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#include "qquickwebenginedownloaditem_p.h"
#include "qquickwebenginedownloaditem_p_p.h"

#include "browser_context_adapter.h"
#include "qquickwebengineprofile_p.h"

using QtWebEngineCore::BrowserContextAdapterClient;

QT_BEGIN_NAMESPACE

ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::NoReason, QQuickWebEngineDownloadItem::NoReason)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileFailed, QQuickWebEngineDownloadItem::FileFailed)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileAccessDenied, QQuickWebEngineDownloadItem::FileAccessDenied)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileNoSpace, QQuickWebEngineDownloadItem::FileNoSpace)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileNameTooLong, QQuickWebEngineDownloadItem::FileNameTooLong)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileTooLarge, QQuickWebEngineDownloadItem::FileTooLarge)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileVirusInfected, QQuickWebEngineDownloadItem::FileVirusInfected)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileTransientError, QQuickWebEngineDownloadItem::FileTransientError)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileBlocked, QQuickWebEngineDownloadItem::FileBlocked)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileSecurityCheckFailed, QQuickWebEngineDownloadItem::FileSecurityCheckFailed)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileTooShort, QQuickWebEngineDownloadItem::FileTooShort)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::FileHashMismatch, QQuickWebEngineDownloadItem::FileHashMismatch)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::NetworkFailed, QQuickWebEngineDownloadItem::NetworkFailed)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::NetworkTimeout, QQuickWebEngineDownloadItem::NetworkTimeout)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::NetworkDisconnected, QQuickWebEngineDownloadItem::NetworkDisconnected)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::NetworkServerDown, QQuickWebEngineDownloadItem::NetworkServerDown)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::NetworkInvalidRequest, QQuickWebEngineDownloadItem::NetworkInvalidRequest)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::ServerFailed, QQuickWebEngineDownloadItem::ServerFailed)
//ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::ServerNoRange, QQuickWebEngineDownloadItem::ServerNoRange)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::ServerBadContent, QQuickWebEngineDownloadItem::ServerBadContent)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::ServerUnauthorized, QQuickWebEngineDownloadItem::ServerUnauthorized)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::ServerCertProblem, QQuickWebEngineDownloadItem::ServerCertProblem)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::ServerForbidden, QQuickWebEngineDownloadItem::ServerForbidden)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::ServerUnreachable, QQuickWebEngineDownloadItem::ServerUnreachable)
ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::UserCanceled, QQuickWebEngineDownloadItem::UserCanceled)
//ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::UserShutdown, QQuickWebEngineDownloadItem::UserShutdown)
//ASSERT_ENUMS_MATCH(BrowserContextAdapterClient::Crash, QQuickWebEngineDownloadItem::Crash)

static inline QQuickWebEngineDownloadItem::DownloadState toDownloadState(int state) {
    switch (state) {
    case BrowserContextAdapterClient::DownloadInProgress:
        return QQuickWebEngineDownloadItem::DownloadInProgress;
    case BrowserContextAdapterClient::DownloadCompleted:
        return QQuickWebEngineDownloadItem::DownloadCompleted;
    case BrowserContextAdapterClient::DownloadCancelled:
        return QQuickWebEngineDownloadItem::DownloadCancelled;
    case BrowserContextAdapterClient::DownloadInterrupted:
        return QQuickWebEngineDownloadItem::DownloadInterrupted;
    default:
        Q_UNREACHABLE();
        return QQuickWebEngineDownloadItem::DownloadCancelled;
    }
}

static inline QQuickWebEngineDownloadItem::DownloadInterruptReason toDownloadInterruptReason(int reason)
{
    return static_cast<QQuickWebEngineDownloadItem::DownloadInterruptReason>(reason);
}

QQuickWebEngineDownloadItemPrivate::QQuickWebEngineDownloadItemPrivate(QQuickWebEngineProfile *p)
    : profile(p)
    , downloadId(-1)
    , downloadState(QQuickWebEngineDownloadItem::DownloadCancelled)
    , savePageFormat(QQuickWebEngineDownloadItem::UnknownSaveFormat)
    , type(QQuickWebEngineDownloadItem::Attachment)
    , interruptReason(QQuickWebEngineDownloadItem::NoReason)
    , totalBytes(-1)
    , receivedBytes(0)
    , downloadFinished(false)
    , downloadPaused(false)
{
}

QQuickWebEngineDownloadItemPrivate::~QQuickWebEngineDownloadItemPrivate()
{
    if (profile)
        profile->d_ptr->downloadDestroyed(downloadId);
}

/*!
    \qmltype WebEngineDownloadItem
    \instantiates QQuickWebEngineDownloadItem
    \inqmlmodule QtWebEngine
    \since QtWebEngine 1.1
    \brief Provides information about a download.

