepo.SoftDelete(target.ID); err != nil {
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return err
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}
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} else if target.Status == model.StatusLocked && newStatus == model.StatusActive {
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// 检查邮箱是否已被新用户注册(软删期间邮箱释放了)
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collision, err := s.userRepo.ExistsByEmailExclude(target.Email, target.ID)
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if err != nil {
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return err
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}
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if collision {
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return common.ErrEmailExists
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}
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if err := s.userRepo.Restore(target.ID); err != nil {
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return err
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}
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}
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// 修改状态必须立刻让 JWT 失效
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return s.userRepo.IncrementTokenVersion(target.ID)
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})
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}
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// ResetUserToken 强制下线(递增 token_version)
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func (s *AdminService) ResetUserToken(operatorUID, targetUID uint) error {
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return s.checkAndOperate(operatorUID, targetUID, func(_ *model.User, target *model.User) error {
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return s.userRepo.IncrementTokenVersion(target.ID)
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})
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}
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// checkAndOperate 通用权限检查 + 执行操作
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func (s *AdminService) checkAndOperate(operatorUID, targetUID uint, operate func(*model.User, *model.User) error) error {
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// 1. 不可操作自己
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if operatorUID == targetUID {
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return common.ErrPermissionDenied
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}
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// 2. 查操作者
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operator, err := s.userRepo.FindByIDUnscoped(operatorUID)
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if err != nil {
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return common.ErrUserNotFound
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}
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// 3. 查目标(含软删除用户,locked 解锁需要查到)
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target, err := s.userRepo.FindByIDUnscoped(targetUID)
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if err != nil {
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return common.ErrUserNotFound
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}
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// 4. Admin 只能操作 user 角色
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if operator.Role == model.RoleAdmin && target.Role != model.RoleUser {
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return common.ErrPermissionDenied
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}
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return operate(operator, target)
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}
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