<?php

function sortByMonth($sessions) {
  $months = array(
    'janvier', 'février', 'mars', 'avril', 'mai', 'juin',
    'juillet', 'août', 'septembre', 'octobre', 'novembre', 'décembre'
  );

  $orderedSessions = array();

  foreach ($months as $month) {
    $orderedSessions[$month] = array();
  }

  foreach ($sessions as $item) {
    $month = date('F', strtotime($item['date']));
    $month = str_replace(
        array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'),
        $months,
        $month
    );
    $orderedSessions[$month][] = $item;
  }

  return $orderedSessions;
}

function createArraySession($event, $session) {
  $isMapadoEvent = $event->isMapadoEvent() == 'true';
  $arraySession = $session->toArray();
  
  $arraySession['title'] = $event->title()->value();
  $arraySession['authors'] = $event->authors();
  $arraySession['place'] = $event->place();
  $arraySession['public'] = $event->public();
  $arraySession['event-url'] = $event->url();
  $arraySession['duration'] = $isMapadoEvent ? $event->remoteDuration() : $event->duration();
  $arraySession['ticketingUrl'] = $isMapadoEvent ? $session->ticketingUrl() : false;
  $arraySession['bookableStock'] = $isMapadoEvent ? $session->bookableStock()->value() : 'free';
  $arraySession['color'] = $event->color();

  return $arraySession;

}

return function($page) {
  $currentSeason = $page->children()->first();
  $today = date('Ymd');

  $previousEvents = new Pages();
  $nextEvents = new Pages();

  $currentSeasonSessions = [];
  $previousSeasons = $page->children()->without($currentSeason);

  foreach ($currentSeason->children() as $event) {
    $sessions = $event->isMapadoEvent() == 'true' ? $event->remoteSessions() : $event->sessions();

    $isStillShowing = false;

    foreach ($sessions->toStructure() as $session) {
      $arraySession = createArraySession($event, $session);
      $currentSeasonSessions[] = $arraySession;
      $sessionDate = str_replace('-', '', $session->date()->toDate('YMMdd'));

      if ($sessionDate >= $today) {
        $isStillShowing = true;
      }
    }

    if ($isStillShowing) {
      $nextEvents->add($event);
    } else {
      $previousEvents->add($event);
    }
  }

  return [
    'previousEvents' => $previousEvents,
    'nextEvents' => $nextEvents,
    'currentSeasonSessions' => sortByMonth($currentSeasonSessions),
    'previousSeasons' => $previousSeasons,
  ];
};