refactor(auth): simplify splash guest entry

src/app/auth/auth-screen.tsx

@@ -7,7 +7,8 @@
 import { useEffect, useSyncExternalStore } from "react";
 
 import { MobileShell } from "@/app/_components/core";
-import { useAuthDispatch, useAuthState } from "@/stores/auth/auth-context";
+import { useAuthState } from "@/stores/auth/auth-context";
+import { isAuthenticatedUser } from "@/router/navigation-resolver";
 import { ROUTES } from "@/router/routes";
 import { useAppNavigator } from "@/router/use-app-navigator";
 
@@ -19,7 +20,6 @@ const log = new Logger("AppAuthAuthScreen");
 
 export function AuthScreen() {
   const state = useAuthState();
-  const authDispatch = useAuthDispatch();
   const navigator = useAppNavigator();
   const redirectTo = useSyncExternalStore(
     subscribeLocationSnapshot,
@@ -28,28 +28,23 @@ export function AuthScreen() {
   );
   const safeRedirectTo = getSafeRedirectPath(redirectTo) ?? ROUTES.chat;
 
-  // 邮箱登录成功 → 跳转；User hydrate 由根级 <UserAuthSync /> 监听 loginStatus 变化处理。
+  // 真实用户登录成功 → 跳转；User hydrate 由根级 <UserAuthSync /> 监听 loginStatus 变化处理。
-  // 用 pendingRedirect flag（不是 useRef transition detection）——
+  // 游客态不触发跳转，避免自动游客登录打断 auth 页面。
-  // re-mount 时 flag 在 auth context 里持久，区分"刚按了"和"re-visit"准确无误。
   useEffect(() => {
-    log.debug("[auth-screen] useEffect (loginStatus + pendingRedirect)", {
+    const shouldRedirect = isAuthenticatedUser(state.loginStatus);
-      pending: state.pendingRedirect,
+    log.debug("[auth-screen] useEffect (loginStatus)", {
       loginStatus: state.loginStatus,
-      willRedirect:
+      willRedirect: shouldRedirect,
-        state.pendingRedirect && state.loginStatus !== "notLoggedIn",
     });
 
-    if (state.pendingRedirect && state.loginStatus !== "notLoggedIn") {
+    if (shouldRedirect) {
-      log.debug("[auth-screen] useEffect → navigator.replace [via pendingRedirect flag]", {
+      log.debug("[auth-screen] useEffect → navigator.replace", {
         redirectTo: safeRedirectTo,
       });
-      authDispatch({ type: "AuthClearPendingRedirect" });
       navigator.replace(safeRedirectTo);
     }
   }, [
     state.loginStatus,
-    state.pendingRedirect,
-    authDispatch,
     navigator,
     safeRedirectTo,
   ]);

src/app/splash/components/splash-button.module.css

@@ -5,31 +5,13 @@
   justify-content: center;
   gap: clamp(var(--spacing-md, 12px), 4.815vw, var(--spacing-26, 26px));
   width: 100%;
+  padding: 0 clamp(var(--spacing-sm, 8px), 2.963vw, var(--spacing-lg, 16px));
   z-index: 2;
 }
 
-.skip {
-  font-size: var(--responsive-section-title, var(--font-size-xxl));
-  font-weight: 700;
-  font-style: italic;
-  color: #ffffff;
-  background: transparent;
-  border: 0;
-  cursor: pointer;
-  padding: 0;
-}
-
-.skip:disabled {
-  opacity: 0.5;
-  cursor: not-allowed;
-}
-
-.separator {
-  width: clamp(var(--spacing-md, 12px), 4.815vw, var(--spacing-26, 26px));
-  height: 1px;
-}
-
 .facebookButton {
+  width: 100%;
+  max-width: 480px;
   min-height: var(--responsive-control-height, 48px);
   padding: 0 clamp(var(--spacing-lg, 16px), 5.556vw, 30px);
   border: 0;
@@ -47,7 +29,7 @@
   display: inline-flex;
   align-items: center;
   justify-content: center;
-  flex: 0 0 auto;
+  flex: 1 1 auto;
   box-shadow: 0 0 10px rgba(248, 89, 168, 0.3);
 }
 

src/app/splash/components/splash-button.tsx

@@ -2,55 +2,30 @@
 /**
  * Splash 底部按钮组
  */
-import { useAuthDispatch, useAuthState } from "@/stores/auth/auth-context";
+import { useAuthState } from "@/stores/auth/auth-context";
 import { LoadingIndicator } from "@/app/_components/core/loading-indicator";
 import styles from "./splash-button.module.css";
 
 export interface SplashButtonProps {
-  onSkip: () => void;
+  onStartChat: () => void;
 }
 
