#!/usr/bin/env node
/** Headless Chrome walkthrough: screenshots + console errors for every UI. */
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';
import puppeteer from 'puppeteer-core';

const ROOT = path.join(path.dirname(fileURLToPath(import.meta.url)), '..');
const SHOTS = path.join(ROOT, 'screenshots');
const LOG = path.join(ROOT, 'walkthrough-console.json');
const CHROME =
  process.env.CHROME_PATH ||
  '/Applications/Google Chrome.app/Contents/MacOS/Google Chrome';

fs.mkdirSync(SHOTS, { recursive: true });

const errors = [];
function note(pageName, type, text) {
  errors.push({ page: pageName, type, text: String(text).slice(0, 800) });
}

const browser = await puppeteer.launch({
  executablePath: CHROME,
  headless: 'new',
  args: ['--no-sandbox', '--window-size=1440,900', '--disable-dev-shm-usage'],
  defaultViewport: { width: 1440, height: 900 },
});

async function pageFor(name) {
  const page = await browser.newPage();
  page.on('pageerror', (err) => note(name, 'pageerror', err.message));
  page.on('console', (msg) => {
    if (msg.type() === 'error') note(name, 'console', msg.text());
  });
  page.on('response', (res) => {
    if (res.status() >= 500) note(name, 'http', `${res.status()} ${res.url()}`);
  });
  return page;
}

async function shot(page, file) {
  await page.screenshot({ path: path.join(SHOTS, file), fullPage: true });
}

async function safeGoto(page, url, name) {
  try {
    await page.goto(url, { waitUntil: 'networkidle2', timeout: 20000 });
  } catch (err) {
    note(name, 'goto', `${url} ${err.message}`);
    try {
      await page.goto(url, { waitUntil: 'domcontentloaded', timeout: 12000 });
    } catch (err2) {
      note(name, 'goto2', `${url} ${err2.message}`);
    }
  }
}

try {
  // Operator console
  {
    const p = await pageFor('fleet');
    await safeGoto(p, 'http://127.0.0.1:3850/', 'fleet');
    await new Promise((r) => setTimeout(r, 1500));
    await shot(p, '01-console-fleet.png');
    const more = await p.$('.more-btn');
    if (more) {
      await more.click();
      await new Promise((r) => setTimeout(r, 300));
      await shot(p, '01b-console-fleet-overflow.png');
      await p.keyboard.press('Escape');
    }
    await p.click('nav button[data-tab="trace"]');
    await new Promise((r) => setTimeout(r, 400));
    await shot(p, '02-console-trace.png');
    const run = await p.$('#run');
    if (run) {
      await run.click();
      await new Promise((r) => setTimeout(r, 2500));
      await shot(p, '02b-console-trace-run.png');
    }
    await p.click('nav button[data-tab="docs"]');
    await new Promise((r) => setTimeout(r, 400));
    await shot(p, '03-console-docs.png');
    await p.close();
  }

  // Simulator
  {
    const p = await pageFor('simulator');
    await safeGoto(p, 'http://127.0.0.1:3847/', 'simulator');
    await new Promise((r) => setTimeout(r, 800));
    await shot(p, '04-simulator.png');
    const run = await p.$('#run');
    if (run) {
      await run.click();
      await new Promise((r) => setTimeout(r, 2500));
      await shot(p, '04b-simulator-run.png');
    }
    await p.close();
  }

  // Staff UIs
  for (const [name, url, file, extra] of [
    ['cs', 'http://127.0.0.1:3011/', '05-cs.png', true],
    ['sales', 'http://127.0.0.1:3012/', '06-sales.png', false],
    ['accounting', 'http://127.0.0.1:3013/', '07-accounting.png', false],
    ['staff', 'http://127.0.0.1:3025/', '08-access-staff.png', true],
  ]) {
    const p = await pageFor(name);
    await safeGoto(p, url, name);
    await shot(p, file.replace('.png', '-empty.png'));
    const btn = await p.$('button');
    if (btn) {
      await btn.click();
      await new Promise((r) => setTimeout(r, 800));
    }
    await shot(p, file);
    if (extra) {
      const credit = await p.$('button[onclick="credit()"]');
      if (credit) {
        await credit.click();
        await new Promise((r) => setTimeout(r, 800));
        await shot(p, file.replace('.png', '-credit.png'));
      }
    }
    await p.close();
  }