    Stores the state of a download to be used to manage requested downloads.

    By default, the download is rejected unless the user explicitly accepts it with
    accept().
*/

void QQuickWebEngineDownloadItemPrivate::update(const BrowserContextAdapterClient::DownloadItemInfo &info)
{
    Q_Q(QQuickWebEngineDownloadItem);

    updateState(toDownloadState(info.state));

    if (toDownloadInterruptReason(info.downloadInterruptReason) != interruptReason) {
        interruptReason = toDownloadInterruptReason(info.downloadInterruptReason);
        Q_EMIT q->interruptReasonChanged();
    }

    if (info.receivedBytes != receivedBytes) {
        receivedBytes = info.receivedBytes;
        Q_EMIT q->receivedBytesChanged();
    }

    if (info.totalBytes != totalBytes) {
        totalBytes = info.totalBytes;
        Q_EMIT q->totalBytesChanged();
    }

    if (info.done != downloadFinished) {
        downloadFinished = info.done;
        Q_EMIT q->isFinishedChanged();
    }

    if (info.paused != downloadPaused) {
        downloadPaused = info.paused;
        Q_EMIT q->isPausedChanged();
    }
}

void QQuickWebEngineDownloadItemPrivate::updateState(QQuickWebEngineDownloadItem::DownloadState newState)
{
    Q_Q(QQuickWebEngineDownloadItem);

    if (downloadState != newState) {
        downloadState = newState;
        Q_EMIT q->stateChanged();
    }
}

/*!
    \qmlmethod void WebEngineDownloadItem::accept()

    Accepts the download request, which will start the download.
*/

void QQuickWebEngineDownloadItem::accept()
{
    Q_D(QQuickWebEngineDownloadItem);

    if (d->downloadState != QQuickWebEngineDownloadItem::DownloadRequested)
        return;

    d->updateState(QQuickWebEngineDownloadItem::DownloadInProgress);
}

/*!
    \qmlmethod void WebEngineDownloadItem::cancel()

    Cancels the download.
*/

void QQuickWebEngineDownloadItem::cancel()
{
    Q_D(QQuickWebEngineDownloadItem);

    QQuickWebEngineDownloadItem::DownloadState state = d->downloadState;

    if (state == QQuickWebEngineDownloadItem::DownloadCompleted
            || state == QQuickWebEngineDownloadItem::DownloadCancelled)
        return;

    d->updateState(QQuickWebEngineDownloadItem::DownloadCancelled);

    // We directly cancel the download if the user cancels before
    // it even started, so no need to notify the profile here.
    if (state == QQuickWebEngineDownloadItem::DownloadInProgress) {
        if (d->profile)
            d->profile->d_ptr->cancelDownload(d->downloadId);
    }
}


/*!
    \qmlmethod void WebEngineDownloadItem::pause()
    \since QtWebEngine 1.6

    Pauses the download.
*/

void QQuickWebEngineDownloadItem::pause()
{
    Q_D(QQuickWebEngineDownloadItem);

    QQuickWebEngineDownloadItem::DownloadState state = d->downloadState;

    if (state != QQuickWebEngineDownloadItem::DownloadInProgress)
        return;

    if (d->profile)
        d->profile->d_ptr->browserContext()->pauseDownload(d->downloadId);
}

/*!
    \qmlmethod void WebEngineDownloadItem::resume()
    \since QtWebEngine 1.6

    Resumes the download if it was paused or interrupted.
*/
void QQuickWebEngineDownloadItem::resume()
{
    Q_D(QQuickWebEngineDownloadItem);

    QQuickWebEngineDownloadItem::DownloadState state = d->downloadState;

    if (d->downloadFinished || (state != QQuickWebEngineDownloadItem::DownloadInProgress && state != QQuickWebEngineDownloadItem::DownloadInterrupted))
        return;

    if (d->profile)
        d->profile->d_ptr->browserContext()->resumeDownload(d->downloadId);
}

/*!
    \qmlproperty int WebEngineDownloadItem::id

    Holds the download item's ID.
*/

quint32 QQuickWebEngineDownloadItem::id() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->downloadId;
}

/*!
    \qmlproperty enumeration WebEngineDownloadItem::state

    Describes the state of the download:

    \value  WebEngineDownloadItem.DownloadRequested
            Download has been requested, but it has not been accepted yet.
    \value  WebEngineDownloadItem.DownloadInProgress
            Download is in progress.
    \value  WebEngineDownloadItem.DownloadCompleted
            Download completed successfully.
    \value  WebEngineDownloadItem.DownloadCancelled
            Download was cancelled by the user.
    \value  WebEngineDownloadItem.DownloadInterrupted
            Download has been interrupted (by the server or because of lost connectivity).
*/

QQuickWebEngineDownloadItem::DownloadState QQuickWebEngineDownloadItem::state() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->downloadState;
}

/*!
    \qmlproperty int WebEngineDownloadItem::totalBytes

    Holds the total amount of data to download in bytes.

