Add sharing

hooks/useQuizLibrary.ts

@@ -8,6 +8,7 @@ interface UseQuizLibraryReturn {
   loading: boolean;
   loadingQuizId: string | null;
   deletingQuizId: string | null;
+  sharingQuizId: string | null;
   saving: boolean;
   exporting: boolean;
   importing: boolean;
@@ -18,6 +19,8 @@ interface UseQuizLibraryReturn {
   updateQuiz: (id: string, quiz: Quiz) => Promise<void>;
   updateQuizConfig: (id: string, config: GameConfig) => Promise<void>;
   deleteQuiz: (id: string) => Promise<void>;
+  shareQuiz: (id: string) => Promise<string>;
+  unshareQuiz: (id: string) => Promise<void>;
   exportQuizzes: (quizIds: string[]) => Promise<void>;
   importQuizzes: (quizzes: ExportedQuiz[]) => Promise<void>;
   parseImportFile: (file: File) => Promise<QuizExportFile>;
@@ -31,6 +34,7 @@ export const useQuizLibrary = (): UseQuizLibraryReturn => {
   const [loading, setLoading] = useState(false);
   const [loadingQuizId, setLoadingQuizId] = useState<string | null>(null);
   const [deletingQuizId, setDeletingQuizId] = useState<string | null>(null);
+  const [sharingQuizId, setSharingQuizId] = useState<string | null>(null);
   const [saving, setSaving] = useState(false);
   const [exporting, setExporting] = useState(false);
   const [importing, setImporting] = useState(false);
@@ -267,6 +271,70 @@ export const useQuizLibrary = (): UseQuizLibraryReturn => {
       setDeletingQuizId(null);
     }
   }, [authFetch]);
+
+  const shareQuiz = useCallback(async (id: string): Promise<string> => {
+    setSharingQuizId(id);
+    setError(null);
+    
+    try {
+      const response = await authFetch(`/api/quizzes/${id}/share`, {
+        method: 'POST',
+      });
+
+      if (!response.ok) {
+        const errorText = response.status === 404 
+          ? 'Quiz not found.' 
+          : 'Failed to share quiz.';
+        throw new Error(errorText);
+      }
+
+      const data = await response.json();
+      setQuizzes(prev => prev.map(q => 
+        q.id === id ? { ...q, shareToken: data.shareToken, isShared: true } : q
+      ));
+      toast.success('Quiz shared! Link copied to clipboard.');
+      return data.shareToken;
+    } catch (err) {
+      const message = err instanceof Error ? err.message : 'Failed to share quiz';
+      if (!message.includes('redirecting')) {
+        toast.error(message);
+      }
+      throw err;
+    } finally {
+      setSharingQuizId(null);
+    }
+  }, [authFetch]);
+
+  const unshareQuiz = useCallback(async (id: string): Promise<void> => {
+    setSharingQuizId(id);
+    setError(null);
+    
+    try {
+      const response = await authFetch(`/api/quizzes/${id}/share`, {
+        method: 'DELETE',
+      });
+
+      if (!response.ok) {
+        const errorText = response.status === 404 
+          ? 'Quiz not found.' 
+          : 'Failed to stop sharing quiz.';
+        throw new Error(errorText);
+      }
+
+      setQuizzes(prev => prev.map(q => 
+        q.id === id ? { ...q, shareToken: undefined, isShared: false } : q
+      ));
+      toast.success('Quiz is no longer shared');
+    } catch (err) {
+      const message = err instanceof Error ? err.message : 'Failed to stop sharing quiz';
+      if (!message.includes('redirecting')) {
+        toast.error(message);
+      }
+      throw err;
+    } finally {
+      setSharingQuizId(null);
+    }
+  }, [authFetch]);
   
   const exportQuizzes = useCallback(async (quizIds: string[]): Promise<void> => {
     if (quizIds.length === 0) {
@@ -379,6 +447,7 @@ export const useQuizLibrary = (): UseQuizLibraryReturn => {
     loading,
     loadingQuizId,
     deletingQuizId,
+    sharingQuizId,
     saving,
     exporting,
     importing,
@@ -389,6 +458,8 @@ export const useQuizLibrary = (): UseQuizLibraryReturn => {
     updateQuiz,
     updateQuizConfig,
     deleteQuiz,
+    shareQuiz,
+    unshareQuiz,
     exportQuizzes,
     importQuizzes,
     parseImportFile,