using System;
using System.Collections.Generic;
using System.Linq;
using Server.Spells;

namespace Server.Items
{
  /// <summary>
  ///   A godsend to a warrior surrounded, the Whirlwind Attack allows the fighter to strike at all nearby targets in one mighty
  ///   spinning swing.
  /// </summary>
  public class WhirlwindAttack : WeaponAbility
  {
    public override int BaseMana => 15;

    public override void OnHit(Mobile attacker, Mobile defender, int damage)
    {
      if (!Validate(attacker))
        return;

      ClearCurrentAbility(attacker);

      Map map = attacker.Map;

      if (map == null)
        return;

      if (!(attacker.Weapon is BaseWeapon weapon))
        return;

      if (!CheckMana(attacker, true))
        return;

      attacker.FixedEffect(0x3728, 10, 15);
      attacker.PlaySound(0x2A1);

      List<Mobile> targets = attacker.GetMobilesInRange(1).Where(m =>
        m?.Deleted == false && m != defender && m != attacker && SpellHelper.ValidIndirectTarget(attacker, m) &&
        m.Map == attacker.Map && m.Alive && attacker.CanSee(m) && attacker.CanBeHarmful(m) &&
        attacker.InRange(m, weapon.MaxRange) && attacker.InLOS(m)).ToList();

      if (targets.Count <= 0)
        return;

      double bushido = attacker.Skills.Bushido.Value;
      double damageBonus = 1.0 + Math.Pow(targets.Count * bushido / 60, 2) / 100;

      if (damageBonus > 2.0)
        damageBonus = 2.0;

      attacker.RevealingAction();

      for (int i = 0; i < targets.Count; ++i)
      {
        Mobile m = targets[i];

        attacker.SendLocalizedMessage(1060161); // The whirling attack strikes a target!
        m.SendLocalizedMessage(1060162); // You are struck by the whirling attack and take damage!

        weapon.OnHit(attacker, m, damageBonus);
      }
    }
  }
}