com.zns.comicdroid.service.RestoreFromDriveService.java Source code

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Here is the source code for com.zns.comicdroid.service.RestoreFromDriveService.java

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/*******************************************************************************
 * Copyright (c) 2013 Ulrik Andersson.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Public License v3.0
 * which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/gpl.html
 * 
 * Contributors:
 *     Ulrik Andersson - initial API and implementation
 ******************************************************************************/
package com.zns.comicdroid.service;

import java.io.DataInputStream;
import java.io.IOException;
import java.util.Arrays;

import android.app.IntentService;
import android.content.Intent;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;

import com.google.api.client.extensions.android.http.AndroidHttp;
import com.google.api.client.googleapis.extensions.android.gms.auth.GoogleAccountCredential;
import com.google.api.client.http.GenericUrl;
import com.google.api.client.http.HttpResponse;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.services.drive.Drive;
import com.zns.comicdroid.Application;
import com.zns.comicdroid.data.DBHelper;
import com.zns.comicdroid.util.BackupUtil;
import com.zns.comicdroid.util.DriveUtil;

import de.greenrobot.event.EventBus;

public class RestoreFromDriveService extends IntentService {

    public RestoreFromDriveService() {
        super("ComicDroid restore service");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
        String account = prefs.getString(Application.PREF_DRIVE_ACCOUNT, null);

        com.google.api.services.drive.model.File gFileData = null;

        //Get Service
        Drive service = null;
        try {
            GoogleAccountCredential credential = GoogleAccountCredential.usingOAuth2(getApplicationContext(),
                    Arrays.asList(Application.DRIVE_SCOPE_BACKUP));
            credential.setSelectedAccountName(account);
            credential.getToken();
            service = new Drive.Builder(AndroidHttp.newCompatibleTransport(), new JacksonFactory(), credential)
                    .build();
            gFileData = DriveUtil.getFile(service, "appdata", GoogleDriveService.BACKUP_DATA_FILENAME);
        } catch (Exception e) {
            //Failed to get data from google drive
        }

        //-------------------------Restore Data------------------------------------
        if (gFileData != null && gFileData.getDownloadUrl() != null && gFileData.getDownloadUrl().length() > 0) {
            DBHelper db = DBHelper.getHelper(getApplicationContext());
            String imagePath = ((Application) getApplication()).getImagePath(true);
            DataInputStream in = null;
            try {
                //Get http response for data file
                HttpResponse response = service.getRequestFactory()
                        .buildGetRequest(new GenericUrl(gFileData.getDownloadUrl())).execute();
                in = new DataInputStream(response.getContent());
                //Restore data
                BackupUtil.RestoreDataFromStream(in, db, imagePath, getResources());
            } catch (Exception e) {
                //Restore failed
            } finally {
                if (in != null) {
                    try {
                        in.close();
                    } catch (IOException e) {
                    }
                }
            }
        } else {
            EventBus.getDefault().post(new ProgressResult(100, ""));
        }

        stopSelf();
    }
}