Set up location-driven Geotriggers

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// [WriteFile Name=Geotriggers, Category=Analysis]
// [Legal]
// Copyright 2021 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]

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

#include "Geotriggers.h"

#include "ArcadeExpression.h"
#include "FenceGeotrigger.h"
#include "FenceGeotriggerNotificationInfo.h"
#include "GeotriggerNotificationInfo.h"
#include "GeotriggerMonitor.h"
#include "GeotriggersTypes.h"
#include "FeatureFenceParameters.h"
#include "LocationGeotriggerFeed.h"
#include "LocationDisplay.h"
#include "Map.h"
#include "MapQuickView.h"
#include "MapViewTypes.h"
#include "PortalItem.h"
#include "ServiceFeatureTable.h"
#include "SimulatedLocationDataSource.h"
#include "SimulationParameters.h"
#include "ArcGISFeature.h"
#include "AttributeListModel.h"
#include "Attachment.h"
#include "AttachmentListModel.h"
#include "Polyline.h"

#include <QFuture>
#include <QUuid>
#include <QDateTime>

using namespace Esri::ArcGISRuntime;

namespace
{
const QString walkingTourPolyineJson("{\"paths\":[[[-119.709881177746,34.4570041646846],[-119.709875813328,34.4570152227745],[-119.709869107805,34.4570240692453],[-119.709859720074,34.4570351273326],[-119.709853014551,34.4570539260775],[-119.709847650133,34.4570760422426],[-119.709848991238,34.4570926293626],[-119.70985569676,34.4571103222869],[-119.709873131119,34.4571202745552],[-119.709889224373,34.4571302268223],[-119.709902635418,34.4571357558591],[-119.709910682045,34.4571600836165],[-119.709910682045,34.4571744591062],[-119.709902635418,34.4571833055602],[-119.709889224373,34.4571910462067],[-119.70988251885,34.4571965752394],[-119.70988251885,34.4572032100782],[-119.709889224373,34.4572175855605],[-119.709898612104,34.4572264320099],[-119.709912023149,34.4572341726524],[-119.709901294313,34.4572419132941],[-119.709895929895,34.4572507597409],[-119.709897271,34.4572596061868],[-119.709902635418,34.4572728758539],[-119.709902635418,34.4572828281028],[-119.70990934094,34.457294991961],[-119.709912023149,34.4573038384022],[-119.709886542164,34.4573115790375],[-119.709861061178,34.4573248486963],[-119.709843626819,34.4573414357669],[-119.709836921297,34.4573668692686],[-119.709843626819,34.4573934085666],[-119.709827533565,34.4574055724087],[-119.709791323744,34.4574188420525],[-119.709749749504,34.4574332174977],[-119.709709516369,34.4574431697275],[-119.709734997354,34.4574807670294],[-119.709748062646,34.4575248306656],[-119.709757450378,34.4575635337324],[-119.709770861423,34.457600025179],[-119.709785613572,34.4576387282109],[-119.70980573014,34.4576730080242],[-119.709815117871,34.4577117110223],[-119.709821823394,34.4577504140025],[-119.709821823394,34.4577869053674],[-119.709821823394,34.4578256083127],[-119.70981780008,34.4578609938471],[-119.709819141185,34.457906331541],[-119.70981460448,34.4579890675855],[-119.709818627793,34.4580675790658],[-119.70982667442,34.4581118108532],[-119.709832038838,34.4581471962662],[-119.709834721047,34.4581947453913],[-119.709836062152,34.4582323423548],[-119.709834721047,34.4582787856393],[-119.709805216748,34.4583429215611],[-119.709759619195,34.4584026342716],[-119.709700610597,34.4584612411497],[-119.709645400048,34.4585103926263],[-119.709566274882,34.4585457778704],[-119.709493855239,34.4585944325566],[-119.709458986522,34.458622077252],[-119.709424117805,34.4586198656