refactor: use rerun_course for course clonging

(cherry picked from commit 895371955ab859e1d1fcd34ea83c49ce15a48cab)

cms/djangoapps/api/v1/serializers/course_runs.py

@@ -199,7 +199,9 @@ def update(self, instance, validated_data):
             'display_name': instance.display_name
         }
         fields.update(validated_data)
-        new_course_run_key = rerun_course(user, course_run_key, course_run_key.org, number, run, fields, False)
+        new_course_run_key = rerun_course(
+            user, course_run_key, course_run_key.org, number, run, fields, background=False,
+        )
 
         course_run = get_course_and_check_access(new_course_run_key, user)
         self.update_team(course_run, team)
@@ -229,10 +231,18 @@ def validate(self, attrs):
     def create(self, validated_data):
         source_course_id = validated_data.get('source_course_id')
         destination_course_id = validated_data.get('destination_course_id')
-        user_id = self.context['request'].user.id
-        store = modulestore()
-        source_key = CourseKey.from_string(source_course_id)
-        dest_key = CourseKey.from_string(destination_course_id)
-        with store.default_store('split'):
-            new_course = store.clone_course(source_key, dest_key, user_id)
-        return new_course
+        user = self.context['request'].user
+        source_course_key = CourseKey.from_string(source_course_id)
+        destination_course_key = CourseKey.from_string(destination_course_id)
+        source_course_run = get_course_and_check_access(source_course_key, user)
+        fields = {
+            'display_name': source_course_run.display_name,
+        }
+
+        destination_course_run_key = rerun_course(
+            user, source_course_key, destination_course_key.org, destination_course_key.course,
+            destination_course_key.run, fields, background=False,
+        )
+
+        destination_course_run = get_course_and_check_access(destination_course_run_key, user)
+        return destination_course_run

cms/djangoapps/api/v1/views/course_runs.py

@@ -99,5 +99,6 @@ def rerun(self, request, *args, **kwargs):  # lint-amnesty, pylint: disable=miss
     def clone(self, request, *args, **kwargs):  # lint-amnesty, pylint: disable=missing-function-docstring, unused-argument
         serializer = CourseCloneSerializer(data=request.data, context=self.get_serializer_context())
         serializer.is_valid(raise_exception=True)
-        serializer.save()
+        new_course_run = serializer.save()
+        serializer = self.get_serializer(new_course_run)
         return Response({"message": "Course cloned successfully."}, status=status.HTTP_201_CREATED)

cms/djangoapps/contentstore/views/course.py

@@ -1025,6 +1025,12 @@ def rerun_course(user, source_course_key, org, number, run, fields, background=T
     if store.has_course(destination_course_key, ignore_case=True):
         raise DuplicateCourseError(source_course_key, destination_course_key)
 
+    # if org or name of source course don't match the destination course,
+    # verify user has access to the destination course
+    if source_course_key.org != destination_course_key.org or source_course_key.course != destination_course_key.course:
+        if not has_studio_write_access(user, destination_course_key):
+            raise PermissionDenied()
+
     # Make sure user has instructor and staff access to the destination course
     # so the user can see the updated status for that course
     add_instructor(destination_course_key, user, user)