/***************************************************************************
 *   This file is part of the Lime Report project                          *
 *   Copyright (C) 2021 by Alexander Arin                                  *
 *   arin_a@bk.ru                                                          *
 *                                                                         *
 **                   GNU General Public License Usage                    **
 *                                                                         *
 *   This library is free software: you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation, either version 3 of the License, or     *
 *   (at your option) any later version.                                   *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
 *                                                                         *
 **                  GNU Lesser General Public License                    **
 *                                                                         *
 *   This library is free software: you can redistribute it and/or modify  *
 *   it under the terms of the GNU Lesser General Public License as        *
 *   published by the Free Software Foundation, either version 3 of the    *
 *   License, or (at your option) any later version.                       *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library.                                      *
 *   If not, see <http://www.gnu.org/licenses/>.                           *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 ****************************************************************************/
#ifndef LRREPORTDESIGNINTF_P_H
#define LRREPORTDESIGNINTF_P_H

#include "lrbanddesignintf.h"
#include "lrcollection.h"
#include "lrdatasourcemanager.h"
#include "lrdesignerplugininterface.h"
#include "lrglobal.h"
#include "lrreportdesignwindowintrerface.h"
#include "lrreportengine.h"
#include "lrreportrender.h"
#include "lrreporttranslation.h"
#include "lrscriptenginemanager.h"
#include "serializators/lrstorageintf.h"

#include <QLocale>
#include <QMainWindow>
#include <QObject>
#include <QSharedPointer>

class QFileSystemWatcher;

namespace LimeReport {

class PageDesignIntf;
class PrintRange;
class ReportDesignWindow;
class ReportExporterInterface;

class WatermarkHelper {
public:
    WatermarkHelper(const WatermarkSetting& watermark): m_watermark(watermark) { }
    qreal sceneX();
    qreal sceneY();
    qreal sceneWidth();
    qreal sceneHeight();
    QPointF scenePos();
    QSizeF sceneSize();
    QPointF mapToPage(const PageItemDesignIntf& page);

private:
    qreal valueToPixels(qreal value);

private:
    const WatermarkSetting& m_watermark;
};

class ReportEnginePrivateInterface {
public:
    virtual PageDesignIntf* appendPage(const QString& pageName = "") = 0;
    virtual bool deletePage(PageDesignIntf* page) = 0;
    virtual void reorderPages(const QList<PageDesignIntf*>& reorderedPages) = 0;
    virtual int pageCount() = 0;
    virtual PageDesignIntf* pageAt(int index) = 0;
    virtual void clearReport() = 0;
    virtual ScriptEngineContext* scriptContext() = 0;
    virtual ScriptEngineManager* scriptManager() = 0;
    virtual DataSourceManager* dataManager() = 0;
    virtual QString reportFileName() = 0;
    virtual void setReportFileName(const QString& reportFileName) = 0;
    virtual bool isNeedToSave() = 0;
    virtual bool emitSaveReport() = 0;
    virtual bool emitSaveReportAs() = 0;
    virtual void emitSaveFinished() = 0;
    virtual bool saveToFile(const QString& fileName = "") = 0;
    virtual bool isSaved() = 0;
    virtual QString reportName() = 0;
    virtual bool loadFromFile(const QString& fileName, bool autoLoadPreviewOnChange) = 0;
    virtual bool emitLoadReport() = 0;
    virtual void emitLoadFinished() = 0;
    virtual void clearSelection() = 0;
    virtual bool printReport(QPrinter* printer = 0) = 0;
    virtual void previewReport(PreviewHints hints = PreviewBarsUserSetting) = 0;
    virtual void setCurrentReportsDir(const QString& dirName) = 0;
    virtual QString currentReportsDir() = 0;
    virtual bool setDefaultExportDir(const QString& dirName) = 0;
    virtual QString defaultExportDir() = 0;
    virtual bool suppressFieldAndVarError() const = 0;
    virtual void setSuppressFieldAndVarError(bool suppressFieldAndVarError) = 0;
    virtual void setStyleSheet(const QString& styleSheet) = 0;
    virtual QString styleSheet() const = 0;
    virtual QList<QLocale::Language> designerLanguages() = 0;
    virtual QLocale::Language currentDesignerLanguage() = 0;
    virtual void setCurrentDesignerLanguage(QLocale::Language language) = 0;
    virtual void cancelRender() = 0;
    virtual void setShowProgressDialog(bool value) = 0;
    virtual bool isShowProgressDialog() const = 0;
    virtual bool isBusy() = 0;
    virtual int baseItemPadding() const = 0;
    virtual void setBaseItemPadding(int baseTextItemPadding) = 0;
};

