#include "otaclient.h"

#include <iostream>

#include <QFile>
#include <QDir>

#include <thread>

#include "md5file.h"

#include "xmlparam.h"

#ifndef UBUNTU1604
#include "ivlog.h"

extern iv::Ivlog * givlog;
#endif

extern std::string gstrserverip;//"123.57.212.138";
extern std::string gstrserverport;//"9000";
extern std::string gstrwaitnettime;

otaclient::otaclient()
{
    mstrserverip = gstrserverip;
    mstrserverport = gstrserverport;
    iv::xmlparam::Xmlparam xp("./vin.xml");
    std::string strvin = xp.GetParam("VIN","AAAAAAAAAAAAAAAAA");
    std::string strvehicletype = xp.GetParam("VehicleType","");
    if(strvehicletype == "")
    {
        mbInitOK = false;
        std::cout<<"xml not found"<<std::endl;
#ifndef UBUNTU1604
        givlog->warn("xml not found");
#endif
        return;
    }
    mstrVIN = strvin;
    mstrVehicleType = strvehicletype;
    std::cout<<"vin:"<<mstrVIN<<std::endl;
    std::cout<<"VehicleType:"<<mstrVehicleType<<std::endl;

    QFile xFile;
    QByteArray ba;
    xFile.setFileName("./version");
    if(xFile.open(QIODevice::ReadOnly))
    {
        ba = xFile.readAll();
        mstrVersion = ba.toStdString();
        while(mstrVersion.size()>0)
        {
            if(mstrVersion.at(mstrVersion.size() -1) == '\n')
            {
                mstrVersion.erase(mstrVersion.size()-1,1);
            }
            else
            {
                break;
            }
        }
        std::cout<<"version:"<<mstrVersion<<std::endl;
    }
    else
    {
        std::cout<<"version file is not exist."<<std::endl;
//        givlog->warn("version file not found");
        mbInitOK = false;
    }
    xFile.close();
}

void otaclient::run()
{
    if(mbInitOK == false)
    {
        std::cout<<"Init Fail. so not connect server."<<std::endl;
#ifndef UBUNTU1604
        givlog->warn("Init Fail. so not connect server.");
#endif
        return;
    }

    int mswait = atoi(gstrwaitnettime.data());

    msleep(mswait);

    std::string target_str =mstrserverip +":";
    target_str = target_str + mstrserverport ;//std::to_string()
    auto cargs = grpc::ChannelArguments();
    cargs.SetMaxReceiveMessageSize(1024 * 1024 * 1024); // 1 GB
    cargs.SetMaxSendMessageSize(1024 * 1024 * 1024);

    std::shared_ptr<Channel> channel = grpc::CreateCustomChannel(
             target_str, grpc::InsecureChannelCredentials(),cargs);

    std::unique_ptr<iv::OTA::Stub> stub_ = iv::OTA::NewStub(channel);

    iv::ota::queryReply xReply;

    iv::ota::queryreq xReq;
    xReq.set_strversion(mstrVersion.data(),mstrVersion.size());
    xReq.set_strvehicletype(mstrVehicleType.data(),mstrVehicleType.size());
    xReq.set_strvin(mstrVIN.data(),mstrVIN.size());
    ClientContext context ;

    bool bNeedUpdate = false;

    Status status = stub_->query(&context, xReq, &xReply);
    if (status.ok()) {
        std::cout<<" query successfully"<<std::endl;
        if(xReply.bupdate() == 1)
        {
            bNeedUpdate = true;
        }
    } else {
      std::cout << status.error_code() << ": " << status.error_message()
                << std::endl;
      std::cout<<"RPC failed"<<std::endl;
#ifndef UBUNTU1604
      givlog->warn("ota RPC Failed");
#endif
      std::this_thread::sleep_for(std::chrono::milliseconds(900));
      return;

    }

    if(bNeedUpdate  == false)
    {
        std::cout<<"Not Need Update."<<std::endl;
       return;
    }


    std::cout<<"version:"<<xReply.strversion()<<std::endl;
    std::cout<<"   file  size : "<<xReply.nfilesize()<<std::endl;
    std::cout<<"   md5: "<<xReply.strmd5()<<std::endl;


    QByteArray baFile;

    iv::ota::Filereq xFilereq;
    iv::ota::FileReply xFileReply;
    xFilereq.set_strversion(mstrVersion.data(),mstrVersion.size());
    xFilereq.set_strvehicletype(mstrVehicleType.data(),mstrVehicleType.size());
    xFilereq.set_strvin(mstrVIN.data(),mstrVIN.size());


    const qint64 nFilePacMaxSize = 10000000;//10M per packet.

