fix: handle TV menu and back navigation (#1559)

hooks/useTVBackHandler.ts

@@ -1,25 +1,12 @@
-import { useNavigation } from "@react-navigation/native";
-import { router, useSegments } from "expo-router";
-import { useEffect, useRef } from "react";
-import { BackHandler, Platform } from "react-native";
+import { useSegments } from "expo-router";
+import { useEffect } from "react";
+import { Platform } from "react-native";
+import {
+  disableTVMenuKeyInterception,
+  enableTVMenuKeyInterception,
+} from "./useTVBackPress";
 
-// TV event handler and control with fallback for non-TV platforms
-let useTVEventHandler: (callback: (evt: any) => void) => void;
-let TVEventControl: {
-  enableTVMenuKey: () => void;
-  disableTVMenuKey: () => void;
-} | null = null;
-
-if (Platform.isTV) {
-  try {
-    useTVEventHandler = require("react-native").useTVEventHandler;
-    TVEventControl = require("react-native").TVEventControl;
-  } catch {
-    useTVEventHandler = () => {};
-  }
-} else {
-  useTVEventHandler = () => {};
-}
+export { enableTVMenuKeyInterception } from "./useTVBackPress";
 
 /**
  * Check if we're at the root of a tab
@@ -55,106 +42,26 @@ function getCurrentTab(segments: string[]): string | undefined {
 }
 
 /**
- * Hook to handle TV back/menu button presses.
- *
- * Behavior:
- * - On home tab at root: allows app to exit (default tvOS behavior)
- * - On other tabs at root: navigates to home tab
- * - Deeper in navigation stack: goes back
+ * Keeps tvOS menu key interception disabled on the home tab root so the system
+ * can apply its native app-exit behavior. Other routes can opt into
+ * interception when they need JS-owned back handling.
  */
-export function useTVBackHandler() {
-  const navigation = useNavigation<any>();
+export function useTVHomeBackHandler() {
   const segments = useSegments();
-  const lastMenuKeyState = useRef<boolean | null>(null);
 
   // Get current state
   const currentTab = getCurrentTab(segments);
   const atTabRoot = isAtTabRoot(segments);
   const isOnHomeRoot = atTabRoot && currentTab === "(home)";
 
-  // Toggle menu key interception based on current location
-  useEffect(() => {
-    if (!Platform.isTV || !TVEventControl) return;
-
-    if (isOnHomeRoot) {
-      // On home tab root - disable interception to allow app exit
-      if (lastMenuKeyState.current !== false) {
-        TVEventControl.disableTVMenuKey();
-        lastMenuKeyState.current = false;
-      }
-    } else {
-      // On other screens - enable interception to handle navigation
-      if (lastMenuKeyState.current !== true) {
-        TVEventControl.enableTVMenuKey();
-        lastMenuKeyState.current = true;
-      }
-    }
-  }, [isOnHomeRoot]);
-
-  // Handle TV remote menu/back button events
-  useTVEventHandler((evt) => {
-    if (!evt) return;
-    if (evt.eventType === "menu" || evt.eventType === "back") {
-      // If on home root, let the default behavior happen (app exit)
-      if (isOnHomeRoot) {
-        return;
-      }
-
-      // If at tab root level (but not home), navigate to home
-      if (atTabRoot) {
-        router.navigate("/(auth)/(tabs)/(home)");
-        return;
-      }
-
-      // Not at tab root - go back in the stack
-      if (navigation.canGoBack()) {
-        navigation.goBack();
-        return;
-      }
-
-      // Fallback: navigate to home
-      router.navigate("/(auth)/(tabs)/(home)");
-    }
-  });
-
-  // Android TV BackHandler
   useEffect(() => {
     if (!Platform.isTV) return;
 
-    const handleBackPress = () => {
-      // If on home root, allow app to exit
-      if (isOnHomeRoot) {
-        return false; // Don't prevent default (allows exit)
-      }
+    if (isOnHomeRoot) {
+      disableTVMenuKeyInterception();
+      return;
+    }
 
-      if (atTabRoot) {
-        router.navigate("/(auth)/(tabs)/(home)");
-        return true;
-      }
-
-      if (navigation.canGoBack()) {
-        navigation.goBack();
-        return true;
-      }
-
-      router.navigate("/(auth)/(tabs)/(home)");
-      return true;
-    };
-
-    const subscription = BackHandler.addEventListener(
-      "hardwareBackPress",
-      handleBackPress,
-    );
-
-    return () => subscription.remove();
-  }, [navigation, isOnHomeRoot, atTabRoot]);
-}
-
-/**
- * Call this at app startup to enable TV menu key interception.
- */
-export function enableTVMenuKeyInterception() {
-  if (Platform.isTV && TVEventControl) {
-    TVEventControl.enableTVMenuKey();
-  }
+    enableTVMenuKeyInterception();
+  }, [isOnHomeRoot]);
 }