Switch repository search to order matches in repo names higher

Helps push better results to the top of the results list

data/model/repository.py

@@ -4,6 +4,7 @@ import random
 from enum import Enum
 from datetime import timedelta, datetime
 from peewee import JOIN_LEFT_OUTER, fn, SQL, IntegrityError
+from playhouse.shortcuts import case
 from cachetools import ttl_cache
 
 from data.model import (config, DataModelException, tag, db_transaction, storage, permission,
@@ -485,14 +486,21 @@ def _get_sorted_matching_repositories(lookup_value, repo_kind='image', include_p
 
   # Always search at least on name (init clause)
   clause = Repository.name.match(lookup_value)
+  computed_score = RepositorySearchScore.score.alias('score')
 
+  # If the description field is in the search fields, then we need to compute a synthetic score
+  # to discount the weight of the description more than the name.
   if SEARCH_FIELDS.description.name in search_fields:
     clause = Repository.description.match(lookup_value) | clause
 
-  last_week = datetime.now() - timedelta(weeks=1)
+    cases = [
+      (Repository.name.match(lookup_value), 100 * RepositorySearchScore.score),
+    ]
+
+    computed_score = case(None, cases, RepositorySearchScore.score).alias('score')
 
   query = (Repository
-           .select(Repository, Namespace)
+           .select(Repository, Namespace, computed_score)
            .join(Namespace, on=(Namespace.id == Repository.namespace_user))
            .where(clause)
            .group_by(Repository.id, Namespace.id))
@@ -507,7 +515,7 @@ def _get_sorted_matching_repositories(lookup_value, repo_kind='image', include_p
            .switch(Repository)
            .join(RepositorySearchScore)
            .group_by(Repository, Namespace, RepositorySearchScore)
-           .order_by(RepositorySearchScore.score.desc()))
+           .order_by(SQL('score').desc()))
 
   return query