deleteepisode.php

<?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/>.


/**
 * Page for deleting pcast episodes
 *
 * @package   mod_pcast
 * @copyright 2010 Stephen Bourget
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

require_once(dirname(__FILE__) . '/../../config.php');
require_once(dirname(__FILE__).'/lib.php');

$id       = required_param('id', PARAM_INT);          // course module ID
$confirm  = optional_param('confirm', 0, PARAM_INT);  // commit the operation?
$episode    = optional_param('episode', 0, PARAM_INT);    // episode id
$prevmode = required_param('prevmode', PARAM_ALPHA);
$hook     = optional_param('hook', '', PARAM_CLEAN);

$url = new moodle_url('/mod/pcast/deleteepisode.php', array('id'=>$id, 'prevmode'=>$prevmode));
if ($confirm !== 0) {
    $url->param('confirm', $confirm);
}
if ($episode !== 0) {
    $url->param('episode', $episode);
}
if ($hook !== '') {
    $url->param('hook', $hook);
}

$strpcast   = get_string("modulename", "pcast");
$strglossaries = get_string("modulenameplural", "pcast");
$stredit       = get_string("edit");
$episodedeleted  = get_string("episodedeleted", "pcast");

if ($id) {
    $cm         = get_coursemodule_from_id('pcast', $id, 0, false, MUST_EXIST);
    $course     = $DB->get_record('course', array('id' => $cm->course), '*', MUST_EXIST);
    $episode    = $DB->get_record('pcast_episodes', array('id' => $episode), '*', MUST_EXIST);
    $pcast      = $DB->get_record('pcast', array('id' => $cm->instance), '*', MUST_EXIST);

} else {
    print_error('invalidcmorid', 'pcast');
}

require_login($course->id, false, $cm);

$PAGE->set_url($url);
$context = get_context_instance(CONTEXT_MODULE, $cm->id);
$PAGE->set_context($context);

$manageentries = has_capability('mod/pcast:manage', $context);

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


$strareyousuredelete = get_string("areyousuredelete", "pcast");

if (($episode->userid != $USER->id) and !$manageentries) { // guest id is never matched, no need for special check here
    print_error('nopermissiontodelepisode');
}
$ineditperiod = ((time() - $episode->timecreated <  $CFG->maxeditingtime));
if (!$ineditperiod and !$manageentries) {
    print_error('errdeltimeexpired', 'pcast');
}

/// If data submitted, then process and store.

if ($confirm and confirm_sesskey()) { // the operation was confirmed.

    $fs = get_file_storage();
    $fs->delete_area_files($context->id, 'pcast_episode', $episode->id);
    $DB->delete_records("comments", array('itemid'=>$episode->id, 'commentarea'=>'pcast_episode', 'contextid'=>$context->id));
    $DB->delete_records("pcast_episodes", array("id"=>$episode->id));

    //delete pcast episode ratings
    require_once($CFG->dirroot.'/rating/lib.php');
    $delopt = new stdClass();
    $delopt->contextid = $context->id;
    $delopt->itemid = $episode->id;
    $delopt->component = 'mod_pcast';
    $delopt->ratingarea = 'episode';
    $rm = new rating_manager();
    $rm->delete_ratings($delopt);

    add_to_log($course->id, "pcast", "delete episode", "view.php?id=$cm->id&amp;mode=$prevmode&amp;hook=$hook", $episode->id, $cm->id);
    redirect("view.php?id=$cm->id&amp;mode=$prevmode&amp;hook=$hook");

} else {        // the operation has not been confirmed yet so ask the user to do so
    $PAGE->navbar->add(get_string('delete'));
    $PAGE->set_title(format_string($pcast->name));
    $PAGE->set_heading($course->fullname);
    echo $OUTPUT->header();
    //TODO: Replace withg CSS
    $areyousure = "<b>".format_string($episode->name)."</b><p>$strareyousuredelete</p>";
    $linkyes    = 'deleteepisode.php';
    $linkno     = 'view.php';
    $optionsyes = array('id'=>$cm->id,
                        'episode'=>$episode->id,
                        'confirm'=>1,
                        'sesskey'=>sesskey(),
                        'prevmode'=>$prevmode,
                        'hook'=>$hook);
    $optionsno  = array('id'=>$cm->id, 'mode'=>$prevmode, 'hook'=>$hook);

    echo $OUTPUT->confirm($areyousure, new moodle_url($linkyes, $optionsyes), new moodle_url($linkno, $optionsno));

    echo $OUTPUT->footer();
}