From 0152b24f13dff34a45971d3abab5e43d23046869 Mon Sep 17 00:00:00 2001
From: leha-bot <leha-bot@users.noreply.github.com>
Date: Tue, 2 Oct 2018 12:35:26 +0300
Subject: [PATCH] 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 will be cleaned up and rewritten using Maps API
string builders in next commit.
---
 CMakeLists.txt                                |  9 +++++
 .../history/history_location_manager.cpp      | 38 +++++++++++++++----
 2 files changed, 40 insertions(+), 7 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9981ade35..a8185fe88 100644
--- a/CMakeLists.txt
+++ b/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)
diff --git a/Telegram/SourceFiles/history/history_location_manager.cpp b/Telegram/SourceFiles/history/history_location_manager.cpp
index 0252cad8c..f355f18e4 100644
--- a/Telegram/SourceFiles/history/history_location_manager.cpp
+++ b/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.
+
+	// Yandex.Maps accepts ll string in "longitude,latitude" format
+	auto coords = data->coords.lonAsString() + ',' + data->coords.latAsString();
+	const char *mapsApiUrl = "https://static-maps.yandex.ru/1.x/?ll=";
+
+	// red large marker looking like "9"
+	const char *mapsMarkerParams = ",pm2rdl";
+
+	// API format string
+	QString mapsApiParams = "&z=%1&size=%2,%3&l=map&scale=%4&pt=";
+#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|")
-	                  .arg(zoom)
-	                  .arg(w)
-	                  .arg(h)
-	                  .arg(scale) +
-	              coords + qsl("&sensor=false");
+	const char *mapsApiUrl = "https://maps.googleapis.com/maps/api/staticmap?center=";
+
+	// additional marker params
+	const char *mapsMarkerParams = "&sensor=false";
+	// API format string with basic marker params (red and big)
+	QString mapsApiParams = "&zoom=%1&size=%2,%3&maptype=roadmap&scale=%4&markers=color:red|size:big|";
+#endif
+	QString url = mapsApiUrl + coords + mapsApiParams.arg(zoom).arg(w).arg(h).arg(scale) + coords + mapsMarkerParams;
 	QNetworkReply *reply = manager->get(QNetworkRequest(QUrl(url)));
 	imageLoadings[reply] = data;
 }