implement clickable mentions

composer.json

@@ -9,6 +9,7 @@
         "ext-iconv": "*",
         "jdenticon/jdenticon": "^1.0",
         "kevachat/kevacoin": "^1.0",
+        "league/commonmark": "^2.4",
         "symfony/console": "7.0.*",
         "symfony/dotenv": "7.0.*",
         "symfony/flex": "^2",
@@ -16,7 +17,9 @@
         "symfony/runtime": "7.0.*",
         "symfony/translation": "7.0.*",
         "symfony/twig-bundle": "7.0.*",
-        "symfony/yaml": "7.0.*"
+        "symfony/yaml": "7.0.*",
+        "twig/extra-bundle": "^3.8",
+        "twig/markdown-extra": "^3.8"
     },
     "config": {
         "allow-plugins": {

config/bundles.php

@@ -3,4 +3,5 @@
 return [
     Symfony\Bundle\FrameworkBundle\FrameworkBundle::class => ['all' => true],
     Symfony\Bundle\TwigBundle\TwigBundle::class => ['all' => true],
+    Twig\Extra\TwigExtraBundle\TwigExtraBundle::class => ['all' => true],
 ];

src/Twig/AppExtension.php

@@ -31,6 +31,13 @@ class AppExtension extends AbstractExtension
                     'formatAgo'
                 ]
             ),
+            new TwigFilter(
+                'message_to_markdown',
+                [
+                    $this,
+                    'messageToMarkdown'
+                ]
+            ),
             new TwigFilter(
                 'url_to_markdown',
                 [
@@ -38,6 +45,13 @@ class AppExtension extends AbstractExtension
                     'urlToMarkdown'
                 ]
             ),
+            new TwigFilter(
+                'mention_to_markdown',
+                [
+                    $this,
+                    'mentionToMarkdown'
+                ]
+            ),
             new TwigFilter(
                 'keva_namespace_value',
                 [
@@ -119,6 +133,21 @@ class AppExtension extends AbstractExtension
         }
     }
 
+    public function messageToMarkdown(
+        string $text
+    ): string
+    {
+        $text = $this->urlToMarkdown(
+            $text
+        );
+
+        $text = $this->mentionToMarkdown(
+            $text
+        );
+
+        return $text;
+    }
+
     public function urlToMarkdown(
         string $text
     ): string
@@ -130,6 +159,17 @@ class AppExtension extends AbstractExtension
         );
     }
 
+    public function mentionToMarkdown(
+        string $text
+    ): string
+    {
+        return preg_replace(
+            '~(@[A-z0-9]{64})~i',
+            '[$1](#$1)',
+            $text
+        );
+    }
+
     private function plural(int $number, array $texts)
     {
         $cases = [2, 0, 1, 1, 1, 2];

templates/default/room/index.html.twig

@@ -35,7 +35,7 @@
                         </span>
                     {% endif %}
                     <p>
-                        {{ post.message }}
+                        {{ post.message | message_to_markdown | markdown_to_html }}
                     </p>
                 </li>
             {% endfor %}