persist deformation job progress across refresh

WebSite/src/App.tsx

@@ -77,10 +77,33 @@ type LibraryInfo = {
   }[];
 };
 
+type StoredDeformationJob = {
+  job: BackendJob;
+  progress: number;
+};
+
+const DEFORMATION_JOB_STORAGE_KEY = 'head_ct_morph_deformation_job';
+
 const API_BASE = typeof window === 'undefined'
   ? 'http://127.0.0.1:8787'
   : `${window.location.protocol}//${window.location.hostname}:8787`;
 
+function readStoredDeformationJob(): StoredDeformationJob | null {
+  if (typeof window === 'undefined') return null;
+  try {
+    const rawValue = window.localStorage.getItem(DEFORMATION_JOB_STORAGE_KEY);
+    if (!rawValue) return null;
+    const parsed = JSON.parse(rawValue) as StoredDeformationJob;
+    if (!parsed?.job?.id) return null;
+    return {
+      job: parsed.job,
+      progress: Math.max(0, Math.min(100, parsed.progress || 0)),
+    };
+  } catch {
+    return null;
+  }
+}
+
 function LibraryDicomPreview({ item }: { item: LibraryItem }) {
   const [sliceIndex, setSliceIndex] = useState(Math.max(0, Math.floor((item.fileCount || 1) / 2)));
   const [requestedSliceIndex, setRequestedSliceIndex] = useState(sliceIndex);
@@ -166,6 +189,8 @@ function LibraryDicomPreview({ item }: { item: LibraryItem }) {
 }
 
 export default function App() {
+  const restoredDeformationJob = useRef(readStoredDeformationJob()).current;
+
   // --- Authentication State ---
   const [isLoggedIn, setIsLoggedIn] = useState(false);
   const [currentUser, setCurrentUser] = useState<User | null>(null);
@@ -202,14 +227,14 @@ export default function App() {
   // --- Simulation State (Workspace) ---
   const [cervicalRotation, setCervicalRotation] = useState(14.5);
   const [transitionWidth, setTransitionWidth] = useState(90);
-  const [isSimulating, setIsSimulating] = useState(false);
+  const [isSimulating, setIsSimulating] = useState(restoredDeformationJob?.job.status === 'running');
-  const [progress, setProgress] = useState(0);
+  const [progress, setProgress] = useState(restoredDeformationJob?.job.status === 'completed' ? 100 : restoredDeformationJob?.progress || 0);
   const [toastMessage, setToastMessage] = useState("");
   const [backendOnline, setBackendOnline] = useState(false);
   const [backendMessage, setBackendMessage] = useState('正在连接本地 Python 后端...');
   const [previewImage, setPreviewImage] = useState('');
   const [isPreviewLoading, setIsPreviewLoading] = useState(false);
-  const [deformationJob, setDeformationJob] = useState<BackendJob | null>(null);
+  const [deformationJob, setDeformationJob] = useState<BackendJob | null>(restoredDeformationJob?.job || null);
   const [videoJob, setVideoJob] = useState<BackendJob | null>(null);
   const [videoMaxAngle, setVideoMaxAngle] = useState(20);
   const [videoDuration, setVideoDuration] = useState(6);
@@ -261,6 +286,15 @@ export default function App() {
 
   const fileUrl = (path?: string) => path ? `${API_BASE}/api/file?path=${encodeURIComponent(path)}` : '';
 
+  const clearDeformationTask = () => {
+    setDeformationJob(null);
+    setProgress(0);
+    setIsSimulating(false);
+    if (typeof window !== 'undefined') {
+      window.localStorage.removeItem(DEFORMATION_JOB_STORAGE_KEY);
+    }
+  };
+
   const loadLibrary = async () => {
     const data = await apiRequest('/api/library');
     const items = data.items || [];
@@ -285,11 +319,30 @@ export default function App() {
     refreshBackendDefaults();
   }, []);
 
+  useEffect(() => {
+    if (typeof window === 'undefined') return;
+    if (!deformationJob) {
+      window.localStorage.removeItem(DEFORMATION_JOB_STORAGE_KEY);
+      return;
+    }
+
+    window.localStorage.setItem(
+      DEFORMATION_JOB_STORAGE_KEY,
+      JSON.stringify({
+        job: deformationJob,
+        progress: deformationJob.status === 'completed' ? 100 : progress,
+      })
+    );
+  }, [deformationJob, progress]);
+
   useEffect(() => {
     if (!deformationJob || deformationJob.status !== 'running') return;
-    const timer = setInterval(async () => {
+
+    let isActive = true;
+    const pollDeformationJob = async () => {
       try {
         const job = await apiRequest(`/api/job?id=${deformationJob.id}`) as BackendJob;
+        if (!isActive) return;
         setDeformationJob(job);
         setProgress(value => job.status === 'completed' ? 100 : Math.min(value + 8, 95));
         if (job.status === 'completed') {
@@ -301,11 +354,18 @@ export default function App() {
           showToast(job.error || '形变任务失败');
         }
       } catch (error) {
+        if (!isActive) return;
         setIsSimulating(false);
         setDeformationJob(job => job ? { ...job, status: 'failed', error: (error as Error).message } : null);
       }
-    }, 1500);
+    };
-    return () => clearInterval(timer);
+
+    pollDeformationJob();
+    const timer = setInterval(pollDeformationJob, 1500);
+    return () => {
+      isActive = false;
+      clearInterval(timer);
+    };
   }, [deformationJob?.id, deformationJob?.status]);
 
   useEffect(() => {
@@ -412,7 +472,7 @@ export default function App() {
       setSelectedLibraryId(data.id || items[0]?.id || '');
       setCurrentPage('workspace');
       setPreviewImage('');
-      setDeformationJob(null);
+      clearDeformationTask();
       showToast(`已上传 ${data.fileCount || files.length} 张 DICOM`);
     } catch (error) {
       const message = (error as Error).message === 'Failed to fetch'
@@ -435,7 +495,7 @@ export default function App() {
       if (selectedLibraryId === id) {
         setSelectedLibraryId(data.items?.[0]?.id || '');
         setPreviewImage('');
-        setDeformationJob(null);
+        clearDeformationTask();
       }
       showToast('影像已删除');
     } catch (error) {
@@ -686,7 +746,7 @@ export default function App() {
                         onChange={event => {
                           setSelectedLibraryId(event.target.value);
                           setPreviewImage('');
-                          setDeformationJob(null);
+                          clearDeformationTask();
                         }}
                         className="w-full px-3 py-2.5 bg-slate-50 border border-slate-200 rounded-xl outline-none focus:ring-2 focus:ring-blue-500 text-xs font-bold text-slate-700"
                       >
@@ -979,7 +1039,7 @@ export default function App() {
                             if (item.status === 'processed') {
                               setSelectedLibraryId(item.id);
                               setPreviewImage('');
-                              setDeformationJob(null);
+                              clearDeformationTask();
                               setCurrentPage('workspace');
                               showToast(`已选择 ${item.patientId} 作为工作站数据源`);
                             } else {