feat(fetcher): add data fetcher

app/router/__init__.py

@@ -7,6 +7,7 @@ from . import (  # pyright: ignore[reportUnusedImport]  # noqa: F401
 )
 from .api_router import router as api_router
 from .auth import router as auth_router
+from .fetcher import fetcher_router as fetcher_router
 from .signalr import signalr_router as signalr_router
 
-__all__ = ["api_router", "auth_router", "signalr_router"]
+__all__ = ["api_router", "auth_router", "fetcher_router", "signalr_router"]

app/router/fetcher.py

@@ -0,0 +1,14 @@
+from __future__ import annotations
+
+from app.dependencies.fetcher import get_fetcher
+from app.fetcher import Fetcher
+
+from fastapi import APIRouter, Depends
+
+fetcher_router = APIRouter()
+
+
+@fetcher_router.get("/callback")
+async def callback(code: str, fetcher: Fetcher = Depends(get_fetcher)):
+    await fetcher.grant_access_token(code)
+    return {"message": "Login successful"}