-export function SplashButton({ onSkip }: SplashButtonProps) {
+export function SplashButton({ onStartChat }: SplashButtonProps) {
   const state = useAuthState();
-  const authDispatch = useAuthDispatch();
   const isLoading = state.isLoading;
 
-  const handleFacebookLogin = () => {
-    authDispatch({
-      type: "AuthFacebookLoginSubmitted",
-      provider: "facebook",
-    });
-  };
-
   return (
     <div className={styles.wrapper}>
-      {/* Skip 按钮 = 显式游客登录入口（派发事件 + 立即跳 /chat） */}
       <button
         type="button"
-        onClick={onSkip}
+        onClick={onStartChat}
-        disabled={isLoading}
-        className={styles.skip}
-      >
-        {isLoading ? (
-          <LoadingIndicator color="#ffffff" />
-        ) : (
-          "Skip"
-        )}
-      </button>
-
-      <div className={styles.separator} aria-hidden="true" />
-
-      {/* 社交登录按钮（NextAuth Facebook OAuth） */}
-      <button
-        type="button"
-        onClick={handleFacebookLogin}
         disabled={isLoading}
         className={styles.facebookButton}
       >
         {isLoading ? (
           <LoadingIndicator color="#ffffff" />
         ) : (
-          <span className={styles.facebookLabel}>Login with Facebook</span>
+          <span className={styles.facebookLabel}>Start Chatting</span>
         )}
       </button>
     </div>

src/app/splash/splash-screen.tsx

@@ -3,10 +3,9 @@
 import { useEffect } from "react";
 
 import { MobileShell } from "@/app/_components/core";
-import { hasBusinessLoginToken } from "@/lib/auth/auth_session";
 import { useAppNavigator } from "@/router/use-app-navigator";
-import { useAuthDispatch, useAuthState } from "@/stores/auth/auth-context";
+import { useAuthState } from "@/stores/auth/auth-context";
-import { pwaUtil, Logger } from "@/utils";
+import { pwaUtil } from "@/utils";
 
 import {
   SplashBackground,
@@ -16,7 +15,7 @@ import {
 } from "./components";
 import styles from "./components/splash-screen.module.css";
 
-const log = new Logger("AppSplashSplashScreen");
+const AUTO_OPEN_CHAT_DELAY_MS = 1800;
 
 // 尽量早地缓存 beforeinstallprompt，避免用户停留 splash 时浏览器事件已触发并丢失。
 if (typeof window !== "undefined") {
@@ -26,10 +25,8 @@ if (typeof window !== "undefined") {
 export function SplashScreen() {
   const navigator = useAppNavigator();
   const state = useAuthState();
-  const authDispatch = useAuthDispatch();
 
-  const handleSkip = () => {
+  const handleStartChat = () => {
-    authDispatch({ type: "AuthGuestLoginSubmitted" });
     navigator.openChat({ replace: true });
   };
 
@@ -37,51 +34,14 @@ export function SplashScreen() {
     pwaUtil.prepareInstallPrompt();
   }, []);
 
-  // ─────────────────────────────────────────────────────────────
-  // useEffect ① 启动时检查 localStorage 里的 loginToken：
-  //   - loginToken（OAuth/email sync 写下的）→ 视为"已登录"跳 /chat
-  //   - 不查 guestToken —— 游客用户停留 splash（按你要求）
-  //   - 都没有 → 留 splash
-  // proxy 读不到 localStorage（Edge runtime），所以这条 fallback 必须在 Client 侧。
-  // ─────────────────────────────────────────────────────────────
   useEffect(() => {
-    let cancelled = false;
+    const timer = window.setTimeout(() => {
-    void (async () => {
-      if (!cancelled && (await hasBusinessLoginToken())) {
       navigator.openChat({ replace: true });
-      }
+    }, AUTO_OPEN_CHAT_DELAY_MS);
-    })();
+
-    return () => {
+    return () => window.clearTimeout(timer);
-      cancelled = true;
-    };
   }, [navigator]);
 
