using System;
using System.Collections.Generic;
using Server.Items;
using Server.Mobiles;
using Server.Network;

namespace Server.Engines.MLQuests.Items
{
	public abstract class QuestGiverItem : Item, IQuestGiver
	{
		private List<MLQuest> m_MLQuests;

		public List<MLQuest> MLQuests
		{
			get
			{
				if ( m_MLQuests == null )
				{
					m_MLQuests = MLQuestSystem.FindQuestList( GetType() );

					if ( m_MLQuests == null )
						m_MLQuests = MLQuestSystem.EmptyList;
				}

				return m_MLQuests;
			}
		}

		public bool CanGiveMLQuest => ( MLQuests.Count != 0 );

		public QuestGiverItem( int itemId )
			: base( itemId )
		{
		}

		public override bool Nontransferable => true;

		public override void AddNameProperties( ObjectPropertyList list )
		{
			base.AddNameProperties( list );

			AddQuestItemProperty( list );

			if ( CanGiveMLQuest )
				list.Add( 1072269 ); // Quest Giver
		}

		public override void OnDoubleClick( Mobile from )
		{
			if ( !from.InRange( GetWorldLocation(), 2 ) )
				from.LocalOverheadMessage( MessageType.Regular, 0x3B2, 1019045 ); // I can't reach that.
			else if ( !IsChildOf( from.Backpack ) )
				from.SendLocalizedMessage( 1042593 ); // That is not in your backpack.
			else if ( MLQuestSystem.Enabled && CanGiveMLQuest && from is PlayerMobile mobile )
				MLQuestSystem.OnDoubleClick( this, mobile );
		}

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

			if ( MLQuestSystem.Enabled )
				MLQuestSystem.HandleDeletion( this );
		}

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

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

			writer.Write( (int)0 ); // version
		}

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

			int version = reader.ReadInt();
		}
	}

	public abstract class TransientQuestGiverItem : TransientItem, IQuestGiver
	{
		private List<MLQuest> m_MLQuests;

		public List<MLQuest> MLQuests
		{
			get
			{
				if ( m_MLQuests == null )
				{
					m_MLQuests = MLQuestSystem.FindQuestList( GetType() );

					if ( m_MLQuests == null )
						m_MLQuests = MLQuestSystem.EmptyList;
				}

				return m_MLQuests;
			}
		}

		public bool CanGiveMLQuest => ( MLQuests.Count != 0 );

		public TransientQuestGiverItem( int itemId, TimeSpan lifeSpan )
			: base( itemId, lifeSpan )
		{
		}

		public override bool Nontransferable => true;

		public override void HandleInvalidTransfer( Mobile from )
		{
		}

		public override void AddNameProperties( ObjectPropertyList list )
		{
			base.AddNameProperties( list );

			AddQuestItemProperty( list );

			if ( CanGiveMLQuest )
				list.Add( 1072269 ); // Quest Giver
		}

		public override void OnDoubleClick( Mobile from )
		{
			if ( !from.InRange( GetWorldLocation(), 2 ) )
				from.LocalOverheadMessage( MessageType.Regular, 0x3B2, 1019045 ); // I can't reach that.
			else if ( !IsChildOf( from.Backpack ) )
				from.SendLocalizedMessage( 1042593 ); // That is not in your backpack.
			else if ( MLQuestSystem.Enabled && CanGiveMLQuest && from is PlayerMobile mobile )
				MLQuestSystem.OnDoubleClick( this, mobile );
		}

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

			if ( MLQuestSystem.Enabled )
				MLQuestSystem.HandleDeletion( this );
		}

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

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

			writer.Write( (int)0 ); // version
		}

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

			int version = reader.ReadInt();
		}
	}
}