// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// 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 MESSAGEHANDLER_H
#define MESSAGEHANDLER_H

#include <string>
#include <stdio.h>
#include <limits.h>
#include <unistd.h>
#include <iostream>
#include <iomanip>

#include "Enclave.h"
#include "NetworkManagerServer.h"
#include "Messages.pb.h"
#include "UtilityFunctions.h"
#include "remote_attestation_result.h"
//#include "LogBase.h"
#include "../GeneralSettings.h"

using namespace std;
using namespace util;

class MessageHandler {

public:
    MessageHandler(int port = Settings::rh_port);
    virtual ~MessageHandler();

    sgx_ra_msg3_t* getMSG3();
    int init();
    void start();
    vector<string> incomingHandler(string v, int type);

private:
    sgx_status_t initEnclave();
    uint32_t getExtendedEPID_GID();

    void assembleAttestationMSG(Messages::AttestationMessage msg, ra_samp_response_header_t **pp_att_msg);
    string handleAttestationResult(Messages::AttestationMessage msg);
    void assembleMSG2(Messages::MessageMSG2 msg, sgx_ra_msg2_t **pp_msg2);
    string handleMSG2(Messages::MessageMSG2 msg);
    string handleMSG0(Messages::MessageMsg0 msg);
    string generateMSG1();
    string handleVerification();
    string generateMSG0();
    string createInitMsg(int type, string msg);

    string generateAttestationFailed(uint32_t id, sgx_ra_context_t context);
    string handlePsiHashData(Messages::MessagePsiHashData msg);
    string handlePsiHashDataFinished(Messages::MessagePsiHashDataFinished msg, bool* again);

protected:
    Enclave *enclave = NULL;

private:
    int busy_retry_time = 4;
    NetworkManagerServer *nm = NULL;

};

#endif