<?php

return function($kirby) {
  $orderedSeason = new Pages();

  foreach ($kirby->collection('current-season')->children() as $event) {
    $sessions = $event->isMapadoEvent() == 'true' ? $event->remoteSessions()->toStructure() : $event->sessions()->toStructure();
    $sessionDates = $sessions->map(function($session) {
      return $session->date()->value();
    })->data;

    $orderedSeason->add($event);
  }

  $endOfProgramEvents = $orderedSeason->filter(function ($event) {
    $sessions = $event->isMapadoEvent() == 'true' ? $event->remoteSessions()->toStructure() : $event->sessions()->toStructure();
    $sessionDates = $sessions->map(function($session) {
      return $session->date()->value();
    })->data;

    return empty($sessionDates) || $event->status() === 'unlisted';
  });

  $normalEvents = $orderedSeason->filter(function ($event) use ($endOfProgramEvents) {
    return $event->status() === 'listed' && !$endOfProgramEvents->has($event);
  });

  $normalEvents = $normalEvents->sortBy(function ($event) {
    $sessions = $event->isMapadoEvent() == 'true' ? $event->remoteSessions()->toStructure() : $event->sessions()->toStructure();
    $sessionDates = $sessions->map(function($session) {
      return $session->date()->value();
    })->data;

    return !empty($sessionDates) ? min($sessionDates) : PHP_INT_MAX;
  });

  $orderedSeason = $normalEvents->merge($endOfProgramEvents);

  return $orderedSeason;
};