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<?php

global $CFG;

require_once("../../config.php");
require_once("lib.php");

$id = required_param('id', PARAM_INT); // Course Module ID
$sortorder = optional_param('sortorder', 'asc', PARAM_ALPHA); // Sorting order
$offset = optional_param('offset', 0, PARAM_INT); // number of entries to bypass
$displayformat = optional_param('displayformat',-1, PARAM_INT);

$mode = required_param('mode', PARAM_ALPHA); // mode to show the entries
$hook = optional_param('hook','ALL', PARAM_CLEAN); // what to show
$sortkey = optional_param('sortkey','UPDATE', PARAM_ALPHA); // Sorting key

$url = new moodle_url('/mod/glossary/print.php', array('id'=>$id));
if ($sortorder !== 'asc') {
    $url->param('sortorder', $sortorder);
}
if ($offset !== 0) {
    $url->param('offset', $offset);
}
if ($displayformat !== -1) {
    $url->param('displayformat', $displayformat);
}
if ($sortkey !== 'UPDATE') {
    $url->param('sortkey', $sortkey);
}
if ($mode !== 'letter') {
    $url->param('mode', $mode);
}
if ($hook !== 'ALL') {
    $url->param('hook', $hook);
}
$PAGE->set_url($url);

if (! $cm = get_coursemodule_from_id('glossary', $id)) {
    print_error('invalidcoursemodule');
}

if (! $course = $DB->get_record("course", array("id"=>$cm->course))) {
    print_error('coursemisconf');
}

if (! $glossary = $DB->get_record("glossary", array("id"=>$cm->instance))) {
    print_error('invalidid', 'glossary');
}

if ( !$entriesbypage = $glossary->entbypage ) {
    $entriesbypage = $CFG->glossary_entbypage;
}

require_course_login($course, true, $cm);
$context = get_context_instance(CONTEXT_MODULE, $cm->id);

// Prepare format_string/text options
$fmtoptions = array(
    'context' => $context);

$PAGE->set_pagelayout('print');
$PAGE->set_title(get_string("modulenameplural", "glossary"));
$PAGE->set_heading($course->fullname);
echo $OUTPUT->header();

/// Loading the textlib singleton instance. We are going to need it.
$textlib = textlib_get_instance();

if (!has_capability('mod/glossary:manageentries', $context) and !$glossary->allowprintview) {
    notice(get_string('printviewnotallowed', 'glossary'));
}

/// setting the default values for the display mode of the current glossary
/// only if the glossary is viewed by the first time
if ( $dp = $DB->get_record('glossary_formats', array('name'=>$glossary->displayformat)) ) {
    $printpivot = $dp->showgroup;
    if ( $mode == '' and $hook == '' and $show == '') {
        $mode = $dp->defaultmode;
        $hook = $dp->defaulthook;
        $sortkey = $dp->sortkey;
        $sortorder = $dp->sortorder;
    }
} else {
    $printpivot = 1;
    if ( $mode == '' and $hook == '' and $show == '') {
        $mode = 'letter';
        $hook = 'ALL';
    }
}

if ( $displayformat == -1 ) {
     $displayformat = $glossary->displayformat;
}

/// stablishing flag variables
if ( $sortorder = strtolower($sortorder) ) {
    if ($sortorder != 'asc' and $sortorder != 'desc') {
        $sortorder = '';
    }
}
if ( $sortkey = strtoupper($sortkey) ) {
    if ($sortkey != 'CREATION' and
        $sortkey != 'UPDATE' and
        $sortkey != 'FIRSTNAME' and
        $sortkey != 'LASTNAME'
        ) {
        $sortkey = '';
    }
}

switch ( $mode = strtolower($mode) ) {
case 'entry': /// Looking for a certain entry id
    $tab = GLOSSARY_STANDARD_VIEW;
break;

case 'cat': /// Looking for a certain cat
    $tab = GLOSSARY_CATEGORY_VIEW;
    if ( $hook > 0 ) {
        $category = $DB->get_record("glossary_categories", array("id"=>$hook));
    }
break;

case 'approval': /// Looking for entries waiting for approval
    $tab = GLOSSARY_APPROVAL_VIEW;
    if ( !$hook and !$sortkey and !$sortorder) {
        $hook = 'ALL';
    }
break;

case 'term': /// Looking for entries that include certain term in its concept, definition or aliases
    $tab = GLOSSARY_STANDARD_VIEW;
break;

case 'date':
    $tab = GLOSSARY_DATE_VIEW;
    if ( !$sortkey ) {
        $sortkey = 'UPDATE';
    }
    if ( !$sortorder ) {
        $sortorder = 'desc';
    }
break;

case 'author': /// Looking for entries, browsed by author
    $tab = GLOSSARY_AUTHOR_VIEW;
    if ( !$hook ) {
        $hook = 'ALL';
    }
    if ( !$sortkey ) {
        $sortkey = 'FIRSTNAME';
    }
    if ( !$sortorder ) {
        $sortorder = 'asc';
    }
break;

case 'letter': /// Looking for entries that begin with a certain letter, ALL or SPECIAL characters
default:
    $tab = GLOSSARY_STANDARD_VIEW;
    if ( !$hook ) {
        $hook = 'ALL';
    }
break;
}

include_once("sql.php");

$entriesshown = 0;
$currentpivot = '';
if ( $hook == 'SPECIAL' ) {
    $alphabet = explode(",", get_string("alphabet"));
}

$site = $DB->get_record("course", array("id"=>1));
echo '<p style="text-align:right"><span style="font-size:0.75em">' . userdate(time()) . '</span></p>';
echo get_string("site") . ': <strong>' . format_string($site->fullname) . '</strong><br />';
echo get_string("course") . ': <strong>' . format_string($course->fullname) . ' ('. format_string($course->shortname) . ')</strong><br />';
echo get_string("modulename","glossary") . ': <strong>' . format_string($glossary->name, true) . '</strong>';
if ( $allentries ) {
    foreach ($allentries as $entry) {

        // Setting the pivot for the current entry
        $pivot = $entry->glossarypivot;
        $upperpivot = $textlib->strtoupper($pivot);
        $pivottoshow = $textlib->strtoupper(format_string($pivot, true, $fmtoptions));
        // Reduce pivot to 1cc if necessary
        if ( !$fullpivot ) {
            $upperpivot = $textlib->substr($upperpivot, 0, 1);
            $pivottoshow = $textlib->substr($pivottoshow, 0, 1);
        }

        // If there's group break
        if ( $currentpivot != $upperpivot ) {

            // print the group break if apply
            if ( $printpivot ) {
                $currentpivot = $upperpivot;

                if ( isset($entry->userispivot) ) {
                    // printing the user icon if defined (only when browsing authors)
                    $user = $DB->get_record("user", array("id"=>$entry->userid));
                    $pivottoshow = fullname($user);
                }

                echo "<p class='mdl-align'><strong>".clean_text($pivottoshow)."</strong></p>" ;
            }
        }

        glossary_print_entry($course, $cm, $glossary, $entry, $mode, $hook, 1, $displayformat, true);
    }
}

echo $OUTPUT->footer();
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