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Location service: move into subsurface-core
While this is primarily something targeted at a mobile device, with many of the 2 in 1 devices it is possible that the user might be running the desktop version of Subsurface on a mobile device. As a first step to make it possible to collect GPS fixes on such a device we need to make the infrastructure to do so available in the desktop application as well. This still needs to be hooked up in the desktop UI. Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel
parent
0b804e5b21
commit
456cc3955a
6 changed files with 5 additions and 8 deletions
334
subsurface-core/gpslocation.cpp
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334
subsurface-core/gpslocation.cpp
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#include "gpslocation.h"
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#include "pref.h"
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#include "dive.h"
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#include "helpers.h"
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#include <time.h>
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#include <unistd.h>
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#include <QDebug>
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#include <QVariant>
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#include <QUrlQuery>
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#include <QApplication>
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#include <QTimer>
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#define GPS_FIX_ADD_URL "http://api.subsurface-divelog.org/api/dive/add/"
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#define GET_WEBSERVICE_UID_URL "https://cloud.subsurface-divelog.org/webuserid/"
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GpsLocation::GpsLocation(void (*showMsgCB)(const char *), QObject *parent)
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{
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showMessageCB = showMsgCB;
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// create a QSettings object that's separate from the main application settings
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geoSettings = new QSettings(QSettings::NativeFormat, QSettings::UserScope,
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QString("org.subsurfacedivelog"), QString("subsurfacelocation"), this);
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gpsSource = QGeoPositionInfoSource::createDefaultSource(parent);
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if (gpsSource != 0) {
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QString msg = QString("have position source %1").arg(gpsSource->sourceName());
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connect(gpsSource, SIGNAL(positionUpdated(QGeoPositionInfo)), this, SLOT(newPosition(QGeoPositionInfo)));
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connect(gpsSource, SIGNAL(updateTimeout()), this, SLOT(updateTimeout()));
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gpsSource->setUpdateInterval(5 * 60 * 1000); // 5 minutes so the device doesn't drain the battery
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} else {
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status("don't have GPS source");
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}
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userAgent = getUserAgent();
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}
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void GpsLocation::serviceEnable(bool toggle)
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{
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if (!gpsSource) {
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if (toggle)
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status("Can't start location service, no location source available");
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return;
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}
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if (toggle) {
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gpsSource->startUpdates();
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status("Starting Subsurface GPS service");
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} else {
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gpsSource->stopUpdates();
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status("Stopping Subsurface GPS service");
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}
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}
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void GpsLocation::newPosition(QGeoPositionInfo pos)
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{
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time_t lastTime;
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QGeoCoordinate lastCoord;
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QString msg("received new position %1");
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status(qPrintable(msg.arg(pos.coordinate().toString())));
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int nr = geoSettings->value("count", 0).toInt();
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if (nr) {
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lastCoord.setLatitude(geoSettings->value(QString("gpsFix%1_lat").arg(nr - 1)).toInt() / 1000000.0);
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lastCoord.setLongitude(geoSettings->value(QString("gpsFix%1_lon").arg(nr - 1)).toInt() / 1000000.0);
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lastTime = geoSettings->value(QString("gpsFix%1_time").arg(nr - 1)).toULongLong();
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}
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// if we have no record stored or if at least the configured minimum
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// time has passed or we moved at least the configured minimum distance
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if (!nr ||
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pos.timestamp().toTime_t() > lastTime + prefs.time_threshold ||
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lastCoord.distanceTo(pos.coordinate()) > prefs.distance_threshold) {
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geoSettings->setValue("count", nr + 1);
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geoSettings->setValue(QString("gpsFix%1_time").arg(nr), pos.timestamp().toTime_t());
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geoSettings->setValue(QString("gpsFix%1_lat").arg(nr), rint(pos.coordinate().latitude() * 1000000));
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geoSettings->setValue(QString("gpsFix%1_lon").arg(nr), rint(pos.coordinate().longitude() * 1000000));
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geoSettings->sync();
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}
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}
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void GpsLocation::updateTimeout()
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{
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status("request to get new position timed out");
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}
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void GpsLocation::status(QString msg)
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{
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qDebug() << msg;
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if (showMessageCB)
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(*showMessageCB)(qPrintable(msg));
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}
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QString GpsLocation::getUserid(QString user, QString passwd)
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{
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qDebug() << "called getUserid";
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QEventLoop loop;
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QTimer timer;
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timer.setSingleShot(true);
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QNetworkAccessManager *manager = new QNetworkAccessManager(qApp);
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QUrl url(GET_WEBSERVICE_UID_URL);
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QString data;
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data = user + " " + passwd;
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QNetworkRequest request;
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request.setUrl(url);
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request.setRawHeader("User-Agent", getUserAgent().toUtf8());
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request.setRawHeader("Accept", "text/html");
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request.setRawHeader("Content-type", "application/x-www-form-urlencoded");
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reply = manager->post(request, data.toUtf8());
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connect(&timer, &QTimer::timeout, &loop, &QEventLoop::quit);
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connect(reply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
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connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),
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this, SLOT(getUseridError(QNetworkReply::NetworkError)));
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timer.start(10000);
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loop.exec();
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if (timer.isActive()) {
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timer.stop();
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if (reply->error() == QNetworkReply::NoError) {
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QString result = reply->readAll();
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status(QString("received ") + result);
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result.remove("WebserviceID:");
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reply->deleteLater();
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return result;
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}
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} else {
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status("Getting Web service ID timed out");
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}
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reply->deleteLater();
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return QString();
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}
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int GpsLocation::getGpsNum() const
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{
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return geoSettings->value("count", 0).toInt();
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}
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struct gpsTracker {
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degrees_t latitude;
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degrees_t longitude;
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time_t when;
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};
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static void copy_gps_location(struct gpsTracker *gps, struct dive *d)
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{
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struct dive_site *ds = get_dive_site_by_uuid(d->dive_site_uuid);
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ds->latitude = gps->latitude;
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ds->longitude = gps->longitude;
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}
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#define SAME_GROUP 6 * 3600 /* six hours */
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bool GpsLocation::applyLocations()
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{
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int i;
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bool changed = false;
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int last = 0;
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int cnt = geoSettings->value("count", 0).toInt();
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if (cnt == 0)
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return false;
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// create a table with the GPS information
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struct gpsTracker *gpsTable = (struct gpsTracker *)calloc(cnt, sizeof(struct gpsTracker));
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for (int i = 0; i < cnt; i++) {
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gpsTable[i].latitude.udeg = geoSettings->value(QString("gpsFix%1_lat").arg(i)).toInt();
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gpsTable[i].longitude.udeg = geoSettings->value(QString("gpsFix%1_lon").arg(i)).toInt();
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gpsTable[i].when = geoSettings->value(QString("gpsFix%1_time").arg(i)).toULongLong();
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}
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// now walk the dive table and see if we can fill in missing gps data
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struct dive *d;
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for_each_dive(i, d) {
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if (dive_has_gps_location(d))
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continue;
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for (int j = last; j < cnt; j++) {
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if (time_during_dive_with_offset(d, gpsTable[j].when, SAME_GROUP)) {
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if (verbose)
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qDebug() << "processing gpsFix @" << get_dive_date_string(gpsTable[j].when) <<
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"which is withing six hours of dive from" <<
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get_dive_date_string(d->when) << "until" <<
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get_dive_date_string(d->when + d->duration.seconds);
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/*
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* If position is fixed during dive. This is the good one.
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* Asign and mark position, and end gps_location loop
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*/
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if (time_during_dive_with_offset(d, gpsTable[j].when, 0)) {
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if (verbose)
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qDebug() << "gpsFix is during the dive, pick that one";
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copy_gps_location(gpsTable + j, d);
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changed = true;
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last = j;
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break;
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} else {
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/*
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* If it is not, check if there are more position fixes in SAME_GROUP range
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*/
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if (j + 1 < cnt && time_during_dive_with_offset(d, gpsTable[j+1].when, SAME_GROUP)) {
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if (verbose)
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qDebug() << "look at the next gps fix @" << get_dive_date_string(gpsTable[j+1].when);
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/* first let's test if this one is during the dive */
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if (time_during_dive_with_offset(d, gpsTable[j+1].when, 0)) {
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if (verbose)
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qDebug() << "which is during the dive, pick that one";
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copy_gps_location(gpsTable + j + 1, d);
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changed = true;
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last = j + 1;
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break;
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}
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/* we know the gps fixes are sorted; if they are both before the dive, ignore the first,
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* if theay are both after the dive, take the first,
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* if the first is before and the second is after, take the closer one */
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if (gpsTable[j+1].when < d->when) {
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if (verbose)
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qDebug() << "which is closer to the start of the dive, do continue with that";
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continue;
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} else if (gpsTable[j].when > d->when + d->duration.seconds) {
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if (verbose)
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qDebug() << "which is even later after the end of the dive, so pick the previous one";
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copy_gps_location(gpsTable + j, d);
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changed = true;
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last = j;
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break;
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} else {
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/* ok, gpsFix is before, nextgpsFix is after */
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if (d->when - gpsTable[j].when <= gpsTable[j+1].when - (d->when + d->duration.seconds)) {
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if (verbose)
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qDebug() << "pick the one before as it's closer to the start";
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copy_gps_location(gpsTable + j, d);
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changed = true;
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last = j;
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break;
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} else {
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if (verbose)
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qDebug() << "pick the one after as it's closer to the start";
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copy_gps_location(gpsTable + j + 1, d);
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changed = true;
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last = j + 1;
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break;
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}
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}
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/*
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* If no more positions in range, the actual is the one. Asign, mark and end loop.
