#include "DownloadManager.hpp"

#include <QDesktopServices>

namespace chatterino {

DownloadManager::DownloadManager(QObject *parent)
    : QObject(parent)
{
    manager = new QNetworkAccessManager;
}

DownloadManager::~DownloadManager()
{
    manager->deleteLater();
}

void DownloadManager::setFile(QString fileURL, const QString &channelName)
{
    QString filePath = fileURL;
    QString saveFilePath;
    QStringList filePathList = filePath.split('/');
    saveFilePath = QString(
        QStandardPaths::writableLocation(QStandardPaths::AppDataLocation) +
        "2/cache/profileAvatars/twitch/" + channelName + ".png");

    QNetworkRequest request;
    request.setUrl(QUrl(fileURL));
    reply = manager->get(request);

    file = new QFile;
    file->setFileName(saveFilePath);
    file->open(QIODevice::WriteOnly);

    connect(reply, SIGNAL(downloadProgress(qint64, qint64)), this,
            SLOT(onDownloadProgress(qint64, qint64)));
    connect(manager, SIGNAL(finished(QNetworkReply *)), this,
            SLOT(onFinished(QNetworkReply *)));
    connect(reply, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
    connect(reply, SIGNAL(finished()), this, SLOT(onReplyFinished()));
}

void DownloadManager::onDownloadProgress(qint64 bytesRead, qint64 bytesTotal)
{
    qDebug(QString::number(bytesRead).toLatin1() + " - " +
           QString::number(bytesTotal).toLatin1());
}

void DownloadManager::onFinished(QNetworkReply *reply)
{
    switch (reply->error()) {
        case QNetworkReply::NoError: {
            qDebug("file is downloaded successfully.");
        } break;
        default: {
            qDebug(reply->errorString().toLatin1());
        };
    }

    if (file->isOpen()) {
        file->close();
        file->deleteLater();
    }
    emit downloadComplete();
}

void DownloadManager::onReadyRead()
{
    file->write(reply->readAll());
}

void DownloadManager::onReplyFinished()
{
    if (file->isOpen()) {
        file->close();
        file->deleteLater();
    }
}
}  // namespace chatterino