improvement App\Parameters

src/Parameters.php

@@ -2,29 +2,88 @@
 
 namespace App;
 
+use function array_key_exists;
+use function strpos;
+use function explode;
+
 /**
  * Parameters provides a way to get application parameters defined in config/params.php
  *
  * In order to use in a handler or any other place supporting auto-wired injection:
  *
  * ```php
+ * $params = [
+ *      'admin' => [
+ *          'email' => 'demo@example.com'
+ *      ]
+ * ];
+ * ```
+ *
+ * ```php
  * public function actionIndex(Parameters $parameters)
  * {
- *     $adminEmail = $parameters->get('admin.email', 'admin@example.com');
+ *     $adminEmail = $parameters->get('admin.email', 'admin@example.com'); // return demo@example.com or admin@example.com if search key not exists in parameters
  * }
  * ```
  */
 class Parameters
 {
     private array $parameters;
+    private string $glue;
+
+    public function __construct(array $data, string $glue = '.')
+    {
+        $this->parameters = $data;
+        $this->glue = $glue;
+    }
+
+    public function get(string $key, $default = null)
+    {
+        if (strpos($key, $this->glue) !== false) {
+            $keys = explode($this->glue, $key);
+            return $this->hasNesting($keys) ? $this->getNesting($keys) : $default;
+        }
+
+        return $this->has($key) ? $this->parameters[$key] : $default;
+    }
+
+    public function has(string $key): bool
+    {
+        if (strpos($key, $this->glue) !== false) {
+            return $this->hasNesting(explode($this->glue, $key));
+        }
+
+        return array_key_exists($key, $this->parameters);
+    }
 
-    public function __construct(array $parameters)
+    public function getAll(): array
     {
-        $this->parameters = $parameters;
+        return $this->parameters;
     }
 
-    public function get(string $name, $default = null)
+    private function hasNesting(array $keys): bool
     {
-        return $this->parameters[$name] ?? $default;
+        $ref = $this->parameters;
+        foreach ($keys as $key) {
+            if (!array_key_exists($key, $ref)) {
+                return false;
+            }
+            $ref = $ref[$key];
+        }
+
+        return true;
+    }
+
+    private function getNesting(array $keys)
+    {
+        $data = $this->parameters;
+        foreach ($keys as $key) {
+            if (!array_key_exists($key, $data)) {
+                return null;
+            }
+            $data = $data[$key];
+        }
+
+        return $data;
     }
 }