<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * The gradebook grader report
 *
 * @package   gradereport_grader
 * @copyright 2007 Moodle Pty Ltd (http://moodle.com)
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once('../../../config.php');
require_once($CFG->libdir.'/gradelib.php');
require_once($CFG->dirroot.'/user/renderer.php');
require_once($CFG->dirroot.'/grade/lib.php');
require_once($CFG->dirroot.'/grade/report/grader/lib.php');

$courseid      = required_param('id', PARAM_INT);        // course id
$page          = optional_param('page', 0, PARAM_INT);   // active page
$edit          = optional_param('edit', -1, PARAM_BOOL); // sticky editting mode

$sortitemid    = optional_param('sortitemid', 0, PARAM_ALPHANUMEXT);

> $sort          = optional_param('sort', '', PARAM_ALPHA);


$action        = optional_param('action', 0, PARAM_ALPHAEXT);
$move          = optional_param('move', 0, PARAM_INT);
$type          = optional_param('type', 0, PARAM_ALPHA);
$target        = optional_param('target', 0, PARAM_ALPHANUM);
$toggle        = optional_param('toggle', null, PARAM_INT);
$toggle_type   = optional_param('toggle_type', 0, PARAM_ALPHANUM);

$graderreportsifirst  = optional_param('sifirst', null, PARAM_NOTAGS);
$graderreportsilast   = optional_param('silast', null, PARAM_NOTAGS);


> $studentsperpage = optional_param('perpage', null, PARAM_INT);
$PAGE->set_url(new moodle_url('/grade/report/grader/index.php', array('id'=>$courseid)));
> 


$PAGE->set_pagelayout('report');
$PAGE->requires->js_call_amd('gradereport_grader/stickycolspan', 'init');

> $PAGE->requires->js_call_amd('gradereport_grader/search', 'init');

> $PAGE->requires->js_call_amd('gradereport_grader/feedback_modal', 'init');


// basic access checks
if (!$course = $DB->get_record('course', array('id' => $courseid))) {
    throw new \moodle_exception('invalidcourseid');
}
require_login($course);
$context = context_course::instance($course->id);

// The report object is recreated each time, save search information to SESSION object for future use.
if (isset($graderreportsifirst)) {
    $SESSION->gradereport["filterfirstname-{$context->id}"] = $graderreportsifirst;
}
if (isset($graderreportsilast)) {
    $SESSION->gradereport["filtersurname-{$context->id}"] = $graderreportsilast;
}


> if (isset($studentsperpage) && $studentsperpage >= 0) {
require_capability('gradereport/grader:view', $context);
>     set_user_preference('grade_report_studentsperpage', $studentsperpage);
require_capability('moodle/grade:viewall', $context);
> }

> 


// return tracking object
$gpr = new grade_plugin_return(
    array(
        'type' => 'report',
        'plugin' => 'grader',
        'course' => $course,
        'page' => $page
    )
);

// last selected report session tracking
if (!isset($USER->grade_last_report)) {
    $USER->grade_last_report = array();
}
$USER->grade_last_report[$course->id] = 'grader';

// Build editing on/off buttons.
$buttons = '';

$PAGE->set_other_editing_capability('moodle/grade:edit');
if ($PAGE->user_allowed_editing() && !$PAGE->theme->haseditswitch) {
    if ($edit != - 1) {
        $USER->editing = $edit;
    }

    // Page params for the turn editing on button.
    $options = $gpr->get_options();
    $buttons = $OUTPUT->edit_button(new moodle_url($PAGE->url, $options), 'get');
}

$gradeserror = array();

// Handle toggle change request
if (!is_null($toggle) && !empty($toggle_type)) {
    set_user_preferences(array('grade_report_show'.$toggle_type => $toggle));
}

// Perform actions
if (!empty($target) && !empty($action) && confirm_sesskey()) {
    grade_report_grader::do_process_action($target, $action, $courseid);
}

// Do this check just before printing the grade header (and only do it once).
grade_regrade_final_grades_if_required($course);


< // Print header
< print_grade_page_head($COURSE->id, 'report', 'grader', false, false, $buttons);
< 


//Initialise the grader report object that produces the table
//the class grade_report_grader_ajax was removed as part of MDL-21562

< $report = new grade_report_grader($courseid, $gpr, $context, $page, $sortitemid);



> if ($sort && strcasecmp($sort, 'desc') !== 0) {
>     $sort = 'asc';
> }
> // We have lots of hardcoded 'ASC' and 'DESC' strings in grade/report/grader.lib :(. So we need to uppercase the sort.
> $sort = strtoupper($sort);
> 
> $report = new grade_report_grader($courseid, $gpr, $context, $page, $sortitemid, $sort);
> 
> // We call this a little later since we need some info from the grader report.
> $PAGE->requires->js_call_amd('gradereport_grader/collapse', 'init', [
>     'userID' => $USER->id,
>     'courseID' => $courseid,
>     'defaultSort' => $report->get_default_sortable()
> ]);
> 


$numusers = $report->get_numusers(true, true);


> $actionbar = new \gradereport_grader\output\action_bar($context, $report, $numusers);
// make sure separate group does not prevent view
> print_grade_page_head($COURSE->id, 'report', 'grader', false, false, $buttons, true,
if ($report->currentgroup == -2) {
>     null, null, null, $actionbar, false);
    echo $OUTPUT->heading(get_string("notingroup"));
> 


    echo $OUTPUT->footer();
    exit;
}

$warnings = [];
$isediting = has_capability('moodle/grade:edit', $context) && isset($USER->editing) && $USER->editing;
if ($isediting && ($data = data_submitted()) && confirm_sesskey()) {

<     // Processing posted grades & feedback here.



