import * as fs from "node:fs";import * as os from "node:os";import * as path from "node:path"; import { afterEach, describe, expect, it } from "vitest"; import {  DEFAULT_DESKTOP_SETTINGS,  readDesktopSettings,  resolveDefaultDesktopSettings,  setDesktopServerExposurePreference,  setDesktopUpdateChannelPreference,  writeDesktopSettings,} from "./desktopSettings.ts"; const tempDirectories: string[] = []; afterEach(() => {  for (const directory of tempDirectories.splice(0)) {    fs.rmSync(directory, { recursive: true, force: true });  }}); function makeSettingsPath() {  const directory = fs.mkdtempSync(path.join(os.tmpdir(), "t3-desktop-settings-test-"));  tempDirectories.push(directory);  return path.join(directory, "desktop-settings.json");} describe("desktopSettings", () => {  it("returns defaults when no settings file exists", () => {    expect(readDesktopSettings(makeSettingsPath(), "0.0.17")).toEqual(DEFAULT_DESKTOP_SETTINGS);  });   it("defaults packaged nightly builds to the nightly update channel", () => {    expect(resolveDefaultDesktopSettings("0.0.17-nightly.20260415.1")).toEqual({      serverExposureMode: "local-only",      updateChannel: "nightly",      updateChannelConfiguredByUser: false,    });  });   it("persists and reloads the configured server exposure mode", () => {    const settingsPath = makeSettingsPath();     writeDesktopSettings(settingsPath, {      serverExposureMode: "network-accessible",      updateChannel: "latest",      updateChannelConfiguredByUser: true,    });     expect(readDesktopSettings(settingsPath, "0.0.17")).toEqual({      serverExposureMode: "network-accessible",      updateChannel: "latest",      updateChannelConfiguredByUser: true,    });  });   it("preserves the requested network-accessible preference across temporary fallback", () => {    expect(      setDesktopServerExposurePreference(        {          serverExposureMode: "local-only",          updateChannel: "latest",          updateChannelConfiguredByUser: false,        },        "network-accessible",      ),    ).toEqual({      serverExposureMode: "network-accessible",      updateChannel: "latest",      updateChannelConfiguredByUser: false,    });  });   it("persists the requested nightly update channel", () => {    expect(      setDesktopUpdateChannelPreference(        {          serverExposureMode: "local-only",          updateChannel: "latest",          updateChannelConfiguredByUser: false,        },        "nightly",      ),    ).toEqual({      serverExposureMode: "local-only",      updateChannel: "nightly",      updateChannelConfiguredByUser: true,    });  });   it("falls back to defaults when the settings file is malformed", () => {    const settingsPath = makeSettingsPath();    fs.writeFileSync(settingsPath, "{not-json", "utf8");     expect(readDesktopSettings(settingsPath, "0.0.17")).toEqual(DEFAULT_DESKTOP_SETTINGS);  });   it("falls back to the nightly channel for legacy nightly settings without an update track", () => {    const settingsPath = makeSettingsPath();    fs.writeFileSync(settingsPath, JSON.stringify({ serverExposureMode: "local-only" }), "utf8");     expect(readDesktopSettings(settingsPath, "0.0.17-nightly.20260415.1")).toEqual({      serverExposureMode: "local-only",      updateChannel: "nightly",      updateChannelConfiguredByUser: false,    });  });   it("migrates legacy implicit stable settings to nightly when running a nightly build", () => {    const settingsPath = makeSettingsPath();    fs.writeFileSync(      settingsPath,      JSON.stringify({        serverExposureMode: "local-only",        updateChannel: "latest",      }),      "utf8",    );     expect(readDesktopSettings(settingsPath, "0.0.17-nightly.20260415.1")).toEqual({      serverExposureMode: "local-only",      updateChannel: "nightly",      updateChannelConfiguredByUser: false,    });  });   it("preserves an explicit stable choice on nightly builds", () => {    const settingsPath = makeSettingsPath();    fs.writeFileSync(      settingsPath,      JSON.stringify({        serverExposureMode: "local-only",        updateChannel: "latest",        updateChannelConfiguredByUser: true,      }),      "utf8",    );     expect(readDesktopSettings(settingsPath, "0.0.17-nightly.20260415.1")).toEqual({      serverExposureMode: "local-only",      updateChannel: "latest",      updateChannelConfiguredByUser: true,    });  });});