    \c -1 means the total size is unknown.
*/

qint64 QQuickWebEngineDownloadItem::totalBytes() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->totalBytes;
}

/*!
    \qmlproperty int WebEngineDownloadItem::receivedBytes

    Holds the amount of data in bytes that has been downloaded so far.
*/

qint64 QQuickWebEngineDownloadItem::receivedBytes() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->receivedBytes;
}

/*!
    \qmlproperty string WebEngineDownloadItem::mimeType
    \since QtWebEngine 1.2

    Holds the MIME type of the download.
*/

QString QQuickWebEngineDownloadItem::mimeType() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->mimeType;
}

/*!
    \qmlproperty string WebEngineDownloadItem::path

    Holds the full target path where data is being downloaded to.

    The path includes the file name. The default suggested path is the standard
    download location and file name is deduced not to overwrite already existing files.

    The download path can only be set in the \c WebEngineProfile.onDownloadRequested
    handler before the download is accepted.

    \sa WebEngineProfile::downloadRequested(), accept()
*/

QString QQuickWebEngineDownloadItem::path() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->downloadPath;
}

void QQuickWebEngineDownloadItem::setPath(QString path)
{
    Q_D(QQuickWebEngineDownloadItem);
    if (d->downloadState != QQuickWebEngineDownloadItem::DownloadRequested) {
        qWarning("Setting the download path is not allowed after the download has been accepted.");
        return;
    }
    if (d->downloadPath != path) {
        d->downloadPath = path;
        Q_EMIT pathChanged();
    }
}

/*!
    \qmlproperty enumeration WebEngineDownloadItem::savePageFormat
    \since QtWebEngine 1.3

    Describes the format that is used to save a web page.

    \value  WebEngineDownloadItem.UnknownSaveFormat
            This is not a request for downloading a complete web page.
    \value  WebEngineDownloadItem.SingleHtmlSaveFormat
            The page is saved as a single HTML page. Resources such as images
            are not saved.
    \value  WebEngineDownloadItem.CompleteHtmlSaveFormat
            The page is saved as a complete HTML page, for example a directory
            containing the single HTML page and the resources.
    \value  WebEngineDownloadItem.MimeHtmlSaveFormat
            The page is saved as a complete web page in the MIME HTML format.
*/

QQuickWebEngineDownloadItem::SavePageFormat QQuickWebEngineDownloadItem::savePageFormat() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->savePageFormat;
}

void QQuickWebEngineDownloadItem::setSavePageFormat(QQuickWebEngineDownloadItem::SavePageFormat format)
{
    Q_D(QQuickWebEngineDownloadItem);
    if (d->savePageFormat != format) {
        d->savePageFormat = format;
        Q_EMIT savePageFormatChanged();
    }
}

/*!
    \qmlproperty enumeration WebEngineDownloadItem::type
    \readonly
    \since QtWebEngine 1.4
    \obsolete

    Describes the requested download's type.

    \note This property works unreliably, except for \c SavePage
    downloads. Use \l isSavePageDownload instead.

    \value WebEngineDownloadItem.Attachment The web server's response includes a
           \c Content-Disposition header with the \c attachment directive. If \c Content-Disposition
           is present in the reply, the web server is indicating that the client should prompt the
           user to save the content regardless of the content type.
           See \l {RFC 2616 section 19.5.1} for details.
    \value WebEngineDownloadItem.DownloadAttribute The user clicked a link with the \c download
           attribute. See \l {HTML download attribute} for details.
    \value WebEngineDownloadItem.UserRequested The user initiated the download, for example by
           selecting a web action.
    \value WebEngineDownloadItem.SavePage Saving of the current page was requested (for example by
           the \l{WebEngineView::WebAction}{WebEngineView.SavePage} web action).

