Add features (feature service)

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// [WriteFile Name=AddFeaturesFeatureService, Category=EditData]
// [Legal]
// Copyright 2022 Esri.

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]

#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD

#include "AddFeaturesFeatureService.h"

#include "Basemap.h"
#include "Feature.h"
#include "FeatureEditResult.h"
#include "FeatureLayer.h"
#include "LayerListModel.h"
#include "Map.h"
#include "MapQuickView.h"
#include "MapTypes.h"
#include "Point.h"
#include "ServiceFeatureTable.h"
#include "SpatialReference.h"
#include "TaskWatcher.h"
#include "Viewpoint.h"

#include <QMap>
#include <QMouseEvent>
#include <QUrl>
#include <QUuid>
#include <QVariant>

using namespace Esri::ArcGISRuntime;

namespace
{
  // Convenience RAII struct that deletes all pointers in given container.
  struct FeatureListResultLock
  {
    FeatureListResultLock(const QList<FeatureEditResult*>& list) : results(list) { }
    ~FeatureListResultLock() { qDeleteAll(results); }
    const QList<FeatureEditResult*>& results;
  };
}

AddFeaturesFeatureService::AddFeaturesFeatureService(QObject* parent /* = nullptr */):
  QObject(parent),
  m_map(new Map(BasemapStyle::ArcGISStreets, this))
{
  m_map->setInitialViewpoint(Viewpoint(Point(-10800000, 4500000, SpatialReference(102100)), 3e7));

  m_featureTable = new ServiceFeatureTable(QUrl("https://sampleserver6.arcgisonline.com/arcgis/rest/services/DamageAssessment/FeatureServer/0"), this);
  m_featureLayer = new FeatureLayer(m_featureTable, this);
  m_map->operationalLayers()->append(m_featureLayer);
}

AddFeaturesFeatureService::~AddFeaturesFeatureService() = default;

void AddFeaturesFeatureService::init()
{
  // Register the map view for QML
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<AddFeaturesFeatureService>("Esri.Samples", 1, 0, "AddFeaturesFeatureServiceSample");
}

MapQuickView* AddFeaturesFeatureService::mapView() const
{
  return m_mapView;
}

// Set the view (created in QML)
void AddFeaturesFeatureService::setMapView(MapQuickView* mapView)
{
  if (!mapView || mapView == m_mapView)
    return;

  m_mapView = mapView;
  m_mapView->setMap(m_map);

  emit mapViewChanged();

  connectSignals();
}

void AddFeaturesFeatureService::connectSignals()
{
  //! [AddFeaturesFeatureService add at mouse click]
  // connect to the mouse clicked signal on the MapQuickView
  connect(m_mapView, &MapQuickView::mouseClicked, this, [this](QMouseEvent& mouseEvent)
  {
    // obtain the map point
    const double screenX = mouseEvent.position().x();
    const double screenY = mouseEvent.position().y();
    Point newPoint = m_mapView->screenToLocation(screenX, screenY);

    // create the feature attributes
    QMap<QString, QVariant> featureAttributes;
    featureAttributes.insert("typdamage", "Minor");
    featureAttributes.insert("primcause", "Earthquake");

    // create a new feature and add it to the feature table
    Feature* feature = m_featureTable->createFeature(featureAttributes, newPoint, this);
    m_featureTable->addFeature(feature);
  });
  //! [AddFeaturesFeatureService add at mouse click]

  // connect to the addFeatureCompleted signal from the ServiceFeatureTable
  connect(m_featureTable, &ServiceFeatureTable::addFeatureCompleted, this, [this](const QUuid&, bool success)
  {
    // if add feature was successful, call apply edits
    if (success)
      m_featureTable->applyEdits();
  });

  // connect to the applyEditsCompleted signal from the ServiceFeatureTable
  connect(m_featureTable, &ServiceFeatureTable::applyEditsCompleted, this, [](const QUuid&, const QList<FeatureEditResult*>& featureEditResults)
  {
    // Lock is a convenience wrapper that deletes the contents of the list once we leave scope.
    FeatureListResultLock lock(featureEditResults);

    if (lock.results.isEmpty())
      return;

    // obtain the first item in the list
    FeatureEditResult* featureEditResult = lock.results.first();
    // check if there were errors, and if not, log the new object ID
    if (!featureEditResult->isCompletedWithErrors())
      qDebug() << "New Object ID is:" << featureEditResult->objectId();
    else
      qDebug() << "Apply edits error.";
  });
}