/**
 * Tencent is pleased to support the open source community by making Tars available.
 *
 * Copyright (C) 2016THL A29 Limited, a Tencent company. All rights reserved.
 *
 * Licensed under the BSD 3-Clause License (the "License"); you may not use this file except 
 * in compliance with the License. You may obtain a copy of the License at
 *
 * https://opensource.org/licenses/BSD-3-Clause
 *
 * 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.
 */

#ifndef __SERVER_COMMAND_H_
#define __SERVER_COMMAND_H_

#include "ServerObject.h"
#include "NodeServer.h"

class StatExChange;

typedef TC_AutoPtr<StatExChange> StatExChangePtr;

class ServerCommand : public TC_HandleBase
{
public:
 enum ExeStatus
 { 
 EXECUTABLE, //可以运行
 DIS_EXECUTABLE, //不可以运行
 NO_NEED_EXECUTE //不需要运行
 };
public:
 virtual ~ServerCommand(){}

 virtual ExeStatus canExecute(string &sResult){ return EXECUTABLE;}

 virtual int execute(string &sResult) = 0;

 virtual int doProcess()
 {
 string s ;
 return doProcess(s);
 }

 virtual int doProcess(string &sResult)
 {
 ExeStatus t = canExecute(sResult);
 if(t == DIS_EXECUTABLE)
 {
 return -1;
 }
 else if(t == NO_NEED_EXECUTE)
 {
 return 0;
 }

 return execute(sResult);
 }

 virtual int doProcess(const TarsCurrentPtr current,string &sResult, bool bValid=true)
 {
 if( bValid && g_app.isValid(current->getIp()) == false )
 {
 sResult = " erro:ip "+ current->getIp()+" is invalid";
 return -1;
 }

 return doProcess(sResult);
 } 
};


class StatExChange : public TC_HandleBase
{
public:

 /**
 * 构造函数
 * @param pServerObjectPtr ServerObject指针
 * @param eState1 状态1,构造时设置pServerObjectPtr 状态为state1
 * @param eState2 状态2,析构时设置pServerObjectPtr 状态为state2
 */
 StatExChange( const ServerObjectPtr& pServerObjectPtr, ServerObject::InternalServerState eState1, ServerObject::InternalServerState eState2 )
 {
 _serverObjectPtr = pServerObjectPtr;
 _state1 = eState1;
 _state2 = eState2;
 _serverObjectPtr->setState( _state1 );
 }

 /**
 * 析够
 */
 ~StatExChange()
 {
 _serverObjectPtr->setState( _state2 );
 }

private:
 ServerObject::InternalServerState _state1;
 ServerObject::InternalServerState _state2;
 ServerObjectPtr _serverObjectPtr;
};

#endif