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

namespace Server.Mobiles
{
	public class HintCrier : BaseCreature
	{
		private static List<HintCrier> m_Instances = new List<HintCrier>();
		public static List<HintCrier> Instances { get { return m_Instances; } }

		// The timer that handles ambient shouting
		private Timer m_AutoShoutTimer;

		public static void AnnounceEvent( string message )
		{
			foreach ( HintCrier crier in m_Instances )
			{
				crier.PublicOverheadMessage( MessageType.Regular, 0x2B, false, message );
			}
		}

		private static string[] m_Hints = new string[]
		{
            "Lord British is looking for brave adventures for a 'Virtuous Quest'! See him in the castle throne room!!",
			"Walk near the crops and they just might harvest themselves..."
		};

		[Constructable]
		public HintCrier() : base( AIType.AI_Vendor, FightMode.None, 10, 1, 0.2, 0.4 )
		{
			m_Instances.Add( this );

			Title = "the town crier";
		    Hue = Utility.RandomSkinHue();
			Invulnerable = true;
            CantWalk = true;
            SpeechHue = 0x31;
            WhisperHue = 0x31;
            YellHue = 0x31;

			if ( Utility.RandomBool() )
			{
				Body = 0x191;
				Name = NameList.RandomName( "female" );
			}
			else
			{
				Body = 0x190;
				Name = NameList.RandomName( "male" );
			}

			AddItem( new FancyShirt( Utility.RandomBlueHue() ) );
			AddItem( new Kilt( Utility.RandomGreenHue() ) );
			AddItem( new FeatheredHat( Utility.RandomGreenHue() ) );
			AddItem( new ThighBoots() );
			Utility.AssignRandomHair( this );

			StartTimer();
		}

		public HintCrier( Serial serial ) : base( serial )
		{
			m_Instances.Add( this );
		}

		// Starts a looping timer that shouts a hint every 3 to 5 minutes
		private void StartTimer()
		{
			if ( m_AutoShoutTimer == null )
			{
				m_AutoShoutTimer = Timer.DelayCall( TimeSpan.FromSeconds( 15.0 ), TimeSpan.FromSeconds( 30.0 ), new TimerCallback( AutoShout_Callback ) );
			}
		}

		// Cleans up the timer if the NPC is deleted
		private void StopTimer()
		{
			if ( m_AutoShoutTimer != null )
			{
				m_AutoShoutTimer.Stop();
				m_AutoShoutTimer = null;
			}
		}

		private void AutoShout_Callback()
		{
			// Only shout if there is a player within 15 tiles to save server resources
			bool playerNearby = false;
			foreach ( Mobile m in GetMobilesInRange( 15 ) )
			{
				if ( m.Player )
				{
					playerNearby = true;
					break;
				}
			}

			if ( playerNearby )
			{
				string hint = m_Hints[Utility.Random( m_Hints.Length )];
				PublicOverheadMessage( MessageType.Regular, 0x2B, false, hint );
			}
		}

		public override bool HandlesOnSpeech( Mobile from )
		{
			return ( from.Alive && InRange( from, 12 ) );
		}

		public override void OnSpeech( SpeechEventArgs e )
		{
			string speech = e.Speech.ToLower();

			if ( (e.HasKeyword( 0x30 ) || speech.Contains("hint") || speech.Contains("rumor") || speech.Contains("secret")) && e.Mobile.Alive && InRange( e.Mobile, 12 ) )
			{
				Direction = GetDirectionTo( e.Mobile );
				string hint = m_Hints[Utility.Random( m_Hints.Length )];
				PublicOverheadMessage( MessageType.Regular, 0x2B, false, hint );
			}
		}

		public override void OnDelete()
		{
			StopTimer();
			m_Instances.Remove( this );
			base.OnDelete();
		}

		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();

			// Restart the timer when the server reboots and loads the NPC
			StartTimer();
		}
	}
}