#include "filedownloadertask.h"

FileDownloaderTask::FileDownloaderTask(QNetworkReply *reply, int ID, const QString &fileName, QObject *parent) : QObject(parent)
{
    this->m_Reply = reply;
    this->m_downloadComplete = false;
    this->m_FileName = fileName;
    this->m_taskId = ID;
    this->m_file = new QFile(fileName+".part");
    this->m_file->open(QIODevice::WriteOnly|QIODevice::Truncate);
    this->m_startDateTime = QDateTime::currentDateTime();
    this->m_URL = m_Reply->url().toString();
    connect(this->m_Reply,SIGNAL(downloadProgress(qint64,qint64)),this,SLOT(downloadProgress(qint64,qint64)));
    connect(this->m_Reply,SIGNAL(downloadProgress(qint64,qint64)),this,SIGNAL(updateProgress(qint64,qint64)));
    connect(this->m_Reply,SIGNAL(readyRead()),this,SLOT(readReady()));
    connect(this->m_Reply,SIGNAL(finished()),this,SLOT(downloadFinished()));
}

FileDownloaderTask::~FileDownloaderTask()
{
    delete m_file;
    delete m_Reply;
}

int FileDownloaderTask::ID(){return m_taskId;}

const QString &FileDownloaderTask::fileName(){return m_FileName;}

const QString &FileDownloaderTask::url(){return m_URL;}

const QDateTime &FileDownloaderTask::startDateTime(){return m_startDateTime;}

bool FileDownloaderTask::downloadComplete(){return m_downloadComplete;}

void FileDownloaderTask::downloadProgress(qint64 bytesSent, qint64 bytesTotal)
{
    if(bytesTotal!=0)
        emit updateProgress((100*bytesSent)/bytesTotal);
}

void FileDownloaderTask::readReady()
{
    this->m_file->write(this->m_Reply->readAll());
}

void FileDownloaderTask::downloadFinished()
{
    this->m_downloadComplete = true;
    this->m_file->write(this->m_Reply->readAll());
    this->m_file->close();
    this->m_file->rename(this->m_FileName);
}