Add JSON-LD context to STAC resources

Author: avillar

pygeoapi/api/stac.py

@@ -56,7 +56,7 @@
 )
 from pygeoapi.util import (
     filter_dict_by_key_value, get_current_datetime, get_provider_by_type,
-    render_j2_template, to_json
+    render_j2_template, to_json, get_base_url
 )
 
 from . import APIRequest, API, FORMAT_TYPES, F_JSON, F_HTML
@@ -200,6 +200,8 @@ def get_stac_path(api: API, request: APIRequest,
         content['links'].extend(
             stac_collections[dataset].get('links', []))
 
+        linked_data = api.config['resources'][dataset].get('linked-data')
+
         if request.format == F_HTML:  # render
             content['path'] = path
             if 'assets' in content:  # item view
@@ -227,6 +229,18 @@ def get_stac_path(api: API, request: APIRequest,
 
             return headers, HTTPStatus.OK, content
 
+        elif (linked_data
+                and all(linked_data.get(k)
+                        for k in ('context', 'inject_verbatim_context'))):
+            content = {
+                '@context': linked_data['context'],
+                **content
+            }
+            if replace_id_field := linked_data.get('replace_id_field'):
+                content[replace_id_field] = (f"{get_base_url(api.config)}"
+                                             f"/stac/{path}")
+                pass
+
         return headers, HTTPStatus.OK, to_json(content, api.pretty_print)
 
     else:  # send back file