allow vendord

vendor/kreait/firebase-tokens/src/JWT/GooglePublicKeys.php

@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Kreait\Firebase\JWT;
+
+use Beste\Clock\SystemClock;
+use GuzzleHttp\Client;
+use Kreait\Firebase\JWT\Action\FetchGooglePublicKeys;
+use Kreait\Firebase\JWT\Action\FetchGooglePublicKeys\Handler;
+use Kreait\Firebase\JWT\Action\FetchGooglePublicKeys\WithGuzzle;
+use Kreait\Firebase\JWT\Contract\Expirable;
+use Kreait\Firebase\JWT\Contract\Keys;
+use Psr\Clock\ClockInterface;
+
+final class GooglePublicKeys implements Keys
+{
+    private readonly ClockInterface $clock;
+
+    private readonly Handler $handler;
+
+    private ?Keys $keys = null;
+
+    public function __construct(?Handler $handler = null, ?ClockInterface $clock = null)
+    {
+        $this->clock = $clock ?: SystemClock::create();
+        $this->handler = $handler ?: new WithGuzzle(new Client(['http_errors' => false]), $this->clock);
+    }
+
+    public function all(): array
+    {
+        $keysAreThereButExpired = $this->keys instanceof Expirable && $this->keys->isExpiredAt($this->clock->now());
+
+        if (!$this->keys || $keysAreThereButExpired) {
+            $this->keys = $this->handler->handle(FetchGooglePublicKeys::fromGoogle());
+            // There is a small chance that we get keys that are already expired, but at this point we're happy
+            // that we got keys at all. The next time this method gets called, we will re-fetch.
+        }
+
+        return $this->keys->all();
+    }
+}