#!/usr/bin/env node
/* Reproduce double-refresh on tab change: count document loads per navigation. */
const { chromium } = require('playwright');
const fs = require('fs');
const { execSync } = require('child_process');

const JWT_SECRET = execSync(
  "grep -oP 'POS_JWT_SECRET=\\K.*' /etc/systemd/system/nexus-pos.service | head -1"
).toString().trim();

// Sign a token identical to auth_bp.login (HS256, 10 min)
function makeToken() {
  const header = { alg: 'HS256', typ: 'JWT' };
  const now = Math.floor(Date.now() / 1000);
  const payload = {
    tenant_id: 45, employee_id: 1, name: 'Test Owner', role: 'owner',
    branch_id: 1, max_discount_pct: 100,
    permissions: ['pos.sell', 'pos.view', 'pos.remission', 'catalog.view',
      'inventory.view', 'inventory.create', 'customers.view', 'customers.create',
      'invoicing.view', 'reports.view', 'config.view', 'config.edit',
      'workshop.view', 'dashboard.view'],
    device_id: 'pw-test', type: 'pos_access', exp: now + 600, iat: now,
  };
  const b64 = (o) => Buffer.from(JSON.stringify(o)).toString('base64url');
  const crypto = require('crypto');
  const sig = crypto.createHmac('sha256', JWT_SECRET)
    .update(b64(header) + '.' + b64(payload)).digest('base64url');
  return b64(header) + '.' + b64(payload) + '.' + sig;
}

(async () => {
  const browser = await chromium.launch();
  const ctx = await browser.newContext();
  const page = await ctx.newPage();

  let docLoads = [];
  page.on('framenavigated', (f) => {
    if (f === page.mainFrame()) {
      docLoads.push(f.url());
    }
  });
  page.on('console', (m) => {
    const t = m.text();
    if (/reload|SW_UPDATED|AppInit/i.test(t)) console.log('[console]', t);
  });

  await page.addInitScript((token) => {
    localStorage.setItem('pos_token', token);
    localStorage.setItem('pos_employee', JSON.stringify({ id: 1, name: 'Test Owner', role: 'owner' }));
    localStorage.setItem('pos_tenant_id', '45');
    document.cookie = 'pos_role=owner; path=/pos; SameSite=Lax';
  }, makeToken());

  // 1. Load dashboard
  docLoads = [];
  await page.goto('http://localhost:5001/pos/dashboard', { waitUntil: 'load' });
  await page.waitForTimeout(2500);
  console.log('LOAD /pos/dashboard → cargas de documento:', docLoads.length, docLoads);

  // 2. Click sidebar link to Inventory (change tab)
  docLoads = [];
  const link = page.locator('a.nav-item[href="/pos/inventory"]').first();
  await link.click({ timeout: 5000 }).catch((e) => console.log('click err:', e.message));
  await page.waitForTimeout(3000);
  console.log('CLICK a /pos/inventory → cargas de documento:', docLoads.length, docLoads);
  console.log('URL final:', page.url());

  await browser.close();
})();