package com.vci.server.workflow.event;

import java.util.HashMap;
import java.util.Map;

import org.jbpm.api.listener.EventListenerExecution;

import com.vci.corba.omd.data.BusinessObject;
import com.vci.corba.omd.lcm.LifeCycle;
import com.vci.corba.omd.lcm.LifeCycleServicePrx;
import com.vci.corba.omd.lcm.TransitionVO;
import com.vci.server.base.utility.ServerServiceProvider;


/// 返回编制中状态
public class ReturnInitialStatus extends TransferStatus {

	private static final long serialVersionUID = -8416047141287575412L;
	
	/**
	 * 返回是否是流程终止而触发当前事件
	 * @param e
	 * @return
	 */
	protected boolean isIntermitting(EventListenerExecution e){
		boolean res = false;
		String intermit = (String) e.getProcessInstance().getVariable("intermit");
		// 平台规则：当全仅当 intermit 的值等于true时，才代表是执行‘流程中止’
		if(intermit != null && !"".equals(intermit) && "true".equals(intermit)){
			res = true;
		}
		return res;
	}
	
	@Override
	public void doEvent(EventListenerExecution e) throws Exception {
		// 普通跃迁事件，当且仅当是非‘流程终止’时才执行
		if(isIntermitting(e)){
			doEventDetail(e);
		}
	}
	
	
	protected void doEventDetail(EventListenerExecution e) throws Exception{
		// 设置目标跃迁状态
		setTargetStatus("Editing");
		
		// 取出流程里关联的数据
		BusinessObject[] bos = super.getBusinessObjects();
		// 取出生命周期名称
		String lcName = bos[0].lctId;
		// 构建跃迁数据
		TransitionVO[] vos = new TransitionVO[bos.length];
		String[] releaseStatus = new String[bos.length];
		
		String tagStatus = "Editing";
		
		LifeCycleServicePrx lcService = ServerServiceProvider.getOMDService().getLifeCycleService();
		LifeCycle[] lcs = lcService.getLifeCycles();
		
		Map<String, LifeCycle> mapLC = new HashMap<String, LifeCycle>();
		for (LifeCycle lc : lcs) {
			mapLC.put(lc.id, lc);
		}
		
		for (int i = 0; i < bos.length; i++) {
			LifeCycle lc = mapLC.get(bos[i].lctId);
			if(lc == null){
				throw new IllegalArgumentException("对象生命周期模型定义异常，没找到对应的生命周期模型定义信息");
			}
			
			tagStatus = lc.startState;
			
			TransitionVO targetTVO = getTransitionVO(lc, bos[i].lcStatus, tagStatus);
			if(targetTVO == null){
				throw new IllegalArgumentException("跃迁业务对象生命周期状态异常：'targetStatus' 的参数值 '" + tagStatus + "' 无效，在生命周期 '" + lcName + "' 里不存在。" +
						" 或者是生命周期里从 '" + bos[i].lcStatus + "' 到 '" + tagStatus + "' 之间的连线不存在，无法进行跃迁!");
			}
			vos[i] = targetTVO;
			// 设置发发布状态值，此事件里值为空（即，不发布，仅做跃迁
			releaseStatus[i] = "";
		}
		
		// 执行跃迁及发布
		ServerServiceProvider.getBOFService().batchTransferBusinessObjectAndRelease(bos, vos, releaseStatus);
	}
	
	
	/**
	 * 查询生命周期节点
	 * @param lcName 生命周期名称
	 * @param lcDestStatus 状态
	 * @return
	 */
	protected TransitionVO getTransitionVO(LifeCycle lc, String fromStatus,String toStatus) {
		if (lc == null || fromStatus == null || toStatus == null) {
			return null;
		}
		
		fromStatus = fromStatus.trim();
		toStatus = toStatus.trim();
		
		for (int i = 0; i < lc.routes.length; ++i) {
			TransitionVO route = lc.routes[i];
			if (route.destination.equals(toStatus) && route.source.equals(fromStatus)){
				return route;
			}
		}

		return null;
	}
}