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// SPDX-License-Identifier: GPL-2.0
//
// infrastructure to deal with dive sites
//
#include "divesitehelpers.h"
#include "divesite.h"
#include "subsurface-string.h"
#include "qthelper.h"
#include "membuffer.h"
#include <QDebug>
#include <QJsonDocument>
#include <QJsonArray>
#include <QJsonObject>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QNetworkAccessManager>
#include <QUrlQuery>
#include <QEventLoop>
#include <QTimer>
#include <memory>
void reverseGeoLookup(degrees_t latitude, degrees_t longitude, taxonomy_data *taxonomy)
{
// By making the QNetworkAccessManager static and local to this function,
// only one manager exists for all geo-lookups and it is only initialized
// on first call to this function.
static QNetworkAccessManager rgl;
QNetworkRequest request;
QEventLoop loop;
QString geonamesURL("http://api.geonames.org/findNearbyPlaceNameJSON?lang=%1&lat=%2&lng=%3&radius=50&username=dirkhh");
QString geonamesOceanURL("http://api.geonames.org/oceanJSON?lang=%1&lat=%2&lng=%3&radius=50&username=dirkhh");
QTimer timer;
request.setRawHeader("Accept", "text/json");
request.setRawHeader("User-Agent", getUserAgent().toUtf8());
QObject::connect(&timer, SIGNAL(timeout()), &loop, SLOT(quit()));
// first check the findNearbyPlaces API from geonames - that should give us country, state, city
request.setUrl(geonamesURL.arg(uiLanguage(NULL).section(QRegExp("[-_ ]"), 0, 0)).arg(latitude.udeg / 1000000.0).arg(longitude.udeg / 1000000.0));
// By using a std::unique_ptr<>, we can exit from the function at any point
// and the reply will be freed. Likewise, when overwriting the pointer with
// a new value. According to Qt's documentation it is fine the delete the
// reply as long as we're not in a slot connected to error() or finish().
std::unique_ptr<QNetworkReply> reply(rgl.get(request));
timer.setSingleShot(true);
QObject::connect(&*reply, SIGNAL(finished()), &loop, SLOT(quit()));
timer.start(5000); // 5 secs. timeout
loop.exec();
if (timer.isActive()) {
timer.stop();
if (reply->error() > 0) {
report_error("got error accessing geonames.org: %s", qPrintable(reply->errorString()));
return;
}
int v = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (v < 200 || v >= 300)
return;
QByteArray fullReply = reply->readAll();
QJsonParseError errorObject;
QJsonDocument jsonDoc = QJsonDocument::fromJson(fullReply, &errorObject);
if (errorObject.error != QJsonParseError::NoError) {
report_error("error parsing geonames.org response: %s", qPrintable(errorObject.errorString()));
return;
}
QJsonObject obj = jsonDoc.object();
QVariant geoNamesObject = obj.value("geonames").toVariant();
QVariantList geoNames = geoNamesObject.toList();
if (geoNames.count() > 0) {
QVariantMap firstData = geoNames.at(0).toMap();
int ri = 0, l3 = -1, lt = -1;
if (taxonomy->category == NULL) {
taxonomy->category = alloc_taxonomy();
} else {
// clear out the data (except for the ocean data)
int ocean;
if ((ocean = taxonomy_index_for_category(taxonomy, TC_OCEAN)) > 0) {
taxonomy->category[0] = taxonomy->category[ocean];
taxonomy->nr = 1;
} else {
// ocean is -1 if there is no such entry, and we didn't copy above
// if ocean is 0, so the following gets us the correct count
taxonomy->nr = ocean + 1;
}
}
// get all the data - OCEAN is special, so start at COUNTRY
for (int j = TC_COUNTRY; j < TC_NR_CATEGORIES; j++) {
if (firstData[taxonomy_api_names[j]].isValid()) {
taxonomy->category[ri].category = j;
taxonomy->category[ri].origin = taxonomy_origin::GEOCODED;
free((void *)taxonomy->category[ri].value);
taxonomy->category[ri].value = copy_qstring(firstData[taxonomy_api_names[j]].toString());
ri++;
}
}
taxonomy->nr = ri;
l3 = taxonomy_index_for_category(taxonomy, TC_ADMIN_L3);
lt = taxonomy_index_for_category(taxonomy, TC_LOCALNAME);
if (l3 == -1 && lt != -1) {
// basically this means we did get a local name (what we call town), but just like most places
// we didn't get an adminName_3 - which in some regions is the actual city that town belongs to,
// then we copy the town into the city
taxonomy->category[ri].value = copy_string(taxonomy->category[lt].value);
taxonomy->category[ri].origin = taxonomy_origin::GEOCOPIED;
taxonomy->category[ri].category = TC_ADMIN_L3;
taxonomy->nr++;
}
} else {
report_error("geonames.org did not provide reverse lookup information");
qDebug() << "no reverse geo lookup; geonames returned\n" << fullReply;
}
} else {
report_error("timeout accessing geonames.org");
QObject::disconnect(&*reply, SIGNAL(finished()), &loop, SLOT(quit()));
reply->abort();
}
// next check the oceans API to figure out the body of water
request.setUrl(geonamesOceanURL.arg(uiLanguage(NULL).section(QRegExp("[-_ ]"), 0, 0)).arg(latitude.udeg / 1000000.0).arg(longitude.udeg / 1000000.0));
reply.reset(rgl.get(request)); // Note: frees old reply.
QObject::connect(&*reply, SIGNAL(finished()), &loop, SLOT(quit()));
timer.start(5000); // 5 secs. timeout
loop.exec();
if (timer.isActive()) {
timer.stop();
if (reply->error() > 0) {
report_error("got error accessing oceans API of geonames.org: %s", qPrintable(reply->errorString()));
return;
}
int v = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (v < 200 || v >= 300)
return;
QByteArray fullReply = reply->readAll();
QJsonParseError errorObject;
QJsonDocument jsonDoc = QJsonDocument::fromJson(fullReply, &errorObject);
if (errorObject.error != QJsonParseError::NoError) {
report_error("error parsing geonames.org response: %s", qPrintable(errorObject.errorString()));
return;
}
QJsonObject obj = jsonDoc.object();
QVariant oceanObject = obj.value("ocean").toVariant();
QVariantMap oceanName = oceanObject.toMap();
if (oceanName["name"].isValid()) {
int idx;
if (taxonomy->category == NULL)
taxonomy->category = alloc_taxonomy();
idx = taxonomy_index_for_category(taxonomy, TC_OCEAN);
if (idx == -1)
idx = taxonomy->nr;
if (idx < TC_NR_CATEGORIES) {
taxonomy->category[idx].category = TC_OCEAN;
taxonomy->category[idx].origin = taxonomy_origin::GEOCODED;
taxonomy->category[idx].value = copy_qstring(oceanName["name"].toString());
if (idx == taxonomy->nr)
taxonomy->nr++;
}
}
} else {
report_error("timeout accessing geonames.org");
QObject::disconnect(&*reply, SIGNAL(finished()), &loop, SLOT(quit()));
reply->abort();
}
}
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