<?php
/* Copyright (C) 2007-2009	Laurent Destailleur	<eldy@users.sourceforge.net>
 * Copyright (C) 2009-2012	Regis Houssin		<regis.houssin@capnetworks.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/**
 *  \file       htdocs/core/class/menubase.class.php
 *  \ingroup    core
 *  \brief      File of class to manage dynamic menu entries
 */


/**
 *  Class to manage menu entries
 */
class Menubase
{
    var $db;							// To store db handler
    var $error;							// To return error code (or message)
    var $errors=array();				// To return several error codes (or messages)

    var $id;

    var $menu_handler;
    var $module;
    var $type;
    var $mainmenu;
    var $fk_menu;
    var $fk_mainmenu;
    var $fk_leftmenu;
    var $position;
    var $url;
    var $target;
    var $titre;
    var $langs;
    var $level;
    var $leftmenu;		//<! Not used
    var $perms;
    var $enabled;
    var $user;
    var $tms;


    /**
	 *	Constructor
	 *
	 *  @param		DoliDB		$db 		    Database handler
     *  @param     	string		$menu_handler	Menu handler
     */
    function __construct($db,$menu_handler='')
    {
        $this->db = $db;
        $this->menu_handler = $menu_handler;
        return 1;
    }


    /**
     *      Create menu entry into database
     *
     *      @param      User	$user       User that create
     *      @return     int      			<0 if KO, Id of record if OK
     */
    function create($user=null)
    {
        global $conf, $langs;

        // Clean parameters
        $this->menu_handler=trim($this->menu_handler);
        $this->module=trim($this->module);
        $this->type=trim($this->type);
        $this->mainmenu=trim($this->mainmenu);
        $this->leftmenu=trim($this->leftmenu);
        $this->fk_menu=trim($this->fk_menu);          // If -1, fk_mainmenu and fk_leftmenu must be defined
        $this->fk_mainmenu=trim($this->fk_mainmenu);
        $this->fk_leftmenu=trim($this->fk_leftmenu);
        $this->position=trim($this->position);
        $this->url=trim($this->url);
        $this->target=trim($this->target);
        $this->titre=trim($this->titre);
        $this->langs=trim($this->langs);
        $this->perms=trim($this->perms);
        $this->enabled=trim($this->enabled);
        $this->user=trim($this->user);
        $this->position=trim($this->position);
        if (! $this->level) $this->level=0;

        // Check parameters
        if (empty($this->menu_handler)) return -1;

        // For PGSQL, we must first found the max rowid and use it as rowid in insert because postgresql
        // may use an already used value because its internal cursor does not increase when we do
        // an insert with a forced id.
        if (in_array($this->db->type,array('pgsql')))
        {
          $sql = "SELECT MAX(rowid) as maxrowid FROM ".MAIN_DB_PREFIX."menu";
          $resqlrowid=$this->db->query($sql);
          if ($resqlrowid)
          {
               $obj=$this->db->fetch_object($resqlrowid);
               $maxrowid=$obj->maxrowid;

               // Max rowid can be empty if there is no record yet
               if(empty($maxrowid)) $maxrowid=1;

               $sql = "SELECT setval('".MAIN_DB_PREFIX."menu_rowid_seq', ".($maxrowid).")";
               //print $sql; exit;
               $resqlrowidset=$this->db->query($sql);
               if (! $resqlrowidset) dol_print_error($this->db);
          }
          else dol_print_error($this->db);
        }

