Feature: add collection render layers to map in HTML collection view

docker-compose.yml

@@ -89,6 +89,7 @@ services:
       - MOSAIC_CONCURRENCY=1
       - AWS_ACCESS_KEY_ID=${AWS_ACCESS_KEY_ID}
       - AWS_SECRET_ACCESS_KEY=${AWS_SECRET_ACCESS_KEY}
+      - AWS_SESSION_TOKEN=${AWS_SESSION_TOKEN}
     env_file:
       - path: .env
         required: false

runtimes/eoapi/stac/eoapi/stac/app.py

@@ -212,6 +212,7 @@ async def lifespan(app: FastAPI):
         title=settings.stac_fastapi_title,
         description=settings.stac_fastapi_description,
         pgstac_search_model=search_post_model,
+        titiler_endpoint=settings.titiler_endpoint,
     ),
     item_get_request_model=item_get_model,
     items_get_request_model=items_get_model,

runtimes/eoapi/stac/eoapi/stac/client.py

@@ -14,7 +14,7 @@
     Type,
     get_args,
 )
-from urllib.parse import unquote_plus, urljoin
+from urllib.parse import unquote_plus, urlencode, urljoin
 
 import attr
 import jinja2
@@ -243,9 +243,35 @@ async def get_queryables(
         return queryables
 
 
+def add_render_links(collection: Collection, titiler_endpoint: str) -> Collection:
+    if renders := collection.get("renders"):
+        base_url = f"{titiler_endpoint}/collections/{collection['id']}/WebMercatorQuad"
+        for render, metadata in renders.items():
+            query_params = urlencode(metadata, doseq=True)
+            collection["links"].append(
+                {
+                    "rel": "map",
+                    "title": f"{render} interactive map",
+                    "type": MimeTypes.html.value,
+                    "href": f"{base_url}/map?{query_params}",
+                }
+            )
+            collection["links"].append(
+                {
+                    "rel": "tilejson",
+                    "title": f"{render} tilejson",
+                    "type": MimeTypes.json.value,
+                    "href": f"{base_url}/tilejson.json?{query_params}",
+                }
+            )
+
+    return collection
+
+
 @attr.s
 class PgSTACClient(CoreCrudClient):
     pgstac_search_model: Type[PgstacSearch] = attr.ib(default=PgstacSearch)
+    titiler_endpoint: Optional[str] = attr.ib(default=None)
 
     async def landing_page(
         self,
@@ -383,6 +409,9 @@ async def all_collections(
         **kwargs,
     ) -> Collections:
         collections = await super().all_collections(request, *args, **kwargs)
+        if self.titiler_endpoint:
+            for collection in collections["collections"]:
+                collection = add_render_links(collection, self.titiler_endpoint)
 
         output_type: Optional[MimeTypes]
         if f:
@@ -425,6 +454,9 @@ async def get_collection(
             collection_id, request, *args, **kwargs
         )
 
+        if self.titiler_endpoint:
+            collection = add_render_links(collection, self.titiler_endpoint)
+
         output_type: Optional[MimeTypes]
         if f:
             output_type = MimeTypes[f]

runtimes/eoapi/stac/eoapi/stac/templates/collection.html

@@ -39,7 +39,7 @@ <h1 class="my-4">
         {% for keyword in response.keywords %}
         <li class="badge badge-secondary">{{ keyword }}</li>
         {% endfor %}
-      </lul>
+      </ul>
     </div>
     {% endif %}
 
@@ -72,17 +72,33 @@ <h2>Links</h2>
 </div>
 
 {% if response.extent and response.extent.spatial %}
+
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css">
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/leaflet.fullscreen/2.0.0/Control.FullScreen.css" />
+<script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet.fullscreen/2.0.0/Control.FullScreen.min.js"></script>
+
 <script>
   window.addEventListener("load", function() {
     const collection = {{ response|tojson }};
-    var map = L.map('map').setView([0, 0], 1);
-    map.addLayer(new L.TileLayer(
+    var map = L.map('map', {
+      fullscreenControl: true,
+      fullscreenControlOptions: {
+        position: 'bottomright',
+        title: 'View Fullscreen',
+        titleCancel: 'Exit Fullscreen',
+        content: '<i class="fa fa-expand"></i>'  // You can customize this icon
+      }
+    }).setView([0, 0], 1);
+
+    var osmLayer = new L.TileLayer(
       'https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
         maxZoom: 18,
         attribution: 'Map data &copy; <a href="https://openstreetmap.org/copyright">OpenStreetMap contributors</a>'
       }
-    ));
+    );
+    map.addLayer(osmLayer);
 
+    // Draw the bounding boxes
     for (let i = 0, len = collection.extent.spatial.bbox.length; i < len; i++) {
       const options = i === 0 ? {
         fill: false,
@@ -101,12 +117,63 @@ <h2>Links</h2>
         [bbox[3], bbox[0]]
       ], options);
 
-
       map.addLayer(bbox_polygon);
       if (i === 0) {
         map.fitBounds(bbox_polygon.getBounds());
       }
     }
+
+    // Add any tilejson links as layers to the map
+    const tileJsonLinks = collection.links.filter(link => link.rel === "tilejson");
+
+    const overlayLayers = {};
+
+    if (tileJsonLinks.length > 0) {
+      tileJsonLinks.forEach((link, index) => {
+        fetch(link.href)
+          .then(response => response.json())
+          .then(tileJson => {
+            const tileLayer = L.tileLayer(tileJson.tiles[0], {
+              attribution: tileJson.attribution || '',
+              minZoom: tileJson.minzoom || 0,
+              maxZoom: tileJson.maxzoom || 18
+            });
+
+            const layerName = link.title || `TileJSON Layer ${index + 1}`;
+            overlayLayers[layerName] = tileLayer;
+
+            // Add the first layer to the map by default
+            if (index === 0) {
+              tileLayer.addTo(map);
+            }
+
+            // Add layer control after all layers are processed
+            if (index === tileJsonLinks.length - 1) {
+              // Define the base layers
+              const baseLayers = {
+                "OpenStreetMap": osmLayer
+              };
+
+              // Add the layer control to the map
+              L.control.layers(baseLayers, overlayLayers).addTo(map);
+            }
+          })
+          .catch(error => {
+            console.error("Error loading TileJSON:", error);
+          });
+      });
+    }
+
+    // Handle fullscreen change event to resize map
+    map.on('fullscreenchange', function() {
+      if (map.isFullscreen()) {
+        console.log('Entered fullscreen');
+      } else {
+        console.log('Exited fullscreen');
+      }
+      // Make sure the map fills the container after fullscreen changes
+      map.invalidateSize();
+    });
   });
 </script>
 {% endif %}