<?php

declare(strict_types=1);

class PostManager
{
    private PDO $db;

    public function __construct(PDO $db)
    {
        $this->db = $db;
    }

    public function getAll(): array
    {
        $stmt = $this->db->query('SELECT * FROM posts ORDER BY created_at DESC');
        return $stmt->fetchAll(PDO::FETCH_ASSOC);
    }

    public function get(int $id): ?array
    {
        $stmt = $this->db->prepare('SELECT * FROM posts WHERE id = :id');
        $stmt->execute(['id' => $id]);
        $post = $stmt->fetch(PDO::FETCH_ASSOC);
        return $post ?: null;
    }

    public function create(string $title, string $content, string $published_at): int
    {
        $stmt = $this->db->prepare('
            INSERT INTO posts (title, content, created_at, is_published)
            VALUES (:title, :content, :published_at, true)
        ');
        $stmt->execute([
            'title' => $title,
            'content' => $content,
            'published_at' => $published_at,
        ]);
        return (int)$this->db->lastInsertId();
    }


    public function update(int $id, string $title, string $content, string $published_at, bool $published): bool
    {
        $stmt = $this->db->prepare('
            UPDATE posts 
            SET title = :title,
                content = :content,
                created_at = :published_at,
                is_published = :published,
                updated_at = NOW()
            WHERE id = :id
        ');
        return $stmt->execute([
            'id' => $id,
            'title' => $title,
            'content' => $content,
            'published_at' => $published_at,
            'published' => $published,
        ]);
    }


    public function delete(int $id): bool
    {
        $stmt = $this->db->prepare('DELETE FROM posts WHERE id = :id');
        return $stmt->execute(['id' => $id]);
    }
}