/**
 * Drives the console's first-run experience in a real Chrome, for
 * scripts/e2e-setup-browser.sh: a brand-new user with nothing signs in, creates
 * a farm, gets gateway settings, connects a (stand-in) gateway with them, adds
 * a printer through the form, sees an alert when it fails, dismisses it, and
 * removes the printer.
 *
 * Results are `ok<TAB>label` / `FAILED<TAB>label`. The password, the gateway
 * token and the printer's access code never reach a log line.
 *
 * Environment: APP_URL, API_BASE, WS_BASE, SUPABASE_E2E_EMAIL,
 * SUPABASE_E2E_PASSWORD, FRAMES_FILE, ACCESS_CODE, CHROME_BIN.
 */
import { readFileSync } from "node:fs";
import puppeteer from "puppeteer-core";

const { APP_URL, API_BASE, WS_BASE, FRAMES_FILE, ACCESS_CODE } = process.env as Record<string, string>;
const email = process.env.SUPABASE_E2E_EMAIL!;
const password = process.env.SUPABASE_E2E_PASSWORD!;
const chromeBin = process.env.CHROME_BIN ?? "/usr/bin/google-chrome";

let failed = false;
const say = (good: boolean, label: string, detail = "") => {
  if (!good) failed = true;
  console.log(`${good ? "ok" : "FAILED"}\t${label}${detail ? ` (${detail})` : ""}`);
};

const browser = await puppeteer.launch({
  executablePath: chromeBin,
  headless: true,
  args: ["--no-sandbox", "--disable-dev-shm-usage"],
});

let gateway: ReturnType<typeof Bun.spawn> | undefined;

try {
  const page = await browser.newPage();
  const pageErrors: string[] = [];
  page.on("pageerror", (err) => pageErrors.push(String((err as Error).message ?? err).slice(0, 160)));

  const waitText = (selector: string, text: string, timeout = 30_000) =>
    page
      .waitForFunction(
        (sel: string, want: string) => document.querySelector(sel)?.textContent?.includes(want) ?? false,
        { timeout },
        selector,
        text,
      )
      .then(() => true)
      .catch(() => false);

  await page.goto(`${APP_URL}/login`, { waitUntil: "domcontentloaded", timeout: 120_000 });
  await page.waitForFunction(
    () => typeof (window as any).useNuxtApp === "function" && Boolean((window as any).useNuxtApp().$supabase),
    { timeout: 120_000 },
  );
  const signInError = await page.evaluate(
    async (e: string, p: string) => {
      const { client } = (window as any).useNuxtApp().$supabase;
      const { error } = await client.auth.signInWithPassword({ email: e, password: p });
      return error ? String(error.message) : null;
    },
    email,
    password,
  );
  say(signInError === null, "a brand-new user signs in", signInError ?? "");
  if (signInError) process.exit(1);

  // 1. nothing yet -> pointed at Setup
  await page.goto(`${APP_URL}/`, { waitUntil: "domcontentloaded", timeout: 60_000 });
  say(await waitText(".fleet", "You have no farm yet"), "the empty fleet page points a new user to Setup");

  // 2. onboarding
  await page.goto(`${APP_URL}/setup`, { waitUntil: "domcontentloaded", timeout: 60_000 });
  await page.waitForSelector(".onboarding input", { timeout: 30_000 });
  await page.type(".onboarding input", "Browser Farm");
  await page.click(".onboarding button[type=submit]");
  say(await waitText(".setup__farm h2", "Browser Farm"), "creating a farm from nothing works (org and farm)");

