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** Copyright (C) 2020 The Qt Company Ltd.
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** This file is part of the QtPDF module of the Qt Toolkit.
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** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later as published by the Free
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****************************************************************************/

#ifndef QQUICKPDFDOCUMENT_P_H
#define QQUICKPDFDOCUMENT_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtPdfQuick/private/qtpdfquickglobal_p.h>
#include <QtPdf/QPdfDocument>
#include <QDateTime>
#include <QJSValue>
#include <QQmlParserStatus>
#include <QUrl>
#include <QVariant>

QT_BEGIN_NAMESPACE

class Q_PDFQUICK_EXPORT QQuickPdfDocument : public QObject, public QQmlParserStatus
{
    Q_OBJECT
    Q_PROPERTY(QUrl source READ source WRITE setSource NOTIFY sourceChanged)
    Q_PROPERTY(int pageCount READ pageCount NOTIFY pageCountChanged FINAL)
    Q_PROPERTY(qreal maxPageWidth READ maxPageWidth NOTIFY metaDataChanged)
    Q_PROPERTY(qreal maxPageHeight READ maxPageHeight NOTIFY metaDataChanged)
    Q_PROPERTY(QString password READ password WRITE setPassword NOTIFY passwordChanged FINAL)
    Q_PROPERTY(QPdfDocument::Status status READ status NOTIFY statusChanged FINAL)
    Q_PROPERTY(QString error READ error NOTIFY statusChanged FINAL)

    Q_PROPERTY(QString title READ title NOTIFY metaDataChanged)
    Q_PROPERTY(QString subject READ subject NOTIFY metaDataChanged)
    Q_PROPERTY(QString author READ author NOTIFY metaDataChanged)
    Q_PROPERTY(QString keywords READ keywords NOTIFY metaDataChanged)
    Q_PROPERTY(QString producer READ producer NOTIFY metaDataChanged)
    Q_PROPERTY(QString creator READ creator NOTIFY metaDataChanged)
    Q_PROPERTY(QDateTime creationDate READ creationDate NOTIFY metaDataChanged)
    Q_PROPERTY(QDateTime modificationDate READ modificationDate NOTIFY metaDataChanged)

public:
    explicit QQuickPdfDocument(QObject *parent = nullptr);

    void classBegin() override {}
    void componentComplete() override;

    QUrl source() const { return m_source; }
    void setSource(QUrl source);

    int pageCount() const { return m_doc.pageCount(); }
    QPdfDocument::Status status() const { return m_doc.status(); }

    QString error() const;

    QString password() const { return m_doc.password(); }
    void setPassword(const QString &password);

    QString title() { return m_doc.metaData(QPdfDocument::Title).toString(); }
    QString author() { return m_doc.metaData(QPdfDocument::Author).toString(); }
    QString subject() { return m_doc.metaData(QPdfDocument::Subject).toString(); }
    QString keywords() { return m_doc.metaData(QPdfDocument::Keywords).toString(); }
    QString producer() { return m_doc.metaData(QPdfDocument::Producer).toString(); }
    QString creator() { return m_doc.metaData(QPdfDocument::Creator).toString(); }
    QDateTime creationDate() { return m_doc.metaData(QPdfDocument::CreationDate).toDateTime(); }
    QDateTime modificationDate() { return m_doc.metaData(QPdfDocument::ModificationDate).toDateTime(); }

    Q_INVOKABLE QSizeF pagePointSize(int page) const;
    qreal maxPageWidth() const;
    qreal maxPageHeight() const;
    Q_INVOKABLE qreal heightSumBeforePage(int page, qreal spacing = 0, int facingPages = 1) const;

Q_SIGNALS:
    void sourceChanged();
    void passwordChanged();
    void passwordRequired();
    void statusChanged();
    void pageCountChanged();
    void metaDataChanged();

private:
    QPdfDocument &document() { return m_doc; }
    void updateMaxPageSize();

private:
    QUrl m_source;
    QPdfDocument m_doc;
    QSizeF m_maxPageWidthHeight;

    friend class QQuickPdfLinkModel;
    friend class QQuickPdfSearchModel;
    friend class QQuickPdfSelection;

    Q_DISABLE_COPY(QQuickPdfDocument)
};

QT_END_NAMESPACE

#endif // QQUICKPDFDOCUMENT_P_H