using System;
using System.Collections.Generic;
using Server;
using Server.Items;
using Server.Mobiles;
using Server.Spells;
using Server.Spells.Necromancy;
using Server.Spells.Ninjitsu;

namespace Server.Spells.Ninjitsu
{
	public class MirrorImage : NinjaSpell
	{
		private static Dictionary<Mobile, int> m_CloneCount = new Dictionary<Mobile, int>();

		public static bool HasClone( Mobile m )
		{
			return m_CloneCount.ContainsKey( m );
		}

		public static void AddClone( Mobile m )
		{
			if ( m == null )
				return;

			if ( m_CloneCount.ContainsKey( m ) )
				m_CloneCount[m]++;
			else
				m_CloneCount[m] = 1;
		}

		public static void RemoveClone( Mobile m )
		{
			if ( m == null )
				return;

			if ( m_CloneCount.ContainsKey( m ) )
			{
				m_CloneCount[m]--;

				if ( m_CloneCount[m] == 0 )
					m_CloneCount.Remove( m );
			}
		}

		private static SpellInfo m_Info = new SpellInfo(
			"Mirror Image", null,
			-1,
			9002
			);

		public override TimeSpan CastDelayBase { get { return TimeSpan.FromSeconds( 1.5 ); } }

		public override double RequiredSkill{ get{ return Core.ML ? 20.0 : 40.0; } }
		public override int RequiredMana{ get{ return 10; } }

		public override bool BlockedByAnimalForm{ get{ return false; } }

		public MirrorImage( Mobile caster, Item scroll ) : base( caster, scroll, m_Info )
		{
		}

		public override bool CheckCast()
		{
			if ( Caster.Mounted )
			{
				Caster.SendLocalizedMessage( 1063132 ); // You cannot use this ability while mounted.
				return false;
			}
			else if ( (Caster.Followers + 1) > Caster.FollowersMax )
			{
				Caster.SendLocalizedMessage( 1063133 ); // You cannot summon a mirror image because you have too many followers.
				return false;
			}
			else if( TransformationSpellHelper.UnderTransformation( Caster, typeof( HorrificBeastSpell ) ) )
			{
				Caster.SendLocalizedMessage( 1061091 ); // You cannot cast that spell in this form.
				return false;
			}

			return base.CheckCast();
		}

		public override bool CheckDisturb( DisturbType type, bool firstCircle, bool resistable )
		{
			return false;
		}

		public override void OnBeginCast()
		{
			base.OnBeginCast();

			Caster.SendLocalizedMessage( 1063134 ); // You begin to summon a mirror image of yourself.
		}

		public override void OnCast()
		{
			if ( Caster.Mounted )
			{
				Caster.SendLocalizedMessage( 1063132 ); // You cannot use this ability while mounted.
			}
			else if ( (Caster.Followers + 1) > Caster.FollowersMax )
			{
				Caster.SendLocalizedMessage( 1063133 ); // You cannot summon a mirror image because you have too many followers.
			}
			else if( TransformationSpellHelper.UnderTransformation( Caster, typeof( HorrificBeastSpell ) ) )
			{
				Caster.SendLocalizedMessage( 1061091 ); // You cannot cast that spell in this form.
			}
			else if ( CheckSequence() )
			{
				Caster.FixedParticles( 0x376A, 1, 14, 0x13B5, EffectLayer.Waist );
				Caster.PlaySound( 0x511 );

				new Clone( Caster ).MoveToWorld( Caster.Location, Caster.Map );
			}

			FinishSequence();
		}
	}
}

namespace Server.Mobiles
{
	public class Clone : BaseCreature
	{
		private Mobile m_Caster;

		public Clone( Mobile caster ) : base( AIType.AI_Melee, FightMode.None, 10, 1, 0.2, 0.4 )
		{
			m_Caster = caster;

			Body = caster.Body;

			Hue = caster.Hue;
			Female = caster.Female;

			Name = caster.Name;
			NameHue = caster.NameHue;

			Title = caster.Title;
			Kills = caster.Kills;

			HairItemID = caster.HairItemID;
			HairHue = caster.HairHue;

			FacialHairItemID = caster.FacialHairItemID;
			FacialHairHue = caster.FacialHairHue;

			for ( int i = 0; i < caster.Skills.Length; ++i )
			{
				Skills[i].Base = caster.Skills[i].Base;
				Skills[i].Cap = caster.Skills[i].Cap;
			}

			for( int i = 0; i < caster.Items.Count; i++ )
			{
				AddItem( CloneItem( caster.Items[i] ) );
			}

			Warmode = true;

			Summoned = true;
			SummonMaster = caster;

			ControlOrder = OrderType.Follow;
			ControlTarget = caster;

			TimeSpan duration = TimeSpan.FromSeconds( 30 + caster.Skills.Ninjitsu.Fixed / 40 );

			new UnsummonTimer( caster, this, duration ).Start();
			SummonEnd = DateTime.UtcNow + duration;

			MirrorImage.AddClone( m_Caster );
		}

		protected override BaseAI ForcedAI { get { return new CloneAI( this ); } }

		public override bool IsHumanInTown() { return false; }

		private Item CloneItem( Item item )
		{
			Item newItem = new Item( item.ItemID );
			newItem.Hue = item.Hue;
			newItem.Layer = item.Layer;

			return newItem;
		}

		public override void OnDamage( int amount, Mobile from, bool willKill )
		{
			Delete();
		}

		public override bool DeleteCorpseOnDeath { get { return true; } }

		public override void OnDelete()
		{
			Effects.SendLocationParticles( EffectItem.Create( Location, Map, EffectItem.DefaultDuration ), 0x3728, 10, 15, 5042 );

			base.OnDelete();
		}

		public override void OnAfterDelete()
		{
			MirrorImage.RemoveClone( m_Caster );
			base.OnAfterDelete();
		}

		public override bool IsDispellable { get { return false; } }
		public override bool Commandable { get { return false; } }

		public Clone( Serial serial ) : base( serial )
		{
		}

		public override void Serialize( GenericWriter writer )
		{
			base.Serialize( writer );

			writer.WriteEncodedInt( 0 ); // version

			writer.Write( m_Caster );
		}

		public override void Deserialize( GenericReader reader )
		{
			base.Deserialize( reader );

			int version = reader.ReadEncodedInt();

			m_Caster = reader.ReadMobile();

			MirrorImage.AddClone( m_Caster );
		}
	}
}


namespace Server.Mobiles
{
	public class CloneAI : BaseAI
	{
		public CloneAI( Clone m ) : base ( m )
		{
			m.CurrentSpeed = m.ActiveSpeed;
		}

		public override bool Think()
		{
			// Clones only follow their owners
			Mobile master = m_Mobile.SummonMaster;

			if ( master != null && master.Map == m_Mobile.Map && master.InRange( m_Mobile, m_Mobile.RangePerception ) )
			{
				int iCurrDist = (int)m_Mobile.GetDistanceToSqrt( master );
				bool bRun = (iCurrDist > 5);

				WalkMobileRange( master, 2, bRun, 0, 1 );
			}
			else
				WalkRandom( 2, 2, 1 );

			return true;
		}
		
		public override bool CanDetectHidden { get { return false; } }
	}
}