├── services.php
├── .gitignore
├── composer.json
├── src
    ├── Controller
    │   └── HelloWorld.php
    ├── EventHandler
    │   └── AllTheListeners.php
    └── Command
    │   └── ListStations.php
├── templates
    └── hello_world.phtml
├── events.php
├── README.md
└── LICENSE


/services.php:
--------------------------------------------------------------------------------
1 | <?php
2 | 
3 | declare(strict_types=1);
4 | 
5 | return [
6 |     // Add your own Dependency Injector services here
7 | ];
8 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | # Node Modules
 2 | node_modules
 3 | 
 4 | # Junk/cache files.
 5 | *Thumbs.db
 6 | tmp/cache/*---*
 7 | *.DS_Store
 8 | *.apdisk
 9 | .vagrant
10 | .idea
11 | 
12 | # Composer-generated content
13 | /vendor/


--------------------------------------------------------------------------------
/composer.json:
--------------------------------------------------------------------------------
 1 | {
 2 |     "name": "azuracast/example-plugin",
 3 |     "description": "An example AzuraCast plugin, demonstrating the capabilities and common use-cases of the plugin system.",
 4 |     "type": "azuracast-plugin",
 5 |     "authors": [
 6 |         {
 7 |             "name": "Buster Neece",
 8 |             "email": "buster@busterneece.com"
 9 |         }
10 |     ],
11 |     "autoload": {
12 |         "psr-4": {
13 |             "Plugin\\ExamplePlugin\\": "src"
14 |         }
15 |     },
16 |     "require": {}
17 | }
18 | 


--------------------------------------------------------------------------------
/src/Controller/HelloWorld.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace Plugin\ExamplePlugin\Controller;
 6 | 
 7 | use App\Controller\SingleActionInterface;
 8 | use App\Http\Response;
 9 | use App\Http\ServerRequest;
10 | use Psr\Http\Message\ResponseInterface;
11 | 
12 | final class HelloWorld implements SingleActionInterface
13 | {
14 |     public function __invoke(ServerRequest $request, Response $response, array $params): ResponseInterface
15 |     {
16 |         return $request->getView()
17 |             ->renderToResponse($response, 'example::hello_world');
18 |     }
19 | }
20 | 


--------------------------------------------------------------------------------
/templates/hello_world.phtml:
--------------------------------------------------------------------------------
 1 | <?php $this->layout('minimal', ['title' => __('Hello World!'), 'page_class' => 'example-content']) ?>
 2 | 
 3 | <section id="main">
 4 |     <div class="container">
 5 |         <div class="card mb-3" role="region">
 6 |             <div class="card-header bg-primary-dark">
 7 |                 <h3 class="card-title">Hello World!</h3>
 8 |             </div>
 9 | 
10 |             <div class="card-body">
11 |                 This is an example page.
12 |             </div>
13 | 
14 |             <div class="card-footer">
15 |                 <a href="javascript:history.back()"><i class="material-icons" aria-hidden="true">arrow_back</i></a>
16 |                 <a href="<?=$router->named('home') ?>"><i class="material-icons" aria-hidden="true">home</i></a>
17 |             </div>
18 |         </div>
19 |     </div>
20 | </section>
21 | 


--------------------------------------------------------------------------------
/events.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | use App\CallableEventDispatcherInterface;
 6 | use App\Event;
 7 | 
 8 | return static function (CallableEventDispatcherInterface $dispatcher) {
 9 |     $dispatcher->addListener(
10 |         Event\BuildConsoleCommands::class,
11 |         function (Event\BuildConsoleCommands $event) use ($dispatcher) {
12 |             $event->addAliases([
13 |                 'example:list-stations' => Plugin\ExamplePlugin\Command\ListStations::class,
14 |             ]);
15 |         }
16 |     );
17 | 
18 |     // Tell the view handler to look for templates in this directory too
19 |     $dispatcher->addListener(Event\BuildView::class, function(Event\BuildView $event) {
20 |         $event->getView()->addFolder('example', __DIR__.'/templates');
21 |     });
22 | 
23 |     // Add a new route handled exclusively by the plugin.
24 |     $dispatcher->addListener(Event\BuildRoutes::class, function(Event\BuildRoutes $event) {
25 |         $app = $event->getApp();
26 | 
27 |         $app->get('/example', \Plugin\ExamplePlugin\Controller\HelloWorld::class)
28 |             ->setName('example-plugin:index:index')
29 |             ->add(\App\Middleware\EnableView::class);
30 |     });
31 | 
32 |     // You can also add classes that implement the EventSubscriberInterface
33 |     $dispatcher->addSubscriber(new \Plugin\ExamplePlugin\EventHandler\AllTheListeners);
34 | };
35 | 


