// Copyright 2014-2017 ClassicalSharp | Licensed under BSD-3
using System;
using System.Collections.Generic;
using System.Text;
using ClassicalSharp.Renderers;
using OpenTK.Input;

namespace ClassicalSharp.Commands {
	
	/// <summary> Command that displays the list of all currently registered client commands. </summary>
	public sealed class CommandsCommand : Command {
		
		public CommandsCommand() {
			Name = "Commands";
			Help = new string[] {
				"&a/client commands",
				"&ePrints a list of all usable commands"
			};
		}
		
		public override void Execute(string[] args) {
			game.CommandList.PrintDefinedCommands(game);
		}
	}
	
	/// <summary> Command that displays information about an input client command. </summary>
	public sealed class HelpCommand : Command {
		
		public HelpCommand() {
			Name = "Help";
			Help = new string[] {
				"&a/client help [command name]",
				"&eDisplays the help for the given command.",
			};
		}
		
		public override void Execute(string[] args) {
			if (args.Length == 1) {
				game.Chat.Add("&eList of client commands:");
				game.CommandList.PrintDefinedCommands(game);
				game.Chat.Add("&eTo see a particular command's help, type /client help [cmd name]");
			} else {
				Command cmd = game.CommandList.GetMatch(args[1]);
				if (cmd == null) return;
				string[] help = cmd.Help;
				for (int i = 0; i < help.Length; i++)
					game.Chat.Add(help[i]);
			}
		}
	}
	
	/// <summary> Command that displays information about the user's GPU. </summary>
	public sealed class GpuInfoCommand : Command {
		
		public GpuInfoCommand() {
			Name = "GpuInfo";
			Help = new string[] {
				"&a/client gpuinfo",
				"&eDisplays information about your GPU.",
			};
		}
		
		public override void Execute(string[] args) {
			string[] lines = game.Graphics.ApiInfo;
			for (int i = 0; i < lines.Length; i++)
				game.Chat.Add("&a" + lines[i]);
		}
	}
	
	public sealed class RenderTypeCommand : Command {
		
		public RenderTypeCommand() {
			Name = "RenderType";
			Help = new string[] {
				"&a/client rendertype [normal/legacy/legacyfast]",
				"&bnormal: &eDefault renderer, with all environmental effects enabled.",
				"&blegacy: &eMay be slightly slower than normal, but produces the same environmental effects.",
				"&blegacyfast: &eSacrifices clouds, fog and overhead sky for faster performance.",
				"&bnormalfast: &eSacrifices clouds, fog and overhead sky for faster performance.",
			};
		}
		
		public override void Execute(string[] args) {
			if (args.Length == 1) {
				game.Chat.Add("&e/client: &cYou didn't specify a new render type.");
			} else if (game.SetRenderType(args[1])) {
				game.Chat.Add("&e/client: &fRender type is now " + args[1] + ".");
			} else {
				game.Chat.Add("&e/client: &cUnrecognised render type &f\"" + args[1] + "\"&c.");
			}
		}
	}
}