using System;
using System.Collections.Generic;
using System.Linq;

namespace GameCreatures.Models
{
    public class Commander
    {
        private readonly List<Creature> army;
        private string name;


        public Commander(string name, List<Creature> army)
        {
            this.Name = name;
            this.army = army;
            if (army == null)
            {
                throw new ArgumentNullException("Please provide a value!");
            }
        }

        public string Name
        {
            get
            {
                return this.name;
            }
            set
            {
                if (value == null)
                {
                    throw new ArgumentNullException("Please provida a name!");
                }
                else
                {
                    this.name = value;
                }
            }
        }

        public int ArmySize
        {
            get
            {
                return this.army.Count();
            }

        }

        public void AttackAtPosition(Commander enemy, int attackerIndex, int targetIndex)
        {
            this.army[attackerIndex].Attack(enemy.army[targetIndex]);
            if (enemy.army[targetIndex].HealthPoints <= 0)
            {
                enemy.army.RemoveAt(targetIndex);
            }
        }

        public void AutoAttack(Commander enemy)
        {
            List<Creature> attachers = new List<Creature>();

            if (enemy.army.Count != 1)
            {

                attachers = this.army.OrderByDescending(a => a.CalculateActualDamage(a.FindBestTarget(enemy.army))).ToList();
                attachers[0].AutoAttack(enemy.army);
            }
            else
            {
                attachers = this.army.OrderByDescending(a => a.CalculateActualDamage(enemy.army[0])).ToList();
                attachers[0].Attack(enemy.army[0]);
                if (enemy.army[0].HealthPoints <= 0)
                {
                    enemy.army.Remove(enemy.army[0]);
                }
            }
        }
    }
}