feat(posts): support specifying a post's language

src/BlueskyPost.php

@@ -2,32 +2,47 @@
 
 namespace NotificationChannels\Bluesky;
 
+use Illuminate\Support\Arr;
 use NotificationChannels\Bluesky\RichText\Facets\Facet;
 
 class BlueskyPost
 {
     private function __construct(
         public string $text = '',
         public array $facets = [],
+        public array $languages = [],
     ) {
     }
 
     public function toArray(): array
     {
-        return [
+        return array_filter([
             'text' => $this->text,
             'facets' => array_map(
                 callback: fn (array|Facet $facet) => \is_array($facet) ? $facet : $facet->toArray(),
                 array: $this->facets,
             ),
-        ];
+            'langs' => $this->languages,
+        ]);
     }
 
     public static function make(): static
     {
         return new static();
     }
 
+    /**
+     * Sets the language(s) of the post.
+     *
+     * @see https://www.docs.bsky.app/blog/create-post#setting-the-posts-language
+     */
+    public function language(string|array $language): static
+    {
+        $this->languages = Arr::wrap($language);
+
+        return $this;
+    }
+
     /**
      * Adds a facet to the post. Note that most facets are resolved automatically.
      */

tests/BlueskyPostTest.php

@@ -7,6 +7,7 @@
 it('can be converted to an array', function () {
     $post = BlueskyPost::make()
         ->text('foo')
+        ->language(['en-US'])
         ->facet(new Facet(
             range: [6, 20],
             features: [
@@ -31,6 +32,7 @@
                 ],
             ],
         ],
+        'langs' => ['en-US'],
     ]);
 });