(function () {
  'use strict';

  // --- Config ---
  const DEBOUNCE_MS = 300;
  const MIN_CHARS = 2;
  const PAGE_SIZE = 50;
  const LEAFLET_CSS = 'https://unpkg.com/leaflet@1.9.4/dist/leaflet.css';
  const LEAFLET_JS = 'https://unpkg.com/leaflet@1.9.4/dist/leaflet.js';
  const LEAFLET_HEAT_JS = 'https://unpkg.com/leaflet.heat@0.2.0/dist/leaflet-heat.js';

  // --- State ---
  let panel = null;
  let debounceTimer = null;
  let abortCtrl = null;
  let currentQuery = '';
  let currentItems = [];
  let currentView = 'grid'; // 'grid' or 'map'
  let mapInstance = null;
  let mapMarkers = null;
  let heatLayer = null;
  let leafletReady = false;
  let leafletLoading = false;
  let hookedInputs = new WeakSet();

  // --- Auth ---
  function getAuthHeaders() {
    const headers = { 'Content-Type': 'application/json' };
    try {
      const raw = localStorage.getItem('auth') ||
                  localStorage.getItem('immich-auth') ||
                  sessionStorage.getItem('auth');
      if (raw) {
        const parsed = JSON.parse(raw);
        const token = parsed.accessToken || parsed.token || parsed.userToken;
        if (token) headers['Authorization'] = 'Bearer ' + token;
      }
    } catch {}
    return headers;
  }

  // --- Leaflet lazy loader ---
  function loadLeaflet() {
    if (leafletReady) return Promise.resolve();
    if (leafletLoading) {
      return new Promise(resolve => {
        const check = setInterval(() => { if (leafletReady) { clearInterval(check); resolve(); } }, 100);
      });
    }
    leafletLoading = true;

    return new Promise((resolve, reject) => {
      // Load CSS
      const link = document.createElement('link');
      link.rel = 'stylesheet';
      link.href = LEAFLET_CSS;
      document.head.appendChild(link);

      // Load JS
      const script = document.createElement('script');
      script.src = LEAFLET_JS;
      script.onload = () => {
        // Load heat plugin after Leaflet
        const heat = document.createElement('script');
        heat.src = LEAFLET_HEAT_JS;
        heat.onload = () => { leafletReady = true; resolve(); };
        heat.onerror = reject;
        document.head.appendChild(heat);
      };
      script.onerror = reject;
      document.head.appendChild(script);
    });
  }

  // --- Create the results panel ---
  function getOrCreatePanel() {
    if (panel) return panel;

    panel = document.createElement('div');
    panel.id = 'live-search-panel';
    panel.innerHTML = `
      <div class="ls-header">
        <div class="ls-status"></div>
        <div class="ls-controls">
          <button class="ls-toggle" data-view="grid" title="Grid view">
            <svg width="18" height="18" viewBox="0 0 24 24" fill="currentColor"><rect x="3" y="3" width="7" height="7" rx="1"/><rect x="14" y="3" width="7" height="7" rx="1"/><rect x="3" y="14" width="7" height="7" rx="1"/><rect x="14" y="14" width="7" height="7" rx="1"/></svg>
          </button>
          <button class="ls-toggle" data-view="map" title="Map view">
            <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 21c-4-4-8-7.5-8-11a8 8 0 1 1 16 0c0 3.5-4 7-8 11z"/><circle cx="12" cy="10" r="3"/></svg>
          </button>
          <button class="ls-close" title="Close">&times;</button>
        </div>
      </div>
      <div class="ls-body">
        <div class="ls-grid"></div>
        <div class="ls-map-wrap" style="display:none"><div class="ls-map" id="ls-map"></div></div>
      </div>
    `;
    document.body.appendChild(panel);

    const style = document.createElement('style');
    style.textContent = `
      #live-search-panel {
        position: fixed; top: 0; left: 0; right: 0; bottom: 0;
        z-index: 99999; background: rgba(0,0,0,0.88);
        backdrop-filter: blur(6px);
        display: none; flex-direction: column;
      }
      #live-search-panel.active { display: flex; }

