<?php
/* For licensing terms, see /license.txt */

/**
 * Script to draw the results from a query
 * @package chamilo.learnpath
 * @author Diego Escalante Urrelo <diegoe@gmail.com>
 * @author Marco Antonio Villegas Vega <marvil07@gmail.com>
 * @author Julio Montoya <gugli100@gmail.com> Lots of bug fixing
 *
 */
/**
 * Code
 */
require api_get_path(LIBRARY_PATH).'search/search_widget.php';
require api_get_path(LIBRARY_PATH).'search/ChamiloQuery.php';
require_once api_get_path(LIBRARY_PATH).'search/IndexableChunk.class.php';
require_once api_get_path(LIBRARY_PATH).'specific_fields_manager.lib.php';

Event::event_access_tool(TOOL_SEARCH);

if (isset($_SESSION['gradebook'])){
    $gradebook = $_SESSION['gradebook'];
}

if (!empty($gradebook) && $gradebook == 'view') {
    $interbreadcrumb[]= array (
            'url' => '../gradebook/'.$_SESSION['gradebook_dest'],
            'name' => get_lang('ToolGradebook')
        );
}

$interbreadcrumb[] = array('url' => './index.php', 'name' => get_lang(ucfirst(TOOL_SEARCH)));
search_widget_prepare($htmlHeadXtra);
Display::display_header(null, 'Path');

if (api_get_setting('search_enabled') !== 'true') {
    Display::display_error_message(get_lang('SearchFeatureNotEnabledComment'));
} else {
    if (!empty($_GET['action'])) {
        search_widget_show($_GET['action']);
    } else {
        search_widget_show();
    }
}

// Initialize.
$op = 'or';
if (!empty($_REQUEST['operator']) && in_array($op, array('or', 'and'))) {
    $op = $_REQUEST['operator'];
}

$query = stripslashes(htmlspecialchars_decode($_REQUEST['query'], ENT_QUOTES));

$mode = 'default';
if (in_array($_GET['mode'], array('gallery', 'default'))) {
    $mode = $_GET['mode'];
}

$term_array = array();
$specific_fields = get_specific_field_list();
foreach ($specific_fields as $specific_field) {
    if (!empty($_REQUEST[ 'sf_'. $specific_field['code'] ])) {
        $values = $_REQUEST[ 'sf_'. $specific_field['code'] ];
        if (in_array('__all__', $values)) {
            $sf_terms_for_code = xapian_get_all_terms(1000, $specific_field['code']);
            foreach ($sf_terms_for_code as $term) {
                if (!empty($term)) {
                    $term_array[] = chamilo_get_boolean_query($term['name']); // Here name includes prefix.
                }
            }
        } else {
            foreach ($values as $term) {
                if (!empty($term)) {
                    $prefix = $specific_field['code'];
                    $term_array[] = chamilo_get_boolean_query($prefix . $term);
                }
            }
        }
    } else {
        $sf_terms_for_code = xapian_get_all_terms(1000, $specific_field['code']);
        foreach ($sf_terms_for_code as $term) {
            if (!empty($term)) {
                $term_array[] = chamilo_get_boolean_query($term['name']); // Here name includes prefix.
            }
        }
    }
}

// Get right group of terms to show on multiple select.
$fixed_queries = array();
$course_filter = NULL;
if ( ($cid=api_get_course_id()) != -1 ) {
    // Results only from actual course.
    $course_filter = chamilo_get_boolean_query(XAPIAN_PREFIX_COURSEID . $cid);
}

if (count($term_array)) {
    $fixed_queries = chamilo_join_queries($term_array, null, $op);

    if ($course_filter != NULL) {
        $fixed_queries = chamilo_join_queries($fixed_queries, $course_filter, 'and');
    }
} else {
    if (!empty($query)) {
        $fixed_queries = array($course_filter);
    }
}

//var_dump($fixed_queries);

list($count, $results) = chamilo_query_query(api_convert_encoding($query, 'UTF-8', $charset), 0, 1000, $fixed_queries);

// Prepare blocks to show.
$blocks = array();

if ($count > 0) {
    foreach ($results as $result) {
        // Fill the result array.
        if (empty($result['thumbnail'])) {
            $result['thumbnail'] = Display::return_icon('no_document_thumb.jpg');
        }

        if (!empty($result['url'])) {
            $a_prefix = '<a href="'.$result['url'].'">';
            $a_sufix = '</a>';
        } else {
            $a_prefix = '';
            $a_sufix = '';
        }

        if ($mode == 'gallery') {
            $title = $a_prefix.str_replace('_',' ',$result['title']). $a_sufix;
            $blocks[] = array(
                $a_prefix .'<img src="'.$result['thumbnail'].'" />'. $a_sufix .'<br />'.$title.'<br />'.$result['author'],
            );
        } else {
            $title = '<div style="text-align:left;">'. $a_prefix . $result['title']. $a_sufix .(!empty($result['author']) ? ' '.$result['author'] : '').'<div>';
            $blocks[] = array($title);
        }
    }
}

// Show results.
if (count($blocks) > 0) {
    $s = new SortableTableFromArray($blocks);
    $s->display_mode = $mode; // default
    $s->display_mode_params = 3;
    $s->per_page = 9;
    $additional_parameters = array (
        'mode' => $mode,
        'action' => 'search',
        'query' => Security::remove_XSS($_REQUEST['query']),
    );
    $get_params = '';
    foreach ($specific_fields as $specific_field) {
        if (isset($_REQUEST[ 'sf_'. $specific_field['code'] ])) {
            $values = $_REQUEST[ 'sf_'. $specific_field['code'] ];
            //Sortable additional_parameters doesn't accept multi dimensional arrays
            //$additional_parameters[ 'sf_'. $specific_field['code'] ] = $values;
            foreach ( $values as $value ) {
                $get_params .= '&sf_' . $specific_field['code'] .'[]='. $value;
            }
            $get_params .= '&';
        }
    }
    $additional_parameters['operator'] = $op;

    $s->additional_parameters = $additional_parameters;

    if ($mode == 'default') {
        $s->set_header(0, get_lang(ucfirst(TOOL_SEARCH)), false);
    }

    $search_link = '<a href="%ssearch/index.php?mode=%s&action=search&query=%s%s">';

    $mode_selector = '<div id="mode-selector">';
    $mode_selector .= sprintf($search_link, api_get_path(WEB_CODE_PATH), 'gallery', $_REQUEST['query'], $get_params);
    $mode_selector .= Display::return_icon((($mode=='gallery')?'ButtonGallOn':'ButtonGallOff') .'.png').'</a>';
    $mode_selector .= sprintf($search_link, api_get_path(WEB_CODE_PATH), 'default', $_REQUEST['query'], $get_params);
    $mode_selector .= Display::return_icon((($mode=='default')?'ButtonListOn':'ButtonListOff') .'.png').'</a>';
    $mode_selector .= '</div>';
    echo '<div id="search-results-container">';
    echo $mode_selector;
    $s->display();
    echo '</div>';
}

Display::display_footer();