<?php declare(strict_types=1);

/*
 * This file is part of the Rapsys TreeBundle package.
 *
 * (c) Raphaël Gertz <symfony@rapsys.eu>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Rapsys\TreeBundle\Controller;

use Psr\Container\ContainerInterface;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
use Symfony\Component\Routing\RouterInterface;
use Symfony\Contracts\Translation\TranslatorInterface;

use Twig\Environment;

use Rapsys\TreeBundle\RapsysTreeBundle;

/**
 * {@inheritdoc}
 */
class TreeController extends AbstractController {
	/**
	 * Config array
	 */
	protected array $config;

	/**
	 * Context array
	 */
	protected array $context = [];

	/**
	 * Locale string
	 */
	protected string $locale;

	/**
	 * Request instance
	 */
	protected Request $request;

	/**
	 * Route string
	 */
	protected string $route;

	/**
	 * Route params array
	 */
	protected array $routeParams;

	/**
	 * Creates a new tree controller
	 *
	 * @param ContainerInterface $container The ContainerInterface instance
	 * @param RouterInterface $router The router instance
	 * @param RequestStack $stack The stack instance
	 * @param TranslatorInterface $translator The translator instance
	 * @param Environment $twig The twig environment instance
	 */
	function __construct(protected ContainerInterface $container, protected RouterInterface $router, protected RequestStack $stack, protected TranslatorInterface $translator, protected Environment $twig) {
		//Retrieve config
		$this->config = $container->getParameter(RapsysTreeBundle::getAlias());

		//Get main request
		$this->request = $this->stack->getMainRequest();

		//Get current locale
		$this->locale = $this->request->getLocale();

		//Set canonical
		$canonical = null;

		//Set alternates
		$alternates = [];

		//Set route
		//TODO: default to not found route ???
		//TODO: pour une url not found, cet attribut n'est pas défini, comment on fait ???
		//XXX: on génère une route bidon par défaut ???
		$this->route = $this->request->attributes->get('_route');

		//Set route params
		$this->routeParams = $this->request->attributes->get('_route_params');

		//With route and routeParams
		if ($this->route !== null && $this->routeParams !== null) {
			//Set canonical
			$canonical = $this->router->generate($this->route, $this->routeParams, UrlGeneratorInterface::ABSOLUTE_URL);

			//Set alternates
			$alternates = [
				substr($this->locale, 0, 2) => [
					'absolute' => $canonical
				]
			];
		}

		//Set the context
		$this->context = [
			'alternates' => $alternates,
			'canonical' => $canonical,
			'contact' => [
				'address' => $this->config['contact']['address'],
				'name' => $this->translator->trans($this->config['contact']['name'])
			],
			'copy' => [
				'by' => $this->translator->trans($this->config['copy']['by']),
				'link' => $this->config['copy']['link'],
				'long' => $this->translator->trans($this->config['copy']['long']),
				'short' => $this->translator->trans($this->config['copy']['short']),
				'title' => $this->config['copy']['title']
			],
			'description' => null,
			'donate' => $this->config['donate'],
			'facebook' => [
				'og:type' => 'article',
				'og:site_name' => $title = $this->translator->trans($this->config['title']),
				'og:url' => $canonical,
				#'fb:admins' => $this->config['facebook']['admins'],
				'fb:app_id' => $this->config['facebook']['apps']
			],
			//XXX: TODO: only generate it when fb robot request the url ???
			'fbimage' => [
				'texts' => [
					$title => [
						'font' => 'irishgrover',
						'size' => 110
					]
				]
			],
			'icon' => $this->config['icon'],
			'keywords' => null,
			'locale' => str_replace('_', '-', $this->locale),
			'logo' => $this->config['logo'],
			'forms' => [],
			'root' => $this->router->generate($this->config['root']),
			'title' => [
				'page' => null,
				'section' => null,
				'site' => $title
			]
		];
	}

	/**
	 * The index page
	 *
	 * Display index
	 *
	 * @param Request $request The request instance
	 * @return Response The rendered view
	 */
	public function index(Request $request): Response {
		//Get roots
		$this->context['roots'] = $this->config['roots'];

		//Render template
		$response = $this->render('@RapsysTree/index.html.twig', $this->context);

		$response->setEtag(md5($response->getContent()));
		$response->setPublic();
		$response->isNotModified($request);

		//Return response
		return $response;
	}

	/**
	 * The directory page
	 *
	 * Display directory
	 *
	 * @param Request $request The request instance
	 * @param string $path The directory path
	 * @return Response The rendered view
	 */
	public function directory(Request $request, string $path): Response {
		header('Content-Type: text/plain');
		var_dump($path);
		exit;

