<?php
/**
 * The model file of common module of ZenTaoPMS.
 *
 * @copyright   Copyright 2009-2015 青岛易软天创网络科技有限公司(QingDao Nature Easy Soft Network Technology Co,LTD, www.cnezsoft.com)
 * @license     ZPL (http://zpl.pub/page/zplv12.html)
 * @author      Chunsheng Wang <chunsheng@cnezsoft.com>
 * @package     common
 * @version     $Id$
 * @link        https://www.zentao.pm
 */
class commonModel extends model
{
    static public $requestErrors = array();

    /**
     * The construc method, to do some auto things.
     *
     * @access public
     * @return void
     */
    public function __construct()
    {
        parent::__construct();
        if(!defined('FIRST_RUN'))
        {
            define('FIRST_RUN', true);
            $this->sendHeader();
            $this->setCompany();
            $this->setUser();
            $this->loadConfigFromDB();
            $this->app->setTimezone();
            $this->loadCustomFromDB();
            if(!$this->checkIP()) die($this->lang->ipLimited);
            $this->app->loadLang('company');
        }
    }

    /**
     * Set the header info.
     *
     * @access public
     * @return void
     */
    public function sendHeader()
    {
        header("Content-Type: text/html; Language={$this->config->charset}");
        header("Cache-control: private");

        if($this->loadModel('setting')->getItem('owner=system&module=sso&key=turnon'))
        {    
            if(isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == 'on') 
            {    
                $session = $this->config->sessionVar . '=' . session_id();
                header("Set-Cookie: $session; SameSite=None; Secure=true", false);
            }    
        }    
        else 
        {    
            if(!empty($this->config->xFrameOptions)) header("X-Frame-Options: {$this->config->xFrameOptions}");
        } 
    }

    /**
     * Set the commpany.
     *
     * First, search company by the http host. If not found, search by the default domain. Last, use the first as the default.
     * After get the company, save it to session.
     * @access public
     * @return void
     */
    public function setCompany()
    {
        $httpHost = $this->server->http_host;

        if($this->session->company)
        {
            $this->app->company = $this->session->company;
        }
        else
        {
            $company = $this->loadModel('company')->getFirst();
            if(!$company) $this->app->triggerError(sprintf($this->lang->error->companyNotFound, $httpHost), __FILE__, __LINE__, $exit = true);
            $this->session->set('company', $company);
            $this->app->company  = $company;
        }
    }

    /**
     * Set the user info.
     *
     * @access public
     * @return void
     */
    public function setUser()
    {
        if($this->session->user)
        {
            if(!defined('IN_UPGRADE')) $this->session->user->view = $this->loadModel('user')->grantUserView();
            $this->app->user = $this->session->user;
        }
        elseif($this->app->company->guest or PHP_SAPI == 'cli')
        {
            $user             = new stdClass();
            $user->id         = 0;
            $user->account    = 'guest';
            $user->realname   = 'guest';
            $user->role       = 'guest';
            $user->admin      = false;
            $user->rights     = $this->loadModel('user')->authorize('guest');
            $user->groups     = array('group');
            if(!defined('IN_UPGRADE')) $user->view = $this->user->grantUserView($user->account, $user->rights['acls']);
            $this->session->set('user', $user);
            $this->app->user = $this->session->user;
        }
    }

    /**
     * Load configs from database and save it to config->system and config->personal.
     *
     * @access public
     * @return void
     */
    public function loadConfigFromDB()
    {
        /* Get configs of system and current user. */
        $account = isset($this->app->user->account) ? $this->app->user->account : '';
        if($this->config->db->name) $config  = $this->loadModel('setting')->getSysAndPersonalConfig($account);
        $this->config->system   = isset($config['system']) ? $config['system'] : array();
        $this->config->personal = isset($config[$account]) ? $config[$account] : array();

        /* Overide the items defined in config/config.php and config/my.php. */
        if(isset($this->config->system->common)) $this->app->mergeConfig($this->config->system->common, 'common');
        if(isset($this->config->personal->common)) $this->app->mergeConfig($this->config->personal->common, 'common');
    }

    /**
     * Load custom lang from db.
     *
     * @access public
     * @return void
     */
    public function loadCustomFromDB()
    {
        $this->loadModel('custom');

        if(defined('IN_UPGRADE')) return;
        if(!$this->config->db->name) return;

        $records = $this->custom->getAllLang();
        if(!$records) return;

        $this->lang->db = new stdclass();
        $this->lang->db->custom = $records;
    }

    /**
     * Juage a method of one module is open or not?
     *
     * @param  string $module
     * @param  string $method
     * @access public
     * @return bool
     */
    public function isOpenMethod($module, $method)
    {
        if($module == 'user' and strpos('login|logout|deny|reset', $method) !== false) return true;
        if($module == 'api'  and $method == 'getsessionid') return true;
        if($module == 'misc' and $method == 'checktable') return true;
        if($module == 'misc' and $method == 'qrcode') return true;
        if($module == 'misc' and $method == 'about') return true;
        if($module == 'misc' and $method == 'checkupdate') return true;
        if($module == 'misc' and $method == 'ping')  return true;
        if($module == 'sso' and $method == 'login')  return true;
        if($module == 'sso' and $method == 'logout') return true;
        if($module == 'sso' and $method == 'bind') return true;
        if($module == 'sso' and $method == 'gettodolist') return true;
        if($module == 'block' and $method == 'main' and isset($_GET['hash'])) return true;
        if($module == 'file' and $method == 'read') return true;

        if($this->loadModel('user')->isLogon() or ($this->app->company->guest and $this->app->user->account == 'guest'))
        {
            if(stripos($method, 'ajax') !== false) return true;
            if($module == 'misc' and $method == 'downloadclient') return true;
            if($module == 'misc' and $method == 'changelog')  return true;
            if($module == 'tutorial' and $method == 'start')  return true;
            if($module == 'tutorial' and $method == 'index')  return true;
            if($module == 'tutorial' and $method == 'quit')   return true;
            if($module == 'tutorial' and $method == 'wizard') return true;
            if($module == 'block' and $method == 'admin') return true;
            if($module == 'block' and $method == 'set') return true;
            if($module == 'block' and $method == 'sort') return true;
            if($module == 'block' and $method == 'resize') return true;
            if($module == 'block' and $method == 'dashboard') return true;
            if($module == 'block' and $method == 'printblock') return true;
            if($module == 'block' and $method == 'main') return true;
            if($module == 'block' and $method == 'delete') return true;
            if($module == 'product' and $method == 'showerrornone') return true;
            if($module == 'report' and $method == 'annualdata') return true;
        }
        return false;
    }

    /**
     * Deny access.
     *
     * @access public
     * @return mixed
     */
    public function deny($module, $method)
    {
        /* Get authorize again. */
        $user = $this->app->user;
        $user->rights = $this->loadModel('user')->authorize($user->account);
        $user->groups = $this->user->getGroups($user->account);
        $this->session->set('user', $user);
        $this->app->user = $this->session->user;
        if(commonModel::hasPriv($module, $method)) return true;

        $vars = "module=$module&method=$method";
        if(isset($this->server->http_referer))
        {
            $referer = helper::safe64Encode($this->server->http_referer);
            $vars   .= "&referer=$referer";
        }
        $denyLink = helper::createLink('user', 'deny', $vars);

        /* Fix the bug of IE: use js locate, can't get the referer. */
        if(strpos($this->server->http_user_agent, 'Trident') !== false)
        {
            echo "<a href='$denyLink' id='denylink' style='display:none'>deny</a>";
            echo "<script>document.getElementById('denylink').click();</script>";
        }
        else
        {
            echo js::locate($denyLink);
        }
        exit;
    }

    /**
     * Print the run info.
     *
     * @param mixed $startTime  the start time.
     * @access public
     * @return array    the run info array.
     */
    public function printRunInfo($startTime)
    {
        $info['timeUsed'] = round(getTime() - $startTime, 4) * 1000;
        $info['memory']   = round(memory_get_peak_usage() / 1024, 1);
        $info['querys']   = count(dao::$querys);
        vprintf($this->lang->runInfo, $info);
        return $info;
    }

