first commit

common/Settings/Validators/GoogleLoginValidator.php

@@ -0,0 +1,85 @@
+<?php
+
+namespace Common\Settings\Validators;
+
+use Common\Auth\Oauth;
+use Common\Core\HttpClient;
+use Config;
+use GuzzleHttp\Exception\ClientException;
+use Illuminate\Support\Arr;
+use Socialite;
+
+class GoogleLoginValidator implements SettingsValidator
+{
+    const KEYS = ['google_id', 'google_secret'];
+
+    /**
+     * @var Oauth
+     */
+    private $oauth;
+
+    /**
+     * @var HttpClient
+     */
+    private $httpClient;
+
+    public function __construct(Oauth $oauth)
+    {
+        $this->oauth = $oauth;
+        $this->httpClient = new HttpClient([
+            'exceptions' => true,
+        ]);
+    }
+
+    public function fails($values)
+    {
+        $this->setConfigDynamically($values);
+
+        try {
+            Socialite::driver('google')->getAccessTokenResponse('foo-bar');
+        } catch (ClientException $e) {
+            return $this->getErrorMessage($e);
+        }
+    }
+
+    private function setConfigDynamically($settings)
+    {
+        if ($googleId = Arr::get($settings, 'google_id')) {
+            Config::set('services.google.client_id', $googleId);
+        }
+
+        if ($googleSecret = Arr::get($settings, 'google_secret')) {
+            Config::set('services.google.client_secret', $googleSecret);
+        }
+    }
+
+    /**
+     * @param ClientException $e
+     * @return array
+     */
+    private function getErrorMessage(ClientException $e)
+    {
+        $errResponse = json_decode(
+            $e
+                ->getResponse()
+                ->getBody()
+                ->getContents(),
+            true,
+        );
+
+        // there were no credentials related errors, we can assume validation was successful
+        if (
+            Arr::get($errResponse, 'error_description') ===
+            'Malformed auth code.'
+        ) {
+            return null;
+        }
+
+        $msg1 = Arr::get($errResponse, 'error.errors.0.message', '');
+        $msg2 = Arr::get($errResponse, 'error_description', '');
+        $message = strtolower($msg1 ?: $msg2);
+        return [
+            'google_group' => "Could not validate these credentials: $message",
+        ];
+    }
+}