from typing import Optional

from asyncreq import request
from fastapi import APIRouter, BackgroundTasks, Depends, HTTPException
from sqlalchemy.orm import Session

from src.api.config import API_MESSAGES
from src.api.cruds import flight as flight_crud
from src.api.db import get_db
from src.api.schemas.flight import Flight, FlightCreate, FlightStatusUpdate

router = APIRouter()


@router.get("/{id}", response_model=Flight)
def get_flight_by_id(id: int, db: Session = Depends(get_db)):
    db_flight = flight_crud.get_flight_by_id(db, id)
    if db_flight is None:
        raise HTTPException(status_code=404, detail="Flight not found")
    return db_flight


@router.post("", response_model=Flight)
def create_flight(flight: FlightCreate, db: Session = Depends(get_db)):
    return flight_crud.create_flight(db=db, flight=flight)


@router.patch("/{id}", response_model=Flight)
async def update_flight(
    id: int,
    status: FlightStatusUpdate,
    background_tasks: BackgroundTasks,
    db: Session = Depends(get_db),
):
    try:
        db_flight = flight_crud.update_flight_status(db=db, id=id, status=status)
    except PermissionError:
        raise HTTPException(status_code=401, detail="Unauthorized")
    except KeyError:
        raise HTTPException(status_code=404, detail="Flight not found")

    msg = status.model_dump()
    msg["id"] = id
    msg["flight_code"] = db_flight.flight_code
    msg["origin"] = db_flight.origin
    msg["destination"] = db_flight.destination
    background_tasks.add_task(request, API_MESSAGES, "POST", json=msg)
    return db_flight


@router.get("", response_model=list[Flight])
def get_flights(
    origin: Optional[str] = None,
    destination: Optional[str] = None,
    lastUpdated: Optional[str] = None,
    db: Session = Depends(get_db),
):
    if origin and lastUpdated:
        flights = flight_crud.get_flights_update_origin(db, origin, lastUpdated)
    elif destination and lastUpdated:
        flights = flight_crud.get_flights_update_destination(
            db, destination, lastUpdated
        )
    elif origin:
        flights = flight_crud.get_flights_by_origin(db=db, origin=origin)
    elif destination:
        flights = flight_crud.get_flights_by_destination(db=db, destination=destination)
    else:
        flights = flight_crud.get_flights(db=db)

    if not flights:
        raise HTTPException(status_code=404, detail="Flights not found")

    return flights