import { Place, Trip } from "@/lib/types";
import { PlaceCard } from "@/components/PlaceCard";
import { X, Save } from "lucide-react";
import { ActionButtons } from "./ActionButtons";
import { RenderFunctionStatus } from "@copilotkit/react-core";
import { useState } from "react";

export type EditTripsProps = {
  args: any;
  status: RenderFunctionStatus;
  handler: any;
  trips: Trip[];
  selectedTripId: string;
};

export const EditTrips = ({
  args,
  status,
  handler,
  trips,
  selectedTripId,
}: EditTripsProps) => {
  // const { trips, selectedTripId } = useTrips();
  const [selectedPlaceIds, setSelectedPlaceIds] = useState<Set<string>>(
    new Set(),
  );
  const handleCheck = (placeId: string, checked: boolean) => {
    setSelectedPlaceIds((prev) => {
      const newSet = new Set(prev);
      if (checked) {
        newSet.add(placeId);
      } else {
        newSet.delete(placeId);
      }
      return newSet;
    });
  };

  function getDelta(arr1: Place[], arr2: Place[]) {
    const arr2Ids = new Set(arr2.map((item) => item.id));
    const arr1Ids = new Set(arr1.map((item) => item.id));
    const onlyInArr1 = arr1.filter((item) => !arr2Ids.has(item.id));
    const onlyInArr2 = arr2.filter((item) => !arr1Ids.has(item.id));
    return [...onlyInArr1, ...onlyInArr2];
  }
  return (
    <div className="space-y-4 w-full bg-secondary p-6 rounded-lg">
      {Array.isArray(args.trips) &&
        args.trips.length > 0 &&
        args.trips.map(
          (trip: Trip) =>
            trip.id &&
            trip.places &&
            Array.isArray(trip.places) && (
              <div key={trip.id} className="flex flex-col gap-4">
                <h1 className="text-sm">Do you want to save these changes?</h1>
                <hr className="my-2" />
                <div className="flex flex-col gap-4">
                  <h2 className="text-lg font-bold">{trip.name}</h2>
                  {getDelta(
                    trip.places,
                    trips.find((t) => t.id === selectedTripId)?.places || [],
                  ).map((place) => (
                    <PlaceCard
                      key={place.id}
                      place={place}
                      onCheck={(checked) =>
                        handleCheck(place.id, checked as boolean)
                      }
                    />
                  ))}
                </div>
              </div>
            ),
        )}
      <ActionButtons
        status={status}
        handler={handler}
        placeIds={args.trips?.map((trip: Trip) =>
          trip.places?.map((place: Place) => place.id),
        )}
        selectedPlaceIds={selectedPlaceIds}
        approve={
          <>
            <Save className="w-4 h-4 mr-2" /> Save
          </>
        }
        reject={
          <>
            <X className="w-4 h-4 mr-2" /> Cancel
          </>
        }
        type="edit"
        setSelectedPlaceIds={setSelectedPlaceIds}
      />
    </div>
  );
};
