<?php
/*
 * CVM is more free software. It is licensed under the WTFPL, which
 * allows you to do pretty much anything with it, without having to
 * ask permission. Commercial use is allowed, and no attribution is
 * required. We do politely request that you share your modifications
 * to benefit other developers, but you are under no enforced
 * obligation to do so :)
 * 
 * Please read the accompanying LICENSE document for the full WTFPL
 * licensing text.
 */
 
if(!isset($_CVM)) { die("Unauthorized."); }

class Node extends CPHPDatabaseRecordClass
{
	public $table_name = "nodes";
	public $fill_query = "SELECT * FROM nodes WHERE `Id` = '%d'";
	public $verify_query = "SELECT * FROM nodes WHERE `Id` = '%d'";
	
	public $prototype = array(
		'string' => array(
			'Name'			=> "Name",
			'Hostname'		=> "Hostname",
			'PhysicalLocation'	=> "PhysicalLocation",
			'PrivateKey'		=> "CustomPrivateKey",
			'PublicKey'		=> "CustomPublicKey",
			'User'			=> "User"
		),
		'numeric' => array(
			'Port'			=> "Port"
		),
		'boolean' => array(
			'HasCustomKey'		=> "HasCustomKey"
		)
	);
	
	public $ssh = null;
	
	protected function EventConstructed()
	{
		global $settings;
		
		$this->ssh = new SshConnector();
		
		$this->ssh->host = $this->sHostname;
		$this->ssh->port = $this->sPort;
		$this->ssh->user = $this->sUser;
		
		if($this->HasCustomKey === true)
		{
			$this->ssh->key = $this->sPrivateKey;
			$this->ssh->pubkey = $this->sPublicKey;
		}
		else
		{
			$this->ssh->key = $settings['master_privkey'];
			$this->ssh->pubkey = $settings['master_pubkey'];
		}
	}
	
	public function __get($name)
	{
		switch($name)
		{
			case "sRealHostname":
				return $this->GetHostname();
				break;
			case "sDiskFree":
				return $this->GetDiskFree();
				break;
			case "sDiskUsed":
				return $this->GetDiskUsed();
				break;
			default:
				return parent::__get($name);
				break;
		}
	}
	
	public function GetHostname()
	{
		return $this->ssh->RunCommandCached("hostname", true)->stdout;
	}
	
	public function GetDiskFree()
	{
		$disk = $this->GetDisk();
		return $disk['free'];
	}
	
	public function GetDiskUsed()
	{
		$disk = $this->GetDisk();
		return $disk['used'];
	}
	
	public function GetDisk()
	{
		$result = $this->ssh->RunCommandCached("df -l -x tmpfs", true);
		$lines = explode("\n", $result->stdout);
		array_shift($lines);
		
		$total_free = 0;
		$total_used = 0;
		$total_total = 0;
		
		foreach($lines as $disk)
		{
			$disk = trim($disk);
			
			if(!empty($disk))
			{
				$values = split_whitespace($disk);
				$total_free += (int)$values[3] / 1024;
				$total_used += (int)$values[2] / 1024;
				$total_total += ((int)$values[2] + (int)$values[3]) / 1024;
			}
		}
		
		return array(
			'free'	=> $total_free,
			'used'	=> $total_used,
			'total'	=> $total_total
		);
	}
}