-  // ─────────────────────────────────────────────────────────────
-  // useEffect ② 按钮刚派了事件（pendingRedirect=true） +
-  //               loginStatus 是非 notLoggedIn → 跳 /chat
-  //
-  // 关键：`pendingRedirect` 是 auth context 里的持久状态（不是 ref）——
-  // re-mount 时不重置，区分"刚按了"和"历史登录"准确无误。
-  // 跳完调 `AuthClearPendingRedirect` 置 false（一次性信号）。
-  // ─────────────────────────────────────────────────────────────
-  useEffect(() => {
-    // 调试日志（保留，不删 —— 用于排查"re-mount 误跳 /chat"问题）
-    log.debug("[splash] useEffect ② (loginStatus + pendingRedirect)", {
-      pending: state.pendingRedirect,
-      loginStatus: state.loginStatus,
-      willRedirect:
-        state.pendingRedirect && state.loginStatus !== "notLoggedIn",
-    });
-
-    if (state.pendingRedirect && state.loginStatus !== "notLoggedIn") {
-      log.debug(
-        "[splash] useEffect ② → navigator.openChat [via pendingRedirect flag]",
-      );
-      authDispatch({ type: "AuthClearPendingRedirect" });
-      navigator.openChat({ replace: true });
-    }
-  }, [state.loginStatus, state.pendingRedirect, authDispatch, navigator]);
-
   return (
     <MobileShell background="var(--color-sidebar-background)">
       <div className={styles.wrapper}>
@@ -93,28 +53,8 @@ export function SplashScreen() {
           <div className={styles.spacer} />
           <SplashContent />
           <div className={styles.buttonArea}>
-            <SplashButton onSkip={handleSkip} />
+            <SplashButton onStartChat={handleStartChat} />
           </div>
-          {/*
-           * 登录错误提示 —— auth state machine 的 onError 会设 errorMessage
-           * （如 Facebook 同步后端失败 / 后端返回数据 schema 不匹配等）。
-           * 之前没显示，导致用户卡在 splash 看不到原因。
-           */}
-          {state.errorMessage ? (
-            <p
-              role="alert"
-              style={{
-                color: "#c0392b",
-                fontSize: "0.875rem",
-                marginTop: "1rem",
-                textAlign: "center",
-                maxWidth: "320px",
-                lineHeight: 1.4,
-              }}
-            >
-              {state.errorMessage}
-            </p>
-          ) : null}
           <p className={styles.bottom}>
             Elio Silvestri, Your exclusive AI boyfriend
             <br />

src/stores/auth/__tests__/auth-machine.test.ts

@@ -9,11 +9,13 @@ function createTestAuthMachine(
   overrides: Partial<{
     checkAuthStatus: LoginStatus;
     guestLogin: LoginStatus;
+    guestLoginSpy: () => void;
     emailLogin: LoginStatus;
     logoutSpy: () => void;
   }> = {},
 ) {
   const logoutSpy = overrides.logoutSpy ?? vi.fn<() => void>();
+  const guestLoginSpy = overrides.guestLoginSpy ?? vi.fn<() => void>();
 
   return authMachine.provide({
     actors: {
@@ -21,7 +23,10 @@ function createTestAuthMachine(
         async () => overrides.checkAuthStatus ?? "notLoggedIn",
       ),
       guestLogin: fromPromise<LoginStatus, void>(
-        async () => overrides.guestLogin ?? "guest",
+        async () => {
+          guestLoginSpy();
+          return overrides.guestLogin ?? "guest";
+        },
       ),
       emailLogin: fromPromise<
         LoginStatus,
@@ -72,9 +77,10 @@ describe("authMachine", () => {
     actor.stop();
   });
 
