// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
using System;
using ClassicalSharp.Entities;
using OpenTK;
using OpenTK.Input;

namespace ClassicalSharp.Network {

	public partial class NetworkProcessor : IServerConnection {
		
		public override void SendChat( string text, bool partial ) {
			if( String.IsNullOrEmpty( text ) ) return;
			classic.SendChat( text, partial );
		}
		
		public override void SendPosition( Vector3 pos, float yaw, float pitch ) {
			classic.SendPosition( pos, yaw, pitch );
		}
		
		public override void SendPlayerClick( MouseButton button, bool buttonDown, byte targetId, PickedPos pos ) {
			cpe.SendPlayerClick( button, buttonDown, targetId, pos );
		}

		
		internal void CheckName( byte id, ref string displayName, ref string skinName ) {
			displayName = Utils.RemoveEndPlus( displayName );
			skinName = Utils.RemoveEndPlus( skinName );
			skinName = Utils.StripColours( skinName );
			
			// Server is only allowed to change our own name colours.
			if( id != 0xFF ) return;
			if( Utils.StripColours( displayName ) != game.Username )
				displayName = game.Username;
			if( skinName == "" )
				skinName = game.Username;
		}
		
		internal void AddEntity( byte id, string displayName, string skinName, bool readPosition ) {
			if( id != 0xFF ) {
				Player oldPlayer = game.Entities[id];
				if( oldPlayer != null ) {
					game.EntityEvents.RaiseRemoved( id );
					oldPlayer.Despawn();
				}
				game.Entities[id] = new NetPlayer( displayName, skinName, game, id );
				game.EntityEvents.RaiseAdded( id );
			} else {
				game.LocalPlayer.DisplayName = displayName;
				game.LocalPlayer.SkinName = skinName;
				game.LocalPlayer.UpdateName();
			}
			
			string identifier = game.Entities[id].SkinIdentifier;
			game.AsyncDownloader.DownloadSkin( identifier, skinName );
			if( !readPosition ) return;
			
			classic.ReadAbsoluteLocation( id, false );
			if( id != 0xFF ) return;
			LocalPlayer p = game.LocalPlayer;
			p.Spawn = p.Position;
			p.SpawnYaw = p.HeadYawDegrees;
			p.SpawnPitch = p.PitchDegrees;
		}
		
		internal void RemoveEntity( byte id ) {
			Player player = game.Entities[id];
			if( player == null ) return;
			
			if( id != 0xFF ) {
				game.EntityEvents.RaiseRemoved( id );
				player.Despawn();
				game.Entities[id] = null;
			}
			
			// See comment about LegendCraft in HandleAddEntity
			int mask = id >> 3, bit = 1 << (id & 0x7);
			if( (needRemoveNames[mask] & bit) == 0 ) return;
			game.EntityEvents.RaiseTabEntryRemoved( id );
			game.TabList.Entries[id] = null;
			needRemoveNames[mask] &= (byte)~bit;
		}
		
		internal void AddTablistEntry( byte id, string playerName, string listName,
		                              string groupName, byte groupRank ) {
			TabListEntry oldInfo = game.TabList.Entries[id];
			TabListEntry info = new TabListEntry( (byte)id, playerName, listName, groupName, groupRank );
			game.TabList.Entries[id] = info;
			
			if( oldInfo != null ) {
				// Only redraw the tab list if something changed.
				if( info.PlayerName != oldInfo.PlayerName || info.ListName != oldInfo.ListName ||
				   info.GroupName != oldInfo.GroupName || info.GroupRank != oldInfo.GroupRank ) {
					game.EntityEvents.RaiseTabListEntryChanged( id );
				}
			} else {
				game.EntityEvents.RaiseTabEntryAdded( id );
			}
		}
		
		internal void UpdateLocation( byte playerId, LocationUpdate update, bool interpolate ) {
			Player player = game.Entities[playerId];
			if( player != null ) {
				player.SetLocation( update, interpolate );
			}
		}
	}
}