/*

* 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 "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.mj.impl.installer.midp2.install.steps;

import com.nokia.mj.impl.installer.downloader.Downloader;

import com.nokia.mj.impl.installer.downloader.DownloadInfo;

import com.nokia.mj.impl.installer.exetable.ExeBall;

import com.nokia.mj.impl.installer.exetable.ExeStep;

import com.nokia.mj.impl.installer.utils.FileUtils;

import com.nokia.mj.impl.installer.utils.InstallerException;

import com.nokia.mj.impl.installer.utils.Log;

import com.nokia.mj.impl.utils.InstallerErrorMessage;

import com.nokia.mj.impl.utils.InstallerDetailedErrorMessage;

import com.nokia.mj.impl.utils.OtaStatusCode;

/**

 * Installation step DownloadJar takes care of downloading Jar file.

 */

public class DownloadJar extends ExeStep

{

    public void execute(ExeBall aBall)

    {

        InstallBall ball = (InstallBall)aBall;

        if (ball.iJarFilename != null)

        {

            // Jar file is already present, no need to download it.

            return;

        }

        if (ball.iDownloader != null)

        {

            // Download has already been started, do not start it again.

            return;

        }

        if (ball.iJarUrl == null)

        {

            // Deduct jar url from jad file MIDlet-Jar-URL

            // attribute and possibly from jad and sourceurl

            // command line options. Jar url must be deducted

            // before user confirmation dialog is displayed so

            // that if there is an error in the url it is

            // displayed to user before confirmation is asked.

            String attrName = "MIDlet-Jar-URL";

            ball.iJarUrl = ball.getAttributeValue(attrName);

            if (!Downloader.isDownloadUrl(ball.iJarUrl))

            {

                if (!Downloader.isDownloadUrl(ball.iSourceUrl))

                {

                    ball.iSourceUrl = ball.iJadUrl;

                }

                if (Downloader.isDownloadUrl(ball.iSourceUrl))

                {

                    int lastIndex = ball.iSourceUrl.lastIndexOf('/');

                    if (lastIndex >= 0)

                    {

                        ball.iJarUrl =

                            ball.iSourceUrl.substring(0, lastIndex + 1) +

                            ball.iJarUrl;

                    }

                }

                else

                {

                    // Couldn't deduct valid download url.

                    throw new InstallerException

                    (InstallerErrorMessage.INST_NO_NET, null,

                     InstallerDetailedErrorMessage.ATTR_HANDLING_FAILED,

                     new String[] { attrName },

                     OtaStatusCode.INVALID_DESCRIPTOR);

                }

            }

        }

        if ((ball.iIap == null || ball.iIap.equals("0")) &&

                (ball.iSnap == null || ball.iSnap.equals("0")) &&

                ball.iUserConfirmation == null)

        {

            // Download can only be started if IAP is known, or if the

            // user has answered to installation confirmation dialog.

            return;

        }

        if (!ball.iAllowDownload)

        {

            InstallerException.internalError("Downloading is disabled");

        }

        if (ball.iJarUrl != null)

        {

            try

            {

                // Get temp file name for jar file download.

                // Jar file must be downloaded to temp file

                // because old jar file can still be in use.

                ball.iJarFilename = ball.iIntegrityService

                                    .createTempFile(ball.iInstallationDrive, ".tmp");

                // Downloaded file will be moved, not copied.

                ball.iMoveInstallationFile = true;

                // Start download.

                if (ball.iDlListener == null)

                {

                    ball.iDlListener = new DlListener(ball);

                }

                ball.iDownloader = ball.getDownloader(ball.iDlListener);

                DownloadInfo dlInfo = new DownloadInfo

                (ball.iJarUrl, ball.iJarFilename);

                // Set expected download size.

                String jarSize = "MIDlet-Jar-Size";

                if (ball.attributeExists(jarSize))

                {

                    dlInfo.setExpectedSize(ball.getAttributeIntValue(jarSize));

                }

                ball.iDownloader.start(dlInfo);

                // Uncomment next line if posting of pending OTA status

                // notifications are to be made in parallel with jar download.

                //ball.startToPostPendingNotifications();

                // Download completion is waited in separate

                // WaitForDownload step.

            }

            catch (Exception ex)

            {

                InstallerException.internalError

                ("Unexpected error during Jar download", ex);

            }

        }

    }

    public void cancel(ExeBall aBall)

    {

        // nop

    }

}