feat: no login experience and prem tokens

surfsense_web/contexts/anonymous-mode.tsx

@@ -0,0 +1,74 @@
+"use client";
+
+import { createContext, type ReactNode, useContext, useEffect, useMemo, useState } from "react";
+import { anonymousChatApiService } from "@/lib/apis/anonymous-chat-api.service";
+
+export interface AnonymousModeContextValue {
+	isAnonymous: true;
+	modelSlug: string;
+	setModelSlug: (slug: string) => void;
+	uploadedDoc: { filename: string; sizeBytes: number } | null;
+	setUploadedDoc: (doc: { filename: string; sizeBytes: number } | null) => void;
+	resetKey: number;
+	resetChat: () => void;
+}
+
+interface AuthenticatedContextValue {
+	isAnonymous: false;
+}
+
+type ContextValue = AnonymousModeContextValue | AuthenticatedContextValue;
+
+const DEFAULT_VALUE: AuthenticatedContextValue = { isAnonymous: false };
+
+const AnonymousModeContext = createContext<ContextValue>(DEFAULT_VALUE);
+
+export function AnonymousModeProvider({
+	initialModelSlug,
+	children,
+}: {
+	initialModelSlug: string;
+	children: ReactNode;
+}) {
+	const [modelSlug, setModelSlug] = useState(initialModelSlug);
+	const [uploadedDoc, setUploadedDoc] = useState<{ filename: string; sizeBytes: number } | null>(
+		null
+	);
+	const [resetKey, setResetKey] = useState(0);
+
+	const resetChat = () => setResetKey((k) => k + 1);
+
+	useEffect(() => {
+		anonymousChatApiService
+			.getDocument()
+			.then((doc) => {
+				if (doc) {
+					setUploadedDoc({ filename: doc.filename, sizeBytes: doc.size_bytes });
+				}
+			})
+			.catch(() => {});
+	}, []);
+
+	const value = useMemo<AnonymousModeContextValue>(
+		() => ({
+			isAnonymous: true,
+			modelSlug,
+			setModelSlug,
+			uploadedDoc,
+			setUploadedDoc,
+			resetKey,
+			resetChat,
+		}),
+		[modelSlug, uploadedDoc, resetKey]
+	);
+
+	return <AnonymousModeContext.Provider value={value}>{children}</AnonymousModeContext.Provider>;
+}
+
+export function useAnonymousMode(): ContextValue {
+	return useContext(AnonymousModeContext);
+}
+
+export function useIsAnonymous(): boolean {
+	return useContext(AnonymousModeContext).isAnonymous;
+}