<?php
	/**************************************************************************\
	* phpGroupWare API - Categories                                            *
	* This file written by Joseph Engo <jengo@phpgroupware.org>                *
	* Category manager                                                         *
	* Copyright (C) 2000, 2001 Joseph Engo                                     *
	* -------------------------------------------------------------------------*
	* This library is part of the phpGroupWare API                             *
	* http://www.phpgroupware.org/api                                          * 
	* ------------------------------------------------------------------------ *
	* This library is free software; you can redistribute it and/or modify it  *
	* under the terms of the GNU Lesser General Public License as published by *
	* the Free Software Foundation; either version 2.1 of the License,         *
	* or any later version.                                                    *
	* This library 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 Lesser General Public License for more details.              *
	* You should have received a copy of the GNU Lesser General Public License *
	* along with this library; if not, write to the Free Software Foundation,  *
	* Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA            *
	\**************************************************************************/

	/* $Id$ */
		/*!
		@class categories
		@abstract class adds ability for applications to make use of categories
		@discussion examples can be found in notes app
		*/
	class categories
	{
		var $account_id;
		var $app_name;
		var $cats;
		var $db;
		var $total_records;
		var $grants;

		/*!
		@function filter
		@abstract ?
		@param $type string
		@result string either subs or mains
		*/
		function filter($type)
		{
			switch ($type)
			{
				case 'subs':         $s = " and cat_parent != '0'"; break;
				case 'mains':        $s = " and cat_parent = '0'"; break;
				case 'appandmains':  $s = " and cat_appname='" . $this->app_name . "' and cat_parent ='0'"; break;
				case 'appandsubs':   $s = " and cat_appname='" . $this->app_name . "' and cat_parent !='0'"; break;
				default: return False;
			}
			return $s;
		}
		/*!
		@function total
		@abstract returns the total number of categories for app, subs or mains
		@param $for one of either 'app' 'subs' or 'mains'
		@result integer count of categories
		*/
		function total($for = 'app')
		{
			switch($for)
			{
				case 'app':          $w = " where cat_appname='" . $this->app_name . "'"; break;
				case 'appandmains':  $w = " where cat_appname='" . $this->app_name . "' and cat_parent ='0'";
				case 'appandsubs':   $w = " where cat_appname='" . $this->app_name . "' and cat_parent !='0'";
				case 'subs':         $w = " where cat_parent != '0'"; break;
				case 'mains':        $w = " where cat_parent = '0'"; break;
				default:	return False;
			
			}
			$this->db->query("select count(*) from phpgw_categories $w",__LINE__,__FILE__);
			$this->db->next_record();
			
			return $this->db->f(0);
		}

		/*!
		@function return_array
		@abstract return an array populated with categories
		@param $type string defaults to 'all'
		@param $start ?
		@param $limit ?
		@param $query string defaults to ''
		@param $sort string sort order, either defaults to 'ASC'
		@param $order order by
		@result $cats array
		*/
		function return_array($type,$start,$limit,$query = '',$sort = '',$order = '',$public = False, $parent_id = '')
		{
			global $phpgw, $phpgw_info;

			if ($public)
			{
				$public_cats = " OR cat_appname='phpgw' ";
			}

			$filter = $this->filter($type);

			if (!$sort)
			{
				$sort = "ASC";
			}

			if ($order)
			{
				$ordermethod = " order by $order $sort";
			}
			else
			{
				$ordermethod = " order by cat_main, cat_level, cat_name asc";
			}

			if (is_array($this->grants))
			{
			    $grants = $this->grants;
			    while(list($user) = each($grants))
			    {
                        	$public_user_list[] = $user;
			    }
			    reset($public_user_list);
                                $grant_cats = " (cat_owner='" . $this->account_id . "' OR cat_access='public' OR cat_owner in(" . implode(',',$public_user_list) . ")) ";			    
			}
			else 
			{
			    $grant_cats = " (cat_owner='" . $this->account_id . "' OR cat_access='public') ";
			}

			if ($parent_id)
			{
				$parent_filter = " and cat_parent='$parent_id'";
			}

			if ($query)
			{
				$querymethod = " AND (cat_name like '%$query%' OR cat_description like '%$query%') ";
			}
	
			$sql = "SELECT * from phpgw_categories WHERE (cat_appname='" . $this->app_name . "' $public_cats $parent_filter) AND " 
					. " $grant_cats $querymethod $filter $ordermethod";

			if ($limit)
			{
			    $limitmethod = " " . $this->db->limit($start);
			}

			    $this->db2->query($sql,__LINE__,__FILE__);
			    $this->total_records = $this->db2->num_rows();
			    $this->db->query($sql . $limitmethod,__LINE__,__FILE__);
			    //echo '<b>TEST:</b>' . $sql;

