delete conflicting episode action if current episode actions updates to same episode url

lib/Core/EpisodeAction/EpisodeActionSaver.php

@@ -69,7 +69,17 @@ class EpisodeActionSaver
 
         $this->ensureGuidDoesNotGetNulledWithOldData($episodeActionToUpdate, $episodeActionEntity);
 
+        try {
             return $this->episodeActionWriter->update($episodeActionEntity);
+        } catch (UniqueConstraintViolationException $uniqueConstraintViolationException) {
+            $this->deleteConflictingEpisodeAction($episodeActionEntity, $userId);
+        } catch (Exception $exception) {
+            if ($exception->getReason() === Exception::REASON_UNIQUE_CONSTRAINT_VIOLATION) {
+                $this->deleteConflictingEpisodeAction($episodeActionEntity, $userId);
+            }
+        }
+        return $this->episodeActionWriter->update($episodeActionEntity);
+
     }
 
     private function ensureGuidDoesNotGetNulledWithOldData(EpisodeAction $episodeActionToUpdate, EpisodeActionEntity $episodeActionEntity): void
@@ -115,4 +125,17 @@ class EpisodeActionSaver
 
         return $episodeAction;
     }
+
+    /**
+     * @param EpisodeActionEntity $episodeActionEntity
+     * @param string $userId
+     * @return void
+     */
+    private function deleteConflictingEpisodeAction(EpisodeActionEntity $episodeActionEntity, string $userId): void
+    {
+        $collidingEpisodeActionId = $this->episodeActionRepository->findByEpisodeUrl($episodeActionEntity->getGuid(), $userId)->getId();
+        if ($collidingEpisodeActionId !== $episodeActionEntity->getId()) {
+            $this->episodeActionRepository->deleteEpisodeActionByEpisodeUrl($episodeActionEntity->getGuid(), $userId);
+        }
+    }
 }

lib/Db/EpisodeAction/EpisodeActionRepository.php

@@ -52,6 +52,11 @@ class EpisodeActionRepository {
         );
     }
 
+    public function deleteEpisodeActionByEpisodeUrl(string $episodeUrl, string $userId) : void {
+        $episodeAction = $this->episodeActionMapper->findByEpisodeUrl($episodeUrl, $userId);
+        $this->episodeActionMapper->delete($episodeAction);
+    }
+
 	private function mapEntityToEpisodeAction(EpisodeActionEntity $episodeActionEntity): EpisodeAction
 	{
 		return new EpisodeAction(

tests/Integration/EpisodeActionSaverGuidBackwardCompatibilityTest.php

@@ -18,7 +18,8 @@ class EpisodeActionSaverGuidBackwardCompatibilityTest extends TestCase
 
     private \OCP\AppFramework\IAppContainer $container;
 
-	public function setUp(): void {
+    public function setUp(): void
+    {
         parent::setUp();
         $app = new App('gpoddersync');
         $this->container = $app->getContainer();
@@ -78,19 +79,15 @@ class EpisodeActionSaverGuidBackwardCompatibilityTest extends TestCase
         $episodeActionRepository = $this->container->get(EpisodeActionRepository::class);
         $this->assertSame(100, $episodeActionRepository->findByGuid($urlWithParameter, self::USER_ID_0)->getPosition());
 
-        try {
         //act
         $episodeActionSaver->saveEpisodeActions(
             [["podcast" => $podcastUrl, "episode" => $urlWithParameter, "guid" => $urlWithParameter, "action" => "PLAY", "timestamp" => "2021-08-22T23:58:56", "started" => 35, "position" => 100, "total" => 2252]],
             self::USER_ID_0
         )[0];
 
-            $this->assertSame(1,2);
+        //assert
-
+        /** @var EpisodeActionRepository $episodeActionRepository */
-        } catch (\Exception $exception) {
+        $episodeActionRepository = $this->container->get(EpisodeActionRepository::class);
-            $this->assertStringContainsString("SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry", $exception->getMessage());
+        $this->assertSame(100, $episodeActionRepository->findByGuid($urlWithParameter, self::USER_ID_0)->getPosition());
-            $this->assertStringContainsString("for key 'gpodder_episode_user_id'", $exception->getMessage());
-        }
-
     }
 }