package com.vci.server.workflow.server.event;

import java.util.List;
import java.util.Map;

import org.jbpm.api.Configuration;
import org.jbpm.api.Execution;
import org.jbpm.api.ProcessEngine;
import org.jbpm.api.TaskService;
import org.jbpm.api.model.OpenExecution;
import org.jbpm.api.task.Assignable;
import org.jbpm.api.task.AssignmentHandler;
import org.jbpm.api.task.Participation;
import org.jbpm.pvm.internal.env.EnvironmentImpl;
import org.jbpm.pvm.internal.history.HistoryEvent;
import org.jbpm.pvm.internal.history.events.TaskActivityStart;
import org.jbpm.pvm.internal.history.model.HistoryTaskImpl;
import org.jbpm.pvm.internal.model.ActivityImpl;
import org.jbpm.pvm.internal.model.ExecutionImpl;
import org.jbpm.pvm.internal.session.DbSession;
import org.jbpm.pvm.internal.task.TaskImpl;
import org.jbpm.pvm.internal.util.Clock;

public class AssignTask implements AssignmentHandler {

	private static final long serialVersionUID = 1L;
	List<String> participants;
	ProcessEngine processEngine = Configuration.getProcessEngine();
	TaskService taskService = processEngine.getTaskService();

	@SuppressWarnings("unchecked")
	public void assign(Assignable assignable, OpenExecution execution) throws Exception {
		String activityName = ((ExecutionImpl) execution).getActivityName();
		String pid = execution.getProcessInstance().getId();
		List taskList = taskService.createTaskQuery().processInstanceId(pid).activityName(activityName).list();
//        Task task = null ;
		DbSession dbSession = EnvironmentImpl.getFromCurrent(DbSession.class);
		TaskImpl task = null;
		for (int i = 0; i < taskList.size(); i++) {
			task = (TaskImpl) taskList.get(i);
			if (task.getActivityName().equals(activityName)) {
				break;
			}
		}
		participants = (List<String>) taskService.getVariable(task.getId(), "participants");
		///创建子任务的时候，需要把父任务的变量都拷贝过去
		Map<String,Object> variables = task.getVariables();
		HistoryTaskImpl ht = dbSession.get(HistoryTaskImpl.class, task.getDbid());
		int i = 1;
		if (participants != null) {
			for (String participant : participants) {
//                Task subTask=((OpenTask) task).createSubTask();  
//                subTask.setName(task.getActivityName()+"-处理"+i);
//                subTask.setPriority(1);
//                subTask.setAssignee(participant); 
//                //关联主任务 
//                taskService.addTaskParticipatingUser(task.getId(), participant, Participation.CLIENT);
				TaskImpl subTask = task.createSubTask();
//            	subTask.setName(task.getActivityName()+"-处理"+i);
				subTask.setName(task.getActivityName());
				subTask.setPriority(1);
				subTask.setAssignee(participant);
				subTask.setVariables(variables);

				ExecutionImpl exc = ((ExecutionImpl) execution).createExecution();
				ActivityImpl activity = ((ExecutionImpl) execution).getActivity();
				activity.setType("subTask");
			
				exc.setActivity(activity);
				exc.setState(Execution.STATE_ACTIVE_CONCURRENT);
				exc.setHistoryActivityStart(Clock.getCurrentTime());
				subTask.setExecution(exc);

				HistoryEvent.fire(new TaskActivityStart(subTask), exc);
//              ht.addSubTask(dbSession.get(HistoryTaskImpl.class, subTask.getDbid()));

				taskService.addTaskParticipatingUser(task.getId(), participant, Participation.CLIENT);
				i++;
			}
		}
	}
}