Pegasus/src/controllers/AddFlightController.java

package controllers;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.control.*;
import models.Flight;
import models.Flights;
import models.Pilot;
import models.Pilots;
import utils.XMLHelper;


import java.time.Duration;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
import java.util.ArrayList;
import java.util.List;

public class AddFlightController {
    private Flights flights;
    
    private DateTimeFormatter timeFormatter = DateTimeFormatter.ofPattern("HH:mm");

    public AddFlightController() {
        loadFlights();
    }

    public ObservableList<Pilot> loadPilots() {
        ObservableList<Pilot> pilotList = FXCollections.observableArrayList();
        Pilots pilots = (Pilots) XMLHelper.loadFromXML("pilots.xml");
        if (pilots != null) {
            List<Pilot> pilotEntries = pilots.getPilots();
            pilotList.addAll(pilotEntries);
        }
        return pilotList;
    }

    public void saveFlight(Flight flight){
        if(flights == null){
            flights = new Flights(new ArrayList<>());
        }

        boolean flightExists = false;
        for (int i = 0; i < flights.getFlights().size(); i++) {
            if (flights.getFlights().get(i).getMuster().equals(flight.getMuster())) {
                flights.getFlights().set(i, flight);
                flightExists = true;
                break;
            }
        }

        if (!flightExists) {
            flights.getFlights().add(flight);
        }

        XMLHelper.saveToXML(flights, "flights.xml");
    }

    public double calculateFlightDuration(String abflugzeit, String ankunftszeit) throws DateTimeParseException {
        LocalTime start = LocalTime.parse(abflugzeit, timeFormatter);
        LocalTime end = LocalTime.parse(ankunftszeit, timeFormatter);
        return (double) Duration.between(start, end).toMinutes() / 60;
    }

    public boolean isValidTime(String time) {
        try {
            LocalTime.parse(time, timeFormatter);
            return true;
        } catch (DateTimeParseException e) {
            return false;
        }
    }

    public void setErrorStyle(Control field) {
        field.setStyle("-fx-border-color: red;");
    }

    
    public void showAlert(String title, String message) {
        Alert alert = new Alert(Alert.AlertType.ERROR);
        alert.setTitle(title);
        alert.setHeaderText(null);
        alert.setContentText(message);
        alert.showAndWait();
    }

    public void loadFlights() {
        flights = (Flights) XMLHelper.loadFromXML("flights.xml");
    }
}