<?php

/*
Copyright (c) 2007, Till Brehm, projektfarm Gmbh
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name of ISPConfig nor the names of its contributors
      may be used to endorse or promote products derived from this software without
      specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

class listform {

    private $debug = 0;
    private $errorMessage;
    public  $listDef;
    public  $searchValues;
    public  $pagingHTML;
    private $pagingValues;
    private $searchChanged = 0;
    private $module;
	public $wordbook;

    public function loadListDef($file, $module = '')
    {
        global $app,$conf;
        if(!is_file($file)){
            die("List-Definition: $file not found.");
        }
        require_once($file);
        $this->listDef = $liste;
        $this->module = $module;
		
		//* Fill datasources
        if(@is_array($this->listDef['item'])) {
		    foreach($this->listDef['item'] as $key => $field) {
			    if(@is_array($field['datasource'])) {
                    $this->listDef['item'][$key]['value'] = $this->getDatasourceData($field);
                }
		    }
		}
        
		//* Set local Language File
		$lng_file = 'lib/lang/'.$_SESSION['s']['language'].'_'.$this->listDef['name'].'_list.lng';
		if(!file_exists($lng_file)) $lng_file = 'lib/lang/en_'.$this->listDef['name'].'_list.lng';
		include($lng_file);
		
		$this->wordbook = $wb;
		
        return true;
    }
		
	/**
    * Get the key => value array of a form filed from a datasource definitiom
    *
    * @param field = array with field definition
    * @param record = Dataset as array
    * @return array key => value array for the value field of a form
    */
    private function getDatasourceData($field)
    {
        global $app;
        $values = array();

        if($field['datasource']['type'] == 'SQL') {

            //** Preparing SQL string. We will replace some common placeholders
            $querystring = $field['datasource']['querystring'];
            $querystring = str_replace('{USERID}', $_SESSION['s']['user']['userid'], $querystring);
            $querystring = str_replace('{GROUPID}', $_SESSION['s']['user']['default_group'], $querystring);
            $querystring = str_replace('{GROUPS}', $_SESSION['s']['user']['groups'], $querystring);
            //TODO:
            //$table_idx = $this->formDef['db_table_idx'];
            //$querystring = str_replace("{RECORDID}",$record[$table_idx],$querystring);
			$app->uses('tform');
            $querystring = str_replace("{AUTHSQL}",$app->tform->getAuthSQL('r'),$querystring);
            $querystring = str_replace("{AUTHSQL-A}",$app->tform->getAuthSQL('r','a'),$querystring);
            $querystring = str_replace("{AUTHSQL-B}",$app->tform->getAuthSQL('r','b'),$querystring);

            //* Getting the records
            $tmp_records = $app->db->queryAllRecords($querystring);
            if($app->db->errorMessage != '') die($app->db->errorMessage);
            if(is_array($tmp_records)) {
                $key_field = $field['datasource']['keyfield'];
                $value_field = $field['datasource']['valuefield'];
                foreach($tmp_records as $tmp_rec) {
                    $tmp_id = $tmp_rec[$key_field];
                    $values[$tmp_id] = $tmp_rec[$value_field];
                }
            }
        }

        if($field['datasource']['type'] == 'CUSTOM') {
            //* Calls a custom class to validate this record
            if($field['datasource']['class'] != '' and $field['datasource']['function'] != '') {
                $datasource_class = $field['datasource']['class'];
                $datasource_function = $field['datasource']['function'];
                $app->uses($datasource_class);
				$record = array();
                $values = $app->$datasource_class->$datasource_function($field, $record);
            } else {
                $this->errorMessage .= "Custom datasource class or function is empty<br />\r\n";
            }
        }
        return $values;
    }

    public function getSearchSQL($sql_where = '') 
    {
        global $app, $db;

        //* Get config variable
        $list_name = $this->listDef['name'];
        $search_prefix = $this->listDef['search_prefix'];
		
		if(isset($_REQUEST['Filter']) && !isset($_SESSION['search'][$list_name])) {
			//* Jump back to page 1 of the list when a new search gets started.
			$_SESSION['search'][$list_name]['page'] = 0;
		}

