Merge pull request #1189 from cachethq/update-system

Update check system

app/GitHub/Release.php

@@ -0,0 +1,70 @@
+<?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\GitHub;
+
+use GuzzleHttp\Client;
+use Illuminate\Contracts\Cache\Repository as CacheRepository;
+use Illuminate\Contracts\Config\Repository as ConfigRepository;
+
+class Release
+{
+    /**
+     * Cache instance.
+     *
+     * @var \Illuminate\Contracts\Cache\Repository
+     */
+    protected $cache;
+
+    /**
+     * Config repository.
+     *
+     * @var \Illuminate\Contracts\Config\Repository
+     */
+    protected $config;
+
+    /**
+     * Creates a new release instance.
+     *
+     * @param \Illuminate\Contracts\Cache\Repository  $cache
+     * @param \Illuminate\Contracts\Config\Repository $config
+     *
+     * @return void
+     */
+    public function __construct(CacheRepository $cache, ConfigRepository $config)
+    {
+        $this->cache = $cache;
+        $this->config = $config;
+    }
+
+    /**
+     * Returns the latest GitHub release.
+     *
+     * @return string
+     */
+    public function latest()
+    {
+        $release = $this->cache->remember('version', 720, function () {
+            $headers = ['Accept' => 'application/vnd.github.v3+json'];
+
+            // We can re-use the Emoji token here, if we have it.
+            if ($token = $this->config->get('services.github.token')) {
+                $headers['OAUTH-TOKEN'] = $token;
+            }
+
+            return json_decode((new Client())->get('https://api.github.com/repos/cachethq/cachet/releases/latest', [
+                'headers' => $headers,
+            ])->getBody(), true);
+        });
+
+        return $release['tag_name'];
+    }
+}

app/Http/Controllers/Dashboard/ApiController.php

@@ -11,6 +11,7 @@
 
 namespace CachetHQ\Cachet\Http\Controllers\Dashboard;
 
+use CachetHQ\Cachet\GitHub\Release;
 use CachetHQ\Cachet\Models\Component;
 use CachetHQ\Cachet\Models\ComponentGroup;
 use CachetHQ\Cachet\Models\IncidentTemplate;
@@ -18,6 +19,7 @@ use Exception;
 use GrahamCampbell\Binput\Facades\Binput;
 use Illuminate\Database\Eloquent\ModelNotFoundException;
 use Illuminate\Routing\Controller;
+use Illuminate\Support\Facades\Response;
 
 class ApiController extends Controller
 {
@@ -89,4 +91,20 @@ class ApiController extends Controller
 
         throw new ModelNotFoundException("Incident template for $templateSlug could not be found.");
     }
+
+    /**
+     * Checks if Cachet is up to date.
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function checkVersion()
+    {
+        $latest = app(Release::class)->latest();
+
+        return Response::json([
+            'cachet_version' => CACHET_VERSION,
+            'latest_version' => $latest,
+            'is_latest'      => version_compare(CACHET_VERSION, $latest) === 1,
+        ]);
+    }
 }

app/Http/Routes/DashboardRoutes.php

@@ -265,6 +265,7 @@ class DashboardRoutes
                 $router->post('components/groups/order', 'ApiController@postUpdateComponentGroupOrder');
                 $router->post('components/order', 'ApiController@postUpdateComponentOrder');
                 $router->post('components/{component}', 'ApiController@postUpdateComponent');
+                $router->get('system/version', 'ApiController@checkVersion');
             });
         });
     }

app/Providers/GitHubServiceProvider.php

@@ -0,0 +1,45 @@
+<?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\Providers;
+
+use CachetHQ\Cachet\GitHub\Release;
+use Illuminate\Support\ServiceProvider;
+
+class GitHubServiceProvider extends ServiceProvider
+{
+    /**
+     * Register the service provider.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        $this->registerRelease();
+    }
+
+    /**
+     * Register the releases class.
+     *
+     * @return void
+     */
+    protected function registerRelease()
+    {
+        $this->app->singleton('cachet.release', function ($app) {
+            $cache = $app['cache.store'];
+            $config = $app['config'];
+
+            return new Release($cache, $config);
+        });
+
+        $this->app->alias('cachet.release', Release::class);
+    }
+}