      #live-search-panel .ls-header {
        display: flex; justify-content: space-between; align-items: center;
        padding: 72px 20px 8px; flex-shrink: 0;
        max-width: 1440px; width: 100%; margin: 0 auto;
      }
      #live-search-panel .ls-status {
        color: #aaa; font-size: 14px; min-height: 20px;
      }
      #live-search-panel .ls-controls { display: flex; gap: 6px; align-items: center; }
      #live-search-panel .ls-toggle, #live-search-panel .ls-close {
        background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2);
        color: #ccc; border-radius: 6px; padding: 6px 10px; cursor: pointer;
        display: flex; align-items: center; justify-content: center;
        transition: background 0.15s;
      }
      #live-search-panel .ls-toggle:hover, #live-search-panel .ls-close:hover {
        background: rgba(255,255,255,0.2);
      }
      #live-search-panel .ls-toggle.active {
        background: #e94560; border-color: #e94560; color: #fff;
      }
      #live-search-panel .ls-close { font-size: 20px; padding: 4px 10px; }

      #live-search-panel .ls-body {
        flex: 1; overflow-y: auto; padding: 0 20px 20px;
        max-width: 1440px; width: 100%; margin: 0 auto;
      }

      #live-search-panel .ls-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 6px;
      }
      #live-search-panel .ls-card {
        position: relative; aspect-ratio: 1; border-radius: 6px;
        overflow: hidden; cursor: pointer; background: #222;
        transition: transform 0.12s;
      }
      #live-search-panel .ls-card:hover { transform: scale(1.04); z-index: 2; }
      #live-search-panel .ls-card img {
        width: 100%; height: 100%; object-fit: cover;
        opacity: 0; transition: opacity 0.25s;
      }
      #live-search-panel .ls-card img.loaded { opacity: 1; }
      #live-search-panel .ls-card .ls-badge {
        position: absolute; top: 6px; right: 6px;
        background: rgba(0,0,0,0.7); color: #fff; font-size: 10px;
        padding: 2px 5px; border-radius: 3px;
      }

      #live-search-panel .ls-map-wrap {
        height: 100%; min-height: 500px; border-radius: 8px; overflow: hidden;
      }
      #live-search-panel .ls-map { height: 100%; width: 100%; }
      #live-search-panel .ls-map-wrap .ls-map-loading {
        display: flex; align-items: center; justify-content: center;
        height: 100%; color: #aaa; font-size: 15px;
      }

      /* Map popup thumbnail grid */
      .ls-popup-grid {
        display: grid; grid-template-columns: repeat(3, 60px); gap: 3px;
        max-height: 200px; overflow-y: auto;
      }
      .ls-popup-grid img {
        width: 60px; height: 60px; object-fit: cover; border-radius: 3px;
        cursor: pointer;
      }
      .ls-popup-grid img:hover { opacity: 0.8; }
      .ls-popup-title {
        font-weight: 600; margin-bottom: 6px; font-size: 13px;
      }

      #live-search-panel .ls-spinner {
        display: inline-block; width: 14px; height: 14px;
        border: 2px solid #666; border-top-color: #e94560;
        border-radius: 50%; animation: lsSpin 0.5s linear infinite;
        vertical-align: middle; margin-right: 6px;
      }
      @keyframes lsSpin { to { transform: rotate(360deg); } }

      @media (max-width: 600px) {
        #live-search-panel .ls-grid {
          grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        }
        #live-search-panel .ls-header { padding: 64px 10px 8px; }
        #live-search-panel .ls-body { padding: 0 10px 10px; }
      }
    `;
    document.head.appendChild(style);

    // Event listeners
    panel.querySelector('.ls-close').addEventListener('click', hidePanel);
    panel.querySelectorAll('.ls-toggle').forEach(btn => {
      btn.addEventListener('click', () => switchView(btn.dataset.view));
    });
    panel.addEventListener('click', (e) => {
      if (e.target === panel) hidePanel();
    });

    updateToggleButtons();
    return panel;
  }

  function showPanel() {
    getOrCreatePanel().classList.add('active');
  }

  function hidePanel() {
    if (panel) {
      panel.classList.remove('active');
      panel.querySelector('.ls-grid').innerHTML = '';
      panel.querySelector('.ls-status').textContent = '';
    }
    currentQuery = '';
    currentItems = [];
  }

  function switchView(view) {
    currentView = view;
    updateToggleButtons();

    const gridEl = panel.querySelector('.ls-grid');
    const mapWrap = panel.querySelector('.ls-map-wrap');
    const bodyEl = panel.querySelector('.ls-body');

    if (view === 'grid') {
      gridEl.style.display = '';
      mapWrap.style.display = 'none';
      bodyEl.style.overflowY = 'auto';
      renderGridItems(currentItems);
    } else {
      gridEl.style.display = 'none';
      mapWrap.style.display = '';
      bodyEl.style.overflowY = 'hidden';
      showMap(currentItems);
    }
  }

  function updateToggleButtons() {
    if (!panel) return;
    panel.querySelectorAll('.ls-toggle').forEach(btn => {
      btn.classList.toggle('active', btn.dataset.view === currentView);
    });
  }