			$i = 0;
			while ($this->db->next_record())
			{
				$cats[$i]['id']			= $this->db->f('cat_id');
				$cats[$i]['owner']		= $this->db->f('cat_owner');
				$cats[$i]['access']		= $this->db->f('cat_access');
				$cats[$i]['app_name']		= $this->db->f('cat_appname');
				$cats[$i]['main']		= $this->db->f('cat_main');
				$cats[$i]['level']		= $this->db->f('cat_level');
				$cats[$i]['parent']		= $this->db->f('cat_parent');
				$cats[$i]['name']		= $this->db->f('cat_name');
				$cats[$i]['description']	= $this->db->f('cat_description');
				$cats[$i]['data']       	= $this->db->f('cat_data');
				$i++;
	 		}
			return $cats;
		}

		/*!
		@function return_single
		@abstract return single
		@param $id integer id of category 
		@result $cats  array populated with 
		*/
		function return_single($id = '')
		{

			$this->db->query("select * from phpgw_categories where cat_id='$id' and "
				. "cat_appname='" . $this->app_name . "'",__LINE__,__FILE__);
	    
			if ($this->db->next_record()) 
			{
				$cats[0]['id']			= $this->db->f('cat_id');
				$cats[0]['owner']		= $this->db->f('cat_owner');
				$cats[0]['access']		= $this->db->f('cat_access');
				$cats[0]['main']		= $this->db->f('cat_main');
				$cats[0]['level']		= $this->db->f('cat_level');
				$cats[0]['parent']		= $this->db->f('cat_parent');
				$cats[0]['name']		= $this->db->f('cat_name');
				$cats[0]['description']		= $this->db->f('cat_description');
				$cats[0]['data']		= $this->db->f('cat_data');
			}
		    return $cats;
		}
		/*!
		@function categories
		@abstract constructor for categories class
		@param $accountid account id
		@param $app_name app name defaults to current app
		*/
		function categories($accountid = '',$app_name = '')
		{
			global $phpgw, $phpgw_info;

			$account_id = get_account_id($accountid);

			if (! $app_name)
			{
				$app_name   = $phpgw_info['flags']['currentapp'];
			}

			$this->account_id	= $account_id;
			$this->app_name		= $app_name;
			$this->db		= $phpgw->db;
			$this->db2		= $this->db;
			$this->total_records	= $this->db->num_rows();
			$this->grants		= $phpgw->acl->get_grants($app_name);
			$this->cats		= $this->return_array($type,$start,$limit,$query,$sort,$order,$public);
		}

		// Return into a select box, list or other formats
		/*!
		@function formated_list
		@abstract return into a select box, list or other formats
		@param $format currently only supports select (select box)
		@param $type string - subs or mains
		@param $selected ?
		@result $s array - populated with categories
		*/
		function formated_list($format,$type,$selected = '',$public = False)
		{
			global $phpgw;
			$filter = $this->filter($type);

			if ($public)
			{
				$public_cats = " OR cat_appname='phpgw' ";
			}

			if ($format == 'select')
			{
				$cats = $this->return_array($type,$start,$limit = False,$query,$sort,$order,$public);

				for ($i=0;$i<count($cats);$i++)
				{
					$s .= '<option value="' . $cats[$i]['id'] . '"';
					if ($cats[$i]['id'] == $selected)
					{
						$s .= ' selected';
					}
					$s .= '>' . $phpgw->strip_html($cats[$i]['name']);
					if ($cats[$i]['app_name'] == 'phpgw') 
					{
					$s .=  '&lt;' . lang('Global') . '&gt;';
					}
					$s .=  '</option>';
				}
				return $s;
			}
		}
		/*!
		@function add
		@abstract add categories
		@param $cat_name category name
		@param $cat_parent category parent
		@param $cat_description category description defaults to ''
		@param $cat_data category data defaults to ''
		*/
		function add($cat_name,$cat_parent,$cat_description = '', $cat_data = '',$cat_access = '',$cat_main)
		{

		    if ($cat_parent && (!$cat_main))
		    {
			$cat_main = $cat_parent;
		    }

		    if ($cat_main && ($cat_main > 0))
		    {
			if (!$cat_parent)
			{
			    $cat_parent = $cat_main;
			}

			$this->db2->query("select cat_level from phpgw_categories where cat_id='$cat_parent'",__LINE__,__FILE__);
			$this->db2->next_record();
			$cat_level = $this->db2->f('cat_level')+1;

			$this->db->query("insert into phpgw_categories (cat_parent,cat_owner,cat_access,cat_appname,cat_name,"
                       . "cat_description,cat_data,cat_main,cat_level) values ('$cat_parent','" . $this->account_id . "','$cat_access','"
                       . $this->app_name . "','" . addslashes($cat_name) . "','" . addslashes($cat_description)
                       . "','$cat_data','$cat_main','$cat_level')",__LINE__,__FILE__);
		    }
		    else 
		    {
			$this->db->query("insert into phpgw_categories (cat_parent,cat_owner,cat_access,cat_appname,cat_name,"
                       . "cat_description,cat_data,cat_main,cat_level) values ('$cat_parent','" . $this->account_id . "','$cat_access','"
                       . $this->app_name . "','" . addslashes($cat_name) . "','" . addslashes($cat_description)
                       . "','$cat_data','$cat_main','$cat_level')",__LINE__,__FILE__);

