propertycreator.php

<?php
 
 
namespace Bitrix\Calendar\ICal\Basic;
 
 
class PropertyCreator
{
    private $property;
 
    public function __construct(PropertyType $property)
    {
        $this->property = $property;
    }
 
    public function build(): array
    {
        $parameters = $this->resolveParameters();
 
        $value = $this->property->getValue();
 
        return array_map(function (string $name) use ($value, $parameters)
        {
            if ($value === '' && $parameters === '')
            {
                return "{$name}:";
            }
 
            if ($value === '')
            {
                if ($name === 'RRULE')
                {
                    $parameters = substr_replace($parameters, ':',0, 1);
                }
 
                return "{$name}{$parameters}";
            }
 
            return "{$name}{$parameters}:{$value}";
        }, $this->property->getNames());
    }
 
    private function resolveParameters(): string
    {
        $parameters = '';
 
        foreach ($this->property->getParameters() as $parameter)
        {
            $name = $parameter->getName();
            $value = $parameter->getValue();
 
            $parameters .= ";{$name}={$value}";
        }
 
        return $parameters;
    }
}