<?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/>.


/**
 * Script to reset the attempts at a particular quiz, after confirmation.
 *
 * @package    local
 * @subpackage qeupgradehelper
 * @copyright  2010 The Open University
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */


require_once(dirname(__FILE__) . '/../../../config.php');
require_once(dirname(__FILE__) . '/locallib.php');
require_once($CFG->libdir . '/adminlib.php');

$quizid = required_param('quizid', PARAM_INT);
$confirmed = optional_param('confirmed', false, PARAM_BOOL);

require_login();
require_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM));

$quizsummary = report_quizupgrade_get_resettable_quiz($quizid);
if (!$quizsummary) {
    print_error('invalidquizid', 'report_quizupgrade', report_quizupgrade_url('index.php'));
}
$quizsummary->name = format_string($quizsummary->name);

admin_externalpage_setup('reportquizupgrade');

if ($confirmed && data_submitted() && confirm_sesskey()) {
    // Actually do the conversion.
    admin_externalpage_print_header();
    print_heading(get_string('resettingquizattempts', 'report_quizupgrade', $quizsummary));

    $upgrader = new report_quizupgrade_attempt_upgrader($quizsummary->id, $quizsummary->resettableattempts);
    $upgrader->reset_all_resettable_attempts();

    print_heading(get_string('resetcomplete', 'report_quizupgrade'));
    print_continue(report_quizupgrade_url('resetindex.php'));

    admin_externalpage_print_footer();
    exit;
}

// Print an are-you-sure page.
admin_externalpage_print_header();
print_heading(get_string('areyousure', 'report_quizupgrade'));

$message = get_string('areyousureresetmessage', 'report_quizupgrade', $quizsummary);
$params = array('quizid' => $quizsummary->id, 'confirmed' => 1, 'sesskey' => sesskey());
notice_yesno($message, report_quizupgrade_url('resetquiz.php'),
        report_quizupgrade_url('resetindex.php'), $params, null, 'post', 'get');

admin_externalpage_print_footer();