// Production UI and browser installability, in an owned disposable profile.
import { spawn, type ChildProcess } from "node:child_process";
import { existsSync, mkdirSync, readFileSync, writeFileSync } from "node:fs";
import { join } from "node:path";
import { fileURLToPath } from "node:url";
import { expect, it } from "vitest";
import { launchVerificationServer, runControlOmb, type VerificationServer } from "../control-omb.ts";
import { waitForExit } from "../../server/testing/cleanup.ts";
import { ensureUiBrowser } from "./control-omb-ui.ts";

const root = fileURLToPath(new URL("../../", import.meta.url));
const enabled = process.env.OMB_UI_E2E === "1";
const build = process.env.OMB_WEB_APP_BUILD || join(root, "dist");
if (!enabled) console.log("skipping web app UI: build the UI and set OMB_UI_E2E=1 for browser qualification");

async function connect(url: string) {
  const socket = new WebSocket(url);
  const pending = new Map<number, { resolve: (value: any) => void; reject: (error: Error) => void }>();
  const events: string[] = [];
  let next = 0;
  socket.addEventListener("message", (event) => {
    const message = JSON.parse(String(event.data));
    if (message.method) { events.push(message.method); if (events.length > 20) events.shift(); }
    const waiting = pending.get(message.id);
    if (!waiting) return;
    pending.delete(message.id);
    if (message.error) waiting.reject(new Error(message.error.message));
    else waiting.resolve(message.result);
  });
  await new Promise<void>((resolve, reject) => {
    socket.addEventListener("open", () => resolve(), { once: true });
    socket.addEventListener("error", () => reject(new Error("Fixture Chrome connection failed")), { once: true });
  });
  return {
    close: () => {
      for (const waiting of pending.values()) waiting.reject(new Error("Fixture Chrome connection closed"));
      pending.clear();
      socket.close();
    },
    request(method: string, params: unknown = {}, sessionId?: string): Promise<any> {
      const id = ++next;
      return new Promise((resolve, reject) => {
        const timer = setTimeout(() => { pending.delete(id); reject(new Error(`Fixture Chrome ${method} timed out: ${events.join(", ")}`)); }, 30_000);
        pending.set(id, { resolve: value => { clearTimeout(timer); resolve(value); }, reject: error => { clearTimeout(timer); reject(error); } });
        socket.send(JSON.stringify({ id, method, params, ...(sessionId ? { sessionId } : {}) }));
      });
    },
  };
}

