#region References
using System.Collections.Generic;

using Server.Multis;
#endregion

namespace Server.Items
{
	public enum AddonFitResult
	{
		Valid,
		Blocked,
		NotInHouse,
		DoorTooClose,
		NoWall,
		DoorsNotClosed
	}

	public interface IAddon : IEntity, IChopable
	{
		Item Deed { get; }

		bool CouldFit(IPoint3D p, Map map);
	}

	public abstract class BaseAddon : Item, IChopable, IAddon
	{
		#region Mondain's Legacy
		private CraftResource m_Resource;

		[CommandProperty(AccessLevel.Decorator)]
		public CraftResource Resource
		{
			get { return m_Resource; }
			set
			{
				if (m_Resource != value)
				{
					m_Resource = value;
					Hue = CraftResources.GetHue(m_Resource);

					InvalidateProperties();
				}
			}
		}
		#endregion

		private List<AddonComponent> m_Components;

		public void AddComponent(AddonComponent c, int x, int y, int z)
		{
			if (Deleted)
				return;

			m_Components.Add(c);

			c.Addon = this;
			c.Offset = new Point3D(x, y, z);
			c.MoveToWorld(new Point3D(X + x, Y + y, Z + z), Map);
		}

		public BaseAddon()
			: base(1)
		{
			Movable = false;
			Visible = false;

			m_Components = new List<AddonComponent>();
		}

		public void ApplyLight(LightType light)
		{
			Light = light;

			foreach (var c in Components)
			{
				c.Light = light;
			}
		}

		public virtual bool RetainDeedHue {  get  { return Hue != 0 && CraftResources.GetHue(Resource) != Hue; } }

		public virtual void OnChop(Mobile from)
		{
			var house = BaseHouse.FindHouseAt(this);

			#region High Seas
			var boat = BaseBoat.FindBoatAt(from, from.Map);
			if (boat != null && boat is BaseGalleon)
			{
				((BaseGalleon)boat).OnChop(this, from);
				return;
			}
			#endregion

			if (house != null && (house.IsOwner(from) || (house.Addons.ContainsKey(this) && house.Addons[this] == from)))
			{
				Effects.PlaySound(GetWorldLocation(), Map, 0x3B3);
				from.SendLocalizedMessage(500461); // You destroy the item.

				var hue = 0;

				if (RetainDeedHue)
				{
					for (var i = 0; hue == 0 && i < m_Components.Count; ++i)
					{
						var c = m_Components[i];

						if (c.Hue != 0)
							hue = c.Hue;
					}
				}

				Delete();

				house.Addons.Remove(this);

				var deed = GetDeed();

				if (deed != null)
				{
					if (RetainDeedHue)
						deed.Hue = hue;
					else
						deed.Hue = 0;

                    deed.IsReDeed = true;

					from.AddToBackpack(deed);
				}
			}
			else
			{
				from.SendLocalizedMessage(1113134); // You can only redeed items in your own house!
			}
		}

		public virtual BaseAddonDeed Deed { get { return null; } }

		public virtual BaseAddonDeed GetDeed()
		{
			var deed = Deed;

			if (deed != null)
			{
				deed.Resource = Resource;
			}

			return deed;
		}

		Item IAddon.Deed { get { return GetDeed(); } }

		public List<AddonComponent> Components { get { return m_Components; } }

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

		public bool CouldFit(IPoint3D p, Map map)
		{
			BaseHouse h = null;
			return (CouldFit(p, map, null, ref h) == AddonFitResult.Valid);
		}

		public virtual AddonFitResult CouldFit(IPoint3D p, Map map, Mobile from, ref BaseHouse house)
		{
			if (Deleted)
				return AddonFitResult.Blocked;

            foreach (var c in m_Components)
			{
				var p3D = new Point3D(p.X + c.Offset.X, p.Y + c.Offset.Y, p.Z + c.Offset.Z);