        // Insert request
        $sql = "INSERT INTO ".MAIN_DB_PREFIX."menu(";
        $sql.= "menu_handler,";
        $sql.= "entity,";
        $sql.= "module,";
        $sql.= "type,";
        $sql.= "mainmenu,";
        $sql.= "leftmenu,";
        $sql.= "fk_menu,";
        $sql.= "fk_mainmenu,";
        $sql.= "fk_leftmenu,";
        $sql.= "position,";
        $sql.= "url,";
        $sql.= "target,";
        $sql.= "titre,";
        $sql.= "langs,";
        $sql.= "perms,";
        $sql.= "enabled,";
        $sql.= "usertype";
        $sql.= ") VALUES (";
        $sql.= " '".$this->menu_handler."',";
        $sql.= " '".$conf->entity."',";
        $sql.= " '".$this->module."',";
        $sql.= " '".$this->type."',";
        $sql.= " ".($this->mainmenu?"'".$this->mainmenu."'":"''").",";    // Can't be null
        $sql.= " ".($this->leftmenu?"'".$this->leftmenu."'":"null").",";
        $sql.= " '".$this->fk_menu."',";
        $sql.= " ".($this->fk_mainmenu?"'".$this->fk_mainmenu."'":"null").",";
        $sql.= " ".($this->fk_leftmenu?"'".$this->fk_leftmenu."'":"null").",";
        $sql.= " '".(int) $this->position."',";
        $sql.= " '".$this->db->escape($this->url)."',";
        $sql.= " '".$this->db->escape($this->target)."',";
        $sql.= " '".$this->db->escape($this->titre)."',";
        $sql.= " '".$this->db->escape($this->langs)."',";
        $sql.= " '".$this->db->escape($this->perms)."',";
        $sql.= " '".$this->db->escape($this->enabled)."',";
        $sql.= " '".$this->user."'";
        $sql.= ")";

        dol_syslog(get_class($this)."::create", LOG_DEBUG);
        $resql=$this->db->query($sql);
        if ($resql)
        {
            $this->id = $this->db->last_insert_id(MAIN_DB_PREFIX."menu");
            dol_syslog(get_class($this)."::create record added has rowid=".$this->id, LOG_DEBUG);

            return $this->id;
        }
        else
        {
            $this->error="Error ".$this->db->lasterror();
            return -1;
        }
    }

    /**
     *  Update menu entry into database.
     *
     *  @param	User	$user        	User that modify
     *  @param  int		$notrigger	    0=no, 1=yes (no update trigger)
     *  @return int 		        	<0 if KO, >0 if OK
     */
    function update($user=null, $notrigger=0)
    {
        global $conf, $langs;

        // Clean parameters
        $this->rowid=trim($this->rowid);
        $this->menu_handler=trim($this->menu_handler);
        $this->module=trim($this->module);
        $this->type=trim($this->type);
        $this->mainmenu=trim($this->mainmenu);
        $this->leftmenu=trim($this->leftmenu);
        $this->fk_menu=trim($this->fk_menu);
        $this->fk_mainmenu=trim($this->fk_mainmenu);
        $this->fk_leftmenu=trim($this->fk_leftmenu);
        $this->position=trim($this->position);
        $this->url=trim($this->url);
        $this->target=trim($this->target);
        $this->titre=trim($this->titre);
        $this->langs=trim($this->langs);
        $this->perms=trim($this->perms);
        $this->enabled=trim($this->enabled);
        $this->user=trim($this->user);

        // Check parameters
        // Put here code to add control on parameters values

        // Update request
        $sql = "UPDATE ".MAIN_DB_PREFIX."menu SET";
        $sql.= " menu_handler='".$this->db->escape($this->menu_handler)."',";
        $sql.= " module='".$this->db->escape($this->module)."',";
        $sql.= " type='".$this->type."',";
        $sql.= " mainmenu='".$this->db->escape($this->mainmenu)."',";
        $sql.= " leftmenu='".$this->db->escape($this->leftmenu)."',";
        $sql.= " fk_menu='".$this->fk_menu."',";
        $sql.= " fk_mainmenu=".($this->fk_mainmenu?"'".$this->fk_mainmenu."'":"null").",";
        $sql.= " fk_leftmenu=".($this->fk_leftmenu?"'".$this->fk_leftmenu."'":"null").",";
        $sql.= " position='".$this->position."',";
        $sql.= " url='".$this->db->escape($this->url)."',";
        $sql.= " target='".$this->db->escape($this->target)."',";
        $sql.= " titre='".$this->db->escape($this->titre)."',";
        $sql.= " langs='".$this->db->escape($this->langs)."',";
        $sql.= " perms='".$this->db->escape($this->perms)."',";
        $sql.= " enabled='".$this->db->escape($this->enabled)."',";
        $sql.= " usertype='".$this->user."'";
        $sql.= " WHERE rowid=".$this->id;

        dol_syslog(get_class($this)."::update", LOG_DEBUG);
        $resql = $this->db->query($sql);
        if (! $resql)
        {
            $this->error="Error ".$this->db->lasterror();
            return -1;
        }

        return 1;
    }


    /**
     *   Load object in memory from database
     *
     *   @param		int		$id         Id object
     *   @param		User    $user       User that load
     *   @return	int         		<0 if KO, >0 if OK
     */
    function fetch($id, $user=null)
    {
        global $langs;

