ADD get menu by id

src/fastfood_two/application/contracts/requests.py

@@ -18,3 +18,8 @@ class UpdateMenuDTO:
 @dataclass(frozen=True)
 class DeleteMenuDTO:
     id: UUID
+
+
+@dataclass(frozen=True)
+class GetMenuByIdDTO:
+    id: UUID

src/fastfood_two/application/usecases/menu/get_menu_by_id.py

@@ -0,0 +1,26 @@
+from fastfood_two.application.abstractions.interactor import Interactor
+from fastfood_two.application.contracts.requests import GetMenuByIdDTO
+from fastfood_two.application.contracts.responses import MenuDTO
+from fastfood_two.domain.menu.error import MenuNotFoundError
+from fastfood_two.domain.menu.gateway import MenuGateway
+from fastfood_two.domain.menu.menu_entity import MenuId
+
+
+class GetMenuById(Interactor[GetMenuByIdDTO, MenuDTO]):
+    def __init__(self, gateway: MenuGateway) -> None:
+        self._menu_gateway = gateway
+
+    async def __call__(self, request: GetMenuByIdDTO) -> MenuDTO:
+
+        menu = await self._menu_gateway.get_menu_by_id(
+            id=MenuId(request.id),
+        )
+
+        if not menu:
+            raise MenuNotFoundError(message="Menu not found")
+
+        return MenuDTO(
+            id=menu.id.value,
+            title=menu.title.value,
+            description=menu.description.value,
+        )

src/fastfood_two/infrastructure/menu_gateway.py

@@ -16,7 +16,11 @@ class MenuGatewayImpl:
         menus = await self._session.execute(query)
         return [db_entity_to_domain(menu.tuple()) for menu in menus]
 
-    async def get_menu_by_id(self, id: MenuId) -> Menu | None: ...
+    async def get_menu_by_id(self, id: MenuId) -> Menu | None:
+        query = text("SELECT * FROM menu WHERE id = :id;")
+        menu = (await self._session.execute(query, {"id": id.value})).tuples().first()
+
+        return db_entity_to_domain(menu) if menu else None
 
     async def insert_menu(self, menu: Menu) -> Menu:
         query = text("INSERT INTO menu (id, title, description) VALUES (:id, :title, :description);")

src/fastfood_two/presentation/fastapi_backend/dependencies.py

@@ -8,6 +8,7 @@ from fastfood_two.application.config import Config
 from fastfood_two.application.usecases.menu.add_menu import AddMenu
 from fastfood_two.application.usecases.menu.delete_menu import DeleteMenu
 from fastfood_two.application.usecases.menu.get_all_menus import GetAllMenus
+from fastfood_two.application.usecases.menu.get_menu_by_id import GetMenuById
 from fastfood_two.application.usecases.menu.update_menu import UpdateMenu
 from fastfood_two.domain.menu.gateway import MenuGateway
 from fastfood_two.presentation.fastapi_backend.depends.config import get_settings
@@ -21,6 +22,7 @@ from fastfood_two.presentation.fastapi_backend.depends.usecases import (
     add_menu_usecase,
     delete_menu_usecase,
     get_all_menus_usecase,
+    get_menu_by_id_usecase,
     update_menu_usecase,
 )
 
@@ -47,5 +49,6 @@ def init_dependencies(app: FastAPI) -> None:
     app.dependency_overrides[AddMenu] = add_menu_usecase
     app.dependency_overrides[UpdateMenu] = update_menu_usecase
     app.dependency_overrides[DeleteMenu] = delete_menu_usecase
+    app.dependency_overrides[GetMenuById] = get_menu_by_id_usecase
 
     logger.info("Dependencies initialized")

src/fastfood_two/presentation/fastapi_backend/depends/usecases.py

@@ -5,6 +5,7 @@ from fastapi import Depends
 from fastfood_two.application.usecases.menu.add_menu import AddMenu
 from fastfood_two.application.usecases.menu.delete_menu import DeleteMenu
 from fastfood_two.application.usecases.menu.get_all_menus import GetAllMenus
+from fastfood_two.application.usecases.menu.get_menu_by_id import GetMenuById
 from fastfood_two.application.usecases.menu.update_menu import UpdateMenu
 from fastfood_two.domain.menu.gateway import MenuGateway
 from fastfood_two.presentation.fastapi_backend.depends.stub import Stub
@@ -24,3 +25,7 @@ def update_menu_usecase(gateway: Annotated[MenuGateway, Depends(Stub(MenuGateway
 
 def delete_menu_usecase(gateway: Annotated[MenuGateway, Depends(Stub(MenuGateway))]) -> DeleteMenu:
     return DeleteMenu(gateway=gateway)
+
+
+def get_menu_by_id_usecase(gateway: Annotated[MenuGateway, Depends(Stub(MenuGateway))]) -> GetMenuById:
+    return GetMenuById(gateway=gateway)

src/fastfood_two/presentation/fastapi_backend/routers/menu.py

@@ -6,12 +6,14 @@ from fastapi import APIRouter, Depends
 from fastfood_two.application.contracts.requests import (
     AddMenuDTO,
     DeleteMenuDTO,
+    GetMenuByIdDTO,
     UpdateMenuDTO,
 )
 from fastfood_two.application.contracts.responses import MenuDTO
 from fastfood_two.application.usecases.menu.add_menu import AddMenu
 from fastfood_two.application.usecases.menu.delete_menu import DeleteMenu
 from fastfood_two.application.usecases.menu.get_all_menus import GetAllMenus
+from fastfood_two.application.usecases.menu.get_menu_by_id import GetMenuById
 from fastfood_two.application.usecases.menu.update_menu import UpdateMenu
 from fastfood_two.presentation.fastapi_backend.depends.stub import Stub
 from fastfood_two.presentation.fastapi_backend.pdmodels.menu import (
@@ -129,3 +131,30 @@ async def delete_menu(
         )
     )
     return
+
+
+@router.get("/{menu_id}", response_model=MenuDTO)
+async def get_menu_by_id(
+    menu_id: UUID,
+    usecase: Annotated[GetMenuById, Depends(Stub(GetMenuById))],
+) -> MenuDTO:
+    """Get menus by id.
+
+    Endpoint allows to get food menu item by id
+
+    Parameters
+    ----------
+    menu_id: UUID
+        requaired id of the menu item
+
+    Returns
+    -------
+    MenuDTO
+        menu item
+    """
+    menu = await usecase(
+        request=GetMenuByIdDTO(
+            id=menu_id,
+        )
+    )
+    return menu