MVC, Repository example

app.php

<?php

use PDO;

# App\Pessoa.php
class Pessoa
{
    public $id;
    public $name;
    public $gender;
}

# App\Repositories\AbstractRepository.php
abstract class AbstractRepository
{
    private $pdo;

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

# App\Repositories\PessoaRepository.php
namespace App\Repositories;

use App\Pessoa;
use App\Repositories\AbstractRepository;

class PessoaRepository extends AbstractRepository
{
    private $model = Pessoa::class;

    public function all($id)
    {
        $id = intval($id);
        $sql = "select id, name, gender from pessoas";
        $sth = $pdo->prepare($sql);
        $sth->execute();
        return $sth->fetchAll(PDO::FETCH_CLASS, $this->model);
    }

    public function find($id)
    {
        $id = intval($id);
        $sql = "select id, name, gender from pessoas where id = {$id}";
        $sth = $pdo->query($sql);
        $sth->setFetchMode(PDO::FETCH_CLASS, $this->model);

        return $sth->fetch();
    }
}

# App\Controllers\AbstractController
abstract class AbstractController
{
    public $pdo;

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

        $this->beforeAction();
    }

    /**
     * HOOK
     */
    protected function beforeAction()
    {

    }
}


# App\Controllers\PessoasController
namespace App\Controllers\PessoasController;

use App\Repositories\AbstractController;
use App\Repositories\PessoaRepository;


class PessoasController extends AbstractController
{
    protected $pessoaRepository;

    protected function beforeAction()
    {
        $this->pessoaRepository = new PessoaRepository($this->pdo);
    }

    public function indexAction()
    {
        $pessoas = $this->pessoaRepository->all();

        var_dump($pessoas);
    }

    public function showAction()
    {
        // $id = filter_input(INPUT_GET, 'id', FILTER_VALIDATE_INT); 
        // VERIFICAR ESSa função filter_input

        $id = intval($_GET['id']);

        $pessoa = $this->pessoaRepository->find($id);

        var_dump($pessoa);
    }
}

# App/Router.php

namespace App;

class Router
{
    private $routes;

    public function __construct(array $routes)
    {
        $this->routes = $routes;
    }

    public function hasRoute($pagina)
    {
        return array_key_exists($pagina, $this->routes);
    }

    public function run($pagina)
    {
        if (isset($_GET['acao']) && $_GET['acao'] != '') {
            $acao = filter_input(INPUT_GET, 'acao', FILTER_SANITIZE_ENCODED);
        } else {
            $acao = 'index';
        }
    
        $acao .= 'Action';

        $nameController = $this->routes[$pagina];
        if (class_exists($nameController)) {
            $controller = new $nameController;
            if (method_exists($controller, $acao)) {
                $controller->$acao();
            } else {
                $this->pageNotFound();
            }
        } else {
            $this->pageNotFound();
        }
    }
    
    public function pageNotFound()
    {
        echo "Erro 404: Page not found!";
    }
}


# public/index.php
use App\Router;
use App\Controllers\PessoasController;

$routes = [
    'pessoas' => PessoasController::class
];

$request = $_SERVER['REQUEST_URI'];

$parsed_uri = parse_url($request);

$router = new Router($'routes');
$router->run($parsed_uri['path']);