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

namespace Server.Items
{
	public enum CampfireStatus
	{
		Burning,
		Extinguishing,
		Off
	}

	public class Campfire : Item
	{
		public static readonly int SecureRange = 7;

		private static readonly Hashtable m_Table = new Hashtable();

		public static CampfireEntry GetEntry( Mobile player )
		{
			return (CampfireEntry) m_Table[player];
		}

		public static void RemoveEntry( CampfireEntry entry )
		{
			m_Table.Remove( entry.Player );
			entry.Fire.m_Entries.Remove( entry );
		}

		private Timer m_Timer;
		private DateTime m_Created;

		private ArrayList m_Entries;

		public Campfire() : base( 0xDE3 )
		{
			Movable = false;
			Light = LightType.Circle300;

			m_Entries = new ArrayList();

			m_Created = DateTime.UtcNow;
			m_Timer = Timer.DelayCall( TimeSpan.FromSeconds( 1.0 ), TimeSpan.FromSeconds( 1.0 ), new TimerCallback( OnTick ) );
		}

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

		[CommandProperty( AccessLevel.GameMaster )]
		public DateTime Created => m_Created;

		[CommandProperty( AccessLevel.GameMaster )]
		public CampfireStatus Status
		{
			get
			{
				switch ( ItemID )
				{
					case 0xDE3:
						return CampfireStatus.Burning;

					case 0xDE9:
						return CampfireStatus.Extinguishing;

					default:
						return CampfireStatus.Off;
				}
			}
			set
			{
				if ( Status == value )
					return;

				switch ( value )
				{
					case CampfireStatus.Burning:
						ItemID = 0xDE3;
						Light = LightType.Circle300;
						break;

					case CampfireStatus.Extinguishing:
						ItemID = 0xDE9;
						Light = LightType.Circle150;
						break;

					default:
						ItemID = 0xDEA;
						Light = LightType.ArchedWindowEast;
						ClearEntries();
						break;
				}
			}
		}

		private void OnTick()
		{
			DateTime now = DateTime.UtcNow;
			TimeSpan age = now - Created;

			if ( age >= TimeSpan.FromSeconds( 100.0 ) )
				Delete();
			else if ( age >= TimeSpan.FromSeconds( 90.0 ) )
				Status = CampfireStatus.Off;
			else if ( age >= TimeSpan.FromSeconds( 60.0 ) )
				Status = CampfireStatus.Extinguishing;

			if ( Status == CampfireStatus.Off || Deleted )
				return;

			foreach ( CampfireEntry entry in new ArrayList( m_Entries ) )
			{
				if ( !entry.Valid || entry.Player.NetState == null )
				{
					RemoveEntry( entry );
				}
				else if ( !entry.Safe && now - entry.Start >= TimeSpan.FromSeconds( 30.0 ) )
				{
					entry.Safe = true;
					entry.Player.SendLocalizedMessage( 500621 ); // The camp is now secure.
				}
			}

			IPooledEnumerable<NetState> eable = GetClientsInRange( SecureRange );

			foreach ( NetState state in eable )
			{
				if ( state.Mobile is PlayerMobile pm && GetEntry( pm ) == null )
				{
					CampfireEntry entry = new CampfireEntry( pm, this );

					m_Table[pm] = entry;
					m_Entries.Add( entry );

					pm.SendLocalizedMessage( 500620 ); // You feel it would take a few moments to secure your camp.
				}
			}

			eable.Free();
		}

		private void ClearEntries()
		{
			if ( m_Entries == null )
				return;

			foreach ( CampfireEntry entry in new ArrayList( m_Entries ) )
			{
				RemoveEntry( entry );
			}
		}

		public override void OnAfterDelete()
		{
			m_Timer?.Stop();

			ClearEntries();
		}

		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();

			Delete();
		}
	}

	public class CampfireEntry
	{
		private PlayerMobile m_Player;
		private Campfire m_Fire;
		private DateTime m_Start;
		private bool m_Safe;

		public PlayerMobile Player => m_Player;
		public Campfire Fire => m_Fire;
		public DateTime Start => m_Start;

		public bool Valid => !Fire.Deleted && Fire.Status != CampfireStatus.Off && Player.Map == Fire.Map && Player.InRange( Fire, Campfire.SecureRange );

		public bool Safe
		{
			get => Valid && m_Safe;
			set => m_Safe = value;
		}

		public CampfireEntry( PlayerMobile player, Campfire fire )
		{
			m_Player = player;
			m_Fire = fire;
			m_Start = DateTime.UtcNow;
			m_Safe = false;
		}
	}
}