<?php

namespace App\Controllers;

use App\Core\App;
use App\Core\Session;

abstract class Controller
{
    protected Session $session;

    public function __construct()
    {
        $this->session = App::$app->session;
    }

    /**
     * Render a view within a layout.
     */
    protected function render(string $view, array $data = [], string $layout = 'app'): string
    {
        $viewFile = __DIR__ . "/../../resources/views/{$view}.php";
        if (!file_exists($viewFile)) {
            throw new \Exception("View template {$view} not found.");
        }

        // Extract variables to local scope
        extract($data);

        // Capture inner view content
        ob_start();
        include $viewFile;
        $content = ob_get_clean();

        // Capture layout content wrapping the inner view
        $layoutFile = __DIR__ . "/../../resources/views/layouts/{$layout}.php";
        if (!file_exists($layoutFile)) {
            return $content;
        }

        ob_start();
        include $layoutFile;
        return ob_get_clean();
    }

    /**
     * Escape string values for rendering safely.
     */
    protected function escape(mixed $data): string
    {
        return htmlspecialchars((string)$data, ENT_QUOTES, 'UTF-8');
    }
}