<?php

declare(strict_types=1);

namespace Square\Models;

use stdClass;

/**
 * Represents a time period - either a single period or a repeating period.
 */
class CatalogTimePeriod implements \JsonSerializable
{
    /**
     * @var array
     */
    private $event = [];

    /**
     * Returns Event.
     * An iCalendar (RFC 5545) [event](https://tools.ietf.org/html/rfc5545#section-3.6.1), which
     * specifies the name, timing, duration and recurrence of this time period.
     *
     * Example:
     *
     * ```
     * DTSTART:20190707T180000
     * DURATION:P2H
     * RRULE:FREQ=WEEKLY;BYDAY=MO,WE,FR
     * ```
     *
     * Only `SUMMARY`, `DTSTART`, `DURATION` and `RRULE` fields are supported.
     * `DTSTART` must be in local (unzoned) time format. Note that while `BEGIN:VEVENT`
     * and `END:VEVENT` is not required in the request. The response will always
     * include them.
     */
    public function getEvent(): ?string
    {
        if (count($this->event) == 0) {
            return null;
        }
        return $this->event['value'];
    }

    /**
     * Sets Event.
     * An iCalendar (RFC 5545) [event](https://tools.ietf.org/html/rfc5545#section-3.6.1), which
     * specifies the name, timing, duration and recurrence of this time period.
     *
     * Example:
     *
     * ```
     * DTSTART:20190707T180000
     * DURATION:P2H
     * RRULE:FREQ=WEEKLY;BYDAY=MO,WE,FR
     * ```
     *
     * Only `SUMMARY`, `DTSTART`, `DURATION` and `RRULE` fields are supported.
     * `DTSTART` must be in local (unzoned) time format. Note that while `BEGIN:VEVENT`
     * and `END:VEVENT` is not required in the request. The response will always
     * include them.
     *
     * @maps event
     */
    public function setEvent(?string $event): void
    {
        $this->event['value'] = $event;
    }

    /**
     * Unsets Event.
     * An iCalendar (RFC 5545) [event](https://tools.ietf.org/html/rfc5545#section-3.6.1), which
     * specifies the name, timing, duration and recurrence of this time period.
     *
     * Example:
     *
     * ```
     * DTSTART:20190707T180000
     * DURATION:P2H
     * RRULE:FREQ=WEEKLY;BYDAY=MO,WE,FR
     * ```
     *
     * Only `SUMMARY`, `DTSTART`, `DURATION` and `RRULE` fields are supported.
     * `DTSTART` must be in local (unzoned) time format. Note that while `BEGIN:VEVENT`
     * and `END:VEVENT` is not required in the request. The response will always
     * include them.
     */
    public function unsetEvent(): void
    {
        $this->event = [];
    }

    /**
     * Encode this object to JSON
     *
     * @param bool $asArrayWhenEmpty Whether to serialize this model as an array whenever no fields
     *        are set. (default: false)
     *
     * @return array|stdClass
     */
    #[\ReturnTypeWillChange] // @phan-suppress-current-line PhanUndeclaredClassAttribute for (php < 8.1)
    public function jsonSerialize(bool $asArrayWhenEmpty = false)
    {
        $json = [];
        if (!empty($this->event)) {
            $json['event'] = $this->event['value'];
        }
        $json = array_filter($json, function ($val) {
            return $val !== null;
        });

        return (!$asArrayWhenEmpty && empty($json)) ? new stdClass() : $json;
    }
}
