using RPGLibrary.Abstraction.Services;
using RPGLibrary.Command;

namespace RPGLibrary.Implementation.Command
{
  public class AttackCommand : ICommand<Character>
  {
    private readonly Character[] _target;
    private readonly StrengthAttackData _attackData;
    private readonly IDamageCalculator<Character, StrengthAttackData> _damageCalculator;

    public AttackCommand(Character[] target, StrengthAttackData attackData, IDamageCalculator<Character, StrengthAttackData> damageCalculator)
    {
      _target = target;
      _attackData = attackData;
      _damageCalculator = damageCalculator;
    }


    public async IAsyncEnumerable<Character> Execute()

    {
      foreach (var character in _target)
      {
        var damage = _damageCalculator.Calculate(character, _attackData);
        var newCurrentHP = new HP(character.HP.Value - damage, character.HP.Maximum);
        yield return character.With(newCurrentHP);
      }
    }
  }

}