<?php

declare(strict_types=1);

namespace Silex\Controller;

use DateTime;
use Silex\DI\DI;
use Silex\Http\HttpResponse;
use Silex\Model\Comment;
use Silex\Util\Pagination;
use Silex\Validation\CommentValidation;
use Silex\Validation\NewsValidation;

class VisitorController {

	private const PER_PAGE = 12;

    public function index(DI $di, array $params): HttpResponse
    {
        $errors = [];

        $gw = $di->getNewsGateway();
        $gwc = $di->getCommentGateway();
        $user = $di->getSecurity()->getCurrentUser();

        $page = intval($params['page'] ?? 1);
        $total = $gw->getCount();
        
        $nbPages = Pagination::getNbPages($total, self::PER_PAGE);
        if(!empty($_GET['dateDeb']) && !empty($_GET['dateFin']) && NewsValidation::isValidDate($_GET,$errors)) {
            $news = $gw->getLike($_GET['dateDeb'], $_GET['dateFin'], $page , self::PER_PAGE);
        } else {
            $news = $gw->getPaginatedRecentNews($page , self::PER_PAGE);
        }
        $nbComments = $gwc->getCommentNumber();
        if ($user !== null) {
            $nbCommentsByUser = $gwc->getCommentNumberFromUser($user->getId());
        } else {
            $nbCommentsByUser = 0;
        }
        return new HttpResponse(200, 'home', ['news' => $news, 'page' => $page, 'nbPages' => $nbPages, 'nbComments' => $nbComments, 'nbCommentsByUser' => $nbCommentsByUser, 'errors' => $errors]);
    }

    public function viewPost(DI $di, array $params): HttpResponse
    {
        $newsId = intval($params['id']);
        $news = $di->getNewsGateway()->getById($newsId);
        if ($news === null) {
            return new HttpResponse(404, 'errors', ['errors' => ['Unknown news']]);
        }
        if ($news->getSlug() !== $params['slug']) {
            HttpResponse::redirect($di->getRouter()->url($news->getSlugRedirect()));
        }
        $comments = $di->getCommentGateway()->getByNewsId($newsId);
        return new HttpResponse(200, 'newsView', ['news' => $news, 'comments' => $comments]);
    }

    public function comment(DI $di, array $params): HttpResponse
    {
        $newsId = intval($params['id']);
        $news = $di->getNewsGateway()->getById($newsId);
        if ($news === null) {
            return new HttpResponse(404, 'errors', ['errors' => ['Unknown news']]);
        }
        $author = $di->getSecurity()->getCurrentUser();
        $errors = [];
        if (!CommentValidation::isValidComment($_POST, $author === null, $errors)) {
            return new HttpResponse(400, 'errors', ['errors' => $errors]);
        }
        $comment = new Comment(-1, $newsId, new DateTime(), $_POST['content']);
        if ($author !== null) {
            $comment->setAuthor($author);
        } else {
            $_SESSION['previous_name'] = $_POST['name'];
            $comment->setAuthorName($_POST['name']);
        }
        $di->getCommentGateway()->insert($comment);
        HttpResponse::redirect($di->getRouter()->url($news->getSlugRedirect()));
        exit();
    }
}