/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jbpm.db;

import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;

import org.jbpm.graph.def.Node;
import org.jbpm.graph.def.ProcessDefinition;
import org.jbpm.graph.exe.ProcessInstance;
import org.jbpm.taskmgmt.def.Task;
import org.jbpm.taskmgmt.def.TaskMgmtDefinition;
import org.jbpm.taskmgmt.exe.TaskInstance;
import org.jbpm.taskmgmt.exe.TaskMgmtInstance;

public class TaskMgmtSessionDbTest extends AbstractDbTestCase {

  ProcessInstance processInstance;
  TaskMgmtInstance taskMgmtInstance;

  protected void setUp() throws Exception {
    super.setUp();

    TaskMgmtDefinition taskMgmtDefinition = new TaskMgmtDefinition();
    taskMgmtDefinition.addTask(new Task("laundry"));
    taskMgmtDefinition.addTask(new Task("dishes"));

    ProcessDefinition processDefinition = new ProcessDefinition("housework");
    processDefinition.addDefinition(taskMgmtDefinition);
    deployProcessDefinition(processDefinition);

    processInstance = new ProcessInstance(processDefinition);
    processInstance = saveAndReload(processInstance);
    taskMgmtInstance = processInstance.getTaskMgmtInstance();
  }

  public void testFindTaskInstancesByActorId() {
    taskMgmtInstance.addTaskInstance(new TaskInstance("laundry", "me"));
    taskMgmtInstance.addTaskInstance(new TaskInstance("dishes", "me"));
    taskMgmtInstance.addTaskInstance(new TaskInstance("vacation", "the other guy"));

    processInstance = saveAndReload(processInstance);

    List taskInstances = taskMgmtSession.findTaskInstances("me");
    assertEquals(2, taskInstances.size());
    TaskInstance taskInstanceOne = (TaskInstance) taskInstances.get(0);
    TaskInstance taskInstanceTwo = (TaskInstance) taskInstances.get(1);
    assertEquals("me", taskInstanceOne.getActorId());
    assertEquals("me", taskInstanceTwo.getActorId());
    assertNotSame(taskInstanceOne, taskInstanceTwo);
  }

  public void testFindTaskInstancesByActorIds() {
    taskMgmtInstance.addTaskInstance(new TaskInstance("laundry", "me"));
    taskMgmtInstance.addTaskInstance(new TaskInstance("dishes", "me"));
    taskMgmtInstance.addTaskInstance(new TaskInstance("write software", "me"));
    taskMgmtInstance.addTaskInstance(new TaskInstance("vacation", "the other guy"));
    taskMgmtInstance.addTaskInstance(new TaskInstance("try", "a nobody"));
    taskMgmtInstance.addTaskInstance(new TaskInstance("pretend", "a nobody"));

    processInstance = saveAndReload(processInstance);

    List taskInstances = taskMgmtSession.findTaskInstances(new String[] { "me", "the other guy" });
    assertEquals(4, taskInstances.size());
  }

  public void testLoadTaskInstance() {
    TaskInstance taskInstance = new TaskInstance("laundry", "me");
    taskMgmtInstance.addTaskInstance(taskInstance);

    processInstance = saveAndReload(processInstance);

    taskInstance = taskMgmtSession.loadTaskInstance(taskInstance.getId());
    assertNotNull(taskInstance);
  }

  public void testTaskMgmtFinderMethods() {
    ProcessDefinition processDefinition = ProcessDefinition.parseXmlString("<process-definition name='searchable'>"
        + "  <start-state>"
        + "    <transition to='f'/>"
        + "  </start-state>"
        + "  <fork name='f'>"
        + "    <transition name='washing' to='collectLaundry'/>"
        + "    <transition name='cleaning' to='cleanToilets'/>"
        + "  </fork>"
        + "  <task-node name='collectLaundry'>"
        + "    <task name='getLaundryFromBasket' />"
        + "    <task name='askHusbandWhereHeDumpedHisClothes' />"
        + "    <task name='lookUnderChildrensBeds' />"
        + "  </task-node>"
        + "  <task-node name='cleanToilets'>"
        + "    <task name='cleanToilets'/>"
        + "  </task-node>"
        + "</process-definition>");
    deployProcessDefinition(processDefinition);

    ProcessInstance processInstance = jbpmContext.newProcessInstance("searchable");
    processInstance.signal();

    processInstance = saveAndReload(processInstance);

    List taskInstances = taskMgmtSession.findTaskInstancesByProcessInstance(processInstance);
    Set collectedTaskInstanceNames = new HashSet();
    for (Iterator iter = taskInstances.iterator(); iter.hasNext();) {
      TaskInstance taskInstance = (TaskInstance) iter.next();
      collectedTaskInstanceNames.add(taskInstance.getName());
    }

    Set expectedTaskInstanceNames = new HashSet();
    expectedTaskInstanceNames.add("getLaundryFromBasket");
    expectedTaskInstanceNames.add("askHusbandWhereHeDumpedHisClothes");
    expectedTaskInstanceNames.add("lookUnderChildrensBeds");
    expectedTaskInstanceNames.add("cleanToilets");

    assertEquals(expectedTaskInstanceNames, collectedTaskInstanceNames);

    List nodes = graphSession.findActiveNodesByProcessInstance(processInstance);
    Set collectedNodeNames = new HashSet();
    for (Iterator iter = nodes.iterator(); iter.hasNext();) {
      Node node = (Node) iter.next();
      collectedNodeNames.add(node.getName());
    }

    Set expectedNodeNames = new HashSet();
    expectedNodeNames.add("collectLaundry");
    expectedNodeNames.add("cleanToilets");

    assertEquals(expectedNodeNames, collectedNodeNames);
  }
}