feat(download-history): track downloaded model versions

tests/routes/test_misc_routes.py

@@ -438,6 +438,46 @@ async def fake_metadata_archive_manager_factory():
     return FakeMetadataArchiveManager()
 
 
+class FakeDownloadHistoryService:
+    def __init__(self, downloaded_by_type=None):
+        self.downloaded_by_type = downloaded_by_type or {}
+        self.marked_downloaded: list[tuple] = []
+        self.marked_not_downloaded: list[tuple] = []
+
+    async def has_been_downloaded(self, model_type, version_id):
+        return version_id in self.downloaded_by_type.get(model_type, set())
+
+    async def get_downloaded_version_ids(self, model_type, model_id):
+        entries = self.downloaded_by_type.get(model_type, {})
+        if isinstance(entries, dict):
+            return sorted(entries.get(model_id, set()))
+        return []
+
+    async def get_downloaded_version_ids_bulk(self, model_type, model_ids):
+        entries = self.downloaded_by_type.get(model_type, {})
+        if not isinstance(entries, dict):
+            return {}
+        return {
+            model_id: set(entries.get(model_id, set()))
+            for model_id in model_ids
+            if model_id in entries
+        }
+
+    async def mark_downloaded(
+        self, model_type, version_id, *, model_id=None, source="manual", file_path=None
+    ):
+        self.marked_downloaded.append(
+            (model_type, version_id, model_id, source, file_path)
+        )
+
+    async def mark_not_downloaded(self, model_type, version_id):
+        self.marked_not_downloaded.append((model_type, version_id))
+
+
+async def fake_download_history_service_factory():
+    return FakeDownloadHistoryService()
+
+
 class RecordingRegistrar:
     def __init__(self, _app):
         self.registered_mapping = None
@@ -452,6 +492,7 @@ async def test_misc_routes_bind_produces_expected_handlers():
         get_lora_scanner=fake_scanner_factory,
         get_checkpoint_scanner=fake_scanner_factory,
         get_embedding_scanner=fake_scanner_factory,
+        get_downloaded_version_history_service=fake_download_history_service_factory,
     )
 
     recorded_registrars = []
@@ -578,6 +619,7 @@ async def test_get_civitai_user_models_marks_library_versions():
             get_lora_scanner=lora_factory,
             get_checkpoint_scanner=checkpoint_factory,
             get_embedding_scanner=embedding_factory,
+            get_downloaded_version_history_service=lambda: fake_download_history_service_factory(),
         ),
         metadata_provider_factory=provider_factory,
     )
@@ -600,6 +642,7 @@ async def test_get_civitai_user_models_marks_library_versions():
             "baseModel": "Flux.1",
             "thumbnailUrl": "http://example.com/a1.jpg",
             "inLibrary": False,
+            "hasBeenDownloaded": False,
         },
         {
             "modelId": 1,
@@ -611,6 +654,7 @@ async def test_get_civitai_user_models_marks_library_versions():
             "baseModel": "Flux.1",
             "thumbnailUrl": "http://example.com/a2.jpg",
             "inLibrary": True,
+            "hasBeenDownloaded": False,
         },
         {
             "modelId": 2,
@@ -622,6 +666,7 @@ async def test_get_civitai_user_models_marks_library_versions():
             "baseModel": None,
             "thumbnailUrl": "http://example.com/e1.jpg",
             "inLibrary": False,
+            "hasBeenDownloaded": False,
         },
         {
             "modelId": 2,
@@ -633,6 +678,7 @@ async def test_get_civitai_user_models_marks_library_versions():
             "baseModel": None,
             "thumbnailUrl": None,
             "inLibrary": True,
+            "hasBeenDownloaded": False,
         },
         {
             "modelId": 3,
@@ -644,6 +690,7 @@ async def test_get_civitai_user_models_marks_library_versions():
             "baseModel": "SDXL",
             "thumbnailUrl": None,
             "inLibrary": False,
+            "hasBeenDownloaded": False,
         },
     ]
 
