<?php

namespace Leantime\Domain\Wiki\Controllers;

use Illuminate\Contracts\Container\BindingResolutionException;
use Leantime\Core\Auth\Permissions\RequiresPermission;
use Leantime\Core\Controller\Controller;
use Leantime\Core\Controller\Frontcontroller;
use Leantime\Domain\Comments\Services\Comments as CommentService;
use Leantime\Domain\Tickets\Services\Tickets as TicketService;
use Leantime\Domain\Wiki\Permissions\WikiPermissions;
use Leantime\Domain\Wiki\Services\Wiki as WikiService;
use Symfony\Component\HttpFoundation\Response;

class Show extends Controller
{
    private WikiService $wikiService;

    private CommentService $commentService;

    private TicketService $ticketService;

    public function init(WikiService $wikiService, CommentService $commentService, TicketService $ticketService): void
    {
        $this->wikiService = $wikiService;
        $this->commentService = $commentService;
        $this->ticketService = $ticketService;
    }

    /**
     * @throws BindingResolutionException
     */
    #[RequiresPermission(WikiPermissions::VIEW)]
    public function get(array $params): Response
    {

        $currentArticle = '';
        $wikiHeadlines = [];

        // Get all project wikis, creates one if none exists
        $wikis = $this->wikiService->getAllProjectWikis(session('currentProject'));

        // Special case: Setting wiki (active action), set wiki, headlines and current Article
        if (isset($_GET['setWiki'])) {

            $wikiId = (int) $_GET['setWiki'];

            return $this->setWikiAndRedirect($wikiId);

        }

        if (isset($params['id'])) {

            $currentArticle = $this->wikiService->setCurrentArticle($params['id'], session('usersettings.id'));

            if ($currentArticle === false) {
                $this->wikiService->clearWikiCache();

                return Frontcontroller::redirect(BASE_URL.'/errors/error404');
            }

        } elseif (
            session()->exists('lastArticle') &&
            session('lastArticle') != '' &&
            ! isset($params['id'])) {

            $currentArticle = $this->wikiService->setCurrentArticle(session('lastArticle'), session('usersettings.id'));

            if ($currentArticle) {
                return Frontcontroller::redirect(BASE_URL.'/wiki/show/'.$currentArticle->id);
            }

            // If neither session is set nor the params id we are coming in fresh. Grab the article from wiki if there is one
        } else {

            // False is okay, just an empty wiki
            $success = $this->wikiService->setCurrentWiki(session('currentWiki'));
            if ($success === false) {

                // Try getting the first wiki
                $success = $this->wikiService->setCurrentWiki($wikis[0]->id);

                if ($success === false) {
                    $this->wikiService->clearWikiCache();

                    return Frontcontroller::redirect(BASE_URL.'/errors/error404');
                }
            }

            $defaultArticle = $this->wikiService->getDefaultArticleForWiki(session('currentWiki'), session('userdata.id'));
            if ($defaultArticle !== false) {
                session(['lastArticle' => $defaultArticle->id]);

                return Frontcontroller::redirect(BASE_URL.'/wiki/show/'.$defaultArticle->id);
            }
            // If not it's really just empty.

        }

        // At this point we should have a currentWiki. Even if non exist
        $wikiHeadlines = $this->wikiService->getAllWikiHeadlines(session('currentWiki'), session('userdata.id'));
        if (! $wikiHeadlines) {
            $wikiHeadlines = [];
        }

        // Get the actual wiki content
        $currentWiki = $this->wikiService->getWiki(session('currentWiki'));
        if (empty($currentWiki)) {
            $this->wikiService->clearWikiCache();

            // If we can't find a current wiki at this point something went wrong
            return Frontcontroller::redirect(BASE_URL.'/errors/error404');
        }

        // Delete comment
        if (isset($_GET['delComment']) === true) {
            $commentId = (int) ($_GET['delComment']);

            $this->commentService->deleteComment($commentId);

            $this->tpl->setNotification($this->language->__('notifications.comment_deleted'), 'success', 'wikicomment_deleted');
        }

        if (isset($currentArticle->id)) {
            $comment = $this->commentService->getComments('article', $currentArticle->id, 0);
        } else {
            $comment = [];
        }

        // Get all milestones for the project
        $allProjectMilestones = $this->ticketService->getAllMilestones([
            'sprint' => '',
            'type' => 'milestone',
            'currentProject' => session('currentProject'),
        ]);

        $this->tpl->assign('comments', $comment);
        $this->tpl->assign('numComments', count($comment));
        $this->tpl->assign('currentArticle', $currentArticle);
        $this->tpl->assign('currentWiki', $currentWiki);
        $this->tpl->assign('wikis', $wikis);
        $this->tpl->assign('wikiHeadlines', $wikiHeadlines);
        $this->tpl->assign('milestones', $allProjectMilestones);

        return $this->tpl->display('wiki.show');
    }

    /**
     * @throws BindingResolutionException
     */
    #[RequiresPermission(WikiPermissions::VIEW)]
    public function post(array $params): Response
    {

        if (isset($_GET['id']) === true) {
            $id = (int) ($_GET['id']);
            $currentArticle = $this->wikiService->getArticle($id, session('currentProject'));

            if (isset($_POST['comment']) === true) {
                if ($this->commentService->addComment($_POST, 'article', $id, $currentArticle)) {
                    $this->tpl->setNotification(
                        $this->language->__('notifications.comment_create_success'),
                        'success',
                        'wikicomment_created'
                    );
                } else {
                    $this->tpl->setNotification($this->language->__('notifications.comment_create_error'), 'error');
                }
            }

            return Frontcontroller::redirect(BASE_URL.'/wiki/show/'.$id);
        }

        return Frontcontroller::redirect(BASE_URL.'/wiki/show/');
    }

    protected function setWikiAndRedirect($id): Response
    {

        $this->wikiService->clearWikiCache();

        $success = $this->wikiService->setCurrentWiki($id);

        if ($success === false) {
            $this->wikiService->clearWikiCache();

            return Frontcontroller::redirect(BASE_URL.'/errors/error404');
        }

        $defaultArticle = $this->wikiService->getDefaultArticleForWiki($id, session('userdata.id'));
        if ($defaultArticle !== false) {
            session(['lastArticle' => $defaultArticle->id]);

            return Frontcontroller::redirect(BASE_URL.'/wiki/show/'.$defaultArticle->id);
        }

        return Frontcontroller::redirect(BASE_URL.'/wiki/show/');

    }
}