/* 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.
 */
package org.activiti.engine.test.api.task;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.activiti.engine.history.HistoricTaskInstance;
import org.activiti.engine.impl.test.PluggableActivitiTestCase;
import org.activiti.engine.runtime.ProcessInstance;
import org.activiti.engine.task.Task;
import org.activiti.engine.test.Deployment;

/**
 * @author Falko Menge
 */
public class DelegateTaskTest extends PluggableActivitiTestCase {

	/**
	 * @see <a href="https://activiti.atlassian.net/browse/ACT-380">https://activiti.atlassian.net/browse/ACT-380</a>
	 */
	@Deployment
	public void testGetCandidates() {
		runtimeService.startProcessInstanceByKey("DelegateTaskTest.testGetCandidates");

		Task task = taskService.createTaskQuery().singleResult();
		assertNotNull(task);

		@SuppressWarnings("unchecked")
		Set<String> candidateUsers = (Set<String>) taskService.getVariable(task.getId(),
				DelegateTaskTestTaskListener.VARNAME_CANDIDATE_USERS);
		assertEquals(2, candidateUsers.size());
		assertTrue(candidateUsers.contains("kermit"));
		assertTrue(candidateUsers.contains("gonzo"));

		@SuppressWarnings("unchecked")
		Set<String> candidateGroups = (Set<String>) taskService.getVariable(task.getId(),
				DelegateTaskTestTaskListener.VARNAME_CANDIDATE_GROUPS);
		assertEquals(2, candidateGroups.size());
		assertTrue(candidateGroups.contains("management"));
		assertTrue(candidateGroups.contains("accountancy"));
	}
	
	@Deployment
	public void testChangeCategoryInDelegateTask() {
		
		// Start process instance
		Map<String, Object> variables = new HashMap<String, Object>();
		variables.put("approvers", Arrays.asList("kermit")); //, "gonzo", "mispiggy"));
		ProcessInstance processInstance = runtimeService.startProcessInstanceByKey("delegateTaskTest", variables);
		
		// Assert there are three tasks with the default category
		List<Task> tasks = taskService.createTaskQuery().processInstanceId(processInstance.getId()).list();
		for (Task task : tasks) {
			assertEquals("approval", task.getCategory());
			Map<String, Object> taskVariables = new HashMap<String, Object>();
			taskVariables.put("outcome", "approve");
			taskService.complete(task.getId(), taskVariables, true);
		}
		
		// After completion, the task category should be changed in the script listener working on the delegate task
		assertEquals(0, taskService.createTaskQuery().processInstanceId(processInstance.getId()).count());
		for (HistoricTaskInstance historicTaskInstance : historyService.createHistoricTaskInstanceQuery().list()) {
			assertEquals("approved", historicTaskInstance.getCategory());
		}
	}

}