/**
 * 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 __REQUEST_DECODE_H__
#define __REQUEST_DECODE_H__
#include <iostream>
#include "util/tc_thread.h"
#include "util/tc_mysql.h"
#include "servant/StatF.h"
#include "util/tc_common.h"
#include "servant/TarsLogger.h"
#include "util/tc_thread.h"
#include "../../thirdparty/rapidjson/include/rapidjson/document.h"
#include "../../thirdparty/rapidjson/include/rapidjson/writer.h"
#include "../../thirdparty/rapidjson/include/rapidjson/stringbuffer.h"

using namespace rapidjson;

class RequestDecoder
{
public:
 static string getLine(const char** ppChar);
public:
 enum Op
 {
 SET,
 ADD,
 SUB,
 EQ,
 NE,
 GT,
 LT,
 LE,
 GE,
 LIMIT,
 };

 enum METHOD
 {
 QUERY = 0,
 TIMECHECK,
 };
 RequestDecoder(const string& input);

 ~RequestDecoder();

 int parseCondition(const string& sCond, string& value);

 /**
 * 从vCond中解析出field对应的值
 *
 */
 int find_field(vector<string>& vCond, const string& field /*f_tflag, f_date*/, string& value );

 int decode();

 int decodeDataid();

 int decodeMethod();

 int decodeArray(const string& arr, vector<string> &vFields);

 int addUid(const string& sUid);

 map<string, string>& getSql();

 int composeSqlPartition();

 string getQuerySlaveName() { return _slaveName; }

 int generateVector(Document &d ,const string s,std::vector<string> &v);

private:
 //待解析的json请求串
 string _input;

 //解析json得到的数据库查询slave_name
 string _slaveName;

 //解析json请求串得到的Dom 文件
 Document _req;

 //解析json得到的数据库查询条件值
 map<string, string> _sql;
};
#endif