package net.minecraft.client.gui.components.debugchart;

import java.util.Locale;
import net.fabricmc.api.EnvType;
import net.fabricmc.api.Environment;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Font;
import net.minecraft.client.gui.GuiGraphics;
import net.minecraft.client.renderer.RenderType;
import net.minecraft.util.debugchart.SampleStorage;

@Environment(EnvType.CLIENT)
public class FpsDebugChart extends AbstractDebugChart {
	private static final int CHART_TOP_FPS = 30;
	private static final double CHART_TOP_VALUE = 33.333333333333336;

	public FpsDebugChart(Font font, SampleStorage sampleStorage) {
		super(font, sampleStorage);
	}

	@Override
	protected void renderAdditionalLinesAndLabels(GuiGraphics guiGraphics, int x, int width, int height) {
		this.drawStringWithShade(guiGraphics, "30 FPS", x + 1, height - 60 + 1);
		this.drawStringWithShade(guiGraphics, "60 FPS", x + 1, height - 30 + 1);
		guiGraphics.hLine(RenderType.guiOverlay(), x, x + width - 1, height - 30, -1);
		int i = Minecraft.getInstance().options.framerateLimit().get();
		if (i > 0 && i <= 250) {
			guiGraphics.hLine(RenderType.guiOverlay(), x, x + width - 1, height - this.getSampleHeight(1.0E9 / i) - 1, -16711681);
		}
	}

	@Override
	protected String toDisplayString(double value) {
		return String.format(Locale.ROOT, "%d ms", (int)Math.round(toMilliseconds(value)));
	}

	@Override
	protected int getSampleHeight(double value) {
		return (int)Math.round(toMilliseconds(value) * 60.0 / 33.333333333333336);
	}

	@Override
	protected int getSampleColor(long value) {
		return this.getSampleColor(toMilliseconds(value), 0.0, -16711936, 28.0, -256, 56.0, -65536);
	}

	private static double toMilliseconds(double value) {
		return value / 1000000.0;
	}
}