767],[-119.709386566878,34.4586110193749],[-119.70935438037,34.4586110193749],[-119.709339628221,34.4586231830396],[-119.709324876071,34.4586585682359],[-119.709306100608,34.4586862129101],[-119.709269890786,34.4587171749343],[-119.709244409801,34.4587238096523],[-119.709229657651,34.4587293385835],[-119.709212223293,34.4587459253751],[-119.70919076562,34.4587945799446],[-119.709174672366,34.4588503400161],[-119.709157238008,34.4589288506865],[-119.709153214694,34.4589951976744],[-119.709155896903,34.4590449578807],[-119.70916394353,34.4590958238387],[-119.709186742307,34.4591323146156],[-119.709218928815,34.4591621706939],[-119.709237704278,34.4591831805204],[-119.709241727592,34.4592252001575],[-119.709238133851,34.459258658624],[-119.709219358388,34.4592796684262],[-119.709207288447,34.4592962551085],[-119.709208629552,34.4593084186733],[-119.709271661463,34.4593791884701],[-119.709310553494,34.4594267368937],[-119.709330670062,34.4594510639836],[-119.709353468838,34.4595008239182],[-119.70936285657,34.4595362087426],[-119.709423221989,34.4595943612845],[-119.709455408497,34.4596297460692],[-119.709487595005,34.459665130839],[-119.709507711573,34.4596817174446],[-119.709523804827,34.4596861405389],[-119.709557332439,34.4596894578594],[-119.709586836739,34.4596894578594],[-119.709593542261,34.4596772943501],[-119.709590860052,34.4596496500041],[-119.709572084589,34.4595777746615],[-119.709566720171,34.4595313320996],[-119.709578790112,34.4595136396883],[-119.709590860052,34.4594992646013],[-119.709627069874,34.4594882068404],[-119.709675349636,34.4595567649343],[-119.709735699339,34.4596197941001],[-119.709775932474,34.4596795058974],[-119.709802754564,34.4597126790997],[-119.709832258863,34.4597359003334],[-119.70986712758,34.4597171021923],[-119.70986980979,34.4596839289918],[-119.709865786476,34.4596308518435],[-119.709876515312,34.4595788804365],[-119.70988187973,34.4595346494263],[-119.709879197521,34.4594926299449],[-119.709852375431,34.4594539277723],[-119.709806777878,34.4593953215911],[-119.709767885847,34.4593212344729],[-119.709720947189,34.4592195028005],[-119.709708720088,34.4591478732967],[-119.709710061193,34.4591058536206],[-119.709707378984,34.459079314867],[-119.709652393699,34.4590262373344],[-119.709617524982,34.4589499383221],[-119.709626771268,34.4588695962162],[-119.709683097658,34.4588032491285],[-119.709730036316,34.4587391135603],[-119.709759540615,34.4586993052518],[-119.7097850216,34.4586650258598],[-119.710059948024,34.4587744987075],[-119.710104204473,34.4587932970608],[-119.710128443889,34.4587649224307],[-119.71019415801,34.4587096331253],[-119.710273283176,34.45867314216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const QString sectionGeotriggerName = "Section Geotrigger";
const QString poiGeotriggerName = "POI Geotrigger";
}

Geotriggers::Geotriggers(QObject* parent /* = nullptr */):
  QObject(parent)
{
  // This sample uses a web map with a predefined tile basemap, feature styles, and labels
  m_map = new Map(new PortalItem("6ab0e91dc39e478cae4f408e1a36a308", this), this);

  // Instantiate the service feature tables to later create GeotriggerMonitors for
  m_gardenSections = new ServiceFeatureTable(new PortalItem("1ba816341ea04243832136379b8951d9", this), 0, this);
  m_gardenPois = new ServiceFeatureTable(new PortalItem("7c6280c290c34ae8aeb6b5c4ec841167", this), 0, this);
}

Geotriggers::~Geotriggers() = default;

