Added dynamic urls instead of a static ones.

Frontend/src/App.jsx

@@ -14,6 +14,7 @@ import {
   FetchRoots,
   FetchSettings,
   FetchTheme,
+  FetchTree,
 } from "./Api.js";
 import { PaletteRoles } from "./ThemeRoles.js";
 
@@ -39,6 +40,19 @@ function GetParentPath(FilePath) {
   return FilePath.includes("/") ? FilePath.slice(0, FilePath.lastIndexOf("/")) : "";
 }
 
+function BuildLocationPath(RootName, ViewPath, ViewIsDirectory) {
+  const Segments = [RootName, ...ViewPath.split("/").filter(Boolean)];
+  const Encoded = "/" + Segments.map(encodeURIComponent).join("/");
+  return ViewIsDirectory ? `${Encoded}/` : Encoded;
+}
+
+function ParseLocationPath(Pathname) {
+  const IsDirectory = Pathname.endsWith("/");
+  const Segments = Pathname.split("/").filter(Boolean).map(decodeURIComponent);
+  const [RootName, ...RestSegments] = Segments;
+  return { RootName: RootName || null, Path: RestSegments.join("/"), IsDirectory };
+}
+
 export default function App() {
   const [AuthState, SetAuthState] = useState("Loading");
   const [CurrentUser, SetCurrentUser] = useState(null);
@@ -75,9 +89,7 @@ export default function App() {
 
     FetchRoots().then((Fetched) => {
       SetRoots(Fetched);
-      if (Fetched.length > 0) {
-        SetActiveRoot(Fetched[0].Name);
-      }
+      RestoreFromLocation(Fetched);
     });
 
     FetchSettings().then((FetchedSettings) => {
@@ -87,6 +99,71 @@ export default function App() {
     });
   }, [AuthState]);
 
+  useEffect(() => {
+    if (AuthState !== "LoggedIn" || !ActiveRoot) return;
+
+    const Url = BuildLocationPath(ActiveRoot, ViewPath, ViewIsDirectory);
+    if (window.location.pathname !== Url) {
+      window.history.pushState({}, "", Url);
+    }
+  }, [AuthState, ActiveRoot, ViewPath, ViewIsDirectory]);
+
+  useEffect(() => {
+    if (AuthState !== "LoggedIn") return;
+
+    function HandlePopState() {
+      RestoreFromLocation(Roots);
+    }
+
+    window.addEventListener("popstate", HandlePopState);
+    return () => window.removeEventListener("popstate", HandlePopState);
+  }, [AuthState, Roots]);
+
+  async function RestoreFromLocation(RootsList) {
+    const { RootName, Path, IsDirectory } = ParseLocationPath(window.location.pathname);
+    const MatchedRoot = RootsList.find((Root) => Root.Name === RootName);
+
+    if (!MatchedRoot) {
+      if (RootsList.length > 0) {
+        SetActiveRoot(RootsList[0].Name);
+      }
+      return;
+    }
+
+    SetActiveRoot(RootName);
+
+    if (!Path) {
+      HandleNavigateDirectory("");
+      return;
+    }
+
+    const LastSlash = Path.lastIndexOf("/");
+    const ParentPath = LastSlash === -1 ? "" : Path.slice(0, LastSlash);
+    const EntryName = LastSlash === -1 ? Path : Path.slice(LastSlash + 1);
+
+    try {
+      const Entries = await FetchTree(RootName, ParentPath);
+      const Entry = Entries.find((Candidate) => Candidate.Name === EntryName);
+
+      if (!Entry) {
+        HandleNavigateDirectory("");
+        return;
+      }
+
+      if (Entry.IsDirectory) {
+        if (IsDirectory) {
+          HandleNavigateDirectory(Path);
+        } else {
+          OpenDirectoryNote(Path, Entry.Note);
+        }
+      } else {
+        HandleSelectFile(Path, Entry.FileType);
+      }
+    } catch (Error) {
+      HandleNavigateDirectory("");
+    }
+  }
+
   function HandleAuthenticated(User) {
     SetCurrentUser(User);
     SetAuthState("LoggedIn");