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<?php

namespace SAREhub\Commons\Misc;


class PackFormat
{

    protected $format;
    protected $bigEndian;
    protected $bytes;

    public function __construct($format, $bigEndian, $bytes)
    {
        $this->format = $format;
        $this->bigEndian = $bigEndian;
        $this->bytes = $bytes;
    }

    /**
     * @return PackFormat
     */
    public static function uint8()
    {
        return new self('C', true, 1);
    }

    /**
     * @param bool $bigEndian
     * @return PackFormat
     */
    public static function uint16($bigEndian = true)
    {
        return new self($bigEndian ? 'n' : 'v', $bigEndian, 2);
    }

    /**
     * @param bool $bigEndian
     * @return PackFormat
     */
    public static function uint32($bigEndian = true)
    {
        return new self($bigEndian ? 'N' : 'V', $bigEndian, 4);
    }

    public static function uint64($bigEndian = true)
    {
        return new self($bigEndian ? 'J' : 'P', $bigEndian, 8);
    }

    /**
     * @return string
     */
    public function getFormat()
    {
        return $this->format;
    }

    /**
     * @return bool
     */
    public function isBigEndian()
    {
        return (bool)$this->bigEndian;
    }

    /**
     * @return int
     */
    public function getBytes()
    {
        return $this->bytes;
    }
}