feat(web): connect new chat UI to agent filesystem APIs

surfsense_desktop/src/modules/agent-filesystem.ts

@@ -0,0 +1,74 @@
+import { app, dialog } from "electron";
+import { mkdir, readFile, writeFile } from "node:fs/promises";
+import { dirname, join } from "node:path";
+
+export type AgentFilesystemMode = "cloud" | "desktop_local_folder";
+
+export interface AgentFilesystemSettings {
+	mode: AgentFilesystemMode;
+	localRootPath: string | null;
+	updatedAt: string;
+}
+
+const SETTINGS_FILENAME = "agent-filesystem-settings.json";
+
+function getSettingsPath(): string {
+	return join(app.getPath("userData"), SETTINGS_FILENAME);
+}
+
+function getDefaultSettings(): AgentFilesystemSettings {
+	return {
+		mode: "cloud",
+		localRootPath: null,
+		updatedAt: new Date().toISOString(),
+	};
+}
+
+export async function getAgentFilesystemSettings(): Promise<AgentFilesystemSettings> {
+	try {
+		const raw = await readFile(getSettingsPath(), "utf8");
+		const parsed = JSON.parse(raw) as Partial<AgentFilesystemSettings>;
+		if (parsed.mode !== "cloud" && parsed.mode !== "desktop_local_folder") {
+			return getDefaultSettings();
+		}
+		return {
+			mode: parsed.mode,
+			localRootPath: parsed.localRootPath ?? null,
+			updatedAt: parsed.updatedAt ?? new Date().toISOString(),
+		};
+	} catch {
+		return getDefaultSettings();
+	}
+}
+
+export async function setAgentFilesystemSettings(
+	settings: Partial<Pick<AgentFilesystemSettings, "mode" | "localRootPath">>
+): Promise<AgentFilesystemSettings> {
+	const current = await getAgentFilesystemSettings();
+	const nextMode =
+		settings.mode === "cloud" || settings.mode === "desktop_local_folder"
+			? settings.mode
+			: current.mode;
+	const next: AgentFilesystemSettings = {
+		mode: nextMode,
+		localRootPath:
+			settings.localRootPath === undefined ? current.localRootPath : settings.localRootPath,
+		updatedAt: new Date().toISOString(),
+	};
+
+	const settingsPath = getSettingsPath();
+	await mkdir(dirname(settingsPath), { recursive: true });
+	await writeFile(settingsPath, JSON.stringify(next, null, 2), "utf8");
+	return next;
+}
+
+export async function pickAgentFilesystemRoot(): Promise<string | null> {
+	const result = await dialog.showOpenDialog({
+		title: "Select local folder for Agent Filesystem",
+		properties: ["openDirectory"],
+	});
+	if (result.canceled || result.filePaths.length === 0) {
+		return null;
+	}
+	return result.filePaths[0] ?? null;
+}