Use container for dependencies

This looks more complicated but removes a lot of hard coded class connections
and will make injecting config easier.

bin/pfatt

@@ -3,12 +3,8 @@
 
 require __DIR__ . '/../vendor/autoload.php';
 
-use Pfatt\Commands\Monitor;
-use Pfatt\Commands\Startup;
-use Symfony\Component\Console\Application;
+use Pfatt\PfattKernel;
 
-$application = new Application();
-$application->add(new Monitor());
-$application->add(new Startup());
-
-$application->run();
+(new PfattKernel())
+  ->create()
+  ->run();

box.json.dist

@@ -1,6 +1,7 @@
 {
     "output" : "build/pfatt.phar",
     "files": [
-        "bin/pfatt"
+        "bin/pfatt",
+        "cache/container.php"
     ]
 }

cache/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

composer.json

@@ -18,6 +18,7 @@
         "php": ">=7.4",
         "psr/log": "^1.1",
         "symfony/console": "^5.4",
+        "symfony/dependency-injection": "^5.4",
         "symfony/process": "^5.4"
     },
     "require-dev": {

src/Commands/Monitor.php

@@ -4,12 +4,11 @@ declare(strict_types=1);
 
 namespace Pfatt\Commands;
 
-use Pfatt\Config;
-use Pfatt\Logger;
-use Pfatt\NgController;
+use Pfatt\Service\Config;
+use Pfatt\Service\Logger;
+use Pfatt\Service\NgController;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
-use Symfony\Component\Console\Logger\ConsoleLogger;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Process\Process;
 
@@ -21,12 +20,15 @@ final class Monitor extends Command
     protected Logger $logger;
     protected NgController $ngControl;
 
-    protected function configure(): void
-    {
-        // @todo Inject these. Maybe with a factory or container.
-        $this->config = new Config('', '', '');
-        $this->logger = new Logger('pfatt-5268AC');
-        $this->ngControl = new NgController($this->logger);
+    public function __construct(
+      Config $config,
+      Logger $logger,
+      NgController $ngControl
+    ) {
+        parent::__construct('monitor');
+        $this->config = $config;
+        $this->logger = $logger;
+        $this->ngControl = $ngControl;
     }
 
     /**

src/Commands/Startup.php

@@ -4,9 +4,9 @@ declare(strict_types=1);
 
 namespace Pfatt\Commands;
 
-use Pfatt\Config;
-use Pfatt\Logger;
-use Pfatt\NgController;
+use Pfatt\Service\Config;
+use Pfatt\Service\Logger;
+use Pfatt\Service\NgController;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -20,20 +20,26 @@ final class Startup extends Command
     protected Logger $logger;
     protected NgController $ngControl;
 
-    protected function configure(): void
-    {
-        // @todo Inject these. Maybe with a factory or container.
-        $this->config = new Config('', '', '');
-        $this->logger = new Logger('pfatt');
-        $this->ngControl = new NgController($this->logger);
+    public function __construct(
+      Config $config,
+      Logger $logger,
+      NgController $ngControl
+    ) {
+        parent::__construct('startup');
+        $this->config = $config;
+        $this->logger = $logger;
+        $this->ngControl = $ngControl;
     }
 
-
     /**
      * {@inheritDoc}
      */
-    protected function execute(InputInterface $input, OutputInterface $output): int
-    {
+    protected function execute(
+      InputInterface $input,
+      OutputInterface $output
+    ): int {
+        $this->logger->setOutput($output);
+
         switch ($this->getVeriant()) {
             case 'opnsense':
                 $kldload = function (string $mod): Process {
@@ -53,7 +59,11 @@ final class Startup extends Command
             case 'pfsense':
             default:
                 $attach = function (string $interface): Process {
-                    return new Process(['/usr/local/bin/php', '-r', '"pfSense_ngctl_attach(\'.\', \'' . $interface . '\';"']);
+                    return new Process([
+                      '/usr/local/bin/php',
+                      '-r',
+                      '"pfSense_ngctl_attach(\'.\', \'' . $interface . '\';"'
+                    ]);
                 };
 