				if (!map.CanFit(p3D.X, p3D.Y, p3D.Z, c.ItemData.Height, false, true, (c.Z == 0)))
					return AddonFitResult.Blocked;
				if (!CheckHouse(from, p3D, map, c.ItemData.Height, ref house))
					return AddonFitResult.NotInHouse;

				if (c.NeedsWall)
				{
					var wall = c.WallPosition;

					if (!IsWall(p3D.X + wall.X, p3D.Y + wall.Y, p3D.Z + wall.Z, map))
						return AddonFitResult.NoWall;
				}
			}

			if (house != null)
			{
				var doors = house.Doors;

				for (var i = 0; i < doors.Count; ++i)
				{
					var door = doors[i] as BaseDoor;

					var doorLoc = door.GetWorldLocation();
					var doorHeight = door.ItemData.CalcHeight;

					foreach (var c in m_Components)
					{
						var addonLoc = new Point3D(p.X + c.Offset.X, p.Y + c.Offset.Y, p.Z + c.Offset.Z);
						var addonHeight = c.ItemData.CalcHeight;

						if (Utility.InRange(doorLoc, addonLoc, 1) && (addonLoc.Z == doorLoc.Z ||
																	  ((addonLoc.Z + addonHeight) > doorLoc.Z && (doorLoc.Z + doorHeight) > addonLoc.Z)))
							return AddonFitResult.DoorTooClose;
					}
				}
			}

			return AddonFitResult.Valid;
		}

		public static bool CheckHouse(Mobile from, Point3D p, Map map, int height, ref BaseHouse house)
		{
			house = BaseHouse.FindHouseAt(p, map, height);

			if (house == null || (from != null && !house.IsCoOwner(from)))
				return false;

			return true;
		}

		public static bool IsWall(int x, int y, int z, Map map)
		{
			if (map == null)
				return false;

			var tiles = map.Tiles.GetStaticTiles(x, y, true);

			for (var i = 0; i < tiles.Length; ++i)
			{
				var t = tiles[i];
				var id = TileData.ItemTable[t.ID & TileData.MaxItemValue];

				if ((id.Flags & TileFlag.Wall) != 0 && (z + 16) > t.Z && (t.Z + t.Height) > z)
					return true;
			}

			return false;
		}

		public virtual void OnComponentLoaded(AddonComponent c)
		{ }

		public virtual void OnComponentUsed(AddonComponent c, Mobile from)
		{ }

		public override void OnLocationChange(Point3D oldLoc)
		{
			if (Deleted)
				return;

			foreach (var c in m_Components)
				c.Location = new Point3D(X + c.Offset.X, Y + c.Offset.Y, Z + c.Offset.Z);
		}

		public override void OnMapChange()
		{
			if (Deleted)
				return;

			foreach (var c in m_Components)
				c.Map = Map;
		}

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

			foreach (var c in m_Components)
				c.Delete();
		}

		public virtual bool ShareHue { get { return true; } }

		[Hue, CommandProperty(AccessLevel.Decorator)]
		public override int Hue
		{
			get { return base.Hue; }
			set
			{
				if (base.Hue != value)
				{
					base.Hue = value;

					if (!Deleted && ShareHue && m_Components != null)
					{
						foreach (var c in m_Components)
							c.Hue = value;
					}
				}
			}
		}

		public virtual void UpdateProperties()
		{
			InvalidateProperties();

			foreach (var o in Components)
			{
				o.InvalidateProperties();
			}
		}

		public virtual void GetProperties(ObjectPropertyList list, AddonComponent c)
		{
		}

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

			writer.Write(2); // version

			writer.Write((int)m_Resource);

			writer.WriteItemList(m_Components);
		}

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

			var version = reader.ReadInt();

			switch (version)
			{
				case 2:
					m_Resource = (CraftResource)reader.ReadInt();
					goto case 1;
				case 1:
				case 0:
				{
					m_Components = reader.ReadStrongItemList<AddonComponent>();
					break;
				}
			}

			if (version < 1 && Weight == 0)
				Weight = -1;
		}
	}
}
