convert timestamp from episode action request to format also mysql can process

lib/Controller/EpisodeActionController.php

@@ -61,7 +61,7 @@ class EpisodeActionController extends Controller {
 		$episodeActionEntity->setPosition($episodeAction->getPosition());
 		$episodeActionEntity->setStarted($episodeAction->getStarted());
 		$episodeActionEntity->setTotal($episodeAction->getTotal());
-		$episodeActionEntity->setTimestamp($episodeAction->getTimestamp());
+		$episodeActionEntity->setTimestamp($this->convertTimestampToDbDateTimeString($episodeAction->getTimestamp()));
 		$episodeActionEntity->setUserId($this->userId);
 
 		try {
@@ -101,4 +101,15 @@ class EpisodeActionController extends Controller {
 			? (new \DateTime)->setTimestamp($since)
 			: (new \DateTime('-1 week'));
 	}
+
+	/**
+	 * @param string $episodeAction
+	 *
+	 * @return string
+	 */
+	private function convertTimestampToDbDateTimeString(string $timestamp)
+	{
+		return \DateTime::createFromFormat('D F d H:i:s T Y', $timestamp)
+			->format("Y-m-d\TH:i:s");
+	}
 }

tests/Unit/Core/EpisodeAction/EpisodeActionRequestTimestampConversionTest.php

@@ -0,0 +1,16 @@
+<?php
+declare(strict_types=1);
+
+namespace OCA\GPodderSync\Tests\Unit\Core\EpisodeAction;
+
+use Test\TestCase;
+
+class EpisodeActionRequestTimestampConversionTest extends TestCase
+{
+	public function testTimestampConversion()
+	{
+		$episodeActionTimestamp = "Tue May 18 23:45:11 GMT+02:00 2021";
+		$datetime = \DateTime::createFromFormat('D F d H:i:s T Y', $episodeActionTimestamp);
+		$this->assertEquals("2021-05-18T23:45:11", $datetime->format("Y-m-d\TH:i:s"));
+	}
+}