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

// Create READ functions for Q_PROPERTIES like the information about sections and POIs
MapQuickView* Geotriggers::mapView() const
{
  return m_mapView;
}

QString Geotriggers::currentSection() const
{
  if (!m_currentFeaturesEntered[sectionGeotriggerName].isEmpty())
    return m_currentFeaturesEntered[sectionGeotriggerName].last();

  return "N/A";
}

QStringList Geotriggers::poisInRange() const
{
  return m_currentFeaturesEntered[poiGeotriggerName];
}

QString Geotriggers::currentDescription() const
{
  return m_currentFeatureDescription;
}

QUrl Geotriggers::currentImageUrl() const
{
  return m_currentFeatureImageUrl;
}

// Set the map view - once that is done we can instantiate the location display and geotrigger monitors
void Geotriggers::setMapView(MapQuickView* mapView)
{
  if (!mapView || mapView == m_mapView)
    return;

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

  emit mapViewChanged();

  // Start the simulated location display data source and create a LocationGeotriggerFeed that will be required in createGeotriggerMonitor()
  initializeSimulatedLocationDisplay();

  // Create geotriggers for each of the service feature tables
  createGeotriggerMonitor(m_gardenSections, 0.0, sectionGeotriggerName);
  createGeotriggerMonitor(m_gardenPois, 10.0, poiGeotriggerName);
}

void Geotriggers::initializeSimulatedLocationDisplay()
{
  m_simulatedLocationDataSource = new SimulatedLocationDataSource(this);

  // Create SimulationParameters starting at the current time, a velocity of 5 m/s, and a horizontal and vertical accuracy of 0.0
  SimulationParameters* simulationParameters = new SimulationParameters(QDateTime::currentDateTime(), 5.0, 0.0, 0.0, this);

  // Use the polyline as defined above or from this AGOL GeoJSON to define the path. retrieved from https://https://arcgisruntime.maps.arcgis.com/home/item.html?id=2a346cf1668d4564b8413382ae98a956
  m_simulatedLocationDataSource->setLocationsWithPolyline(
        geometry_cast<Polyline>(Polyline::fromJson(walkingTourPolyineJson)), simulationParameters);

  m_mapView->locationDisplay()->setDataSource(m_simulatedLocationDataSource);
  m_mapView->locationDisplay()->setAutoPanMode(LocationDisplayAutoPanMode::Recenter);
  m_mapView->locationDisplay()->setInitialZoomScale(1000);
  m_mapView->locationDisplay()->start();

  m_simulatedLocationDataSource->start();

  // LocationGeotriggerFeed will be used in instantiating a FenceGeotrigger in createGeotriggerMonitor()
  m_geotriggerFeed = new LocationGeotriggerFeed(m_simulatedLocationDataSource, this);
}

// This function is used to create two geotrigger monitors in this sample - one for the sections and one for the points of interest
// The parameters for this function are the only differences between the two geotrigger monitors
void Geotriggers::createGeotriggerMonitor(ServiceFeatureTable* serviceFeatureTable, double bufferSize, const QString& geotriggerName)
{
  FeatureFenceParameters* featureFenceParameters = new FeatureFenceParameters(serviceFeatureTable, bufferSize, this);
  // The ArcadeExpression defined in the following FenceGeotrigger returns the value for the "name" field of the feature that triggered the monitor
  FenceGeotrigger* fenceGeotrigger = new FenceGeotrigger(m_geotriggerFeed, FenceRuleType::EnterOrExit, featureFenceParameters, new ArcadeExpression("$fencefeature.name", this), geotriggerName, this);
  GeotriggerMonitor* geotriggerMonitor = new GeotriggerMonitor(fenceGeotrigger, this);

  connect(geotriggerMonitor, &GeotriggerMonitor::geotriggerNotification, this, &Geotriggers::handleGeotriggerNotification);

