<?php
/**
 * The model file of zahost module of ZenTaoPMS.
 *
 * @copyright   Copyright 2009-2023 禅道软件（青岛）有限公司(ZenTao Software (Qingdao) Co., Ltd. www.cnezsoft.com)
 * @license     ZPL(http://zpl.pub/page/zplv12.html) or AGPL(https://www.gnu.org/licenses/agpl-3.0.en.html)
 * @author      Wang Jianhua <wangjiahua@easycorp.ltd>
 * @package     zahost
 * @version     $Id$
 * @link        https://www.zentao.net
 */
class zahostModel extends model
{
    /**
     * 根据 ID 获取宿主机。
     * Get host by id.
     *
     * @param  int    $hostID
     * @access public
     * @return object
     */
    public function getByID($hostID)
    {
        $host = $this->dao->select('*, id AS hostID')->from(TABLE_ZAHOST)->where('id')->eq($hostID)->fetch();
        if(!$host) return false;

        if(empty($host->heartbeat)) $host->heartbeat = '';
        if(time() - strtotime($host->heartbeat) > 60 && $host->status == 'online') $host->status = 'offline';

        return $host;
    }

    /**
     * 获取宿主机的键值对。
     * Get host pairs.
     *
     * @access public
     * @return array
     */
    public function getPairs()
    {
        return $this->dao->select('id, name')->from(TABLE_ZAHOST)->where('deleted')->eq('0')->andWhere('type')->eq('zahost')->orderBy('`group`')->fetchPairs();
    }

    /**
     * 获取宿主机的列表。
     * Get host list.
     *
     * @param  string $browseType
     * @param  int    $param
     * @param  string $orderBy
     * @param  object $pager
     * @access public
     * @return array
     */
    public function getList($browseType = 'all', $param = 0, $orderBy = 'id_desc', $pager = null)
    {
        $query = '';
        if($browseType == 'bysearch')
        {
            /* Concatenate the conditions for the query. */
            if($this->session->zahostQuery == false) $this->session->set('zahostQuery', ' 1 = 1');
            if($param)
            {
                $this->session->set('zahostQuery', ' 1 = 1');

                $query = $this->loadModel('search')->getQuery($param);
                if($query)
                {
                    $this->session->set('zahostQuery', $query->sql);
                    $this->session->set('zahostForm', $query->form);
                }
            }
            $query = $this->session->zahostQuery;
        }

        $hostList = $this->dao->select('*, id AS hostID')->from(TABLE_ZAHOST)
            ->where('deleted')->eq('0')
            ->andWhere('type')->eq('zahost')
            ->beginIF($query)->andWhere($query)->fi()
            ->orderBy($orderBy)
            ->page($pager)
            ->fetchAll();

        foreach($hostList as $host)
        {
            if(empty($host->heartbeat)) $host->hertbeat = '';
            if(time() - strtotime($host->heartbeat) > 60 && $host->status == 'online') $host->status = 'offline';
        }

        return $hostList;
    }

    /**
     * 创建宿主机。
     * Create a host.
     *
     * @param  object   $hostInfo
     * @access public
     * @return int|bool
     */
    public function create($hostInfo)
    {
        $ping = $this->checkAddress($hostInfo->extranet);
        if(!$ping) dao::$errors['extranet'][] = $this->lang->zahost->netError;

        $this->dao->insert(TABLE_ZAHOST)->data($hostInfo)->autoCheck()
            ->batchCheck($this->config->zahost->create->requiredFields, 'notempty')
            ->batchCheck('cpuCores,diskSize', 'gt', 0)
            ->batchCheck('diskSize,memory', 'float')
            ->check('name', 'unique', "type='zahost'")
            ->exec();

        if(dao::isError()) return false;

        $hostID = $this->dao->lastInsertID();
        $this->loadModel('action')->create('zahost', $hostID, 'created');

        return $hostID;
    }

    /**
     * 更新宿主机。
     * Update a host.
     *
     * @param  object     $hostInfo
     * @access public
     * @return array|bool
     */
    public function update($hostInfo)
    {
        $oldHost = $this->getByID($hostInfo->id);

        $ping = $this->checkAddress($hostInfo->extranet);
        if(!$ping) dao::$errors['extranet'][] = $this->lang->zahost->netError;

