ref #8: [feat] add http endpoint

adapter/http/fastapi/dependencies.py

@@ -1,8 +1,7 @@
-from typing import cast
-
 from fastapi import Depends, Request
 
 from adapter.di.container import AppContainer
+from usecase.sandbox import CreateSandbox
 from usecase.user import GetUser
 
 APP_CONTAINER_STATE = 'container'
@@ -11,10 +10,16 @@ APP_CONFIG_STATE = 'config'
 
 def get_container(request: Request) -> AppContainer:
     container = getattr(request.app.state, APP_CONTAINER_STATE, None)
-    if container is None:
+    if not isinstance(container, AppContainer):
         raise RuntimeError('container unavailable')
-    return cast(AppContainer, container)
+    return container
 
 
 def get_get_user(container: AppContainer = Depends(get_container)) -> GetUser:
     return container.usecases.get_user
+
+
+def get_create_sandbox(
+    container: AppContainer = Depends(get_container),
+) -> CreateSandbox:
+    return container.usecases.create_sandbox