			$this->db2->query("select max(cat_id) as max from phpgw_categories",__LINE__,__FILE__);
			$this->db2->next_record();
			$this->db->query("update phpgw_categories set cat_main='" . $this->db2->f('max') . "' where cat_id='"
					. $this->db2->f('max') . "'",__LINE__,__FILE__);     
		    }

		}
		/*!
		@function delete
		@abstract delete category
		@param $cat_id int - category id
		*/
		function delete($cat_id,$subs = 'False')
		{

		    if ($subs == 'True')
		    {
		    $subdelete = " OR cat_parent='$cat_id'"; 
		    }

		    $this->db->query("delete from phpgw_categories where cat_id='$cat_id' $subdelete and cat_appname='"
				    . $this->app_name . "'",__LINE__,__FILE__);
		}
		/*!
		@function edit
		@abstract edit a category
		@param $cat_id int - category id
		@param $cat_parent category parent
		@param $cat_description category description defaults to ''
		@param $cat_data category data defaults to ''
		*/
		function edit($cat_id,$cat_parent,$cat_name,$cat_description = '',$cat_data = '',$cat_access = '',$cat_main)
		{
	
		    if ($cat_parent && (!$cat_main))	
		    {
			$cat_main = $cat_parent;
		    }

                    if ($cat_main && ($cat_main > 0))
                    {
			if (!$cat_parent)
			{
			    $cat_parent = $cat_main;
			}

                        $this->db2->query("select cat_level from phpgw_categories where cat_id='$cat_parent'",__LINE__,__FILE__);
                        $this->db2->next_record();
                        $cat_level = $this->db2->f('cat_level')+1;

			$this->db->query("update phpgw_categories set cat_name='" . addslashes($cat_name) . "', "
                    		. "cat_description='" . addslashes($cat_description) . "', cat_data='"
                    		. "$cat_data', cat_parent='$cat_parent', cat_access='$cat_access', cat_main='$cat_main', cat_level='$cat_level' "
				. "where cat_appname='" . $this->app_name . "' and cat_id='$cat_id'",__LINE__,__FILE__);
		    }
                    else
                    {
                	$this->db->query("update phpgw_categories set cat_name='" . addslashes($cat_name) . "', "
                    	    . "cat_description='" . addslashes($cat_description) . "', cat_data='"
                    	    . "$cat_data', cat_parent='$cat_parent', cat_access='$cat_access', cat_main='$cat_id', cat_level='$cat_level' "
                    	    . "where cat_appname='" . $this->app_name . "' and cat_id='$cat_id'",__LINE__,__FILE__);

                    }
		}

		function name2id($cat_name)
		{
			$this->db->query("select cat_id from phpgw_categories where cat_name='"
                        . "$cat_name'",__LINE__,__FILE__);
			$this->db->next_record();

			return $this->db->f('cat_id');
		}

		function id2name($cat_id)
		{
			$this->db->query("select cat_name from phpgw_categories where cat_id='"
                        . "$cat_id'",__LINE__,__FILE__);
			$this->db->next_record();

			if ($this->db->f('cat_name'))
			{
				return $this->db->f('cat_name');
			}
			else
			{
				return '--';
			}		
		}

		/*!
		@function return_name
		@abstract return category name given $cat_id
		@param $cat_id
		@result cat_name category name
		*/
		// NOTE: This is only a temp wrapper, use id2name() to keep things matching across the board. (jengo)
		function return_name($cat_id)
		{
			return $this->id2name($cat_id);
		}

		/*!
		@function exists
		@abstract used for checking if a category name exists
		@param $type subs or mains
		@param $cat_name category name
		@result boolean true or false
		*/
		function exists($type,$cat_name = '',$cat_id = '')
		{
		    $filter = $this->filter($type);

		    if ($cat_name)
		    {
			$cat_exists = " AND cat_name='" . addslashes($cat_name) . "' "; 
		    }
		    if ($cat_id)
		    {
                        $cat_exists = " AND cat_parent='$cat_id' ";
		    }
		    if ($cat_name && $cat_id)
		    {
			$cat_exists = " AND cat_name='" . addslashes($cat_name) . "' AND cat_id != '$cat_id' ";
		    }

                    $this->db->query("select count(*) from phpgw_categories where cat_appname='"
                       . $this->app_name . "' $cat_exists $filter",__LINE__,__FILE__);

		    $this->db->next_record();

		    if ($this->db->f(0))
		    {
			return True;
		    }
		    else
		    {
			return False;
		    }
		}

		function return_main($cat_id = '')
		{

                    $this->db->query("select cat_main from phpgw_categories where cat_id='$cat_id'",__LINE__,__FILE__);

                    $this->db->next_record();

                    $cat_main = $this->db->f('cat_main');

                    return $cat_main;
		}
	}
?>