fix(share): Set expiration time to end of day (23:59:59)

Shares now expire at the end of the selected day instead of the
beginning, allowing access throughout the entire expiration day.

Also return actual stored time in API response instead of hardcoded
00:00:00 to prevent timezone-related display issues in the UI.

Signed-off-by: nfebe <fenn25.fn@gmail.com>

Author: nfebe

apps/files_sharing/lib/Controller/ShareAPIController.php

@@ -234,7 +234,7 @@ protected function formatShare(IShare $share, ?Node $recipientNode = null): arra
 		$expiration = $share->getExpirationDate();
 		if ($expiration !== null) {
 			$expiration->setTimezone($this->dateTimeZone->getTimeZone());
-			$result['expiration'] = $expiration->format('Y-m-d 00:00:00');
+			$result['expiration'] = $expiration->format('Y-m-d H:i:s');
 		}
 
 		if ($share->getShareType() === IShare::TYPE_USER) {

lib/private/Share20/Manager.php

@@ -300,7 +300,7 @@ protected function validateExpirationDateInternal(IShare $share) {
 		if (!$share->getNoExpirationDate() || $isEnforced) {
 			if ($expirationDate !== null) {
 				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
-				$expirationDate->setTime(0, 0, 0);
+				$expirationDate->setTime(23, 59, 59);
 
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$date->setTime(0, 0, 0);
@@ -319,7 +319,7 @@ protected function validateExpirationDateInternal(IShare $share) {
 
 			if ($fullId === null && $expirationDate === null && $defaultExpireDate) {
 				$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-				$expirationDate->setTime(0, 0, 0);
+				$expirationDate->setTime(23, 59, 59);
 				$days = (int)$this->config->getAppValue('core', $configProp, (string)$defaultExpireDays);
 				if ($days > $defaultExpireDays) {
 					$days = $defaultExpireDays;
@@ -334,7 +334,7 @@ protected function validateExpirationDateInternal(IShare $share) {
 				}
 
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-				$date->setTime(0, 0, 0);
+				$date->setTime(23, 59, 59);
 				$date->add(new \DateInterval('P' . $defaultExpireDays . 'D'));
 				if ($date < $expirationDate) {
 					throw new GenericShareException($this->l->n('Cannot set expiration date more than %n day in the future', 'Cannot set expiration date more than %n days in the future', $defaultExpireDays), code: 404);
@@ -378,7 +378,7 @@ protected function validateExpirationDateLink(IShare $share) {
 		if (!($share->getNoExpirationDate() && !$isEnforced)) {
 			if ($expirationDate !== null) {
 				$expirationDate->setTimezone($this->dateTimeZone->getTimeZone());
-				$expirationDate->setTime(0, 0, 0);
+				$expirationDate->setTime(23, 59, 59);
 
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
 				$date->setTime(0, 0, 0);
@@ -397,7 +397,7 @@ protected function validateExpirationDateLink(IShare $share) {
 
 			if ($fullId === null && $expirationDate === null && $this->shareApiLinkDefaultExpireDate()) {
 				$expirationDate = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-				$expirationDate->setTime(0, 0, 0);
+				$expirationDate->setTime(23, 59, 59);
 
 				$days = (int)$this->config->getAppValue('core', 'link_defaultExpDays', (string)$this->shareApiLinkDefaultExpireDays());
 				if ($days > $this->shareApiLinkDefaultExpireDays()) {
@@ -413,7 +413,7 @@ protected function validateExpirationDateLink(IShare $share) {
 				}
 
 				$date = new \DateTime('now', $this->dateTimeZone->getTimeZone());
-				$date->setTime(0, 0, 0);
+				$date->setTime(23, 59, 59);
 				$date->add(new \DateInterval('P' . $this->shareApiLinkDefaultExpireDays() . 'D'));
 				if ($date < $expirationDate) {
 					throw new GenericShareException(