  // startAsync must be explicitly called. It is called after the signal connection is defined to avoid a race condition in Qt.
  auto future = geotriggerMonitor->startAsync();
  Q_UNUSED(future)
}

void Geotriggers::handleGeotriggerNotification(GeotriggerNotificationInfo* geotriggerNotificationInfo)
{
  // Create a QScopedPointer so GeotriggerNotificationInfo does not persist outside this scope
  QScopedPointer<GeotriggerNotificationInfo> scopedNotification(geotriggerNotificationInfo);

  // GeotriggerNotificationInfo provides access to information about the geotrigger that was triggered
  QString geotriggerName = geotriggerNotificationInfo->geotriggerMonitor()->geotrigger()->name();

  // message() returns the evaluated arcade expression defined in the FenceGeotrigger, "$fencefeatue.name" in this case
  QString featureName = geotriggerNotificationInfo->message();

  // FenceGeotriggerNotificationInfo provides access to the feature that triggered the notification
  FenceGeotriggerNotificationInfo* fenceGeotriggerNotificationInfo = static_cast<FenceGeotriggerNotificationInfo*>(geotriggerNotificationInfo);
  GeoElement* fenceGeoElement = fenceGeotriggerNotificationInfo->fenceGeoElement();

  ArcGISFeature* fenceFeature = dynamic_cast<ArcGISFeature*>(fenceGeoElement);

  if (fenceGeotriggerNotificationInfo->fenceNotificationType() == FenceNotificationType::Entered)
  {
    // If the user enters a given geofence, add the feature's information to the UI and save the feature for querying.
    m_currentFeaturesEntered[geotriggerName].append(featureName);

    if (!m_featureQMap.contains(featureName))
    {
      // Set the parent to the Geotriggers QObject so the feature is still available outside the scope of this function
      fenceFeature->setParent(this);
      m_featureQMap[featureName] = fenceFeature;
    }
  }
  else
  {
    // If the user leaves the geofence, remove the information from the UI
    m_currentFeaturesEntered[geotriggerName].removeAll(featureName);
  }

  emit displayInfoChanged();
}

void Geotriggers::getFeatureInformation(const QString& sectionName)
{
  // Recenter the camera on the user if need be
  m_mapView->locationDisplay()->setAutoPanMode(LocationDisplayAutoPanMode::Recenter);

  // Clear feature description and image of the previous query
  m_currentFeatureImageUrl = QUrl("");

  QMap<QString, ArcGISFeature*>::iterator findIt = m_featureQMap.find(sectionName);

  if (findIt == m_featureQMap.end())
  {
    m_currentFeatureDescription = "Unable to find information for this Garden feature.";
    emit displayInfoChanged();
    return;
  }

  ArcGISFeature* feature = *findIt;
  m_currentFeatureDescription = feature->attributes()->attributeValue("description").toString();

  if (m_featureAttachmentImageUrls.contains(sectionName))
  {
    m_currentFeatureImageUrl = m_featureAttachmentImageUrls[sectionName];
    emit displayInfoChanged();
    return;
  }

  emit displayInfoChanged();

  AttachmentListModel* featureAttachments = feature->attachments();

  // Fetch attachments will automatically trigger upon instantiation of the AttachmentListModel
  connect(featureAttachments, &AttachmentListModel::fetchAttachmentsCompleted, this, [this, sectionName](const QUuid&, const QList<Attachment*>& attachments)
  {
    if (attachments.isEmpty())
      return;

    // Get the first (and only) attachment for the feature
    Attachment* sectionImageAttachment = attachments.first();

    sectionImageAttachment->fetchDataAsync().then(this, [this, sectionImageAttachment, sectionName](const QByteArray&)
    {
      m_featureAttachmentImageUrls[sectionName] = sectionImageAttachment->attachmentUrl();
      m_currentFeatureImageUrl = m_featureAttachmentImageUrls[sectionName];
      emit displayInfoChanged();
    });
  });
}