---
import StarlightSearch from '@astrojs/starlight/components/Search.astro';
import { docsChannel } from '../docs-path';

const channel = docsChannel(Astro.url.pathname);
---

<channel-search data-channel={channel}>
  <StarlightSearch />
</channel-search>

<script>
  class ChannelSearch extends HTMLElement {
    observer?: MutationObserver;

    connectedCallback() {
      const channel = this.dataset.channel;
      if (!channel) return;

      const selectChannel = () => {
        const checkbox = this.querySelector<HTMLInputElement>(
          `.pagefind-ui__filter-checkbox[name="channel"][value="${channel}"]`,
        );
        if (!checkbox) return false;
        if (!checkbox.checked) checkbox.click();
        this.observer?.disconnect();
        return true;
      };

      if (selectChannel()) return;
      // Starlight does not expose its PagefindUI instance, so wait for Pagefind's filter control.
      this.observer = new MutationObserver(selectChannel);
      this.observer.observe(this, { childList: true, subtree: true });
    }

    disconnectedCallback() {
      this.observer?.disconnect();
    }
  }

  customElements.define('channel-search', ChannelSearch);
</script>

<style>
  channel-search {
    display: contents;
  }

  channel-search :global(.pagefind-ui__filter-panel) {
    display: none;
  }
</style>