class PrintProcessor {
public:
    explicit PrintProcessor(QPrinter* printer);
    ~PrintProcessor()
    {
        if (m_painter)
            delete m_painter;
    }
    bool printPage(LimeReport::PageItemDesignIntf::Ptr page);

private:
    void initPrinter(PageItemDesignIntf* page);

private:
    QPrinter* m_printer;
    QPainter* m_painter;
    LimeReport::PageDesignIntf m_renderPage;
    bool m_firstPage;
};

class ReportEnginePrivate:
    public QObject,
    public ICollectionContainer,
    public ITranslationContainer,
    public IExternalPainter,
    public ReportEnginePrivateInterface {
    Q_OBJECT
    Q_DECLARE_PUBLIC(ReportEngine)
    Q_PROPERTY(ACollectionProperty pages READ fakeCollectionReader)
    Q_PROPERTY(QObject* datasourcesManager READ dataManager)
    Q_PROPERTY(QObject* scriptContext READ scriptContext)
    Q_PROPERTY(bool suppressFieldAndVarError READ suppressFieldAndVarError WRITE
                   setSuppressFieldAndVarError)
    Q_PROPERTY(int baseItemPadding READ baseItemPadding WRITE setBaseItemPadding)
    Q_PROPERTY(ATranslationProperty translation READ fakeTranslationReader)

    enum AppendType {
        MixPages,
        AppendPages
    };

    friend class PreviewReportWidget;

public:
    bool printPages(ReportPages pages, QPrinter* printer);
    void printPages(ReportPages pages, QMap<QString, QPrinter*> printers,
                    bool printToAllPrinters = false);
    Q_INVOKABLE QStringList aviableReportTranslations();
    Q_INVOKABLE void setReportTranslation(const QString& languageName);

public:
    explicit ReportEnginePrivate(QObject* parent = 0);
    virtual ~ReportEnginePrivate();

    PageDesignIntf* appendPage(const QString& pageName = "");
    bool deletePage(PageDesignIntf* page);
    PageDesignIntf* createPreviewPage();
    PageDesignIntf* pageAt(int index)
    {
        return (index <= (m_pages.count() - 1)) ? m_pages.at(index) : 0;
    }
    int pageCount() { return m_pages.count(); }
    DataSourceManager* dataManager() { return m_datasources; }
    ScriptEngineContext* scriptContext() { return m_scriptEngineContext; }
    ScriptEngineManager* scriptManager();
    IDataSourceManager* dataManagerIntf() { return m_datasources; }

    IScriptEngineManager* scriptManagerIntf()
    {
        ScriptEngineManager::instance().setDataManager(dataManager());
        return &ScriptEngineManager::instance();
    }

    void clearReport();
    bool printReport(QPrinter* printer = 0);
    bool printReport(QMap<QString, QPrinter*> printers, bool printToAllPrinters);

    void printToFile(const QString& fileName);
    bool printToPDF(const QString& fileName);
    bool exportReport(QString exporterName, const QString& fileName = "",
                      const QMap<QString, QVariant>& params = QMap<QString, QVariant>());
    void previewReport(PreviewHints hints = PreviewBarsUserSetting);
    void previewReport(QPrinter* printer, PreviewHints hints = PreviewBarsUserSetting);