  // --- Search ---
  async function doSearch(query) {
    if (abortCtrl) abortCtrl.abort();
    abortCtrl = new AbortController();
    currentQuery = query;

    const statusEl = getOrCreatePanel().querySelector('.ls-status');
    const gridEl = getOrCreatePanel().querySelector('.ls-grid');
    gridEl.innerHTML = '';

    statusEl.innerHTML = '<span class="ls-spinner"></span> Searching...';
    showPanel();

    try {
      const headers = getAuthHeaders();

      // Run CLIP smart search and metadata location search in parallel
      const [smartResp, metaResp] = await Promise.all([
        fetch('/api/search/smart', {
          method: 'POST', headers, credentials: 'include',
          body: JSON.stringify({ query, size: PAGE_SIZE }),
          signal: abortCtrl.signal
        }),
        fetch('/api/search/metadata', {
          method: 'POST', headers, credentials: 'include',
          body: JSON.stringify({ query, size: PAGE_SIZE, withExif: true }),
          signal: abortCtrl.signal
        }).catch(() => null) // metadata search is optional
      ]);

      if (!smartResp.ok) {
        statusEl.textContent = 'Search error (' + smartResp.status + ')';
        return;
      }

      const smartData = await smartResp.json();
      let items = smartData.assets?.items || [];

      // Merge metadata results (prioritize unique assets with GPS)
      if (metaResp && metaResp.ok) {
        const metaData = await metaResp.json();
        const metaItems = metaData.assets?.items || [];
        const seenIds = new Set(items.map(i => i.id));
        for (const mi of metaItems) {
          if (!seenIds.has(mi.id)) {
            items.push(mi);
            seenIds.add(mi.id);
          }
        }
      }

      currentItems = items;

      if (items.length === 0) {
        statusEl.textContent = 'No results for "' + query + '"';
        return;
      }

      // Count items with GPS for status
      const withGps = items.filter(i => i.exifInfo?.latitude).length;
      let statusText = items.length + ' result' + (items.length !== 1 ? 's' : '');
      if (withGps > 0) statusText += ' (' + withGps + ' with location)';
      statusEl.textContent = statusText;

      if (currentView === 'grid') {
        renderGridItems(items);
      } else {
        showMap(items);
      }

      // Background: enrich smart search results with GPS data
      enrichWithGps(items);

    } catch (e) {
      if (e.name !== 'AbortError') {
        statusEl.textContent = 'Search failed';
        console.error('[live-search]', e);
      }
    }
  }

  // Fetch GPS data for items that don't have exifInfo yet
  async function enrichWithGps(items) {
    const needGps = items.filter(i => !i.exifInfo).map(i => i.id);
    if (needGps.length === 0) return;

    try {
      const headers = getAuthHeaders();
      const resp = await fetch('/api/custom/batch-exif', {
        method: 'POST', headers, credentials: 'include',
        body: JSON.stringify({ ids: needGps })
      });

      if (!resp.ok) return;
      const gpsData = await resp.json();

      // Merge GPS data back into items
      const gpsMap = new Map(gpsData.map(g => [g.id, g]));
      let updated = false;
      for (const item of items) {
        if (!item.exifInfo && gpsMap.has(item.id)) {
          const g = gpsMap.get(item.id);
          item.exifInfo = {
            latitude: g.latitude, longitude: g.longitude,
            city: g.city, state: g.state, country: g.country
          };
          if (g.latitude) updated = true;
        }
      }

      if (updated) {
        // Update status with new GPS count
        const withGps = items.filter(i => i.exifInfo?.latitude).length;
        const statusEl = panel.querySelector('.ls-status');
        let statusText = items.length + ' result' + (items.length !== 1 ? 's' : '');
        if (withGps > 0) statusText += ' (' + withGps + ' with location)';
        statusEl.textContent = statusText;

