qgsserverapiutils.h

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/***************************************************************************
                          qgsserverapiutils.h

  Class defining utilities for QGIS server APIs.
  -------------------
  begin                : 2019-04-16
  copyright            : (C) 2019 by Alessandro Pasotti
  email                : elpaso at itopen dot it
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/


#ifndef QGSSERVERAPIUTILS_H
#define QGSSERVERAPIUTILS_H

#include "qgis_server.h"
#include <QString>
#include "qgsproject.h"
#include "qgsserverprojectutils.h"
#include "qgsserverapicontext.h"

#ifdef HAVE_SERVER_PYTHON_PLUGINS
#include "qgsaccesscontrol.h"
#include "qgsserverinterface.h"
#endif

class QgsRectangle;
class QgsCoordinateReferenceSystem;
class QgsVectorLayer;

#ifndef SIP_RUN
#include "nlohmann/json_fwd.hpp"
using namespace nlohmann;
#endif

class SERVER_EXPORT QgsServerApiUtils
{

  public:

    static QgsRectangle parseBbox( const QString &bbox );

    static json layerExtent( const QgsVectorLayer *layer ) SIP_SKIP;

    static QgsCoordinateReferenceSystem parseCrs( const QString &bboxCrs );

    static const QVector<QgsMapLayer *> publishedWfsLayers( const QgsProject *project );

#ifndef SIP_RUN

    template <typename T>
    static const QVector<const T *> publishedWfsLayers( const QgsServerApiContext &context )
    {
#ifdef HAVE_SERVER_PYTHON_PLUGINS
      QgsAccessControl *accessControl = context.serverInterface()->accessControls();
#endif
      const QgsProject *project = context.project();
      QVector<const T *> result;
      if ( project )
      {
        const QStringList wfsLayerIds = QgsServerProjectUtils::wfsLayerIds( *project );
        const auto constLayers { project->layers<T *>() };
        for ( const auto &layer : constLayers )
        {
          if ( ! wfsLayerIds.contains( layer->id() ) )
          {
            continue;
          }
#ifdef HAVE_SERVER_PYTHON_PLUGINS
          if ( accessControl && !accessControl->layerReadPermission( layer ) )
          {
            continue;
          }
#endif
          result.push_back( layer );
        }
      }
      return result;
    }

#endif

    static QString sanitizedFieldValue( const QString &value );

    static QStringList publishedCrsList( const QgsProject *project );

    static QString crsToOgcUri( const QgsCoordinateReferenceSystem &crs );

    static QString appendMapParameter( const QString &path, const QUrl &requestUrl );

};
#endif // QGSSERVERAPIUTILS_H