Duration.php

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<?php
 
namespace ILIAS\HTTP\Duration;
 
use ILIAS\HTTP\Duration\Increment\IncrementStrategy;
 
abstract class Duration
{
    protected const S_TO_US = 1_000_000;
 
    protected const MS_TO_US = 1_000;
 
    protected ?IncrementStrategy $increment = null;
    protected int $duration_in_ms;
 
    public function __construct(int $duration_in_ms)
    {
        $this->duration_in_ms = $duration_in_ms;
    }
 
    public function withIncrement(IncrementStrategy $increment) : self
    {
        $clone = clone $this;
        $clone->increment = $increment;
 
        return $clone;
    }
 
    public function increment() : self
    {
        if (null === $this->increment) {
            return $this;
        }
 
        $clone = clone $this;
        $clone->duration_in_ms = $clone->increment->increment($clone->duration_in_ms);
 
        return $clone;
    }
 
    public function withDuration(int $duration_in_ms) : self
    {
        $clone = clone $this;
        $clone->duration_in_ms = $duration_in_ms;
 
        return $clone;
    }
 
    public function getDuration() : int
    {
        return $this->duration_in_ms;
    }
}