    /**
     * Print top bar.
     *
     * @static
     * @access public
     * @return void
     */
    public static function printUserBar()
    {
        global $lang, $app;

        if(isset($app->user))
        {
            $isGuest = $app->user->account == 'guest';

            echo "<a class='dropdown-toggle' data-toggle='dropdown'>";
            echo "<span class='user-name'>" . (empty($app->user->realname) ? $app->user->account : $app->user->realname) . '</span>';
            echo "<span class='caret'></span>";
            echo '</a>';
            echo "<ul class='dropdown-menu pull-right'>";
            if(!$isGuest)
            {
                echo '<li class="user-profile-item">';
                echo "<a href='" . helper::createLink('my', 'profile') . "' class='" . (!empty($app->user->role) && isset($lang->user->roleList[$app->user->role]) ? '' : ' no-role') . "'>";
                echo "<div class='avatar avatar bg-secondary avatar-circle'>" . strtoupper($app->user->account[0]) . "</div>\n";
                echo '<div class="user-profile-name">' . (empty($app->user->realname) ? $app->user->account : $app->user->realname) . '</div>';
                if(isset($lang->user->roleList[$app->user->role])) echo '<div class="user-profile-role">' . $lang->user->roleList[$app->user->role] . '</div>';
                echo '</a></li><li class="divider"></li>';
                echo '<li>' . html::a(helper::createLink('my', 'profile'), $lang->profile) . '</li>';
                echo '<li>' . html::a(helper::createLink('my', 'changepassword', '', '', true), $lang->changePassword, '', "class='iframe' data-width='500'") . '</li>';

                echo "<li class='divider'></li>";
            }

            echo "<li class='dropdown-submenu'>";
            echo "<a href='javascript:;'>" . $lang->theme . "</a><ul class='dropdown-menu pull-left'>";
            foreach($app->lang->themes as $key => $value)
            {
                echo "<li " . ($app->cookie->theme == $key ? "class='selected'" : '') . "><a href='javascript:selectTheme(\"$key\");' data-value='" . $key . "'>" . $value . "</a></li>";
            }
            echo '</ul></li>';

            echo "<li class='dropdown-submenu'>";
            echo "<a href='javascript:;'>" . $lang->lang . "</a><ul class='dropdown-menu pull-left'>";
            foreach ($app->config->langs as $key => $value)
            {
                echo "<li " . ($app->cookie->lang == $key ? "class='selected'" : '') . "><a href='javascript:selectLang(\"$key\");'>" . $value . "</a></li>";
            }
            echo '</ul></li>';

            if(!$isGuest and !commonModel::isTutorialMode() and $app->viewType != 'mhtml')
            {
                $customLink = helper::createLink('custom', 'ajaxMenu', "module={$app->getModuleName()}&method={$app->getMethodName()}", '', true);
                echo "<li class='custom-item'><a href='$customLink' data-toggle='modal' data-type='iframe' data-icon='cog' data-width='80%'>$lang->customMenu</a></li>";
            }

            echo '<li class="divider"></li>';
            commonModel::printAboutBar();
            echo '<li class="divider"></li>';
            echo '<li>';
            if($isGuest)
            {
                echo html::a(helper::createLink('user', 'login'), $lang->login);
            }
            else
            {
                echo html::a(helper::createLink('user', 'logout'), $lang->logout);
            }
            echo '</li></ul>';
        }
    }

    /**
     * Print about bar.
     *
     * @static
     * @access public
     * @return void
     */
    public static function printAboutBar()
    {
        global $app, $config, $lang;
        echo "<li class='dropdown-submenu'>";
        echo "<a data-toggle='dropdown'>" . $lang->help . "</a>";
        echo "<ul class='dropdown-menu pull-left'>";
        if($config->global->flow == 'full' && !commonModel::isTutorialMode() and $app->user->account != 'guest') echo '<li>' . html::a(helper::createLink('tutorial', 'start'), $lang->noviceTutorial, '', "class='iframe' data-class-name='modal-inverse' data-width='800' data-headerless='true' data-backdrop='true' data-keyboard='true'") . "</li>";

        $manualUrl = (!empty($config->isINT)) ? $config->manualUrl['int'] : $config->manualUrl['home'];
        echo '<li>' . html::a($manualUrl, $lang->manual, '_blank', "class='open-help-tab'") . '</li>';

        echo '<li>' . html::a(helper::createLink('misc', 'changeLog'), $lang->changeLog, '', "class='iframe' data-width='800' data-headerless='true' data-backdrop='true' data-keyboard='true'") . '</li>';
        echo "</ul></li>\n";
        echo '<li>' . html::a(helper::createLink('misc', 'about'), $lang->aboutZenTao, '', "class='about iframe' data-width='1050' data-headerless='true' data-backdrop='true' data-keyboard='true' data-class='modal-about'") . '</li>';
    }

    /**
     * Create menu item link
     *
     * @param object $menuItem
     *
     * @static
     * @access public
     * @return string
     */
    public static function createMenuLink($menuItem)
    {
        $link = $menuItem->link;
        if(is_array($menuItem->link))
        {
            $vars = isset($menuItem->link['vars']) ? $menuItem->link['vars'] : '';
            if(isset($menuItem->tutorial) && $menuItem->tutorial)
            {
                if(!empty($vars)) $vars = helper::safe64Encode($vars);
                $link = helper::createLink('tutorial', 'wizard', "module={$menuItem->link['module']}&method={$menuItem->link['method']}&params=$vars");
            }
            else
            {
                $link = helper::createLink($menuItem->link['module'], $menuItem->link['method'], $vars);
            }
        }
        return $link;
    }

    /**
     * Create sub menu by settings in lang files.
     *
     * @param  array    $items
     * @param  mixed    $replace
     * @static
     * @access public
     * @return array
     */
    public static function createSubMenu($items, $replace)
    {
        $subMenu = array();
        foreach($items as $subMenuKey => $subMenuLink)
        {
            if(is_array($subMenuLink) and isset($subMenuLink['link'])) $subMenuLink = $subMenuLink['link'];
            if(is_array($replace))
            {
                $subMenuLink = vsprintf($subMenuLink, $replace);
            }
            else
            {
                $subMenuLink = sprintf($subMenuLink, $replace);
            }
            list($subMenuName, $subMenuModule, $subMenuMethod, $subMenuParams) = explode('|', $subMenuLink);

            $link = array();
            $link['module'] = $subMenuModule;
            $link['method'] = $subMenuMethod;
            $link['vars']   = $subMenuParams;

            $subMenuItem     = isset($items->$subMenuKey) ? $items->$subMenuKey : array();
            $menu            = new stdclass();
            $menu->name      = $subMenuKey;
            $menu->link      = $link;
            $menu->text      = $subMenuName;
            $menu->subModule = isset($subMenuItem['subModule']) ? $subMenuItem['subModule'] : '';
            $menu->alias     = isset($subMenuItem['alias'])     ? $subMenuItem['alias'] : '';
            $menu->hidden    = false;
            $subMenu[$subMenuKey] = $menu;
        }

        return $subMenu;
    }

    /**
     * Print admin subMenu.
     * 
     * @param  string    $subMenu 
     * @static
     * @access public
     * @return void
     */
    public static function printAdminSubMenu($subMenu)
    {
        global $app, $lang;
        $currentModule = $app->getModuleName();
        $currentMethod = $app->getMethodName();
        if(isset($lang->admin->subMenuOrder->$subMenu))
        {
            ksort($lang->admin->subMenuOrder->$subMenu);
            foreach($lang->admin->subMenuOrder->$subMenu as $type)
            {
                if(isset($lang->admin->subMenu->$subMenu->$type))
                {
                    $subModule = '';
                    $alias     = '';
                    $link      = $lang->admin->subMenu->$subMenu->$type;
                    if(is_array($lang->admin->subMenu->$subMenu->$type))
                    {
                        $subMenuType = $lang->admin->subMenu->$subMenu->$type;
                        if(isset($subMenuType['subModule'])) $subModule = $subMenuType['subModule'];
                        if(isset($subMenuType['alias']))     $alias     = $subMenuType['alias'];
                        if(isset($subMenuType['link']))      $link      = $subMenuType['link'];
                    }

                    list($text, $moduleName, $methodName)= explode('|', $link);
                    if(!common::hasPriv($moduleName, $methodName)) continue;

                    $active = ($currentModule == $moduleName and $currentMethod == $methodName) ? 'btn-active-text' : '';
                    if($subModule and strpos(",{$subModule}," , ",{$currentModule},") !== false) $active = 'btn-active-text';
                    if($alias and $currentModule == $moduleName and strpos(",$alias,", ",$currentMethod,") !== false) $active = 'btn-active-text';
                    echo html::a(helper::createLink($moduleName, $methodName), "<span class='text'>$text</span>", '', "class='btn btn-link {$active}' id='{$type}Tab'");
                }
            }
        }
    }

    /**
     * Print the main menu.
     *
     * @param  string $moduleName
     * @param  string $methodName
     *
     * @static
     * @access public
     * @return void
     */
    public static function printMainmenu($moduleName, $methodName = '')
    {
        global $app, $lang;

        /* Set the main main menu. */
        $mainMenu = $moduleName;
        if(isset($lang->menugroup->$moduleName)) $mainMenu = $lang->menugroup->$moduleName;

