Test for palletes not existing

src/Twig/Functions/IconExtension.php

@@ -15,7 +15,8 @@ final class IconExtension extends AbstractExtension
     private const DEFAULT_OPTIONS = [
         'icon' => null,
         'title' => null,
-        'size' => self::DEFAULT_SIZE
+        'size' => self::DEFAULT_SIZE,
+        'colour' => 'primary'
     ];
 
     public function __construct(private array $directories, private array $palletes)
@@ -59,7 +60,14 @@ final class IconExtension extends AbstractExtension
 
     /**
      * @param array $options
-     * [ options here ]
+     * ```
+     * $options = [
+     *     'icon'   => (string) Which icon to use
+     *     'title'  => (?string) Text to appear on mouse hover
+     *     'size'   => (int) Height and width in px
+     *     'colour' => (string) Main colour pallete
+     * ]
+     * ```
      */
     public function renderIcon(array $userOptions): string
     {
@@ -69,6 +77,8 @@ final class IconExtension extends AbstractExtension
         $rawSvgMarkup = $this->getSvgMarkup($iconFilepath);
         $cleanSvgMarkup = $this->cleanSvgMarkup($rawSvgMarkup);
 
+        $mainColour = $this->getMainPallete($options['colour']);
+
         if ($this->isNonEmptyString($options['title']))
             $markup = $this->addTitleToMarkup($cleanSvgMarkup, $options['title']);
 
@@ -112,6 +122,14 @@ final class IconExtension extends AbstractExtension
         return preg_replace('/<title>.*<\/title>/', '', $markup);
     }
 
+    private function getMainPallete(string $palleteName): array
+    {
+        if (array_key_exists($palleteName, $this->palletes))
+            return $this->palletes[$palleteName];
+
+        throw new PalleteNotFound("The pallete '$palleteName' was not found!");
+    }
+
     private function isNonEmptyString(mixed $title): bool
     {
         if (!is_string($title) && null !== $title)
@@ -168,6 +186,8 @@ final class IconExtension extends AbstractExtension
 
 class IconNotFound extends \Exception {};
 
+class PalleteNotFound extends \Exception {};
+
 // class="stroke-neutral-400 fill-neutral-400"
 
 // hover:stroke-ses-highlight