<?php

abstract class ScriptBuilderBase
{

	private $lblId = 0;

	protected $serverIp;

	protected $platform = '';

	protected $clientIp;

	/**
	 * @var bool Running iPXE has slx-extensions
	 */
	protected $hasExtension = false;

	public function hasExtensions()
	{
		return $this->hasExtension;
	}

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

	public function getLabel()
	{
		return 'b' . mt_rand(100, 999) . 'x' . (++$this->lblId);
	}

	public function __construct($platform = null, $serverIp = null, $slxExtensions = null)
	{
		$this->clientIp = $_SERVER['REMOTE_ADDR'];
		if (substr($this->clientIp, 0, 7) === '::ffff:') {
			$this->clientIp = substr($this->clientIp, 7);
		}
		$this->serverIp = $serverIp ?? $_SERVER['SERVER_ADDR'] ?? Property::getServerIp();
		$this->platform = $platform ?? Request::any('platform', false, 'string');
		if ($this->platform !== false) {
			$this->platform = strtoupper($this->platform);
		}
		Header('X-Popo: ' . $this->platform);
		if ($this->platform !== 'EFI' && $this->platform !== 'PCBIOS') {
			$this->platform = '';
		}
		$this->hasExtension = $slxExtensions ?? (bool)Request::any('slx-extensions', false, 'int');
	}

	/**
	 * Output given string (script) to client, in a suitable encoding, headers, etc.
	 * @param string $string
	 */
	public abstract function output($string);

	public abstract function getMenu($menuId);

	public abstract function getMenuEntry($menuEntryId);

	public abstract function getSpecial($special);

	public abstract function fallback();

	/**
	 * @param IPxeMenu|null $menu
	 * @return string
	 */
	public abstract function menuToScript($menu);

	/**
	 * Pass EITHER only $agnostic, OR $bios and/or $efi
	 * If $agnostic is given, it should be used unconditionally,
	 * and $bios/$efi should be ignored.
	 * @param ExecData $agnostic
	 * @param ExecData $bios
	 * @param ExecData $efi
	 * @return string
	 */
	public abstract function execDataToScript($agnostic, $bios, $efi);

}