feat(up): capture follower snapshots at ingest and backfill history

tests/test_folder_sync.py

@@ -45,9 +45,17 @@ class FakeFavTransport:
         self.omit_ids_data = omit_ids_data
         self.ids_calls = []
         self.info_calls = []
+        self.relation_calls = []
 
     def request(self, method, url, headers, data=None, timeout=30):
         query = urllib.parse.parse_qs(urllib.parse.urlparse(url).query)
+        if "/x/relation/stat" in url:
+            mid = int(query["vmid"][0])
+            self.relation_calls.append(mid)
+            return http_json({
+                "code": 0, "message": "0", "ttl": 1,
+                "data": {"mid": mid, "following": 5, "follower": 1000 + mid},
+            })
         if "/x/v3/fav/resource/ids" in url:
             media_id = int(query["media_id"][0])
             self.ids_calls.append(media_id)
@@ -165,6 +173,13 @@ def test_initial_import_and_incremental_skip():
             assert repo.get_video(1104)["bvid"] == "BV1104"
             assert repo.folder_active_aids(F1) == {1101, 1102, 1103, 1104}
             assert repo.is_blacklisted(999)
+            # 新入库视频记录入库时粉丝数；失效视频不再采集
+            assert summary.followers_updated == 2
+            assert summary.followers_failed == 0
+            assert repo.get_video(1101)["up_follower"] == 1100
+            assert repo.get_video(1101)["up_follower_backfilled"] == 0
+            assert repo.get_video(1102)["up_follower"] == 1999
+            assert sorted(transport.relation_calls) == [100, 999]
 
             folder = repo.get_folder(F1)
             assert folder.media_count == 4
@@ -173,10 +188,12 @@ def test_initial_import_and_incremental_skip():
             # 6 小时内再次运行：没有新增，不请求 infos
             clock[0] += 60
             info_before = len(transport.info_calls)
+            relation_before = len(transport.relation_calls)
             summary2 = service.run()
             assert summary2.added == 0
             assert summary2.refreshed == 0
             assert len(transport.info_calls) == info_before
+            assert len(transport.relation_calls) == relation_before
             assert summary2.folders[0].full_refresh is False
         finally:
             db.close()