qgsserverogcapi.h

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/***************************************************************************
  qgsserverogcapi.h - QgsServerOgcApi
 
 ---------------------
 begin                : 10.7.2019
 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 QGSSERVEROGCAPI_H
#define QGSSERVEROGCAPI_H
 
#include "qgis_server.h"
#include "qgsserverapi.h"
 
class QgsServerOgcApiHandler;

class SERVER_EXPORT QgsServerOgcApi : public QgsServerApi
{
    Q_GADGET
 
  public:
    // Note: non a scoped enum or qHash fails
    enum Rel
    {
      // The following registered link relation types are used
      alternate,    
      describedBy,  
      collection,   
      item,         
      self,         
      service_desc, 
      service_doc,  
      prev,         
      next,         
      license,      
      // In addition the following link relation types are used for which no applicable registered link relation type could be identified:
      items,       
      conformance, 
      data         
    };
    Q_ENUM( Rel )
 
    // Note: cannot be a scoped enum because qHash does not support them
    enum ContentType
    {
      GEOJSON,
      OPENAPI3, 
      JSON,
      HTML,
      XML,
      FLATGEOBUF 
    };
    Q_ENUM( ContentType )
 
    
    enum class Profile
    {
      NONE,    
      RFC7946, 
      // This not supported yet but I am leaving it here because
      // I am very optimistic that it will be supported soon!
      //  JSONFG,     //!< JSON Feature Geometry profile according to OGC API - Features 1.0
      //  JSONFG_PLUS //!< JSON Feature Geometry profile with GeoJSON compatibility extensions
    };
    Q_ENUM( Profile )
 
    
    QgsServerOgcApi( QgsServerInterface *serverIface, const QString &rootPath, const QString &name, const QString &description = QString(), const QString &version = QString() );
 
    // QgsServerApi interface
    const QString name() const override { return mName; }
    const QString description() const override { return mDescription; }
    const QString version() const override { return mVersion; }
    const QString rootPath() const override { return mRootPath; }
 
    ~QgsServerOgcApi() override;

    void executeRequest( const QgsServerApiContext &context ) const override SIP_THROW( QgsServerApiBadRequestException ) SIP_VIRTUALERRORHANDLER( serverapi_badrequest_exception_handler );

    static const QMap<QgsServerOgcApi::ContentType, QStringList> contentTypeMimes() SIP_SKIP;

    static const QHash<QgsServerOgcApi::ContentType, QList<QgsServerOgcApi::ContentType>> contentTypeAliases() SIP_SKIP;

    static QString profileToString( const QgsServerOgcApi::Profile &profile ) SIP_SKIP;

    static QString profileToUri( const QgsServerOgcApi::Profile &profile ) SIP_SKIP;
 
    // Utilities
#ifndef SIP_RUN

    template<class T, typename... Args> void registerHandler( Args... args ) { mHandlers.emplace_back( std::make_shared<T>( args... ) ); }
#endif

    void registerHandler( QgsServerOgcApiHandler *handler SIP_TRANSFER );

    static QUrl sanitizeUrl( const QUrl &url );

    static std::string relToString( const QgsServerOgcApi::Rel &rel );

    static QString contentTypeToString( const QgsServerOgcApi::ContentType &ct );

    static std::string contentTypeToStdString( const QgsServerOgcApi::ContentType &ct );

    static QString contentTypeToExtension( const QgsServerOgcApi::ContentType &ct );

    Q_DECL_DEPRECATED static QgsServerOgcApi::ContentType contenTypeFromExtension( const std::string &extension ) SIP_DEPRECATED { return contentTypeFromExtension( extension ); } // spellok

    static QgsServerOgcApi::ContentType contentTypeFromExtension( const std::string &extension );

    static std::string mimeType( const QgsServerOgcApi::ContentType &contentType );

    const std::vector<std::shared_ptr<QgsServerOgcApiHandler>> handlers() const SIP_SKIP;
 
  private:
    QString mRootPath;
    QString mName;
    QString mDescription;
    QString mVersion;
 
    //Note: this cannot be unique because of SIP bindings
    std::vector<std::shared_ptr<QgsServerOgcApiHandler>> mHandlers;

    static QMap<QgsServerOgcApi::ContentType, QStringList> sContentTypeMime;

    static QHash<QgsServerOgcApi::ContentType, QList<QgsServerOgcApi::ContentType>> sContentTypeAliases;
};
 
#endif // QGSSERVEROGCAPI_H