                 $this->logger->info('attaching interfaces to ng_ether...');
@@ -73,7 +83,9 @@ final class Startup extends Command
     /**
      * @return string
      */
-    private function getVeriant(): string {
+    private function getVeriant(): string
+    {
+        // @todo detect the variant to trigger different behaviors.
         return 'opnsense';
     }
 }

src/PfattApplication.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pfatt;
+
+use Symfony\Component\Console\Application;
+
+final class PfattApplication extends Application
+{
+}

src/PfattKernel.php

@@ -0,0 +1,94 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pfatt;
+
+use Pfatt\Commands\Monitor;
+use Pfatt\Commands\Startup;
+use Pfatt\Service\Config;
+use Pfatt\Service\Logger;
+use Pfatt\Service\NgController;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\Console\Application;
+use Symfony\Component\Console\CommandLoader\ContainerCommandLoader;
+use Symfony\Component\DependencyInjection\ContainerBuilder;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Dumper\PhpDumper;
+use Symfony\Component\DependencyInjection\Reference;
+
+final class PfattKernel
+{
+    /**
+     * @var string[]
+     */
+    private $commands = [
+      'monitor' => Monitor::class,
+      'startup' => Startup::class,
+    ];
+
+    public function create(): Application
+    {
+        // Lazy load command with container
+        $container = $this->getContainer();
+        /** @var \Pfatt\PfattApplication $application */
+        $application = $container->get(PfattApplication::class);
+        return $application;
+    }
+
+    public function getContainer(): ContainerInterface
+    {
+        $file = __DIR__ . '/../cache/container.php';
+        if (!file_exists($file)) {
+            $containerBuilder = new ContainerBuilder();
+
+            $containerBuilder->register(Logger::class, Logger::class)
+              ->setPublic(true);
+            $containerBuilder->setAlias(LoggerInterface::class, Logger::class);
+            $containerBuilder->register('logger-5268', Logger::class)
+              ->setPublic(true)
+              ->setArgument('$channel', 'pfatt-5268AC');
+            $containerBuilder->register(Config::class, Config::class)
+              ->setPublic(true)
+              ->setArguments(['', '', '']);
+            $containerBuilder->autowire(NgController::class, NgController::class)
+              ->setPublic(true);
+
+            $containerBuilder->autowire(Monitor::class, Monitor::class)
+              ->setPublic(true)
+              ->setArgument(Logger::class, new Reference('logger-5268'));
+            $containerBuilder->autowire(Startup::class, Startup::class)
+              ->setPublic(true);
+
+            $containerBuilder->register(ContainerCommandLoader::class, ContainerCommandLoader::class)
+              ->setArguments([
+                new Reference('service_container'),
+                $this->commands
+              ])
+              ->setPublic(true);
+            $containerBuilder->register(PfattApplication::class, PfattApplication::class)
+                ->setArguments(['PfATT'])
+                ->addMethodCall('setCommandLoader', [new Reference(ContainerCommandLoader::class)])
+                ->setPublic(true);
+
+            $containerBuilder->compile();
+            $dumper = new PhpDumper($containerBuilder);
+            /**
+             * This will always be a string because of the default options.
+             * @psalm-suppress MixedArgumentTypeCoercion
+             */
+            file_put_contents($file, $dumper->dump());
+        }
+
+        require_once $file;
+        /**
+         * Tell static analysis of this dynamic class.
+         * @var \Symfony\Component\DependencyInjection\ContainerInterface $container
+         * @psalm-suppress UndefinedClass
+         * @phpstan-ignore-next-line
+         */
+        $container = new \ProjectServiceContainer();
+        return $container;
+    }
+
+}

src/Service/Config.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Pfatt;
+namespace Pfatt\Service;
 
 /**
  * Config wrapper.

src/Service/Logger.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Pfatt;
+namespace Pfatt\Service;
 
 use Psr\Log\AbstractLogger;
 use Psr\Log\LoggerInterface;
@@ -20,7 +20,7 @@ class Logger extends AbstractLogger
      */
     private ?LoggerInterface $logger;
 
-    public function __construct(string $channel, LoggerInterface $logger = null)
+    public function __construct(string $channel = 'pfatt', LoggerInterface $logger = null)
     {
         $this->channel = $channel;
         $this->logger = $logger;

src/Service/NgController.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-namespace Pfatt;
+namespace Pfatt\Service;
 
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerInterface;