BloodShepherdTray.java

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Alexandre Normand
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package org.glukit.app;

import com.beust.jcommander.IParameterValidator2;
import com.beust.jcommander.JCommander;
import com.beust.jcommander.Parameter;
import com.beust.jcommander.ParameterDescription;
import com.beust.jcommander.ParameterException;
import com.google.inject.Guice;
import com.google.inject.Injector;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Tray;
import org.eclipse.swt.widgets.TrayItem;
import org.glukit.dexcom.sync.DexcomDaemon;
import org.glukit.sync.api.BloodShepherdPreferences;
import org.glukit.sync.api.BloodShepherdProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.threeten.bp.Instant;

import javax.usb.UsbException;
import java.io.File;

import static java.lang.String.format;

/**
 * Main class for the bloodsucker sync dexcomDaemon.
 *
 * @author alexandre.normand
 */
public class BloodShepherdTray {
  private static Logger LOGGER = LoggerFactory.getLogger(BloodShepherdTray.class);

  @Parameter(names = "-outputPath", required = true,
          description = "the output path of the exported files (make it something under your google drive local sync directory",
          validateWith = ExistingDirectoryValidator.class)
  String outputPath;

  @Parameter(names = "-sinceAsEpochMillis", required = false, description = "resets the value of the last sync time to the provided value")
    Long since;

  public BloodShepherdTray() {

  }

  public void run() {
    BloodShepherdProperties properties = new BloodShepherdProperties();
    properties.putAll(System.getProperties());
    properties.put(BloodShepherdProperties.OUTPUT_PATH, this.outputPath);

    BloodShepherdPreferences preferences = new BloodShepherdPreferences();
    if (this.since != null) {
      LOGGER.info("Overriding last sync time to {}.", this.since);
      preferences.saveLastSyncTime(Instant.ofEpochMilli(this.since));
    }

    Injector injector = Guice.createInjector(new DexcomModule(properties));
    final DexcomDaemon dexcomDaemon = injector.getInstance(DexcomDaemon.class);

    dexcomDaemon.start();
    Runtime.getRuntime().addShutdownHook(new Thread() {
      @Override
      public void run() {
        dexcomDaemon.stop();
      }
    });

    Display display = new Display();
    final Shell shell = new Shell(display);
    Image icon = new Image(display, getClass().getClassLoader().getResourceAsStream("org/glukit/app/images/droplet-16.png"));
    Image image2 = new Image(display, getClass().getClassLoader().getResourceAsStream("org/glukit/app/images/droplet-16.png"));
    GC gc = new GC(image2);
    gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK));
    gc.fillRectangle(image2.getBounds());
    gc.dispose();
    final Tray tray = display.getSystemTray();
    if (tray == null) {
      System.err.println("The system tray is not available");
    } else {
      final TrayItem item = new TrayItem(tray, SWT.NONE);
      item.setToolTipText("SWT TrayItem");
      item.addListener(SWT.Show, new Listener() {
        public void handleEvent(Event event) {
          System.out.println("show");
        }
      });
      item.addListener(SWT.Hide, new Listener() {
        public void handleEvent(Event event) {
          System.out.println("hide");
        }
      });
      item.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event event) {
          System.out.println("selection");
        }
      });
      item.addListener(SWT.DefaultSelection, new Listener() {
        public void handleEvent(Event event) {
          System.out.println("default selection");
        }
      });

      final Menu menu = new Menu(shell, SWT.POP_UP);

      MenuItem mi = new MenuItem(menu, SWT.PUSH);
      mi.setText("Quit");
      mi.addListener(SWT.Selection, new Listener() {
        public void handleEvent(Event event) {
          shell.dispose();
        }
      });
      menu.setDefaultItem(mi);

      item.addListener(SWT.MenuDetect, new Listener() {
        public void handleEvent(Event event) {
          menu.setVisible(true);
        }
      });
      item.setImage(image2);
      item.setHighlightImage(icon);
    }
    shell.setBounds(50, 50, 300, 200);
    shell.open();
    shell.setVisible(false);

    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) display.sleep();
    }
    icon.dispose();
    image2.dispose();
    display.dispose();
  }

  public static void main(String[] args) throws UsbException {
    BloodShepherdTray dexcomReceiverSyncService = new BloodShepherdTray();
    JCommander jCommander = new JCommander(dexcomReceiverSyncService);
    try {
      jCommander.parse(args);
    } catch (ParameterException e) {
      System.err.println(e.getMessage());
      jCommander.usage();
      System.exit(1);
    }

    dexcomReceiverSyncService.run();
  }

  public static class ExistingDirectoryValidator implements IParameterValidator2 {
    @Override
    public void validate(String name, String value, ParameterDescription pd) throws ParameterException {
      validate(name, value);
    }

    @Override
    public void validate(String name, String value) throws ParameterException {
      File outputDirectory = new File(value);
      if (!outputDirectory.exists()) {
        throw new ParameterException(format("Invalid destination: %s doesn't exist", value));
      }

      if (!outputDirectory.isDirectory()) {
        throw new ParameterException(format("Invalid destination: %s is not a directory", value));
      }
    }
  }

}