/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.carbide.trk.support.service;

import com.freescale.cdt.debug.cw.core.SerialConnectionSettings;

import com.nokia.carbide.remoteconnections.interfaces.*;

import com.nokia.carbide.remoteconnections.interfaces.IConnectedService.IStatus.EStatus;

import com.nokia.carbide.remoteconnections.interfaces.IRemoteAgentInstallerProvider.IRemoteAgentInstaller;

import com.nokia.carbide.trk.support.Messages;

import com.nokia.carbide.trk.support.connection.*;

import com.nokia.cpp.internal.api.utils.core.Check;

import com.nokia.cpp.internal.api.utils.core.Pair;

import com.nokia.tcf.api.*;

import org.eclipse.core.runtime.IProgressMonitor;

import org.osgi.framework.Version;

import java.io.IOException;

import java.text.MessageFormat;

import java.util.List;

/**

 *

 */

public class TRKConnectedService extends AbstractConnectedService {

	static {

		try {

			System.loadLibrary("GetTRKVersion"); //$NON-NLS-1$

		} catch (UnsatisfiedLinkError e) {

			// no such library, e.g., not on Windows or in a misconfigured dev layout

			e.printStackTrace();

		}

	}

	public native static void getTRKVersionFromSerial(String portName, 

			int baud, int dataBits, int parity, int stopBits, int flowControl,

			int[] version) throws Exception;

	private static final String OK_STATUS = 

		Messages.getString("TRKConnectedService.OKStatus"); //$NON-NLS-1$

	private static final String IS_LASTEST = 

		Messages.getString("TRKConnectedService.IsLatestStatus"); //$NON-NLS-1$

	private static final String NEEDS_INSTALL = 

		Messages.getString("TRKConnectedService.NeedsInstallStatus1") + //$NON-NLS-1$

		Messages.getString("TRKConnectedService.NeedsInstallStatus2"); //$NON-NLS-1$

	private static final String ERROR = 

		Messages.getString("TRKConnectedService.ErrorStatus"); //$NON-NLS-1$

	private static final String PORT_IN_USE =

		Messages.getString("TRKConnectedService.PortInUseStatus"); //$NON-NLS-1$

	private static final String TCPIP_IN_USE =

		Messages.getString("TRKConnectedService.TCPIPInUseStatus"); //$NON-NLS-1$

	private static final byte[] TRK_PING = {0x7e, 0x0, 0x0, (byte) 0xff, 0x7e};

	private static final byte[] TRK_VERSION = {0x7e, 0x08, 0x01, (byte) 0xf6, 0x7e};

	private Pair<String, Version> deviceOS;

	private TRKService trkService;

	static Class<?> startTCFServer = TCFClassFactory.class; // force the tcf plugin to load

	public TRKConnectedService(IService service, AbstractSynchronizedConnection connection) {

		super(service, connection);

		Check.checkContract(service instanceof TRKService);

		trkService = (TRKService) service;

		currentStatus = new Status();

	}

	public IStatus getStatus() {

		return currentStatus;

	}

	private String getSimplePortName(int portNum) {

		return "COM" + portNum; //$NON-NLS-1$

	}

	private String getPortNameForSerial(int portNum) {

		String portNamePrefix = portNum > 9 ? "\\\\.\\" : ""; //$NON-NLS-1$ //$NON-NLS-2$

		return portNamePrefix + getSimplePortName(portNum);

	}

	private Version getTRKVersionFromDevice() throws ConnectionFailException {

		if (connection.getConnectionType() instanceof SerialConnectionType) {

			int[] versInts = {0,0,0};

			String portNumStr = connection.getSettings().get(SerialConnectionSettings.PORT);

			int portNum = Integer.parseInt(portNumStr);

			int baud = getIndexValue(SerialConnectionSettings.BAUD);

			int dataBits = getIndexValue(SerialConnectionSettings.DATA_BITS);

			int parity = getIndexValue(SerialConnectionSettings.PARITY);

			int stopBits = getIndexValue(SerialConnectionSettings.STOP_BITS);

			int flowControl = getIndexValue(SerialConnectionSettings.FLOW_CONTROL);

			try {

				getTRKVersionFromSerial(getPortNameForSerial(portNum), baud, dataBits, parity, stopBits, flowControl, versInts);