--------------------------------------------------------------------------------
/src/EventHandler/AllTheListeners.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace Plugin\ExamplePlugin\EventHandler;
 6 | 
 7 | use App\Event;
 8 | use NowPlaying\Result\Result;
 9 | use Symfony\Component\EventDispatcher\EventSubscriberInterface;
10 | 
11 | class AllTheListeners implements EventSubscriberInterface
12 | {
13 |     /**
14 |      * Returns an array of event names this subscriber wants to listen to.
15 |      *
16 |      * The array keys are event names and the value can be:
17 |      *
18 |      *  * The method name to call (priority defaults to 0)
19 |      *  * An array composed of the method name to call and the priority
20 |      *  * An array of arrays composed of the method names to call and respective
21 |      *    priorities, or 0 if unset
22 |      *
23 |      * For instance:
24 |      *
25 |      *  * array('eventName' => 'methodName')
26 |      *  * array('eventName' => array('methodName', $priority))
27 |      *  * array('eventName' => array(array('methodName1', $priority), array('methodName2')))
28 |      *
29 |      * @return array The event names to listen to
30 |      */
31 |     public static function getSubscribedEvents()
32 |     {
33 |         return [
34 |             Event\Radio\GenerateRawNowPlaying::class => [
35 |                 ['setListenerCount', -20]
36 |             ],
37 |         ];
38 |     }
39 | 
40 |     public function setListenerCount(Event\Radio\GenerateRawNowPlaying $event)
41 |     {
42 |         $np_raw = $event->getResult()->toArray();
43 | 
44 |         $np_raw['listeners']['current'] = mt_rand(5, 25);
45 |         $np_raw['listeners']['unique'] = mt_rand(0, $np_raw['listeners']['current']);
46 |         $np_raw['listeners']['total'] = $np_raw['listeners']['current'];
47 | 
48 |         $event->setResult(Result::fromArray($np_raw));
49 |     }
50 | }
51 | 


