#!/usr/bin/env node
/**
 * ObsiGate — Desktop bridge (desktop.js) unit tests.
 *
 * Tests the pure logic of the Tauri bridge: env detection, invoke degradation,
 * OS theme sync gating, and the first-run wizard decision. No real Tauri needed.
 *
 * Usage: node tests/frontend/desktop.test.mjs
 */

import { strict as assert } from "node:assert";
import { JSDOM } from "jsdom";
import { fileURLToPath, pathToFileURL } from "node:url";
import path from "node:path";

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const REPO_ROOT = path.resolve(__dirname, "..", "..");

// ── JSDOM bootstrap ─────────────────────────────────────────────────────────

const dom = new JSDOM(
  `<!DOCTYPE html><html><body></body></html>`,
  { url: "http://localhost/", pretendToBeVisual: true }
);
const w = dom.window;
globalThis.window = w;
globalThis.document = w.document;
globalThis.localStorage = w.localStorage;

const moduleUrl = pathToFileURL(path.join(REPO_ROOT, "frontend", "js", "desktop.js")).href;
const desktop = await import(moduleUrl);

let passed = 0;
function ok(name, cond) {
  assert.ok(cond, name);
  passed++;
  console.log("  ✓ " + name);
}

// ── Detection ──────────────────────────────────────────────────────────────

console.log("detection");
ok("isTauriEnv false when no __TAURI__", desktop.isTauriEnv() === false);

window.__TAURI__ = { core: { invoke: () => {} } };
ok("isTauriEnv true when __TAURI__ present", desktop.isTauriEnv() === true);

// ── invoke degradation ──────────────────────────────────────────────────────

console.log("invoke");
{
  // Web env: invoke resolves undefined, never throws
  delete window.__TAURI__;
  const r = await desktop.invoke("get_version");
  ok("invoke resolves undefined on web", r === undefined);
}

{
  // Tauri env with working core.invoke
  window.__TAURI__ = { core: { invoke: async (cmd) => "called:" + cmd } };
  const r = await desktop.invoke("get_version");
  ok("invoke forwards to core.invoke", r === "called:get_version");
}

{
  // Tauri env but invoke throws → resolves undefined, no crash
  window.__TAURI__ = { core: { invoke: async () => { throw new Error("boom"); } } };
  const r = await desktop.invoke("get_version");
  ok("invoke swallows IPC errors", r === undefined);
}

// ── getSystemTheme ──────────────────────────────────────────────────────────

console.log("getSystemTheme");
{
  window.__TAURI__ = { core: { invoke: async () => "dark" } };
  ok("getSystemTheme returns Tauri theme", (await desktop.getSystemTheme()) === "dark");

  window.__TAURI__ = { core: { invoke: async () => undefined } };
  const t = await desktop.getSystemTheme();
  ok("getSystemTheme falls back to light/dark", t === "light" || t === "dark");
}

// ── hasExplicitThemeMode / syncSystemTheme ──────────────────────────────────

console.log("theme gating");
localStorage.clear();
ok("no explicit mode initially", desktop.hasExplicitThemeMode() === false);

// Web env: syncSystemTheme is a no-op (does not touch localStorage)
delete window.__TAURI__;
await desktop.syncSystemTheme();
ok("syncSystemTheme no-op on web", localStorage.getItem("obsigate-theme-mode") === null);

// Tauri env + no explicit mode → follows OS theme
window.__TAURI__ = { core: { invoke: async () => "dark" } };
await desktop.syncSystemTheme();
ok("syncSystemTheme sets OS mode on desktop first-run", localStorage.getItem("obsigate-theme-mode") === "dark");

// Tauri env + explicit mode → never overrides
localStorage.setItem("obsigate-theme-mode", "light");
window.__TAURI__ = { core: { invoke: async () => "dark" } };
await desktop.syncSystemTheme();
ok("syncSystemTheme respects explicit mode", localStorage.getItem("obsigate-theme-mode") === "light");

// High-contrast / sepia are never overridden even with no explicit flag check
localStorage.removeItem("obsigate-theme-mode");
localStorage.setItem("obsigate-theme-mode", "high-contrast");
await desktop.syncSystemTheme();
ok("syncSystemTheme never overrides high-contrast", localStorage.getItem("obsigate-theme-mode") === "high-contrast");

// ── Wizard decision ─────────────────────────────────────────────────────────

console.log("wizard");
localStorage.clear();
window.__TAURI__ = { core: { invoke: async () => "dark" } };

ok("shouldShowWizard: desktop, not dismissed, no vault → true",
   desktop.shouldShowWizard({ isDesktop: true, dismissed: false, hasVaultPath: false }) === true);
ok("shouldShowWizard: dismissed → false",
   desktop.shouldShowWizard({ isDesktop: true, dismissed: true, hasVaultPath: false }) === false);
ok("shouldShowWizard: has vault path → false",
   desktop.shouldShowWizard({ isDesktop: true, dismissed: false, hasVaultPath: true }) === false);
ok("shouldShowWizard: web → false",
   desktop.shouldShowWizard({ isDesktop: false, dismissed: false, hasVaultPath: false }) === false);

// dismissWizard persists the flag
desktop.dismissWizard();
ok("dismissWizard persists flag", localStorage.getItem(desktop.getWizardDismissedKey()) === "1");
ok("shouldShowWizard reflects dismissed flag via localStorage",
   desktop.shouldShowWizard({ isDesktop: true, hasVaultPath: false }) === false);

// ── crash banner ────────────────────────────────────────────────────────────

console.log("crash banner");
{
  delete window.__TAURI__;
  desktop.defineBackendCrashBanner();
  ok("defines window.showBackendCrashBanner", typeof window.showBackendCrashBanner === "function");
  window.showBackendCrashBanner();
  ok("crash banner injects DOM node", document.getElementById("backend-crash-banner") !== null);
  window.showBackendCrashBanner(); // idempotent — no duplicate
  ok("crash banner idempotent", document.querySelectorAll("#backend-crash-banner").length === 1);
}

console.log("\n✅ " + passed + " tests passés");