/**
 * Adds a macOS-style traffic-light title bar to the top of the page content.
 * Most pages render inside #wpbody-content (native WP pages and all of
 * Aurora's own Vue pages, since each mounts its root div there). The
 * Dashboard is the one exception — DashboardTakeover.php renders it into a
 * separate #aurora-admin-dashboard-root sibling, above #wpbody (which it
 * hides), to fully replace the native dashboard, so it gets wrapped in its
 * own frame to match the card treatment #wpbody-content already has. The
 * block editor bypasses both (see SiteShell.vue isBlockEditor), so it's
 * skipped there.
 *
 * Red closes (navigates back to the Aurora dashboard). Yellow minimizes —
 * on any page other than the dashboard, that means "save where I am and
 * send me home", with SiteShell.vue's taskbar offering a way back; on the
 * dashboard itself (already home) it just collapses in place instead,
 * since there's nowhere further back to send it. Green hides Aurora's own
 * sidebar/toolbar so the content fills the browser window. All of this is
 * just classes on <html> plus one sessionStorage entry (taskbar.js) — no
 * server-side state.
 */
import { setMinimizedWindow, currentPageTitle } from './taskbar.js';

export function initWindowChrome(adminUrl) {
  if (document.querySelector('.aurora-winbar')) {
    return;
  }

  const bar = document.createElement('div');
  bar.className = 'aurora-winbar';

  const makeDot = (variant, label, onClick) => {
    const dot = document.createElement('button');
    dot.type = 'button';
    dot.className = 'aurora-winbar__dot aurora-winbar__dot--' + variant;
    dot.setAttribute('aria-label', label);
    dot.title = label;
    dot.addEventListener('click', onClick);
    return dot;
  };

  const root = document.documentElement;
  const dashboardRoot = document.getElementById('aurora-admin-dashboard-root');
  const isDashboard = !!dashboardRoot;

  bar.appendChild(
    makeDot('close', 'Close', () => {
      window.location.href = adminUrl || '/wp-admin/';
    })
  );
  bar.appendChild(
    makeDot('minimize', 'Minimize', () => {
      if (isDashboard) {
        root.classList.toggle('aurora-minimized');
        root.classList.remove('aurora-maximized');
      } else {
        setMinimizedWindow(currentPageTitle(), window.location.href);
        window.location.href = adminUrl || '/wp-admin/';
      }
    })
  );
  bar.appendChild(
    makeDot('maximize', 'Maximize', () => {
      root.classList.toggle('aurora-maximized');
      root.classList.remove('aurora-minimized');
    })
  );

  if (dashboardRoot) {
    const frame = document.createElement('div');
    frame.className = 'aurora-dashboard-frame';
    dashboardRoot.parentNode.insertBefore(frame, dashboardRoot);
    frame.appendChild(bar);
    frame.appendChild(dashboardRoot);
    return;
  }

  const wpbodyContent = document.getElementById('wpbody-content');
  if (wpbodyContent) {
    wpbodyContent.insertBefore(bar, wpbodyContent.firstChild);
  }
}