From 26ff33a8b01ba8af1c02b3c1ddcd5936eb12f2a8 Mon Sep 17 00:00:00 2001
From: sebprt <sebastien@kiboko.fr>
Date: Fri, 8 Nov 2024 15:32:25 +0100
Subject: [PATCH] Create a new expression to get file extension

---
 src/FileExtension.php                    | 37 ++++++++++++++++++++++++
 src/StringExpressionLanguageProvider.php |  1 +
 2 files changed, 38 insertions(+)
 create mode 100644 src/FileExtension.php

diff --git a/src/FileExtension.php b/src/FileExtension.php
new file mode 100644
index 0000000..c10187e
--- /dev/null
+++ b/src/FileExtension.php
@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Kiboko\Component\StringExpressionLanguage;
+
+use Symfony\Component\ExpressionLanguage\ExpressionFunction;
+
+final class FileExtension extends ExpressionFunction
+{
+    public function __construct($name)
+    {
+        parent::__construct(
+            $name,
+            $this->compile(...)->bindTo($this),
+            $this->evaluate(...)->bindTo($this)
+        );
+    }
+
+    private function compile(string $value): string
+    {
+        return <<<PHP
+            (function () use (\$input) : string {
+                \$parts = explode('.', basename($value));
+
+                return end(\$parts);
+            })()
+            PHP;
+    }
+
+    private function evaluate(array $context, string $imageUrl): string
+    {
+        $parts = explode('.', basename($imageUrl));
+
+        return end($parts);
+    }
+}
diff --git a/src/StringExpressionLanguageProvider.php b/src/StringExpressionLanguageProvider.php
index b298a4e..6d6c390 100644
--- a/src/StringExpressionLanguageProvider.php
+++ b/src/StringExpressionLanguageProvider.php
@@ -38,6 +38,7 @@ public function getFunctions(): array
             new AsInteger('asInteger'),
             new AsString('asString'),
             new Slugify('slugify'),
+            new FileExtension('fileExtension'),
         ];
     }
 }