        $sql = "SELECT";
        $sql.= " t.rowid,";
        $sql.= " t.menu_handler,";
        $sql.= " t.entity,";
        $sql.= " t.module,";
        $sql.= " t.type,";
        $sql.= " t.mainmenu,";
        $sql.= " t.leftmenu,";
        $sql.= " t.fk_menu,";
        $sql.= " t.position,";
        $sql.= " t.url,";
        $sql.= " t.target,";
        $sql.= " t.titre,";
        $sql.= " t.langs,";
        $sql.= " t.perms,";
        $sql.= " t.enabled,";
        $sql.= " t.usertype as user,";
        $sql.= " t.tms";
        $sql.= " FROM ".MAIN_DB_PREFIX."menu as t";
        $sql.= " WHERE t.rowid = ".$id;

        dol_syslog(get_class($this)."::fetch", LOG_DEBUG);
        $resql=$this->db->query($sql);
        if ($resql)
        {
            if ($this->db->num_rows($resql))
            {
                $obj = $this->db->fetch_object($resql);

                $this->id    = $obj->rowid;

                $this->menu_handler = $obj->menu_handler;
                $this->entity = $obj->entity;
                $this->module = $obj->module;
                $this->type = $obj->type;
                $this->mainmenu = $obj->mainmenu;
                $this->leftmenu = $obj->leftmenu;
                $this->fk_menu = $obj->fk_menu;
                $this->position = $obj->position;
                $this->url = $obj->url;
                $this->target = $obj->target;
                $this->titre = $obj->titre;
                $this->langs = $obj->langs;
                $this->perms = $obj->perms;
                $this->enabled = str_replace("\"","'",$obj->enabled);
                $this->user = $obj->user;
                $this->tms = $this->db->jdate($obj->tms);
            }
            $this->db->free($resql);

            return 1;
        }
        else
        {
            $this->error="Error ".$this->db->lasterror();
            return -1;
        }
    }


    /**
     *  Delete object in database
     *
     *	@param	User	$user       User that delete
     *	@return	int					<0 if KO, >0 if OK
     */
    function delete($user)
    {
        global $conf, $langs;

        $sql = "DELETE FROM ".MAIN_DB_PREFIX."menu";
        $sql.= " WHERE rowid=".$this->id;

        dol_syslog(get_class($this)."::delete", LOG_DEBUG);
        $resql = $this->db->query($sql);
        if (! $resql)
        {
            $this->error="Error ".$this->db->lasterror();
            return -1;
        }

        return 1;
    }


    /**
     *  Initialise an instance with random values.
     *  Used to build previews or test instances.
     *	id must be 0 if object instance is a specimen.
     *
     *  @return	void
     */
    function initAsSpecimen()
    {
        $this->id=0;

        $this->menu_handler='all';
        $this->module='specimen';
        $this->type='top';
        $this->mainmenu='';
        $this->fk_menu='0';
        $this->position='';
        $this->url='http://dummy';
        $this->target='';
        $this->titre='Specimen menu';
        $this->langs='';
        $this->level='';
        $this->leftmenu='';
        $this->perms='';
        $this->enabled='';
        $this->user='';
        $this->tms='';
    }


