Add optional support for Yandex.Maps static API

You could enable it via CMake option KEPKA_OPTION_USE_YANDEX_MAPS:
cmake -DKEPKA_OPTION_USE_YANDEX_MAPS=ON ..

It is used instead of Google Maps API for locations and on location click.
Sometimes Google Maps return no maps data. It is related with recent free
API usages count decrease from 750k requests to 28k (according to
https://habr.com/post/417715/).

The code on this commit should be cleaned up and rewritten using Maps API
string builders.

CMakeLists.txt

@@ -13,6 +13,15 @@ if(PROJECT_VERSION_RC)
     set(PROJECT_VERSION "${PROJECT_VERSION}-rc${PROJECT_VERSION_RC}")
 endif()
 
+##================================================
+## Build customizations
+##================================================
+option(KEPKA_OPTION_USE_YANDEX_MAPS "Use Yandex.Maps static API for locations (instead Google Maps)" OFF)
+
+if(KEPKA_OPTION_USE_YANDEX_MAPS)
+	add_definitions("-DKEPKA_USE_YANDEX_MAPS")
+endif()
+
 set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/modules/")
 
 if (CMAKE_VERSION VERSION_GREATER_EQUAL 3.10)

Telegram/SourceFiles/history/history_location_manager.cpp

@@ -48,10 +48,20 @@ void LocationClickHandler::onClick(Qt::MouseButton button) const {
 	}
 }
 
+// This option could be enabled in core CMakeLists.txt
+#ifdef KEPKA_USE_YANDEX_MAPS
+void LocationClickHandler::setup() {
+	// Yandex.Maps accepts ll string in "longitude,latitude" format
+	auto latlon = _coords.lonAsString() + "%2C" + _coords.latAsString();
+	_text = qsl("https://maps.yandex.ru/?ll=") + latlon + qsl("&z=16");
+}
+
+#else
 void LocationClickHandler::setup() {
 	auto latlon = _coords.latAsString() + ',' + _coords.lonAsString();
 	_text = qsl("https://maps.google.com/maps?q=") + latlon + qsl("&ll=") + latlon + qsl("&z=16");
 }
+#endif
 
 namespace {
 LocationManager *locationManager = nullptr;
@@ -133,14 +143,28 @@ void LocationManager::getData(LocationData *data) {
 		w = convertScale(w);
 		h = convertScale(h);
 	}
+#ifdef KEPKA_USE_YANDEX_MAPS
+	// see https://tech.yandex.ru/maps/doc/staticapi/1.x/dg/concepts/input_params-docpage/ for API parameters reference.
+	auto coords = data->coords.lonAsString() + ',' + data->coords.latAsString(); // Yandex.Maps accepts ll string in "longitude,latitude" format
+	const char *mapsApiUrl = "https://static-maps.yandex.ru/1.x/?ll=";
+	QString mapsApiParams = "&z=%1&size=%2,%3&l=map&scale=%4&pt=";
+	const char *mapsMarkerParams = ",pm2rdl"; // red large marker looking like "9"
+#else
 	auto coords = data->coords.latAsString() + ',' + data->coords.lonAsString();
-	QString url = qsl("https://maps.googleapis.com/maps/api/staticmap?center=") + coords +
-	              qsl("&zoom=%1&size=%2x%3&maptype=roadmap&scale=%4&markers=color:red|size:big|")
+	const char *mapsApiUrl = "https://maps.googleapis.com/maps/api/staticmap?center=";
+	QString mapsApiParams = "&zoom=%1&size=%2,%3&maptype=roadmap&scale=%4&markers=color:red|size:big|";
+	const char *mapsMarkerParams = "&sensor=false";
+#endif
+	QString url = // qsl("https://maps.googleapis.com/maps/api/staticmap?center=") + coords +
+	              // qsl("&zoom=%1&size=%2x%3&maptype=roadmap&scale=%4&markers=color:red|size:big|")
+		mapsApiUrl + coords + mapsApiParams
 	                  .arg(zoom)
 	                  .arg(w)
 	                  .arg(h)
 	                  .arg(scale) +
-	              coords + qsl("&sensor=false");
+	              coords
+		      + mapsMarkerParams;
+		      //+ qsl("&sensor=false");
 	QNetworkReply *reply = manager->get(QNetworkRequest(QUrl(url)));
 	imageLoadings[reply] = data;
 }