from typing import List

from fastapi import APIRouter, HTTPException

from genetic_algorithm.genetic_algorithm import genetic_algorithm, load_graph_from_request
from schemas import TripRequest, FlightSegment, TripOption

router = APIRouter(
    prefix="/flight",
    tags=["Flight"],
)


@router.post("/get/", response_model=List[TripOption])
async def get_flight(request: TripRequest):
    graphTo, graphBack, start_point, end_point, flightsDataTo, flightsDataBack, departure_date, departure_date_return = load_graph_from_request(
        request)
    if request.returnDate:
        resultTo = genetic_algorithm(start=start_point, end=end_point, graph=graphTo, flights_data=flightsDataTo,
                                     type="to", departure_date=departure_date)
        resultFrom = genetic_algorithm(start=end_point, end=start_point, graph=graphBack, flights_data=flightsDataBack,
                                       type="back", departure_date=departure_date_return)
        if not resultTo or not resultFrom:
            raise HTTPException(status_code=404, detail="No valid paths found")

        trip_options = []
        for to_trip in resultTo:
            for back_trip in resultFrom:
                to_segments = [FlightSegment(**segment) for segment in to_trip["to"]]
                back_segments = [FlightSegment(**segment) for segment in back_trip["back"]]
                trip_options.append(TripOption(to=to_segments, back=back_segments))

        return trip_options

    else:
        resultTo = genetic_algorithm(start=start_point, end=end_point, graph=graphTo, flights_data=flightsDataTo,
                                     type="to", departure_date=departure_date)
        if not resultTo:
            raise HTTPException(status_code=404, detail="No valid paths found")

        trip_options = [TripOption(to=[FlightSegment(**segment) for segment in trip["to"]], back=[]) for trip in
                        resultTo]

        return trip_options