        //* store retrieval query
        if(@is_array($this->listDef['item'])) { 
            foreach($this->listDef['item'] as $i) {
                $field = $i['field'];

                //* The search string has been changed
                if(isset($_REQUEST[$search_prefix.$field]) && isset($_SESSION['search'][$list_name][$search_prefix.$field]) && $_REQUEST[$search_prefix.$field] != $_SESSION['search'][$list_name][$search_prefix.$field]){
                        $this->searchChanged = 1;
					    
					    //* Jump back to page 1 of the list when search has changed.
					    $_SESSION['search'][$list_name]['page'] = 0;
                }

                //* Store field in session
                if(isset($_REQUEST[$search_prefix.$field]) && !stristr($_REQUEST[$search_prefix.$field],"'")){
                    $_SESSION['search'][$list_name][$search_prefix.$field] = $_REQUEST[$search_prefix.$field];
					if(preg_match("/['\\\\]/", $_SESSION['search'][$list_name][$search_prefix.$field])) $_SESSION['search'][$list_name][$search_prefix.$field] = '';
				}

                if(isset($i['formtype']) && $i['formtype'] == 'SELECT'){
                    if(is_array($i['value'])) {
                        $out = '<option value=""></option>';
                        foreach($i['value'] as $k => $v) {
                            // TODO: this could be more elegant
                            $selected = (isset($_SESSION['search'][$list_name][$search_prefix.$field]) 
                                            && $k == $_SESSION['search'][$list_name][$search_prefix.$field] 
                                            && $_SESSION['search'][$list_name][$search_prefix.$field] != '')
                                            ? ' SELECTED' : '';
                            $out .= "<option value='$k'$selected>$v</option>\r\n";
                        }
                    }
                        $this->searchValues[$search_prefix.$field] = $out;
                } else {
                    if(isset($_SESSION['search'][$list_name][$search_prefix.$field])){
                        $this->searchValues[$search_prefix.$field] = htmlspecialchars($_SESSION['search'][$list_name][$search_prefix.$field]);
                    }
                }
            }
        }
        //* Store variables in object | $this->searchValues = $_SESSION["search"][$list_name];
        if(@is_array($this->listDef['item'])) { 
            foreach($this->listDef['item'] as $i) {
                $field = $i['field'];
                // if($_REQUEST[$search_prefix.$field] != '') $sql_where .= " $field ".$i["op"]." '".$i["prefix"].$_REQUEST[$search_prefix.$field].$i["suffix"]."' and";
		        if(isset($_SESSION['search'][$list_name][$search_prefix.$field]) && $_SESSION['search'][$list_name][$search_prefix.$field] != ''){
                    $sql_where .= " $field ".$i['op']." '".$app->db->quote($i['prefix'].$_SESSION['search'][$list_name][$search_prefix.$field].$i['suffix'])."' and";
                }
            }
        }
        return ( $sql_where != '' ) ? $sql_where = substr($sql_where,0,-3) : '1';
    }

    public function getPagingSQL($sql_where = '1') 
    {
        global $app, $conf;
        
        //* Add Global Limit from selectbox
        if(!empty($_POST['search_limit']) AND $app->functions->intval($_POST['search_limit'])){
			$_SESSION['search']['limit'] = $app->functions->intval($_POST['search_limit']);
		}

        //* Get Config variables
        $list_name          = $this->listDef['name'];
        $search_prefix      = $this->listDef['search_prefix'];
        $records_per_page   = (empty($_SESSION['search']['limit']) ? $app->functions->intval($this->listDef['records_per_page']) : $app->functions->intval($_SESSION['search']['limit'])) ;
        $table              = $this->listDef['table'];

        //* set PAGE to zero, if in session not set
        if(!isset($_SESSION['search'][$list_name]['page']) || $_SESSION['search'][$list_name]['page'] == ''){
            $_SESSION['search'][$list_name]['page'] = 0;
        }