        $this->dao->update(TABLE_ZAHOST)->data($hostInfo)->autoCheck()
            ->batchCheck($this->config->zahost->create->requiredFields, 'notempty')
            ->batchCheck('cpuCores,diskSize', 'gt', 0)
            ->batchCheck('diskSize,memory', 'float')
            ->check('name', 'unique', "id != $hostInfo->id and type in ('vhost', 'zahost')")
            ->where('id')->eq($hostInfo->id)
            ->exec();

        if(dao::isError()) return false;

        return common::createChanges($oldHost, $hostInfo);
    }

    /**
     * 检查宿主机的IP/域名是否能 ping 通。
     * Ping ip/domain.
     *
     * @param  string $address
     * @access public
     * @return bool
     */
    public function ping($address)
    {
        if(strcasecmp(PHP_OS, 'WINNT') === 0)
        {
            exec("ping -n 1 {$address}", $outcome, $status);
        }
        else
        {
            exec("ping -c 1 {$address}", $outcome, $status);
        }

        return 0 == $status;
    }

    /**
     * 检查宿主机的IP/域名是否可用。
     * Telnet ip/domain.
     *
     * @param  string $address
     * @access public
     * @return bool
     */
    public function checkAddress($address)
    {
        $address = str_replace(array('https://', 'http://'), '', $address);

        if(!filter_var($address, FILTER_VALIDATE_IP) && !filter_var(gethostbyname($address), FILTER_VALIDATE_IP)) return false;
        return true;
    }

    /**
     * 根据编号获取镜像。
     * Get image by ID.
     *
     * @param  int          $imageID
     * @access public
     * @return false|object
     */
    public function getImageByID($imageID)
    {
        return $this->dao->select('*')->from(TABLE_IMAGE)->where('id')->eq($imageID)->fetch();
    }

    /**
     * 根据镜像名称和宿主机编号获取镜像。
     * Get image by name and host.
     *
     * @param  string       $imageName
     * @param  int          $hostID
     * @access public
     * @return object|false
     */
    public function getImageByNameAndHostID($imageName, $hostID)
    {
        return $this->dao->select('*')->from(TABLE_IMAGE)->where('host')->eq($hostID)->andWhere('name')->eq($imageName)->fetch();
    }

    /**
     * 获取宿主机的镜像列表。
     * Get image list of host.
     *
     * @param  int    $hostID
     * @param  string $orderBy
     * @param  object $pager
     * @access public
     * @return array
     */
    public function getImageList($hostID, $orderBy = 'id', $pager = null)
    {
        $imageList = json_decode(commonModel::http($this->config->zahost->imageListUrl, array(), array()));
        if(empty($imageList)) return array();

        $downloadedImageList = $this->dao->select('*')->from(TABLE_IMAGE)->where('host')->eq($hostID)->orderBy($orderBy)->page($pager)->fetchAll('name');

        $refreshPageData = $this->zahostTao->insertImageList($imageList, $hostID, $downloadedImageList);

        if($refreshPageData) $downloadedImageList = $this->dao->select('*')->from(TABLE_IMAGE)->where('host')->eq($hostID)->orderBy($orderBy)->page($pager)->fetchAll('name');

        foreach($downloadedImageList as $image)
        {
            if($image->status == 'notDownloaded')
            {
                $image->cancelMisc   = sprintf("title='%s' class='btn image-cancel image-cancel-%d %s'", $this->lang->zahost->cancel, $image->id, "disabled");
                $image->downloadMisc = sprintf("title='%s' class='btn image-download image-download-%d %s'", $this->lang->zahost->image->downloadImage, $image->id, "");
            }
            else
            {
                $image->cancelMisc   = sprintf("title='%s' data-id='%s' class='btn image-cancel image-cancel-%d %s'", $this->lang->zahost->cancel, $image->id, $image->id, in_array($image->status, array("inprogress", "created")) ? "" : "disabled");
                $image->downloadMisc = sprintf("title='%s' data-id='%s' class='btn image-download image-download-%d %s'", $this->lang->zahost->image->downloadImage, $image->id, $image->id, in_array($image->status, array("completed", "inprogress", "created"))  || $image->from == 'user' ? "disabled" : "");
            }
        }

        return $downloadedImageList;
    }

    /**
     * 获取镜像键值对。
     * Get image pairs by host.
     *
     * @param  int    $hostID
     * @access public
     * @return array
     */
    public function getImagePairs($hostID)
    {
        return $this->dao->select('id, name')->from(TABLE_IMAGE)->where('host')->eq($hostID)->andWhere('status')->eq('completed')->fetchPairs();
    }

    /**
     * 下载镜像。
     * Download image.
     *
     * @param  object $image
     * @access public
     * @return bool
     */
    public function downloadImage($image)
    {
        $host   = $this->getByID($image->host);
        $apiUrl = 'http://' . $host->extranet . ':' . $host->zap . '/api/v1/download/add';

