Tidy up integrations, use contracts

app/Integrations/Contracts/Credits.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Integrations\Contracts;
+
+/**
+ * This is the credits interface.
+ *
+ * @author James Brooks <james@alt-three.com>
+ */
+interface Credits
+{
+    /**
+     * Returns the latest credits.
+     *
+     * @return array|null
+     */
+    public function latest();
+}

app/Integrations/Contracts/Feed.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Integrations\Contracts;
+
+/**
+ * This is the feed interface.
+ *
+ * @author James Brooks <james@alt-three.com>
+ */
+interface Feed
+{
+    /**
+     * Returns the latest entries.
+     *
+     * @return array|null
+     */
+    public function latest();
+}

app/Integrations/Contracts/Releases.php

@@ -0,0 +1,27 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Integrations\Contracts;
+
+/**
+ * This is the releases interface.
+ *
+ * @author James Brooks <james@alt-three.com>
+ */
+interface Releases
+{
+    /**
+     * Returns the latest release.
+     *
+     * @return string
+     */
+    public function latest();
+}

app/Integrations/Core/Credits.php

@@ -9,13 +9,14 @@
  * file that was distributed with this source code.
  */
 
-namespace CachetHQ\Cachet\Integrations;
+namespace CachetHQ\Cachet\Integrations\Core;
 
+use CachetHQ\Cachet\Integrations\Contracts\Credits as CreditsContract;
 use Exception;
 use GuzzleHttp\Client;
 use Illuminate\Contracts\Cache\Repository;
 
-class Credits
+class Credits implements CreditsContract
 {
     /**
      * The default url.

app/Integrations/Core/Feed.php

@@ -9,8 +9,9 @@
  * file that was distributed with this source code.
  */
 
-namespace CachetHQ\Cachet\Integrations;
+namespace CachetHQ\Cachet\Integrations\Core;
 
+use CachetHQ\Cachet\Integrations\Contracts\Feed as FeedContract;
 use Exception;
 use GuzzleHttp\Client;
 use Illuminate\Contracts\Cache\Repository;
@@ -20,7 +21,7 @@ use Illuminate\Contracts\Cache\Repository;
  *
  * @author James Brooks <james@alt-three.com>
  */
-class Feed
+class Feed implements FeedContract
 {
     /**
      * The default url.

app/Integrations/GitHub/Releases.php

@@ -9,12 +9,13 @@
  * file that was distributed with this source code.
  */
 
-namespace CachetHQ\Cachet\Integrations;
+namespace CachetHQ\Cachet\Integrations\GitHub;
 
+use CachetHQ\Cachet\Integrations\Contracts\Releases as ReleasesContract;
 use GuzzleHttp\Client;
 use Illuminate\Contracts\Cache\Repository;
 
-class Releases
+class Releases implements ReleasesContract
 {
     /**
      * The default url.