    /**
     *	Load tabMenu array with top menu entries found into database.
     *
     * 	@param	string	$mymainmenu		Value for mainmenu to filter menu to load (always '')
     * 	@param	string	$myleftmenu		Value for leftmenu to filter menu to load (always '')
     * 	@param	int		$type_user		0=Menu for backoffice, 1=Menu for front office
     * 	@param	string	$menu_handler	Filter on name of menu_handler used (auguria, eldy...)
     * 	@param  array	$tabMenu       If array with menu entries already loaded, we put this array here (in most cases, it's empty)
     * 	@return	array					Return array with menu entries for top menu
     */
    function menuTopCharger($mymainmenu, $myleftmenu, $type_user, $menu_handler, &$tabMenu)
    {
        global $langs, $user, $conf;	// To export to dol_eval function
        global $mainmenu,$leftmenu;		// To export to dol_eval function

        $mainmenu=$mymainmenu;  // To export to dol_eval function
        $leftmenu=$myleftmenu;  // To export to dol_eval function

        $newTabMenu=array();
        foreach($tabMenu as $val)
        {
            if ($val['type']=='top') $newTabMenu[]=$val;
        }

        return $newTabMenu;
    }

    /**
     * 	Load entries found from database in this->newmenu array.
     *
     * 	@param	Menu	$newmenu        Menu array to complete (in most cases, it's empty, may be already initialized with some menu manager like eldy)
     * 	@param	string	$mymainmenu		Value for mainmenu to filter menu to load (often $_SESSION["mainmenu"])
     * 	@param	string	$myleftmenu		Value for leftmenu to filter menu to load (always '')
     * 	@param	int		$type_user		0=Menu for backoffice, 1=Menu for front office
     * 	@param	string	$menu_handler	Filter on name of menu_handler used (auguria, eldy...)
     * 	@param  array	$tabMenu       Array with menu entries already loaded
     * 	@return Menu    		       	Menu array for particular mainmenu value or full tabArray
     */
    function menuLeftCharger($newmenu, $mymainmenu, $myleftmenu, $type_user, $menu_handler, &$tabMenu)
    {
        global $langs, $user, $conf; 	// To export to dol_eval function
        global $mainmenu,$leftmenu; 	// To export to dol_eval function

        $mainmenu=$mymainmenu;  // To export to dol_eval function
        $leftmenu=$myleftmenu;  // To export to dol_eval function

		// Detect what is top mainmenu id
        $menutopid='';
        foreach($tabMenu as $key => $val)
        {
        	// Define menutopid of mainmenu
        	if (empty($menutopid) && $val['type'] == 'top' && $val['mainmenu'] == $mainmenu)
        	{
        		$menutopid=$val['rowid'];
        		break;
        	}
        }

        // We initialize newmenu with first already found menu entries
        $this->newmenu = $newmenu;

        // Now edit this->newmenu->list to add entries found into tabMenu that are childs of mainmenu claimed, using the fk_menu link (old method)
        $this->recur($tabMenu, $menutopid, 1);

        // Now update this->newmenu->list when fk_menu value is -1 (left menu added by modules with no top menu)
        foreach($tabMenu as $key => $val)
        {
        	//var_dump($tabMenu);
        	if ($val['fk_menu'] == -1 && $val['fk_mainmenu'] == $mainmenu)    // We found a menu entry not linked to parent with good mainmenu
        	{
        		//print 'Try to add menu (current is mainmenu='.$mainmenu.' leftmenu='.$leftmenu.') for '.join(',',$val).' fk_mainmenu='.$val['fk_mainmenu'].' fk_leftmenu='.$val['fk_leftmenu'].'<br>';
        		//var_dump($this->newmenu->liste);exit;

        		if (empty($val['fk_leftmenu']))
        		{
        			$this->newmenu->add($val['url'], $val['titre'], 0, $val['perms'], $val['target'], $val['mainmenu'], $val['leftmenu']);	// TODO Add position
        			//var_dump($this->newmenu->liste);
        		}
        		else
        		{
        			// Search first menu with this couple (mainmenu,leftmenu)=(fk_mainmenu,fk_leftmenu)
        			$searchlastsub=0;$lastid=0;$nextid=0;$found=0;
        			foreach($this->newmenu->liste as $keyparent => $valparent)
        			{
        				//var_dump($valparent);
        				if ($searchlastsub)    // If we started to search for last submenu
        				{
        					if ($valparent['level'] >= $searchlastsub) $lastid=$keyparent;
        					if ($valparent['level'] < $searchlastsub)
        					{
        						$nextid=$keyparent;
        						break;
        					}
        				}
        				if ($valparent['mainmenu'] == $val['fk_mainmenu'] && $valparent['leftmenu'] == $val['fk_leftmenu'])
        				{
        					//print "We found parent: keyparent='.$keyparent.' - level=".$valparent['level'].' - '.join(',',$valparent).'<br>';
        					// Now we look to find last subelement of this parent (we add at end)
        					$searchlastsub=($valparent['level']+1);
        					$lastid=$keyparent;
        					$found=1;
        				}
        			}
        			//print 'We must insert menu entry between entry '.$lastid.' and '.$nextid.'<br>';
        			if ($found) $this->newmenu->insert($lastid, $val['url'], $val['titre'], $searchlastsub, $val['perms'], $val['target'], $val['mainmenu'], $val['leftmenu']);
        		}
        	}
        }

