using System;
using System.Collections.Generic;
using HarmonyLib;
using RimWorld;
using UnityEngine;
using Verse;

namespace Rimworld_Animations_Patch
{
	[StaticConstructorOnStartup]
	public static class HarmonyPatch_VisiblePants
	{
		static HarmonyPatch_VisiblePants()
		{
			try
			{
				((Action)(() =>
				{
					if (LoadedModManager.RunningModsListForReading.Any(x => x.PackageIdPlayerFacing == "XeoNovaDan.VisiblePants"))
					{
						(new Harmony("HeyLover")).Patch(AccessTools.Method(typeof(ApparelGraphicRecordGetter), "TryGetGraphicApparel"),
							prefix: new HarmonyMethod(AccessTools.Method(typeof(HarmonyPatch_VisiblePants), "Prefix_ApparelGraphicRecordGetter_TryGetGraphicApparel")));
					}
				}))();
			}
			catch (TypeLoadException) { }
		}

		public static bool Prefix_ApparelGraphicRecordGetter_TryGetGraphicApparel(ref bool __result, ref Apparel apparel, ref BodyTypeDef bodyType, out ApparelGraphicRecord rec)
		{
			rec = new ApparelGraphicRecord(null, null);

			if (bodyType == null)
			{
				Log.Error("Found apparel graphic with undefined body type.");
				bodyType = BodyTypeDefOf.Male;
			}

			if (apparel == null || apparel.WornGraphicPath.NullOrEmpty())
			{
				rec = new ApparelGraphicRecord(null, null);
				__result = false;
				return false;
			}

			string path;

			if (apparel.def.apparel.LastLayer == ApparelLayerDefOf.Overhead || apparel.def.apparel.LastLayer == ApparelLayerDefOf.EyeCover || PawnRenderer.RenderAsPack(apparel) || apparel.WornGraphicPath == BaseContent.PlaceholderImagePath || apparel.WornGraphicPath == BaseContent.PlaceholderGearImagePath)
			{ path = apparel.WornGraphicPath; }

			else
			{ path = apparel.WornGraphicPath + "_" + bodyType.defName; }

			Shader shader = ShaderDatabase.Cutout;

			if (apparel.def.apparel.useWornGraphicMask)
			{ shader = ShaderDatabase.CutoutComplex; }

			// Load the standard apparel graphic
			Graphic graphic = GraphicDatabase.Get<Graphic_Multi>(path, shader, apparel.def.graphicData.drawSize, apparel.DrawColor);

			// This graphic may need to be masked if the apparel sits on the skin layer and does not cover the legs
			if (apparel.def.apparel.LastLayer == ApparelLayerDefOf.OnSkin && apparel.def.apparel.bodyPartGroups.Contains(BodyPartGroupDefOf.Torso) && !apparel.def.apparel.bodyPartGroups.Contains(BodyPartGroupDefOf.Legs))
			{
				Graphic graphicWithApparelMask = GraphicDatabase.Get<Graphic_Multi>(path, ShaderDatabase.CutoutComplex, apparel.def.graphicData.drawSize, apparel.DrawColor, apparel.DrawColor, null, "Masks/apparel_shirt_mask_" + bodyType.defName);
				graphic = GraphicMaskingUtility.ApplyGraphicWithMasks(graphic, graphicWithApparelMask, true);
				//Log.Message("Applying apparel mask: Masks/apparel_shirt_mask_" + bodyType.defName + " to " + apparel.def.defName);
			}

			rec = new ApparelGraphicRecord(graphic, apparel);
			__result = true;

			return false;
		}
	}
}