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Proof of concept for reverse geo location

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When reading a pre-v3 XML file, we now do reverse geo lookups on the GPS
coordinates and add the country to the dive site notes. Eventually this
wants to be a tag (once we implement tags for dive sites).

This is going to add quite a bit of delay when people open a V2 XML file -
depending on how many distinct GPS fixes they have. In my case with 127
GPS fixes it took about 20 seconds to open the file...

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2015-02-14 20:01:33 -08:00
parent a081fb34e0
commit 5bf86f6042
2 changed files with 43 additions and 1 deletions
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38
qthelper.cpp
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@ -1,6 +1,10 @@
#include "qthelper.h"
#include "helpers.h"
#include "gettextfromc.h"
#include "statistics.h"
#include "subsurfacewebservices.h"
#include "usersurvey.h"
#include "membuffer.h"
#include <exif.h>
#include "file.h"
#include <QFile>
@ -8,6 +12,15 @@
#include <QDir>
#include <QDebug>
#include <QSettings>
#include <QJsonDocument>
#include <QJsonArray>
#include <QJsonObject>
#include <QNetworkReply>
#include <QNetworkRequest>
#include <QNetworkAccessManager>
#include <QUrlQuery>
#include <QEventLoop>
#include <libxslt/documents.h>
#define translate(_context, arg) trGettext(arg)
@ -342,3 +355,28 @@ void selectedDivesGasUsed(QVector<QPair<QString, int> > &gasUsedOrdered)
}
qSort(gasUsedOrdered.begin(), gasUsedOrdered.end(), lessThan);
}
extern "C" void reverseGeoLookup(degrees_t latitude, degrees_t longitude, uint32_t uuid)
{
QNetworkRequest request;
QNetworkAccessManager *rgl = new QNetworkAccessManager();
request.setUrl(QString("http://open.mapquestapi.com/nominatim/v1/reverse.php?format=json&accept-language=%1&lat=%2&lon=%3")
.arg(uiLanguage(NULL)).arg(latitude.udeg / 1000000.0).arg(longitude.udeg / 1000000.0));
request.setRawHeader("Accept", "text/json");
request.setRawHeader("User-Agent", UserSurvey::getUserAgent().toUtf8());
QNetworkReply *reply = rgl->get(request);
QEventLoop loop;
QObject::connect(reply, SIGNAL(finished()), &loop, SLOT(quit()));
loop.exec();
QJsonParseError errorObject;
QJsonDocument jsonDoc = QJsonDocument::fromJson(reply->readAll(), &errorObject);
if (errorObject.error != QJsonParseError::NoError) {
qDebug() << errorObject.errorString();
} else {
QJsonObject obj = jsonDoc.object();
QJsonObject address = obj.value("address").toObject();
qDebug() << "found country:" << address.value("country").toString();
struct dive_site *ds = get_dive_site_by_uuid(uuid);
ds->notes = add_to_string(ds->notes, "countrytag: %s", address.value("country").toString().toUtf8().data());
}
}