>     // Processing posted grades here.


    $warnings = $report->process_data($data);
}

// Final grades MUST be loaded after the processing.
$report->load_users();
$report->load_final_grades();

< echo $report->group_selector;
< 
< // User search
< $url = new moodle_url('/grade/report/grader/index.php', array('id' => $course->id));
< $firstinitial = $SESSION->gradereport["filterfirstname-{$context->id}"] ?? '';
< $lastinitial  = $SESSION->gradereport["filtersurname-{$context->id}"] ?? '';
< $totalusers = $report->get_numusers(true, false);
< $renderer = $PAGE->get_renderer('core_user');
< echo $renderer->user_search($url, $firstinitial, $lastinitial, $numusers, $totalusers, $report->currentgroupname);



//show warnings if any
foreach ($warnings as $warning) {
    echo $OUTPUT->notification($warning);
}


< $studentsperpage = $report->get_students_per_page();
< // Don't use paging if studentsperpage is empty or 0 at course AND site levels
< if (!empty($studentsperpage)) {
<     echo $OUTPUT->paging_bar($numusers, $report->page, $studentsperpage, $report->pbarurl);
< }
< 


$displayaverages = true;
if ($numusers == 0) {
    $displayaverages = false;
}

$reporthtml = $report->get_grade_table($displayaverages);


> $studentsperpage = $report->get_students_per_page();
// print submit button
> 
if (!empty($USER->editing) && ($report->get_pref('showquickfeedback') || $report->get_pref('quickgrading'))) {
> // Print per-page dropdown.
    echo '<form action="index.php" enctype="application/x-www-form-urlencoded" method="post" id="gradereport_grader">'; // Enforce compatibility with our max_input_vars hack.
> $pagingoptions = grade_report_grader::PAGINATION_OPTIONS;
    echo '<div>';
> if ($studentsperpage) {
    echo '<input type="hidden" value="'.s($courseid).'" name="id" />';
>     $pagingoptions[] = $studentsperpage; // To make sure the current preference is within the options.
    echo '<input type="hidden" value="'.sesskey().'" name="sesskey" />';
> }
    echo '<input type="hidden" value="'.time().'" name="timepageload" />';
> $pagingoptions = array_unique($pagingoptions);
    echo '<input type="hidden" value="grader" name="report"/>';
> sort($pagingoptions);
    echo '<input type="hidden" value="'.$page.'" name="page"/>';
> $pagingoptions = array_combine($pagingoptions, $pagingoptions);
    echo $gpr->get_form_fields();
> if ($numusers > grade_report_grader::MAX_STUDENTS_PER_PAGE) {
    echo $reporthtml;
>     $pagingoptions['0'] = grade_report_grader::MAX_STUDENTS_PER_PAGE;
    echo '<div class="submit"><input type="submit" id="gradersubmit" class="btn btn-primary"
> } else {
        value="'.s(get_string('savechanges')).'" /></div>';
>     $pagingoptions['0'] = get_string('all');
    echo '</div></form>';
> }
} else {
> 
    echo $reporthtml;
> $perpagedata = [
}
>     'baseurl' => new moodle_url('/grade/report/grader/index.php', ['id' => s($courseid), 'report' => 'grader']),

>     'options' => []
// prints paging bar at bottom for large pages
> ];
if (!empty($studentsperpage) && $studentsperpage >= 20) {
> foreach ($pagingoptions as $key => $name) {
    echo $OUTPUT->paging_bar($numusers, $report->page, $studentsperpage, $report->pbarurl);
>     $perpagedata['options'][] = [
}
>         'name' => $name,

>         'value' => $key,
$event = \gradereport_grader\event\grade_report_viewed::create(
>         'selected' => $key == $studentsperpage,
    array(
>     ];
        'context' => $context,
> }
        'courseid' => $courseid,
> 
    )
> $footercontent = html_writer::div(
);
>     $OUTPUT->render_from_template('gradereport_grader/perpage', $perpagedata)
$event->trigger();
>     , 'col-auto'

> );
echo $OUTPUT->footer();
> 
> // The number of students per page is always limited even if it is claimed to be unlimited.
> $studentsperpage = $studentsperpage ?: grade_report_grader::MAX_STUDENTS_PER_PAGE;
> $footercontent .= html_writer::div(
>     $OUTPUT->paging_bar($numusers, $report->page, $studentsperpage, $report->pbarurl),
>     'col'
> );
> 



< if (!empty($USER->editing) && ($report->get_pref('showquickfeedback') || $report->get_pref('quickgrading'))) {



> if (!empty($USER->editing) && $report->get_pref('quickgrading')) {



<     echo '<div class="submit"><input type="submit" id="gradersubmit" class="btn btn-primary"
<         value="'.s(get_string('savechanges')).'" /></div>';



> 
>     $footercontent .= html_writer::div(
>         '<input type="submit" id="gradersubmit" class="btn btn-primary" value="'.s(get_string('savechanges')).'" />',
>         'col-auto'
>     );
> 
>     $stickyfooter = new core\output\sticky_footer($footercontent);
>     echo $OUTPUT->render($stickyfooter);
> 



< }



< // prints paging bar at bottom for large pages
< if (!empty($studentsperpage) && $studentsperpage >= 20) {
<     echo $OUTPUT->paging_bar($numusers, $report->page, $studentsperpage, $report->pbarurl);



>     $stickyfooter = new core\output\sticky_footer($footercontent);
>     echo $OUTPUT->render($stickyfooter);