Refactored TDF processing PHP code to confirm to new TDF format

build/scripts/Targets/TargetDescriptionFiles/PropertyGroup.php

@@ -0,0 +1,57 @@
+<?php
+namespace Targets\TargetDescriptionFiles;
+
+require_once __DIR__ . "/Property.php";
+
+class PropertyGroup
+{
+    public ?string $key = null;
+
+    /** @var Property[] */
+    public array $properties = [];
+
+    /** @var PropertyGroup[] */
+    public array $subPropertyGroups = [];
+
+    public function __construct(
+        ?string $key,
+        array $subPropertyGroups,
+        array $properties,
+    ) {
+        $this->key = $key;
+        $this->subPropertyGroups = $subPropertyGroups;
+        $this->properties = $properties;
+    }
+
+    public function getSubGroup(array|string $subGroupKeys): ?PropertyGroup
+    {
+        if (is_string($subGroupKeys)) {
+            $subGroupKeys = explode('.', $subGroupKeys);
+        }
+
+        $firstLevelSubGroupKey = array_shift($subGroupKeys);
+        foreach ($this->subPropertyGroups as $subGroup) {
+            if ($subGroup->key === $firstLevelSubGroupKey) {
+                return !empty($subGroupKeys) ? $subGroup->getSubGroup($subGroupKeys) : $subGroup;
+            }
+        }
+
+        return null;
+    }
+
+    public function getProperty(string $propertyKey): ?Property
+    {
+        foreach ($this->properties as $property) {
+            if ($property->key === $propertyKey) {
+                return $property;
+            }
+        }
+
+        return null;
+    }
+
+    public function getPropertyValue(string $propertyKey): ?string
+    {
+        return ($property = $this->getProperty($propertyKey)) instanceof Property ? $property->value : null;
+    }
+}