org.nuxeo.google.task.Publisher.java Source code

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Here is the source code for org.nuxeo.google.task.Publisher.java

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/*
 * (C) Copyright 2016 Nuxeo SA (http://nuxeo.com/) and others.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Contributors:
 *     Michael Gena
 */

package org.nuxeo.google.task;

import java.io.IOException;
import java.security.GeneralSecurityException;
import java.util.GregorianCalendar;

import org.nuxeo.ecm.automation.OperationContext;
import org.nuxeo.ecm.automation.core.Constants;
import org.nuxeo.ecm.automation.core.annotations.Context;
import org.nuxeo.ecm.automation.core.annotations.Operation;
import org.nuxeo.ecm.automation.core.annotations.OperationMethod;
import org.nuxeo.ecm.automation.core.annotations.Param;
import org.nuxeo.ecm.automation.core.collectors.DocumentModelCollector;
import org.nuxeo.ecm.core.api.NuxeoException;
import org.nuxeo.ecm.core.api.DocumentModel;
import org.nuxeo.ecm.platform.oauth2.providers.OAuth2ServiceProvider;
import org.nuxeo.ecm.platform.oauth2.providers.OAuth2ServiceProviderRegistry;
import org.nuxeo.runtime.api.Framework;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleCredential;
import com.google.api.client.googleapis.javanet.GoogleNetHttpTransport;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.DateTime;
import com.google.api.services.tasks.Tasks;
import com.google.api.services.tasks.model.Task;

/**
 * @author Michael Gena
 */
@Operation(id = Publisher.ID, category = Constants.CAT_NOTIFICATION, label = "Publish on Google Tasks", description = "This operation lets you publish a task to a Google Tasks. The <code>userEmailAddress</code> is the e-mail address of the user who authorized an offline access to their tasks.")
public class Publisher {

    public static final String ID = "GoogleTaskPublisher";

    @Context
    protected OperationContext context;

    @Param(name = "userEmailAddress", required = true)
    String userEmailAddress = "";

    @Param(name = "title", required = true)
    String title = "";

    @Param(name = "notes", required = false)
    String notes = "";

    @Param(name = "dueDate", required = true)
    GregorianCalendar dueDate = new GregorianCalendar();

    @OperationMethod(collector = DocumentModelCollector.class)
    public DocumentModel run(DocumentModel input) {
        JsonFactory JSON_FACTORY = JacksonFactory.getDefaultInstance();
        HttpTransport httpTransport;
        try {
            httpTransport = GoogleNetHttpTransport.newTrustedTransport();

            OAuth2ServiceProvider serviceProvider = Framework.getLocalService(OAuth2ServiceProviderRegistry.class)
                    .getProvider("googledrive");
            Credential storedCredential = serviceProvider.loadCredential(userEmailAddress);

            Credential credential = new GoogleCredential.Builder()
                    .setClientSecrets(serviceProvider.getClientId(), serviceProvider.getClientSecret())
                    .setJsonFactory(JSON_FACTORY).setTransport(httpTransport).build()
                    .setRefreshToken(storedCredential.getRefreshToken())
                    .setAccessToken(storedCredential.getAccessToken());

            // Initialize Tasks service with valid OAuth credentials          
            Tasks service = new Tasks.Builder(httpTransport, JSON_FACTORY, credential).build();

            // Create a Task and publish it
            DateTime dueDateTime = new DateTime(dueDate.getTime());

            Task task = new Task().setTitle(title).setNotes(notes).setDue(dueDateTime);

            task = service.tasks().insert("@default", task).execute();
        } catch (GeneralSecurityException | IOException e) {
            throw new NuxeoException(e);
        }
        return input;
    }

}