			}

			catch (Exception e) {

				throw new ConnectionFailException(e.getMessage());

			}

			return new Version(versInts[0], versInts[1], versInts[2]);

		}

		else if (connection.getConnectionType() instanceof USBConnectionType) {

			String portNumStr = connection.getSettings().get(SerialConnectionSettings.PORT);

			int portNum = Integer.parseInt(portNumStr);

			return getTRKVersionFromOSTUSB(getSimplePortName(portNum));

		}

		return null;

	}

	private Version getTRKVersionFromOSTUSB(String port) throws ConnectionFailException {

		ITCConnection conn = TCFClassFactory.createITCVirtualSerialConnection(port);

		conn.setDecodeFormat("ost"); //$NON-NLS-1$

		return getTRKVersionUsingTCF(conn, (byte)0x90, (byte)0x90);

	}

	private Version getTRKVersionUsingTCF(ITCConnection conn, byte trkResponseId, byte trkRequestId) throws ConnectionFailException {

//		System.out.println("entering getTRKVersionUsingTCF");

		Version version = null;

		ITCMessageOptions options = TCFClassFactory.createITCMessageOptions();

		options.setMessageEncodeFormat(ITCMessageOptions.ENCODE_FORMAT); // we send raw trk

		options.setUnWrapFormat(ITCMessageOptions.UNWRAP_DELETE_HEADERS); // return raw trk

		options.setInputStreamSize(64);

		// message Ids to capture (we must capture TRK response messages = id=0x45)

		ITCMessageIds ids = TCFClassFactory.createITCMessageIds();

		ids.addMessageId(trkResponseId); // TRK response

		ITCMessage tcMsgPing = TCFClassFactory.createITCMessage(TRK_PING);

		tcMsgPing.setUseMyMessageId(true, trkRequestId);

		ITCMessage tcMsgVersion = TCFClassFactory.createITCMessage(TRK_VERSION);

		tcMsgVersion.setUseMyMessageId(true, trkRequestId);

		// connect

		ITCAPIConnection api = TCFClassFactory.createITCAPIConnection();

		org.eclipse.core.runtime.IStatus connStatus = api.connect(conn, options, ids);

		// get a reference to the input stream

		ITCMessageInputStream stream = api.getInputStream();

		// send trk ping

		if (connStatus.isOK()) {

			try {

				org.eclipse.core.runtime.IStatus sendStatus = api.sendMessage(tcMsgPing);

				if (sendStatus.isOK()) {

					waitForSingleTCMessage(stream);

					if (stream.peekMessages() > 0) {

						/*ITCMessage message =*/ stream.readMessage(); // ping response

					}

					else

						throw new ConnectionFailException(Messages.getString("TRKConnectedService.NoPingError")); //$NON-NLS-1$

					// send trk version

					sendStatus = api.sendMessage(tcMsgVersion);

					waitForSingleTCMessage(stream);

					if (stream.peekMessages() > 0) {

						ITCMessage tcMessage = stream.readMessage(); // version response

						byte[] message = tcMessage.getMessage();

//						printMessage(message);

						if (message != null && message.length == 11) {

							version = new Version(message[4], message[5], message[8]);

						}

						else

							throw new ConnectionFailException(Messages.getString("TRKConnectedService.BadVersionResponseError")); //$NON-NLS-1$

					}

					else

						throw new ConnectionFailException(Messages.getString("TRKConnectedService.NoPingErrorNoVersionError")); //$NON-NLS-1$

				}

				else

					throw new ConnectionFailException(sendStatus.getMessage());

			}

			catch (IOException e) {

				throw new ConnectionFailException(e.getMessage());

			}

			finally {

				api.disconnect();

//				System.out.println("leaving getTRKVersionUsingTCF");

			}

		}

		else

			throw new ConnectionFailException(connStatus.getMessage());

		return version;