        /* Print all main menus. */
        $menu       = customModel::getMainMenu();
        $activeName = 'active';
        $lastMenu   = end($menu);

        echo "<ul class='nav nav-default'>\n";
        foreach($menu as $menuItem)
        {
            if(empty($menuItem->hidden))
            {
                $active = $menuItem->name == $mainMenu ? "class='$activeName'" : '';
                $link   = commonModel::createMenuLink($menuItem);
                echo "<li $active data-id='$menuItem->name'><a href='$link' $active>$menuItem->text</a></li>\n";

                if(($lastMenu->name != $menuItem->name) && strpos($lang->dividerMenu, ",{$menuItem->name},") !== false) echo "<li class='divider'></li>";
            }
        }
        echo "</ul>\n";
    }

    /**
     * Print the search box.
     *
     * @static
     * @access public
     * @return void
     */
    public static function printSearchBox()
    {
        global $app, $config, $lang;
        $moduleName  = $app->getModuleName();
        $methodName  = $app->getMethodName();
        $searchObject = $moduleName;

        if($moduleName == 'product')
        {
            if($methodName == 'browse') $searchObject = 'story';
        }
        elseif($moduleName == 'project')
        {
            if(strpos('task|story|bug|build', $methodName) !== false) $searchObject = $methodName;
        }
        elseif($moduleName == 'my' or $moduleName == 'user')
        {
            $searchObject = $methodName;
        }
        if(empty($lang->searchObjects[$searchObject]))
        {
            $searchObject = 'bug';
            if($config->global->flow == 'onlyStory') $searchObject = 'story';
            if($config->global->flow == 'onlyTask')  $searchObject = 'task';
        }

        echo "<div id='searchbox'>";
        echo "<div class='input-group'>";
        echo "<div class='input-group-btn'>";
        echo "<a data-toggle='dropdown' class='btn btn-link'><span id='searchTypeName'>" . $lang->searchObjects[$searchObject] . "</span> <span class='caret'></span></a>";
        echo html::hidden('searchType', $searchObject);
        echo "<ul id='searchTypeMenu' class='dropdown-menu'>";
        foreach ($lang->searchObjects as $key => $value)
        {
            $class = $key == $searchObject ? "class='selected'" : '';
            echo "<li $class><a href='javascript:$.setSearchType(\"$key\");' data-value='{$key}'>{$value}</a></li>";
        }
        echo '</ul></div>';
        echo "<input id='searchInput' class='form-control search-input' type='search' onclick='this.value=\"\"' onkeydown='if(event.keyCode==13) $.gotoObject();' placeholder='" . $lang->searchTips . "'/>";
        echo '</div>';
        echo "<a href='javascript:$.gotoObject();' class='btn btn-link' id='searchGo'>GO!</a>";
        echo "</div>\n";
    }

    /**
     * Print the module menu.
     *
     * @param  string $moduleName
     * @static
     * @access public
     * @return void
     */
    public static function printModuleMenu($moduleName)
    {
        global $config, $lang, $app;

        if(!isset($lang->$moduleName->menu))
        {
            echo "<ul></ul>";
            return;
        }

        /* get current module and method. */
        $isTutorialMode = commonModel::isTutorialMode();
        $currentModule  = $app->getModuleName();
        $currentMethod  = $app->getMethodName();
        $isMobile       = $app->viewType === 'mhtml';

        /* When use workflow then set rawModule to moduleName. */
        if($moduleName == 'flow') $moduleName = $app->rawModule;
        $menu = customModel::getModuleMenu($moduleName);

        /* If this is not workflow then use rawModule and rawMethod to judge highlight. */
        if(!$app->isFlow)
        {
            $currentModule  = $app->rawModule;
            $currentMethod  = $app->rawMethod;
        }

        if($isTutorialMode and defined('WIZARD_MODULE')) $currentModule  = WIZARD_MODULE;
        if($isTutorialMode and defined('WIZARD_METHOD')) $currentMethod  = WIZARD_METHOD;

        /* The beginning of the menu. */
        echo $isMobile ? '' : "<ul class='nav nav-default'>\n";

        if(isset($lang->menugroup->$moduleName)) $moduleName = $lang->menugroup->$moduleName;
        /* Cycling to print every sub menu. */
        foreach($menu as $menuItem)
        {
            if(isset($menuItem->hidden) && $menuItem->hidden) continue;
            if($isMobile and empty($menuItem->link)) continue;
            if(isset($lang->$moduleName->dividerMenu) and strpos($lang->$moduleName->dividerMenu, ",{$menuItem->name},") !== false) echo "<li class='divider'></li>";

            /* Init the these vars. */
            $alias     = isset($menuItem->alias) ? $menuItem->alias : '';
            $subModule = isset($menuItem->subModule) ? explode(',', $menuItem->subModule) : array();
            $class     = isset($menuItem->class) ? $menuItem->class : '';
            $active    = '';
            if($subModule and in_array($currentModule, $subModule)) $active = 'active';
            if($alias and $moduleName == $currentModule and strpos(",$alias,", ",$currentMethod,") !== false) $active = 'active';
            if($menuItem->link)
            {
                $target = '';
                $module = '';
                $method = '';
                $link   = commonModel::createMenuLink($menuItem);
                if(is_array($menuItem->link))
                {
                    if(isset($menuItem->link['target'])) $target = $menuItem->link['target'];
                    if(isset($menuItem->link['module'])) $module = $menuItem->link['module'];
                    if(isset($menuItem->link['method'])) $method = $menuItem->link['method'];
                }
                if($module == $currentModule and ($method == $currentMethod or strpos(",$alias,", ",$currentMethod,") !== false)) $active = 'active';

                /* Avoid user thinking the page is shaking when the menu toggle class 'active' */
                if($config->global->flow == 'onlyTest')
                {
                    if($currentModule == 'bug'       && $currentMethod == 'browse') $active = '';
                    if($currentModule == 'testcase'  && $currentMethod == 'browse') $active = '';
                    if($currentModule == 'testtask'  && $currentMethod == 'browse') $active = '';
                    if($currentModule == 'caselib'   && $currentMethod == 'browse') $active = '';
                }

                $label   = $menuItem->text;
                $subMenu = '';
                /* Print sub menus. */
                if(isset($menuItem->subMenu))
                {
                    foreach($menuItem->subMenu as $subMenuItem)
                    {
                        if($subMenuItem->hidden) continue;

                        $subActive = '';
                        $subModule = '';
                        $subMethod = '';
                        $subParams = '';
                        $subLabel  = $subMenuItem->text;
                        if(isset($subMenuItem->link['module'])) $subModule = $subMenuItem->link['module'];
                        if(isset($subMenuItem->link['method'])) $subMethod = $subMenuItem->link['method'];
                        if(isset($subMenuItem->link['vars']))   $subParams = $subMenuItem->link['vars'];

                        $subLink = helper::createLink($subModule, $subMethod, $subParams);

                        if($config->global->flow != 'onlyTest' && $currentModule == strtolower($subModule) && $currentMethod == strtolower($subMethod)) $subActive = 'active';

                        $subMenu .= "<li class='$subActive' data-id='$subMenuItem->name'>" . html::a($subLink, $subLabel) . '</li>';
                    }

                    if(empty($subMenu)) continue;

                    $label   .= "<span class='caret'></span>";
                    $subMenu  = "<ul class='dropdown-menu'>{$subMenu}</ul>";
                }

                $menuItemHtml = "<li class='$class $active' data-id='$menuItem->name'>" . html::a($link, $label, $target) . $subMenu . "</li>\n";
                if($isMobile) $menuItemHtml = html::a($link, $menuItem->text, $target, "class='$class $active'") . "\n";
                echo $menuItemHtml;
            }
            else
            {
                echo $isMobile ? $menuItem->text : "<li class='$class $active' data-id='$menuItem->name'>$menuItem->text</li>\n";
            }
        }
        echo $isMobile ? '' : "</ul>\n";
    }

    /**
     * Print the bread menu.
     *
     * @param  string $moduleName
     * @param  string $position
     * @static
     * @access public
     * @return void
     */
    public static function printBreadMenu($moduleName, $position)
    {
        global $lang;
        $mainMenu = $moduleName;
        if(isset($lang->menugroup->$moduleName)) $mainMenu = $lang->menugroup->$moduleName;
        echo "<ul class='breadcrumb'>";
        echo '<li>' . html::a(helper::createLink('my', 'index'), $lang->zentaoPMS) . '</li>';
        if($moduleName != 'index')
        {
            if(!isset($lang->menu->$mainMenu)) return print("</ul>");

            $menuLink = $lang->menu->$mainMenu;
            list($menuLabel, $module, $method) = explode('|', $menuLink);
            echo '<li>' . html::a(helper::createLink($module, $method), $menuLabel) . '</li>';
        }
        else
        {
            echo '<li>' . $lang->index->common . '</li>';
        }
        if(empty($position))
        {
            echo '</ul>';
            return;
        }

        if(is_array($position))
        {
            foreach($position as $key => $link) echo "<li class='active'>" . $link . '</li>';
        }
        echo '</ul>';
    }

