import java.io.*;
import java.util.*;

public class Meny implements MenyInterface{
protected Savanne<Dyr> savanne;

  Meny(){
    skrivMeny();
  }

  public void skrivMeny(){
    while(true){
      System.out.println("1: Les inn Savanne fra fil.");
      System.out.println("2: Print Savanne.");
      System.out.println("3: Finn loven.");
      System.out.println(" ");
      System.out.println("0: Exit");

      taValg();
    }

  }

  public int taInput(){
    Scanner s = new Scanner(System.in);
    int valg = s.nextInt();

    return valg;
  }

  public void taValg(){
    int valg = taInput();

    switch (valg){
      case 1:
        lesFil();
        break;
      case 2:
        printSavanne();
        break;
      case 3:
        finnLove();
        break;
      case 0:
        System.out.println("Avslutter...");
        System.exit(0);
      default:
        System.out.println("Ugldig input.");
    }

  }

  public void lesFil(){
    System.out.println("Hvilken fil skal leses?");
    Scanner in = new Scanner(System.in);
    LesFil lf = new LesFil(in.nextLine());

    try{
      savanne = lf.lesFil();
    }catch (FileNotFoundException e){
      System.out.println("Filen finnes ikke. Avslutter...");
      System.exit(0);
    }
  }

  public void printSavanne(){
    savanne.printSavanne();
  }

  public void finnLove(){
    savanne.finnLove();
  }

}