-  it("initializes from storage without triggering a pending redirect", async () => {
+  it("initializes from storage without triggering guest login", async () => {
+    const guestLoginSpy = vi.fn<() => void>();
     const actor = createActor(
-      createTestAuthMachine({ checkAuthStatus: "facebook" }),
+      createTestAuthMachine({ checkAuthStatus: "facebook", guestLoginSpy }),
     ).start();
 
     actor.send({ type: "AuthInit" });
@@ -83,26 +89,27 @@ describe("authMachine", () => {
     const context = actor.getSnapshot().context;
     expect(context.loginStatus).toBe("facebook");
     expect(context.hasInitialized).toBe(true);
-    expect(context.pendingRedirect).toBe(false);
+    expect(guestLoginSpy).not.toHaveBeenCalled();
 
     actor.stop();
   });
 
-  it("guest login marks initialized but does not set pending redirect", async () => {
+  it("automatically guest logs in when initialization finds no login state", async () => {
-    const actor = createActor(createTestAuthMachine()).start();
+    const guestLoginSpy = vi.fn<() => void>();
+    const actor = createActor(createTestAuthMachine({ guestLoginSpy })).start();
 
-    actor.send({ type: "AuthGuestLoginSubmitted" });
+    actor.send({ type: "AuthInit" });
     await waitFor(actor, (snapshot) => snapshot.matches("idle"));
 
     const context = actor.getSnapshot().context;
     expect(context.loginStatus).toBe("guest");
     expect(context.hasInitialized).toBe(true);
-    expect(context.pendingRedirect).toBe(false);
+    expect(guestLoginSpy).toHaveBeenCalledOnce();
 
     actor.stop();
   });
 
-  it("email login sets pending redirect until it is cleared", async () => {
+  it("email login updates login status", async () => {
     const actor = createActor(createTestAuthMachine()).start();
 
     actor.send({
@@ -113,10 +120,7 @@ describe("authMachine", () => {
     await waitFor(actor, (snapshot) => snapshot.matches("idle"));
 
     expect(actor.getSnapshot().context.loginStatus).toBe("email");
-    expect(actor.getSnapshot().context.pendingRedirect).toBe(true);
+    expect(actor.getSnapshot().context.hasInitialized).toBe(true);
-
-    actor.send({ type: "AuthClearPendingRedirect" });
-    expect(actor.getSnapshot().context.pendingRedirect).toBe(false);
 
     actor.stop();
   });
@@ -138,7 +142,6 @@ describe("authMachine", () => {
     const context = actor.getSnapshot().context;
     expect(logoutSpy).toHaveBeenCalledOnce();
     expect(context.loginStatus).toBe("notLoggedIn");
-    expect(context.pendingRedirect).toBe(false);
     expect(context.hasInitialized).toBe(true);
 
     actor.stop();

src/stores/auth/auth-actors.ts

@@ -193,13 +193,13 @@ async function persistFacebookProfile(accessToken: string): Promise<void> {
   }
 }
 
-// ========== 显式游客登录 actor（opt-in） ==========
+// ========== 自动游客登录 actor ==========
-// 由 splash UI 派发 `AuthGuestLoginSubmitted` 触发，不自动跑。
+// AuthInit 检查不到任何本地登录态时触发，用于自动补齐游客会话。
 
 export const guestLoginActor = fromPromise<LoginStatus, void>(async () => {
   log.debug("[auth-machine] guestLoginActor ENTRY");
 
-  // 1. 先查本地 guestToken —— 已有就直接进 idle（带 pendingRedirect）
+  // 1. 先查本地 guestToken —— 已有就直接进入游客态
   const hasTokenR = await AuthStorage.getInstance().hasGuestToken();
   log.debug("[auth-machine] guestLoginActor hasGuestToken", {
     success: hasTokenR.success,

src/stores/auth/auth-context.tsx

@@ -36,12 +36,6 @@ interface AuthState {
   loginStatus: MachineContext["loginStatus"];
   /** 启动时的本地登录态恢复是否已经完成 */
   hasInitialized: MachineContext["hasInitialized"];
-  /**
-   * 一次性的"刚按了"信号 —— Skip / Facebook / 邮箱登录按钮派完业务事件后置 true，
-   * splash-screen / auth-screen 看到 `pendingRedirect && loginStatus !== "notLoggedIn"`
-   * 触发跳转 + 调 `AuthClearPendingRedirect` 置 false。
-   */
-  pendingRedirect: boolean;
 }
 