	}

//	private void printMessage(byte[] message) {

//	for (int i = 0; i < message.length; i++) {

//		String hexString = Integer.toHexString(message[i]);

//		if (hexString.length() == 1)

//			hexString = "0" + hexString;

//		else if (hexString.length() > 2)

//			hexString = hexString.substring(hexString.length() - 2);

//		System.out.print(hexString);

//		if (i + 1 < message.length)

//			System.out.print('-');

//	}

//	System.out.println();

//}

	private void waitForSingleTCMessage(ITCMessageInputStream stream) throws IOException {

		int timeout = TIMEOUT;

		while (stream.peekMessages() == 0) {

			try {

				Thread.sleep(200);

				timeout -= 200;

				if (timeout <= 0)

					break;

			} catch (InterruptedException e) {

			}

		}

	}

	private int getIndexValue(String key) {

		String val = connection.getSettings().get(key);

		return SerialConnectionSettings.toIndex(key, val);

	}

	private Version getLatestVersionFromServer() {

		if (deviceOS != null) {

			List<IRemoteAgentInstaller> installers = 

				trkService.getInstallerProvider().getRemoteAgentInstallers(deviceOS.first, deviceOS.second);

			if (installers != null && !installers.isEmpty()) {

				// use the first one

				return installers.get(0).getInstallerVersion();

			}

		}

		return null;

	}

	private String getShortDescription(EStatus estatus) {

		switch (estatus) {

		case UP:

			return Messages.getString("TRKConnectedService.RunningLabel"); //$NON-NLS-1$

		case DOWN:

			return Messages.getString("TRKConnectedService.DownLabel"); //$NON-NLS-1$

		case IN_USE:

			return Messages.getString("TRKConnectedService.InUseLabel"); //$NON-NLS-1$

		}

		return Messages.getString("TRKConnectedService.UnknownLabel"); //$NON-NLS-1$

	}

	protected TestResult runTestStatus(IProgressMonitor monitor) {

		String message = null;

		EStatus estatus = EStatus.DOWN;

		monitor.beginTask(Messages.getString("TRKConnectedService.TaskLabel"), IProgressMonitor.UNKNOWN); //$NON-NLS-1$

		synchronized (connection) {

			boolean didTest = false;

			try {

				if (connection.isInUse()) {

					estatus = EStatus.IN_USE;

					IConnectionType connectionType = connection.getConnectionType();

					if (connectionType instanceof SerialConnectionType ||

							connectionType instanceof USBConnectionType)

						message = MessageFormat.format(PORT_IN_USE, 

								connection.getSettings().get(SerialConnectionSettings.PORT));

					else if (connectionType instanceof TCPIPConnectionType)

						message = MessageFormat.format(TCPIP_IN_USE, 

								connection.getSettings().get(TCPIPConnectionFactory.IP_ADDRESS),

								connection.getSettings().get(TCPIPConnectionFactory.IP_PORT));

				}

				else {

					didTest = true;

					connection.setServiceTestingAndInUse(true);

					Version deviceVersion = getTRKVersionFromDevice();

					if (deviceVersion != null) {

						estatus = EStatus.UP;

						Version serverVersion = getLatestVersionFromServer();

						if (serverVersion == null) {

							message = MessageFormat.format(OK_STATUS, deviceVersion);

						}

						else if (deviceVersion.compareTo(serverVersion) >= 0) {

							message = MessageFormat.format(IS_LASTEST, deviceVersion);

						}

						else {

							message = MessageFormat.format(NEEDS_INSTALL,

											deviceVersion, serverVersion);

						}

					}

				}

			} 

			catch (Exception e) {

				message = ERROR + e.getMessage();

				estatus = EStatus.DOWN;

			}

			finally {

				if (didTest)

					connection.setServiceTestingAndInUse(false);

			}

		}

		monitor.done();

		return new TestResult(estatus, getShortDescription(estatus), message);

	}

	public void setDeviceOS(String familyName, Version version) {

		deviceOS = new Pair<String, Version>(familyName, version);

	}

}