    bool bComplete = false;

    qint64 nPos = 0;

    while(bComplete == false)
    {
        ClientContext context2;
        xFilereq.set_nsize(nFilePacMaxSize);
        xFilereq.set_npos(nPos);
        Status status2 = stub_->downfile(&context2, xFilereq, &xFileReply);
        if (status2.ok()) {
//            std::cout<<" down successfully"<<std::endl;
            if(xFileReply.bupdate() == 1)
            {
                std::cout<<"file ok. size: "<<xFileReply.xdata().size()<<" pos:"<<nPos<<std::endl;
#ifndef UBUNTU1604
                givlog->verbose("file ok.size: %ld pos: %ld",xFileReply.xdata().size(),nPos);
#endif
                nPos = nPos + xFileReply.nsize();
                baFile.append(xFileReply.xdata().data(),xFileReply.xdata().size());
                if(xFileReply.blastpac())
                {

                    bComplete = true;
                }
            }
            else
            {
                break;
            }
        } else {
            std::cout << status2.error_code() << ": " << status2.error_message()
                      << std::endl;
            std::cout<<"RPC failed"<<std::endl;

 #ifndef UBUNTU1604
            givlog->warn("ota download file RPC Failed");
 #endif
            std::this_thread::sleep_for(std::chrono::milliseconds(900));
            break;
        }
    }

    QDir xDir;
    if(bComplete)
    {
        if((xFileReply.nfilesize() == nPos)&&(baFile.size() == nPos))
        {
            qDebug("down file succesfully.");
            QFile xFile;
            std::string strfilepath = "./../temp.zip";
            std::string strfileupdate = "./../update.zip";
            xFile.setFileName(strfilepath.data());
            if(xFile.open(QIODevice::ReadWrite))
            {
                xFile.write(baFile);
                xFile.close();
                std::string strfilemd5 = getFileMD5(strfilepath);
                std::cout<<" calc md5 is "<<strfilemd5<<std::endl;
                if(strfilemd5 == xFileReply.strmd5())
                {
                    qDebug("file md5 ok");
#ifndef UBUNTU1604
                    givlog->verbose("file md5 ok");
#endif

                    QString oldname = strfilepath.data();
                    QString newname = strfileupdate.data();
                    QFile xFileold;
                    xFileold.setFileName(newname);
                    bool bCanRename = true;
                    if(xFileold.exists())
                    {
                        if(xDir.remove(newname))
                        {

                        }
                        else
                        {
                            bCanRename = false;
                            qDebug("can't remove old file. FAIL.");
#ifndef UBUNTU1604
                            givlog->warn("can't remove old file. FAIL.");
#endif
                        }
                    }
                    if(bCanRename)
                    {
                        bool bRename = xDir.rename(oldname,newname);
                        if(bRename)
                        {
                            qDebug("Successfully  rename to update.zip.");
#ifndef UBUNTU1604
                            givlog->verbose("Successfully  rename to update.zip.");
#endif
                        }
                        else
                        {
                            qDebug("Fail rename to update.zip.");
#ifndef UBUNTU1604
                            givlog->verbose("Fail rename to update.zip.");
#endif
                        }
                    }
                }
                else
                {
                    qDebug("file md5 fail. calc md5 is %s server md5 is %s ",
                           strfilemd5.data(),xFileReply.strmd5().data());
#ifndef UBUNTU1604
                    givlog->warn("file md5 fail. calc md5 is %s server md5 is %s ",
                                 strfilemd5.data(),xFileReply.strmd5().data());
#endif
                }
            }
            else
            {
                xFile.close();
                qDebug("save down file error.");
#ifndef UBUNTU1604
                givlog->warn("save down file error.");
#endif
            }

        }
        else
        {
            qDebug("nFileSize is %ld pos is %ld baFile size is %ld",xFileReply.nfilesize(),nPos,
                   baFile.size());
#ifndef UBUNTU1604
            givlog->verbose("nFileSize is %ld pos is %ld baFile size is %ld",xFileReply.nfilesize(),nPos,
                            baFile.size());
#endif
        }
    }
    else
    {
        qDebug("DownLoad File Error.");
#ifndef UBUNTU1604
        givlog->warn("DownLoad File Error.");
#endif
    }


}