WarpPI/desktop/src/main/java/it/cavallium/warppi/desktop/DesktopPlatform.java

package it.cavallium.warppi.desktop;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.commons.io.FileUtils;

import it.cavallium.warppi.Engine;
import it.cavallium.warppi.Platform;
import it.cavallium.warppi.gui.graphicengine.GraphicEngine;
import it.cavallium.warppi.gui.graphicengine.impl.jogl.JOGLEngine;
import it.cavallium.warppi.gui.graphicengine.impl.swing.SwingEngine;
import it.cavallium.warppi.util.CacheUtils;
import it.cavallium.warppi.util.Error;

public class DesktopPlatform implements Platform {

	private final DesktopConsoleUtils cu;
	private final DesktopGpio gi;
	private final DesktopStorageUtils su;
	private final ImageUtils pu;
	private final String on;
	private final Map<String, GraphicEngine> el;
	private final DesktopSettings settings;
	private Boolean runningOnRaspberryOverride = null;

	public DesktopPlatform() {
		cu = new DesktopConsoleUtils();
		gi = new DesktopGpio();
		su = new DesktopStorageUtils();
		pu = new DesktopImageUtils();
		on = System.getProperty("os.name").toLowerCase();
		el = new HashMap<>();
		el.put("CPU engine", new SwingEngine());
		el.put("GPU engine", new JOGLEngine());
		settings = new DesktopSettings();
	}

	@Override
	public ConsoleUtils getConsoleUtils() {
		return cu;
	}

	@Override
	public Gpio getGpio() {
		return gi;
	}

	@Override
	public StorageUtils getStorageUtils() {
		return su;
	}

	@Override
	public ImageUtils getImageUtils() {
		return pu;
	}

	@Override
	public DesktopSettings getSettings() {
		return settings;
	}

	@Override
	public void setThreadName(final Thread t, final String name) {
		t.setName(name);
	}

	@Override
	public void setThreadDaemon(final Thread t) {
		t.setDaemon(true);
	}

	@Override
	public void setThreadDaemon(final Thread t, final boolean value) {
		t.setDaemon(value);
	}

	@Override
	public void exit(final int value) {
		System.exit(value);
	}

	@Override
	public void gc() {
		System.gc();
	}

	@Override
	public boolean isJavascript() {
		return false;
	}

	@Override
	public String getOsName() {
		return on;
	}

	@Override
	public void alphaChanged(final boolean val) {
		final GraphicEngine currentEngine = Engine.INSTANCE.getHardwareDevice().getDisplayManager().engine;
		if (currentEngine instanceof SwingEngine)
			((SwingEngine) currentEngine).setAlphaChanged(val);
	}

	@Override
	public void shiftChanged(final boolean val) {
		final GraphicEngine currentEngine = Engine.INSTANCE.getHardwareDevice().getDisplayManager().engine;
		if (currentEngine instanceof SwingEngine)
			((SwingEngine) currentEngine).setShiftChanged(val);
	}

	@Override
	public Semaphore newSemaphore() {
		return new DesktopSemaphore(0);
	}

	@Override
	public Semaphore newSemaphore(final int i) {
		return new DesktopSemaphore(i);
	}

	@Override
	public URLClassLoader newURLClassLoader(final URL[] urls) {
		return new DesktopURLClassLoader(urls);
	}

	@Override
	public Map<String, GraphicEngine> getEnginesList() {
		return el;
	}

	@Override
	public GraphicEngine getEngine(final String string) throws NullPointerException {
		return el.get(string);
	}

	@Override
	public void throwNewExceptionInInitializerError(final String text) {
		throw new ExceptionInInitializerError();
	}

	@Override
	public String[] stacktraceToString(final Error e) {
		final StringWriter sw = new StringWriter();
		final PrintWriter pw = new PrintWriter(sw);
		e.printStackTrace(pw);
		return sw.toString().toUpperCase().replace("\t", "    ").replace("\r", "").split("\n");
	}

	@Override
	public List<String> getRuleFilePaths() throws IOException {
		final File dslRulesPath = getStorageUtils().get("rules/");
		List<String> paths = new ArrayList<>();
		if (dslRulesPath.exists()) {
			for (final File file : getStorageUtils().walk(dslRulesPath)) {
				final String path = file.toString();
				if (path.endsWith(".rules")) {
					paths.add(path);
				}
			}
		}
		return paths;
	}

	@Override
	public void setRunningOnRaspberry(boolean b) {
		if (isRunningOnRaspberry()) {
			runningOnRaspberryOverride = b;
		} else {
			runningOnRaspberryOverride = false;
		}
	}
	
	@Override
	public boolean isRunningOnRaspberry() {
		if (runningOnRaspberryOverride != null) return runningOnRaspberryOverride;
		return CacheUtils.get("isRunningOnRaspberry", 24 * 60 * 60 * 1000, () -> {
			if (Engine.getPlatform().isJavascript())
				return false;
			if (Engine.getPlatform().getOsName().equals("Linux"))
				try {
					final File osRelease = new File("/etc", "os-release");
					return FileUtils.readLines(osRelease, "UTF-8").stream().map(String::toLowerCase).anyMatch(line -> line.contains("raspbian") && line.contains("name"));
				} catch (final IOException readException) {
					return false;
				}
			else
				return false;
		});
	}

}