Fix host disconnect

hooks/useGame.ts

@@ -129,6 +129,7 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
   const [hostSecret, setHostSecret] = useState<string | null>(null);
   const [isReconnecting, setIsReconnecting] = useState(false);
   const [presenterId, setPresenterId] = useState<string | null>(null);
+  const [connectedPlayerIds, setConnectedPlayerIds] = useState<string[]>([]);
   
   const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
   const syncTimerRef = useRef<ReturnType<typeof setInterval> | null>(null);
@@ -213,11 +214,19 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
         return null;
       }
       
+      // Don't redirect away from game URLs during initial load - let initializeFromUrl handle it
+      const isGameUrl = /^\/host\/[A-Z0-9]+$/i.test(location.pathname) || 
+                        /^\/play\/[A-Z0-9]+$/i.test(location.pathname);
+      
       switch (gameState) {
         case 'LANDING':
           if (gamePin && location.pathname.startsWith('/play/')) {
             return `/play/${gamePin}`;
           }
+          // Don't navigate away from game URLs if we're in LANDING state (might be reconnecting)
+          if (isGameUrl) {
+            return null;
+          }
           return '/';
         case 'CREATING':
         case 'GENERATING':
@@ -236,6 +245,10 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
           }
           return '/';
         case 'DISCONNECTED':
+          if (gamePin) {
+            return role === 'HOST' ? `/host/${gamePin}` : `/play/${gamePin}`;
+          }
+          return '/';
         case 'WAITING_TO_REJOIN':
           if (gamePin) {
             return `/play/${gamePin}`;
@@ -411,6 +424,7 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
       });
       conn.on('close', () => {
         connectionsRef.current.delete(conn.peer);
+        setConnectedPlayerIds(prev => prev.filter(id => id !== conn.peer));
       });
     });
     
@@ -504,6 +518,7 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
     setGamePin(session.pin);
     setGameState('DISCONNECTED'); // Show loading state on disconnected screen
     setCurrentPlayerName("Host");
+    setConnectedPlayerIds([]); // Reset connected players - they will reconnect
     
     const hostData = await fetchHostSession(session.pin, session.hostSecret);
     
@@ -546,24 +561,15 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
       
       // Determine which state to restore to
       const savedState = hostData.gameState;
-      const restoredPlayers = hostData.players || [];
-      const allAnswered = restoredPlayers.length > 0 && restoredPlayers.every((p: Player) => p.lastAnswerCorrect !== null);
       
       if (savedState === 'LOBBY') {
         setGameState('LOBBY');
       } else if (savedState === 'PODIUM') {
         setGameState('PODIUM');
-      } else if (savedState === 'REVEAL') {
-        // Go directly to reveal screen - players may have already seen their results
-        setGameState('REVEAL');
-      } else if (savedState === 'SCOREBOARD') {
-        // Go directly to scoreboard
-        setGameState('SCOREBOARD');
-      } else if (savedState === 'QUESTION' && allAnswered) {
-        // All players answered while host was disconnected - go directly to reveal
-        setGameState('REVEAL');
       } else {
-        // For QUESTION or COUNTDOWN states where not everyone answered, show HOST_RECONNECTED to let them resume
+        // For all mid-game states (QUESTION, COUNTDOWN, REVEAL, SCOREBOARD),
+        // show HOST_RECONNECTED first so host can wait for players to reconnect
+        // and then choose when to resume
         setGameState('HOST_RECONNECTED');
       }
       
@@ -853,6 +859,7 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
       const payload = data.payload as { name: string; reconnect?: boolean; previousId?: string };
       
       connectionsRef.current.set(conn.peer, conn);
+      setConnectedPlayerIds(prev => prev.includes(conn.peer) ? prev : [...prev, conn.peer]);
       
       const existingByPreviousId = payload.previousId ? playersRef.current.find(p => p.id === payload.previousId) : null;
       const existingByName = playersRef.current.find(p => p.name === payload.name && p.id !== 'host');
@@ -899,6 +906,8 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
         updatedPlayers = playersRef.current.map(p => p.id === reconnectedPlayer.id ? { ...p, id: conn.peer } : p);
         setPlayers(updatedPlayers);
         assignedName = reconnectedPlayer.name;
+        // Update connected player IDs - remove old ID, new ID already added above
+        setConnectedPlayerIds(prev => prev.filter(id => id !== reconnectedPlayer.id));
         if (presenterIdRef.current === reconnectedPlayer.id) {
           setPresenterId(conn.peer);
         }
@@ -1052,6 +1061,7 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
       playersRef.current = updatedPlayers;
       setPlayers(updatedPlayers);
       connectionsRef.current.delete(playerId);
+      setConnectedPlayerIds(prev => prev.filter(id => id !== playerId));
       
       if (presenterIdRef.current === playerId) {
         const realPlayers = updatedPlayers.filter(p => p.id !== 'host');
@@ -1718,7 +1728,7 @@ export const useGame = (defaultGameConfig?: GameConfig) => {
 
   return {
     role, gameState, quiz, players, currentQuestionIndex, timeLeft, error, gamePin, hasAnswered, lastPointsEarned, lastAnswerCorrect, currentCorrectShape, selectedOption, currentPlayerScore, currentStreak, currentPlayerId, gameConfig,
-    pendingQuizToSave, dismissSavePrompt, sourceQuizId, isReconnecting, currentPlayerName, presenterId,
+    pendingQuizToSave, dismissSavePrompt, sourceQuizId, isReconnecting, currentPlayerName, presenterId, connectedPlayerIds,
     startQuizGen, startManualCreation, cancelCreation, finalizeManualQuiz, loadSavedQuiz, joinGame, startGame: startHostGame, handleAnswer, nextQuestion, showScoreboard,
     updateQuizFromEditor, startGameFromEditor, backFromEditor, endGame, attemptReconnect, goHomeFromDisconnected, resumeGame, setPresenterPlayer, sendAdvance, kickPlayer, leaveGame
   };