qgeocodereplyosm.cpp

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// Copyright (C) 2016 Aaron McCarthy <mccarthy.aaron@gmail.com>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qgeocodereplyosm.h"
 
#include <QtCore/QJsonDocument>
#include <QtCore/QJsonObject>
#include <QtCore/QJsonArray>
#include <QtPositioning/QGeoCoordinate>
#include <QtPositioning/QGeoAddress>
#include <QtPositioning/QGeoLocation>
#include <QtPositioning/QGeoRectangle>
#include <QtLocation/private/qgeojson_p.h>
 
QT_BEGIN_NAMESPACE
 
QGeoCodeReplyOsm::QGeoCodeReplyOsm(QNetworkReply *reply, bool includeExtraData, QObject *parent)
:   QGeoCodeReply(parent), m_includeExtraData(includeExtraData)
{
    if (!reply) {
        setError(UnknownError, QStringLiteral("Null reply"));
        return;
    }
    connect(reply, &QNetworkReply::finished,
            this, &QGeoCodeReplyOsm::networkReplyFinished);
    connect(reply, &QNetworkReply::errorOccurred,
            this, &QGeoCodeReplyOsm::networkReplyError);
    connect(this, &QGeoCodeReply::aborted, reply, &QNetworkReply::abort);
    connect(this, &QObject::destroyed, reply, &QObject::deleteLater);
    setLimit(1);
    setOffset(0);
}
 
QGeoCodeReplyOsm::~QGeoCodeReplyOsm()
{
}
 
static QGeoAddress parseAddressObject(const QJsonObject &object)
{
    QGeoAddress address;
    address.setText(object.value(QStringLiteral("display_name")).toString());
    QJsonObject ao = object.value(QStringLiteral("address")).toObject();
    // setCountry
    address.setCountry(ao.value(QStringLiteral("country")).toString());
    // setCountryCode
    address.setCountryCode(ao.value(QStringLiteral("country_code")).toString());
    // setState
    address.setState(ao.value(QStringLiteral("state")).toString());
    // setCity
    if (ao.contains(QLatin1String("city")))
        address.setCity(ao.value(QStringLiteral("city")).toString());
    else if (ao.contains(QLatin1String("town")))
        address.setCity(ao.value(QLatin1String("town")).toString());
    else if (ao.contains(QLatin1String("village")))
        address.setCity(ao.value(QLatin1String("village")).toString());
    else
        address.setCity(ao.value(QLatin1String("hamlet")).toString());
    // setDistrict
    address.setDistrict(ao.value(QStringLiteral("suburb")).toString());
    // setPostalCode
    address.setPostalCode(ao.value(QStringLiteral("postcode")).toString());
    // setStreet
    address.setStreet(ao.value(QStringLiteral("road")).toString());
    return address;
}
 
static void injectExtra(QGeoLocation &location, const QJsonObject &object)
{
    QVariantMap extra;
    static const QList<QString> extraKeys = {  QStringLiteral("geojson"),
                                               QStringLiteral("icon"),
                                               QStringLiteral("importance"),
                                               QStringLiteral("type"),
                                               QStringLiteral("osm_id"),
                                               QStringLiteral("osm_type"),
                                               QStringLiteral("licence"),
                                               QStringLiteral("place_id"),
                                               QStringLiteral("class") };
 
    for (const auto &k: extraKeys) {
        if (object.contains(k)) {
            extra[k] = object.value(k).toVariant();
            if (k == QStringLiteral("geojson"))
                extra[QStringLiteral("geojson_model")] =
                        QGeoJson::importGeoJson(QJsonDocument::fromVariant(extra[k]));
        }
    }
 
    location.setExtendedAttributes(extra);
}
 
void QGeoCodeReplyOsm::networkReplyFinished()
{
    QNetworkReply *reply = static_cast<QNetworkReply *>(sender());
    reply->deleteLater();
 
    if (reply->error() != QNetworkReply::NoError)
        return;
 
    QList<QGeoLocation> locations;
    QJsonDocument document = QJsonDocument::fromJson(reply->readAll());
 
    if (document.isObject()) {
        QJsonObject object = document.object();
 
        QGeoCoordinate coordinate;
 
        coordinate.setLatitude(object.value(QStringLiteral("lat")).toString().toDouble());
        coordinate.setLongitude(object.value(QStringLiteral("lon")).toString().toDouble());
 
        QGeoLocation location;
        location.setCoordinate(coordinate);
        location.setAddress(parseAddressObject(object));
 
        if (m_includeExtraData)
            injectExtra(location, object);
        locations.append(location);
 
        setLocations(locations);
    } else if (document.isArray()) {
        QJsonArray results = document.array();
 
        for (int i = 0; i < results.count(); ++i) {
            if (!results.at(i).isObject())
                continue;
 
            QJsonObject object = results.at(i).toObject();
 
            QGeoCoordinate coordinate;
 
            coordinate.setLatitude(object.value(QStringLiteral("lat")).toString().toDouble());
            coordinate.setLongitude(object.value(QStringLiteral("lon")).toString().toDouble());
 
            QGeoRectangle rectangle;
 
            if (object.contains(QStringLiteral("boundingbox"))) {
                QJsonArray a = object.value(QStringLiteral("boundingbox")).toArray();
                if (a.count() == 4) {
                    rectangle.setTopLeft(QGeoCoordinate(a.at(1).toString().toDouble(),
                                                        a.at(2).toString().toDouble()));
                    rectangle.setBottomRight(QGeoCoordinate(a.at(0).toString().toDouble(),
                                                            a.at(3).toString().toDouble()));
                }
            }
 
            QGeoLocation location;
            location.setCoordinate(coordinate);
            location.setBoundingShape(rectangle);
            location.setAddress(parseAddressObject(object));
            if (m_includeExtraData)
                injectExtra(location, object);
            locations.append(location);
        }
 
    }
 
    setLocations(locations);
    setFinished(true);
}
 
void QGeoCodeReplyOsm::networkReplyError(QNetworkReply::NetworkError error)
{
    Q_UNUSED(error);
    QNetworkReply *reply = static_cast<QNetworkReply *>(sender());
    reply->deleteLater();
    setError(QGeoCodeReply::CommunicationError, reply->errorString());
}
 
QT_END_NAMESPACE