        $apiParams = array();
        $apiParams['md5']  = $image->md5;
        $apiParams['url']  = $image->address;
        $apiParams['task'] = intval($image->id);

        $response = json_decode(commonModel::http($apiUrl, array($apiParams), array(CURLOPT_CUSTOMREQUEST => 'POST'), array("Authorization:$host->tokenSN"), 'json'));

        if($response && $response->code == 'success')
        {
            $this->dao->update(TABLE_IMAGE)->set('status')->eq('created')->where('id')->eq($image->id)->exec();
            return true;
        }

        dao::$errors[] = $this->lang->zahost->image->downloadImageFail;
        return false;
    }

    /**
     * 查询镜像的状态。
     * Query image download progress.
     *
     * @param  object $image
     * @access public
     * @return object
     */
    public function queryDownloadImageStatus($image)
    {
        if(!empty($this->imageStatusList)) $result = $this->imageStatusList;

        if(empty($this->imageStatusList))
        {
            $host   = $this->getByID($image->host);
            $apiUrl = 'http://' . $host->extranet . ':' . $host->zap . '/api/v1/task/getStatus';
            $result = $this->imageStatusList = json_decode(commonModel::http($apiUrl, array(), array(CURLOPT_CUSTOMREQUEST => 'POST'), array("Authorization:$host->tokenSN"), 'json'));

            if(!$result || $result->code != 'success') return $image;
        }

        $currentTask = $this->zahostTao->getCurrentTask($image->id, $result->data);
        if($currentTask)
        {
            $image->rate   = $currentTask->rate;
            $image->status = $currentTask->status;

            if(!empty($result->data->inprogress) && $currentTask->task != $result->data->inprogress[0]->task && $currentTask->status == 'created') $image->status = 'pending';

            $this->dao->update(TABLE_IMAGE)->set('status')->eq($image->status)->set('path')->eq(zget($currentTask, 'path', ''))->where('id')->eq($image->id)->exec();

            $image->taskID = $currentTask->id;
        }
        else
        {
            $image->taskID = 0;
        }

        return $image;
    }

    /**
     * 取消镜像下载。
     * Send cancel download image command to HOST.
     *
     * @param  object $image
     * @access public
     * @return bool
     */
    public function cancelDownload($image)
    {
        $image  = $this->queryDownloadImageStatus($image);
        $host   = $this->getByID($image->host);
        $apiUrl = 'http://' . $host->extranet . ':' . $host->zap . '/api/v1/download/cancel';

        $apiParams = array();
        $apiParams['id'] = intval($image->taskID);

        $response = json_decode(commonModel::http($apiUrl, $apiParams, array(CURLOPT_CUSTOMREQUEST => 'POST'), array("Authorization:$host->tokenSN"), 'json'));
        if($response && $response->code == 'success')
        {
            $this->dao->update(TABLE_IMAGE)->set('status')->eq('canceled')->where('id')->eq($image->id)->exec();
            return true;
        }

        dao::$errors[] = $this->lang->zahost->image->cancelDownloadFail;
        return false;
    }

    /**
     * 获取宿主机的执行节点。
     * Get zanode group by zahost.
     *
     * @access public
     * @return array
     */
    public function getNodeGroupHost()
    {
        return $this->dao->select('t1.id AS hostID, t2.*')->from(TABLE_ZAHOST)->alias('t1')
            ->leftJoin(TABLE_ZAHOST)->alias('t2')->on('t2.parent = t1.id')
            ->where('t2.deleted')->eq('0')
            ->andWhere('t1.deleted')->eq('0')
            ->fetchGroup('hostID', 'id');
    }

    /**
     * 判断按钮是否可点击。
     * Judge an action is clickable or not.
     *
     * @param  object $object
     * @param  string $action
     * @access public
     * @return bool
     */
    public static function isClickable($object, $action)
    {
        if($action == 'delete')         return $object->canDelete;
        if($action == 'browseImage')    return $object->status != 'wait';
        if($action == 'cancelDownload') return $object->status == 'notDownloaded' || !in_array($object->status, array('inprogress', 'created')) ? false : true;
        if($action == 'downloadImage')  return in_array($object->status, array('completed', 'inprogress', 'created')) || $object->from == 'user' ? false : true;

        return true;
    }

    /**
     * 根据是否有宿主机，判断是否隐藏。
     * Judge an action is clickable or not.
     *
     * @access public
     * @return bool
     */
    public function hiddenHost()
    {
        $this->app->loadClass('pager', true);
        $pager = pager::init(0, 20, 1);

        return empty($this->getList('all', 0, 'id_desc', $pager));
    }
}