map = {
  const container = html`<div class="map-container" id="map" style="height: 665px; width: 100%;"></div>`;
  yield container;

  <!-- const sourcePlanIGN = { -->
  <!--   style: 'normal', -->
  <!--   format: 'image/png', -->
  <!--   layer: 'GEOGRAPHICALGRIDSYSTEMS.PLANIGNV2' -->
  <!-- }; -->

  const sourceOrtho = {
    style: 'normal',
    format: 'image/jpeg',
    layer: 'HR.ORTHOIMAGERY.ORTHOPHOTOS'
  };
  
  const sourceOSM = {
    tiles: 'https://tile.openstreetmap.org/{z}/{x}/{y}.png',
    attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
    minzoom: 0,
    maxzoom: 19
  };

  const map = new maplibregl.Map({
    container: container,
    style: 'https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json',
    <!-- center: [-0.04, 46.3051],  -->
    zoom: 11
  });

  map.addControl(new maplibregl.FullscreenControl(), 'top-right');
  map.addControl(new maplibregl.NavigationControl({ visualizePitch: true }), 'top-left');
  map.addControl(new maplibregl.ScaleControl({ maxWidth: 80, unit: 'metric' }));
  

  const toggleStyle = (useOrtho) => {
    if (useOrtho) {
      map.setLayoutProperty('orthoIGN', 'visibility', 'visible');
      map.setLayoutProperty('OSM', 'visibility', 'none');
    } else {
      map.setLayoutProperty('orthoIGN', 'visibility', 'none');
      map.setLayoutProperty('OSM', 'visibility', 'visible');
    }
  };

  map.on('load', () => {
    map.fitBounds(
    [
      [-0.04, 46.3051],   // Sud-Ouest
      [0.7741, 46.8565]   // Nord-Est
    ],
    {
      padding: 20,
      linear: true,
      duration: 0
    }
  );
    // Ajout des fonds raster IGN
    <!-- map.addSource('raster-planign', { -->
    <!--   type: 'raster', -->
    <!--   tiles: [ -->
    <!--     `https://data.geopf.fr/wmts?SERVICE=WMTS&style=${sourcePlanIGN.style}&VERSION=1.0.0&REQUEST=GetTile&format=${sourcePlanIGN.format}&layer=${sourcePlanIGN.layer}&tilematrixset=PM&TileMatrix={z}&TileCol={x}&TileRow={y}` -->
    <!--   ], -->
    <!--   tileSize: 256, -->
    <!--   attribution: '© <a href="https://www.ign.fr/">IGN</a>', -->
    <!--   minzoom: 0, -->
    <!--   maxzoom: 22 -->
    <!-- }); -->

    map.addSource('raster-ortho', {
      type: 'raster',
      tiles: [
        `https://data.geopf.fr/wmts?SERVICE=WMTS&style=${sourceOrtho.style}&VERSION=1.0.0&REQUEST=GetTile&format=${sourceOrtho.format}&layer=${sourceOrtho.layer}&tilematrixset=PM&TileMatrix={z}&TileCol={x}&TileRow={y}`
      ],
      tileSize: 256,
      attribution: '© <a href="https://www.ign.fr/">IGN</a>',
      minzoom: 0,
      maxzoom: 22
    });

    map.addSource('raster-osm', {
  type: 'raster',
  tiles: [
    'https://tile.openstreetmap.org/{z}/{x}/{y}.png'
  ],
  tileSize: 256,
  attribution:
    '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
  minzoom: 0,
  maxzoom: 19
    });

    <!-- map.addLayer({ -->
    <!--   id: 'planIGN', -->
    <!--   type: 'raster', -->
    <!--   source: 'raster-planign', -->
    <!--   layout: { visibility: 'visible' } -->
    <!-- }); -->

    map.addLayer({
      id: 'orthoIGN',
      type: 'raster',
      source: 'raster-ortho',
      layout: { visibility: 'none' }
    });

    map.addLayer({
      id: 'OSM',
      type: 'raster',
      source: 'raster-osm',
      layout: { visibility: 'visible' } // tu peux le laisser caché au départ si tu veux le basculer ensuite
    });
              
