<?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.");
        }

        // Automatically inject current language, translation array, and authenticated user
        $lang = $this->session->get('lang', 'en');
        $langFile = __DIR__ . "/../../resources/lang/{$lang}.php";
        $t = file_exists($langFile) ? require $langFile : [];
        $user = \App\Core\App::$app->request->routeParam('_authenticated_user');

        $data = array_merge([
            'lang' => $lang,
            't' => $t,
            'user' => $user,
        ], $data);

        // 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');
    }
}