<script lang="ts">
  import { onMount } from 'svelte';
  import { page } from '$app/stores';
  import { goto, afterNavigate } from '$app/navigation';
  import { profileStore } from '$lib/client/profile.svelte';
  import ProfileSwitcher from '$lib/components/ProfileSwitcher.svelte';
  import ConfirmDialog from '$lib/components/ConfirmDialog.svelte';
  import SearchLoader from '$lib/components/SearchLoader.svelte';
  import type { SearchHit } from '$lib/server/recipes/search-local';
  import type { WebHit } from '$lib/server/search/searxng';

  let { children } = $props();

  let navQuery = $state('');
  let navHits = $state<SearchHit[]>([]);
  let navWebHits = $state<WebHit[]>([]);
  let navSearching = $state(false);
  let navWebSearching = $state(false);
  let navWebError = $state<string | null>(null);
  let navOpen = $state(false);
  let navContainer: HTMLElement | undefined = $state();
  let debounceTimer: ReturnType<typeof setTimeout> | null = null;

  const showHeaderSearch = $derived(
    $page.url.pathname.startsWith('/recipes/') || $page.url.pathname === '/preview'
  );

  $effect(() => {
    const q = navQuery.trim();
    if (debounceTimer) clearTimeout(debounceTimer);
    if (q.length <= 3) {
      navHits = [];
      navWebHits = [];
      navSearching = false;
      navWebSearching = false;
      navWebError = null;
      navOpen = false;
      return;
    }
    navSearching = true;
    navWebHits = [];
    navWebSearching = false;
    navWebError = null;
    navOpen = true;
    debounceTimer = setTimeout(async () => {
      try {
        const res = await fetch(`/api/recipes/search?q=${encodeURIComponent(q)}`);
        const body = await res.json();
        if (navQuery.trim() !== q) return;
        navHits = body.hits;
        if (body.hits.length === 0) {
          navWebSearching = true;
          try {
            const wres = await fetch(`/api/recipes/search/web?q=${encodeURIComponent(q)}`);
            if (navQuery.trim() !== q) return;
            if (!wres.ok) {
              const err = await wres.json().catch(() => ({}));
              navWebError = err.message ?? `HTTP ${wres.status}`;
            } else {
              const wbody = await wres.json();
              navWebHits = wbody.hits;
            }
          } finally {
            if (navQuery.trim() === q) navWebSearching = false;
          }
        }
      } finally {
        if (navQuery.trim() === q) navSearching = false;
      }
    }, 300);
  });

  function submitNav(e: SubmitEvent) {
    e.preventDefault();
    const q = navQuery.trim();
    if (!q) return;
    navOpen = false;
    void goto(`/search?q=${encodeURIComponent(q)}`);
  }

  function handleClickOutside(e: MouseEvent) {
    if (navContainer && !navContainer.contains(e.target as Node)) {
      navOpen = false;
    }
  }

  function handleKey(e: KeyboardEvent) {
    if (e.key === 'Escape' && navOpen) navOpen = false;
  }

  function pickHit() {
    navOpen = false;
    navQuery = '';
    navHits = [];
    navWebHits = [];
  }

  afterNavigate(() => {
    navQuery = '';
    navHits = [];
    navWebHits = [];
    navOpen = false;
  });

  onMount(() => {
    profileStore.load();
    document.addEventListener('click', handleClickOutside);
    document.addEventListener('keydown', handleKey);
    return () => {
      document.removeEventListener('click', handleClickOutside);
      document.removeEventListener('keydown', handleKey);
    };
  });
</script>

<ConfirmDialog />

<header class="bar">
  <div class="bar-inner">
    <a href="/" class="brand">Kochwas</a>
    {#if showHeaderSearch}
      <div class="nav-search-wrap" bind:this={navContainer}>
        <form class="nav-search" onsubmit={submitNav} role="search">
          <input
            type="search"
            bind:value={navQuery}
            onfocus={() => {
              if (navHits.length > 0 || navQuery.trim().length > 3) navOpen = true;
            }}
            placeholder="Rezept suchen…"
            autocomplete="off"
            inputmode="search"
            aria-label="Suchbegriff"
          />
        </form>
        {#if navOpen}
          <div class="dropdown" role="listbox">
            {#if navSearching && navHits.length === 0}
              <SearchLoader scope="local" size="sm" />
            {:else if navHits.length > 0}
              <ul class="dd-list">
                {#each navHits as r (r.id)}
                  <li>
                    <a
                      href={`/recipes/${r.id}`}
                      class="dd-item"
                      onclick={pickHit}
                      role="option"
                      aria-selected="false"
                    >
                      {#if r.image_path}
                        <img src={`/images/${r.image_path}`} alt="" loading="lazy" />
                      {:else}
                        <div class="dd-placeholder">🥘</div>
                      {/if}
                      <div class="dd-body">
                        <div class="dd-title">{r.title}</div>
                        {#if r.source_domain}
                          <div class="dd-domain">{r.source_domain}</div>
                        {/if}
                      </div>
                    </a>
                  </li>
                {/each}
              </ul>
              <a
                class="dd-web"
                href={`/search/web?q=${encodeURIComponent(navQuery.trim())}`}
                onclick={pickHit}
              >
                🌐 Im Internet weitersuchen
              </a>
            {:else}
              <p class="dd-section">Keine lokalen Rezepte – aus dem Internet:</p>
              {#if navWebSearching}
                <SearchLoader scope="web" size="sm" />
              {:else if navWebError}
                <p class="dd-status dd-error">Internet-Suche zurzeit nicht möglich.</p>
              {:else if navWebHits.length > 0}
                <ul class="dd-list">
                  {#each navWebHits as w (w.url)}
                    <li>
                      <a
                        href={`/preview?url=${encodeURIComponent(w.url)}`}
                        class="dd-item"
                        onclick={pickHit}
                        role="option"
                        aria-selected="false"
                      >
                        {#if w.thumbnail}
                          <img src={w.thumbnail} alt="" loading="lazy" />
                        {:else}
                          <div class="dd-placeholder">🍽️</div>
                        {/if}
                        <div class="dd-body">
                          <div class="dd-title">{w.title}</div>
                          <div class="dd-domain">{w.domain}</div>
                        </div>
                      </a>
                    </li>
                  {/each}
                </ul>
              {:else}
                <p class="dd-status">Auch im Internet nichts gefunden.</p>
              {/if}
            {/if}
          </div>
        {/if}
      </div>
    {/if}
    <div class="bar-right">
      <a href="/wishlist" class="nav-link" aria-label="Wunschliste">🍽️</a>
      <a href="/admin" class="nav-link" aria-label="Einstellungen">⚙️</a>
      <ProfileSwitcher />
    </div>
  </div>
</header>