    /**
     * Print the link for notify file.
     *
     * @static
     * @access public
     * @return void
     */
    public static function printNotifyLink()
    {
        if(strpos(strtolower($_SERVER['HTTP_USER_AGENT']), 'windows') !== false)
        {
            global $lang;
            echo html::a(helper::createLink('misc', 'downNotify'), "<i class='icon-bell'></i>", '', "title='$lang->downNotify' class='text-primary'") . ' &nbsp; ';
        }
    }

    /**
     * Print the link for zentao client.
     *
     * @static
     * @access public
     * @return void
     */
    public static function printClientLink()
    {
        global $lang;
        echo html::a(helper::createLink('misc', 'downloadClient', '', '', true), $lang->downloadClient, '', "title='$lang->downloadClient' class='text-primary iframe' data-width='600'") . html::a($lang->clientHelpLink, "<i class='icon-lightbulb text-success'></i>", '', "title='$lang->clientHelp' target='_blank'") . ' &nbsp; ';
    }

    /**
     * Print QR code Link.
     *
     * @param string $color
     *
     * @static
     * @access public
     * @return void
     */
    public static function printQRCodeLink($color = '')
    {
        global $lang;
        echo html::a('javascript:;', "<i class='icon-qrcode'></i>", '', "class='qrCode $color' id='qrcodeBtn' title='{$lang->user->mobileLogin}'");
        echo "<div class='popover top' id='qrcodePopover'><div class='arrow'></div><h3 class='popover-title'>{$lang->user->mobileLogin}</h3><div class='popover-content'><img src='data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7'></div></div>";
        echo '<script>$(function(){$("#qrcodeBtn").click(function(){$("#qrcodePopover").toggleClass("show");}); $("#wrap").click(function(){$("#qrcodePopover").removeClass("show");});});</script>';
        echo '<script>$(function(){$("#qrcodeBtn").hover(function(){$(".popover-content img").attr("src", "' . helper::createLink('misc', 'qrCode') . '");});});</script>';
    }

    /**
     * Print the link contains orderBy field.
     *
     * This method will auto set the orderby param according the params. Fox example, if the order by is desc,
     * will be changed to asc.
     *
     * @param  string $fieldName    the field name to sort by
     * @param  string $orderBy      the order by string
     * @param  string $vars         the vars to be passed
     * @param  string $label        the label of the link
     * @param  string $module       the module name
     * @param  string $method       the method name
     *
     * @access public
     * @return void
     */
    public static function printOrderLink($fieldName, $orderBy, $vars, $label, $module = '', $method = '')
    {
        global $lang, $app;
        if(empty($module)) $module = isset($app->rawModule) ? $app->rawModule : $app->getModuleName();
        if(empty($method)) $method = isset($app->rawMethod) ? $app->rawMethod : $app->getMethodName();
        $className = 'header';
        $isMobile  = $app->viewType === 'mhtml';

        $order = explode('_', $orderBy);
        $order[0] = trim($order[0], '`');
        if($order[0] == $fieldName)
        {
            if(isset($order[1]) and $order[1] == 'asc')
            {
                $orderBy   = "{$order[0]}_desc";
                $className = $isMobile ? 'SortUp' : 'sort-up';
            }
            else
            {
                $orderBy = "{$order[0]}_asc";
                $className = $isMobile ? 'SortDown' : 'sort-down';
            }
        }
        else
        {
            $orderBy   = "" . trim($fieldName, '`') . "" . '_' . 'asc';
            $className = 'header';
        }
        $link = helper::createLink($module, $method, sprintf($vars, $orderBy));
        echo $isMobile ? html::a($link, $label, '', "class='$className'") : html::a($link, $label, '', "class='$className'");
    }

    /**
     *
     * Print link to an modules' methd.
     *
     * Before printing, check the privilege first. If no privilege, return fasle. Else, print the link, return true.
     *
     * @param string $module    the module name
     * @param string $method    the method
     * @param string $vars      vars to be passed
     * @param string $label     the label of the link
     * @param string $target    the target of the link
     * @param string $misc      others
     * @param bool   $newline
     * @param bool   $onlyBody
     * @param        $object
     *
     * @static
     * @access public
     * @return bool
     */
    public static function printLink($module, $method, $vars = '', $label, $target = '', $misc = '', $newline = true, $onlyBody = false, $object = null)
    {
        if(!commonModel::hasPriv($module, $method, $object)) return false;
        echo html::a(helper::createLink($module, $method, $vars, '', $onlyBody), $label, $target, $misc, $newline);
        return true;
    }

    /**
     * Print icon of split line.
     *
     * @static
     * @access public
     * @return void
     */
    public static function printDivider()
    {
        echo "&nbsp;&nbsp;&nbsp;&nbsp;";
    }

    /**
     * Print icon of comment.
     *
     * @param string $commentFormLink
     * @param object $object
     *
     * @static
     * @access public
     * @return mixed
     */
    public static function printCommentIcon($commentFormLink, $object = null)
    {
        global $lang;

        if(!commonModel::hasPriv('action', 'comment', $object)) return false;
        echo html::commonButton('<i class="icon icon-chat-line"></i> ' . $lang->action->create, '', 'btn btn-link pull-right btn-comment');
        echo <<<EOD
<div class="modal fade modal-comment">
  <div class="modal-dialog">
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal"><i class="icon icon-close"></i></button>
        <h4 class="modal-title">{$lang->action->create}</h4>
      </div>
      <div class="modal-body">
        <form class="load-indicator" action="{$commentFormLink}" target='hiddenwin' method='post'>
          <div class="form-group">
            <textarea id='comment' name='comment' class="form-control" rows="8" autofocus="autofocus"></textarea>
          </div>
          <div class="form-group form-actions text-center">
            <button type="submit" class="btn btn-primary btn-wide">{$lang->save}</button>
            <button type="button" class="btn btn-wide" data-dismiss="modal">{$lang->close}</button>
          </div>
        </form>
      </div>
    </div>
  </div>
</div>
<script>
$(function()
{
    \$body = $('body', window.parent.document);
    if(\$body.hasClass('hide-modal-close')) \$body.removeClass('hide-modal-close');
});
</script>
EOD;
    }

    /**
     * Build icon button.
     *
     * @param  string $module
     * @param  string $method
     * @param  string $vars
     * @param  object $object
     * @param  string $type button|list
     * @param  string $icon
     * @param  string $target
     * @param  string $extraClass
     * @param  bool   $onlyBody
     * @param  string $misc
     * @static
     * @access public
     * @return void
     */
    public static function buildIconButton($module, $method, $vars = '', $object = '', $type = 'button', $icon = '', $target = '', $extraClass = '', $onlyBody = false, $misc = '', $title = '')
    {
        if(isonlybody() and strpos($extraClass, 'showinonlybody') === false) return false;

        /* Remove iframe for operation button in modal. Prevent pop up in modal. */
        if(isonlybody() and strpos($extraClass, 'showinonlybody') !== false) $extraClass = str_replace('iframe', '', $extraClass);

        global $app, $lang;

        /* Judge the $method of $module clickable or not, default is clickable. */
        $clickable = true;
        if(is_object($object))
        {
            if($app->getModuleName() != $module) $app->control->loadModel($module);
            $modelClass = class_exists("ext{$module}Model") ? "ext{$module}Model" : $module . "Model";
            if(class_exists($modelClass) and is_callable(array($modelClass, 'isClickable')))
            {
                $clickable = call_user_func_array(array($modelClass, 'isClickable'), array('object' => $object, 'method' => $method));
            }
        }

        /* Set module and method, then create link to it. */
        if(strtolower($module) == 'story'    and strtolower($method) == 'createcase') ($module = 'testcase') and ($method = 'create');
        if(strtolower($module) == 'bug'      and strtolower($method) == 'tostory')    ($module = 'story') and ($method = 'create');
        if(strtolower($module) == 'bug'      and strtolower($method) == 'createcase') ($module = 'testcase') and ($method = 'create');
        if(!commonModel::hasPriv($module, $method, $object)) return false;
        $link = helper::createLink($module, $method, $vars, '', $onlyBody);

        /* Set the icon title, try search the $method defination in $module's lang or $common's lang. */
        if(empty($title))
        {
            $title = $method;
            if($method == 'create' and $icon == 'copy') $method = 'copy';
            if(isset($lang->$method) and is_string($lang->$method)) $title = $lang->$method;
            if((isset($lang->$module->$method) or $app->loadLang($module)) and isset($lang->$module->$method))
            {
                $title = $method == 'report' ? $lang->$module->$method->common : $lang->$module->$method;
            }
            if($icon == 'toStory')   $title  = $lang->bug->toStory;
            if($icon == 'createBug') $title  = $lang->testtask->createBug;
        }

        /* set the class. */
        if(!$icon)
        {
            $icon = isset($lang->icons[$method]) ? $lang->icons[$method] : $method;
        }
        if(strpos(',edit,copy,report,export,delete,', ",$method,") !== false) $module = 'common';
        $class = "icon-$module-$method";

        if(!$clickable) $class .= ' disabled';
        if($icon)       $class .= ' icon-' . $icon;


