feat(admin): add super admin initialization endpoint

Add POST /api/v1/admin/setup-super-admin endpoint to initialize the first super admin.
The endpoint can only be used once - after a super admin exists, subsequent requests
are rejected. Requires valid setup_secret configured via APP_SETUP_SECRET environment
variable or setup_secret in config file.

internal/config/config.go

@@ -33,6 +33,7 @@ type Config struct {
 	WebRTC            WebRTCConfig            `mapstructure:"webrtc"`
 	Report            ReportConfig            `mapstructure:"report"`
 	Sensitive         SensitiveConfig         `mapstructure:"sensitive"`
+	SetupSecret       string                  `mapstructure:"setup_secret"`
 }
 
 // Load 加载配置文件
@@ -170,6 +171,7 @@ func Load(configPath string) (*Config, error) {
 	})
 	// Report 默认值
 	viper.SetDefault("report.auto_hide_threshold", 3)
+	viper.SetDefault("setup_secret", "")
 
 	if err := viper.ReadInConfig(); err != nil {
 		return nil, fmt.Errorf("failed to read config: %w", err)
@@ -269,6 +271,8 @@ func Load(configPath string) (*Config, error) {
 	cfg.Sensitive.LoadFromRedis, _ = strconv.ParseBool(getEnvOrDefault("APP_SENSITIVE_LOAD_FROM_REDIS", fmt.Sprintf("%t", cfg.Sensitive.LoadFromRedis)))
 	cfg.Sensitive.RedisKeyPrefix = getEnvOrDefault("APP_SENSITIVE_REDIS_KEY_PREFIX", cfg.Sensitive.RedisKeyPrefix)
 
+	cfg.SetupSecret = getEnvOrDefault("APP_SETUP_SECRET", cfg.SetupSecret)
+
 	// 安全检查：生产模式必须设置JWT密钥
 	if cfg.Server.Mode != "debug" {
 		if cfg.JWT.Secret == "" || cfg.JWT.Secret == "your-jwt-secret-key-change-in-production" {

internal/errors/app_errors.go

@@ -135,6 +135,11 @@ var (
 	ErrAlreadyVerified            = &AppError{Code: "ALREADY_VERIFIED", Message: "已完成身份认证，无需重复申请"}
 	ErrVerificationAlreadyHandled = &AppError{Code: "VERIFICATION_ALREADY_HANDLED", Message: "该认证申请已被处理"}
 	ErrVerificationRequired       = &AppError{Code: "VERIFICATION_REQUIRED", Message: "需要完成身份认证"}
+
+	// 初始化相关错误
+	ErrSetupAlreadyCompleted    = &AppError{Code: "SETUP_ALREADY_COMPLETED", Message: "超级管理员已初始化，无法重复设置"}
+	ErrInvalidSetupSecret       = &AppError{Code: "INVALID_SETUP_SECRET", Message: "初始化密钥无效"}
+	ErrSetupSecretNotConfigured = &AppError{Code: "SETUP_SECRET_NOT_CONFIGURED", Message: "未配置初始化密钥，无法使用此接口"}
 )
 
 // Wrap 包装错误

internal/handler/setup_handler.go

@@ -0,0 +1,38 @@
+package handler
+
+import (
+	"with_you/internal/pkg/response"
+	"with_you/internal/service"
+
+	"github.com/gin-gonic/gin"
+)
+
+type SetupHandler struct {
+	setupService service.SetupService
+}
+
+func NewSetupHandler(setupService service.SetupService) *SetupHandler {
+	return &SetupHandler{
+		setupService: setupService,
+	}
+}
+
+func (h *SetupHandler) SetupSuperAdmin(c *gin.Context) {
+	type SetupSuperAdminRequest struct {
+		UserID      string `json:"user_id" binding:"required"`
+		SetupSecret string `json:"setup_secret" binding:"required"`
+	}
+
+	var req SetupSuperAdminRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "user_id and setup_secret are required")
+		return
+	}
+
+	if err := h.setupService.SetupSuperAdmin(c.Request.Context(), req.UserID, req.SetupSecret); err != nil {
+		response.HandleError(c, err, "failed to setup super admin")
+		return
+	}
+
+	response.SuccessWithMessage(c, "超级管理员设置成功", nil)
+}

internal/pkg/response/response.go

@@ -161,7 +161,8 @@ func statusCodeFromAppErrorCode(code string) int {
 		return http.StatusBadRequest
 	case "FORBIDDEN", "NOT_GROUP_MEMBER", "NOT_GROUP_ADMIN", "NOT_GROUP_OWNER",
 		"USER_BANNED", "USER_BLOCKED", "MUTED", "MUTE_ALL_ENABLED",
-		"SCHEDULE_FORBIDDEN", "UNAUTHORIZED_NOTIFICATION":
+		"SCHEDULE_FORBIDDEN", "UNAUTHORIZED_NOTIFICATION",
+		"SETUP_ALREADY_COMPLETED":
 		return http.StatusForbidden
 	case "BAD_REQUEST", "INVALID_USERNAME", "INVALID_EMAIL", "INVALID_PHONE",
 		"WEAK_PASSWORD", "USERNAME_EXISTS", "EMAIL_EXISTS", "PHONE_EXISTS",
@@ -171,7 +172,8 @@ func statusCodeFromAppErrorCode(code string) int {
 		"CANNOT_JOIN", "JOIN_REQUEST_PENDING", "GROUP_REQUEST_HANDLED",
 		"NOT_REQUEST_TARGET", "NO_ELIGIBLE_INVITEE", "NOT_MUTUAL_FOLLOW",
 		"INVITE_NOT_ACCEPTED", "STICKER_ALREADY_EXISTS", "INVALID_STICKER_URL",
-		"INVALID_SCHEDULE_PAYLOAD", "SCHEDULE_COLOR_DUPLICATED":
+		"INVALID_SCHEDULE_PAYLOAD", "SCHEDULE_COLOR_DUPLICATED",
+		"INVALID_SETUP_SECRET", "SETUP_SECRET_NOT_CONFIGURED":
 		return http.StatusBadRequest
 	case "VERIFICATION_CODE_TOO_FREQUENT":
 		return http.StatusTooManyRequests

