first commit

app/api/catalog.py

@@ -0,0 +1,21 @@
+from fastapi import APIRouter, Depends
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.orm import selectinload
+
+from app.db.session import get_session
+from app.models.car import CarMake
+from app.schemas.car import CarMakeRead
+
+router = APIRouter(prefix="/catalog", tags=["catalog"])
+
+
+@router.get("/makes", response_model=list[CarMakeRead])
+async def list_makes(session: AsyncSession = Depends(get_session)) -> list[CarMake]:
+    result = await session.execute(
+        select(CarMake).options(selectinload(CarMake.models)).order_by(CarMake.name)
+    )
+    makes = list(result.scalars())
+    for make in makes:
+        make.models.sort(key=lambda model: model.name)
+    return makes