<?php
/**
 * contentbox.php - Calender Contentbox controller
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * @author      Florian Bieringer <florian.bieringer@uni-passau.de>
 * @license     http://www.gnu.org/licenses/gpl-2.0.html GPL version 2
 * @category    Stud.IP
 * @package     calender
 */
class Calendar_ContentboxController extends StudipController
{
    /**
     * Widget controller to produce the formally known show_dates()
     *
     * @param String $range_id range id (or array of range ids) of the news to get displayed
     */
    public function display_action($range_id, $timespan = 604800, $start = null)
    {
        $this->admin = false;
        $this->single = false;
        $this->userRange = false;
        $this->termine = [];

        // Fetch time if needed
        $this->start = $start ?: strtotime('today');
        $this->timespan = $timespan;

        // To array fallback of $range_id
        if (!is_array($range_id)) {
            $this->single = true;
            $range_id = [$range_id];
        }

        foreach ($range_id as $id) {
            switch (get_object_type($id, ['user', 'sem'])) {
                case 'user':
                    $this->parseUser($id);
                    $this->userRange = true;
                    break;
                case 'sem':
                    $this->parseSeminar($id);
                    break;
            }
        }

        // Check permission to edit
        if ($this->single) {
            $this->admin = $range_id[0] === $GLOBALS['user']->id
                || (
                    get_object_type($range_id[0], ['sem']) === 'sem'
                    && $GLOBALS['perm']->have_studip_perm('tutor', $range_id[0])
                );
            // Set range_id
            $this->range_id = $range_id[0];
        }

        // Forge title
        if (!empty($this->termine)) {
            $this->title = sprintf(
                _('Termine für die Zeit vom %s bis zum %s'),
                strftime('%d. %B %Y', $this->start),
                strftime('%d. %B %Y', $this->start + $this->timespan)
            );
        } else {
            $this->title = _('Termine');
        }

        // Check out if we are on a profile
        if ($this->admin) {
            $this->isProfile = $this->single && $this->userRange;
        }
    }

    private function parseSeminar($id)
    {
        $course = Course::find($id);
        $dates = $course->getDatesWithExdates()->findBy('end_time', [$this->start, $this->start + $this->timespan], '><');
        $this->termine = [];
        foreach ($dates as $courseDate) {
            // Build info
            $info = [];
            if (count($courseDate->dozenten) > 0) {
                $info[_('Durchführende Lehrende')] = implode(', ', $courseDate->dozenten->getFullname());
            }
            if (count($courseDate->statusgruppen) > 0) {
                $info[_('Beteiligte Gruppen')] = implode(', ', $courseDate->statusgruppen->getValue('name'));
            }

            // Store for view
            $description = '';
            if ($courseDate instanceof CourseExDate) {
                $description = $courseDate->content;
            } elseif ($courseDate->cycle instanceof SeminarCycleDate) {
                $description = $courseDate->cycle->description;
            }
            $this->termine[] = [
                'id'          => $courseDate->id,
                'chdate'      => $courseDate->chdate,
                'title'       => $courseDate->getFullname() . (count($courseDate->topics) > 0 ? ', ' . implode(', ', $courseDate->topics->getValue('title')) : ''),
                'description' => $description,
                'topics'      => $courseDate->topics->toArray('title description'),
                'room'        => $courseDate->getRoomName(),
                'info'        => $info
            ];
        }
    }

    private function parseUser($id)
    {
        $restrictions = $GLOBALS['user']->id === $id ? [] : ['CLASS' => 'PUBLIC'];
        $events = SingleCalendar::getEventList(
            $id,
            $this->start,
            $this->start + $this->timespan,
            null,
            $restrictions
        );
        $this->termine = [];
        // Prepare termine
        foreach ($events as $termin) {
            // Exclude events that begin after the given time range
            if ($termin->getStart() > $this->start + $this->timespan) {
                continue;
            }

            // Adjust title
            if (date('Ymd', $termin->getStart()) == date('Ymd')) {
                $title = _('Heute') . date(', H:i', $termin->getStart());
            } else {
                $title = mb_substr(strftime('%a', $termin->getStart()), 0, 2);
                $title .= date('. d.m.Y, H:i', $termin->getStart());
            }

            if ($termin->getStart() < $termin->getEnd()) {
                if (date('Ymd', $termin->getStart()) < date('Ymd', $termin->getEnd())) {
                    $title .= ' - ' . mb_substr(strftime('%a', $termin->getEnd()), 0, 2);
                    $title .= date('. d.m.Y, H:i', $termin->getEnd());
                } else {
                    $title .= ' - ' . date('H:i', $termin->getEnd());
                }
            }

            if ($termin->getTitle()) {
                $tmp_titel = mila($termin->getTitle()); //Beschneiden des Titels
                $title .= ', ' . $tmp_titel;
            }

            // Store for view
            $this->termine[] = [
                'id'          => $termin->id,
                'type'        => get_class($termin),
                'range_id'    => $termin->range_id,
                'event_id'    => $termin->event_id,
                'chdate'      => $termin->chdate,
                'title'       => $title,
                'description' => $termin->getDescription(),
                'room'        => $termin->getLocation(),
                'info'        => [
                    _('Kategorie')    => $termin->toStringCategories(),
                    _('Priorität')    => $termin->toStringPriority(),
                    _('Sichtbarkeit') => $termin->toStringAccessibility(),
                    _('Wiederholung') => $termin->toStringRecurrence()]
            ];
        }
    }
}