--------------------------------------------------------------------------------
/src/Command/ListStations.php:
--------------------------------------------------------------------------------
 1 | <?php
 2 | 
 3 | declare(strict_types=1);
 4 | 
 5 | namespace Plugin\ExamplePlugin\Command;
 6 | 
 7 | use App\Console\Command\CommandAbstract;
 8 | use App\Container\EntityManagerAwareTrait;
 9 | use App\Entity\Station;
10 | use App\Radio\Adapters;
11 | use Symfony\Component\Console\Attribute\AsCommand;
12 | use Symfony\Component\Console\Input\InputInterface;
13 | use Symfony\Component\Console\Output\OutputInterface;
14 | use Symfony\Component\Console\Style\SymfonyStyle;
15 | 
16 | #[AsCommand(
17 |     name: 'example:list-stations',
18 |     description: 'An example function to list stations in a table view.',
19 | )]
20 | final class ListStations extends CommandAbstract
21 | {
22 |     use EntityManagerAwareTrait;
23 | 
24 |     public function __construct(
25 |         private readonly Adapters $adapters
26 |     ) {
27 |         parent::__construct();
28 |     }
29 | 
30 |     protected function execute(InputInterface $input, OutputInterface $output): int
31 |     {
32 |         $io = new SymfonyStyle($input, $output);
33 |         $io->title('Example Plugin: Stations');
34 | 
35 |         $headers = [
36 |             'ID',
37 |             'Name',
38 |             'Frontend',
39 |             'Backend',
40 |             'Remotes',
41 |         ];
42 | 
43 |         $rows = [];
44 | 
45 |         $stations = $this->em->getRepository(Station::class)->findAll();
46 | 
47 |         /** @var Station $station */
48 |         foreach($stations as $station) {
49 |             $backend = $this->adapters->getBackendAdapter($station);
50 |             $frontend = $this->adapters->getFrontendAdapter($station);
51 | 
52 |             $rows[] = [
53 |                 $station->getId(),
54 |                 $station->getName(),
55 |                 $station->getBackendType()
56 |                     ->getName() . ' (' . ($backend->isRunning($station) ? 'Running' : 'Stopped') . ')',
57 |                 $station->getFrontendType()
58 |                     ->getName() . ' (' . ($frontend->isRunning($station) ? 'Running' : 'Stopped') . ')',
59 |                 $station->getRemotes()->count(),
60 |             ];
61 |         }
62 | 
63 |         $io->table($headers, $rows);
64 | 
65 |         return 0;
66 |     }
67 | }
68 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
  1 | # Extending AzuraCast with Plugins
  2 | 
  3 | This repository contains documentation for the AzuraCast plugin system, as well as a working example of some of the more
  4 | common modifications that might be made to the AzuraCast system via plugins.
  5 | 
  6 | More information on plugins is available via
  7 | the [AzuraCast Documentation](https://www.azuracast.com/docs/developers/plugins/).
  8 | 
  9 | ## Including Plugins
 10 | 
 11 | Plugins are automatically discovered if they're located in the `/plugins` directory relative to the main AzuraCast
 12 | installation. Plugins are ignored by the parent AzuraCast instance, so you can update your instance any time you like
 13 | without worrying about your plugins being removed.
 14 | 
 15 | ### Docker Installations
 16 | 
 17 | You can clone the plugin directory anywhere you want on the host machine, though it's recommended to have it as a
 18 | subdirectory of your AzuraCast install directory (like `/var/azuracast`). To mount the plugin as a volume so Docker
 19 | recognizes it, you should create a new file named `docker-compose.override.yml` alongside the
 20 | existing `docker-compose.yml` file. If you already have such a file, you can update it to include the extra lines.
 21 | 
 22 | ```yaml
 23 | services:
 24 |   web:
 25 |     environment:
 26 |       AZURACAST_PLUGIN_MODE: true
 27 |     volumes:
 28 |       - ./path_to_plugin:/var/azuracast/www/plugins/example-plugin
 29 | ```
 30 | 
 31 | Make sure to restart the Docker containers afterward (using `./docker.sh restart`).
 32 | 
 33 | ## Naming Convention
 34 | 
 35 | ### Autoloaded Files
 36 | 
 37 | The following files are automatically loaded along with the relevant section of code:
 38 | 
 39 |  - `/services.php`: Register or extend services with the application's Dependency Injection (DI) container.
 40 |  - `/events.php`: Register listeners for the Event Dispatcher.
 41 | 
 42 | ### Classes
 43 | 
 44 | AzuraCast autoloads PHP files inside `/plugins/(plugin_name)/src` as long as they are in the appropriate namespace.
 45 | 
 46 | The function used to convert from the plugin folder name into the PHP class name is:
 47 | 
 48 | ```php
 49 | <?php
 50 | return str_replace([' ', '_', '-'], '', ucwords($word, ' _-'));
 51 | ```
 52 | 
 53 | For example, `/plugins/example-plugin/src` will autoload classes in the `\Plugin\ExamplePlugin` namespace.
 54 | 
 55 | ## The Event Dispatcher
 56 | 
 57 | Most of the extensibility of plugins comes from events that use the EventDispatcher in AzuraCast. Both classes from inside AzuraCast and plugins are registered as "listeners" to common events that are dispatched by the system, so you can override or modify the core application's responses simply by adding your own listeners in the right order.
 58 | 
 59 | See the [`events.php`](https://github.com/AzuraCast/example-plugin/blob/main/events.php) file included in this sample
 60 | repository for an example of common events to listen to.
 61 | 
 62 | As you can see, each event listener that you register has to provide the event that it listens to as a callable to the `addListener` method's first parameter, and each event listener receives an instance of that event class complete with relevant metadata already attached. Listeners also have a priority (the last argument in the function call); this number can be positive or negative, with the default handler tending to be around zero. Higher numbers are dispatched before lower numbers.
 63 | 
 64 | Below is a listing of the events that can be overridden by plugins:
 65 | 
 66 | ### General Events
 67 | 
 68 | - [`\App\Event\BuildConsoleCommands`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/BuildConsoleCommands.php):
 69 |   Register commands that will be available for invocation via the command-line interface (CLI).
 70 | - [`\App\Event\BuildRoutes`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/BuildRoutes.php): Add URL
 71 |   routes that will direct to controllers.
 72 | - [`\App\Event\BuildView`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/BuildView.php): Configure the
 73 |   template engine and register your own template folders.
 74 | - [`\App\Event\BuildPermissions`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/BuildPermissions.php):
 75 |   Register new permissions that are used by the Access Control List (ACL)
 76 | - [`\App\Event\GetNotifications`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/GetNotifications.php):
 77 |   Register new notifications shown to logged in users on the main dashboard page.
 78 | - [`\App\Event\GetSyncTasks`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/GetSyncTasks.php): Register new
 79 |   synchronized (cron) tasks to happen in the background automatically.
 80 | 
 81 | ### Media Events
 82 | 
 83 | - [`\App\Event\Media\GetAlbumArt`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Media/GetAlbumArt.php):
 84 |   Return the album art for a given track.
 85 | - [`\App\Event\Media\ReadMetadata`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Media/ReadMetadata.php):
 86 |   Fetch metadata about a media file.
 87 | - [`\App\Event\Media\WriteMetadata`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Media/WriteMetadata.php):
 88 |   Write metadata changes back to the media file.
 89 | 
 90 | ### NGINX Events
 91 | 
 92 | - [`\App\Event\Nginx\WriteNginxConfiguration`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Nginx/WriteNginxConfiguration.php):
 93 |   Write the per-station custom nginx configuration section.
 94 | 
 95 | ### Radio Events
 96 | 
 97 | - [`\App\Event\Radio\AnnotateNextSong`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Radio/AnnotateNextSong.php):
 98 |   Convert the metadata about a track into the "annotations" format used by Liquidsoap.
 99 | - [`\App\Event\Radio\BuildQueue`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Radio/BuildQueue.php):
100 |   Build the upcoming song playback queue for a station.
101 | - [`\App\Event\Radio\GenerateRawNowPlaying`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Radio/GenerateRawNowPlaying.php):
102 |   Ping the local mount points and remote relays to assemble a "raw" Now Playing response that AzuraCast will add rich
103 |   metadata to.
104 | - [`\App\Event\Radio\WriteLiquidsoapConfiguration`](https://github.com/AzuraCast/AzuraCast/blob/main/src/Event/Radio/WriteLiquidsoapConfiguration.php):
105 |   Add custom code to the Liquidsoap configuration for a given station.


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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