Refactor plugin system (part 5)

app/Services/PluginManager.php

@@ -121,6 +121,7 @@ class PluginManager
         $this->loadVendor($enabled);
         $this->loadViewsAndTranslations($enabled);
         $this->loadBootstrapper($enabled);
+        $this->registerLifecycleHooks();
 
         $this->booted = true;
     }
@@ -195,6 +196,25 @@ class PluginManager
         });
     }
 
+    protected function registerLifecycleHooks()
+    {
+        $this->dispatcher->listen([
+            Events\PluginWasEnabled::class,
+            Events\PluginWasDisabled::class,
+            Events\PluginWasDeleted::class,
+        ], function ($event) {
+            $plugin = $event->plugin;
+            $path = $plugin->getPath().'/callbacks.php';
+            if ($this->filesystem->exists($path)) {
+                $callbacks = $this->filesystem->getRequire($path);
+                $callback = Arr::get($callbacks, get_class($event));
+                if ($callback) {
+                    return $this->app->call($callback, [$plugin]);
+                }
+            }
+        });
+    }
+
     /**
      * @return Collection
      */

tests/ServicesTest/PluginManagerTest.php

@@ -4,6 +4,7 @@ namespace Tests;
 
 use Event;
 use ReflectionClass;
+use App\Services\Plugin;
 use App\Services\PluginManager;
 use Illuminate\Filesystem\Filesystem;
 
@@ -260,6 +261,48 @@ class PluginManagerTest extends TestCase
         option(['plugins_enabled' => '[]']);
     }
 
+    public function testLifecycleHooks()
+    {
+        $this->mock(Filesystem::class, function ($mock) {
+            $mock->shouldReceive('directories')
+                ->with(base_path('plugins'))
+                ->once()
+                ->andReturn(collect(['/mayaka']));
+
+            $mock->shouldReceive('exists')
+                ->with('/mayaka'.DIRECTORY_SEPARATOR.'package.json')
+                ->once()
+                ->andReturn(true);
+
+            $mock->shouldReceive('get')
+                ->with('/mayaka'.DIRECTORY_SEPARATOR.'package.json')
+                ->once()
+                ->andReturn(json_encode([
+                    'name' => 'mayaka',
+                    'version' => '0.0.0',
+                    'namespace' => 'Mayaka',
+                ]));
+
+            $mock->shouldReceive('exists')
+                ->with('/mayaka/callbacks.php')
+                ->once()
+                ->andReturn(true);
+
+            $mock->shouldReceive('getRequire')
+                ->with('/mayaka/callbacks.php')
+                ->once()
+                ->andReturn([
+                    \App\Events\PluginWasDeleted::class => function ($plugin) {
+                        $this->assertInstanceOf(Plugin::class, $plugin);
+                        $this->assertEquals('mayaka', $plugin->name);
+                    },
+                ]);
+        });
+
+        $manager = $this->rebootPluginManager(app('plugins'));
+        event(new \App\Events\PluginWasDeleted(new Plugin('/mayaka', ['name' => 'mayaka'])));
+    }
+
     public function testRegisterAutoload()
     {
         $dir = config('plugins.directory');