        //* set PAGE to worth request variable "PAGE" - ? setze page auf wert der request variablen "page"
        if(isset($_REQUEST["page"])) $_SESSION["search"][$list_name]["page"] = $app->functions->intval($_REQUEST["page"]);

        //* PAGE to 0 set, if look for themselves ?  page auf 0 setzen, wenn suche sich ge�ndert hat.
        if($this->searchChanged == 1) $_SESSION['search'][$list_name]['page'] = 0;

        $sql_von = $app->functions->intval($_SESSION['search'][$list_name]['page'] * $records_per_page);
        $record_count = $app->db->queryOneRecord("SELECT count(*) AS anzahl FROM $table WHERE $sql_where");
        $pages = $app->functions->intval(($record_count['anzahl'] - 1) / $records_per_page);


        $vars['list_file']      = $_SESSION['s']['module']['name'].'/'.$this->listDef['file'];
        $vars['page']           = $_SESSION['search'][$list_name]['page'];
        $vars['last_page']      = $_SESSION['search'][$list_name]['page'] - 1;
        $vars['next_page']      = $_SESSION['search'][$list_name]['page'] + 1;
        $vars['pages']          = $pages;
        $vars['max_pages']      = $pages + 1;
        $vars['records_gesamt'] = $record_count['anzahl'];
        $vars['page_params']    = (isset($this->listDef['page_params'])) ? $this->listDef['page_params'] : '';
        //$vars['module'] = $_SESSION['s']['module']['name'];

        if($_SESSION['search'][$list_name]['page'] > 0) $vars['show_page_back'] = 1;
        if($_SESSION['search'][$list_name]['page'] <= $vars['pages'] - 1) $vars['show_page_next'] = 1;

        $this->pagingValues = $vars;
        $this->pagingHTML = $this->getPagingHTML($vars);

        //* Return limit sql
        return "LIMIT $sql_von, $records_per_page";
    }

    public function getPagingHTML($vars)
    {
        global $app;
        
        // we want to show at max 17 page numbers (8 left, current, 8 right)
        $show_pages_count = 17;
        
        $show_pages = array(0); // first page
        if($vars['pages'] > 0) $show_pages[] = $vars['pages']; // last page
        for($p = $vars['page'] - 2; $p <= $vars['page'] + 2; $p++) { // surrounding pages
            if($p > 0 && $p < $vars['pages']) $show_pages[] = $p;
        }
        
        $l_start = $vars['page'] - 13;
        $l_start -= ($l_start % 10) + 1;
        $h_end = $vars['page'] + 23;
        $h_end -= ($h_end % 10) + 1;
        for($p = $l_start; $p <= $h_end; $p += 10) { // surrounding pages
            if($p > 0 && $p < $vars['pages'] && !in_array($p, $show_pages, true) && count($show_pages) < $show_pages_count) $show_pages[] = $p;
        }
        
        $l_start = $vars['page'] - 503;
        $l_start -= ($l_start % 100) + 1;
        $h_end = $vars['page'] + 603;
        $h_end -= ($h_end % 100) + 1;
        for($p = $l_start; $p <= $h_end; $p += 100) { // surrounding pages
            if($p > 0 && $p < $vars['pages'] && !in_array($p, $show_pages, true) && count($show_pages) < $show_pages_count) $show_pages[] = $p;
        }
        
        $l_start = $vars['page'] - 203;
        $l_start -= ($l_start % 25) + 1;
        $h_end = $vars['page'] + 228;
        $h_end -= ($h_end % 25) + 1;
        for($p = $l_start; $p <= $h_end; $p += 25) { // surrounding pages
            if($p > 0 && $p < $vars['pages'] && abs($p - $vars['page']) > 30 && !in_array($p, $show_pages, true) && count($show_pages) < $show_pages_count) $show_pages[] = $p;
        }
        
        sort($show_pages);
        $show_pages = array_unique($show_pages);
        
