#include "downloadfile.h"
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "tools.h"
#include <pstreams/pstream.h>
#include <sstream>
#include <string>
#include <cstring>
#include <iostream>
#include <stdio.h>
#include <QMessageBox>
#include <vector>
#include <boost/algorithm/string/replace.hpp>
#include <memory>
#include <stdexcept>
#include <array>

using namespace std;

downloadFile::downloadFile()
{
}

void downloadFile::cancelled()
{
    this->canceled = true;
}

void downloadFile::download(QString savePath, MainWindow *mw)
{
    string server;
    string service;
    string path;
    string line;
    string errorRsync;
    char cmd[4096];
    int portN;
    int pos;
    int pid;
    QTreeWidgetItem * item;
    stringstream output;
   // QString savePath = ".";
    vector<string> v;
    int value;
    //char command_out[1024] = {0};
    array<char, 2048> buffer;

    server.assign(mw->ui->khistorycombobox->currentText().toStdString());
    portN = mw->ui->portEdit->text().toInt();
    service = mw->ui->listWidget->currentItem()->text().toStdString();
    pos = service.find_first_of('\n');
    service.resize(pos);

    item = mw->ui->treeWidget->currentItem();
    path = item->text(0).toStdString();
    while(item->parent() != NULL)
    {
        item = item->parent();
        path = item->text(0).toStdString() + "/" + path;

    };


    sprintf(cmd, "rsync --bwlimit=100K --port %i -P %s::\"%s/%s\" \"%s/\" 2>&1", portN, server.c_str(), service.c_str(), path.c_str(), savePath.toStdString().c_str());



    //unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd, "r"), pclose);
    FILE * fp = popen2(cmd, "r", pid);

    if (!fp)
    {
        throw runtime_error("popen2() failed!");
    }

    while (fgets(buffer.data(), buffer.size(), fp) != nullptr)
    {
        buffer.data();
        if (this->canceled == true)
        {
            return;
        }
        line = buffer.data();
        //cout << line << endl;
        pos = line.find('%');
        if (pos != -1)
        {
            line.erase(pos);
            pos = line.find_last_of(' ');
            if (pos != -1)
            {
                line.erase(0, pos);
                value = stoi(line);
                cout << value << endl;
                emit progressSignal(value);
            }
        }
        buffer.empty();
    }

    //cout << path << endl;
}