Try to get stuff working

src/Exception/MissingKeyException.php

@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pcm\MetadataBundle\Exception;
+
+final class MissingKeyException extends \RuntimeException
+{
+}
+

src/Greeting.php

@@ -1,18 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Pcm\MetadataBundle;
-
-final class Greeting
-{
-    public function __construct(private string $name)
-    {
-    }
-
-    public function greetPerson(): string
-    {
-        return sprintf("Hello there %s! Hope you're well.", $this->name);
-    }
-}
-

src/Interface/MetadataInterface.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pcm\MetadataBundle\Interface;
+
+use Pcm\MetadataBundle\Exception\MissingKeyException;
+
+interface MetadataInterface
+{
+    /**
+     * Retrieve a value by it's key.
+     *
+     * @return scalar|scalar[]
+     *
+     * @throws MissingKeyException when the key is not set
+     */
+    public function get(string $key): mixed;
+
+    /**
+     * Sets a value against the given key. This overwrites
+     * any existing value.
+     *
+     * @param scalar|scalar[] $value
+     */
+    public function set(string $key, mixed $value): static;
+
+    /**
+     * Whether a key has been set on the metadata.
+     */
+    public function has(string $key): bool;
+}
+
+
+

src/Model/Metadata.php

@@ -0,0 +1,43 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pcm\MetadataBundle\Model;
+
+use App\Exception\Dto\Metadata\MissingKeyException;
+use App\Interface\Dto\MetadataInterface;
+
+/**
+ * Store scalar metadata on an entity.
+ */
+final class Metadata implements MetadataInterface
+{
+    /**
+     * @param array<string, scalar|scalar[]> &$metadata
+     */
+    public function __construct(private array &$metadata)
+    {
+    }
+
+    public function get(string $key): mixed
+    {
+        if (!$this->has($key)) {
+            throw new MissingKeyException($key);
+        }
+
+        return $this->metadata[$key];
+    }
+
+    public function set(string $key, mixed $value): static
+    {
+        $this->metadata[$key] = $value;
+
+        return $this;
+    }
+
+    public function has(string $key): bool
+    {
+        return array_key_exists($key, $this->metadata);
+    }
+}
+

src/PcmMetadataBundle.php

@@ -4,9 +4,6 @@ declare(strict_types=1);
 
 namespace Pcm\MetadataBundle;
 
-use Symfony\Component\Config\Definition\Configurator\DefinitionConfigurator;
-use Symfony\Component\DependencyInjection\ContainerBuilder;
-use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;
 use Symfony\Component\HttpKernel\Bundle\AbstractBundle;
 
 /**
@@ -14,37 +11,5 @@ use Symfony\Component\HttpKernel\Bundle\AbstractBundle;
  */
 final class PcmMetadataBundle extends AbstractBundle
 {
-    /**
-     * @param array<string, mixed> $config
-     */
-    public function loadExtension(array $config, ContainerConfigurator $container, ContainerBuilder $builder): void
-    {
-        /**
-         * Load the services defined in services.yaml into the container.
-         */
-        $container->import('../config/services.yaml');
-
-        /**
-         * The "$config" variable contains an array representing the
-         * configuration and it's values.
-         *
-         * We can use it to configure the service container, for example
-         * by passing in arguments to any services we have defined.
-         *
-         * (see services.yaml)
-         */
-        $container->services()
-            ->get('pcm_example.greeting')
-            ->arg('$name', $config['name'])
-        ;
-    }
-
-    public function configure(DefinitionConfigurator $definition): void
-    {
-        /**
-         * Import the config definition (see definition.php).
-         */
-        $definition->import('../config/definition.php');
-    }
 }
 

src/Trait/MetadataTrait.php

@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Pcm\MetadataBundle\Trait;
+
+use Doctrine\DBAL\Types\Types;
+use Doctrine\ORM\Mapping as ORM;
+use Pcm\MetadataBundle\Model\Metadata;
+
+trait MetadataTrait
+{
+    /**
+     * @var array<string, scalar>|array<string, scalar[]>|null $rawMetadata
+     */
+    #[ORM\Column(type: Types::JSON, nullable: true, name: 'metadata')]
+    private ?array $rawMetadata = [];
+
+    public Metadata $metadata {
+        get {
+            $this->rawMetadata ??= [];
+
+            return new Metadata($this->rawMetadata);
+        }
+    }
+}
+