Change Street Map from WikiMedia to OpenStreetMap, as Wikimedia servers are no longer available. For #1709

plugins/feature/map/mapgui.cpp

@@ -23,6 +23,7 @@
 #include <QGeoCoordinate>
 #include <QGeoCodingManager>
 #include <QGeoServiceProvider>
+#include <QSettings>
 
 #ifdef QT_WEBENGINE_FOUND
 #include <QtWebEngineWidgets/QWebEngineView>
@@ -213,6 +214,8 @@ MapGUI::MapGUI(PluginAPI* pluginAPI, FeatureUISet *featureUISet, Feature *featur
         ui->map->setFormat(format);
     }
 
+    clearWikiMediaOSMCache();
+
     m_osmPort = 0;
     m_templateServer = new OSMTemplateServer(thunderforestAPIKey(), maptilerAPIKey(), m_osmPort);
 
@@ -1106,6 +1109,31 @@ void MapGUI::clearOSMCache()
     }
 }
 
+// Delete old cache if it might contain wikimedia OSM images before switch to using OSM directly
+// as the images are different
+void MapGUI::clearWikiMediaOSMCache()
+{
+    QSettings settings;
+    QString cacheCleared = "sdrangel.feature.map/cacheCleared";
+    if (!settings.value(cacheCleared).toBool())
+    {
+        qDebug() << "MapGUI::clearWikiMediaOSMCache: Clearing cache";
+        QDir dir(osmCachePath());
+        if (dir.exists())
+        {
+            QStringList filenames = dir.entryList({"osm_100-l-1-*.png"});
+            for (const auto& filename : filenames)
+            {
+                QFile file(dir.filePath(filename));
+                if (!file.remove()) {
+                    qDebug() << "MapGUI::clearWikiMediaOSMCache: Failed to remove " << file;
+                }
+            }
+        }
+        settings.setValue(cacheCleared, true);
+    }
+}
+
 void MapGUI::applyMap2DSettings(bool reloadMap)
 {
     ui->map->setVisible(m_settings.m_map2DEnabled);