package com.gzzn.omms.msgexchangeapi.msghandler;

import java.lang.reflect.Method;
import java.util.Arrays;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import com.gzzn.omms.msgexchangeapi.entity.Cminmsg;
import com.gzzn.omms.msgexchangeapi.entity.CminmsgWapper;
import com.gzzn.omms.msgexchangeapi.entity.msg.MSG;
import com.gzzn.omms.msgexchangeapi.service.ICminmsgService;
import com.gzzn.omms.msgexchangeapi.service.exchange.IExchangeService;

@Service("msgHandlerDispatcher")
public class MsgHandlerDispatcher {
	private Logger logger = LoggerFactory.getLogger(MsgHandlerDispatcher.class);
	
	@Autowired
	IExchangeService exchangeService;
	
	@Autowired
	ICminmsgService cminmsgService;
	
	@Value("${msgExchange.ignoreMsg}")
	private String ignoreMsg;
	
    public HandlerResult dispatch(Cminmsg cminmsg)
    {
   	    try 
   	    {
   	    	//
   	    	MSG msg = exchangeService.xmlToMsg(cminmsg.getCminmsgsClobMsg());
   	    	CminmsgWapper cminmsgWapper = new CminmsgWapper(cminmsg);
   	    	cminmsgWapper.setMsg(msg);
   	    	
   	    	
   	   	    String type = msg.getMETA().getTYPE().name();
   	   	    String subType = msg.getMETA().getSTYP().name();
	   	   	if(!isNeedHandler(type,subType))
	   	   	{
				cminmsgService.updateBatchProcessed(Arrays.asList(cminmsg));//更新为已处理
	   	   	    logger.warn("消息type:{},subtype:{},设置不需要处理!",type,subType);
	   	   		return HandlerResult.success();
	   	   	}
   	   	    
   	    	Class  clazzHandler =  Class.forName(getHandlerClassName(type,subType));
   	    	Object classObject = clazzHandler.newInstance();
   	    	Method runMethod = clazzHandler.getMethod("run", CminmsgWapper.class);
   	    	HandlerResult result = (HandlerResult) runMethod.invoke(classObject, cminmsgWapper);
			return result;
		} catch (Exception e) {
			try 
	   	    {
				cminmsgService.updateBatchProcessed(Arrays.asList(cminmsg));//更新为已处理
				logger.error("消息处理失败msg:{},err:{}",cminmsg.getCminmsgsClobMsg(),e.getMessage());
	   	    }
			catch (Exception e1) {
				logger.error("消err:{}",e1.getMessage());
			}
			return HandlerResult.failure();
		}
    }//end function
    
    /**
     * 获取handler 类的名称
     * @param type
     * @param subType
     * @return
     */
    private String getHandlerClassName(String type , String subType)
    {
    	StringBuffer buffer = new StringBuffer();
    	buffer.append("com.gzzn.omms.msgexchangeapi.msghandler" );
    	buffer.append(".");
    	buffer.append(type.toLowerCase());
    	buffer.append(".");
    	buffer.append(subType);
    	buffer.append("Handler");
    	
    	
    	return buffer.toString();
    } //end function
    
    /**
     * 是否需要处理该消息
     * @param type 消息主类型
     * @param subType 消息子类型
     * @return true 需要处理 ,false 不需要处理
     */
    private boolean isNeedHandler(String type,String subType)
    {
    	if(StringUtils.isEmpty(ignoreMsg))
    	{
    		return true;// 所有消息均需要处理
    	}
    	
    	//
    	String typeToken = type + "-" + subType;
    	String typeTokenStar = type + "-*"; 
    	String ignoreMsgs[] = ignoreMsg.split(",");
    	for (String msg : ignoreMsgs) {
    		if(typeToken.equalsIgnoreCase(msg) || typeTokenStar.equalsIgnoreCase(msg))
    		{
    			return false; //不需要处理的消息逻辑
    		}
		}
    	
    	return true;
    } //end function
}