<?php

namespace App\Post\UseCases\ListRecentPosts;

use App\Exceptions\BadRequestException;
use App\Post\Post;
use App\Post\PostRepository;

class ListRecentPosts
{
    public function __construct(
        private PostRepository $postRepo,
    ) {}

    /**
     * @return Post[]
     *
     * @throws BadRequestException
     */
    public function execute(ListRecentPostsRequest $request): array
    {
        if ($request->limit <= 0) {
            throw new BadRequestException('limit must be positive');
        }

        return $this->postRepo->findRecent($request->limit);
    }
}