 const AuthStateCtx = createContext<AuthState | null>(null);
@@ -64,7 +58,7 @@ export function AuthProvider({ children }: AuthProviderProps) {
       username: state.context.username,
       confirmPassword: state.context.confirmPassword,
       // isLoading 覆盖邮箱登录 / 邮箱注册 / OAuth 跳转（NextAuth 重定向期间）/
-      // OAuth 回调后端 sync / 显式游客登录
+      // OAuth 回调后端 sync / 自动游客登录
       isLoading:
         state.matches("loadingEmailLogin") ||
         state.matches("loadingEmailRegister") ||
@@ -77,7 +71,6 @@ export function AuthProvider({ children }: AuthProviderProps) {
       errorMessage: state.context.errorMessage,
       loginStatus: state.context.loginStatus,
       hasInitialized: state.context.hasInitialized,
-      pendingRedirect: state.context.pendingRedirect,
     }),
     [state],
   );

src/stores/auth/auth-events.ts

@@ -14,8 +14,6 @@ export type AuthEvent =
   | { type: "AuthLogoutSubmitted" }
   /** App 启动时一次性派发 —— 读 storage 把 loginStatus 同步到状态机 */
   | { type: "AuthInit" }
-  /** 显式游客登录 —— splash 上点"游客模式"按钮触发（不自动） */
-  | { type: "AuthGuestLoginSubmitted" }
   // 业务事件（提交）
   | { type: "AuthEmailLoginSubmitted"; email: string; password: string }
   | {
@@ -32,9 +30,4 @@ export type AuthEvent =
   // OAuth 回调后：把 OAuth provider token 转交后端换业务 token
   // 由 <OAuthSessionSync /> 监听 useSession() 派发
   | { type: "AuthGoogleSyncSubmitted"; idToken: string }
-  | { type: "AuthFacebookSyncSubmitted"; accessToken: string }
+  | { type: "AuthFacebookSyncSubmitted"; accessToken: string };
-  // ──────────────────────────────────────────────────────────────────────
-  // splash / auth screen 跳完 /chat 后清"刚按了"信号（一次性）：
-  // `pendingRedirect` 在 login onDone action 里自动置 true（不是按钮派的）
-  // —— 因此只需要 `AuthClearPendingRedirect` 一个事件
-  | { type: "AuthClearPendingRedirect" };

src/stores/auth/auth-machine.ts

@@ -32,11 +32,7 @@ const toAuthErrorMessage = (error: unknown): string =>
 //
 // 设计：所有登录/同步流跑完都回 `idle`（带正确 `loginStatus`）。
 //
-// `pendingRedirect: boolean`（"用户显式触发了登录"信号）——
+// 未找到任何登录态时，初始化流程会自动进入 guest login，补齐游客会话。
-// 在登录成功的 onDone 里自动置 true：
-//   splash / auth screen 看到 `pendingRedirect && loginStatus !== "notLoggedIn"` 跳 /chat
-//   跳完派 `AuthClearPendingRedirect` 置 false
-// `initializing` 不设 flag —— 启动 init 是被动读 token，不算"用户意图"。
 // ============================================================
 export const authMachine = setup({
   types: {
@@ -86,7 +82,6 @@ export const authMachine = setup({
         // 启动一次性 init：从 storage 同步 loginStatus 到状态机 —— 由 <AuthStatusChecker /> 派发
         AuthInit: "initializing",
 
-        AuthGuestLoginSubmitted: "loadingGuestLogin",
         AuthEmailLoginSubmitted: "loadingEmailLogin",
         AuthEmailRegisterSubmitted: "loadingEmailRegister",
         AuthGoogleLoginSubmitted: "loadingOAuth",
@@ -100,10 +95,6 @@ export const authMachine = setup({
         // OAuth 回调后 sync 入口 —— 由 <OAuthSessionSync /> 派发
         AuthGoogleSyncSubmitted: "syncingGoogleBackend",
         AuthFacebookSyncSubmitted: "syncingFacebookBackend",
-        // splash / auth screen 跳完 /chat 后清flag
-        AuthClearPendingRedirect: {
-          actions: assign({ pendingRedirect: false }),
-        },
       },
     },
 
