<?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/>.

/**

* Copyright (C) 2007-2011 Catalyst IT (http://www.catalyst.net.nz)

* Copyright (C) 2011-2013 Totara LMS (http://www.totaralms.com)

* Copyright (C) 2014 onwards Catalyst IT (http://www.catalyst-eu.net)

*

* @package mod

* @subpackage facetoface

* @copyright 2014 onwards Catalyst IT <http://www.catalyst-eu.net>

* @author Stacey Walker <stacey@catalyst-eu.net>

* @author Alastair Munro <alastair.munro@totaralms.com>

* @author Aaron Barnes <aaron.barnes@totaralms.com>

* @author Francois Marier <francois@catalyst.net.nz>

*/

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

require_once('lib.php');

define('MAX_USERS_PER_PAGE', 5000);

$s = required_param('s', PARAM_INT); // Facetoface session ID.

$add = optional_param('add', 0, PARAM_BOOL);

$remove = optional_param('remove', 0, PARAM_BOOL);

$showall = optional_param('showall', 0, PARAM_BOOL);

$searchtext = optional_param('searchtext', '', PARAM_TEXT); // Search string.

$suppressemail = optional_param('suppressemail', false, PARAM_BOOL); // Send email notifications.

$previoussearch = optional_param('previoussearch', 0, PARAM_BOOL);

$backtoallsessions = optional_param('backtoallsessions', 0, PARAM_INT); // Facetoface activity to go back to.

if (!$session = facetoface_get_session($s)) {

print_error('error:incorrectcoursemodulesession', 'facetoface');

}

if (!$facetoface = $DB->get_record('facetoface', array('id' => $session->facetoface))) {

print_error('error:incorrectfacetofaceid', 'facetoface');

}

if (!$course = $DB->get_record('course', array('id' => $facetoface->course))) {

print_error('error:coursemisconfigured', 'facetoface');

}

if (!$cm = get_coursemodule_from_instance('facetoface', $facetoface->id, $course->id)) {

print_error('error:incorrectcoursemodule', 'facetoface');

}

// Check essential permissions.

require_course_login($course);

$context = context_course::instance($course->id);

require_capability('mod/facetoface:viewattendees', $context);

// Get some language strings.

$strsearch = get_string('search');

$strshowall = get_string('showall');

$strsearchresults = get_string('searchresults');

$strfacetofaces = get_string('modulenameplural', 'facetoface');

$strfacetoface = get_string('modulename', 'facetoface');

$errors = array();

// Get the user_selector we will need.

$potentialuserselector = new facetoface_candidate_selector('addselect', array('sessionid' => $session->id));

$existinguserselector = new facetoface_existing_selector('removeselect', array('sessionid' => $session->id));

// Process incoming user assignments.

if (optional_param('add', false, PARAM_BOOL) && confirm_sesskey()) {

require_capability('mod/facetoface:addattendees', $context);

$userstoassign = $potentialuserselector->get_selected_users();

if (!empty($userstoassign)) {

foreach ($userstoassign as $adduser) {

if (!$adduser = clean_param($adduser->id, PARAM_INT)) {

continue; // Invalid userid.

}

// Make sure that the user is enroled in the course.

if (!has_capability('moodle/course:view', $context, $adduser)) {

$user = $DB->get_record('user', array('id' => $adduser));

if (!enrol_try_internal_enrol($course->id, $user->id, 5)) {

$errors[] = get_string('error:enrolmentfailed', 'facetoface', fullname($user));

$errors[] = get_string('error:addattendee', 'facetoface', fullname($user));

continue; // Don't sign the user up.

}

}

$usernamefields = get_all_user_name_fields(true);

if (facetoface_get_user_submissions($facetoface->id, $adduser)) {

$erruser = $DB->get_record('user', array('id' => $adduser), "id, {$usernamefields}");

$errors[] = get_string('error:addalreadysignedupattendee', 'facetoface', fullname($erruser));

} else {

if (!facetoface_session_has_capacity($session, $context)) {

$errors[] = get_string('full', 'facetoface');

break; // No point in trying to add other people.

}

// Check if we are waitlisting or booking.

if ($session->datetimeknown) {

$status = MDL_F2F_STATUS_BOOKED;

} else {

$status = MDL_F2F_STATUS_WAITLISTED;

}

if (!facetoface_user_signup($session, $facetoface, $course, '', MDL_F2F_BOTH,

$status, $adduser, !$suppressemail)) {

$erruser = $DB->get_record('user', array('id' => $adduser), "id, {$usernamefields}");

$errors[] = get_string('error:addattendee', 'facetoface', fullname($erruser));

}

}

}

$potentialuserselector->invalidate_selected_users();

$existinguserselector->invalidate_selected_users();

}

}

// Process removing user assignments from session.

if (optional_param('remove', false, PARAM_BOOL) && confirm_sesskey()) {

require_capability('mod/facetoface:removeattendees', $context);

$userstoremove = $existinguserselector->get_selected_users();

if (!empty($userstoremove)) {

foreach ($userstoremove as $removeuser) {

if (!$removeuser = clean_param($removeuser->id, PARAM_INT)) {

continue; // Invalid userid.

}

if (facetoface_user_cancel($session, $removeuser, true, $cancelerr)) {

// Notify the user of the cancellation if the session hasn't started yet.

