<?php

class MenuEntry
{
	/**
	 * @var int id of entry, used for pw
	 */
	public $menuentryid;
	/**
	 * @var false|string key code as expected by iPXE
	 */
	public $hotkey;
	/**
	 * @var string
	 */
	public $title;
	/**
	 * @var bool
	 */
	public $hidden;
	/**
	 * @var bool
	 */
	public $gap;
	/**
	 * @var int
	 */
	public $sortval;
	/**
	 * @var ?BootEntry
	 */
	public $bootEntry = null;

	public $plainpass = null;

	public $md5pass = null;

	public static function get(int $menuEntryId): ?MenuEntry
	{
		$row = Database::queryFirst("SELECT e.menuentryid, e.entryid, e.refmenuid, e.hotkey, e.title,
       	e.hidden, e.sortval, e.plainpass, e.md5pass, b.module, b.data AS bootentry, b.title AS betitle
			FROM serversetup_menuentry e
			LEFT JOIN serversetup_bootentry b USING (entryid)
			WHERE e.menuentryid = :id", ['id' => $menuEntryId]);
		if ($row === false)
			return null;
		return new MenuEntry($row);
	}

	/**
	 * MenuEntry constructor.
	 *
	 * @param array $row row from database
	 */
	public function __construct(array $row)
	{
		if (empty($row['title']) && !empty($row['betitle'])) {
			$row['title'] = $row['betitle'];
		}
		foreach ($row as $key => $value) {
			if (property_exists($this, $key)) {
				$this->{$key} = $value;
			}
		}
		$this->hotkey = self::getKeyCode($row['hotkey'] ?? '');
		if (!empty($row['bootentry']) && $row['module'] !== null) {
			$this->bootEntry = BootEntry::fromJson($row['module'], $row['bootentry']);
		} elseif (isset($row['refmenuid'])) {
			$this->bootEntry = BootEntry::forMenu($row['refmenuid']);
		}
		$this->gap = (array_key_exists('entryid', $row) && $row['entryid'] === null && $row['refmenuid'] === null);
		settype($this->hidden, 'bool');
		settype($this->gap, 'bool');
		settype($this->sortval, 'int');
		settype($this->menuentryid, 'int');
	}

	public function getBootEntryScript(ScriptBuilderBase $builder): string
	{
		if ($this->bootEntry === null)
			return '';
		return $this->bootEntry->toScript($builder);
	}

	public function menuEntryId(): int
	{
		return $this->menuentryid;
	}

	public function title(): string
	{
		return $this->title;
	}

	public function internalId(): string
	{
		if ($this->bootEntry === null)
			return '';
		return $this->bootEntry->internalId();
	}

	/*
	 *
	 */

	private static function getKeyArray()
	{
		static $data = false;
		if ($data === false) {
			$data = [
				'F5' => 0x107e,
				'F6' => 0x127e,
				'F7' => 0x137e,
				'F8' => 0x147e,
				'F9' => 0x157e,
				'F10' => 0x167e,
				'F11' => 0x187e,
				'F12' => 0x197e,
			];
			for ($i = 1; $i <= 26; ++$i) {
				$letter = chr(0x40 + $i);
				$data['SHIFT_' . $letter] = 0x40 + $i;
				if ($letter !== 'C') {
					$data['CTRL_' . $letter] = $i;
				}
				$data[$letter] = 0x60 + $i;
			}
			for ($i = 0; $i <= 9; ++$i) {
				$data[chr(0x30 + $i)] = 0x30 + $i;
			}
			asort($data, SORT_NUMERIC);
		}
		return $data;
	}

	/**
	 * Get all the known/supported keys, usable for menu items.
	 *
	 * @return string[] list of known key names
	 */
	public static function getKeyList(): array
	{
		return array_keys(self::getKeyArray());
	}

	/**
	 * Get the key code ipxe expects for the given named
	 * key. Returns false if the key name is unknown.
	 *
	 * @return false|string Key code as hex string, or false if not found
	 */
	public static function getKeyCode(string $keyName)
	{
		$data = self::getKeyArray();
		if (isset($data[$keyName]))
			return '0x' . dechex($data[$keyName]);
		return false;
	}

	/**
	 * @param string $keyName desired key name
	 * @return string $keyName if it's known, empty string otherwise
	 */
	public static function filterKeyName(string $keyName): string
	{
		$data = self::getKeyArray();
		if (isset($data[$keyName]))
			return $keyName;
		return '';
	}

}