<?php

declare(strict_types=1);

namespace App\Repositories;

use Medoo\Medoo;
use App\Models\Post;

final class PostRepository
{
    public function __construct(private Medoo $db)
    {
    }

    public function findAll(): array
    {
        $rows = $this->db->select('post', '*', ['ORDER' => ['id' => 'DESC']]);
        return array_map(fn ($row) => Post::fromArray($row), $rows ?: []);
    }

    public function findBySlug(string $slug): ?Post
    {
        $row = $this->db->get('post', '*', ['slug' => $slug]);
        return $row ? Post::fromArray($row) : null;
    }

    public function findById(int $id): ?Post
    {
        $row = $this->db->get('post', '*', ['id' => $id]);
        return $row ? Post::fromArray($row) : null;
    }

    public function create(Post $post, string $slug): int
    {
        $this->db->insert('post', [
            'title' => $post->getTitle(),
            'content' => $post->getContent(),
            'slug' => $slug,
            'created_at' => date('Y-m-d H:i:s'),
            'updated_at' => date('Y-m-d H:i:s'),
        ]);
        return (int) $this->db->id();
    }

    public function update(int $id, Post $post, string $slug): void
    {
        $this->db->update('post', [
            'title' => $post->getTitle(),
            'content' => $post->getContent(),
            'slug' => $slug,
            'updated_at' => date('Y-m-d H:i:s'),
        ], ['id' => $id]);
    }

    public function delete(int $id): void
    {
        $this->db->delete('post', ['id' => $id]);
    }

    public function slugExists(string $slug, ?int $excludeId = null): bool
    {
        $existing = $this->db->get('post', 'id', ['slug' => $slug]);
        return $existing && (!$excludeId || $existing !== $excludeId);
    }
}