Proof of concept for reverse geo location

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>

1 files changed, 38 insertions, 0 deletions

diff --git a/qthelper.cpp b/qthelper.cpp
index 8d4703b0a..a4b644304 100644
--- a/qthelper.cpp
+++ b/qthelper.cpp
@@ -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());
+	}
+}