    ReportDesignWindowInterface* getDesignerWindow();
    void designReport(bool showModal);
    void setSettings(QSettings* value);
    void setShowProgressDialog(bool value) { m_showProgressDialog = value; }
    bool isShowProgressDialog() const { return m_showProgressDialog; }
    QSettings* settings();
    bool loadFromFile(const QString& fileName, bool autoLoadPreviewOnChange);
    bool loadFromByteArray(QByteArray* data, const QString& name = "");
    bool loadFromString(const QString& report, const QString& name = "");
    QString reportFileName() { return m_fileName; }
    void setReportFileName(const QString& reportFileName) { m_fileName = reportFileName; }
    bool saveToFile(const QString& fileName = "");
    QByteArray saveToByteArray();
    QString saveToString();
    bool isNeedToSave();
    QString lastError();
    ReportEngine* q_ptr;
    bool emitSaveReport();
    bool emitSaveReportAs();
    bool emitLoadReport();
    void emitSaveFinished();
    void emitLoadFinished();
    void emitPrintedToPDF(QString fileName);
    bool isSaved();
    void setCurrentReportsDir(const QString& dirName);
    QString currentReportsDir() { return m_reportsDir; }
    bool setDefaultExportDir(const QString& dirname);
    QString defaultExportDir() { return m_exportDir; }
    void setReportName(const QString& reportName) { m_reportName = reportName; }
    QString reportName() { return m_reportName; }
    bool hasActivePreview() { return m_activePreview; }
    PageDesignIntf* createPreviewScene(QObject* parent);
    PreviewReportWidget* createPreviewWidget(QWidget* parent);
    QIcon previewWindowIcon() const;
    void setPreviewWindowIcon(const QIcon& previewWindowIcon);
    QString previewWindowTitle() const;
    void setPreviewWindowTitle(const QString& previewWindowTitle);
    QColor previewWindowPageBackground();
    void setPreviewWindowPageBackground(QColor color);

    bool suppressFieldAndVarError() const;
    void setSuppressFieldAndVarError(bool suppressFieldAndVarError);
    int baseItemPadding() const;
    void setBaseItemPadding(int baseTextItemPadding);
    bool isBusy();
    bool resultIsEditable() const;
    void setResultEditable(bool value);
    bool saveToFileIsVisible() const;
    void setSaveToFileVisible(bool value);
    bool printToPdfIsVisible() const;
    void setPrintToPdfVisible(bool value);
    bool printIsVisible() const;
    void setPrintVisible(bool value);

    void setPassPhrase(const QString& passPhrase);
    bool addTranslationLanguage(QLocale::Language language);
    bool removeTranslationLanguage(QLocale::Language language);
    bool setReportLanguage(QLocale::Language language);
    QList<QLocale::Language> aviableLanguages();
    ReportTranslation* reportTranslation(QLocale::Language language);
    void reorderPages(const QList<PageDesignIntf*>& reorderedPages);
    void clearSelection();
    Qt::LayoutDirection previewLayoutDirection();
    void setPreviewLayoutDirection(const Qt::LayoutDirection& previewLayoutDirection);
    QString styleSheet() const;
    void setStyleSheet(const QString& styleSheet);
    QList<QLocale::Language> designerLanguages();
    QLocale::Language currentDesignerLanguage();
    void setCurrentDesignerLanguage(QLocale::Language language);
    ScaleType previewScaleType();
    int previewScalePercent();
    void setPreviewScaleType(const ScaleType& previewScaleType, int percent = 0);
    void addWatermark(const WatermarkSetting& watermarkSetting);
    void clearWatermarks();
    IPreparedPages* preparedPages();
    bool showPreparedPages(PreviewHints hints);
    bool showPreparedPages(QPrinter* defaultPrinter, PreviewHints hints);
    bool prepareReportPages();
    bool printPreparedPages();
signals:
    void pagesLoadFinished();
    void datasourceCollectionLoadFinished(const QString& collectionName);
    void cleared();
    void renderStarted();
    void renderFinished();
    void renderPageFinished(int renderedPageCount);
    void onSave(bool& saved);
    void onSaveAs(bool& saved);
    void onSavePreview(bool& saved, LimeReport::IPreparedPages* pages);
    void onLoad(bool& loaded);
    void saveFinished();
    void loadFinished();
    void printedToPDF(QString fileName);

