/*

* 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.uninstall.steps;

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

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

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

import com.nokia.mj.impl.installer.storagehandler.OtaStatusHandler;

import com.nokia.mj.impl.installer.storagehandler.OtaStatusNotification;

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

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

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

import com.nokia.mj.impl.utils.exception.InstallerExceptionBase;

/**

 * Uninstallation step for sending OTA status notifications.

 * This is the first and the last step in uninstallation execution table.

 * This execution step may not throw any exceptions.

 */

public class SendOtaStatus extends ExeStep

{

    private static final String NOTIFY_ATTR_NAME = "MIDlet-Delete-Notify";

    public void execute(ExeBall aBall)

    {

        UninstallBall ball = (UninstallBall)aBall;

        if (ball.iSuite == null)

        {

            // Do nothing when called as the first installation step.

            return;

        }

        if (ball.iArgs.get("skipotastatus") != null)

        {

            Log.log("Skipping OTA status handling");

            return;

        }

        String notifyUrl = ball.iSuite.getAttributeValue(NOTIFY_ATTR_NAME);

        if (notifyUrl != null)

        {

            if (!NotificationPoster.isNotificationUrl(notifyUrl))

            {

                Log.logWarning("Ignoring not supported " + NOTIFY_ATTR_NAME +

                               " url: " + notifyUrl);

                return;

            }

            // Notify url is present and valid, create and save notification

            // for future posting.

            OtaStatusNotification notification = new OtaStatusNotification

            (ball.iSuite.getUid(), System.currentTimeMillis(),

             OtaStatusNotification.TYPE_UNINSTALL,

             OtaStatusCode.DELETION_NOTIFICATION,

             notifyUrl, 0, 0);

            sendNotification(ball, notification);

        }

    }

    public void cancel(ExeBall aBall)

    {

        UninstallBall ball = (UninstallBall)aBall;

        if (ball.iSuite == null)

        {

            // Do nothing if called when suite info is not yet available.

            return;

        }

        // Cancel method for the last execution step never gets called,

        // so when this method is called we are cancelling the first

        // step.

        // Uninstallation has failed and OTA status notification

        // for uninstallation should only be sent when uninstallation

        // has succeeded so do nothing here.

    }

    private void sendNotification(UninstallBall aBall,

                                  OtaStatusNotification aNotification)

    {

        if (aBall == null || aNotification == null)

        {

            return;

        }

        try

        {

            // Always send uninstall notification right away.

            aBall.log("Sending OTA status notification...");

            aBall.getNotificationPoster().notifyStatus(aNotification);

        }

        catch (Exception e)

        {

            Log.logError("SendOtaStatus.sendNotification failed", e);

        }

    }

}