/*
 * Copyright (c) 2005-2014, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. licenses this file to you 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.
 */
package org.wso2.esb.integration.common.clients.tasks;

import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.impl.builder.StAXOMBuilder;
import org.apache.axis2.AxisFault;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.task.stub.TaskAdminStub;
import org.wso2.carbon.task.stub.TaskManagementException;
import org.wso2.esb.integration.common.clients.client.utils.AuthenticateStub;

import javax.activation.DataHandler;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import java.io.IOException;
import java.rmi.RemoteException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class TaskAdminClient {
    private static final Log log = LogFactory.getLog(TaskAdminClient.class);

    private final String serviceName = "TaskAdmin";
    private TaskAdminStub taskAdminStub;

    public TaskAdminClient(String backEndUrl, String sessionCookie) throws AxisFault {
        String endPoint = backEndUrl + serviceName;
        taskAdminStub = new TaskAdminStub(endPoint);
        AuthenticateStub.authenticateStub(sessionCookie, taskAdminStub);
    }

    public TaskAdminClient(String backEndUrl, String userName, String password) throws AxisFault {
        String endPoint = backEndUrl + serviceName;
        taskAdminStub = new TaskAdminStub(endPoint);
        AuthenticateStub.authenticateStub(userName, password, taskAdminStub);
    }

    public void addTask(DataHandler dh)
            throws TaskManagementException, IOException, XMLStreamException {

        XMLStreamReader parser = XMLInputFactory.newInstance().createXMLStreamReader(dh.getInputStream());
        //create the builder
        StAXOMBuilder builder = new StAXOMBuilder(parser);
        OMElement scheduleTaskElem = builder.getDocumentElement();
        // scheduleTaskElem.setText("test");
        taskAdminStub.addTaskDescription(scheduleTaskElem);
    }

    public void addTask(OMElement scheduleTaskElem)
            throws TaskManagementException, RemoteException {
        taskAdminStub.addTaskDescription(scheduleTaskElem);
    }

    public void deleteTask(String name, String group)
            throws TaskManagementException, RemoteException {
        taskAdminStub.deleteTaskDescription(name, group);

    }

    public void updateTask(OMElement omElement) throws RemoteException, TaskManagementException {
        taskAdminStub.editTaskDescription(omElement);
    }

    public OMElement getScheduleTask(String name, String group)
            throws TaskManagementException, RemoteException {
        return (OMElement) taskAdminStub.getTaskDescription(name, group);

    }

    public OMElement getAllTaskDescriptions() throws RemoteException, TaskManagementException {
        return (OMElement) taskAdminStub.getAllTaskDescriptions(null);
    }

    public List<String> getScheduleTaskList() throws RemoteException, TaskManagementException {
        ArrayList<String> taskList = new ArrayList();
        OMElement tasksOme = getAllTaskDescriptions().getFirstElement();
        if (tasksOme != null) {
            Iterator<OMElement> itr = tasksOme.getChildrenWithName(new QName("task"));
            while (itr.hasNext()) {
                OMElement taskOme = itr.next();
                taskList.add(taskOme.getAttributeValue(new QName("name")));
            }
        }
        return taskList;
    }

}