User::uploadAvatar

static function uploadAvatar($avatarUrl = '', $hash = '')
{
	if (!$ar = parse_url($avatarUrl))
	{
		return 0;
	}

	if (!preg_match('#.(png|jpg|jpeg|gif|webp)$#i', $ar['path'], $matches))
	{
		return 0;
	}

	$hash = md5($hash. $avatarUrl);

	$orm = BitrixImModelExternalAvatarTable::getList([
		'select' => ['*', 'FILE_EXISTS' => 'FILE.ID'],
		'filter' => ['=LINK_MD5' => $hash]
	]);
	if ($cache = $orm->fetch())
	{
		if ((int)$cache['FILE_EXISTS'] > 0)
		{
			return (int)$cache['AVATAR_ID'];
		}
		else
		{
			BitrixImModelExternalAvatarTable::delete((int)$cache['ID']);
		}
	}

	try
	{
		$tempPath =  CFile::GetTempName('', $hash.'.'.$matches[1]);

		$http = new BitrixMainWebHttpClient();
		$http
			->setTimeout(10)
			->setStreamTimeout(10);

		if (!defined('BOT_CLIENT_URL'))
		{
			$http->setPrivateIp(false);
		}
		if ($http->download($avatarUrl, $tempPath))
		{
			$recordFile = CFile::MakeFileArray($tempPath);
		}
		else
		{
			return 0;
		}
	}
	catch (BitrixMainIOIoException $exception)
	{
		return 0;
	}

	if (!CFile::IsImage($recordFile['name'], $recordFile['type']))
	{
		return 0;
	}

	if (is_array($recordFile) && $recordFile['size'] && $recordFile['size'] > 0 && $recordFile['size'] < 1000000)
	{
		$recordFile = array_merge($recordFile, ['MODULE_ID' => 'imbot']);
	}
	else
	{
		$recordFile = 0;
	}

	if ($recordFile)
	{
		$recordFile = CFile::SaveFile($recordFile, 'botcontroller', true);
	}

	if ((int)$recordFile > 0)
	{
		BitrixImModelExternalAvatarTable::add([
			'LINK_MD5' => $hash,
			'AVATAR_ID' => (int)$recordFile
		]);
	}

	return $recordFile;
}