    
    const layersData = [
      { data: bassin_vienne, type: 'line', id: 'bassinvienneLayer', color: 'green', layout: {visibility:'none'}},
      { data: region, type: 'line', id: 'regionLayer', color: 'red', layout: {visibility:'none'} },
      { data: departement, type: 'line', id: 'departementLayer', color: '#a772b9', width: 2,  layout:{visibility:'none'}},
      { data: epci, type: 'line', id: 'epciLayer', color: '#567ae3', layout: {visibility:'none'} },
      {  data: indicateursGeojson, // GeoJSON contenant une propriété 's31atx'
          type: 'fill',
          id: 'indicateurs25bLayer',
          opacity: 0.9,
          width: 1,
          dynamicColor: { 
            property: 's25b',
            // La logique exacte de la légende à appliquer :
            // - 0 ou null => #d9d9d9
            // - < 150     => #f9f0d9
            // - < 500000  => #fdb77a
            // - < 2000000 => #ec603F
            // - >= 2000000 => #b30000
            mapping: {
              '0': '#d9d9d9',
              '1': '#ffffff',
              '2': '#ff7676'
            },
            default: '#d9d9d9' // utilisé si null, undefined ou < 150
          },
          layout: { visibility: 'visible' }
        },
        { data: cours_d_eau, type: 'line', id: 'coursdeauLayer', color: '#b4c3ef' , width: 2, opacity: 1, 
      layout: {visibility:'visible'} },
      { data: zone_inondable, type: 'fill', id: 'zoneinondableLayer', color: '#b4c3ef' , width: 2, opacity: 1, 
      layout: {visibility:'visible'} },
      { data: batiments, type: 'fill-extrusion', id: 'batimentsLayer', width:2, opacity: 1, colorByType: 'ff_dteloctxt',
        heightProperty: 'hauteur',layout: {visibility:'none'}}
      
    ];
    
    // Créer le conteneur
        const legend = document.createElement('div');
        legend.id = 'legend';
        legend.style.position = 'absolute';
        legend.style.top = '82%';
        legend.style.right = '10px';
        legend.style.transform = 'translateY(-50%)';
        legend.style.background = 'white';
        legend.style.padding = '10px';
        legend.style.fontSize = '12px';
        legend.style.borderRadius = '4px';
        legend.style.boxShadow = '0 1px 4px rgba(0,0,0,0.3)';
        legend.style.zIndex = '1'; // pour passer au-dessus de la carte
        
        // Contenu de la légende
        legend.innerHTML = `
          <strong>Nombre d’installations <br> susceptibles de déverser <br> des produits polluants</strong><br>
          <div><span style="background:#d9d9d9;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> 0</div>
          <div><span style="background:#ffffff;width:12px;height:12px;display:inline-block;margin-right:5px;border:1px solid #ccc;"></span> 1-2 </div>
          <div><span style="background:#ff7676;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> 2-3 </div>`;
        
        // L’ajouter à la carte (le container MapLibre)
        map.getContainer().appendChild(legend);
        
        //afin de lier la légende à l'indicateur
        function updateLegendVisibility() {
        const visibility = map.getLayoutProperty('indicateurs25bLayer', 'visibility');
        if (visibility === 'none') {
          legend.style.display = 'none';
        } else {
          legend.style.display = 'block';
        }
      }

        map.on('idle', updateLegendVisibility);
        
        // Créer le conteneur de légende des bâtiments
        const batimentLegend = document.createElement('div');
        batimentLegend.id = 'batiment-legend';
        batimentLegend.style.position = 'absolute';
        batimentLegend.style.top = '81%';
        batimentLegend.style.left = '10px';
        batimentLegend.style.transform = 'translateY(-50%)';
        batimentLegend.style.background = 'white';
        batimentLegend.style.padding = '10px';
        batimentLegend.style.fontSize = '12px';
        batimentLegend.style.borderRadius = '4px';
        batimentLegend.style.boxShadow = '0 1px 4px rgba(0,0,0,0.3)';
        batimentLegend.style.zIndex = '1';
        
        // Contenu de la légende
        batimentLegend.innerHTML = `
          <strong>Type de bâtiment</strong><br>
          <div><span style="background:#1f77b4;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> Activité</div>
          <div><span style="background:#2ca02c;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> Appartement</div>
          <div><span style="background:#d9d9d9;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> Aucun local</div>
          <div><span style="background:#9467bd;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> Dépendance</div>
          <div><span style="background:#ff7f0e;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> Maison</div>
          <div><span style="background:#e377c2;width:12px;height:12px;display:inline-block;margin-right:5px;"></span> Mixte</div>
        `;
        
        // L’ajouter à la carte
        map.getContainer().appendChild(batimentLegend);
        batimentLegend.style.display = 'none'; // Permet de supprimer l'affichage de la légende au chargement de la page
        
