[#211] Refresh Library after a update (#212)

Library had to be refreshed manually to see the latest manga updates.

src/components/library/LibraryMangaGrid.tsx

@@ -79,18 +79,18 @@ const sortManga = (
     return result;
 };
 
-const LibraryMangaGrid: React.FC<IMangaGridProps> = ({
-    mangas, isLoading, hasNextPage, lastPageNum, setLastPageNum, message,
+const LibraryMangaGrid: React.FC<IMangaGridProps & { lastLibraryUpdate: number }> = ({
+    mangas, isLoading, hasNextPage, lastPageNum, setLastPageNum, message, lastLibraryUpdate,
 }) => {
     const [query] = useQueryParam('query', StringParam);
     const { options } = useLibraryOptionsContext();
     const { unread, downloaded } = options;
 
     const sortedManga = useMemo(() => sortManga(mangas, options.sorts, options.sortDesc),
-        [mangas, options.sorts, options.sortDesc]);
+        [mangas, lastLibraryUpdate, options.sorts, options.sortDesc]);
 
     const filteredManga = useMemo(() => filterManga(sortedManga, query, unread, downloaded),
-        [sortedManga, query, unread, downloaded]);
+        [sortedManga, lastLibraryUpdate, query, unread, downloaded]);
 
     const showFilteredOutMessage = (unread != null || downloaded != null || query)
         && filteredManga.length === 0 && mangas.length > 0;

src/components/library/UpdateChecker.tsx

@@ -27,7 +27,11 @@ function Progress({ progress }: IProgressProps) {
 
 const baseWebsocketUrl = JSON.parse(window.localStorage.getItem('serverBaseURL')!).replace('http', 'ws');
 
-function UpdateChecker() {
+interface IUpdateCheckerProps {
+    handleFinishedUpdate: (time: number) => void
+}
+
+function UpdateChecker({ handleFinishedUpdate }: IUpdateCheckerProps) {
     const [loading, setLoading] = useState(false);
     const [progress, setProgress] = useState(0);
 
@@ -44,16 +48,36 @@ function UpdateChecker() {
 
     useEffect(() => {
         const wsc = new WebSocket(`${baseWebsocketUrl}/api/v1/update`);
-        wsc.onmessage = (e) => {
-            const data = JSON.parse(e.data) as IUpdateStatus;
-            const { COMPLETE = [], RUNNING = [], PENDING = [] } = data.statusMap;
 
-            setLoading(data.running);
+        // "loading" can't be used since it will be outdated once the state gets changed
+        // it could be used by adding it as a dependency of "useEffect" but then the socket would
+        // get closed and connected again every time it changes
+        let updateStarted = false;
+
+        wsc.onmessage = (e) => {
+            const { running, statusMap } = JSON.parse(e.data) as IUpdateStatus;
+            const { COMPLETE = [], RUNNING = [], PENDING = [] } = statusMap;
+
             const currentProgress = 100 * (
                 COMPLETE.length / (COMPLETE.length + RUNNING.length + PENDING.length)
             );
 
+            const isUpdateFinished = currentProgress === 100;
+            const ignoreFaultyMessage = !updateStarted && !running && isUpdateFinished;
+
+            // for some reason the server sends 100% completed manga updates when connecting to the
+            // socket while no update is running
+            if (ignoreFaultyMessage) {
+                return;
+            }
+
+            updateStarted = running;
+            setLoading(running);
             setProgress(Number.isNaN(currentProgress) ? 0 : currentProgress);
+
+            if (isUpdateFinished) {
+                handleFinishedUpdate(Date.now());
+            }
         };
 
         return () => wsc.close();

src/screens/Library.tsx

@@ -21,6 +21,7 @@ import { useQuery } from 'util/client';
 import UpdateChecker from '../components/library/UpdateChecker';
 
 export default function Library() {
+    const [lastLibraryUpdate, setLastLibraryUpdate] = useState(Date.now());
     const { data: tabsData, error: tabsError, loading } = useQuery<ICategory[]>('/api/v1/category');
     const tabs = tabsData ?? [];
 
@@ -43,7 +44,7 @@ export default function Library() {
             <>
                 <AppbarSearch />
                 <LibraryToolbarMenu />
-                <UpdateChecker />
+                <UpdateChecker handleFinishedUpdate={setLastLibraryUpdate} />
             </>,
         );
         return () => {
@@ -76,6 +77,7 @@ export default function Library() {
         return (
             <LibraryMangaGrid
                 mangas={mangas}
+                lastLibraryUpdate={lastLibraryUpdate}
                 hasNextPage={false}
                 lastPageNum={lastPageNum}
                 setLastPageNum={setLastPageNum}
@@ -114,6 +116,7 @@ export default function Library() {
                         : (
                             <LibraryMangaGrid
                                 mangas={mangas}
+                                lastLibraryUpdate={lastLibraryUpdate}
                                 hasNextPage={false}
                                 lastPageNum={lastPageNum}
                                 setLastPageNum={setLastPageNum}