Moved out deserialization of MTP statistical graph to separated file.

Telegram/SourceFiles/api/api_statistics_data_deserialize.cpp

@@ -0,0 +1,35 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "api/api_statistics_data_deserialize.h"
+
+#include "data/data_statistics_chart.h"
+#include "statistics/statistics_data_deserialize.h"
+
+namespace Api {
+
+Data::StatisticalGraph StatisticalGraphFromTL(const MTPStatsGraph &tl) {
+	return tl.match([&](const MTPDstatsGraph &d) {
+		using namespace Statistic;
+		const auto zoomToken = d.vzoom_token().has_value()
+			? qs(*d.vzoom_token()).toUtf8()
+			: QByteArray();
+		return Data::StatisticalGraph{
+			StatisticalChartFromJSON(qs(d.vjson().data().vdata()).toUtf8()),
+			zoomToken,
+		};
+	}, [&](const MTPDstatsGraphAsync &data) {
+		return Data::StatisticalGraph{
+			.zoomToken = qs(data.vtoken()).toUtf8(),
+		};
+	}, [&](const MTPDstatsGraphError &data) {
+		return Data::StatisticalGraph{ .error = qs(data.verror()) };
+	});
+}
+
+
+} // namespace Api