alert.php

<?php
 
 
namespace Bitrix\Calendar\ICal\Builder;
 
use Bitrix\Main\Type\Date;
 
class Alert
{
    private const TRIGGER_START = 'trigger_start';
    private const TRIGGER_END = 'trigger_end';
    private const TRIGGER_DATE = 'trigger_date';
    private $triggerDate;
    private $triggerInterval;
    private $triggerMode = self::TRIGGER_DATE;
    private $message;
 
    public static function date(Date $date, string $description = null): Alert
    {
        return static::getInstance($description)->triggerDate($date);
    }
 
    public static function minutesBeforeStart(int $minutes, string $description = null): Alert
    {
        $interval = new \DateInterval("PT{$minutes}M");
        $interval->invert = 1;
 
        return static::getInstance($description)->triggerAtStart($interval);
    }
 
    public static function minutesAfterStart(int $min, string $description = null): Alert
    {
        return static::getInstance($description)->triggerAtStart(new \DateInterval("PT{$min}M"));
    }
 
    public static function minutesBeforeEnd(int $min, string $description = null): Alert
    {
        $interval = new \DateInterval("PT{$min}M");
        $interval->invert = 1;
 
        return static::getInstance($description)->triggerAtEnd($interval);
    }
 
    public static function minutesAfterEnd(int $min, string $description = null): Alert
    {
        return static::getInstance($description)->triggerAtEnd(new \DateInterval("PT{$min}M"));
    }
 
    private static function getInstance(array $reminds = [], $description = ''): Alert
    {
        return new self($reminds, $description);
    }
 
    public function __construct(array $reminds = [], $description = '')
    {
        $this->message = $reminds;
        $this->message = $description;
    }
 
    public function getType(): string
    {
        return 'VALARM';
    }
 
    public function getRequiredProperties(): array
    {
        return [
            'ACTION',
            'TRIGGER',
            'DESCRIPTION',
        ];
    }
 
    public function message(string $message): Alert
    {
        $this->message = $message;
 
        return $this;
    }
 
    public function triggerDate(Date $triggerAt): Alert
    {
        $this->triggerMode = self::TRIGGER_DATE;
        $this->triggerDate = $triggerAt;
 
        return $this;
    }
 
    public function triggerAtStart(\DateInterval $interval): Alert
    {
        $this->triggerMode = self::TRIGGER_START;
        $this->triggerInterval = $interval;
 
        return $this;
    }
 
    public function triggerAtEnd(\DateInterval $interval): Alert
    {
        $this->triggerMode = self::TRIGGER_END;
        $this->triggerInterval = $interval;
 
        return $this;
    }
 
    protected function setContent(): Content
    {
        return Content::getInstance($this->getType())
            ->textProperty('ACTION', 'DISPLAY')
            ->textProperty('DESCRIPTION', $this->message)
            ->property($this->resolveTriggerProperty());
    }
 
    private function resolveTriggerProperty()
    {
        if ($this->triggerMode === self::TRIGGER_DATE) {
            return DateTimePropertyType::getInstance(
                'TRIGGER',
                $this->triggerDate,
                true
            )->addParameter(new Parameter('VALUE', 'DATE-TIME'));
        }
 
        $property = LengthPropertyType::getInstance('TRIGGER', $this->triggerInterval);
 
        if ($this->triggerMode === self::TRIGGER_END) {
            return $property->addParameter(new Parameter('RELATED', 'END'));
        }
 
        return $property;
    }
}