/**
 * Content script for FCC CORES (apps.fcc.gov/coresWeb/*)
 *
 * Injects a guidance overlay when on the CORES user management pages
 * to help the client add filings@performancewest.net as an authorized user.
 */
(function() {
  'use strict';

  const PW_EMAIL = 'filings@performancewest.net';

  // Only inject on relevant pages
  const url = window.location.href.toLowerCase();
  if (!url.includes('coresweb') && !url.includes('cores')) return;

  // Wait for page to load
  setTimeout(injectGuidance, 2000);

  function injectGuidance() {
    // Look for user management forms or "Add User" buttons
    const addUserBtn = document.querySelector('input[value*="Add"], button:contains("Add User"), a[href*="addUser"]');
    const emailFields = document.querySelectorAll('input[type="text"][name*="email"], input[type="email"]');

    // Inject floating helper banner
    const banner = document.createElement('div');
    banner.id = 'pw-cores-helper';
    banner.innerHTML = `
      <div style="position:fixed;bottom:20px;right:20px;z-index:99999;background:#1e3a5f;color:white;padding:16px 20px;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,0.2);max-width:320px;font-family:-apple-system,sans-serif;">
        <div style="display:flex;justify-content:space-between;align-items:start;">
          <strong style="font-size:13px;">Performance West Helper</strong>
          <button id="pw-close" style="background:none;border:none;color:#94a3b8;cursor:pointer;font-size:18px;line-height:1;">&times;</button>
        </div>
        <p style="font-size:11px;color:#94a3b8;margin:8px 0;">Add this email as an authorized user on your FRN:</p>
        <div style="background:#2d4a73;padding:8px 12px;border-radius:6px;font-family:monospace;font-size:13px;cursor:pointer;user-select:all;" id="pw-email-copy">${PW_EMAIL}</div>
        <p style="font-size:10px;color:#64748b;margin-top:8px;">Click the email to copy. Then paste it into the "Add User" form above.</p>
      </div>
    `;
    document.body.appendChild(banner);

    // Close button
    document.getElementById('pw-close')?.addEventListener('click', () => banner.remove());

    // Copy on click
    document.getElementById('pw-email-copy')?.addEventListener('click', () => {
      navigator.clipboard.writeText(PW_EMAIL).then(() => {
        const el = document.getElementById('pw-email-copy');
        if (el) { el.textContent = 'Copied!'; setTimeout(() => el.textContent = PW_EMAIL, 1500); }
      });
    });

    // Auto-fill email fields if empty
    emailFields.forEach(field => {
      if (!field.value) {
        field.value = PW_EMAIL;
        field.style.backgroundColor = '#eff6ff';
        field.style.borderColor = '#93c5fd';
      }
    });
  }
})();