fix: Calculate cosine_similarity for selected code

lib/medical_transcription/coding.ex

@@ -169,6 +169,17 @@ defmodule Medicode.Coding do
     )
   end
 
+  def get_cosine_similarity(vector1, vector2) do
+    query =
+      from v in CodeVector,
+        select: %{cosine_similarity: 1 - cosine_distance(^vector1, ^vector2)},
+        limit: 1
+
+    query
+    |> Repo.one()
+    |> Map.get(:cosine_similarity)
+  end
+
   # Retrieves code vectors referenced in past feedback for a given search text. This allows including additional codes
   # for the weighting process outside of the closest 5 returned by `find_similar/2`.
   defp find_for_feedback(search_vector, past_feedbacks) do

lib/medical_transcription_web/components/code_select.ex

@@ -115,7 +115,8 @@ defmodule MedicodeWeb.Components.CodeSelect do
       assigned_by_user_id: socket.assigns.current_user.id,
       code_vector_id: selected_code.id,
       transcription_chunk_id: socket.assigns.chunk.id,
-      cosine_similarity: 1.0
+      cosine_similarity:
+        Medicode.Coding.get_cosine_similarity(text_vector, selected_code.description_vector)
     })
 
     send_update(MedicodeWeb.Components.TranscriptionTextComponent,