1 files changed, 91 insertions, 0 deletions
diff --git a/lib/private/Contacts/ContactsMenu/Providers/LocalTimeProvider.php b/lib/private/Contacts/ContactsMenu/Providers/LocalTimeProvider.php
new file mode 100644
index 00000000000..f62e989fd64
--- /dev/null
+++ b/lib/private/Contacts/ContactsMenu/Providers/LocalTimeProvider.php
@@ -0,0 +1,91 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OC\Contacts\ContactsMenu\Providers;
+
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\Contacts\ContactsMenu\IActionFactory;
+use OCP\Contacts\ContactsMenu\IEntry;
+use OCP\Contacts\ContactsMenu\IProvider;
+use OCP\IConfig;
+use OCP\IDateTimeFormatter;
+use OCP\IURLGenerator;
+use OCP\IUserManager;
+use OCP\IUserSession;
+use OCP\L10N\IFactory as IL10NFactory;
+
+class LocalTimeProvider implements IProvider {
+	public function __construct(
+		private IActionFactory $actionFactory,
+		private IL10NFactory $l10nFactory,
+		private IURLGenerator $urlGenerator,
+		private IUserManager $userManager,
+		private ITimeFactory $timeFactory,
+		private IDateTimeFormatter $dateTimeFormatter,
+		private IConfig $config,
+		private IUserSession $currentSession,
+	) {
+	}
+
+	public function process(IEntry $entry): void {
+		$targetUserId = $entry->getProperty('UID');
+		$targetUser = $this->userManager->get($targetUserId);
+		if (!empty($targetUser)) {
+			$timezoneStringTarget = $this->config->getUserValue($targetUser->getUID(), 'core', 'timezone') ?: $this->config->getSystemValueString('default_timezone', 'UTC');
+			$timezoneTarget = new \DateTimeZone($timezoneStringTarget);
+			$localTimeTarget = $this->timeFactory->getDateTime('now', $timezoneTarget);
+			$localTimeString = $this->dateTimeFormatter->formatTime($localTimeTarget, 'short', $timezoneTarget);
+
+			$l = $this->l10nFactory->get('lib');
+			$currentUser = $this->currentSession->getUser();
+			if ($currentUser !== null) {
+				$timezoneStringCurrent = $this->config->getUserValue($currentUser->getUID(), 'core', 'timezone') ?: $this->config->getSystemValueString('default_timezone', 'UTC');
+				$timezoneCurrent = new \DateTimeZone($timezoneStringCurrent);
+				$localTimeCurrent = $this->timeFactory->getDateTime('now', $timezoneCurrent);
+
+				// Get the timezone offsets to GMT on this very time (needed to handle daylight saving time)
+				$timeOffsetCurrent = $timezoneCurrent->getOffset($localTimeCurrent);
+				$timeOffsetTarget = $timezoneTarget->getOffset($localTimeTarget);
+				// Get the difference between the current users offset to GMT and then targets user to GMT
+				$timeOffset = $timeOffsetTarget - $timeOffsetCurrent;
+				if ($timeOffset === 0) {
+					// No offset means both users are in the same timezone
+					$timeOffsetString = $l->t('same time');
+				} else {
+					// We need to cheat here as the offset could be up to 26h we can not use formatTime.
+					$hours = abs((int)($timeOffset / 3600));
+					$minutes = abs(($timeOffset / 60) % 60);
+					// TRANSLATORS %n hours in a short form
+					$hoursString = $l->n('%nh', '%nh', $hours);
+					// TRANSLATORS %n minutes in a short form
+					$minutesString = $l->n('%nm', '%nm', $minutes);
+
+					$timeOffsetString = ($hours > 0 ? $hoursString : '') . ($minutes > 0 ? $minutesString : '');
+
+					if ($timeOffset > 0) {
+						// TRANSLATORS meaning the user is %s time ahead - like 1h30m
+						$timeOffsetString = $l->t('%s ahead', [$timeOffsetString]);
+					} else {
+						// TRANSLATORS meaning the user is %s time behind - like 1h30m
+						$timeOffsetString = $l->t('%s behind', [$timeOffsetString]);
+					}
+				}
+				$profileActionText = "{$localTimeString} • {$timeOffsetString}";
+			} else {
+				$profileActionText = $l->t('Local time: %s', [$localTimeString]);
+			}
+
+			$iconUrl = $this->urlGenerator->getAbsoluteURL($this->urlGenerator->imagePath('core', 'actions/recent.svg'));
+			$action = $this->actionFactory->newLinkAction($iconUrl, $profileActionText, '#', 'timezone');
+			// Order after the profile page
+			$action->setPriority(19);
+			$entry->addAction($action);
+		}
+	}
+}