		//Render template
		$response = $this->render('@RapsysTree/directory.html.twig', $this->context);

		$response->setEtag(md5($response->getContent()));
		$response->setPublic();
		$response->isNotModified($request);

		//Return response
		return $response;
	}

	/**
	 * The document page
	 *
	 * Display document
	 *
	 * @param Request $request The request instance
	 * @param string $path The directory path
	 * @return Response The rendered view
	 */
	public function document(Request $request, string $path): Response {
		//Render template
		$response = $this->render('@RapsysTree/document.html.twig', $this->context);

		$response->setEtag(md5($response->getContent()));
		$response->setPublic();
		$response->isNotModified($request);

		//Return response
		return $response;
	}

	/**
	 * Renders a view
	 *
	 * {@inheritdoc}
	 */
	protected function render(string $view, array $parameters = [], Response $response = null): Response {
		//Create response when null
		$response ??= new Response();

		//Without alternates
		if (count($parameters['alternates']) <= 1) {
			//Set routeParams
			$routeParams = $this->routeParams;

			//Iterate on locales excluding current one
			foreach($this->config['locales'] as $locale) {
				//With current locale
				if ($locale !== $this->locale) {
					//Set titles
					$titles = [];

					//Set route params locale
					$routeParams['_locale'] = $locale;

					//Iterate on other locales
					foreach(array_diff($this->config['locales'], [$locale]) as $other) {
						//Set other locale title
						$titles[$other] = $this->translator->trans($this->config['languages'][$locale], [], null, $other);
					}

					//Set locale locales context
					$parameters['alternates'][str_replace('_', '-', $locale)] = [
						'absolute' => $this->router->generate($this->route, $routeParams, UrlGeneratorInterface::ABSOLUTE_URL),
						'relative' => $this->router->generate($this->route, $routeParams),
						'title' => implode('/', $titles),
						'translated' => $this->translator->trans($this->config['languages'][$locale], [], null, $locale)
					];

					//Add shorter locale
					if (empty($parameters['alternates'][$shortCurrent = substr($locale, 0, 2)])) {
						//Set locale locales context
						$parameters['alternates'][$shortCurrent] = $parameters['alternates'][str_replace('_', '-', $locale)];
					}
				}
			}
		}

		//With canonical
		if (!empty($parameters['canonical'])) {
			//Set facebook url
			$parameters['facebook']['og:url'] = $parameters['canonical'];
		}

		//With empty facebook title and title
		if (empty($parameters['facebook']['og:title']) && !empty($parameters['title']['page'])) {
			//Set facebook title
			$parameters['facebook']['og:title'] = $parameters['title']['page'];
		}

		//With empty facebook description and description
		if (empty($parameters['facebook']['og:description']) && !empty($parameters['description'])) {
			//Set facebook description
			$parameters['facebook']['og:description'] = $parameters['description'];
		}

		//With locale
		if (!empty($this->locale)) {
			//Set facebook locale
			$parameters['facebook']['og:locale'] = $this->locale;

			//With alternates
			//XXX: locale change when fb_locale=xx_xx is provided is done in FacebookSubscriber
			//XXX: see https://stackoverflow.com/questions/20827882/in-open-graph-markup-whats-the-use-of-oglocalealternate-without-the-locati
			if (!empty($parameters['alternates'])) {
				//Iterate on alternates
				foreach($parameters['alternates'] as $lang => $alternate) {
					if (strlen($lang) == 5) {
						//Set facebook locale alternate
						$parameters['facebook']['og:locale:alternate'] = str_replace('-', '_', $lang);
					}
				}
			}
		}

		//Without facebook image defined and texts
		if (empty($parameters['facebook']['og:image']) && !empty($this->request) && !empty($parameters['fbimage']['texts']) && !empty($this->modified)) {
			//Get facebook image
			$parameters['facebook'] += $this->facebook->getImage($this->request->getPathInfo(), $parameters['fbimage']['texts'], $this->modified->getTimestamp());
		}

		//Call twig render method
		$content = $this->twig->render($view, $parameters);

		//Invalidate OK response on invalid form
		if (200 === $response->getStatusCode()) {
			foreach ($parameters as $v) {
				if ($v instanceof FormInterface && $v->isSubmitted() && !$v->isValid()) {
					$response->setStatusCode(422);
					break;
				}
			}
		}

		//Store content in response
		$response->setContent($content);

		//Return response
		return $response;
	}
}