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@@ -0,0 +1,72 @@
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+<?php
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+
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+declare(strict_types=1);
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+/**
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+ *
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+ * @copyright Copyright (c) 2023 Joas Schilling <coding@schilljs.com>
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+ *
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+ * @author Joas Schilling <coding@schilljs.com>
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+ *
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+ * @license GNU AGPL version 3 or any later version
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+ *
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+ * This program is free software: you can redistribute it and/or modify
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+ * it under the terms of the GNU Affero General Public License as
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+ * published by the Free Software Foundation, either version 3 of the
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+ * License, or (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU Affero General Public License for more details.
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+ *
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+ * You should have received a copy of the GNU Affero General Public License
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+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
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+ *
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+ */
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+
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+namespace OC;
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+
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+use libphonenumber\NumberParseException;
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+use libphonenumber\PhoneNumberFormat;
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+use OCP\IPhoneNumberUtil;
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+
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+/**
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+ * @since 28.0.0
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+ */
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+class PhoneNumberUtil implements IPhoneNumberUtil {
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+ /**
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+ * Returns the country code for a specific region
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+ *
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+ * For example, this would be `41` for Switzerland and `49` for Germany.
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+ * Returns null when the region is invalid.
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+ *
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+ * @since 28.0.0
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+ */
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+ public function getCountryCodeForRegion(string $regionCode): ?int {
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+ $phoneUtil = \libphonenumber\PhoneNumberUtil::getInstance();
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+ $countryCode = $phoneUtil->getCountryCodeForRegion($regionCode);
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+ return $countryCode === 0 ? null : $countryCode;
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+ }
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+
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+ /**
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+ * Converts a given input into an E164 formatted phone number
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+ *
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+ * E164 is the international format without any formatting characters or spaces.
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+ * E.g. +41446681800 where +41 is the region code.
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+ * Returns null when the input is invalid for the given region.
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+ *
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+ * @since 28.0.0
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+ */
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+ public function convertToStandardFormat(string $input, ?string $defaultRegion = null): ?string {
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+ $phoneUtil = \libphonenumber\PhoneNumberUtil::getInstance();
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+ try {
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+ $phoneNumber = $phoneUtil->parse($input, $defaultRegion);
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+ if ($phoneUtil->isValidNumber($phoneNumber)) {
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+ return $phoneUtil->format($phoneNumber, PhoneNumberFormat::E164);
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+ }
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+ } catch (NumberParseException) {
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+ }
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+
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+ return null;
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+ }
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+}
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Joas Schilling