using Godot;
using Zennysoft.Ma.Adapter.Entity;

namespace Zennysoft.Ma.Adapter
{
  public static class DamageCalculator
  {
    public static int CalculateDamage(AttackData damage, double defense, ElementalResistanceSet elementalResistanceSet)
    {
      var calculatedDamage = damage.BaseDamage;
      if (!damage.IgnoreDefense)
        calculatedDamage = CalculateDefenseResistance(calculatedDamage, defense);
      if (!damage.IgnoreElementalResistance)
        calculatedDamage = CalculateElementalResistance(calculatedDamage, elementalResistanceSet.ElementalResistance[damage.ElementType]);

      return Mathf.Max(1, calculatedDamage);
    }

    private static int CalculateDefenseResistance(int incomingDamage, double defense)
    {
      var result = incomingDamage - (int)(incomingDamage * (defense / 100));
      return result;
    }

    private static int CalculateElementalResistance(
      int incomingDamage,
      double elementalResistance)
    {
      var result = incomingDamage - (int)(incomingDamage * (elementalResistance / 100));
      return result;
    }
  }
}