#region Copyright & License Information
/*
 * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
 * This file is part of OpenRA, which is free software. It is made
 * available to you under the terms of the GNU General Public License
 * as published by the Free Software Foundation. For more information,
 * see COPYING.
 */
#endregion

using System;
using System.Drawing;
using System.Linq;
using OpenRA.Mods.Common.Traits;
using OpenRA.Mods.Common.Widgets;
using OpenRA.Mods.D2k.Widgets;
using OpenRA.Mods.RA;
using OpenRA.Mods.RA.Widgets;
using OpenRA.Mods.RA.Widgets.Logic;
using OpenRA.Traits;
using OpenRA.Widgets;

namespace OpenRA.Mods.D2k.Widgets.Logic
{
	public class IngameChromeLogic
	{
		readonly Widget ingameRoot;
		readonly Widget worldRoot;
		readonly Widget menuRoot;
		readonly Widget playerRoot;
		readonly World world;

		[ObjectCreator.UseCtor]
		public IngameChromeLogic(World world)
		{
			this.world = world;
			ingameRoot = Ui.Root.Get("INGAME_ROOT");
			worldRoot = ingameRoot.Get("WORLD_ROOT");
			menuRoot = ingameRoot.Get("MENU_ROOT");
			playerRoot = worldRoot.Get("PLAYER_ROOT");

			InitRootWidgets();
			if (world.LocalPlayer == null)
				InitObserverWidgets();
			else
				InitPlayerWidgets();
		}

		void InitRootWidgets()
		{
			Game.LoadWidget(world, "CHAT_PANEL", worldRoot, new WidgetArgs());

			world.GameOver += () =>
			{
				worldRoot.RemoveChildren();
				menuRoot.RemoveChildren();
				Game.LoadWidget(world, "LEAVE_MAP_WIDGET", menuRoot, new WidgetArgs());
			};
		}

		void InitObserverWidgets()
		{
			Game.LoadWidget(world, "OBSERVER_WIDGETS", playerRoot, new WidgetArgs());
		}

		enum RadarBinState { Closed, BinAnimating, RadarAnimating, Open }
		void InitPlayerWidgets()
		{
			var playerWidgets = Game.LoadWidget(world, "PLAYER_WIDGETS", playerRoot, new WidgetArgs());

			var radarActive = false;
			var binState = RadarBinState.Closed;
			var radarBin = playerWidgets.Get<SlidingContainerWidget>("INGAME_RADAR_BIN");
			radarBin.IsOpen = () => radarActive || binState > RadarBinState.BinAnimating;
			radarBin.AfterOpen = () => binState = RadarBinState.RadarAnimating;
			radarBin.AfterClose = () => binState = RadarBinState.Closed;

			var radarMap = radarBin.Get<RadarWidget>("RADAR_MINIMAP");
			radarMap.IsEnabled = () => radarActive && binState >= RadarBinState.RadarAnimating;
			radarMap.AfterOpen = () => binState = RadarBinState.Open;
			radarMap.AfterClose = () => binState = RadarBinState.BinAnimating;

			radarBin.Get<ImageWidget>("RADAR_BIN_BG").GetImageCollection = () => "chrome-" + world.LocalPlayer.Country.Race;

			var powerManager = world.LocalPlayer.PlayerActor.Trait<PowerManager>();
			var powerBar = radarBin.Get<ResourceBarWidget>("POWERBAR");
			powerBar.IndicatorCollection = "power-" + world.LocalPlayer.Country.Race;
			powerBar.GetProvided = () => powerManager.PowerProvided;
			powerBar.GetUsed = () => powerManager.PowerDrained;
			powerBar.TooltipFormat = "Power Usage: {0}/{1}";
			powerBar.GetBarColor = () =>
			{
				if (powerManager.PowerState == PowerState.Critical)
					return Color.Red;
				if (powerManager.PowerState == PowerState.Low)
					return Color.Orange;
				return Color.LimeGreen;
			};

			var cachedRadarActive = false;
			var sidebarTicker = playerWidgets.Get<LogicTickerWidget>("SIDEBAR_TICKER");
			sidebarTicker.OnTick = () =>
			{
				// Update radar bin
				radarActive = world.ActorsWithTrait<ProvidesRadar>()
					.Any(a => a.Actor.Owner == world.LocalPlayer && a.Trait.IsActive);

				if (radarActive != cachedRadarActive)
					Sound.PlayNotification(world.Map.Rules, null, "Sounds", radarActive ? "RadarUp" : "RadarDown", null);
				cachedRadarActive = radarActive;

				// Switch to observer mode after win/loss
				if (world.ObserveAfterWinOrLose && world.LocalPlayer.WinState != WinState.Undefined)
					Game.RunAfterTick(() =>
					{
						playerRoot.RemoveChildren();
						InitObserverWidgets();
					});
			};
		}
	}
}