*/

QQuickWebEngineDownloadItem::DownloadType QQuickWebEngineDownloadItem::type() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->type;
}

/*!
    \qmlproperty bool WebEngineDownloadItem::isSavePageDownload
    \readonly
    \since QtWebEngine 1.7

    Whether this is a download request for saving a web page or a file.

    \sa savePageFormat
*/
bool QQuickWebEngineDownloadItem::isSavePageDownload() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->type == QQuickWebEngineDownloadItem::SavePage;
}

/*!
    \qmlproperty enumeration WebEngineDownloadItem::interruptReason
    \readonly
    \since QtWebEngine 1.5

    Returns the reason why the download was interrupted:

    \value WebEngineDownloadItem.NoReason Unknown reason or not interrupted.
    \value WebEngineDownloadItem.FileFailed General file operation failure.
    \value WebEngineDownloadItem.FileAccessDenied The file cannot be written locally, due to access restrictions.
    \value WebEngineDownloadItem.FileNoSpace Insufficient space on the target drive.
    \value WebEngineDownloadItem.FileNameTooLong The directory or file name is too long.
    \value WebEngineDownloadItem.FileTooLarge The file size exceeds the file system limitation.
    \value WebEngineDownloadItem.FileVirusInfected The file is infected with a virus.
    \value WebEngineDownloadItem.FileTransientError Temporary problem (for example the file is in use,
           out of memory, or too many files are opened at once).
    \value WebEngineDownloadItem.FileBlocked The file was blocked due to local policy.
    \value WebEngineDownloadItem.FileSecurityCheckFailed An attempt to check the safety of the download
           failed due to unexpected reasons.
    \value WebEngineDownloadItem.FileTooShort An attempt was made to seek past the end of a file when
           opening a file (as part of resuming a previously interrupted download).
    \value WebEngineDownloadItem.FileHashMismatch The partial file did not match the expected hash.

    \value WebEngineDownloadItem.NetworkFailed General network failure.
    \value WebEngineDownloadItem.NetworkTimeout The network operation has timed out.
    \value WebEngineDownloadItem.NetworkDisconnected The network connection has been terminated.
    \value WebEngineDownloadItem.NetworkServerDown The server has gone down.
    \value WebEngineDownloadItem.NetworkInvalidRequest The network request was invalid (for example, the
           original or redirected URL is invalid, has an unsupported scheme, or is disallowed by policy).

    \value WebEngineDownloadItem.ServerFailed General server failure.
    \value WebEngineDownloadItem.ServerBadContent The server does not have the requested data.
    \value WebEngineDownloadItem.ServerUnauthorized The server did not authorize access to the resource.
    \value WebEngineDownloadItem.ServerCertProblem A problem with the server certificate occurred.
    \value WebEngineDownloadItem.ServerForbidden Access forbidden by the server.
    \value WebEngineDownloadItem.ServerUnreachable Unexpected server response (might indicate that
           the responding server may not be the intended server).
    \value WebEngineDownloadItem.UserCanceled The user canceled the download.

    \sa interruptReasonString
*/

QQuickWebEngineDownloadItem::DownloadInterruptReason QQuickWebEngineDownloadItem::interruptReason() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->interruptReason;
}

/*!
    \qmlproperty string WebEngineDownloadItem::interruptReasonString
    Returns a human-readable description of the reason for interrupting the download.
    \since QtWebEngine 1.5

    \sa interruptReason
*/
QString QQuickWebEngineDownloadItem::interruptReasonString() const
{
    return BrowserContextAdapterClient::downloadInterruptReasonToString(
              static_cast<BrowserContextAdapterClient::DownloadInterruptReason>(interruptReason()));
}

/*!
    \qmlproperty bool WebEngineDownloadItem::isFinished
    \readonly
    \since QtWebEngine 1.6

    Whether this download is finished (completed, cancelled, or non-resumable interrupted state).
 */

bool QQuickWebEngineDownloadItem::isFinished() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->downloadFinished;
}

/*!
    \qmlproperty bool WebEngineDownloadItem::isPaused
    \readonly
    \since QtWebEngine 1.6

    Whether this download is paused.
 */

bool QQuickWebEngineDownloadItem::isPaused() const
{
    Q_D(const QQuickWebEngineDownloadItem);
    return d->downloadPaused;
}

QQuickWebEngineDownloadItem::QQuickWebEngineDownloadItem(QQuickWebEngineDownloadItemPrivate *p, QObject *parent)
    : QObject(parent)
    , d_ptr(p)
{
    p->q_ptr = this;
}

QQuickWebEngineDownloadItem::~QQuickWebEngineDownloadItem()
{
}

QT_END_NAMESPACE