import java.util.Arrays;
//David Karasz 01151424
public class Bsp08 {

	public static void main(String[] args) {

		Train t1 = new Train ("ICE1", "Salzburg", "Linz", new int[] {20, 30, 50, 36, 42});
		Train t2 = new Train ("RJ0", "Linz", "Wien", new int[] {50, 30, 10});
		Train[] trains = {
		  t1,
		  t2,
		  new Train ("NJ1", "Klagenfurt", "Wien", new int[] {60, 60, 20}),
		};

		//Direktverbindung
		Train[] route1 = oneStopTrip(trains, "Linz", "Wien");
		for (Train tr: route1)
		    System.out.println (tr);
		// RJ0: From Linz, To Wien, Total seats: 90, Reserved seats: 0

		//Umstieg
		Train[] route2 = oneStopTrip(trains, "Salzburg", "Wien");
		for (Train tr: route2)
		    System.out.println (tr);
		// ICE1: From Salzburg, To Linz, Total seats: 178, Reserved seats: 0
		// RJ0: From Linz, To Wien, Total seats: 90, Reserved seats: 0


		//keine zuge vorhanden; gibt leeres Array zuruck {Exception fix}
		Train[] trains2 = {};
		Train[] route3 = oneStopTrip(trains2, "Salzburg", "Wien");
		for (Train tr: route3)
		    System.out.println (tr);


	}

	public static Train[] oneStopTrip (Train[] trains, String fromPlace, String toPlace) {
		Train[] reTrains = new Train[2];
		Train[] direktVerbin = new Train[1];

		//Check Parameters
		if(trains == null || fromPlace==null || toPlace==null){
			return new Train[] {};
		}

		//suche nach Direktverbindung
		for(int i = 0; i < trains.length; i++){
			if(trains[i].getDeparture().equals(fromPlace) && trains[i].getDestination().equals(toPlace)){
				direktVerbin[0] = trains[i];
				return direktVerbin;
			}
		}

		//suche nach Verbidnung mit nur einen Zwischenumstieg
		for(int i = 0; i < trains.length; i++) {
			//Suche zug der am gesuchten Ort losfährt
			if(trains[i].getDeparture().equals(fromPlace)) {
				//Suche Anschlusszug
				for(int j = 0; j < trains.length; j++){
					if(trains[i].getDestination().equals(trains[j].getDeparture()) && trains[j].getDestination().equals(toPlace)){
						reTrains[0] = trains[i];
						reTrains[1] = trains[j];
						return reTrains;
					}
				}
			}
		}
		return reTrains;
	}

}