package net.minecraft.client.model.monster.piglin;

import net.minecraft.client.model.HumanoidModel;
import net.minecraft.client.model.geom.ModelPart;
import net.minecraft.client.model.geom.PartPose;
import net.minecraft.client.model.geom.builders.CubeDeformation;
import net.minecraft.client.model.geom.builders.CubeListBuilder;
import net.minecraft.client.model.geom.builders.MeshDefinition;
import net.minecraft.client.model.geom.builders.PartDefinition;
import net.minecraft.client.model.player.PlayerModel;
import net.minecraft.client.renderer.entity.ArmorModelSet;
import net.minecraft.client.renderer.entity.state.HumanoidRenderState;
import net.minecraft.client.renderer.rendertype.RenderTypes;
import net.minecraft.util.Mth;

public abstract class AbstractPiglinModel<S extends HumanoidRenderState> extends HumanoidModel<S> {
	protected static final float ADULT_EAR_ANGLE_IN_DEGREES = 30.0F;
	protected static final float BABY_EAR_ANGLE_IN_DEGREES = 5.0F;
	public final ModelPart rightEar = this.head.getChild("right_ear");
	public final ModelPart leftEar = this.head.getChild("left_ear");

	public AbstractPiglinModel(final ModelPart root) {
		super(root, RenderTypes::entityTranslucent);
	}

	public static ArmorModelSet<MeshDefinition> createArmorMeshSet(final CubeDeformation innerDeformation, final CubeDeformation outerDeformation) {
		return PlayerModel.createArmorMeshSet(innerDeformation, outerDeformation).map(AbstractPiglinModel::removeEars);
	}

	private static MeshDefinition removeEars(final MeshDefinition mesh) {
		PartDefinition root = mesh.getRoot();
		PartDefinition head = root.getChild("head");
		head.addOrReplaceChild("left_ear", CubeListBuilder.create(), PartPose.ZERO);
		head.addOrReplaceChild("right_ear", CubeListBuilder.create(), PartPose.ZERO);
		return mesh;
	}

	public static PartDefinition addHead(final CubeDeformation g, final MeshDefinition mesh) {
		PartDefinition root = mesh.getRoot();
		PartDefinition head = root.addOrReplaceChild(
			"head",
			CubeListBuilder.create()
				.texOffs(0, 0)
				.addBox(-5.0F, -8.0F, -4.0F, 10.0F, 8.0F, 8.0F, g)
				.texOffs(31, 1)
				.addBox(-2.0F, -4.0F, -5.0F, 4.0F, 4.0F, 1.0F, g)
				.texOffs(2, 4)
				.addBox(2.0F, -2.0F, -5.0F, 1.0F, 2.0F, 1.0F, g)
				.texOffs(2, 0)
				.addBox(-3.0F, -2.0F, -5.0F, 1.0F, 2.0F, 1.0F, g),
			PartPose.ZERO
		);
		head.addOrReplaceChild(
			"left_ear",
			CubeListBuilder.create().texOffs(51, 6).addBox(0.0F, 0.0F, -2.0F, 1.0F, 5.0F, 4.0F, g),
			PartPose.offsetAndRotation(4.5F, -6.0F, 0.0F, 0.0F, 0.0F, (float) (-Math.PI / 6))
		);
		head.addOrReplaceChild(
			"right_ear",
			CubeListBuilder.create().texOffs(39, 6).addBox(-1.0F, 0.0F, -2.0F, 1.0F, 5.0F, 4.0F, g),
			PartPose.offsetAndRotation(-4.5F, -6.0F, 0.0F, 0.0F, 0.0F, (float) (Math.PI / 6))
		);
		return head;
	}

	public static ArmorModelSet<MeshDefinition> createBabyArmorMeshSet(
		final CubeDeformation innerDeformation, final CubeDeformation outerDeformation, final PartPose armOffset
	) {
		return PlayerModel.createBabyArmorMeshSet(innerDeformation, outerDeformation, armOffset).map(AbstractPiglinModel::removeEars);
	}

	@Override
	public void setupAnim(final S state) {
		super.setupAnim(state);
		float animationPos = state.walkAnimationPos;
		float animationSpeed = state.walkAnimationSpeed;
		float defaultAngle = this.getDefaultEarAngleInDegrees() * (float) (Math.PI / 180.0);
		float frequency = state.ageInTicks * 0.1F + animationPos * 0.5F;
		float amplitude = 0.08F + animationSpeed * 0.4F;
		this.leftEar.zRot = -defaultAngle - Mth.cos(frequency * 1.2F) * amplitude;
		this.rightEar.zRot = defaultAngle + Mth.cos(frequency) * amplitude;
	}

	protected abstract float getDefaultEarAngleInDegrees();
}