tdesktop/Telegram/SourceFiles/core/current_geo_location.cpp

/*
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 "core/current_geo_location.h"

#include "base/platform/base_platform_info.h"
#include "data/raw/raw_countries_bounds.h"
#include "platform/platform_current_geo_location.h"

namespace Core {

GeoLocation ResolveCurrentCountryLocation() {
	const auto iso2 = Platform::SystemCountry().toUpper();
	const auto &bounds = Raw::CountryBounds();
	const auto i = bounds.find(iso2);
	if (i == end(bounds)) {
		return {
			.accuracy = GeoLocationAccuracy::Failed,
		};
	}
	return {
		.point = {
			(i->second.minLat + i->second.maxLat) / 2.,
			(i->second.minLon + i->second.maxLon) / 2.,
		},
		.bounds = {
			i->second.minLat,
			i->second.minLon,
			i->second.maxLat - i->second.minLat,
			i->second.maxLon - i->second.minLon,
		},
		.accuracy = GeoLocationAccuracy::Country,
	};
}

void ResolveCurrentGeoLocation(Fn<void(GeoLocation)> callback) {
	using namespace Platform;
	return ResolveCurrentExactLocation([done = std::move(callback)](
			GeoLocation result) {
		done(result.accuracy != GeoLocationAccuracy::Failed
			? result
			: ResolveCurrentCountryLocation());
	});
}

} // namespace Core