<?php

namespace common\modules\event\manager;

use common\models\Event;
use common\modules\event\models\timetable\TimeTableMonth;
use common\modules\event\models\timetable\TimeTableMonthDay;
use common\modules\event\models\timetable\TimeTableMonthWeek;
use customerapi\models\available\EventInterval;
use DateTime;
use Exception;

class EventManager
{


    /**
     * @param EventInterval $interval
     * @return TimeTableMonth
     * @throws Exception
     */
    public function loadTimeTable($interval)
    {

        $timeTable = new TimeTableMonth();
        $timeTable->interval = $interval;

        /** @var DateTime[] $displayDates */
        $displayDates = $interval->getAllDisplayDates();

        $timeTable->weeks = [];

        /** @var DateTime $displayDate */
        foreach ($displayDates as $displayDate) {
            $timeTableMonthDay = new TimeTableMonthDay();
            $timeTableMonthDay->date = $displayDate;
            $timeTableMonthDay->active = $interval->isActive($displayDate);
            $timeTable->days[] = $timeTableMonthDay;

            $weekNumber = $displayDate->format('W');

            if (!isset($timeTable->weeks[$weekNumber])) {
                $week = new TimeTableMonthWeek();
                $week->weekNumber = $weekNumber;
                $timeTable->weeks[$weekNumber] = $week;
            }

            $weekDayName = strtolower($displayDate->format('l'));
            $timeTable->weeks[$weekNumber]->$weekDayName = $timeTableMonthDay;
        }

        // get events between active dates
        $query = Event::find();
        $query = $query->select(
            [
                '{{event}}.*',
//                'COUNT({{event_registration}}.id) AS reservationCount'
            ]);

        $events = $query
            ->innerJoinWith('trainer')
            ->innerJoinWith('eventType')
            ->innerJoinWith('room')
            ->joinWith('activeEventRegistrations')
            ->andWhere(['>=', 'event.start', $interval->firstActiveDate->getTimestamp()])
            ->andWhere(['<', 'event.start', (clone $interval->lastActiveDate)->modify('+1 day')->getTimestamp()])
            ->andWhere(['event.active' => '1'])
            ->orderBy([
                'event.start' => SORT_ASC
            ])
            ->all();

        // set events per day
        /** @var Event $event */
        foreach ($events as $event) {
            $eventDay = new DateTime();
            $eventDay->setTimestamp($event->start);
            $eventDay->setTime(0, 0);

            foreach ($timeTable->days as $date) {
                if ($date->date == $eventDay) {
                    $date->events[] = $event;
                    break;
                }
            }
        }
        return $timeTable;
    }

}