qgsarcgisrestquery.h

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/***************************************************************************
    qgsarcgisrestquery.h
    --------------------
    begin                : December 2020
    copyright            : (C) 2020 by Nyall Dawson
    email                : nyall dot dawson at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   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 QGSARCGISRESTQUERY_H
#define QGSARCGISRESTQUERY_H
 
#define SIP_NO_FILE
 
#include "qgis_core.h"
#include "qgsrectangle.h"
#include "qgswkbtypes.h"
#include "qgshttpheaders.h"
 
#include <QString>
#include <QVariantMap>
 
class QgsFeedback;
class QNetworkReply;
 
class CORE_EXPORT QgsArcGisRestQueryUtils
{
  public:
 
    enum ServiceTypeFilter
    {
      AllTypes, 
      Vector,   
      Raster   
    };
 
    static QVariantMap getServiceInfo( const QString &baseurl, const QString &authcfg, QString &errorTitle, QString &errorText, const QgsHttpHeaders &requestHeaders = QgsHttpHeaders() );
 
    static QVariantMap getLayerInfo( const QString &layerurl, const QString &authcfg, QString &errorTitle, QString &errorText, const QgsHttpHeaders &requestHeaders = QgsHttpHeaders() );
 
    static QVariantMap getObjectIds( const QString &layerurl, const QString &authcfg, QString &errorTitle, QString &errorText, const QgsHttpHeaders &requestHeaders = QgsHttpHeaders(),
                                     const QgsRectangle &bbox = QgsRectangle() );
 
    static QVariantMap getObjects( const QString &layerurl, const QString &authcfg, const QList<quint32> &objectIds, const QString &crs,
                                   bool fetchGeometry, const QStringList &fetchAttributes, bool fetchM, bool fetchZ,
                                   const QgsRectangle &filterRect, QString &errorTitle, QString &errorText, const QgsHttpHeaders &requestHeaders = QgsHttpHeaders(), QgsFeedback *feedback = nullptr );
 
    static QList<quint32> getObjectIdsByExtent( const QString &layerurl, const QgsRectangle &filterRect, QString &errorTitle, QString &errorText, const QString &authcfg, const QgsHttpHeaders &requestHeaders = QgsHttpHeaders(), QgsFeedback *feedback = nullptr );
 
    static QByteArray queryService( const QUrl &url, const QString &authcfg, QString &errorTitle, QString &errorText, const QgsHttpHeaders &requestHeaders = QgsHttpHeaders(), QgsFeedback *feedback = nullptr, QString *contentType = nullptr );
 
    static QVariantMap queryServiceJSON( const QUrl &url, const QString &authcfg, QString &errorTitle, QString &errorText, const QgsHttpHeaders &requestHeaders = QgsHttpHeaders(), QgsFeedback *feedback = nullptr );
 
    static void visitFolderItems( const std::function<void ( const QString &folderName, const QString &url )> &visitor, const QVariantMap &serviceData, const QString &baseUrl );
 
    static void visitServiceItems( const std::function<void ( const QString &serviceName, const QString &url, const QString &service, ServiceTypeFilter serviceType )> &visitor, const QVariantMap &serviceData, const QString &baseUrl );
 
    static void addLayerItems( const std::function<void ( const QString &parentLayerId, ServiceTypeFilter serviceType, QgsWkbTypes::GeometryType geometryType, const QString &layerId, const QString &name, const QString &description, const QString &url, bool isParentLayer, const QString &authid, const QString &format )> &visitor, const QVariantMap &serviceData, const QString &parentUrl, const QString &parentSupportedFormats, const ServiceTypeFilter filter = AllTypes );
 
  private:
 
    static QUrl parseUrl( const QUrl &url );
    static void adjustBaseUrl( QString &baseUrl, const QString &name );
 
    friend class TestQgsArcGisRestUtils;
};
 
class CORE_EXPORT QgsArcGisAsyncQuery : public QObject
{
    Q_OBJECT
  public:
    QgsArcGisAsyncQuery( QObject *parent = nullptr );
    ~QgsArcGisAsyncQuery() override;
 
    void start( const QUrl &url, const QString &authCfg, QByteArray *result, bool allowCache = false, const QgsStringMap &headers = QgsStringMap() );
  signals:
    void finished();
    void failed( QString errorTitle, QString errorName );
  private slots:
    void handleReply();
 
  private:
    QNetworkReply *mReply = nullptr;
    QByteArray *mResult = nullptr;
};
 
class CORE_EXPORT QgsArcGisAsyncParallelQuery : public QObject
{
    Q_OBJECT
  public:
    QgsArcGisAsyncParallelQuery( const QString &authcfg, const QgsHttpHeaders &requestHeaders, QObject *parent = nullptr );
    void start( const QVector<QUrl> &urls, QVector<QByteArray> *results, bool allowCache = false );
 
  signals:
    void finished( QStringList errors );
  private slots:
    void handleReply();
 
  private:
    QVector<QByteArray> *mResults = nullptr;
    int mPendingRequests = 0;
    QStringList mErrors;
    QString mAuthCfg;
    QgsHttpHeaders mRequestHeaders;
};
 
 
#endif // QGSARCGISRESTQUERY_H