(enabled ? it : it.skip)("qualifies the served phone web app and keeps controls inside safe areas", async () => {
  if (!existsSync(join(build, "index.html"))) throw new Error("Run pnpm build before OMB_UI_E2E=1 web-app qualification");
  let fixture: VerificationServer | undefined;
  let chrome: ChildProcess | undefined;
  let cdp: Awaited<ReturnType<typeof connect>> | undefined;
  try {
    const tools = await ensureUiBrowser();
    if (!tools.chrome) throw new Error("This recipe needs the pinned Chrome for Testing");
    fixture = await launchVerificationServer({}, undefined, undefined, undefined, undefined, undefined, [], undefined, build);
    const { url, dataDir, logPath } = fixture.info;
    const { bot } = await runControlOmb(["new-bot", "--name", "Pepper", "--url", url]) as { bot: { id: string; activeTaskId: string } };
    const profile = join(dataDir, "chrome");
    mkdirSync(profile, { recursive: true });
    chrome = spawn(tools.chrome, ["--headless=new", "--no-sandbox", "--no-first-run", "--no-default-browser-check",
      "--disable-background-networking", "--password-store=basic", "--use-mock-keychain", "--remote-debugging-port=0", `--user-data-dir=${profile}`, "about:blank"], {
      env: { PATH: process.env.PATH, HOME: dataDir, USERPROFILE: dataDir, ...(process.env.SystemRoot ? { SystemRoot: process.env.SystemRoot } : {}) },
      stdio: "ignore",
    });
    const portFile = join(profile, "DevToolsActivePort");
    await expect.poll(() => existsSync(portFile), { timeout: 20_000 }).toBe(true);
    const [port, endpoint] = readFileSync(portFile, "utf8").trim().split("\n");
    cdp = await connect(`ws://127.0.0.1:${port}${endpoint}`);
    const target = await cdp.request("Target.createTarget", { url: "about:blank" });
    const attached = await cdp.request("Target.attachToTarget", { targetId: target.targetId, flatten: true });
    const session = attached.sessionId as string;
    const request = (method: string, params: unknown = {}) => cdp!.request(method, params, session);
    const evaluate = async (expression: string) => {
      const value = await request("Runtime.evaluate", { expression, awaitPromise: true, returnByValue: true });
      if (value.exceptionDetails) throw new Error(value.exceptionDetails.text);
      return value.result.value;
    };
    await request("Page.enable");
    await request("Page.addScriptToEvaluateOnNewDocument", { source: "localStorage.setItem('omb-analytics-opt-out','1');localStorage.setItem('omb-email-gate','skipped');localStorage.setItem('grok-move-2026-11','1');localStorage.setItem('modelgo-offer-2026-11','1');" });
    await request("Runtime.enable");
    await request("Emulation.setTouchEmulationEnabled", { enabled: true, maxTouchPoints: 1 });
    await request("Emulation.setDeviceMetricsOverride", { width: 390, height: 844, deviceScaleFactor: 1, mobile: true });
    await request("Page.navigate", { url });
    await expect.poll(() => evaluate("document.querySelector('textarea[aria-label^=\"Message\"]') !== null"), { timeout: 20_000 }).toBe(true);
    // iOS automatically zooms small form text on focus, leaving a standalone
    // window shifted after the keyboard closes. Keep the mention mirror aligned.
    const touchText = await evaluate(`(() => {
      const input = document.querySelector('textarea[aria-label^="Message"]');
      return { input: parseFloat(getComputedStyle(input).fontSize),
        mirror: parseFloat(getComputedStyle(document.querySelector('.mention-editor-mirror')).fontSize) };
    })()`);
    expect(touchText.input).toBeGreaterThanOrEqual(16);
    expect(touchText.mirror).toBe(touchText.input);
    const parsed = await request("Page.getAppManifest");
    expect(parsed.url).toBe(`${url}/manifest.webmanifest`);
    expect(parsed.errors).toEqual([]);
    const installability = await request("Page.getInstallabilityErrors");
    expect(installability.installabilityErrors).toEqual([]);
    await expect.poll(() => evaluate("document.querySelector('textarea[aria-label^=\"Message\"]') !== null"), { timeout: 20_000 }).toBe(true);
    for (const [width, height, insets] of [[390, 844, { top: 44, bottom: 34, left: 0, right: 0 }],
      [844, 390, { top: 0, bottom: 21, left: 44, right: 44 }]] as const) {
      await request("Emulation.setDeviceMetricsOverride", { width, height, deviceScaleFactor: 1, mobile: true });
      await request("Emulation.setSafeAreaInsetsOverride", { insets });
      const box = await evaluate(`(() => { const root=document.getElementById('root').getBoundingClientRect();
        const input=document.querySelector('textarea[aria-label^="Message"]').getBoundingClientRect();
        return {overflow:document.documentElement.scrollWidth>innerWidth, top:input.top, bottom:input.bottom, left:input.left, right:input.right, height:root.height}; })()`);
      expect(box.overflow).toBe(false);
      expect(box.top).toBeGreaterThanOrEqual(insets.top);
      expect(box.bottom).toBeLessThanOrEqual(height - insets.bottom);
      expect(box.left).toBeGreaterThanOrEqual(insets.left);
      expect(box.right).toBeLessThanOrEqual(width - insets.right);
      const shot = await request("Page.captureScreenshot", { format: "png" });
      writeFileSync(`${logPath}.web-app-${width}.png`, Buffer.from(shot.data, "base64"));
    }
    await evaluate("document.querySelector('textarea[aria-label^=\"Message\"]').focus()");
    await request("Input.insertText", { text: "Phone web app fixture message" });
    await request("Input.dispatchKeyEvent", { type: "keyDown", key: "Enter", code: "Enter", windowsVirtualKeyCode: 13 });
    await request("Input.dispatchKeyEvent", { type: "keyUp", key: "Enter", code: "Enter", windowsVirtualKeyCode: 13 });
    const settled = await runControlOmb(["wait", "--bot", bot.id, "--task", bot.activeTaskId, "--timeout", "25", "--url", url]) as { status: string };
    expect(settled.status).toBe("settled");
    await expect.poll(() => evaluate("document.body.textContent.includes('Phone web app fixture message')"), { timeout: 15_000 }).toBe(true);
    await request("Page.reload");
    await expect.poll(() => evaluate("document.body.textContent.includes('Phone web app fixture message')"), { timeout: 15_000 }).toBe(true);
    const messages = await fetch(`${url}/api/threads/${bot.activeTaskId}/messages?limit=50`).then(r => r.json());
    expect(messages.messages.filter((message: { role: string; text: string }) => message.role === "user" && message.text === "Phone web app fixture message")).toHaveLength(1);
    expect(await evaluate("caches.keys()" )).toEqual([]);
    expect(await evaluate("navigator.serviceWorker.getRegistrations().then(items=>items.length)")).toBe(0);
    writeFileSync(`${logPath}.web-app.json`, JSON.stringify({ installability, platform: process.platform }, null, 2));
    console.log(`Web app evidence: ${logPath}.web-app.json`);
  } finally {
    cdp?.close();
    if (chrome) await waitForExit(chrome, { signal: "SIGTERM" });
    await fixture?.close();
  }
}, 660_000);