[+] improve asset_history

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/schema.py

@@ -30,12 +30,15 @@ Action = pydantic.RootModel[
 ]
 
 class AssetHistoryResponse(pydantic.BaseModel):
-	action: Literal['asset_history']
+	action: Literal['asset_history'] = 'asset_history'
+
 	class message_t(pydantic.BaseModel):
 		class point_t(pydantic.BaseModel):
 			asset_name : Annotated[
 				str,
-				pydantic.Field(alias='assetName')
+				pydantic.Field(
+					alias='assetName',
+				)
 			]
 			time: int
 			asset_id : Annotated[
@@ -48,11 +51,13 @@ class AssetHistoryResponse(pydantic.BaseModel):
 	message: message_t
 
 class AssetTickerResponse(pydantic.BaseModel):
-	action: Literal['point']
+	action: Literal['point'] = 'point'
+
 	message: 'AssetHistoryResponse.message_t.point_t'
 
 class AssetsResponse(pydantic.BaseModel):
-	action: Literal['asset_history']
+	action: Literal['asset_history'] = 'asset_history'
+
 	class message_t(pydantic.BaseModel):
 		class asset_t(pydantic.BaseModel):
 			id: int

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/websocket_api.py

@@ -42,6 +42,9 @@ class WebsocketAPI:
 			del self.subscriptions_by_asset_id[last_asset_id]
 			del self.subscriptions_by_client[client]
 
+		if not asset_id in self.subscriptions_by_asset_id:
+			self.subscriptions_by_asset_id[asset_id] = set()
+
 		self.subscriptions_by_asset_id[asset_id].add(client)
 		self.subscriptions_by_client[client] = asset_id
 
@@ -59,10 +62,10 @@ class WebsocketAPI:
 		)
 
 		await client.send_text(
-			schema.AssetHistoryResponse.model_validate(dict(
-				message=dict(
+			schema.AssetHistoryResponse(
+				message=schema.AssetHistoryResponse.message_t(
 					points=[
-						dict(
+						schema.AssetHistoryResponse.message_t.point_t.model_construct(
 							asset_name=o.market.name,
 							asset_id=o.market.id,
 							time=o.timestamp.timestamp(),
@@ -71,7 +74,7 @@ class WebsocketAPI:
 						for o in tickers
 					]
 				)
-			)).json(),
+			).json(by_alias=True,),
 		)
 
 	async def assets_index(