feat: cli command to un-/register MailJet webhook url

src/Service/MailjetApiClient.php

@@ -119,6 +119,28 @@ class MailjetApiClient
         }
     }
 
+    /**
+     * @return array<string, mixed>
+     */
+    public function createEventCallbackUrl(string $eventType, string $url, int $version = 2, bool $isBackup = false): array
+    {
+        return $this->request('POST', 'eventcallbackurl', [
+            'json' => [
+                'EventType' => strtolower(trim($eventType)),
+                'Url' => $url,
+                'Version' => $version,
+                'isBackup' => $isBackup,
+            ],
+        ]);
+    }
+
+    public function deleteEventCallbackUrl(int $eventCallbackUrlId): void
+    {
+        $this->request('DELETE', sprintf('eventcallbackurl/%d', $eventCallbackUrlId), [
+            'allow_empty' => true,
+        ]);
+    }
+
     private function findOrCreateContactId(string $email): int
     {
         $contactId = $this->resolveContactId($email);
@@ -223,7 +245,9 @@ class MailjetApiClient
     private function request(string $method, string $resource, array $options = []): array
     {
         $allow404 = true === ($options['allow_404'] ?? false);
+        $allowEmpty = true === ($options['allow_empty'] ?? false);
         unset($options['allow_404']);
+        unset($options['allow_empty']);
 
         $resourcePath = trim($resource, '/');
 
@@ -241,7 +265,21 @@ class MailjetApiClient
                 return [];
             }
 
-            $payload = $response->toArray(false);
+            $content = $response->getContent(false);
+            if ('' === trim($content)) {
+                if (true === $allowEmpty && $statusCode < 400) {
+                    return [];
+                }
+
+                throw new NewsletterProviderException(sprintf('Mailjet request returned an empty response for resource %s', $resource));
+            }
+
+            try {
+                $payload = json_decode($content, true, 512, JSON_THROW_ON_ERROR);
+            } catch (\JsonException $exception) {
+                throw new NewsletterProviderException(sprintf('Mailjet request error for resource %s', $resource), previous: $exception);
+            }
+
             if ($statusCode >= 400) {
                 $payloadSummary = json_encode($payload, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
                 $payloadSummary = false === $payloadSummary ? null : $payloadSummary;