JSON API output

use RoundlyConsulting\Likes\Http\Resources\LikeResource;

return LikeResource::make($post);          // resolves the viewer from the request user
// or build the array yourself:
$post->toLikeArray($request->user());
// => [
//   'count' => 12,
//   'viewer_state' => ['liked' => true, 'reaction' => 'love'],
//   'breakdown' => ['like' => 8, 'love' => 4],
// ]

use Illuminate\Http\Request;
use Illuminate\Validation\Rule;
use RoundlyConsulting\Likes\Facades\Likes;
use RoundlyConsulting\Likes\Http\Resources\LikeResource;

final class PostReactionController
{
    public function update(Request $request, Post $post): LikeResource
    {
        $data = $request->validate([
            'reaction' => ['required', 'string', Rule::in(config('likes.reactions'))],
        ]);

        Likes::actor($request->user())->as($data['reaction'])->react($post);

        return LikeResource::make($post);
    }
}