        return $this->newmenu;
    }


    /**
     *  Load entries found in database into variable $tabMenu. Note that only "database menu entries" are loaded here, hardcoded will not be present into output.
     *
     *  @param	string	$mymainmenu     Value for mainmenu that defined mainmenu
     *  @param	string	$myleftmenu     Value for left that defined leftmenu
     *  @param  int		$type_user      Looks for menu entry for 0=Internal users, 1=External users
     *  @param  string	$menu_handler   Name of menu_handler used ('auguria', 'eldy'...)
     *  @param  array	$tabMenu       Array to store new entries found (in most cases, it's empty, but may be alreay filled)
     *  @return int     		        >0 if OK, <0 if KO
     */
    function menuLoad($mymainmenu, $myleftmenu, $type_user, $menu_handler, &$tabMenu)
    {
        global $langs, $user, $conf; // To export to dol_eval function
        global $mainmenu, $leftmenu; // To export to dol_eval function

        $menutopid=0;
        $mainmenu=$mymainmenu;  // To export to dol_eval function
        $leftmenu=$myleftmenu;  // To export to dol_eval function

        $sql = "SELECT m.rowid, m.type, m.module, m.fk_menu, m.fk_mainmenu, m.fk_leftmenu, m.url, m.titre, m.langs, m.perms, m.enabled, m.target, m.mainmenu, m.leftmenu, m.position";
        $sql.= " FROM ".MAIN_DB_PREFIX."menu as m";
        $sql.= " WHERE m.entity IN (0,".(! empty($conf->multicompany->enabled) && ! empty($conf->multicompany->transverse_mode)?"1,":"").$conf->entity.")";
        $sql.= " AND m.menu_handler IN ('".$menu_handler."','all')";
        if ($type_user == 0) $sql.= " AND m.usertype IN (0,2)";
        if ($type_user == 1) $sql.= " AND m.usertype IN (1,2)";
        $sql.= " ORDER BY m.position, m.rowid";
		//print $sql;

//$tmp1=dol_microtime_float();
//print '>>> 1 0<br>';
        dol_syslog(get_class($this)."::menuLoad mymainmenu=".$mymainmenu." myleftmenu=".$myleftmenu." type_user=".$type_user." menu_handler=".$menu_handler." tabMenu size=".count($tabMenu)."", LOG_DEBUG);
        $resql = $this->db->query($sql);
        if ($resql)
        {
            $numa = $this->db->num_rows($resql);

            $a = 0;
            $b = 0;
            $oldrowid=0;
            while ($a < $numa)
            {
                //$objm = $this->db->fetch_object($resql);
                $menu = $this->db->fetch_array($resql);

                // Define $right
                $perms = true;
                if ($menu['perms'])
                {
                	$tmpcond=$menu['perms'];
                	if ($leftmenu == 'all') $tmpcond=preg_replace('/\$leftmenu\s*==\s*["\'a-zA-Z_]+/','1==1',$tmpcond);	// Force part of condition to true
                	$perms = verifCond($tmpcond);
                    //print "verifCond rowid=".$menu['rowid']." ".$tmpcond.":".$perms."<br>\n";
                }

