<?php
namespace Pecee\SimpleRouter;

use Pecee\Http\Request;
use Pecee\SimpleRouter\Exceptions\NotFoundHttpException;

class RouterResource extends LoadableRoute implements IControllerRoute
{
	protected $controller;

	public function __construct($url, $controller)
	{
		$this->setUrl($url);
		$this->controller = $controller;
	}

	public function renderRoute(Request $request)
	{
		if ($this->getCallback() !== null && is_callable($this->getCallback())) {
			// When the callback is a function
			call_user_func_array($this->getCallback(), $this->getParameters());
		} else {
			// When the callback is a method
			$controller = explode('@', $this->getCallback());
			$className = $this->getNamespace() . '\\' . $controller[0];
			$class = $this->loadClass($className);
			$method = strtolower($controller[1]);

			if (!method_exists($class, $method)) {
				throw new NotFoundHttpException(sprintf('Method %s does not exist in class %s', $method, $className), 404);
			}

			call_user_func_array([$class, $method], $this->getParameters());

			return $class;
		}

		return null;
	}

	protected function call($method, $parameters)
	{
		$this->setCallback($this->controller . '@' . $method);
		$this->parameters = $parameters;

		return true;
	}

	public function matchRoute(Request $request)
	{
		$url = parse_url(urldecode($request->getUri()), PHP_URL_PATH);
		$url = rtrim($url, '/') . '/';

		$route = rtrim($this->url, '/') . '/{id?}/{action?}';

		$parameters = $this->parseParameters($route, $url);

		if ($parameters !== null) {

			$parameters = array_merge($this->parameters, (array)$parameters);

			$action = isset($parameters['action']) ? $parameters['action'] : null;
			unset($parameters['action']);

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

			// Delete
			if (isset($parameters['id']) && $method === static::REQUEST_TYPE_DELETE) {
				return $this->call('destroy', $parameters);
			}

			// Update
			if (isset($parameters['id']) && in_array($method, [static::REQUEST_TYPE_PATCH, static::REQUEST_TYPE_PUT])) {
				return $this->call('update', $parameters);
			}

			// Edit
			if (isset($parameters['id']) && strtolower($action) === 'edit' && $method === static::REQUEST_TYPE_GET) {
				return $this->call('edit', $parameters);
			}

			// Create
			if (strtolower($action) === 'create' && $method === static::REQUEST_TYPE_GET) {
				return $this->call('create', $parameters);
			}

			// Save
			if ($method === static::REQUEST_TYPE_POST) {
				return $this->call('store', $parameters);
			}

			// Show
			if (isset($parameters['id']) && $method === static::REQUEST_TYPE_GET) {
				return $this->call('show', $parameters);
			}

			// Index
			return $this->call('index', $parameters);
		}

		return null;
	}

	/**
	 * @return string
	 */
	public function getController()
	{
		return $this->controller;
	}

	/**
	 * @param string $controller
	 * @return static
	 */
	public function setController($controller)
	{
		$this->controller = $controller;

		return $this;
	}

}