internal/router/router.go

@@ -42,6 +42,7 @@ type Router struct {
 	verificationHandler      *handler.VerificationHandler
 	adminVerificationHandler *handler.AdminVerificationHandler
 	adminProfileAuditHandler *handler.AdminProfileAuditHandler
+	setupHandler            *handler.SetupHandler
 	wsHandler                *handler.WSHandler
 	logService               *service.LogService
 	jwtService               *service.JWTService
@@ -80,6 +81,7 @@ func New(
 	verificationHandler *handler.VerificationHandler,
 	adminVerificationHandler *handler.AdminVerificationHandler,
 	adminProfileAuditHandler *handler.AdminProfileAuditHandler,
+	setupHandler *handler.SetupHandler,
 	logService *service.LogService,
 	activityService service.UserActivityService,
 	casbinService service.CasbinService,
@@ -121,6 +123,7 @@ func New(
 		verificationHandler:      verificationHandler,
 		adminVerificationHandler: adminVerificationHandler,
 		adminProfileAuditHandler: adminProfileAuditHandler,
+		setupHandler:             setupHandler,
 		logService:               logService,
 		jwtService:               jwtService,
 		casbinService:            casbinService,
@@ -157,6 +160,11 @@ func (r *Router) setupRoutes() {
 			auth.POST("/refresh", r.userHandler.RefreshToken)
 		}
 
+		// 初始化超级管理员（公开接口，只能使用一次）
+		if r.setupHandler != nil {
+			v1.POST("/admin/setup-super-admin", r.setupHandler.SetupSuperAdmin)
+		}
+
 		// 需要认证的路由
 		authMiddleware := middleware.Auth(r.jwtService)
 

internal/service/setup_service.go

@@ -0,0 +1,63 @@
+package service
+
+import (
+	"context"
+
+	apperrors "with_you/internal/errors"
+	"with_you/internal/model"
+	"with_you/internal/repository"
+)
+
+type SetupService interface {
+	SetupSuperAdmin(ctx context.Context, userID, setupSecret string) error
+}
+
+type setupService struct {
+	userRepo     repository.UserRepository
+	roleRepo     repository.RoleRepository
+	casbinSvc    CasbinService
+	setupSecret  string
+}
+
+func NewSetupService(
+	userRepo repository.UserRepository,
+	roleRepo repository.RoleRepository,
+	casbinSvc CasbinService,
+	setupSecret string,
+) SetupService {
+	return &setupService{
+		userRepo:    userRepo,
+		roleRepo:    roleRepo,
+		casbinSvc:   casbinSvc,
+		setupSecret: setupSecret,
+	}
+}
+
+func (s *setupService) SetupSuperAdmin(ctx context.Context, userID, setupSecret string) error {
+	if s.setupSecret == "" {
+		return apperrors.ErrSetupSecretNotConfigured
+	}
+
+	if setupSecret != s.setupSecret {
+		return apperrors.ErrInvalidSetupSecret
+	}
+
+	count, err := s.roleRepo.GetRoleUserCount(ctx, model.RoleSuperAdmin)
+	if err != nil {
+		return apperrors.ErrInternal
+	}
+	if count > 0 {
+		return apperrors.ErrSetupAlreadyCompleted
+	}
+
+	user, err := s.userRepo.GetByID(userID)
+	if err != nil {
+		return apperrors.ErrUserNotFound
+	}
+
+	if user.Status == model.UserStatusBanned {
+		return apperrors.ErrUserBanned
+	}
+
+	return s.casbinSvc.AddRoleForUser(ctx, user.ID, model.RoleSuperAdmin)
+}

internal/wire/handler.go

@@ -43,6 +43,7 @@ var HandlerSet = wire.NewSet(
 	ProvideScheduleHandler,
 	ProvideWSHandler,
 	ProvideAdminVerificationHandler,
+	ProvideSetupHandler,
 )
 
 func ProvideUserHandler(
@@ -108,3 +109,9 @@ func ProvideAdminVerificationHandler(
 ) *handler.AdminVerificationHandler {
 	return handler.NewAdminVerificationHandler(adminVerificationService, userRepo)
 }
+
+func ProvideSetupHandler(
+	setupService service.SetupService,
+) *handler.SetupHandler {
+	return handler.NewSetupHandler(setupService)
+}

internal/wire/service.go

@@ -63,6 +63,7 @@ var ServiceSet = wire.NewSet(
 	ProvideAdminVerificationService,
 	ProvideSensitiveService,
 	ProvideUserProfileAuditService,
+	ProvideSetupService,
 
 	// 日志服务
 	ProvideAsyncLogManager,
@@ -476,3 +477,12 @@ func ProvideUserProfileAuditService(
 ) service.UserProfileAuditService {
 	return service.NewUserProfileAuditService(auditRepo, userRepo, hookManager, moderationHooks)
 }
+
+func ProvideSetupService(
+	userRepo repository.UserRepository,
+	roleRepo repository.RoleRepository,
+	casbinSvc service.CasbinService,
+	cfg *config.Config,
+) service.SetupService {
+	return service.NewSetupService(userRepo, roleRepo, casbinSvc, cfg.SetupSecret)
+}