                // Define $enabled
                $enabled = true;
                if ($menu['enabled'])
                {
                	$tmpcond=$menu['enabled'];
                	if ($leftmenu == 'all') $tmpcond=preg_replace('/\$leftmenu\s*==\s*["\'a-zA-Z_]+/','1==1',$tmpcond);	// Force part of condition to true
                    $enabled = verifCond($tmpcond);
                }

                // Define $title
                if ($enabled)
                {
                	$title = $langs->trans($menu['titre']);
                    if ($title == $menu['titre'])   // Translation not found
                    {
                        if (! empty($menu['langs']))    // If there is a dedicated translation file
                        {
                        	//print 'Load file '.$menu['langs'].'<br>';
                            $langs->load($menu['langs']);
                        }

                        if (preg_match("/\//",$menu['titre'])) // To manage translation when title is string1/string2
                        {
                            $tab_titre = explode("/",$menu['titre']);
                            $title = $langs->trans($tab_titre[0])."/".$langs->trans($tab_titre[1]);
                        }
                        else if (preg_match('/\|\|/',$menu['titre'])) // To manage different translation (Title||AltTitle@ConditionForAltTitle)
                        {
                        	$tab_title = explode("||",$menu['titre']);
                        	$alt_title = explode("@",$tab_title[1]);
                        	$title_enabled = verifCond($alt_title[1]);
                        	$title = ($title_enabled ? $langs->trans($alt_title[0]) : $langs->trans($tab_title[0]));
                        }
                        else
                        {
                            $title = $langs->trans($menu['titre']);
                        }
                    }
//$tmp4=dol_microtime_float();
//print '>>> 3 '.($tmp4 - $tmp3).'<br>';

                    // We complete tabMenu
                    $tabMenu[$b]['rowid']       = $menu['rowid'];
                    $tabMenu[$b]['module']      = $menu['module'];
                    $tabMenu[$b]['fk_menu']     = $menu['fk_menu'];
                    $tabMenu[$b]['url']         = $menu['url'];
                    if (! preg_match("/^(http:\/\/|https:\/\/)/i",$tabMenu[$b]['url']))
                    {
                        if (preg_match('/\?/',$tabMenu[$b]['url'])) $tabMenu[$b]['url'].='&amp;idmenu='.$menu['rowid'];
                        else $tabMenu[$b]['url'].='?idmenu='.$menu['rowid'];
                    }
                    $tabMenu[$b]['titre']       = $title;
                    $tabMenu[$b]['target']      = $menu['target'];
                    $tabMenu[$b]['mainmenu']    = $menu['mainmenu'];
                    $tabMenu[$b]['leftmenu']    = $menu['leftmenu'];
                    $tabMenu[$b]['perms']       = $perms;
                    $tabMenu[$b]['enabled']     = $enabled;
                    $tabMenu[$b]['type']        = $menu['type'];
                    //$tabMenu[$b]['langs']       = $menu['langs'];
                    $tabMenu[$b]['fk_mainmenu'] = $menu['fk_mainmenu'];
                    $tabMenu[$b]['fk_leftmenu'] = $menu['fk_leftmenu'];
                    $tabMenu[$b]['position']    = $menu['position'];

                    $b++;
                }

                $a++;
            }
            $this->db->free($resql);
            return 1;
        }
        else
        {
            dol_print_error($this->db);
            return -1;
        }
    }

    /**
     *  Complete this->newmenu with menu entry found in $tab
     *
     *  @param  array	$tab			Tab array
     *  @param  int		$pere			Id of parent
     *  @param  int		$level			Level
     *  @return	void
     */
    private function recur($tab, $pere, $level)
    {
        // Loop on tab array
        $num = count($tab);
        for ($x = 0; $x < $num; $x++)
        {
            //si un element a pour pere : $pere
            if ( (($tab[$x]['fk_menu'] >= 0 && $tab[$x]['fk_menu'] == $pere)) && $tab[$x]['enabled'])
            {
                $this->newmenu->add($tab[$x]['url'], $tab[$x]['titre'], ($level-1), $tab[$x]['perms'], $tab[$x]['target'], $tab[$x]['mainmenu'], $tab[$x]['leftmenu']);
                $this->recur($tab, $tab[$x]['rowid'], ($level+1));
            }
        }
   }

}