        /* Create the icon link. */
        if($clickable)
        {
            if($app->getViewType() == 'mhtml')
            {
                return "<a data-remote='$link' class='$extraClass' $misc>$title</a>";
            }
            if($type == 'button')
            {
                if($method != 'edit' and $method != 'copy' and $method != 'delete')
                {
                    return html::a($link, "<i class='$class'></i> " . "<span class='text'>{$title}</span>", $target, "class='btn btn-link $extraClass' $misc", true);
                }
                else
                {
                    return html::a($link, "<i class='$class'></i>", $target, "class='btn btn-link $extraClass' title='$title' $misc", false);
                }
            }
            else
            {
                return html::a($link, "<i class='$class'></i>", $target, "class='btn $extraClass' title='$title' $misc", false) . "\n";
            }
        }
        else
        {
            if($type == 'list')
            {
                return "<button type='button' class='disabled btn $extraClass'><i class='$class' title='$title' $misc></i></button>\n";
            }
        }
    }

    /**
     * Print link icon.
     *
     * @param  string $module
     * @param  string $method
     * @param  string $vars
     * @param  object $object
     * @param  string $type button|list
     * @param  string $icon
     * @param  string $target
     * @param  string $extraClass
     * @param  bool   $onlyBody
     * @param  string $misc
     * @static
     * @access public
     * @return void
     */
    public static function printIcon($module, $method, $vars = '', $object = '', $type = 'button', $icon = '', $target = '', $extraClass = '', $onlyBody = false, $misc = '', $title = '')
    {
        echo common::buildIconButton($module, $method, $vars, $object, $type, $icon, $target, $extraClass, $onlyBody, $misc, $title);
    }

    /**
     * Print backLink and preLink and nextLink.
     *
     * @param string $backLink
     * @param object $preAndNext
     * @param string $linkTemplate
     *
     * @static
     * @access public
     * @return void
     */
    static public function printRPN($backLink, $preAndNext = '', $linkTemplate = '')
    {
        global $lang, $app;
        if(isonlybody()) return false;

        $title = $lang->goback . $lang->backShortcutKey;
        echo html::a($backLink, '<i class="icon-goback icon-back icon-large"></i>', '', "id='back' class='btn' title={$title}");

        if(isset($preAndNext->pre) and $preAndNext->pre)
        {
            $id = (isset($_SESSION['testcaseOnlyCondition']) and !$_SESSION['testcaseOnlyCondition'] and $app->getModuleName() == 'testcase' and isset($preAndNext->pre->case)) ? 'case' : 'id';
            $title = isset($preAndNext->pre->title) ? $preAndNext->pre->title : $preAndNext->pre->name;
            $title = '#' . $preAndNext->pre->$id . ' ' . $title . ' ' . $lang->preShortcutKey;
            $link  = $linkTemplate ? sprintf($linkTemplate, $preAndNext->pre->$id) : inLink('view', "ID={$preAndNext->pre->$id}");
            echo html::a($link, '<i class="icon-pre icon-chevron-left"></i>', '', "id='pre' class='btn' title='{$title}'");
        }
        if(isset($preAndNext->next) and $preAndNext->next)
        {
            $id = (isset($_SESSION['testcaseOnlyCondition']) and !$_SESSION['testcaseOnlyCondition'] and $app->getModuleName() == 'testcase' and isset($preAndNext->next->case)) ? 'case' : 'id';
            $title = isset($preAndNext->next->title) ? $preAndNext->next->title : $preAndNext->next->name;
            $title = '#' . $preAndNext->next->$id . ' ' . $title . ' ' . $lang->nextShortcutKey;
            $link  = $linkTemplate ? sprintf($linkTemplate, $preAndNext->next->$id) : inLink('view', "ID={$preAndNext->next->$id}");
            echo html::a($link, '<i class="icon-pre icon-chevron-right"></i>', '', "id='next' class='btn' title='$title'");
        }
    }

    /**
     * Print back link
     *
     * @param  string $backLink
     * @static
     * @access public
     * @return void
     */
    static public function printBack($backLink, $class = '')
    {
        global $lang, $app;
        if(isonlybody()) return false;

        if(empty($class)) $class = 'btn';
        $title = $lang->goback . $lang->backShortcutKey;
        echo html::a($backLink, '<i class="icon-goback icon-back"></i> ' . $lang->goback, '', "id='back' class='{$class}' title={$title}");
    }

    /**
     * Print pre and next link
     *
     * @param  string $preAndNext
     * @param  string $linkTemplate
     * @static
     * @access public
     * @return void
     */
    public static function printPreAndNext($preAndNext = '', $linkTemplate = '')
    {
        global $lang, $app;
        if(isonlybody()) return false;

        echo "<nav class='container'>";
        if(isset($preAndNext->pre) and $preAndNext->pre)
        {
            $id = (isset($_SESSION['testcaseOnlyCondition']) and !$_SESSION['testcaseOnlyCondition'] and $app->getModuleName() == 'testcase' and isset($preAndNext->pre->case)) ? 'case' : 'id';
            $title = isset($preAndNext->pre->title) ? $preAndNext->pre->title : $preAndNext->pre->name;
            $title = '#' . $preAndNext->pre->$id . ' ' . $title . ' ' . $lang->preShortcutKey;
            $link  = $linkTemplate ? sprintf($linkTemplate, $preAndNext->pre->$id) : inLink('view', "ID={$preAndNext->pre->$id}");
            echo html::a($link, '<i class="icon-pre icon-chevron-left"></i>', '', "id='prevPage' class='btn' title='{$title}'");
        }
        if(isset($preAndNext->next) and $preAndNext->next)
        {
            $id = (isset($_SESSION['testcaseOnlyCondition']) and !$_SESSION['testcaseOnlyCondition'] and $app->getModuleName() == 'testcase' and isset($preAndNext->next->case)) ? 'case' : 'id';
            $title = isset($preAndNext->next->title) ? $preAndNext->next->title : $preAndNext->next->name;
            $title = '#' . $preAndNext->next->$id . ' ' . $title . ' ' . $lang->nextShortcutKey;
            $link  = $linkTemplate ? sprintf($linkTemplate, $preAndNext->next->$id) : inLink('view', "ID={$preAndNext->next->$id}");
            echo html::a($link, '<i class="icon-pre icon-chevron-right"></i>', '', "id='nextPage' class='btn' title='$title'");
        }
        echo '</nav>';
    }

    /**
     * Create changes of one object.
     *
     * @param mixed $old    the old object
     * @param mixed $new    the new object
     * @static
     * @access public
     * @return array
     */
    public static function createChanges($old, $new)
    {
        global $app, $config;

        /**
         * 当主状态改变并且未设置子状态的值时把子状态的值设置为默认值并记录日志。
         * Change sub status when status is changed and sub status is not set, and record the changes.
         */
        if(isset($config->bizVersion))
        {
            $oldID        = zget($old, 'id', '');
            $oldStatus    = zget($old, 'status', '');
            $newStatus    = zget($new, 'status', '');
            $newSubStatus = zget($new, 'subStatus', '');

            if($oldID && $oldStatus && $newStatus && !$newSubStatus && $oldStatus != $newStatus)
            {
                $moduleName = $app->getModuleName();

                $field = $app->dbh->query('SELECT options FROM ' . TABLE_WORKFLOWFIELD . " WHERE `module` = '$moduleName' AND `field` = 'subStatus'")->fetch();
                if(!empty($field->options)) $field->options = json_decode($field->options, true);

                if(!empty($field->options[$newStatus]['default']))
                {
                    $flow    = $app->dbh->query('SELECT `table` FROM ' . TABLE_WORKFLOW . " WHERE `module`='$moduleName'")->fetch();
                    $default = $field->options[$newStatus]['default'];

                    $app->dbh->exec("UPDATE `$flow->table` SET `subStatus` = '$default' WHERE `id` = '$oldID'");

                    $new->subStatus = $default;
                }
            }
        }

        $changes    = array();
        $magicQuote = get_magic_quotes_gpc();
        foreach($new as $key => $value)
        {
            if(is_object($value) or is_array($value)) continue;
            if(strtolower($key) == 'lastediteddate')  continue;
            if(strtolower($key) == 'lasteditedby')    continue;
            if(strtolower($key) == 'assigneddate')    continue;
            if(strtolower($key) == 'editedby')        continue;
            if(strtolower($key) == 'editeddate')      continue;
            if(strtolower($key) == 'uid')             continue;
            if(strtolower($key) == 'finisheddate' && $value == '')  continue;
            if(strtolower($key) == 'canceleddate' && $value == '')  continue;
            if(strtolower($key) == 'closeddate'   && $value == '')  continue;

            if($magicQuote) $value = stripslashes($value);
            if(isset($old->$key) and $value != stripslashes($old->$key))
            {
                $diff = '';
                if(substr_count($value, "\n") > 1     or
                    substr_count($old->$key, "\n") > 1 or
                    strpos('name,title,desc,spec,steps,content,digest,verify,report', strtolower($key)) !== false)
                {
                    $diff = commonModel::diff($old->$key, $value);
                }
                $changes[] = array('field' => $key, 'old' => $old->$key, 'new' => $value, 'diff' => $diff);
            }
        }
        return $changes;
    }