        //* Show Back 
        if(isset($vars['show_page_back']) && $vars['show_page_back'] == 1){
        $content = '<a class="btn-page first-page" href="'."javascript:loadContent('".$vars['list_file'].'?page=0'.$vars['page_params']."');".'">'
                    .'<img src="themes/'.$_SESSION['s']['theme'].'/icons/x16/arrow_stop_180.png"></a> &nbsp; ';
            $content .= '<a class="btn-page previous-page" href="'."javascript:loadContent('".$vars['list_file'].'?page='.$vars['last_page'].$vars['page_params']."');".'">'
                        .'<img src="themes/'.$_SESSION['s']['theme'].'/icons/x16/arrow_180.png"></a> &nbsp; ';
        }
        $content .= ' '.$this->lng('page_txt').' ';
        $prev = -1;
        foreach($show_pages as $p) {
            if($prev != -1 && $p > $prev + 1) $content .= '<span class="page-spacer">...</span>';
            $content .= '<a class="link-page' . ($p == $vars['page'] ? ' current-page' : '') . '" href="'."javascript:loadContent('".$vars['list_file'].'?page='.$p.$vars['page_params']."');".'">'. ($p+1) .'</a>';
            $prev = $p;
        }
        //.$vars['next_page'].' '.$this->lng('page_of_txt').' '.$vars['max_pages'].' &nbsp; ';
        //* Show Next
        if(isset($vars['show_page_next']) && $vars['show_page_next'] == 1){
            $content .= '<a class="btn-page next-page" href="'."javascript:loadContent('".$vars['list_file'].'?page='.$vars['next_page'].$vars['page_params']."');".'">'
                        .'<img src="themes/'.$_SESSION['s']['theme'].'/icons/x16/arrow.png"></a> &nbsp; ';
        $content .= '<a class="btn-page last-page" href="'."javascript:loadContent('".$vars['list_file'].'?page='.$vars['pages'].$vars['page_params']."');".'">'
                    .'<img src="themes/'.$_SESSION['s']['theme'].'/icons/x16/arrow_stop.png"></a>';
        }
        return $content;
    }
		
	public function getPagingHTMLasTXT($vars)
    {
        global $app;
        $content = '[<a href="'.$vars['list_file'].'?page=0'.$vars['page_params'].'">|&lt;&lt; </a>]';
        if($vars['show_page_back'] == 1){
            $content .= '[<< <a href="'.$vars['list_file'].'?page='.$vars['last_page'].$vars['page_params'].'">'.$app->lng('page_back_txt').'</a>] ';
        }
        $content .= ' '.$this->lng('page_txt').' '.$vars['next_page'].' '.$this->lng('page_of_txt').' '.$vars['max_pages'].' ';
        if($vars['show_page_next'] == 1){
            $content .= '[<a href="'.$vars['list_file'].'?page='.$vars['next_page'].$vars['page_params'].'">'.$app->lng('page_next_txt').' >></a>] ';
        }
        $content .= '[<a href="'.$vars['list_file'].'?page='.$vars['pages'].$vars['page_params'].'"> &gt;&gt;|</a>]';
        return $content;
    }

    public function getSortSQL()
    {
        global $app, $conf;
        //* Get config vars
        $sort_field = $this->listDef['sort_field'];
        $sort_direction = $this->listDef['sort_direction'];
        return ($sort_field != '' && $sort_direction != '') ? "ORDER BY $sort_field $sort_direction" : '';
    }

    public function decode($record) 
    {
        global $conf, $app;
        if(is_array($record) && count($record) > 0 && is_array($this->listDef['item'])) {
            foreach($this->listDef['item'] as $field){
                $key = $field['field'];
                //* Apply filter to record value.
                if(isset($field['filters']) && is_array($field['filters'])) {
                    $app->uses('tform');
                    $record[$key] = $app->tform->filterField($key, (isset($record[$key]))?$record[$key]:'', $field['filters'], 'SHOW');
                }
				if(isset($record[$key])) {
                	switch ($field['datatype']){
                    case 'VARCHAR':
                    case 'TEXT':
                        $record[$key] = htmlentities(stripslashes($record[$key]),ENT_QUOTES,$conf["html_content_encoding"]);
                         break;

