import { NextResponse } from 'next/server';

interface VatsimFlight {
  callsign: string;
  departure: string;
  arrival: string;
  route: string;
  planned_deptime: string;
  planned_arrtime: string;
  flightplan: object;
}

export async function GET(
  request: Request,
  { params }: { params: { icao: string } }
) {
  try {
    const response = await fetch('https://data.vatsim.net/v3/vatsim-data.json', {
      next: { revalidate: 60 } // Cache for 1 minute
    });

    if (!response.ok) {
      throw new Error('Failed to fetch VATSIM data');
    }

    const data = await response.json();
    const icao = params.icao.toUpperCase();

    // Filter out pilots without a valid flight plan
    const flights = data.pilots
      .filter((pilot) =>
        pilot.flight_plan && (pilot.flight_plan.departure === icao || pilot.flight_plan.arrival === icao)
      )
      .map((pilot) => ({
        callsign: pilot.callsign,
        type: pilot.flight_plan.departure === icao ? 'Departure' : 'Arrival',
        time: pilot.flight_plan.departure === icao ? pilot.flight_plan.deptime : pilot.flight_plan.arrival,
        route: pilot.flight_plan.route,
        origin: pilot.flight_plan.departure,
        destination: pilot.flight_plan.arrival
      }));
    return NextResponse.json(flights);
  } catch (error) {
    console.log(error);
    return NextResponse.json({ error: 'Failed to fetch VATSIM data' }, { status: 500 });
  }
}