<?php

namespace DesignPatterns\More\Repository;

use DesignPatterns\More\Repository\Domain\Post;
use DesignPatterns\More\Repository\Domain\PostId;

/**
 * This class is situated between Entity layer (class Post) and access object layer (Persistence).
 *
 * Repository encapsulates the set of objects persisted in a data store and the operations performed over them
 * providing a more object-oriented view of the persistence layer
 *
 * Repository also supports the objective of achieving a clean separation and one-way dependency
 * between the domain and data mapping layers
 */
class PostRepository
{
    /**
     * @var Persistence
     */
    private $persistence;

    public function __construct(Persistence $persistence)
    {
        $this->persistence = $persistence;
    }

    public function generateId(): PostId
    {
        return PostId::fromInt($this->persistence->generateId());
    }

    public function findById(PostId $id): Post
    {
        try {
            $arrayData = $this->persistence->retrieve($id->toInt());
        } catch (\OutOfBoundsException $e) {
            throw new \OutOfBoundsException(sprintf('Post with id %d does not exist', $id->toInt()), 0, $e);
        }

        return Post::fromState($arrayData);
    }

    public function save(Post $post)
    {
        $this->persistence->persist([
            'id' => $post->getId()->toInt(),
            'statusId' => $post->getStatus()->toInt(),
            'text' => $post->getText(),
            'title' => $post->getTitle(),
        ]);
    }
}