<?php

/*
+--------------------------------------------------------------------------
|   Invision Power Board v1.1
|   ========================================
|   by Matthew Mecham
|   (c) 2001,2002 Invision Power Services
|   http://www.ibforums.com
|   ========================================
|   Web: http://www.ibforums.com
|   Email: phpboards@ibforums.com
|   Licence Info: phpib-licence@ibforums.com
+---------------------------------------------------------------------------
|
|   > Topic Tracker module
|   > Module written by Matt Mecham
|   > Date started: 5th March 2002
|
|	> Module Version Number: 1.0.0
+--------------------------------------------------------------------------
*/


$idx = new tracker;

class tracker {

    var $output    = "";
    var $base_url  = "";
    var $html      = "";

    var $forum     = array();
    var $topic     = array();
    var $category  = array();
    var $type      = 'topic';

    
    function tracker($is_sub=0) {
    
    	//------------------------------------------------------
    	// $is_sub is a boolean operator.
    	// If set to 1, we don't show the "topic subscribed" page
    	// we simply end the subroutine and let the caller finish
    	// up for us.
    	//------------------------------------------------------
    
        global $ibforums, $DB, $std, $print, $skin_universal;
        
        $ibforums->lang    = $std->load_words($ibforums->lang, 'lang_emails', $ibforums->lang_id);

        
        
        //------------------------------------------------------
        // Check the input
        //------------------------------------------------------
        
        if ($ibforums->input['type'] == 'forum')
        {
        	$this->type = 'forum';
        }
        
        $ibforums->input['t'] = intval($ibforums->input['t']);
        $ibforums->input['f'] = intval($ibforums->input['f']);
        
        //------------------------------------------------------
        // Get the forum info based on the forum ID, get the category name, ID, and get the topic details
        //------------------------------------------------------
        
        if ($this->type == 'forum')
        {
        	$DB->query("SELECT f.id as fid, f.read_perms, f.password FROM ibf_forums f WHERE f.id='".$ibforums->input['f']."'");
        }
        else
        {
        	$DB->query("SELECT t.tid, f.id as fid, f.read_perms, f.password FROM ibf_topics t, ibf_forums f WHERE t.tid='".$ibforums->input['t']."' AND t.forum_id=f.id");
        }
        
        $this->topic = $DB->fetch_row();
        
       
        
        //------------------------------------------------------
        // Error out if we can not find the forum
        //------------------------------------------------------
        
        if (!$this->topic['fid'])
        {
        	if ($is_sub != 1)
        	{
            	$std->Error( array( LEVEL => 1, MSG => 'missing_files') );
            }
            else
            {
            	return;
            }
        }
        
        //------------------------------------------------------
        // Error out if we can not find the topic
        //------------------------------------------------------
        
        if ($this->type != 'forum')
        {
			if (!$this->topic['tid'])
			{
				if ($is_sub != 1)
				{
					$std->Error( array( LEVEL => 1, MSG => 'missing_files') );
				}
				else
				{
					return;
				}
			}
        }
        
        $this->base_url    = "{$ibforums->vars['board_url']}/index.{$ibforums->vars['php_ext']}?s={$ibforums->session_id}";
        
        $this->base_url_NS = "{$ibforums->vars['board_url']}/index.{$ibforums->vars['php_ext']}";
		
        //------------------------------------------------------
        // Check viewing permissions, private forums,
        // password forums, etc
        //------------------------------------------------------
        
        if (! $ibforums->member['id'] ) {
        	if ($is_sub != 1)
        	{
            	$std->Error( array( LEVEL => 1, MSG => 'no_guests') );
            }
            else
            {
            	return;
            }
        }
        
        if ($this->topic['read_perms'] != '*')
        {
        	if (! preg_match( "/(^|,)".$ibforums->member['mgroup']."(,|$)/", $this->topic['read_perms'] ) )
        	{
        		if ($is_sub != 1)
				{
					$std->Error( array( LEVEL => 1, MSG => 'forum_no_access') );
				}
				else
				{
					return;
				}
			}
		}
		
		if ($this->topic['password'] != "")
		{
		
			if ( ! $c_pass = $std->my_getcookie('iBForum'.$this->topic['fid']) )
			{
				$std->Error( array( LEVEL => 1, MSG => 'forum_no_access') );
			}
		
			if ( $c_pass != $this->topic['password'] )
			{
				$std->Error( array( LEVEL => 1, MSG => 'forum_no_access') );
			}
			
		}
		
		//------------------------------------------------------
		// Have we already subscribed?
		//------------------------------------------------------
		
		if ($this->type == 'forum')
		{
			$DB->query("SELECT frid from ibf_forum_tracker WHERE forum_id='".$this->topic['fid']."' AND member_id='".$ibforums->member['id']."'");
		}
		else
		{
			$DB->query("SELECT trid from ibf_tracker WHERE topic_id='".$this->topic['tid']."' AND member_id='".$ibforums->member['id']."'");
		}
		
		if ( $DB->get_num_rows() )
		{
			if ($is_sub != 1)
			{
				$std->Error( array( LEVEL => 1, MSG => 'already_sub') );
			}
			else
			{
				return;
			}
		}
		
		//------------------------------------------------------
		// Add it to the DB
		//------------------------------------------------------
		
		if ($this->type == 'forum')
		{
		
			$db_string = $DB->compile_db_insert_string( array (
																 'member_id'   => $ibforums->member['id'],
																 'forum_id'    => $this->topic['fid'],
																 'start_date'  => time(),
													  )       );
													  
			$DB->query("INSERT INTO ibf_forum_tracker (" .$db_string['FIELD_NAMES']. ") VALUES (". $db_string['FIELD_VALUES'] .")");
		
		}
		else
		{
			$db_string = $DB->compile_db_insert_string( array (
																 'member_id'   => $ibforums->member['id'],
																 'topic_id'    => $this->topic['tid'],
																 'start_date'  => time(),
													  )       );
													  
			$DB->query("INSERT INTO ibf_tracker (" .$db_string['FIELD_NAMES']. ") VALUES (". $db_string['FIELD_VALUES'] .")");

		}
		
		if ($is_sub != 1)
		{
			if ($this->type == 'forum')
			{
				$print->redirect_screen( $ibforums->lang['sub_added'], "act=SF&f={$this->topic['fid']}" );
			}
			else
			{
				$print->redirect_screen( $ibforums->lang['sub_added'], "act=ST&f={$this->topic['fid']}&t={$this->topic['tid']}&st={$ibforums->input['st']}" );
			}
		}
		else
		{
			return;
		}
	}
}

?>