$timenow = time();

if (!$suppressemail and !facetoface_has_session_started($session, $timenow)) {

facetoface_send_cancellation_notice($facetoface, $session, $removeuser);

}

} else {

$errors[] = $cancelerr;

$usernamefields = get_all_user_name_fields(true);

$erruser = $DB->get_record('user', array('id' => $removeuser), "id, {$usernamefields}");

$errors[] = get_string('error:removeattendee', 'facetoface', fullname($erruser));

}

}

$potentialuserselector->invalidate_selected_users();

$existinguserselector->invalidate_selected_users();

// Update attendees.

facetoface_update_attendees($session);

}

}

// Main page.

$pagetitle = format_string($facetoface->name);

$PAGE->set_cm($cm);

$PAGE->set_url('/mod/facetoface/editattendees.php', array('s' => $s, 'backtoallsessions' => $backtoallsessions));

$PAGE->set_title($pagetitle);

$PAGE->set_heading($course->fullname);

echo $OUTPUT->header();

echo $OUTPUT->box_start();

echo $OUTPUT->heading(get_string('addremoveattendees', 'facetoface'));

// Create user_selector form.

$out = html_writer::start_tag('form', array('id' => 'assignform', 'method' => 'post', 'action' => $PAGE->url));

$out .= html_writer::start_tag('div');

$out .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => "previoussearch", 'value' => $previoussearch));

$out .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => "backtoallsessions", 'value' => $backtoallsessions));

$out .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => "sesskey", 'value' => sesskey()));

$table = new html_table();

$table->attributes['class'] = "generaltable generalbox boxaligncenter";

$cells = array();

$content = html_writer::start_tag('p') . html_writer::tag('label', get_string('attendees', 'facetoface'), array('for' => 'removeselect')) . html_writer::end_tag('p');

$content .= $existinguserselector->display(true);

$cell = new html_table_cell($content);

$cell->attributes['id'] = 'existingcell';

$cells[] = $cell;

$content = html_writer::tag('div', html_writer::empty_tag('input', array('type' => 'submit', 'id' => 'add', 'name' => 'add', 'title' => get_string('add'), 'value' => $OUTPUT->larrow().' '.get_string('add'))), array('id' => 'addcontrols'));

$content .= html_writer::tag('div', html_writer::empty_tag('input', array('type' => 'submit', 'id' => 'remove', 'name' => 'remove', 'title' => get_string('remove'), 'value' => $OUTPUT->rarrow().' '.get_string('remove'))), array('id' => 'removecontrols'));

$cell = new html_table_cell($content);

$cell->attributes['id'] = 'buttonscell';

$cells[] = $cell;

$content = html_writer::start_tag('p') . html_writer::tag('label', get_string('potentialattendees', 'facetoface'), array('for' => 'addselect')) . html_writer::end_tag('p');

$content .= $potentialuserselector->display(true);

$cell = new html_table_cell($content);

$cell->attributes['id'] = 'potentialcell';

$cells[] = $cell;

$table->data[] = new html_table_row($cells);

$content = html_writer::checkbox('suppressemail', 1, $suppressemail, get_string('suppressemail', 'facetoface'), array('id' => 'suppressemail'));

$content .= $OUTPUT->help_icon('suppressemail', 'facetoface');

$cell = new html_table_cell($content);

$cell->attributes['id'] = 'backcell';

$cell->attributes['colspan'] = '3';

$table->data[] = new html_table_row(array($cell));

$out .= html_writer::table($table);

// Get all signed up non-attendees.

$nonattendees = 0;

$usernamefields = get_all_user_name_fields(true, 'u');

$nonattendeesrs = $DB->get_recordset_sql(

"SELECT

u.id,

{$usernamefields},

u.email,

ss.statuscode

FROM

{facetoface_sessions} s

JOIN

{facetoface_signups} su

ON s.id = su.sessionid

JOIN

{facetoface_signups_status} ss

ON su.id = ss.signupid

JOIN

{user} u

ON u.id = su.userid

WHERE

s.id = ?

AND ss.superceded != 1

AND ss.statuscode = ?

ORDER BY

u.lastname, u.firstname", array($session->id, MDL_F2F_STATUS_REQUESTED)

);

$table = new html_table();

$table->head = array(get_string('name'), get_string('email'), get_string('status'));

foreach ($nonattendeesrs as $user) {

$data = array();

$data[] = new html_table_cell(fullname($user));

$data[] = new html_table_cell($user->email);

$data[] = new html_table_cell(get_string('status_' . facetoface_get_status($user->statuscode), 'facetoface'));

$row = new html_table_row($data);

$table->data[] = $row;

$nonattendees++;

}

$nonattendeesrs->close();

if ($nonattendees) {

$out .= html_writer::empty_tag('br');

$out .= $OUTPUT->heading(get_string('unapprovedrequests', 'facetoface') . ' (' . $nonattendees . ')');

$out .= html_writer::table($table);

}

$out .= html_writer::end_tag('div') . html_writer::end_tag('form');

echo $out;

if (!empty($errors)) {

$msg = html_writer::start_tag('p');

foreach ($errors as $e) {

$msg .= $e . html_writer::empty_tag('br');

}

$msg .= html_writer::end_tag('p');

echo $OUTPUT->box_start('center');

echo $OUTPUT->notification($msg);

echo $OUTPUT->box_end();

}

// Bottom of the page links.

echo html_writer::start_tag('p');

$url = new moodle_url('/mod/facetoface/attendees.php', array('s' => $session->id, 'backtoallsessions' => $backtoallsessions));

echo html_writer::link($url, get_string('goback', 'facetoface'));

echo html_writer::end_tag('p');

echo $OUTPUT->box_end();

echo $OUTPUT->footer($course);