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*/
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} else {
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if (verbose)
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qDebug() << "which seems to be the best one for this dive, so pick it";
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copy_gps_location(gpsTable + j, d);
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changed = true;
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last = j;
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break;
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}
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}
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} else {
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/* If position is out of SAME_GROUP range and in the future, mark position for
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* next dive iteration and end the gps_location loop
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*/
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if (gpsTable[j].when >= d->when + d->duration.seconds + SAME_GROUP) {
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last = j;
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break;
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}
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}
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}
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}
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}
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void GpsLocation::clearGpsData()
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{
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geoSettings->clear();
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geoSettings->sync();
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}
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void GpsLocation::postError(QNetworkReply::NetworkError error)
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{
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status(QString("error when sending a GPS fix: %1").arg(reply->errorString()));
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}
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void GpsLocation::getUseridError(QNetworkReply::NetworkError error)
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{
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status(QString("error when retrieving Subsurface webservice user id: %1").arg(reply->errorString()));
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}
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void GpsLocation::uploadToServer()
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{
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// we want to do this one at a time (the server prefers that)
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QEventLoop loop;
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QTimer timer;
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timer.setSingleShot(true);
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QNetworkAccessManager *manager = new QNetworkAccessManager(qApp);
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QUrl url(GPS_FIX_ADD_URL);
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int count = geoSettings->value("count", 0).toInt();
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for (int i = 0; i < count; i++) {
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QDateTime dt;
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QUrlQuery data;
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if (geoSettings->contains(QString("gpsFix%1_uploaded").arg(i)))
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continue;
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time_t when = geoSettings->value(QString("gpsFix%1_time").arg(i), 0).toULongLong();
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dt.setTime_t(when);
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qDebug() << dt.toString() << get_dive_date_string(when);
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data.addQueryItem("login", prefs.userid);
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data.addQueryItem("dive_date", dt.toString("yyyy-MM-dd"));
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data.addQueryItem("dive_time", dt.toString("hh:mm"));
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data.addQueryItem("dive_latitude", QString::number(geoSettings->value(QString("gpsFix%1_lat").arg(i)).toInt() / 1000000.0));
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data.addQueryItem("dive_longitude", QString::number(geoSettings->value(QString("gpsFix%1_lon").arg(i)).toInt() / 1000000.0));
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QString name(geoSettings->value(QString("gpsFix%1_name").arg(i)).toString());
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if (name.isEmpty())
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name = "Auto-created dive";
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data.addQueryItem("dive_name", name);
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status(data.toString(QUrl::FullyEncoded).toUtf8());
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QNetworkRequest request;
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request.setUrl(url);
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request.setRawHeader("User-Agent", getUserAgent().toUtf8());
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request.setRawHeader("Accept", "text/json");
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request.setRawHeader("Content-type", "application/x-www-form-urlencoded");
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reply = manager->post(request, data.toString(QUrl::FullyEncoded).toUtf8());
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connect(&timer, &QTimer::timeout, &loop, &QEventLoop::quit);
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connect(reply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
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// somehoe I cannot get this to work with the new connect syntax:
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// connect(reply, &QNetworkReply::error, this, &GpsLocation::postError);
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connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),
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this, SLOT(postError(QNetworkReply::NetworkError)));
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timer.start(10000);
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loop.exec();
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if (timer.isActive()) {
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timer.stop();
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if (reply->error() != QNetworkReply::NoError) {
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QString response = reply->readAll();
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if (!response.contains("Duplicate entry")) {
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status(QString("Server response:") + reply->readAll());
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break;
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}
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}
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} else {
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status("Uploading to server timed out");
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break;
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}
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reply->deleteLater();
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status(QString("completed sending gps fix %1 - response: ").arg(i) + reply->readAll());
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geoSettings->setValue(QString("gpsFix%1_uploaded").arg(i), 1);
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}
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}
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