remove unused stuff, refactor frontend folder structure

client/ui/frontend/src/contexts/ClientVersionContext.tsx

@@ -0,0 +1,134 @@
+import {
+    createContext,
+    useCallback,
+    useContext,
+    useEffect,
+    useMemo,
+    useRef,
+    useState,
+    type ReactNode,
+} from "react";
+import { Dialogs, Events } from "@wailsio/runtime";
+
+
+import { Update as UpdateSvc, WindowManager } from "@bindings/services";
+import type { State as UpdateState } from "@bindings/updater/models.js";
+import i18next from "@/lib/i18n";
+import { formatErrorMessage } from "@/lib/errors";
+
+// Daemon-down is already surfaced globally by DaemonUnavailableOverlay and
+// (for Trigger) handled by the install window's polling-grace branch; a
+// second popup on top of those is pure noise. Every Update RPC routes
+// through the shared gRPC conn, so the Unavailable code is the marker.
+const isDaemonUnavailable = (e: unknown): boolean => {
+    const msg = e instanceof Error ? e.message : String(e);
+    return msg.includes("code = Unavailable");
+};
+
+type ClientVersionContextValue = {
+    updateAvailable: boolean;
+    updateVersion: string | null;
+    enforced: boolean;
+    installing: boolean;
+    triggerUpdate: () => void;
+    updating: boolean;
+};
+
+const EVENT_UPDATE_STATE = "netbird:update:state";
+
+const emptyState: UpdateState = {
+    available: false,
+    version: "",
+    enforced: false,
+    installing: false,
+};
+
+const ClientVersionContext = createContext<ClientVersionContextValue | null>(null);
+
+export const useClientVersion = () => {
+    const ctx = useContext(ClientVersionContext);
+    if (!ctx) {
+        throw new Error("useClientVersion must be used inside ClientVersionProvider");
+    }
+    return ctx;
+};
+
+export const ClientVersionProvider = ({ children }: { children: ReactNode }) => {
+    const [state, setState] = useState<UpdateState>(emptyState);
+    const [updating, setUpdating] = useState(false);
+
+    useEffect(() => {
+        let cancelled = false;
+        UpdateSvc.GetState()
+            .then((s) => {
+                if (cancelled || !s) return;
+                setState(s);
+            })
+            .catch((e) => {
+                if (cancelled || isDaemonUnavailable(e)) return;
+                void Dialogs.Error({
+                    Title: i18next.t("update.error.loadStateTitle"),
+                    Message: formatErrorMessage(e),
+                });
+            });
+        const off = Events.On(EVENT_UPDATE_STATE, (ev: { data: UpdateState }) => {
+            if (ev?.data) setState(ev.data);
+        });
+        return () => {
+            cancelled = true;
+            off?.();
+        };
+    }, []);
+
+    // Force-install branch: daemon's progress_window:show flipped installing
+    // to true while the UI was idle. Open the install window so the user
+    // sees the progress UI without having to click anything.
+    const prevInstallingRef = useRef(false);
+    useEffect(() => {
+        if (state.installing && !prevInstallingRef.current) {
+            WindowManager.OpenInstallProgress(state.version || "").catch(console.error);
+        }
+        prevInstallingRef.current = state.installing;
+    }, [state.installing, state.version]);
+
+    // Enforced user-driven branch: kick Trigger() in the background, then
+    // hand off to the install window. The window owns the polling loop and
+    // the final Quit() — this provider just fires the trigger.
+    const triggerUpdate = useCallback(() => {
+        setUpdating(true);
+        WindowManager.OpenInstallProgress(state.version || "").catch(console.error);
+        UpdateSvc.Trigger()
+            .catch(async (e) => {
+                // The daemon may already be down (force-install branch raced
+                // us). The install window's polling loop handles that case.
+                // Anything else is a real failure — close the install window
+                // (otherwise it spins forever on a daemon that won't ever
+                // produce a result) and surface the error.
+                if (isDaemonUnavailable(e)) return;
+                WindowManager.CloseInstallProgress().catch(console.error);
+                await Dialogs.Error({
+                    Title: i18next.t("update.error.triggerTitle"),
+                    Message: formatErrorMessage(e),
+                });
+            })
+            .finally(() => setUpdating(false));
+    }, [state.version]);
+
+    const value = useMemo<ClientVersionContextValue>(
+        () => ({
+            updateAvailable: state.available,
+            updateVersion: state.version || null,
+            enforced: state.enforced,
+            installing: state.installing,
+            triggerUpdate,
+            updating,
+        }),
+        [state, triggerUpdate, updating],
+    );
+
+    return (
+        <ClientVersionContext.Provider value={value}>
+            {children}
+        </ClientVersionContext.Provider>
+    );
+};