        // If map is showing, refresh it
        if (currentView === 'map') showMap(items);
      }
    } catch (e) {
      console.warn('[live-search] GPS enrichment failed:', e);
    }
  }

  function renderGridItems(items) {
    const grid = panel.querySelector('.ls-grid');
    grid.innerHTML = '';
    for (const item of items) {
      const card = document.createElement('div');
      card.className = 'ls-card';

      const img = document.createElement('img');
      img.loading = 'lazy';
      img.src = '/api/assets/' + item.id + '/thumbnail?size=thumbnail';
      img.alt = item.originalFileName || '';
      img.onload = () => img.classList.add('loaded');
      card.appendChild(img);

      if (item.type === 'VIDEO') {
        const badge = document.createElement('span');
        badge.className = 'ls-badge';
        badge.textContent = 'VIDEO';
        card.appendChild(badge);
      }

      // Show location badge if available
      const city = item.exifInfo?.city;
      if (city) {
        const locBadge = document.createElement('span');
        locBadge.className = 'ls-badge';
        locBadge.style.cssText = 'top:auto;bottom:6px;left:6px;right:auto;max-width:90%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;';
        locBadge.textContent = city;
        card.appendChild(locBadge);
      }

      card.addEventListener('click', () => {
        hidePanel();
        window.location.href = '/photos/' + item.id;
      });

      grid.appendChild(card);
    }
  }

  // --- Map View ---
  async function showMap(items) {
    const mapWrap = panel.querySelector('.ls-map-wrap');
    const mapEl = panel.querySelector('.ls-map');

    // Filter items with GPS
    const geoItems = items.filter(i => i.exifInfo?.latitude && i.exifInfo?.longitude);

    if (geoItems.length === 0) {
      mapEl.innerHTML = '<div class="ls-map-loading">No location data available for these results.<br>Try a location-specific search like a city name.</div>';
      return;
    }

    // Lazy-load Leaflet
    if (!leafletReady) {
      mapEl.innerHTML = '<div class="ls-map-loading"><span class="ls-spinner"></span> Loading map...</div>';
      await loadLeaflet();
    }

    // Clear previous map
    if (mapInstance) {
      mapInstance.remove();
      mapInstance = null;
    }
    mapEl.innerHTML = '';

    // Create map
    const L = window.L;
    mapInstance = L.map(mapEl, { zoomControl: true });

    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
      attribution: '&copy; OpenStreetMap',
      maxZoom: 19
    }).addTo(mapInstance);

    // Group photos by location (cluster nearby within ~100m)
    const clusters = clusterByLocation(geoItems, 0.001);

    // Add markers
    const markers = [];
    for (const cluster of clusters) {
      const lat = cluster.center[0];
      const lng = cluster.center[1];
      const photos = cluster.items;

      const label = photos[0].exifInfo?.city || photos[0].exifInfo?.country || '';
      const count = photos.length;

      const marker = L.circleMarker([lat, lng], {
        radius: Math.min(8 + Math.sqrt(count) * 3, 30),
        fillColor: '#e94560',
        fillOpacity: 0.8,
        color: '#fff',
        weight: 2
      }).addTo(mapInstance);

      // Build popup
      const popupContent = document.createElement('div');
      const title = document.createElement('div');
      title.className = 'ls-popup-title';
      title.textContent = (label ? label + ' — ' : '') + count + ' photo' + (count > 1 ? 's' : '');
      popupContent.appendChild(title);

      const thumbGrid = document.createElement('div');
      thumbGrid.className = 'ls-popup-grid';
      for (const photo of photos.slice(0, 9)) {
        const img = document.createElement('img');
        img.src = '/api/assets/' + photo.id + '/thumbnail?size=thumbnail';
        img.alt = photo.originalFileName || '';
        img.addEventListener('click', () => {
          hidePanel();
          window.location.href = '/photos/' + photo.id;
        });
        thumbGrid.appendChild(img);
      }
      if (count > 9) {
        const more = document.createElement('div');
        more.style.cssText = 'grid-column: 1/-1; text-align:center; font-size:12px; color:#666; padding:4px;';
        more.textContent = '+ ' + (count - 9) + ' more';
        thumbGrid.appendChild(more);
      }
      popupContent.appendChild(thumbGrid);

      marker.bindPopup(popupContent, { maxWidth: 220, minWidth: 200 });

