using System;
using System.Drawing;
using System.Linq;
using OpenRA.Traits;

namespace OpenRA.Widgets
{
	public class WorldTooltipWidget : Widget
	{
		const int worldTooltipDelay = 10;		/* ticks */

		public override void Draw(World world)
		{
			if (Game.chrome.ticksSinceLastMove < worldTooltipDelay || world == null || world.LocalPlayer == null)
				return;

			var actor = world.FindUnitsAtMouse(Game.chrome.lastMousePos).FirstOrDefault();
			if (actor == null) return;

			var text = actor.Info.Traits.Contains<ValuedInfo>()
				? actor.Info.Traits.Get<ValuedInfo>().Description
				: actor.Info.Name;
			var text2 = (actor.Owner == world.LocalPlayer)
				? "" : (actor.Owner == world.NeutralPlayer ? "{0}" : "{0} ({1})").F(actor.Owner.PlayerName, world.LocalPlayer.Stances[actor.Owner]);

			var renderer = Game.chrome.renderer;

			var sz = renderer.BoldFont.Measure(text);
			var sz2 = renderer.RegularFont.Measure(text2);

			sz.X = Math.Max(sz.X, sz2.X);

			if (text2 != "") sz.Y += sz2.Y + 2;

			sz.X += 20;
			sz.Y += 24;

			WidgetUtils.DrawPanel("dialog4", Rectangle.FromLTRB(
				Game.chrome.lastMousePos.X + 20, Game.chrome.lastMousePos.Y + 20,
				Game.chrome.lastMousePos.X + sz.X + 20, Game.chrome.lastMousePos.Y + sz.Y + 20));

			renderer.BoldFont.DrawText(text,
				new float2(Game.chrome.lastMousePos.X + 30, Game.chrome.lastMousePos.Y + 30), Color.White);
			renderer.RegularFont.DrawText(text2,
				new float2(Game.chrome.lastMousePos.X + 30, Game.chrome.lastMousePos.Y + 50), Color.White);

			renderer.RgbaSpriteRenderer.Flush();
		}
	}
}