        // Lier la visibilité à la couche bâtiment
        function updateBatimentLegendVisibility() {
          const visibility = map.getLayoutProperty('batimentsLayer', 'visibility');
          //batimentLegend.style.display = (visibility === 'none') ? 'none' : 'block';
          if (visibility === 'none') {
          batimentLegend.style.display = 'none';
        } else {
          batimentLegend.style.display = 'block';
        }
        }
        
        map.on('idle', updateBatimentLegendVisibility);
     
    // Ajout des couches vectorielles
      layersData.forEach(layer => {
        map.addSource(layer.id, {
          type: 'geojson',
          data: layer.data
        });
      
        const layerConfig = {
          id: layer.id,
          type: layer.type,
          source: layer.id,
          paint: {},
          layout: layer.layout
        };
      
        if (layer.type === 'fill') {
          if (layer.dynamicColor) {
            const prop = ['get', layer.dynamicColor.property];
            layerConfig.paint['fill-color'] = [
              'case',
              ['!', ['has', layer.dynamicColor.property]], '#d9d9d9',                       // Propriété absente
              ['any', ['==', ['get', layer.dynamicColor.property], null], ['==', ['get', layer.dynamicColor.property], 0]], '#d9d9d9', // null ou 0
              ['<', ['get', layer.dynamicColor.property], 2], '#ffffff',
              ['>=', ['get', layer.dynamicColor.property], 2], '#ff7676',
              '#d9d9d9' // fallback
            ];
          } else {
            layerConfig.paint['fill-color'] = layer.color || '#000000';
          }
        
          layerConfig.paint['fill-opacity'] = layer.opacity || 0.4;
          layerConfig.paint['fill-outline-color'] = '#000000';
        
        } else if (layer.type === 'line') {
          layerConfig.paint['line-color'] = layer.color || '#000000';
          layerConfig.paint['line-width'] = layer.width || 1;
        } else if (layer.type === 'fill-extrusion') {
          if (layer.colorByType === 'ff_dteloctxt') {
            layerConfig.paint['fill-extrusion-color'] = [
              'match',
              ['get', 'ff_dteloctxt'],
              'ACTIVITE', '#1f77b4',
              'APPARTEMENT', '#2ca02c',
              'AUCUN LOCAL', '#d9d9d9',
              'DEPENDANCE', '#9467bd',
              'MAISON', '#ff7f0e',
              'MIXTE', '#e377c2',
              '#000000' // fallback
            ];
          } else {
            layerConfig.paint['fill-extrusion-color'] = layer.color || '#000000';
          }
        
          layerConfig.paint['fill-extrusion-height'] = ['get', layer.heightProperty || 'hauteur'];
          layerConfig.paint['fill-extrusion-base'] = 0;
          layerConfig.paint['fill-extrusion-opacity'] = layer.opacity || 0.9;
        }

        map.addLayer(layerConfig);
        
         map.addLayer({
                  id: 'indicateurs25bLabels',
                  type: 'symbol',
                  source: 'indicateurs25bLayer', // le même id que ta source GeoJSON
                  layout: {
                    'text-field': ['get', 'nom'],
                    'text-size': 11,
                    'text-font': ['Open Sans Bold', 'Arial Unicode MS Bold'],
                    'text-offset': [0, 0.6],
                    'text-anchor': 'top'
                  },
                  paint: {
                    'text-color': '#000000',
                    'text-halo-color': '#ffffff',
                    'text-halo-width': 1
                  }
                });
                
        map.addLayer({
                 id: 'indicateurs25b-hover',
                 type: 'line',
                 source: 'indicateurs25bLayer', // même source
                 paint: {
                   'line-color': '#000',
                   'line-width': 2
                  },
                 filter: ['==', 'nom', ''] // vide au début
                  });
        
        
      map.on('click', 'indicateurs25bLayer', (e) => {
        const feature = e.features[0];
        const image= feature.properties.image;
        const nom = feature.properties.nom || 'Non disponible';
        
        const population = feature.properties.population
          ? feature.properties.population.toLocaleString('fr-FR') + ' habitants'
          : 'Non disponible';
      