      // Show count label
      if (count > 1) {
        marker.bindTooltip(String(count), {
          permanent: true, direction: 'center',
          className: 'ls-marker-label'
        });
      }

      markers.push(marker);
    }

    // Add heatmap layer
    const heatData = geoItems.map(i => [i.exifInfo.latitude, i.exifInfo.longitude, 0.5]);
    if (heatData.length > 3) {
      heatLayer = L.heatLayer(heatData, {
        radius: 25, blur: 15, maxZoom: 15,
        gradient: { 0: 'blue', 0.25: 'cyan', 0.5: 'lime', 0.75: 'yellow', 1: 'red' }
      }).addTo(mapInstance);
    }

    // Fit bounds
    const bounds = L.latLngBounds(geoItems.map(i => [i.exifInfo.latitude, i.exifInfo.longitude]));
    mapInstance.fitBounds(bounds, { padding: [40, 40], maxZoom: 14 });

    // Fix map sizing (Leaflet needs this after dynamic show)
    setTimeout(() => mapInstance.invalidateSize(), 100);

    // Add custom label style
    if (!document.getElementById('ls-marker-styles')) {
      const s = document.createElement('style');
      s.id = 'ls-marker-styles';
      s.textContent = `
        .ls-marker-label {
          background: rgba(0,0,0,0.7) !important; border: none !important;
          color: #fff !important; font-size: 11px !important; font-weight: 600 !important;
          padding: 2px 5px !important; border-radius: 10px !important;
          box-shadow: none !important;
        }
        .ls-marker-label::before { display: none !important; }
      `;
      document.head.appendChild(s);
    }
  }

  // Cluster nearby photos by GPS proximity
  function clusterByLocation(items, threshold) {
    const clusters = [];
    const used = new Set();

    for (let i = 0; i < items.length; i++) {
      if (used.has(i)) continue;
      const a = items[i];
      const cluster = [a];
      used.add(i);

      for (let j = i + 1; j < items.length; j++) {
        if (used.has(j)) continue;
        const b = items[j];
        if (Math.abs(a.exifInfo.latitude - b.exifInfo.latitude) < threshold &&
            Math.abs(a.exifInfo.longitude - b.exifInfo.longitude) < threshold) {
          cluster.push(b);
          used.add(j);
        }
      }

      const lat = cluster.reduce((s, p) => s + p.exifInfo.latitude, 0) / cluster.length;
      const lng = cluster.reduce((s, p) => s + p.exifInfo.longitude, 0) / cluster.length;
      clusters.push({ center: [lat, lng], items: cluster });
    }

    return clusters;
  }

  // --- Hook into search inputs ---
  function hookInput(input) {
    if (hookedInputs.has(input)) return;
    hookedInputs.add(input);

    input.addEventListener('input', () => {
      clearTimeout(debounceTimer);
      const q = input.value.trim();

      if (q.length < MIN_CHARS) {
        hidePanel();
        return;
      }

      debounceTimer = setTimeout(() => doSearch(q), DEBOUNCE_MS);
    });

    input.addEventListener('keydown', (e) => {
      if (e.key === 'Escape' && panel?.classList.contains('active')) {
        e.stopPropagation();
        hidePanel();
      }
    });
  }

  function isSearchInput(el) {
    if (el.tagName !== 'INPUT') return false;
    if (el.type === 'search') return true;
    const ph = (el.placeholder || '').toLowerCase();
    if (ph.includes('search')) return true;
    if (el.getAttribute('role') === 'searchbox') return true;
    const parent = el.closest('[data-testid*="search"], [class*="search-bar"], [id*="search"]');
    if (parent) return true;
    const aria = (el.getAttribute('aria-label') || '').toLowerCase();
    if (aria.includes('search')) return true;
    return false;
  }

  function scanForSearchInputs(root) {
    const inputs = (root || document).querySelectorAll('input');
    for (const input of inputs) {
      if (isSearchInput(input)) hookInput(input);
    }
  }

  // Initial scan
  scanForSearchInputs();

  // Watch for dynamically added inputs (SPA navigation)
  const observer = new MutationObserver((mutations) => {
    for (const m of mutations) {
      for (const node of m.addedNodes) {
        if (node.nodeType !== 1) continue;
        if (node.tagName === 'INPUT' && isSearchInput(node)) {
          hookInput(node);
        } else if (node.querySelectorAll) {
          scanForSearchInputs(node);
        }
      }
    }
  });
  observer.observe(document.body, { childList: true, subtree: true });

  // Global Escape
  document.addEventListener('keydown', (e) => {
    if (e.key === 'Escape' && panel?.classList.contains('active')) {
      hidePanel();
    }
  });

  console.log('[live-search] Immich live search with map view loaded');
})();