From 53d48d6f294e2a5971667b2882c58ccfc673c68f Mon Sep 17 00:00:00 2001
From: Salvatore Martire <4652631+salmart-dev@users.noreply.github.com>
Date: Thu, 23 Apr 2026 10:50:18 +0200
Subject: [PATCH] fix: track time spent in recursive markOrRun calls

Signed-off-by: Salvatore Martire <4652631+salmart-dev@users.noreply.github.com>
---
 .../lib/Listener/SharesUpdatedListener.php    | 15 ++++----
 .../tests/SharesUpdatedListenerTest.php       | 34 ++++++++++++++++++-
 2 files changed, 42 insertions(+), 7 deletions(-)

diff --git a/apps/files_sharing/lib/Listener/SharesUpdatedListener.php b/apps/files_sharing/lib/Listener/SharesUpdatedListener.php
index 5f1ece48b9999..800e223c8e9b3 100644
--- a/apps/files_sharing/lib/Listener/SharesUpdatedListener.php
+++ b/apps/files_sharing/lib/Listener/SharesUpdatedListener.php
@@ -43,9 +43,11 @@ class SharesUpdatedListener implements IEventListener {
 	private float $cutOffMarkTime;
 
 	/**
-	 * The total amount of time we've spent so far processing updates
+	 * Timestamp marking the first time this listener was triggered, used to
+	 * determine if we should update the share date immediately or just mark the
+	 * users for refresh.
 	 */
-	private float $updatedTime = 0.0;
+	private ?float $firstRun = null;
 
 	public function __construct(
 		private readonly IManager $shareManager,
@@ -128,14 +130,15 @@ public function handle(Event $event): void {
 	}
 
 	private function markOrRun(IUser $user, callable $callback): void {
-		$start = floatval($this->clock->now()->format('U.u'));
-		if ($this->cutOffMarkTime === -1.0 || $this->updatedTime < $this->cutOffMarkTime) {
+		$now = (float)$this->clock->now()->format('U.u');
+		$this->firstRun ??= $now;
+		$elapsed = $now - $this->firstRun;
+
+		if ($this->cutOffMarkTime === -1.0 || $elapsed < $this->cutOffMarkTime) {
 			$callback();
 		} else {
 			$this->markUserForRefresh($user);
 		}
-		$end = floatval($this->clock->now()->format('U.u'));
-		$this->updatedTime += $end - $start;
 	}
 
 	private function updateOrMarkUser(IUser $user): void {
diff --git a/apps/files_sharing/tests/SharesUpdatedListenerTest.php b/apps/files_sharing/tests/SharesUpdatedListenerTest.php
index ec27bfdb08b75..74347e3382d69 100644
--- a/apps/files_sharing/tests/SharesUpdatedListenerTest.php
+++ b/apps/files_sharing/tests/SharesUpdatedListenerTest.php
@@ -39,6 +39,8 @@ class SharesUpdatedListenerTest extends \Test\TestCase {
 	private LoggerInterface&MockObject $logger;
 	private $clockFn;
 
+	private int $time = 0;
+
 	protected function setUp(): void {
 		parent::setUp();
 
@@ -50,7 +52,7 @@ protected function setUp(): void {
 		$this->userConfig = new MockUserConfig();
 		$this->clock = $this->createMock(ClockInterface::class);
 		$this->clockFn = function () {
-			return new \DateTimeImmutable('@0');
+			return new \DateTimeImmutable("@{$this->time}");
 		};
 		$this->clock->method('now')
 			->willReturnCallback(function () {
@@ -161,6 +163,36 @@ public static function shareMarkAfterTimeProvider(): array {
 		];
 	}
 
+	public function testCutoffSpansMultipleHandleInvocations(): void {
+		$share = $this->createMock(IShare::class);
+		$user1 = $this->createUser('user1', '');
+
+		$this->manager->method('getUsersForShare')
+			->willReturn([$user1]);
+
+		$event = new ShareCreatedEvent($share);
+		$this->sharesUpdatedListener->setCutOffMarkTime(4);
+
+		// First handle at t=0: firstRun=0, elapsed=0 < 0.5 → callback runs
+		$this->shareRecipientUpdater
+			->expects($this->exactly(2))
+			->method('updateForAddedShare');
+
+		$this->assertFalse(
+			$this->userConfig->getValueBool($user1->getUID(), 'files_sharing', ConfigLexicon::USER_NEEDS_SHARE_REFRESH)
+		);
+
+		$this->sharesUpdatedListener->handle($event);
+		$this->time = 1;
+		$this->sharesUpdatedListener->handle($event);
+		$this->time = 4;
+		$this->sharesUpdatedListener->handle($event);
+
+		$this->assertTrue(
+			$this->userConfig->getValueBool($user1->getUID(), 'files_sharing', ConfigLexicon::USER_NEEDS_SHARE_REFRESH)
+		);
+	}
+
 	#[DataProvider('shareMarkAfterTimeProvider')]
 	public function testShareMarkAfterTime(float $cutOff, int $expectedCount) {
 		$share = $this->createMock(IShare::class);