feat(web): add runtime config provider for server-injected flags

surfsense_web/components/providers/runtime-config.server.tsx

@@ -0,0 +1,15 @@
+import { connection } from "next/server";
+import { RuntimeConfigProvider } from "@/components/providers/runtime-config";
+import { AUTH_TYPE, DEPLOYMENT_MODE, ETL_SERVICE } from "@/lib/env-config";
+
+export async function RuntimeConfig({ children }: { children: React.ReactNode }) {
+	await connection();
+
+	const value = {
+		authType: process.env.AUTH_TYPE ?? AUTH_TYPE,
+		etlService: process.env.ETL_SERVICE ?? ETL_SERVICE,
+		deploymentMode: process.env.DEPLOYMENT_MODE ?? DEPLOYMENT_MODE,
+	};
+
+	return <RuntimeConfigProvider value={value}>{children}</RuntimeConfigProvider>;
+}

surfsense_web/components/providers/runtime-config.tsx

@@ -0,0 +1,48 @@
+"use client";
+
+import { createContext, useContext } from "react";
+
+export type AuthType = "LOCAL" | "GOOGLE" | string;
+export type DeploymentMode = "self-hosted" | "cloud" | string;
+
+export interface RuntimeConfigValue {
+	authType: AuthType;
+	etlService: string;
+	deploymentMode: DeploymentMode;
+}
+
+const RuntimeConfigContext = createContext<RuntimeConfigValue | null>(null);
+
+export function RuntimeConfigProvider({
+	value,
+	children,
+}: {
+	value: RuntimeConfigValue;
+	children: React.ReactNode;
+}) {
+	return <RuntimeConfigContext.Provider value={value}>{children}</RuntimeConfigContext.Provider>;
+}
+
+export function useRuntimeConfig() {
+	const context = useContext(RuntimeConfigContext);
+	if (!context) {
+		throw new Error("useRuntimeConfig must be used within RuntimeConfigProvider");
+	}
+	return context;
+}
+
+export function useIsLocalAuth() {
+	return useRuntimeConfig().authType === "LOCAL";
+}
+
+export function useIsGoogleAuth() {
+	return useRuntimeConfig().authType === "GOOGLE";
+}
+
+export function useIsSelfHosted() {
+	return useRuntimeConfig().deploymentMode === "self-hosted";
+}
+
+export function useIsCloud() {
+	return useRuntimeConfig().deploymentMode === "cloud";
+}