chore: cleanup extend, create serializer mutators

extend.php

@@ -49,34 +49,17 @@
 
     (new Extend\Event())
         ->listen(PostSaving::class, Listeners\SavePollsToDatabase::class)
-        ->listen(SettingsSaved::class, function (SettingsSaved $event) {
-            foreach ($event->settings as $key => $value) {
-                if ($key === 'fof-polls.optionsColorBlend') {
-                    resolve('fof-user-bio.formatter')->flush();
-
-                    return;
-                }
-            }
-        }),
+        ->listen(SettingsSaved::class, Listeners\ClearFormatterCache::class),
 
     (new Extend\ApiSerializer(DiscussionSerializer::class))
-        ->attribute('hasPoll', function (DiscussionSerializer $serializer, Discussion $discussion): bool {
-            return $discussion->polls()->exists();
-        })
-        ->attribute('canStartPoll', function (DiscussionSerializer $serializer, Discussion $discussion): bool {
-            return $serializer->getActor()->can('polls.start', $discussion);
-        }),
+        ->attributes(Api\AddDiscussionAttributes::class),
 
     (new Extend\ApiSerializer(PostSerializer::class))
         ->hasMany('polls', PollSerializer::class)
-        ->attribute('canStartPoll', function (PostSerializer $serializer, Post $post): bool {
-            return $serializer->getActor()->can('startPoll', $post);
-        }),
+        ->attributes(Api\AddPostAttributes::class),
 
     (new Extend\ApiSerializer(ForumSerializer::class))
-        ->attribute('canStartPolls', function (ForumSerializer $serializer): bool {
-            return $serializer->getActor()->can('discussion.polls.start');
-        }),
+        ->attributes(Api\AddForumAttributes::class),
 
     (new Extend\ApiController(Controller\ListDiscussionsController::class))
         ->addOptionalInclude(['firstPost.polls']),

src/Api/AddDiscussionAttributes.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace FoF\Polls\Api;
+
+use Flarum\Api\Serializer\DiscussionSerializer;
+use Flarum\Discussion\Discussion;
+
+class AddDiscussionAttributes
+{
+    public function __invoke(DiscussionSerializer $serializer, Discussion $discussion, array $attributes): array
+    {
+        $attributes['hasPoll'] = $discussion->polls()->exists();
+        $attributes['canStartPoll'] = $serializer->getActor()->can('polls.start', $discussion);
+
+        return $attributes;
+    }
+}

src/Api/AddForumAttributes.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace FoF\Polls\Api;
+
+use Flarum\Api\Serializer\ForumSerializer;
+
+class AddForumAttributes
+{
+    public function __invoke(ForumSerializer $serializer, array $model, array $attributes): array
+    {
+        $attributes['canStartPolls'] = $serializer->getActor()->can('discussion.polls.start');
+
+        return $attributes;
+    }
+}

src/Api/AddPostAttributes.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace FoF\Polls\Api;
+
+class AddPostAttributes
+{
+    public function __invoke($serializer, $post, $attributes)
+    {
+        $attributes['canStartPoll'] = $serializer->getActor()->can('startPoll', $post);
+
+        return $attributes;
+    }
+}

src/Listeners/ClearFormatterCache.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace FoF\Polls\Listeners;
+
+use Flarum\Settings\Event\Saved;
+
+class ClearFormatterCache
+{
+    public function handle(Saved $event): void
+    {
+        foreach ($event->settings as $key => $value) {
+            if ($key === 'fof-polls.optionsColorBlend') {
+                resolve('fof-user-bio.formatter')->flush();
+
+                return;
+            }
+        }
+    }
+}