    /**
     * Diff two string. (see phpt)
     *
     * @param string $text1
     * @param string $text2
     * @static
     * @access public
     * @return string
     */
    public static function diff($text1, $text2)
    {
        $text1 = str_replace('&nbsp;', '', trim($text1));
        $text2 = str_replace('&nbsp;', '', trim($text2));
        $w  = explode("\n", $text1);
        $o  = explode("\n", $text2);
        $w1 = array_diff_assoc($w,$o);
        $o1 = array_diff_assoc($o,$w);
        $w2 = array();
        $o2 = array();
        foreach($w1 as $idx => $val) $w2[sprintf("%03d<",$idx)] = sprintf("%03d- ", $idx+1) . "<del>" . trim($val) . "</del>";
        foreach($o1 as $idx => $val) $o2[sprintf("%03d>",$idx)] = sprintf("%03d+ ", $idx+1) . "<ins>" . trim($val) . "</ins>";
        $diff = array_merge($w2, $o2);
        ksort($diff);
        return implode("\n", $diff);
    }

    /**
     * Judge Suhosin Setting whether the actual size of post data is large than the setting size.
     *
     * @param  int    $countInputVars
     * @static
     * @access public
     * @return bool
     */
    public static function judgeSuhosinSetting($countInputVars)
    {
        if(extension_loaded('suhosin'))
        {
            $maxPostVars    = ini_get('suhosin.post.max_vars');
            $maxRequestVars = ini_get('suhosin.request.max_vars');
            if($countInputVars > $maxPostVars or $countInputVars > $maxRequestVars) return true;
        }
        else
        {
            $maxInputVars = ini_get('max_input_vars');
            if($maxInputVars and $countInputVars > (int)$maxInputVars) return true;
        }

        return false;
    }

    /**
     * Get the previous and next object.
     *
     * @param  string $type story|task|bug|case
     * @param  string $objectID
     * @access public
     * @return void
     */
    public function getPreAndNextObject($type, $objectID)
    {
        $preAndNextObject       = new stdClass();
        $preAndNextObject->pre  = '';
        $preAndNextObject->next = '';

        /* Get objectIDList. */
        $table             = $this->config->objectTables[$type];
        $queryCondition    = $type . 'QueryCondition';
        $typeOnlyCondition = $type . 'OnlyCondition';
        $queryCondition = $this->session->$queryCondition;
        $orderBy = $type . 'OrderBy';
        $orderBy = $this->session->$orderBy;
        if(empty($queryCondition) or $this->session->$typeOnlyCondition)
        {
            $queryObjects = $this->dao->select('*')->from($table)->where('id')->eq($objectID)
                ->beginIF($queryCondition != false)->orWhere($queryCondition)->fi()
                ->beginIF($orderBy != false)->orderBy($orderBy)->fi()
                ->query();
        }
        else
        {
            $queryObjects = $this->dao->query($queryCondition . (empty($orderBy) ? '' : " ORDER BY $orderBy"));
        }

        $preObj  = false;
        while($object = $queryObjects->fetch())
        {
            $key = (!$this->session->$typeOnlyCondition and $type == 'testcase' and isset($object->case)) ? 'case' : 'id';
            $id  = $object->$key;

            /* Get next object. */
            if($preObj === true)
            {
                $preAndNextObject->next = $object;
                break;
            }

            /* Get pre object. */
            if($id == $objectID)
            {
                if($preObj) $preAndNextObject->pre = $preObj;
                $preObj = true;
            }
            if($preObj !== true) $preObj = $object;
        }

        $existObject = $type . 'PreAndNext';
        $this->session->set($existObject, array('objectID' => $objectID, 'preAndNextObject' => $preAndNextObject));
        return $preAndNextObject;
    }

    /**
     * Save one executed query.
     *
     * @param  string    $sql
     * @param  string    $objectType story|task|bug|testcase
     * @access public
     * @return void
     */
    public function saveQueryCondition($sql, $objectType, $onlyCondition = true)
    {
        /* Set the query condition session. */
        if($onlyCondition)
        {
            $queryCondition = explode(' WHERE ', $sql);
            $queryCondition = isset($queryCondition[1]) ? $queryCondition[1] : '';
            if($queryCondition)
            {
                $queryCondition = explode(' ORDER BY ', $queryCondition);
                $queryCondition = str_replace('t1.', '', $queryCondition[0]);
            }
        }
        else
        {
            $queryCondition = explode(' ORDER BY ', $sql);
            $queryCondition = $queryCondition[0];
        }
        $queryCondition = trim($queryCondition);
        if(empty($queryCondition)) $queryCondition = "1=1";

        $this->session->set($objectType . 'QueryCondition', $queryCondition);
        $this->session->set($objectType . 'OnlyCondition', $onlyCondition);

        /* Set the query condition session. */
        $orderBy = explode(' ORDER BY ', $sql);
        $orderBy = isset($orderBy[1]) ? $orderBy[1] : '';
        if($orderBy)
        {
            $orderBy = explode(' LIMIT ', $orderBy);
            $orderBy = $orderBy[0];
            if($onlyCondition) $orderBy = str_replace('t1.', '', $orderBy);
        }
        $this->session->set($objectType . 'OrderBy', $orderBy);
    }

    /**
     * Remove duplicate for story, task, bug, case, doc.
     *
     * @param  string       $type  e.g. story task bug case doc.
     * @param  array|object $data
     * @param  string       $condition
     * @access public
     * @return array
     */
    public function removeDuplicate($type, $data = '', $condition = '')
    {
        $table      = $this->config->objectTables[$type];
        $titleField = $type == 'task' ? 'name' : 'title';
        $date       = date(DT_DATETIME1, time() - $this->config->duplicateTime);
        $dateField  = $type == 'doc' ? 'addedDate' : 'openedDate';
        $titles     = $data->$titleField;

        if(empty($titles)) return false;
        $duplicate = $this->dao->select("id,$titleField")->from($table)
            ->where('deleted')->eq(0)
            ->andWhere($titleField)->in($titles)
            ->andWhere($dateField)->ge($date)->fi()
            ->beginIF($condition)->andWhere($condition)->fi()
            ->fetchPairs();

        if($duplicate and is_string($titles)) return array('stop' => true, 'duplicate' => key($duplicate));
        if($duplicate and is_array($titles))
        {
            foreach($titles as $i => $title)
            {
                if(in_array($title, $duplicate)) unset($titles[$i]);
            }
            $data->$titleField = $titles;
        }
        return array('stop' => false, 'data' => $data);
    }

    /**
     * Append order by.
     *
     * @param  string $orderBy
     * @param  string $append
     * @access public
     * @return string
     */
    public function appendOrder($orderBy, $append = 'id')
    {
        if(empty($orderBy)) return $append;

        list($firstOrder) = explode(',', $orderBy);
        $sort = strpos($firstOrder, '_') === false ? '_asc' : strstr($firstOrder, '_');
        return strpos($orderBy, $append) === false ? $orderBy . ',' . $append . $sort : $orderBy;
    }

    /**
     * Check field exists
     *
     * @param  string    $table
     * @param  string    $field
     * @access public
     * @return bool
     */
    public function checkField($table, $field)
    {
        $fields   = $this->dao->query("DESC $table")->fetchAll();
        $hasField = false;
        foreach($fields as $fieldObj)
        {
            if($field == $fieldObj->Field)
            {
                $hasField = true;
                break;
            }
        }
        return $hasField;
    }

    /**
     * Check safe file.
     *
     * @access public
     * @return string|false
     */
    public function checkSafeFile()
    {
        if($this->app->getModuleName() == 'upgrade' and $this->session->upgrading) return false;

        $statusFile = $this->app->getAppRoot() . 'www' . DIRECTORY_SEPARATOR . 'ok.txt';
        return (!is_file($statusFile) or (time() - filemtime($statusFile)) > 3600) ? $statusFile : false;
    }

    /**
     * Check upgrade's status file is ok or not.
     *
     * @access public
     * @return void
     */
    public function checkUpgradeStatus()
    {
        $statusFile = $this->checkSafeFile();
        if($statusFile)
        {
            $this->app->loadLang('upgrade');
            $cmd = strtoupper(substr(PHP_OS, 0, 3)) === 'WIN' ? $this->lang->upgrade->createFileWinCMD : $this->lang->upgrade->createFileLinuxCMD;
            $cmd = sprintf($cmd, $statusFile);

            echo "<html><head><meta http-equiv='Content-Type' content='text/html; charset=utf-8' /></head><body>";
            echo "<table align='center' style='margin-top:100px; border:1px solid gray; font-size:14px;padding:8px;'><tr><td>";
            printf($this->lang->upgrade->setStatusFile, $cmd, $statusFile);
            die('</td></tr></table></body></html>');
        }
    }

