---
import config from 'virtual:starlight/user-config';

import LanguageSelect from 'virtual:starlight/components/LanguageSelect';
import Search from 'virtual:starlight/components/Search';
import SiteTitle from 'virtual:starlight/components/SiteTitle';
import SocialIcons from 'virtual:starlight/components/SocialIcons';
import ThemeSelect from 'virtual:starlight/components/ThemeSelect';

const shouldRenderSearch =
  config.pagefind || config.components.Search !== '@astrojs/starlight/components/Search.astro';

const pathname = Astro.url.pathname;
const isDocs = pathname === '/docs/' || pathname.startsWith('/docs/');
const isPreview = pathname === '/docs/preview/' || pathname.startsWith('/docs/preview/');
const stableHref = isPreview ? pathname.replace(/^\/docs\/preview\/?/, '/docs/') : pathname;
const previewHref = isPreview
  ? pathname
  : pathname === '/docs/'
    ? '/docs/preview/'
    : pathname.replace(/^\/docs\/?/, '/docs/preview/');
---

<div class="header">
  <div class="title-wrapper sl-flex">
    <SiteTitle />
  </div>
  <div class="sl-flex print:hidden search-wrapper">
    {isDocs && (
      <nav class="docs-channel-switcher" aria-label="Documentation channel">
        <a href={stableHref} aria-current={!isPreview ? 'page' : undefined}>Stable</a>
        <a href={previewHref} aria-current={isPreview ? 'page' : undefined}>Preview</a>
      </nav>
    )}
    {shouldRenderSearch && <Search />}
  </div>
  <div class="sl-hidden md:sl-flex print:hidden right-group">
    <div class="sl-flex social-icons">
      <SocialIcons />
    </div>
    <ThemeSelect />
    <LanguageSelect />
  </div>
</div>

<style>
  @layer starlight.core {
    .header {
      display: flex;
      gap: var(--sl-nav-gap);
      justify-content: space-between;
      align-items: center;
      height: 100%;
    }

    .title-wrapper {
      overflow: clip;
      padding: 0.25rem;
      margin: -0.25rem;
      min-width: 0;
    }

    .search-wrapper {
      align-items: center;
      gap: 0.75rem;
      min-width: 0;
    }

    .docs-channel-switcher {
      display: flex;
      align-items: center;
      border: 1px solid var(--sl-color-hairline);
      border-radius: 4px;
      overflow: hidden;
      background: var(--sl-color-bg-nav);
      font-size: var(--sl-text-xs);
      font-weight: 700;
      line-height: 1;
      white-space: nowrap;
    }

    .docs-channel-switcher a {
      color: var(--sl-color-gray-2);
      text-decoration: none;
      padding: 0.45rem 0.6rem;
    }

    .docs-channel-switcher a + a {
      border-inline-start: 1px solid var(--sl-color-hairline);
    }

    .docs-channel-switcher a[aria-current="page"] {
      color: var(--sl-color-accent-high);
      background: color-mix(in srgb, var(--sl-color-accent) 14%, transparent);
    }

    .docs-channel-switcher a:hover {
      color: var(--sl-color-accent-high);
    }

    .right-group,
    .social-icons {
      gap: 1rem;
      align-items: center;
    }

    .social-icons::after {
      content: "";
      height: 2rem;
      border-inline-end: 1px solid var(--sl-color-gray-5);
    }

    @media (max-width: 38rem) {
      .docs-channel-switcher {
        display: none;
      }
    }

    @media (min-width: 50rem) {
      :global(:root[data-has-sidebar]) {
        --__sidebar-pad: calc(2 * var(--sl-nav-pad-x));
      }

      :global(:root:not([data-has-toc])) {
        --__toc-width: 0rem;
      }

      .header {
        --__sidebar-width: max(0rem, var(--sl-content-inline-start, 0rem) - var(--sl-nav-pad-x));
        --__main-column-fr: calc(
          (
              100% + var(--__sidebar-pad, 0rem) - var(--__toc-width, var(--sl-sidebar-width)) -
                (2 * var(--__toc-width, var(--sl-nav-pad-x))) - var(--sl-content-inline-start, 0rem) -
                var(--sl-content-width)
            ) / 2
        );
        display: grid;
        grid-template-columns:
          minmax(
            calc(var(--__sidebar-width) + max(0rem, var(--__main-column-fr) - var(--sl-nav-gap))),
            auto
          )
          1fr
          auto;
        align-content: center;
      }
    }
  }
</style>