@@ -692,6 +739,7 @@ async def test_get_civitai_user_models_rewrites_civitai_previews():
             get_lora_scanner=fake_scanner_factory,
             get_checkpoint_scanner=fake_scanner_factory,
             get_embedding_scanner=fake_scanner_factory,
+            get_downloaded_version_history_service=fake_download_history_service_factory,
         ),
         metadata_provider_factory=provider_factory,
     )
@@ -727,6 +775,7 @@ async def test_get_civitai_user_models_requires_username():
             get_lora_scanner=fake_scanner_factory,
             get_checkpoint_scanner=fake_scanner_factory,
             get_embedding_scanner=fake_scanner_factory,
+            get_downloaded_version_history_service=fake_download_history_service_factory,
         ),
         metadata_provider_factory=provider_factory,
     )
@@ -760,6 +809,7 @@ def test_ensure_handler_mapping_caches_result():
             get_lora_scanner=fake_scanner_factory,
             get_checkpoint_scanner=fake_scanner_factory,
             get_embedding_scanner=fake_scanner_factory,
+            get_downloaded_version_history_service=fake_download_history_service_factory,
         ),
         metadata_provider_factory=fake_metadata_provider_factory,
         metadata_archive_manager_factory=fake_metadata_archive_manager_factory,
@@ -802,6 +852,7 @@ async def test_check_model_exists_returns_local_versions():
             get_lora_scanner=lora_factory,
             get_checkpoint_scanner=checkpoint_factory,
             get_embedding_scanner=embedding_factory,
+            get_downloaded_version_history_service=fake_download_history_service_factory,
         ),
         metadata_provider_factory=fake_metadata_provider_factory,
     )
@@ -811,10 +862,94 @@ async def test_check_model_exists_returns_local_versions():
 
     assert payload["success"] is True
     assert payload["modelType"] == "lora"
-    assert payload["versions"] == versions
+    assert payload["versions"] == [
+        {"versionId": 11, "name": "v1", "fileName": "model-one", "hasBeenDownloaded": True},
+        {"versionId": 12, "name": "v2", "fileName": "model-two", "hasBeenDownloaded": True},
+    ]
     assert lora_scanner.version_calls == [5]
 
 
+@pytest.mark.asyncio
+async def test_check_model_exists_returns_download_history_when_file_missing():
+    history_service = FakeDownloadHistoryService({"checkpoint": {999}})
+
+    async def history_factory():
+        return history_service
+
+    handler = ModelLibraryHandler(
+        ServiceRegistryAdapter(
+            get_lora_scanner=fake_scanner_factory,
+            get_checkpoint_scanner=fake_scanner_factory,
+            get_embedding_scanner=fake_scanner_factory,
+            get_downloaded_version_history_service=history_factory,
+        ),
+        metadata_provider_factory=fake_metadata_provider_factory,
+    )
+
+    response = await handler.check_model_exists(
+        FakeRequest(query={"modelId": "5", "modelVersionId": "999"})
+    )
+    payload = json.loads(response.text)
+
+    assert payload == {
+        "success": True,
+        "exists": False,
+        "modelType": "checkpoint",
+        "hasBeenDownloaded": True,
+    }
+
+
+@pytest.mark.asyncio
+async def test_model_version_download_status_endpoints():
+    history_service = FakeDownloadHistoryService({"lora": {123}})
+
+    async def history_factory():
+        return history_service
+
+    handler = ModelLibraryHandler(
+        ServiceRegistryAdapter(
+            get_lora_scanner=fake_scanner_factory,
+            get_checkpoint_scanner=fake_scanner_factory,
+            get_embedding_scanner=fake_scanner_factory,
+            get_downloaded_version_history_service=history_factory,
+        ),
+        metadata_provider_factory=fake_metadata_provider_factory,
+    )
+
+    get_response = await handler.get_model_version_download_status(
+        FakeRequest(query={"modelType": "lora", "modelVersionId": "123"})
+    )
+    get_payload = json.loads(get_response.text)
+    assert get_payload == {
+        "success": True,
+        "modelType": "lora",
+        "modelVersionId": 123,
+        "hasBeenDownloaded": True,
+    }
+
+    set_response = await handler.set_model_version_download_status(
+        FakeRequest(
+            json_data={
+                "modelType": "checkpoint",
+                "modelVersionId": 456,
+                "modelId": 78,
+                "downloaded": True,
+                "filePath": "/tmp/model.safetensors",
+            }
+        )
+    )
+    set_payload = json.loads(set_response.text)
+    assert set_payload == {
+        "success": True,
+        "modelType": "checkpoint",
+        "modelVersionId": 456,
+        "hasBeenDownloaded": True,
+    }
+    assert history_service.marked_downloaded == [
+        ("checkpoint", 456, 78, "manual", "/tmp/model.safetensors")
+    ]
+
+
 def test_create_handler_set_uses_provided_dependencies():
     recorded_handlers: list[dict] = []
 
@@ -845,6 +980,7 @@ def test_create_handler_set_uses_provided_dependencies():
             get_lora_scanner=fake_scanner_factory,
             get_checkpoint_scanner=fake_scanner_factory,
             get_embedding_scanner=fake_scanner_factory,
+            get_downloaded_version_history_service=fake_download_history_service_factory,
         ),
         metadata_provider_factory=fake_metadata_provider_factory,
         metadata_archive_manager_factory=fake_metadata_archive_manager_factory,