    /**
     * Check the user has permission to access this method, if not, locate to the login page or deny page.
     *
     * @access public
     * @return void
     */
    public function checkPriv()
    {
        $module = $this->app->getModuleName();
        $method = $this->app->getMethodName();
        if($this->app->isFlow)
        {
            $module = $this->app->rawModule;
            $method = $this->app->rawMethod;
        }

        if(!empty($this->app->user->modifyPassword) and (($module != 'my' or $method != 'changepassword') and ($module != 'user' or $method != 'logout'))) die(js::locate(helper::createLink('my', 'changepassword', '', '', true)));
        if($this->isOpenMethod($module, $method)) return true;
        if(!$this->loadModel('user')->isLogon() and $this->server->php_auth_user) $this->user->identifyByPhpAuth();
        if(!$this->loadModel('user')->isLogon() and $this->cookie->za) $this->user->identifyByCookie();

        if(isset($this->app->user))
        {
            $this->app->user = $this->session->user;

            if(!commonModel::hasPriv($module, $method)) $this->deny($module, $method);
        }
        else
        {
            $referer  = helper::safe64Encode($this->app->getURI(true));
            die(js::locate(helper::createLink('user', 'login', "referer=$referer")));
        }
    }

    /**
     * Check the user has permisson of one method of one module.
     *
     * @param  string $module
     * @param  string $method
     * @static
     * @access public
     * @return bool
     */
    public static function hasPriv($module, $method, $object = null)
    {
        global $app, $lang;

        $module  = strtolower($module);
        $method  = strtolower($method);

        /* Check the parent object is closed. */
        if(!empty($method) and strpos('close|batchclose', $method) === false and !commonModel::canBeChanged($module, $object)) return false;

        /* Check is the super admin or not. */
        if(!empty($app->user->admin) || strpos($app->company->admins, ",{$app->user->account},") !== false) return true;
        /* If not super admin, check the rights. */
        $rights  = $app->user->rights['rights'];
        $acls    = $app->user->rights['acls'];

        if((($app->user->account != 'guest') or ($app->company->guest and $app->user->account == 'guest')) and $module == 'report' and $method == 'annualdata') return true;

        if(isset($rights[$module][$method]))
        {
            if(!commonModel::hasDBPriv($object, $module, $method)) return false;

            if(empty($acls['views'])) return true;
            $menu = isset($lang->menugroup->$module) ? $lang->menugroup->$module : $module;
            $menu = strtolower($menu);
            if($menu != 'qa' and !isset($lang->$menu->menu)) return true;
            if($menu == 'my' or $menu == 'index' or $module == 'tree') return true;
            if($module == 'company' and $method == 'dynamic') return true;
            if($module == 'action' and $method == 'editcomment') return true;
            if($module == 'action' and $method == 'comment') return true;
            if(!isset($acls['views'][$menu])) return false;

            return true;
        }

        return false;
    }

    /**
     * Check db priv.
     *
     * @param  object $object
     * @param  string $module
     * @param  string $method
     * @static
     * @access public
     * @return void
     */
    public static function hasDBPriv($object, $module = '', $method = '')
    {
        global $app;

        if(!empty($app->user->admin)) return true;
        if($module == 'todo' and ($method == 'create' or $method == 'batchcreate')) return true;
        if($module == 'effort' and ($method == 'batchcreate' or $method == 'createforobject')) return true;

        /* Limited project. */
        $limitedProject = false;
        if(!empty($module) && $module == 'task' && !empty($object->project) or
            !empty($module) && $module == 'project' && !empty($object->id)
        )
        {
            $objectID = '';
            if($module == 'project' and !empty($object->id))  $objectID = $object->id;
            if($module == 'task' and !empty($object->project))$objectID = $object->project;

            $limitedProjects = !empty($_SESSION['limitedProjects']) ? $_SESSION['limitedProjects'] : '';
            if($objectID and strpos(",{$limitedProjects},", ",$objectID,") !== false) $limitedProject = true;
        }
        if(empty($app->user->rights['rights']['my']['limited']) && !$limitedProject) return true;

        if(!empty($method) && strpos($method, 'batch')  === 0) return false;
        if(!empty($method) && strpos($method, 'link')   === 0) return false;
        if(!empty($method) && strpos($method, 'create') === 0) return false;
        if(!empty($method) && strpos($method, 'import') === 0) return false;

        if(empty($object)) return true;

        if(!empty($object->openedBy)      && $object->openedBy     == $app->user->account or
            !empty($object->addedBy)      && $object->addedBy      == $app->user->account or
            !empty($object->account)      && $object->account      == $app->user->account or
            !empty($object->assignedTo)   && $object->assignedTo   == $app->user->account or
            !empty($object->finishedBy)   && $object->finishedBy   == $app->user->account or
            !empty($object->canceledBy)   && $object->canceledBy   == $app->user->account or
            !empty($object->closedBy)     && $object->closedBy     == $app->user->account or
            !empty($object->lastEditedBy) && $object->lastEditedBy == $app->user->account)
        {
            return true;
        }

        return false;
    }

    /**
     * Check whether IP in white list.
     *
     * @param  string $ipWhiteList
     * @access public
     * @return bool
     */
    public function checkIP($ipWhiteList = '')
    {
        $ip = helper::getRemoteIp();

        if(!$ipWhiteList) $ipWhiteList = $this->config->ipWhiteList;

        /* If the ip white list is '*'. */
        if($ipWhiteList == '*') return true;

        /* The ip is same as ip in white list. */
        if($ip == $ipWhiteList) return true;

        /* If the ip in white list is like 192.168.1.1-192.168.1.10. */
        if(strpos($ipWhiteList, '-') !== false)
        {
            list($min, $max) = explode('-', $ipWhiteList);
            $min = ip2long(trim($min));
            $max = ip2long(trim($max));
            $ip  = ip2long(trim($ip));

            return $ip >= $min and $ip <= $max;
        }

        /* If the ip in white list is in IP/CIDR format eg 127.0.0.1/24. Thanks to zcat. */
        if(strpos($ipWhiteList, '/') == false) $ipWhiteList .= '/32';
        list($ipWhiteList, $netmask) = explode('/', $ipWhiteList, 2);

        $ip          = ip2long($ip);
        $ipWhiteList = ip2long($ipWhiteList);
        $wildcard    = pow(2, (32 - $netmask)) - 1;
        $netmask     = ~ $wildcard;

        return (($ip & $netmask) == ($ipWhiteList & $netmask));
    }

    /**
     * Replace the %s of one key of a menu by $params.
     *
     * All the menus are defined in the common's language file. But there're many dynamic params, so in the defination,
     * we used %s as placeholder. These %s should be setted in one module.
     *
     * The items of one module's menu may be an string or array. For example, please see module/common/lang.
     *
     * @param  string $object     the menus of one module
     * @param  string $key        the menu item to be replaced
     * @param  string $params     the params passed to the menu item
     * @access public
     * @return void
     */
    public static function setMenuVars($menu, $key, $params)
    {
        if(!isset($menu->$key)) return false;

        if(is_array($params))
        {
            if(is_array($menu->$key))
            {
                $menu->$key = (object)$menu->$key;
                $menu->$key->link = vsprintf($menu->$key->link, $params);
                $menu->$key = (array)$menu->$key;
            }
            else
            {
                $menu->$key = vsprintf($menu->$key, $params);
            }
        }
        else
        {
            if(is_array($menu->$key))
            {
                $menu->$key = (object)$menu->$key;
                $menu->$key->link = sprintf($menu->$key->link, $params);
                $menu->$key = (array)$menu->$key;
            }
            else
            {
                $menu->$key = sprintf($menu->$key, $params);
            }
        }
    }

    /**
     * Get the full url of the system.
     *
     * @access public
     * @return string
     */
    public static function getSysURL()
    {
        $httpType = (isset($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] == 'on') ? 'https' : 'http';
        if(isset($_SERVER['HTTP_X_FORWARDED_PROTO']) and strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) == 'https') $httpType = 'https';
        $httpHost = $_SERVER['HTTP_HOST'];
        return "$httpType://$httpHost";
    }

    /**
     * Check whether view type is tutorial
     * @access public
     * @return boolean
     */
    public static function isTutorialMode()
    {
        return (isset($_SESSION['tutorialMode']) and $_SESSION['tutorialMode']);
    }

    /**
     * Convert items to Pinyin.
     *
     * @param  array    $items
     * @static
     * @access public
     * @return array
     */
    public static function convert2Pinyin($items)
    {
        global $app;
        static $allConverted = array();
        static $pinyin;
        if(empty($pinyin)) $pinyin = $app->loadClass('pinyin');