  // 3. gateway settings
  await page.waitForSelector(".gateway-setup button", { timeout: 15_000 });
  say(
    await page.$eval(".gateway-setup", (el) => el.textContent?.includes("No gateway is connected") ?? false),
    "setup says no gateway is connected yet",
  );
  await page.click(".gateway-setup button");
  await page.waitForSelector(".gateway-setup__settings", { timeout: 15_000 });
  const settings = await page.$eval(".gateway-setup__settings", (el) => el.textContent ?? "");
  const farmId = /farm_id = "([^"]+)"/.exec(settings)?.[1] ?? "";
  const proxyToken = /gateway_token = "([^"]+)"/.exec(settings)?.[1] ?? "";
  const uplink = /uplink_url = "([^"]+)"/.exec(settings)?.[1] ?? "";
  say(Boolean(farmId && proxyToken && uplink.endsWith("/ws/edge/v1")), "the page shows complete gateway settings");

  // 4. a gateway configured from exactly what the page showed
  const exchanged = await fetch(`${API_BASE}/auth/edge-token`, {
    method: "POST",
    headers: { "content-type": "application/json" },
    body: JSON.stringify({ farmId, edgeProxyToken: proxyToken }),
  });
  say(exchanged.ok, "the token the page showed is accepted by the cloud");
  const jwt = ((await exchanged.json()) as { token: string }).token;
  gateway = Bun.spawn(["bun", "scripts/fake-gateway-serve.ts", `${WS_BASE}/ws/edge/v1`, jwt, "120", FRAMES_FILE], {
    env: { ...process.env, FARM_ID: farmId, TELEMETRY_AFTER_PROVISION: "1" },
    stdout: "ignore",
    stderr: "ignore",
  });
  say(await waitText(".gateway-setup", "A gateway is connected", 30_000), "the page notices the gateway connecting");
  await page.click(".gateway-setup button:last-of-type"); // Done: the token leaves the screen
  say(
    !(await page.$eval("body", (el, token) => el.textContent?.includes(token) ?? false, proxyToken)),
    "dismissing the settings removes the token from the page",
  );

  // 5. add a printer
  const fields = await page.$$(".add-printer form input");
  await fields[0]!.type("Bench P1P");
  await fields[1]!.type("192.168.0.77");
  await fields[2]!.type("01P00A000000007");
  await fields[3]!.type(ACCESS_CODE);
  await page.click(".add-printer button[type=submit]");
  say(await waitText(".add-printer", "Added Bench P1P", 45_000), "adding a printer through the form succeeds");
  say(await waitText(".managed", "Bench P1P"), "the printer appears in the list");
  const leftover = await page.$eval(".add-printer input[type=password]", (el) => (el as HTMLInputElement).value);
  say(leftover === "", "the access code is cleared from the form after sending");
  const frames = readFileSync(FRAMES_FILE, "utf8");
  say(frames.includes(ACCESS_CODE), "the gateway received the access code");

  // 6. the printer fails -> an alert on the fleet page
  await page.goto(`${APP_URL}/`, { waitUntil: "domcontentloaded", timeout: 60_000 });
  say(await waitText(".alert-list", "the print failed", 60_000), "a failed print raises an alert on the fleet page");
  await page.click(".alert-list button");
  const gone = await page
    .waitForFunction(() => document.querySelector(".alert-list") === null, { timeout: 20_000 })
    .then(() => true)
    .catch(() => false);
  say(gone, "dismissing the alert removes it");

  // 7. remove
  await page.goto(`${APP_URL}/setup`, { waitUntil: "domcontentloaded", timeout: 60_000 });
  await page.waitForSelector(".managed button", { timeout: 20_000 });
  await page.click(".managed button");
  say(await waitText(".managed", "forget its access code"), "removing asks first, and says what it deletes");
  const buttons = await page.$$(".managed button");
  await buttons[0]!.click(); // "Yes, remove"
  const removed = await page
    .waitForFunction(() => document.querySelector(".managed") === null, { timeout: 30_000 })
    .then(() => true)
    .catch(() => false);
  say(removed, "the printer is removed");
  say(readFileSync(FRAMES_FILE, "utf8").includes("remove_printer"), "the gateway was told to forget it");

  say(pageErrors.length === 0, "no uncaught page errors", pageErrors.slice(0, 2).join(" | "));
} finally {
  gateway?.kill();
  await browser.close();
}

process.exit(failed ? 1 : 0);