package net.minecraft.client.renderer;

import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.Util;
import net.minecraft.core.Direction;

@Environment(EnvType.CLIENT)
public enum FaceInfo {
	DOWN(
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MAX_Z)
	),
	UP(
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MIN_Z)
	),
	NORTH(
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MIN_Z)
	),
	SOUTH(
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MAX_Z)
	),
	WEST(
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MIN_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MAX_Z)
	),
	EAST(
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MAX_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MIN_Y, FaceInfo.Constants.MIN_Z),
		new FaceInfo.VertexInfo(FaceInfo.Constants.MAX_X, FaceInfo.Constants.MAX_Y, FaceInfo.Constants.MIN_Z)
	);

	private static final FaceInfo[] BY_FACING = Util.make(new FaceInfo[6], faceInfos -> {
		faceInfos[FaceInfo.Constants.MIN_Y] = DOWN;
		faceInfos[FaceInfo.Constants.MAX_Y] = UP;
		faceInfos[FaceInfo.Constants.MIN_Z] = NORTH;
		faceInfos[FaceInfo.Constants.MAX_Z] = SOUTH;
		faceInfos[FaceInfo.Constants.MIN_X] = WEST;
		faceInfos[FaceInfo.Constants.MAX_X] = EAST;
	});
	private final FaceInfo.VertexInfo[] infos;

	public static FaceInfo fromFacing(Direction facing) {
		return BY_FACING[facing.get3DDataValue()];
	}

	private FaceInfo(final FaceInfo.VertexInfo... infos) {
		this.infos = infos;
	}

	public FaceInfo.VertexInfo getVertexInfo(int index) {
		return this.infos[index];
	}

	@Environment(EnvType.CLIENT)
	public static final class Constants {
		public static final int MAX_Z = Direction.SOUTH.get3DDataValue();
		public static final int MAX_Y = Direction.UP.get3DDataValue();
		public static final int MAX_X = Direction.EAST.get3DDataValue();
		public static final int MIN_Z = Direction.NORTH.get3DDataValue();
		public static final int MIN_Y = Direction.DOWN.get3DDataValue();
		public static final int MIN_X = Direction.WEST.get3DDataValue();
	}

	@Environment(EnvType.CLIENT)
	public static class VertexInfo {
		public final int xFace;
		public final int yFace;
		public final int zFace;

		VertexInfo(int xFace, int yFace, int zFace) {
			this.xFace = xFace;
			this.yFace = yFace;
			this.zFace = zFace;
		}
	}
}