using System;
using Server;
using System.Collections;

namespace Server.Items
{
	/// <summary>
	/// Attack faster as you swing with both weapons.
	/// </summary>
	public class DualWield : WeaponAbility
	{
		private static Hashtable m_Registry = new Hashtable();
		public static Hashtable Registry { get { return m_Registry; } }

		public DualWield()
		{
		}

		public override int BaseMana { get { return 30; } }

		public override bool CheckSkills( Mobile from )
		{
			if( GetSkill( from, SkillName.Ninjitsu ) < 50.0 )
			{
				from.SendLocalizedMessage( 1063352, "50" ); // You need ~1_SKILL_REQUIREMENT~ Ninjitsu skill to perform that attack!
				return false;
			}

			return base.CheckSkills( from );
		}

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

			if( Registry.Contains( attacker ) )
			{
				DualWieldTimer existingtimer = (DualWieldTimer)Registry[attacker];
				existingtimer.Stop();
				Registry.Remove( attacker );
			}

			ClearCurrentAbility( attacker );

			attacker.SendLocalizedMessage( 1063362 ); // You dually wield for increased speed!

			attacker.FixedParticles( 0x3779, 1, 15, 0x7F6, 0x3E8, 3, EffectLayer.LeftHand );

			Timer t = new DualWieldTimer( attacker, (int)(20.0 + 3.0 * (attacker.Skills[SkillName.Ninjitsu].Value - 50.0) / 7.0) );	//20-50 % increase

			t.Start();
			Registry.Add( attacker, t );
		}

		public class DualWieldTimer : Timer
		{
			private Mobile m_Owner;
			private int m_BonusSwingSpeed;

			public int BonusSwingSpeed { get { return m_BonusSwingSpeed; } }

			public DualWieldTimer( Mobile owner, int bonusSwingSpeed )
				: base( TimeSpan.FromSeconds( 6.0 ) )
			{
				m_Owner = owner;
				m_BonusSwingSpeed = bonusSwingSpeed;
				Priority = TimerPriority.FiftyMS;
			}

			protected override void OnTick()
			{
				Registry.Remove( m_Owner );
			}
		}
	}
}