<?php

namespace Elements;

use Elements\Controller\Card;
use Elements\Controller\Home;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

class Router
{
  private $routes = [
    'GET' => [
      '/' => [Home::class, 'index'],
    ],

    'POST' => [
      '/card/add' => [Card::class, 'add'],
    ],
  ];

  /**
   * Router constructor.
   */
  public function __construct()
  {
    $request = Request::createFromGlobals();
    $response = new Response();

    $method = $request->getMethod();
    $path = $request->getPathInfo();

    // if the route is defined
    if (isset($this->routes[$method][$path])) {
      try {
	// run controller function
	$content = call_user_func($this->routes[$method][$path], $request);

	// set response to new response
	if ($content instanceof Response) {
	  $response = $content;
	}

	// set content directly otherwise
	else {
	  $response->setContent($content);
	}
      }

      // catch any errors
      catch (AppException $exception) {
	$response->setStatusCode($exception->getCode());
	$response->setContent($exception->getMessage());
      } catch (\Exception $exception) {
	$response->setStatusCode(Response::HTTP_BAD_REQUEST);
	$response->setContent($exception->getMessage());
      }
    }

    // route is not defined
    else {
      $response->setStatusCode(Response::HTTP_NOT_FOUND);
      $response->setContent('Not Found');
    }

    $response->send();
  }
}