fix(fullscreen): read settings via core.transport, not useSettings

FullscreenProvider sits above the router, but useSettings() ->
useProfile() -> useModelState() requires CoreSuspenderContext which is
only provided by withCoreSuspender below the router. Mounting the
provider therefore crashed with "Cannot read properties of null
(reading 'getState')".

Switch the provider to read profile.settings.escExitFullscreen directly
from core.transport.getState('ctx') and refresh on the 'NewState' event
when 'ctx' changes. core is available via useServices(), whose provider
sits at the very top of the tree and is always reachable here.

Behavior is preserved: ESC still exits fullscreen iff the user has the
escExitFullscreen setting enabled, and updates to that setting from the
Settings tab take effect on the next ctx NewState push.

Made-with: Cursor

src/common/Fullscreen/FullscreenProvider.tsx

@@ -1,8 +1,9 @@
 // Copyright (C) 2017-2023 Smart code 203358507
 
-import React, { useCallback, useEffect, useMemo, useState } from 'react';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
+// @ts-expect-error JS module without types
+import { useServices } from 'stremio/services';
 import useShell, { type WindowVisibility } from '../useShell';
-import useSettings from '../useSettings';
 import FullscreenContext, { type FullscreenContextValue } from './FullscreenContext';
 
 type Props = {
@@ -12,15 +13,24 @@ type Props = {
 // Single source of truth for fullscreen state. Mounted once at the app root so
 // the value survives route remounts (fixes desync where switching tabs while in
 // fullscreen would leave the UI thinking we were still windowed).
+//
+// We deliberately avoid useSettings()/useProfile() here because those go
+// through useModelState -> useCoreSuspender, which is only available beneath
+// the router's withCoreSuspender boundary. This provider sits above the
+// router (alongside ToastProvider et al.), so we read the single setting we
+// need (escExitFullscreen) directly from core.transport, which is provided
+// by ServicesProvider higher up the tree.
 const FullscreenProvider = ({ children }: Props) => {
     const shell = useShell();
-    const [settings] = useSettings();
+    const { core } = useServices();
 
     const [fullscreen, setFullscreen] = useState<boolean>(() => {
         if (typeof document === 'undefined') return false;
         return document.fullscreenElement === document.documentElement;
     });
 
+    const escExitFullscreenRef = useRef<boolean>(false);
+
     const requestFullscreen = useCallback(async () => {
         if (shell.active) {
             shell.send('win-set-visibility', { fullscreen: true });
@@ -47,6 +57,36 @@ const FullscreenProvider = ({ children }: Props) => {
         fullscreen ? exitFullscreen() : requestFullscreen();
     }, [fullscreen, exitFullscreen, requestFullscreen]);
 
+    useEffect(() => {
+        if (!core?.active) return;
+
+        let cancelled = false;
+        const refreshSettings = async () => {
+            try {
+                const ctx = await core.transport.getState('ctx');
+                if (!cancelled) {
+                    escExitFullscreenRef.current = !!ctx?.profile?.settings?.escExitFullscreen;
+                }
+            } catch (err) {
+                console.error('FullscreenProvider: failed to read ctx state', err);
+            }
+        };
+
+        const onNewState = (models: string[]) => {
+            if (Array.isArray(models) && models.indexOf('ctx') !== -1) {
+                refreshSettings();
+            }
+        };
+
+        refreshSettings();
+        core.transport.on('NewState', onNewState);
+
+        return () => {
+            cancelled = true;
+            core.transport.off('NewState', onNewState);
+        };
+    }, [core]);
+
     useEffect(() => {
         const onWindowVisibilityChanged = (state: WindowVisibility) => {
             setFullscreen(state.isFullscreen === true);
@@ -66,7 +106,7 @@ const FullscreenProvider = ({ children }: Props) => {
                  activeElement.tagName === 'SELECT' ||
                  activeElement.isContentEditable);
 
-            if (event.code === 'Escape' && settings.escExitFullscreen) {
+            if (event.code === 'Escape' && escExitFullscreenRef.current) {
                 exitFullscreen();
             }
 
@@ -88,7 +128,7 @@ const FullscreenProvider = ({ children }: Props) => {
             document.removeEventListener('keydown', onKeyDown);
             document.removeEventListener('fullscreenchange', onFullscreenChange);
         };
-    }, [shell, settings.escExitFullscreen, toggleFullscreen, exitFullscreen]);
+    }, [shell, toggleFullscreen, exitFullscreen]);
 
     const value = useMemo<FullscreenContextValue>(
         () => [fullscreen, requestFullscreen, exitFullscreen, toggleFullscreen],