        const s25bValue = parseFloat(feature.properties.s25b);
        const dommages = (Number(s25bValue) || 0).toLocaleString('fr-FR');
        const batimentsValue = feature.properties.nb_batiments;
        const batiments = !isNaN(parseFloat(batimentsValue))
          ? parseInt(batimentsValue).toLocaleString('fr-FR')
          : 'Non disponible';
        const batindif = feature.properties.nb_bat_indif?.toLocaleString('fr-FR');
        const batsportifValue = parseFloat(feature.properties.nb_bat_sportif);
        const batsportif = (!isNaN(batsportifValue) ? batsportifValue : 0).toLocaleString('fr-FR');
        const batagricolefValue = parseFloat(feature.properties.nb_bat_agricole);
        const batagricole = (!isNaN(batagricolefValue) ? batagricolefValue : 0).toLocaleString('fr-FR');
        const batresidentielValue = parseFloat(feature.properties.nb_bat_residentiel);
        const batresidentiel = (!isNaN(batresidentielValue) ? batresidentielValue : 0).toLocaleString('fr-FR');
        const batannexeValue = parseFloat(feature.properties.nb_bat_annexe);
        const batannexe = (!isNaN(batannexeValue) ? batannexeValue : 0).toLocaleString('fr-FR');
        const batreligieuxValue = parseFloat(feature.properties.nb_bat_religieux);
        const batreligieux = (!isNaN(batreligieuxValue) ? batreligieuxValue : 0).toLocaleString('fr-FR');
        const batindustrielValue = parseFloat(feature.properties.nb_bat_industriel);
        const batindustriel = (!isNaN(batindustrielValue) ? batindustrielValue : 0).toLocaleString('fr-FR');
        const batcommercialValue = parseFloat(feature.properties.nb_bat_commercial);
        const batcommercial = (!isNaN(batcommercialValue) ? batcommercialValue : 0).toLocaleString('fr-FR');
      
        const popupContent = `
        <style>
          .maplibregl-popup-content {
            padding: 4px !important;
            border: 1px solid;
            border-radius: 8px;
            width: max-content;
            box-shadow: rgba(101, 147, 220, 0.2) 0px 4px 8px 0px;
            border-color: rgba(101, 147, 220, 0.5);
          }
        </style>
          <div style="font-family: sans-serif; font-size: 13px; margin:10px;">
          <div style="background-color: #69774f; border: 1px solid; border-radius:8px; margin-bottom:16px; padding:10px; color:white;"><strong>
          <center>${nom}</center>
          </strong></div>
            <p style="margin:auto;"><strong>Population :</strong> ${population}</p>
            <p style="margin:auto;"><strong>Nombre d’installations susceptibles <br> de déverser des produits polluants
 :</strong> ${dommages}</p>
          </div>
        `;
      
        new maplibregl.Popup({closeButton: false})
          .setLngLat(e.lngLat)
          .setHTML(popupContent)
          .addTo(map);
          
          // Mettre à jour le conteneur HTML avec les informations spécifiques du marqueur 
         document.getElementById('donnees').innerHTML = `
          <div style="text-align:center; font-family:sans-serif; font-size:16px;">
            <div>
            <img src="${image}" style="width:300px; margin-bottom:10px;padding: 2px; background-color: darkgoldenrod;
                                margin-top: 13px;box-shadow: rgba(149, 31, 81, 0.77) 0px 4px 8px 0px;">
            </div>
            <br>
            
            <strong style="font-size:1.1em;"><i class="bi bi-geo-alt-fill"></i> Commune :</strong> ${nom}<br>
            <strong style="font-size:1.1em;"><i class="bi bi-people-fill"></i> Nombre d'habitants :</strong> ${population}<br>
            <strong style="font-size:1.1em;"><i class="bi bi-house-fill"></i> Nombre de bâtiments :</strong> ${batiments}<br>
            
            <div style="margin-top:10px;"><strong>Dont :</strong></div>
            <ul style="list-style:none; padding:0;">
              <li><h5 style="font-size:1em;">${batindif} <strong>bâtiments indifférenciés</strong></h5></li>
              <li><h5 style="font-size:1em;">${batsportif} <strong>bâtiments sportifs</strong></h5></li>
              <li><h5 style="font-size:1em;">${batagricole} <strong>bâtiments agricoles</strong></h5></li>
              <li><h5 style="font-size:1em;">${batresidentiel} <strong>bâtiments résidentiels</strong></h5></li>
              <li><h5 style="font-size:1em;">${batannexe} <strong>bâtiments annexes</strong></h5></li>
              <li><h5 style="font-size:1em;">${batreligieux} <strong>bâtiments religieux</strong></h5></li>
              <li><h5 style="font-size:1em;">${batindustriel} <strong>bâtiments industriels</strong></h5></li>
              <li><h5 style="font-size:1em;">${batcommercial} <strong>bâtiments commerciaux</strong></h5></li>
            </ul>
        
