package com.marginallyclever.robotoverlord.renderpanel.texturemanager;

import com.jogamp.opengl.util.texture.Texture;
import com.jogamp.opengl.util.texture.TextureIO;
import com.marginallyclever.robotoverlord.renderpanel.OpenGLTestMinimal;
import com.marginallyclever.robotoverlord.renderpanel.OpenGLTestPerspective;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.condition.DisabledIfEnvironmentVariable;

import javax.imageio.ImageIO;
import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.Objects;

@DisabledIfEnvironmentVariable(named = "CI", matches = "true", disabledReason = "headless environment")
public class CompareLoadMethods {
    public void compare() throws IOException {
        // old method
        Texture a = TextureIO.newTexture(Objects.requireNonNull(CompareLoadMethods.class.getResourceAsStream("viewCube.png")),false,"png");

        // new method
        BufferedImage image = ImageIO.read(Objects.requireNonNull(CompareLoadMethods.class.getResourceAsStream("viewCube.png")));
        Texture b = GLTextureFromImage.BufferedImageToTexture(null,image);

        // compare contents by dumping to temp files and doing byte-by-byte comparison
        File tempA = File.createTempFile("methodA",".png");
        tempA.deleteOnExit();
        File tempB = File.createTempFile("methodB",".png");
        tempB.deleteOnExit();

        TextureIO.write(a,tempA);
        TextureIO.write(b,tempB);

        byte[] dataA = Files.readAllBytes(tempA.toPath());
        byte[] dataB = Files.readAllBytes(tempB.toPath());

        Assertions.assertArrayEquals(dataA,dataB);
    }

    public static void main(String[] args) {
        OpenGLTestMinimal rp = new OpenGLTestMinimal();
        JButton runTest = new JButton("compare");
        runTest.addActionListener(e -> {
            rp.getGlCanvas().invoke(false,(glAutoDrawable)-> {
                try {
                    (new CompareLoadMethods()).compare();
                } catch (IOException ioException) {
                    ioException.printStackTrace();
                }
                return false;
            });
        });
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(rp.getPanel(),BorderLayout.CENTER);
        panel.add(runTest,BorderLayout.SOUTH);

        // make a frame
        JFrame frame = new JFrame( OpenGLTestPerspective.class.getSimpleName());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(panel);
        frame.setPreferredSize(new Dimension(600,600));
        frame.setSize(600,600);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }
}