<main>
  {@render children()}
</main>

<style>
  :global(html, body) {
    margin: 0;
    padding: 0;
    background: #f8faf8;
    color: #1a1a1a;
    font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
    -webkit-font-smoothing: antialiased;
  }
  :global(a) {
    color: #2b6a3d;
  }
  :global(*) {
    box-sizing: border-box;
  }
  .bar {
    position: sticky;
    top: 0;
    z-index: 10;
    background: white;
    border-bottom: 1px solid #e4eae7;
  }
  .bar-inner {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 1rem;
    position: relative;
  }
  .brand {
    font-size: 1.15rem;
    font-weight: 700;
    text-decoration: none;
    color: #2b6a3d;
    flex-shrink: 0;
  }
  .nav-search-wrap {
    position: relative;
    flex: 1;
    min-width: 0;
  }
  .nav-search {
    display: flex;
  }
  .nav-search input {
    width: 100%;
    padding: 0.55rem 0.85rem;
    font-size: 0.95rem;
    border: 1px solid #cfd9d1;
    border-radius: 999px;
    background: #f4f8f5;
    min-height: 40px;
  }
  .nav-search input:focus {
    outline: 2px solid #2b6a3d;
    outline-offset: 1px;
    background: white;
  }
  .dropdown {
    position: absolute;
    top: calc(100% + 0.4rem);
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #e4eae7;
    border-radius: 12px;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.18);
    max-height: 70vh;
    overflow-y: auto;
    z-index: 50;
  }
  .dd-list {
    list-style: none;
    padding: 0.35rem;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
  }
  .dd-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.45rem 0.55rem;
    text-decoration: none;
    color: #1a1a1a;
    border-radius: 10px;
    min-height: 52px;
  }
  .dd-item:hover {
    background: #f4f8f5;
  }
  .dd-item img,
  .dd-placeholder {
    width: 44px;
    height: 44px;
    object-fit: cover;
    border-radius: 8px;
    background: #eef3ef;
    display: grid;
    place-items: center;
    font-size: 1.3rem;
    flex-shrink: 0;
  }
  .dd-body {
    min-width: 0;
    flex: 1;
  }
  .dd-title {
    font-weight: 600;
    font-size: 0.95rem;
    line-height: 1.25;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  .dd-domain {
    font-size: 0.78rem;
    color: #888;
    margin-top: 0.1rem;
  }
  .dd-status {
    text-align: center;
    color: #888;
    padding: 0.9rem 0.6rem;
    margin: 0;
    font-size: 0.9rem;
  }
  .dd-error {
    color: #c53030;
  }
  .dd-section {
    margin: 0;
    padding: 0.6rem 0.85rem 0.3rem;
    font-size: 0.8rem;
    color: #888;
    border-bottom: 1px solid #f0f3f1;
    text-transform: uppercase;
    letter-spacing: 0.03em;
  }
  .dd-web {
    display: block;
    padding: 0.75rem 0.85rem;
    text-align: center;
    border-top: 1px solid #e4eae7;
    text-decoration: none;
    color: #2b6a3d;
    font-size: 0.95rem;
    background: #fafdfb;
  }
  .dd-web:hover {
    background: #eaf4ed;
  }
  .bar-right {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-shrink: 0;
    margin-left: auto;
  }
  .nav-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    text-decoration: none;
    font-size: 1.15rem;
  }
  .nav-link:hover {
    background: #f4f8f5;
  }
  main {
    padding: 0 1rem 4rem;
    max-width: 760px;
    margin: 0 auto;
  }
  @media (max-width: 520px) {
    .brand {
      font-size: 0;
      width: 1.6rem;
      height: 1.6rem;
      background: #2b6a3d;
      border-radius: 8px;
      position: relative;
    }
    .brand::after {
      content: '🍳';
      font-size: 1rem;
      position: absolute;
      inset: 0;
      display: grid;
      place-items: center;
    }
    .nav-link {
      width: 36px;
      height: 36px;
      font-size: 1.05rem;
    }
    /* Beim Tippen auf engen Screens nach rechts ausdehnen
       und die Action-Icons dahinter verschwinden lassen. */
    .nav-search-wrap:focus-within {
      position: absolute;
      top: 0.6rem;
      bottom: 0.6rem;
      left: calc(1rem + 1.6rem + 0.6rem);
      right: 1rem;
      z-index: 60;
    }
    .nav-search-wrap:focus-within .nav-search input {
      background: white;
    }
  }
</style>
