using System;

​

namespace Test {

    //Interfaces : contracts for classes to be used for compoisiton

    public interface IEat<T>{

        //set the food level

        int Consume(T Item);

    }

    public interface ISpecies{

        void Draw();

    }

    public enum Health {

        Sick, ok, good, healthy 

    }

    public interface ICharacterState {

        Health CharacterState {get; set;}

    }

    public interface IHealthValue{

        int HealthLevel(int value);

    }

    //classes for componsition

    public class Mamal : ISpecies{

        public void Draw(){

            Console.WriteLine("I am a mamal");

        }

    }

    public class Reptile : ISpecies {

        public void Draw() {

            Console.WriteLine("I am a reptile");    

        }

    }

    public class MyHealth : IHealthValue{

        public virtual int HealthLevel(int value){

            if(value > 80){

                return 80;

            } else if(value > 50){

                return 50;

            } else if (value > 20){

                return 20;  

            } else {

                return 5;

            }

        }

    }

    public class StateOfCharacter : MyHealth, ICharacterState {

        public Health CharacterState {get; set;}

    }

    public class Food {

        public int rejectLevel {get; set;}

        public int consumeLevel {get; set;}

        public string name {get; set;}

        public int sugarLevel {get; set;}

        public int fatLevel {get; set;}

        public int vitaminLevel {get; set;}

    }

    public class Apple: Food {

        public Apple(){

            this.rejectLevel = 1;

            this.consumeLevel = 2;

            this.name = "Apple";

            this.sugarLevel = 10;

            this.fatLevel = 0;

            this.vitaminLevel = 15;

        }

    }

    public class Cake : Food {

        public Cake(){

            this.rejectLevel = 0;

            this.consumeLevel = 10;

            this.name = "Cake";

            this.sugarLevel = 60;

            this.fatLevel = 39;

            this.vitaminLevel = 3;

        }

    }

    public class Eat : IEat<Food>

    {

        public int Consume(Food Item){

            Console.WriteLine("Yumm.... {0}", Item.name);

            return Item.consumeLevel;

        }

    }

    public class Reject : IEat<Food> {

        public int Consume(Food Item){

            Console.WriteLine("Yuck... I hate {0}", Item.name);

            return Item.rejectLevel;

        }

    }

    //abstract class that contains all of the methods

    public abstract class Character : IHealthValue, ISpecies {

        private readonly IHealthValue _healthValue;

        private readonly ICharacterState _characterState;

        private readonly ISpecies _speicies;

        public Character(IHealthValue healthValue, ICharacterState characterState, ISpecies species){

            _healthValue = healthValue;

            _characterState = characterState;

            _speicies = species;

        }

        public void Draw (){

            _speicies.Draw();   

        }

        public int HealthLevel(int value){

            return _healthValue.HealthLevel(value); 

        }

    }

    //concrete class that contains all of the functionality

    public class Bear : Character {

        public Bear() : base(

            new MyHealth(),

            new StateOfCharacter(),

            new Mamal()

        ) {

        }

    }

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Hello World");

            Bear teddy = new Bear();

            teddy.Draw();

            Console.WriteLine(teddy.HealthLevel(80));

        }

    }

}

​