<?php
    /** 
    * Global Search Engine for Moodle
    *
    * @package search
    * @category core
    * @subpackage search_engine
    * @author Michael Champanis (mchampan) [cynnical@gmail.com], Valery Fremaux [valery.fremaux@club-internet.fr] > 1.8
    * @date 2008/03/31
    * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
    *
    * Prints some basic statistics about the current index.
    * Does some diagnostics if you are logged in as an administrator.
    * 
    */
    
    /**
    * includes and requires
    */
    require_once('../config.php');
    require_once("{$CFG->dirroot}/search/lib.php");
    
    /// checks global search is enabled

    if ($CFG->forcelogin) {
        require_login();
    }
    
    if (empty($CFG->enableglobalsearch)) {
        error(get_string('globalsearchdisabled', 'search'));
    }
    
/// check for php5, but don't die yet

    if ($check = search_check_php5()) {
        require_once("{$CFG->dirroot}/search/indexlib.php");
        
        $indexinfo = new IndexInfo();
    } 
    
    if (!$site = get_site()) {
        redirect("index.php");
    } 
    
    $strsearch = get_string('search', 'search');
    $strquery  = get_string('statistics', 'search'); 
    
    print_header("$site->shortname: $strsearch: $strquery", "$site->fullname",
               "<a href=\"index.php\">$strsearch</a> -> $strquery");
    
/// keep things pretty, even if php5 isn't available

    if (!$check) {
        print_heading(search_check_php5(true));
        print_footer();
        exit(0);
    }
    
    print_box_start();
    print_heading($strquery);
    
    print_box_start();
    
    $databasestr = get_string('database', 'search');
    $documentsinindexstr = get_string('documentsinindex', 'search');
    $deletionsinindexstr = get_string('deletionsinindex', 'search');
    $documentsindatabasestr = get_string('documentsindatabase', 'search');
    $databasestatestr = get_string('databasestate', 'search');
    
/// this table is only for admins, shows index directory size and location

    if (isadmin()) {
        $datadirectorystr = get_string('datadirectory', 'search');
        $inindexdirectorystr = get_string('filesinindexdirectory', 'search');
        $totalsizestr = get_string('totalsize', 'search');
        $errorsstr = get_string('errors', 'search');
        $solutionsstr = get_string('solutions', 'search');
        $checkdirstr = get_string('checkdir', 'search');
        $checkdbstr = get_string('checkdb', 'search');
        $checkdiradvicestr = get_string('checkdiradvice', 'search');
        $checkdbadvicestr = get_string('checkdbadvice', 'search');
        $runindexerteststr = get_string('runindexertest', 'search');
        $runindexerstr = get_string('runindexer', 'search');
        
        $admin_table->tablealign = "center";
        $admin_table->align = array ("right", "left");
        $admin_table->wrap = array ("nowrap", "nowrap");
        $admin_table->cellpadding = 5;
        $admin_table->cellspacing = 0;
        $admin_table->width = '500';
    
        $admin_table->data[] = array("<strong>{$datadirectorystr}</strong>", '<em><strong>'.$indexinfo->path.'</strong></em>');
        $admin_table->data[] = array($inindexdirectorystr, $indexinfo->filecount);
        $admin_table->data[] = array($totalsizestr, $indexinfo->size);
    
        if ($indexinfo->time > 0) {
            $admin_table->data[] = array(get_string('createdon', 'search'), date('r', $indexinfo->time));
        } 
        else {
            $admin_table->data[] = array(get_string('createdon', 'search'), '-');
        } 
    
        if (!$indexinfo->valid($errors)) {
            $admin_table->data[] = array("<strong>{$errorsstr}</strong>", '&nbsp;');
            foreach ($errors as $key => $value) {
                $admin_table->data[] = array($key.' ... ', $value);
            } 
        }
    
        print_table($admin_table);
        print_spacer(20);
        print_heading($solutionsstr);
        
        unset($admin_table->data);
        if (isset($errors['dir'])) {
            $admin_table->data[] = array($checkdirstr, $checkdiradvicestr);
        } 
        if (isset($errors['db'])) {
            $admin_table->data[] = array($checkdbstr, $checkdbadvicestr);
        } 
        
        $admin_table->data[] = array($runindexerteststr, '<a href="tests/index.php" target="_blank">tests/index.php</a>');
        $admin_table->data[] = array($runindexerstr, '<a href="indexersplash.php" target="_blank">indexersplash.php</a>');
        
        print_table($admin_table);
        print_spacer(20);
    } 
    
/// this is the standard summary table for normal users, shows document counts

    $table->tablealign = "center";
    $table->align = array ("right", "left");
    $table->wrap = array ("nowrap", "nowrap");
    $table->cellpadding = 5;
    $table->cellspacing = 0;
    $table->width = '500';
    
    $table->data[] = array("<strong>{$databasestr}</strong>", "<em><strong>{$CFG->prefix}".SEARCH_DATABASE_TABLE.'</strong></em>');
    
/// add extra fields if we're admin

    if (isadmin()) {
        //don't want to confuse users if the two totals don't match (hint: they should)
        $table->data[] = array($documentsinindexstr, $indexinfo->indexcount);
        
        //*cough* they should match if deletions were actually removed from the index,
        //as it turns out, they're only marked as deleted and not returned in search results
        $table->data[] = array($deletionsinindexstr, (int)$indexinfo->indexcount - (int)$indexinfo->dbcount);
    } 
    
    $table->data[] = array($documentsindatabasestr, $indexinfo->dbcount);
    
    foreach($indexinfo->types as $key => $value) {
        $table->data[] = array(get_string('documentsfor', 'search') . " '".get_string('modulenameplural', $key)."'", $value);
    } 
    
    print_heading($databasestatestr);
    print_table($table);
    
    print_box_end();
    print_box_end();
    print_footer();
?>