    void getAvailableDesignerLanguages(QList<QLocale::Language>* languages);
    void currentDefaultDesignerLanguageChanged(QLocale::Language);
    QLocale::Language getCurrentDefaultDesignerLanguage();
    void externalPaint(const QString& objectName, QPainter* painter,
                       const QStyleOptionGraphicsItem*);
    void printingStarted(int pageCount);
    void printingFinished();
    void pagePrintingFinished(int index);

public slots:
    bool slotLoadFromFile(const QString& fileName);
    void cancelRender();
    void cancelPrinting();

protected:
    PageDesignIntf* createPage(const QString& pageName = "", bool preview = false);
    bool showPreviewWindow(ReportPages pages, PreviewHints hints, QPrinter* printer);
    void internalPrintPages(ReportPages pages, QPrinter& printer);
protected slots:
    void slotDataSourceCollectionLoaded(const QString& collectionName);
private slots:
    void slotPreviewWindowDestroyed(QObject* window);
    void slotDesignerWindowDestroyed(QObject* window);

private:
    // ICollectionContainer
    virtual QObject* createElement(const QString&, const QString&);
    virtual int elementsCount(const QString&);
    virtual QObject* elementAt(const QString&, int index);
    virtual void collectionLoadFinished(const QString&);
    void saveError(QString message);
    void showError(QString message);
    // ICollectionContainer
    // ITranslationContainer
    Translations* translations() { return &m_translations; }
    void updateTranslations();
    // ITranslationContainer
    ReportPages renderToPages();
    ReportPages appendPages(ReportPages s1, ReportPages s2, AppendType appendType);
    QString renderToString();
    PageItemDesignIntf* getPageByName(const QString& pageName);
    ATranslationProperty fakeTranslationReader() { return ATranslationProperty(); }
    PageItemDesignIntf* createRenderingPage(PageItemDesignIntf* page);
    void initReport();
    void paintByExternalPainter(const QString& objectName, QPainter* painter,
                                const QStyleOptionGraphicsItem* options);
    void dropChanges()
    {
        m_datasources->dropChanges();
        m_scriptEngineContext->dropChanges();
    }
    void clearRenderingPages();

private:
    QList<PageDesignIntf*> m_pages;
    QList<PageItemDesignIntf*> m_renderingPages;
    ReportPages m_preparedPages;
    PreparedPages* m_preparedPagesManager;
    DataSourceManager* m_datasources;
    ScriptEngineContext* m_scriptEngineContext;
    ReportRender::Ptr m_reportRender;
    QString m_fileName;
    QString m_lastError;
    QSettings* m_settings;
    bool m_ownedSettings;
    QScopedPointer<QPrinter> m_printer;
    bool m_printerSelected;
    bool m_showProgressDialog;
    QString m_reportsDir;
    QString m_exportDir;
    QString m_reportName;
    QMainWindow* m_activePreview;
    QIcon m_previewWindowIcon;
    QString m_previewWindowTitle;
    QPointer<ReportDesignWindowInterface> m_designerWindow;
    ReportSettings m_reportSettings;
    bool m_reportRendering;
    bool m_resultIsEditable;
    QString m_passPhrase;
    QFileSystemWatcher* m_fileWatcher;
    Translations m_translations;
    QLocale::Language m_reportLanguage;
    void activateLanguage(QLocale::Language language);
    Qt::LayoutDirection m_previewLayoutDirection;
    LimeReportDesignerPluginInterface* m_designerFactory;
    QString m_styleSheet;
    QLocale::Language m_currentDesignerLanguage;
    QMap<QString, ReportExporterInterface*> exporters;
    ScaleType m_previewScaleType;
    int m_previewScalePercent;
    int m_startTOCPage;
    QColor m_previewPageBackgroundColor;
    QVector<WatermarkSetting> m_watermarks;
    BaseDesignIntf* createWatermark(PageDesignIntf* page, WatermarkSetting watermarkSetting);
    bool m_saveToFileVisible;
    bool m_printToPdfVisible;
    bool m_printVisible;
    bool m_cancelPrinting;
};

} // namespace LimeReport
#endif // LRREPORTDESIGNINTF_P_H