                    case 'DATETSTAMP':
                        if ($record[$key] > 0) {
							// is value int?
							if (preg_match("/^[0-9]+[\.]?[0-9]*$/", $record[$key], $p)) {
	                        	$record[$key] = date($this->lng('conf_format_dateshort'), $record[$key]);
							} else {
	                        	$record[$key] = date($this->lng('conf_format_dateshort'), strtotime($record[$key]));
							}
						}
                        break;
					case 'DATE':
                        if ($record[$key] > 0) {
							// is value int?
							if (preg_match("/^[0-9]+[\.]?[0-9]*$/", $record[$key], $p)) {
	                        	$record[$key] = date($this->lng('conf_format_dateshort'), $record[$key]);
							} else {
	                        	$record[$key] = date($this->lng('conf_format_dateshort'), strtotime($record[$key]));
							}
						}
                        break;
                        
                    case 'DATETIME':
                        if ($record[$key] > 0) {
							// is value int?
							if (preg_match("/^[0-9]+[\.]?[0-9]*$/", $record[$key], $p)) {
	                        	$record[$key] = date($this->lng('conf_format_datetime'), $record[$key]);
							} else {
	                        	$record[$key] = date($this->lng('conf_format_datetime'), strtotime($record[$key]));
							}
						}
                        break;

                    case 'INTEGER':
                        $record[$key] = $app->functions->intval($record[$key]);
                        break;

                    case 'DOUBLE':
                        $record[$key] = htmlentities($record[$key],ENT_QUOTES,$conf["html_content_encoding"]);
                        break;

                    case 'CURRENCY':
                        $record[$key] = $app->functions->currency_format($record[$key]);
                        break;

                    default:
                        $record[$key] = htmlentities(stripslashes($record[$key]),ENT_QUOTES,$conf["html_content_encoding"]);
                	}
				}
            }
        }
        return $record;
    }

    public function encode($record)
    {
	global $app;
        if(is_array($record)) {
            foreach($this->listDef['item'] as $field){
                $key = $field['field'];
                switch($field['datatype']){

                    case 'VARCHAR':
                    case 'TEXT':
                        if(!is_array($record[$key])) {
                            $record[$key] = $app->db->quote($record[$key]);
                        } else {
                            $record[$key] = implode($this->tableDef[$key]['separator'],$record[$key]);
                        }
                        break;
                    
					case 'DATETSTAMP':
                        if($record[$key] > 0) {
						    $record[$key] = date('Y-m-d',strtotime($record[$key]));
                        }
                        break;
					
                    case 'DATE':
                        if($record[$key] != '' && $record[$key] != '0000-00-00') {
						    $record[$key] = $record[$key];
                        }
                        break;

                    case 'DATETIME':
                        if($record[$key] > 0) {
						    $record[$key] = date('Y-m-d H:i:s',strtotime($record[$key]));
                        }
                        break;

                    case 'INTEGER':
                        $record[$key] = $app->functions->intval($record[$key]);
                        break;

                    case 'DOUBLE':
                        $record[$key] = $app->db->quote($record[$key]);
                        break;

                    case 'CURRENCY':
                        $record[$key] = str_replace(',', '.', $record[$key]);
                        break;
                }
            }
        }
        return $record;
    }
	
	function lng($msg) {
		global $app;
			
		if(isset($this->wordbook[$msg])) {
			return $this->wordbook[$msg];
		} else {
			return $app->lng($msg);
		}	
	}
	
	function escapeArrayValues($search_values) {
	    global $conf;
		
		$out = array();
		if(is_array($search_values)) {
			foreach($search_values as $key => $val) {
				$out[$key] = htmlentities($val,ENT_QUOTES,$conf["html_content_encoding"]);
			}
		}
		
		return $out;
		
	}

}

?>