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package processing.app;

import cc.arduino.packages.BoardPort;

import cc.arduino.packages.ssh.NoInteractionUserInfo;

import cc.arduino.packages.ssh.SSHClientSetupChainRing;

import cc.arduino.packages.ssh.SSHConfigFileSetup;

import cc.arduino.packages.ssh.SSHPwdSetup;

import com.jcraft.jsch.*;

import processing.app.debug.MessageConsumer;

import processing.app.debug.MessageSiphon;

import javax.swing.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import static processing.app.I18n._;

@SuppressWarnings("serial")

public class NetworkMonitor extends AbstractMonitor implements MessageConsumer {

private static final int MAX_CONNECTION_ATTEMPTS = 5;

private MessageSiphon inputConsumer;

private Session session;

private Channel channel;

private int connectionAttempts;

public NetworkMonitor(BoardPort port) {

super(port);

onSendCommand(new ActionListener() {

public void actionPerformed(ActionEvent event) {

try {

OutputStream out = channel.getOutputStream();

out.write(textField.getText().getBytes());

out.write('\n');

out.flush();

} catch (IOException e) {

e.printStackTrace();

}

textField.setText("");

}

});

}

@Override

public boolean requiresAuthorization() {

return true;

}

@Override

public String getAuthorizationKey() {

return "runtime.pwd." + getBoardPort().getAddress();

}

@Override

public void open() throws Exception {

super.open();

this.connectionAttempts = 0;

JSch jSch = new JSch();

SSHClientSetupChainRing sshClientSetupChain = new SSHConfigFileSetup(new SSHPwdSetup());

session = sshClientSetupChain.setup(getBoardPort(), jSch);

session.setUserInfo(new NoInteractionUserInfo(PreferencesData.get(getAuthorizationKey())));

session.connect(30000);

tryConnect();

}

private void tryConnect() throws JSchException, IOException {

connectionAttempts++;

if (connectionAttempts > 1) {

try {

Thread.sleep(2000);

} catch (InterruptedException e) {

// ignored

}

}

if (!session.isConnected()) {

return;

}

channel = session.openChannel("exec");

((ChannelExec) channel).setCommand("telnet localhost 6571");

InputStream inputStream = channel.getInputStream();

InputStream errStream = ((ChannelExec) channel).getErrStream();

channel.connect();

inputConsumer = new MessageSiphon(inputStream, this);

new MessageSiphon(errStream, this);

if (connectionAttempts > 1) {

SwingUtilities.invokeLater(new Runnable() {

@Override

public void run() {

try {

Thread.sleep(1000);

} catch (InterruptedException e) {

// ignore

}

if (channel.isConnected()) {

NetworkMonitor.this.message(_("connected!") + '\n');

}

}

});

}

}

@Override

public synchronized void message(String s) {

if (s.contains("can't connect")) {

while (!channel.isClosed()) {

try {

Thread.sleep(100);

} catch (InterruptedException e) {

// ignore

}

}

if (connectionAttempts < MAX_CONNECTION_ATTEMPTS) {

s = "\n" + _("Unable to connect: retrying") + " (" + connectionAttempts + ")... ";

SwingUtilities.invokeLater(new Runnable() {

@Override

public void run() {

try {

NetworkMonitor.this.tryConnect();

} catch (JSchException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

});

} else {

s = "\n" + _("Unable to connect: is the sketch using the bridge?");

}

}

super.message(s);

}

@Override

public void close() throws Exception {

super.close();

if (channel != null) {

inputConsumer.stop();

channel.disconnect();

textArea.setText("");

}

if (session != null) {

session.disconnect();

}

}

}