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<?php
declare(strict_types=1);
// Post model: database operations for the posts table.
namespace App\Models;
use App\Database;
class Post
{
private \PDO $pdo;
public function __construct()
{
$this->pdo = Database::getInstance()->getPdo();
}
public function create(int $userId, string $imagePath): int
{
$stmt = $this->pdo->prepare(
'INSERT INTO posts (user_id, image_path) VALUES (:user_id, :image_path)'
);
$stmt->execute(['user_id' => $userId, 'image_path' => $imagePath]);
return (int) $this->pdo->lastInsertId();
}
public function findById(int $id): ?array
{
$stmt = $this->pdo->prepare('SELECT * FROM posts WHERE id = :id');
$stmt->execute(['id' => $id]);
$row = $stmt->fetch();
return $row ?: null;
}
public function findByUserId(int $userId): array
{
$stmt = $this->pdo->prepare(
'SELECT * FROM posts WHERE user_id = :user_id ORDER BY created_at DESC'
);
$stmt->execute(['user_id' => $userId]);
return $stmt->fetchAll();
}
public function findAllPaginated(int $limit, int $offset): array
{
$stmt = $this->pdo->prepare(
'SELECT posts.*, users.username FROM posts
JOIN users ON posts.user_id = users.id
ORDER BY posts.created_at DESC
LIMIT :limit OFFSET :offset'
);
// PDO needs explicit int binding for LIMIT/OFFSET
$stmt->bindValue('limit', $limit, \PDO::PARAM_INT);
$stmt->bindValue('offset', $offset, \PDO::PARAM_INT);
$stmt->execute();
return $stmt->fetchAll();
}
public function countAll(): int
{
$stmt = $this->pdo->query('SELECT COUNT(*) FROM posts');
return (int) $stmt->fetchColumn();
}
public function delete(int $id): void
{
$stmt = $this->pdo->prepare('DELETE FROM posts WHERE id = :id');
$stmt->execute(['id' => $id]);
}
}
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