WIP - Forward chapter/page range from VitalSource assignment URLs to …

…client

lms/resources/_js_config/__init__.py

@@ -1,6 +1,7 @@
 import functools
 from enum import Enum
 from typing import Any, Dict, List, Optional
+from urllib.parse import parse_qs, urlparse
 
 from pyramid.httpexceptions import HTTPClientError
 
@@ -112,6 +113,26 @@ def add_document_url(self, document_url):
                     document_url=document_url
                 )
 
+            # If this assignment was configured with a chapter and/or page
+            # range, pass that on to the client.
+            parsed_url = urlparse(document_url)
+            query = parse_qs(parsed_url.query)
+
+            location_params = {
+                # query param => Hypothesis client config key
+                "start_page": "startPage",
+                "end_page": "endPage",
+                "end_chapter": "endChapter",
+            }
+
+            for (param, config_property) in location_params.items():
+                if param in query:
+                    val = query[param][-1]
+                    content_range = self._hypothesis_client.setdefault(
+                        "contentRange", {}
+                    )
+                    content_range[config_property] = val
+
         elif jstor_service.enabled and document_url.startswith("jstor://"):
             self._config["viaUrl"] = jstor_service.via_url(self._request, document_url)
             self._config["contentBanner"] = {