/************ **obstSammlung.cs ********************/

using System;
using System.Reflection;
using System.Collections.Generic;

namespace LinuxMagazineObstSammlung
{
  /***********************************************/

  public abstract class Obst : IComparable<Obst>
  {
    public Obst(double anfangsgroesse) {
      this.Anfangsgroesse = anfangsgroesse;
    }
    
    public double Anfangsgroesse {
      get {
	return anfangsgroesse_;
      }

      protected set {
        if(value > 0.0) {
	  anfangsgroesse_ = value;
	}
      }
    }

    public double Groesse {
      get {
	return Math.Round(anfangsgroesse_ + 0.1 * alter_, 2);
      }
    }

    public double Alter {
      get {
	return alter_;
      }

      set {
	if(value >= 0.0) {
	  alter_ = value;
	}
      }
    }

    public int CompareTo(Obst o){
      return o.Groesse.CompareTo(this.Groesse);
    }

    public static bool operator > (Obst o1, Obst o2) {
      return o1.Groesse > o2.Groesse;
    } 

    public static bool operator < (Obst o1, Obst o2) {
      return o1.Groesse < o2.Groesse;
    } 

    public override string ToString(){
      Type t = this.GetType();
      string result = "Ich bin Obst vom Typ " + t.Name + " und der Groesse " + this.Groesse;
      return result;
    }

    private double anfangsgroesse_ = 1.0;
    private double alter_ = 0.0;
  }

  /***********************************************/

  public class Apfel: Obst 
  {
    public Apfel()
      :base(2.0)
      { /* nothing */ }

    public uint ZahlDerKerne 
    { get; set; }
  }

  /***********************************************/

  public class Birne: Obst
  {
    public Birne()
      :base(2.2)
      { /* nothing */ }

    public double StielLaenge {
      get {
	return stielLaenge_;
      }
      set {
	if(value >= 0.0) stielLaenge_ = value;
      }
    }

    private double stielLaenge_ = 1.0;
  }

  /***********************************************/

  class ObstDrucker {
    public ObstDrucker(){
      Random rg = new Random();
      
      for(uint i=0; i<4; i++){
	if(i%2 == 0){
	  Apfel apfel = new Apfel();
	  apfel.Alter = 50.0 * rg.NextDouble();
	  apfel.ZahlDerKerne = (uint)rg.Next(10); // Maximal 9 Kerne
	  obstSammlung.Add(apfel);
	}
	else {
	  Birne birne = new Birne();
	  birne.Alter = 50.0 * rg.NextDouble();
	  birne.StielLaenge = rg.NextDouble(); // Maximal 1 cm
	  obstSammlung.Add(birne);
	}
      }
    }

    public void sortiereObst(){
      obstSammlung.Sort();
    }

    public void print(){
      foreach(Obst o in obstSammlung) {
	Console.WriteLine(o.ToString());
      }
    }

    private List<Obst> obstSammlung = new List<Obst>();
  }
}

/****************************************************************/