---
// Docs search: a native Tabler input that opens the DocSearch modal.
// Lives in the sidebar, above the menu.
import Icon from '@ui/Icon.astro'
---

<!-- BEGIN DOCS SEARCH -->
<div class="input-icon docs-search">
  <span class="input-icon-addon">
    <Icon name="search" />
  </span>
  <input type="search" id="docs-search-input" class="form-control cursor-pointer" placeholder="Search…" aria-label="Search documentation" autocomplete="off" readonly />
  <span class="input-icon-addon">
    <span id="docs-search-kbd" class="fs-4">⌘K</span>
  </span>
</div>
<div id="docsearch" class="d-none"></div>
<!-- END DOCS SEARCH -->

<script>
  // Lazy DocSearch: the native input above triggers a dynamic import of
  // @docsearch/js, which Vite splits into its own hashed chunk — nothing is
  // downloaded until the first interaction. DocSearch mounts into the hidden
  // #docsearch container; opening the modal means clicking its hidden button.
  import { DOCSEARCH_APP_ID, DOCSEARCH_INDEX_NAME, DOCSEARCH_API_KEY } from 'astro:env/client'

  const input = document.getElementById('docs-search-input')
  const mount = document.getElementById('docsearch')
  // Local consts so TypeScript narrows `string | undefined` inside the closures below.
  const appId = DOCSEARCH_APP_ID
  const indexName = DOCSEARCH_INDEX_NAME
  const apiKey = DOCSEARCH_API_KEY

  if (input && !(appId && indexName && apiKey)) {
    // No Algolia env config (see .env.example) — hide the dead search input.
    input.closest<HTMLElement>('.input-icon')?.classList.add('d-none')
    console.warn('Docs search disabled: DOCSEARCH_* env variables are not set.')
  }

  if (input && mount && appId && indexName && apiKey) {
    const isMac = /Mac|iPhone|iPad|iPod/.test(navigator.userAgent)
    const kbd = document.getElementById('docs-search-kbd')
    if (kbd && !isMac) kbd.textContent = 'Ctrl K'

    let state: 'idle' | 'loading' | 'ready' = 'idle'
    let openWhenReady = false

    const openModal = () => mount.querySelector<HTMLElement>('.DocSearch-Button')?.click()

    const load = async (open: boolean) => {
      openWhenReady = openWhenReady || open
      if (state === 'ready') {
        if (open) openModal()
        return
      }
      if (state === 'loading') return
      state = 'loading'
      try {
        // The package root is the Ask AI build in v5; /docsearch is plain keyword search.
        const { default: docsearch } = await import('@docsearch/js/docsearch')
        docsearch({
          container: '#docsearch',
          appId,
          // DocSearch 5 takes a list of indices instead of a single indexName.
          indices: [indexName],
          apiKey,
        })
        state = 'ready'
        // The bundle renders its (hidden) button and binds its own shortcuts.
        if (openWhenReady) openModal()
      } catch {
        state = 'idle'
      }
    }

    input.addEventListener('click', () => {
      load(true)
      input.blur()
    })
    // Keyboard users: prefetch on focus, open on Enter or when they start typing.
    input.addEventListener('focus', () => load(false))
    input.addEventListener('keydown', (event) => {
      if (event.key === 'Enter' || event.key.length === 1) {
        event.preventDefault()
        load(true)
        input.blur()
      }
    })
    input.addEventListener('pointerenter', () => load(false))
    document.addEventListener('keydown', (event) => {
      if ((event.metaKey || event.ctrlKey) && event.key.toLowerCase() === 'k' && state !== 'ready') {
        event.preventDefault()
        load(true)
      }
    })
  }
</script>