@@ -111,15 +102,26 @@ export const authMachine = setup({
       entry: assign({ errorMessage: null }),
       invoke: {
         src: "checkAuthStatus",
-        onDone: {
+        onDone: [
+          {
+            guard: ({ event }) => event.output === "notLoggedIn",
+            target: "loadingGuestLogin",
+            actions: assign({
+              loginStatus: "notLoggedIn",
+              // 自动游客登录仍属于初始化流程，完成前不标记 initialized。
+              hasInitialized: false,
+              errorMessage: null,
+            }),
+          },
+          {
             target: "idle", // ← init 完回 idle（从 storage 拿到 loginStatus 后落地）
             actions: assign({
               loginStatus: ({ event }) => event.output,
               hasInitialized: true,
-            // 不置 pendingRedirect —— 状态查询是被动读 token，不算"用户意图"
               errorMessage: null,
             }),
           },
+        ],
         onError: {
           target: "idle",
           actions: assign({
@@ -139,8 +141,6 @@ export const authMachine = setup({
           // 内联 assign —— XState v5 type inference 保留 loadingGuestLogin state 类型
           actions: assign({
             loginStatus: ({ event }) => event.output,
-            // Skip 点击后已在 splash 里立即跳 /chat；guest login 不再依赖 pendingRedirect。
-            pendingRedirect: false,
             errorMessage: null,
             hasInitialized: true,
           }),
@@ -168,7 +168,6 @@ export const authMachine = setup({
           target: "idle",
           actions: assign({
             loginStatus: ({ event }) => event.output,
-            pendingRedirect: true, // ← 邮箱登录成功 → 跳
             errorMessage: null,
             hasInitialized: true,
           }),
@@ -201,7 +200,6 @@ export const authMachine = setup({
           target: "idle",
           actions: assign({
             loginStatus: ({ event }) => event.output,
-            pendingRedirect: true, // ← 注册成功 → 跳
             errorMessage: null,
             hasInitialized: true,
           }),
@@ -238,7 +236,7 @@ export const authMachine = setup({
     },
 
     loggingOut: {
-      entry: assign({ errorMessage: null, pendingRedirect: false }),
+      entry: assign({ errorMessage: null }),
       invoke: {
         src: "logout",
         onDone: {
@@ -271,7 +269,6 @@ export const authMachine = setup({
           target: "idle",
           actions: assign({
             loginStatus: ({ event }) => event.output,
-            pendingRedirect: true, // ← OAuth sync 成功 → 跳
             errorMessage: null,
             hasInitialized: true,
           }),
@@ -298,7 +295,6 @@ export const authMachine = setup({
           target: "idle",
           actions: assign({
             loginStatus: ({ event }) => event.output,
-            pendingRedirect: true, // ← OAuth sync 成功 → 跳
             errorMessage: null,
             hasInitialized: true,
           }),

src/stores/auth/auth-state.ts

@@ -17,15 +17,6 @@ export interface AuthState {
   loginStatus: LoginStatus;
   /** 启动时的本地登录态恢复是否已经完成 */
   hasInitialized: boolean;
-  /**
-   * 一次性的"刚按了"信号 —— Skip / Facebook / 邮箱登录按钮刚派事件 → 置 true
-   *   → splash-screen / auth-screen 看到 `pendingRedirect && loginStatus !== "notLoggedIn"` 触发跳转
-   *   → 跳完置 false
-   *
-   * 历史：之前用 useRef 做 transition detection，但 re-mount 时 ref 重置，bug 复发。
-   *       现在 auth state 里持久（machine 不重置）—— re-mount 时也能区分"刚按"和"历史"。
-   */
-  pendingRedirect: boolean;
 }
 
 export const initialState: AuthState = {
@@ -38,5 +29,4 @@ export const initialState: AuthState = {
   errorMessage: null,
   loginStatus: "notLoggedIn",
   hasInitialized: false,
-  pendingRedirect: false,
 };