  // Admin
  {
    const p = await pageFor('admin');
    await safeGoto(p, 'http://127.0.0.1:3000/admin/', 'admin');
    await shot(p, '09-admin-login.png');
    await p.type('#login-username', 'admin');
    await p.type('#login-password', 'admin-dev-key');
    await p.click('#login-form button[type="submit"]');
    await new Promise((r) => setTimeout(r, 1200));
    await shot(p, '10-admin-rate-card.png');
    const tabs = await p.$$('aside nav button');
    for (const [i, label] of [
      [1, '11-admin-tiers.png'],
      [2, '12-admin-customers.png'],
      [3, '13-admin-statement.png'],
      [4, '14-admin-invoices.png'],
      [5, '15-admin-reports.png'],
    ]) {
      if (tabs[i]) {
        await tabs[i].click();
        await new Promise((r) => setTimeout(r, 600));
        await shot(p, label);
      }
    }
    const edit = await p.$('button[onclick^="openCustomerDrawer"]');
    if (edit) {
      await p.click('aside nav button[data-tab="customers"]');
      await new Promise((r) => setTimeout(r, 400));
      const e2 = await p.$('button[onclick^="openCustomerDrawer"]');
      if (e2) {
        await e2.click();
        await new Promise((r) => setTimeout(r, 400));
        await shot(p, '12b-admin-customer-drawer.png');
        await p.evaluate(() => window.closeCustomerDrawer?.());
      }
    }
    await p.close();
  }

  // Portal
  {
    const p = await pageFor('portal');
    await safeGoto(p, 'http://127.0.0.1:3000/portal/', 'portal');
    await shot(p, '16-portal-login.png');
    const toggle = await p.$('#auth-toggle');
    if (toggle) {
      await toggle.click();
      await new Promise((r) => setTimeout(r, 200));
    }
    const email = `walk+${Date.now()}@example.com`;
    const nameEl = await p.$('#auth-name');
    if (nameEl) await nameEl.type('Walkthrough User');
    await p.type('#auth-email', email);
    await p.type('#auth-password', 'Walkthrough1!');
    await p.click('#auth-submit');
    await new Promise((r) => setTimeout(r, 1500));
    await shot(p, '17-portal-dashboard.png');
    const invoices = await p.$('nav button[data-tab="invoices"]');
    if (invoices) {
      await invoices.click();
      await new Promise((r) => setTimeout(r, 400));
      await shot(p, '18-portal-invoices-empty.png');
    }
    const stmt = await p.$('nav button[data-tab="statement"]');
    if (stmt) {
      await stmt.click();
      await new Promise((r) => setTimeout(r, 400));
      await shot(p, '19-portal-statement.png');
    }
    const docs = await p.$('nav button[data-tab="docs"]');
    if (docs) {
      await docs.click();
      await new Promise((r) => setTimeout(r, 400));
      await shot(p, '20-portal-api-pricing.png');
    }
    await p.close();
  }

  // Swagger (stock)
  {
    const p = await pageFor('swagger');
    await safeGoto(p, 'http://127.0.0.1:3000/docs', 'swagger');
    await new Promise((r) => setTimeout(r, 800));
    await shot(p, '21-swagger-stock.png');
    await p.close();
  }

  // Catalog (local if served, else public)
  {
    const p = await pageFor('catalog');
    const local = 'http://127.0.0.1:8765/';
    try {
      const r = await fetch(local, { signal: AbortSignal.timeout(1500) });
      await safeGoto(p, r.ok ? local : 'https://zapier.georgelambert.org/', 'catalog');
    } catch {
      await safeGoto(p, 'https://zapier.georgelambert.org/', 'catalog');
    }
    await new Promise((r) => setTimeout(r, 800));
    await shot(p, '22-catalog.png');
    await p.close();
  }
} finally {
  await browser.close();
}

const real = errors.filter((e) => !/favicon|Failed to load resource.*404/.test(e.text));
fs.writeFileSync(LOG, JSON.stringify({ capturedAt: new Date().toISOString(), errors: real, all: errors }, null, 2));
console.log(JSON.stringify({ shots: fs.readdirSync(SHOTS).length, errors: real.length }, null, 2));
if (real.length) {
  for (const e of real) console.log(`ERR ${e.page} ${e.type}: ${e.text}`);
}