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<?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/>.
/**
* This file contains all necessary code to view a diff page
*
* @package mod_wiki
* @copyright 2009 Marc Alier, Jordi Piguillem marc.alier@upc.edu
* @copyright 2009 Universitat Politecnica de Catalunya http://www.upc.edu
*
* @author Jordi Piguillem
* @author Marc Alier
* @author David Jimenez
* @author Josep Arus
* @author Kenneth Riba
*
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once('../../config.php');
require_once($CFG->dirroot . '/mod/wiki/lib.php');
require_once($CFG->dirroot . '/mod/wiki/locallib.php');
require_once($CFG->dirroot . '/mod/wiki/pagelib.php');
require_once($CFG->dirroot . '/mod/wiki/diff/difflib.php');
require_once($CFG->dirroot . '/mod/wiki/diff/diff_nwiki.php');
$pageid = required_param('pageid', PARAM_TEXT);
$compare = required_param('compare', PARAM_INT);
$comparewith = required_param('comparewith', PARAM_INT);
if (!$page = wiki_get_page($pageid)) {
print_error('incorrectpageid', 'wiki');
}
if (!$subwiki = wiki_get_subwiki($page->subwikiid)) {
print_error('incorrectsubwikiid', 'wiki');
}
if (!$wiki = wiki_get_wiki($subwiki->wikiid)) {
print_error('incorrectwikiid', 'wiki');
}
if (!$cm = get_coursemodule_from_instance('wiki', $wiki->id)) {
print_error('invalidcoursemodule');
}
$course = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
if ($compare >= $comparewith) {
print_error('cannotcomparenewerversion', 'wiki');
}
require_course_login($course, true, $cm);
if (!wiki_user_can_view($subwiki, $wiki)) {
print_error('cannotviewpage', 'wiki');
}
$wikipage = new page_wiki_diff($wiki, $subwiki, $cm);
$wikipage->set_page($page);
$wikipage->set_comparison($compare, $comparewith);
$event = \mod_wiki\event\page_diff_viewed::create(
array(
'context' => context_module::instance($cm->id),
'objectid' => $pageid,
'other' => array(
'comparewith' => $comparewith,
'compare' => $compare
)
));
$event->add_record_snapshot('wiki_pages', $page);
$event->add_record_snapshot('wiki', $wiki);
$event->add_record_snapshot('wiki_subwikis', $subwiki);
$event->trigger();
$wikipage->print_header();
$wikipage->print_content();
$wikipage->print_footer();