<?php

namespace NoccyLabs\PulseAudio\Sink;

use NoccyLabs\PulseAudio\Helper\Pacmd;
use ArrayAccess;
use IteratorAggregate;
use ArrayIterator;
use Countable;

class SinkList implements ArrayAccess, IteratorAggregate, Countable
{
    protected $sinks = [];
    
    public function __construct()
    {
        $sinks = Pacmd::query("list-sinks");
        foreach ($sinks as $index=>$sink) {
            $this->sinks[] = new Sink($index, $sink);
        }
    }

    public function createSink($name)
    {

    }

    public function createRecorder($name)
    {

    }

    public function destroySink($id)
    {

    }

    public function getIterator()
    {
        return new ArrayIterator($this->sinks);
    }

    public function offsetGet($key)
    {
        if (!array_key_exist($key, $this->sinks)) {
            throw new InvalidArgumentException("No such sink: {$key}");
        }
        return $this->sinks[$key];
    }

    public function offsetSet($key, $value)
    {}

    public function offsetUnset($key)
    {}

    public function offsetExists($key)
    {
        return array_key_exists($key, $this->sinks);
    }

    public function count()
    {
        return count($this->sinks);
    }

}