feat: tracking integration with GTM and CMP

src/Model/DomainConfig.php

@@ -0,0 +1,46 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Model;
+
+/**
+ * Value object representing domain-specific configuration.
+ *
+ * Holds theme key, GTM container ID, and CMP (Consent Management Platform) URL
+ * for a specific domain. Used by DomainConfigProvider to resolve configuration
+ * based on the request host.
+ */
+final readonly class DomainConfig
+{
+    public const DEFAULT_THEME = 'base';
+
+    public function __construct(
+        public string $theme = self::DEFAULT_THEME,
+        public string $gtmId = '',
+        public string $cmpUrl = '',
+    ) {
+    }
+
+    /**
+     * Creates a DomainConfig instance from a configuration array.
+     *
+     * @param array{theme?: string, gtm_id?: string, cmp_url?: string} $config The configuration array
+     */
+    public static function fromArray(array $config): self
+    {
+        return new self(
+            theme: $config['theme'] ?? self::DEFAULT_THEME,
+            gtmId: $config['gtm_id'] ?? '',
+            cmpUrl: $config['cmp_url'] ?? '',
+        );
+    }
+
+    /**
+     * Creates a default DomainConfig instance with base theme and empty tracking values.
+     */
+    public static function default(): self
+    {
+        return new self();
+    }
+}