            <div style="margin-top:10px;">
              <strong style="font-size:1.1em;"><i class="fas fa-oil-can"></i> Nombre d’installations susceptibles de déverser des produits polluants :</strong> ${dommages}
            </div>
          </div>
        `;
      });

      map.on('mousemove', 'indicateurs25bLayer', (e) => {
        if (e.features.length > 0) {
          const nomCommune = e.features[0].properties.nom;
      
          map.setFilter('indicateurs25b-hover', ['==', 'nom', nomCommune]);
      
          map.getCanvas().style.cursor = 'pointer';
        }
      });

        map.on('mouseleave', 'indicateurs25bLayer', () => {
          map.setFilter('indicateurs25b-hover', ['==', 'nom', '']);
          map.getCanvas().style.cursor = '';
        });
      });

    // Interface de contrôle des couches
    const mapLayersDiv = document.createElement('div');
    mapLayersDiv.classList.add('mapLayers');
    mapLayersDiv.style.position = 'absolute';
    mapLayersDiv.style.zIndex = '1000';
    mapLayersDiv.innerHTML = `
      <button id="toggleMapMenuButton" class="btn btn-light aria-label="Afficher les couches" title="Afficher les couches">
        <img src="Images/icons/layers-half.svg" alt="Icône SVG" width="25" height="25">
      </button>
      <div id="layersList" style="display: none; background: white; padding: 10px; border: 1px solid #ccc;"></div>
    `;
    map.getContainer().appendChild(mapLayersDiv);

    const toggleableLayerIds = layersData.map(layer => layer.id);
    const aliasLayerIds = {
      bassinvienneLayer: 'Bassin de la Vienne',
      regionLayer: 'Région',
      departementLayer: 'Département',
      epciLayer: 'Etablissement Public de Coopération Intercommunale',
      coursdeauLayer: "Cours d'eau",
      zoneinondableLayer: 'Zonage Inondable',
      indicateurs25bLayer: "Nombre d’installations susceptibles de déverser des produits polluants",
      batimentsLayer: "Bâtiments"
    };

    function toggleLayerVisibility(id, visible) {
      const visibility = visible ? 'visible' : 'none';
      if (map.getLayer(id)) {
        map.setLayoutProperty(id, 'visibility', visibility);
      }
    }

    const layersListDiv = mapLayersDiv.querySelector('#layersList');
    
    toggleableLayerIds.forEach(id => {
      const name = aliasLayerIds[id] || id;

      const checkbox = document.createElement('input');
      checkbox.type = 'checkbox';
      checkbox.id = id;
      checkbox.className = 'form-check-input';
      
      // ✅ Lire la visibilité actuelle directement dans la carte
      map.once('idle', () => {
        const visibility = map.getLayoutProperty(id, 'visibility');
        checkbox.checked = visibility === 'visible';
      });
  
      checkbox.addEventListener('change', () => toggleLayerVisibility(id, checkbox.checked));

      const label = document.createElement('label');
      label.htmlFor = id;
      label.className = 'form-check-label';
      label.innerText = name;

      const wrapper = document.createElement('div');
      wrapper.className = 'form-check';
      wrapper.appendChild(checkbox);
      wrapper.appendChild(label);

      layersListDiv.appendChild(wrapper);
    });

    document.getElementById('toggleMapMenuButton').addEventListener('click', () => {
      layersListDiv.style.display = layersListDiv.style.display === 'none' ? 'block' : 'none';
    });
     

    // Menu bascule fond de plan
    const mapMenuDiv = document.createElement('div');
    mapMenuDiv.classList.add('mapFondDePlan');
    mapMenuDiv.style.position = 'absolute';
    mapMenuDiv.style.zIndex = '1000';
    mapMenuDiv.innerHTML = `
      <strong>Fond de plan :</strong>
      <div class="form-check form-switch">
        <input class="form-check-input" type="checkbox" role="switch" id="orthoCheckbox">
        <label class="form-check-label" for="orthoCheckbox">Photos aériennes</label>
      </div>
    `;
    map.getContainer().appendChild(mapMenuDiv);

    document.getElementById('orthoCheckbox').addEventListener('change', function (e) {
      e.preventDefault();
      e.stopPropagation();
      toggleStyle(this.checked);
    });
  });
};