        $sign = ' aNdAnD ';
        $notConvertedItems = array_diff($items, array_keys($allConverted));

        if($notConvertedItems)
        {
            $convertedPinYin = $pinyin->romanize(join($sign, $notConvertedItems));
            $itemsPinYin     = explode(trim($sign), $convertedPinYin);
            foreach($notConvertedItems as $item)
            {
                $itemPinYin  = array_shift($itemsPinYin);
                $wordsPinYin = explode("\t", trim($itemPinYin));

                $abbr = '';
                foreach($wordsPinYin as $i => $wordPinyin)
                {
                    if($wordPinyin) $abbr .= $wordPinyin[0];
                }

                $allConverted[$item] = strtolower(join($wordsPinYin) . ' ' . $abbr);
            }
        }

        $convertedItems = array();
        foreach($items as $item) $convertedItems[$item] = zget($allConverted, $item, null);

        return $convertedItems;
    }

    /**
     * Check an entry.
     *
     * @access public
     * @return void
     */
    public function checkEntry()
    {
        $this->loadModel('entry');
        if($this->session->valid_entry)
        {
            if(!$this->session->entry_code) $this->response('SESSION_CODE_MISSING');
            if($this->session->valid_entry != md5(md5($this->get->code) . $this->server->remote_addr)) $this->response('SESSION_VERIFY_FAILED');
            return true;
        }

        if(!$this->get->code)  $this->response('PARAM_CODE_MISSING');
        if(!$this->get->token) $this->response('PARAM_TOKEN_MISSING');

        $entry = $this->entry->getByCode($this->get->code);
        if(!$entry)                              $this->response('EMPTY_ENTRY');
        if(!$entry->key)                         $this->response('EMPTY_KEY');
        if(!$this->checkIP($entry->ip))          $this->response('IP_DENIED');
        if(!$this->checkEntryToken($entry))      $this->response('INVALID_TOKEN');
        if($entry->freePasswd == 0 and empty($entry->account)) $this->response('ACCOUNT_UNBOUND');

        $isFreepasswd = ($_GET['m'] == 'user' and strtolower($_GET['f']) == 'apilogin' and $_GET['account'] and $entry->freePasswd);
        if($isFreepasswd) $entry->account = $_GET['account'];

        $user = $this->dao->findByAccount($entry->account)->from(TABLE_USER)->andWhere('deleted')->eq(0)->fetch();
        if(!$user) $this->response('INVALID_ACCOUNT');

        $this->loadModel('user');
        $user->last   = time();
        $user->rights = $this->user->authorize($user->account);
        $user->groups = $this->user->getGroups($user->account);
        $user->view   = $this->user->grantUserView($user->account, $user->rights['acls']);
        $user->admin  = strpos($this->app->company->admins, ",{$user->account},") !== false;
        $this->session->set('user', $user);
        $this->app->user = $user;

        $this->dao->update(TABLE_USER)->set('last')->eq($user->last)->where('account')->eq($user->account)->exec();
        $this->loadModel('action')->create('user', $user->id, 'login');
        $this->loadModel('score')->create('user', 'login');

        if($isFreepasswd) die(js::locate($this->config->webRoot));

        $this->session->set('ENTRY_CODE', $this->get->code);
        $this->session->set('VALID_ENTRY', md5(md5($this->get->code) . $this->server->remote_addr));
        $this->loadModel('entry')->saveLog($entry->id, $this->server->request_uri);

        /* Add for task #5384. */
        if($_SERVER['REQUEST_METHOD'] == 'POST' and empty($_POST))
        {
            $post = file_get_contents("php://input");
            if(!empty($post)) $post  = json_decode($post, true);
            if(!empty($post)) $_POST = $post;
        }

        unset($_GET['code']);
        unset($_GET['token']);
    }

    /**
     * Check token of an entry.
     *
     * @param  object $entry
     * @access public
     * @return bool
     */
    public function checkEntryToken($entry)
    {
        parse_str($this->server->query_String, $queryString);
        unset($queryString['token']);

        /* Change for task #5384. */
        if(isset($queryString['time']))
        {
            $timestamp = $queryString['time'];
            if(strlen($timestamp) > 10) $timestamp = substr($timestamp, 0, 10);
            if(strlen($timestamp) != 10 or $timestamp[0] >= '4') $this->response('ERROR_TIMESTAMP');

            $result = $this->get->token == md5($entry->code . $entry->key . $queryString['time']);
            if($result)
            {
                if($timestamp <= $entry->calledTime) $this->response('CALLED_TIME');
                $this->loadModel('entry')->updateTime($entry->code, $timestamp);
                unset($_GET['time']);
                return $result;
            }
        }

        $queryString = http_build_query($queryString);
        return $this->get->token == md5(md5($queryString) . $entry->key);
    }

    /**
     * Check Not CN Lang. 
     * 
     * @static
     * @access public
     * @return bool
     */
    public static function checkNotCN()
    {
        global $app;
        return strpos('|zh-cn|zh-tw|', '|' . $app->getClientLang() . '|') === false;
    }

    /**
     * Check the object can be changed.
     *
     * @param  string $module
     * @param  object $object
     * @static
     * @access public
     * @return bool
     */
    public static function canBeChanged($module, $object = null)
    {
        global $app, $config;

        /* Check the product is closed. */
        if(!empty($object->product) and is_numeric($object->product) and empty($config->CRProduct))
        {
            $product = $app->control->loadModel('product')->getByID($object->product);
            if($product->status == 'closed') return false;
        }

        /* Check the project is closed. */
        $productModuleList = array('story', 'bug', 'testtask');
        if(!in_array($module, $productModuleList) and !empty($object->project) and is_numeric($object->project) and empty($config->CRProject))
        {
            $project = $app->control->loadModel('project')->getByID($object->project);
            if($project->status == 'closed') return false;
        }

        return true;
    }

    /**
     * Check object can modify.
     *
     * @param  string $type    product|project
     * @param  object $object
     * @static
     * @access public
     * @return bool
     */
    public static function canModify($type, $object)
    {
        global $config;

        if($type == 'product' and empty($config->CRProduct) and $object->status == 'closed') return false;
        if($type == 'project' and empty($config->CRProject) and $object->status == 'closed') return false;

        return true;
    }

    /**
     * Response.
     *
     * @param  string $code
     * @access public
     * @return void
     */
    public function response($code)
    {
        $response = new stdclass();
        $response->errcode = $this->config->entry->errcode[$code];
        $response->errmsg  = $this->lang->entry->errmsg[$code];

        die(helper::jsonEncode($response));
    }

    /**
     * Http.
     *
     * @param  string       $url
     * @param  string|array $data
     * @param  array        $options   This is option and value pair, like CURLOPT_HEADER => true. Use curl_setopt function to set options.
     * @param  array        $headers   Set request headers.
     * @static
     * @access public
     * @return string
     */
    public static function http($url, $data = null, $options = array(), $headers = array())
    {
        global $lang, $app;
        if(!extension_loaded('curl')) return json_encode(array('result' => 'fail', 'message' => $lang->error->noCurlExt));

        commonModel::$requestErrors = array();

        if(!is_array($headers)) $headers = (array)$headers;
        $headers[] = "API-RemoteIP: " . zget($_SERVER, 'REMOTE_ADDR', '');

        $curl = curl_init();
        curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
        curl_setopt($curl, CURLOPT_USERAGENT, 'Sae T OAuth2 v0.1');
        curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 30);
        curl_setopt($curl, CURLOPT_TIMEOUT, 30);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($curl, CURLOPT_ENCODING, "");
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
        curl_setopt($curl, CURLOPT_HEADER, FALSE);
        curl_setopt($curl, CURLINFO_HEADER_OUT, TRUE);
        curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($curl, CURLOPT_URL, $url);

        if(!empty($data))
        {
            curl_setopt($curl, CURLOPT_POST, true);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }

        if($options) curl_setopt_array($curl, $options);

        $response = curl_exec($curl);
        $errors   = curl_error($curl);
        curl_close($curl);

        $logFile = $app->getLogRoot() . 'saas.'. date('Ymd') . '.log.php';
        if(!file_exists($logFile)) file_put_contents($logFile, '<?php die(); ?' . '>');

        $fh = @fopen($logFile, 'a');
        if($fh)
        {
            fwrite($fh, date('Ymd H:i:s') . ": " . $app->getURI() . "\n");
            fwrite($fh, "url:    " . $url . "\n");
            if(!empty($data)) fwrite($fh, "data:   " . print_r($data, true) . "\n");
            fwrite($fh, "results:" . print_r($response, true) . "\n");
            if(!empty($errors)) fwrite($fh, "errors: " . $errors . "\n");
            fclose($fh);
        }

        if($errors) commonModel::$requestErrors[] = $errors;

        return $response;
    }
}

class common extends commonModel
{
}
