<?php

/* * ********************************************************************
 * ProxmoxVPS product developed. (2015-07-24)
 * *
 *
 *  CREATED BY MODULESGARDEN       ->       http://modulesgarden.com
 *  CONTACT                        ->       contact@modulesgarden.com
 *
 *
 * This software is furnished under a license and may be used and copied
 * only  in  accordance  with  the  terms  of such  license and with the
 * inclusion of the above copyright notice.  This software  or any other
 * copies thereof may not be provided or otherwise made available to any
 * other person.  No title to and  ownership of the  software is  hereby
 * transferred.
 *
 *
 * ******************************************************************** */
/**
 * @author Pawel Kopec <pawelk@modulesgarden.com>
 */

namespace MGProvision\Proxmox\v2;

class Api extends AbstractApi
{
    protected $version;

    /**
     *
     * @var Api
     */
    private static $instance;
    private $responsePaser;
    const AUTH_COOKIE = 'PVEAuthCookie';

    public function __construct($pve_hostname, $pve_username, $pve_realm = "pam", $pve_password, $login=true)
    {


        parent::__construct($pve_hostname, $pve_username, $pve_realm, $pve_password);

        $this->validate();
        if( $pve_realm != "PVEAPIToken" && $login){
            $this->login();
        }
    }

    public function setInstance()
    {
        $this->validate();
        self::$instance = $this;
    }

    /**
     * 
     * @return Api
     */
    public static function whmcsFactory($params)
    {

        $host           = $params['serverip'] ? $params['serverip'] : $params['serverhostname'];
        return self::$instance = new self($host, $params['serverusername'], $params['serveraccesshash'], $params['serverpassword']);
    }

    public static function getInstance()
    {

        if (!empty(self::$instance))
            return self::$instance;

        throw new ProxmoxApiException("API instance is not defined.");
    }

    private function validate()
    {

        if (empty($this->pve_hostname))
            throw new ProxmoxApiException("Server fields 'Hostname' or 'IP Address' is empty");

        if (empty($this->pve_username))
            throw new ProxmoxApiException("Server field 'Username' is empty");

        if (empty($this->pve_password))
            throw new ProxmoxApiException("Server field 'Password' is empty");

        if (empty($this->pve_realm))
            throw new ProxmoxApiException("Server field 'Authentication' is empty");

        if (gethostbyname($this->pve_hostname) == $this->pve_hostname && !filter_var($this->pve_hostname, FILTER_VALIDATE_IP))
        {
            throw new ProxmoxApiException(sprintf("Server Hostname '%s' is invalid", $this->pve_hostname));
        }

        if (!is_numeric($this->port))
            throw new ProxmoxApiException(sprintf("Server port '%s' is not valid", $this->port));
    }

    /**
     * FUNCTION procesRequest
     * Catch bug form API
     * @param array $response
     * @return string|boolean
     * @throws Exception
     */
    public function processRequest($response)
    {

        if (is_string($response))
        {
            if (is_object($this->responsePaser) && method_exists($this->responsePaser, "parseResponse"))
                $this->responsePaser->parseResponse($response);
            return $response;
        } elseif (isset($response['errors']))
        {

            $err = null;
            foreach ($response['errors'] as $param => $msg)
            {
                $err .= (is_numeric($param) ? '' : $param . ' - ') . ucfirst(trim($msg)) . ' ';
            }
            if ($err)
            {
                $err = ucfirst($err);
                if (is_object($this->responsePaser) && method_exists($this->responsePaser, "parseError"))
                    $this->responsePaser->parseError($err, $this->httpCode);

                throw new ProxmoxApiException($err, $this->httpCode);
            }
            return false;
        }
        else if (isset($response['data']['result']['error']['desc']) && $response['data']['result']['error']['desc']){
            throw new ProxmoxApiException($response['data']['result']['error']['desc'], 0);
        }
        else if ($response === null)
        {
            return true;
        }
        else
        {
            return $response;
        }
    }

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

    function getResponsePaser()
    {
        return $this->responsePaser;
    }

    function setResponsePaser($responsePaser)
    {
        $this->responsePaser = $responsePaser;
    }

    public function getVersion()
    {

        if (empty($this->version))
        {
            $info          = $this->get('/version');
            $this->version = $info ['version'];
        }
        return $this->version;
    }

    public function isProxmox4()
    {

        return version_compare($this->getVersion(), "4.0", '>=');
    }

    /**
     * @return array
     */
    public function getAuthCookieAsArray(){
        if(!$this->getLoginTicket()['ticket']){
            throw  new \InvalidArgumentException("Auth Cookie is empty");
        }
        return [self::AUTH_COOKIE => $this->getLoginTicket()['ticket']];
    }
}