package net.minecraft.client.gui.screens.inventory.tooltip;

import net.minecraft.client.gui.navigation.ScreenRectangle;
import net.minecraft.util.Mth;
import org.joml.Vector2i;
import org.joml.Vector2ic;

public class MenuTooltipPositioner implements ClientTooltipPositioner {
	private static final int MARGIN = 5;
	private static final int MOUSE_OFFSET_X = 12;
	public static final int MAX_OVERLAP_WITH_WIDGET = 3;
	public static final int MAX_DISTANCE_TO_WIDGET = 5;
	private final ScreenRectangle screenRectangle;

	public MenuTooltipPositioner(final ScreenRectangle screenRectangle) {
		this.screenRectangle = screenRectangle;
	}

	@Override
	public Vector2ic positionTooltip(final int screenWidth, final int screenHeight, final int x, final int y, final int tooltipWidth, final int tooltipHeight) {
		Vector2i result = new Vector2i(x + 12, y);
		if (result.x + tooltipWidth > screenWidth - 5) {
			result.x = Math.max(x - 12 - tooltipWidth, 9);
		}

		result.y += 3;
		int paddedHeight = tooltipHeight + 3 + 3;
		int lowestPossibleY = this.screenRectangle.bottom() + 3 + getOffset(0, 0, this.screenRectangle.height());
		int maxY = screenHeight - 5;
		if (lowestPossibleY + paddedHeight <= maxY) {
			result.y = result.y + getOffset(result.y, this.screenRectangle.top(), this.screenRectangle.height());
		} else {
			result.y = result.y - (paddedHeight + getOffset(result.y, this.screenRectangle.bottom(), this.screenRectangle.height()));
		}

		return result;
	}

	private static int getOffset(final int mouseY, final int widgetY, final int widgetHeight) {
		int distance = Math.min(Math.abs(mouseY - widgetY), widgetHeight);
		return Math.round(Mth.lerp((float)distance / widgetHeight, widgetHeight - 3, 5.0F));
	}
}