import fastapi
import pydantic
import typing

from app.storage.mongo import tasks
from app.storage import redis


router = fastapi.APIRouter()


class Response(pydantic.BaseModel):
    id: str
    attempt: int
    payload: dict


@router.get('/api/v1/take', responses={404: {'description': 'Not found'}})
async def execute(queue: typing.Annotated[str, fastapi.Header()]) -> Response:
    async with redis.database.lock(queue):
        task = await tasks.take_task(queue)
    if not task:
        raise fastapi.HTTPException(404)
    return Response(id=str(task._id), attempt=task.attempts, payload=task.payload)