// Copyright 2014-2017 ClassicalSharp | Licensed under BSD-3
using System;

namespace ClassicalSharp.Network {

	public sealed class CPESupport : IGameComponent {
		
		public void Init(Game game) { }
		public void Ready(Game game) { }
		public void OnNewMap(Game game) { }
		public void OnNewMapLoaded(Game game) { }
		public void Dispose() { }

		internal int ServerExtensionsCount;
		internal bool sendHeldBlock, useMessageTypes;
		internal int envMapVer = 2, blockDefsExtVer = 2;
		internal bool needD3Fix;
		
		public void Reset(Game game) {
			ServerExtensionsCount = 0;
			sendHeldBlock = false; useMessageTypes = false;
			envMapVer = 2; blockDefsExtVer = 2;
			needD3Fix = false; game.UseCPEBlocks = false;
			
			NetworkProcessor net = (NetworkProcessor)game.Server;
			net.Reset();
		}
		
		/// <summary> Sets fields / updates network handles based on the server 
		/// indicating it supports the given CPE extension. </summary>
		public void HandleEntry(string ext, int version, NetworkProcessor net) {
			ServerExtensionsCount--;
			
			if (ext == "HeldBlock") {
				sendHeldBlock = true;
			} else if (ext == "MessageTypes") {
				useMessageTypes = true;
			} else if (ext == "ExtPlayerList") {
				net.UsingExtPlayerList = true;
			} else if (ext == "PlayerClick") {
				net.UsingPlayerClick = true;
			} else if (ext == "EnvMapAppearance") {
				envMapVer = version;
				if (version == 1) return;
				net.packetSizes[(byte)Opcode.CpeEnvSetMapApperance] = 73;
			} else if (ext == "LongerMessages") {
				net.SupportsPartialMessages = true;
			} else if (ext == "FullCP437") {
				net.SupportsFullCP437 = true;
			} else if (ext == "BlockDefinitionsExt") {
				blockDefsExtVer = version;
				if (version == 1) return;
				net.packetSizes[(byte)Opcode.CpeDefineBlockExt] = 88;
			}
		}
		
		public static string[] ClientExtensions = {
			"ClickDistance", "CustomBlocks", "HeldBlock", "EmoteFix", "TextHotKey", "ExtPlayerList",
			"EnvColors", "SelectionCuboid", "BlockPermissions", "ChangeModel", "EnvMapAppearance",
			"EnvWeatherType", "HackControl", "MessageTypes", "PlayerClick", "FullCP437",
			"LongerMessages", "BlockDefinitions", "BlockDefinitionsExt", "BulkBlockUpdate", "TextColors",
			"EnvMapAspect", "EntityProperty",
		};
	}
}