<?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/>.

/**

* @package mod

* @subpackage adobeconnect

* @author Akinsaya Delamarre (adelamarre@remote-learner.net)

* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

*/

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

require_once($CFG->dirroot . '/' . $CFG->admin . '/roles/lib.php');

require_once('locallib.php');

define("MAX_USERS_TO_LIST_PER_ROLE", 10);

$contextid = required_param('contextid',PARAM_INT);

$roleid = optional_param('roleid', 0, PARAM_INT);

list($context, $course, $cm) = get_context_info_array($contextid);

$url = new moodle_url('/mod/adobeconnect/participants.php', array('contextid' => $contextid));

if ($course) {

$isfrontpage = ($course->id == SITEID);

} else {

$isfrontpage = false;

if ($context->contextlevel == CONTEXT_USER) {

$course = $DB->get_record('course', array('id'=>optional_param('courseid', SITEID, PARAM_INT)), '*', MUST_EXIST);

$user = $DB->get_record('user', array('id'=>$context->instanceid), '*', MUST_EXIST);

$url->param('courseid', $course->id);

$url->param('userid', $user->id);

} else {

$course = $SITE;

}

}

// security

require_login($course, false, $cm);

require_capability('moodle/role:assign', $context);

$PAGE->set_url($url);

$PAGE->set_context($context);

$contextname = print_context_name($context);

$courseid = $course->id;

// These are needed early because of tabs.php

list($assignableroles, $assigncounts, $nameswithcounts) =

adobeconnect_get_assignable_roles($context, ROLENAME_BOTH, true);

$overridableroles = get_overridable_roles($context, ROLENAME_BOTH);

// Make sure this user can assign this role

if ($roleid && !isset($assignableroles[$roleid])) {

$a = new stdClass;

$a->roleid = $roleid;

$a->context = $contextname;

print_error('cannotassignrolehere', '', get_context_url($context), $a);

}

// Work out an appropriate page title.

if ($roleid) {

$a = new stdClass;

$a->role = $assignableroles[$roleid];

$a->context = $contextname;

$title = get_string('assignrolenameincontext', 'role', $a);

} else {

if ($isfrontpage) {

$title = get_string('frontpageroles', 'admin');

} else {

$title = get_string('assignrolesin', 'role', $contextname);

}

}

// Process any incoming role assignments before printing the header.

if ($roleid) {

// Create the user selector objects.

$options = array('context' => $context, 'roleid' => $roleid);

$potentialuserselector = roles_get_potential_user_selector($context, 'addselect', $options);

$currentuserselector = new existing_role_holders('removeselect', $options);

// Process incoming role assignments

$errors = array();

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

$userstoassign = $potentialuserselector->get_selected_users();

if (!empty($userstoassign)) {

foreach ($userstoassign as $adduser) {

$allow = true;

if ($allow) {

role_assign($roleid, $adduser->id, $context->id);

}

}

$potentialuserselector->invalidate_selected_users();

$currentuserselector->invalidate_selected_users();

$rolename = $assignableroles[$roleid];

add_to_log($course->id, 'role', 'assign', 'mod/adobeconnect/participant.php?contextid='.$context->id.'&roleid='.$roleid, $rolename, '', $USER->id);

// Counts have changed, so reload.

list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);

}

}

// Process incoming role unassignments

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

$userstounassign = $currentuserselector->get_selected_users();

if (!empty($userstounassign)) {

foreach ($userstounassign as $removeuser) {

//unassign only roles that are added manually, no messing with other components!!!

role_unassign($roleid, $removeuser->id, $context->id, '');

}

$potentialuserselector->invalidate_selected_users();

$currentuserselector->invalidate_selected_users();

$rolename = $assignableroles[$roleid];

add_to_log($course->id, 'role', 'unassign', 'mod/adobeconnect/participant.php?contextid='.$context->id.'&roleid='.$roleid, $rolename, '', $USER->id);

// Counts have changed, so reload.

list($assignableroles, $assigncounts, $nameswithcounts) = get_assignable_roles($context, ROLENAME_BOTH, true);

}

}

}

$PAGE->set_pagelayout('admin');

$PAGE->set_title($title);

switch ($context->contextlevel) {

case CONTEXT_SYSTEM:

admin_externalpage_setup('assignroles', '', array('contextid' => $contextid, 'roleid' => $roleid));

break;

case CONTEXT_USER:

$fullname = fullname($user, has_capability('moodle/site:viewfullnames', $context));

$PAGE->set_heading($fullname);

$showroles = 1;

break;

case CONTEXT_COURSECAT:

$PAGE->set_heading("$SITE->fullname: ".get_string("categories"));

break;

case CONTEXT_COURSE:

if ($isfrontpage) {

admin_externalpage_setup('frontpageroles', '', array('contextid' => $contextid, 'roleid' => $roleid));

} else {

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

}

break;

case CONTEXT_MODULE:

$PAGE->set_heading(print_context_name($context, false));

$PAGE->set_cacheable(false);

break;

case CONTEXT_BLOCK:

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

break;

}

echo $OUTPUT->header();

// Print heading.

echo $OUTPUT->heading_with_help($title, 'assignroles', 'role');

if ($roleid) {

// Show UI for assigning a particular role to users.

// Print a warning if we are assigning system roles.

if ($context->contextlevel == CONTEXT_SYSTEM) {

echo $OUTPUT->box(get_string('globalroleswarning', 'role'));

}

// Print the form.

$assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));

?>

<form id="assignform" method="post" action="<?php echo $assignurl ?>"><div>

<input type="hidden" name="sesskey" value="<?php echo sesskey() ?>" />

<table summary="" class="roleassigntable generaltable generalbox boxaligncenter" cellspacing="0">

<tr>

<td id="existingcell">

<p><label for="removeselect"><?php print_string('extusers', 'role'); ?></label></p>

<?php $currentuserselector->display() ?>

</td>

<td id="buttonscell">

<div id="addcontrols">

<input name="add" id="add" type="submit" value="<?php echo $OUTPUT->larrow().'&nbsp;'.get_string('add'); ?>" title="<?php print_string('add'); ?>" /><br />

</div>

<div id="removecontrols">

<input name="remove" id="remove" type="submit" value="<?php echo get_string('remove').'&nbsp;'.$OUTPUT->rarrow(); ?>" title="<?php print_string('remove'); ?>" />

</div>

</td>

<td id="potentialcell">

<p><label for="addselect"><?php print_string('potusers', 'role'); ?></label></p>

<?php $potentialuserselector->display() ?>

</td>

</tr>

</table>

</div></form>

<?php

$PAGE->requires->js_init_call('M.core_role.init_add_assign_page');

if (!empty($errors)) {

$msg = '<p>';

foreach ($errors as $e) {

$msg .= $e.'<br />';

}

$msg .= '</p>';

echo $OUTPUT->box_start();

echo $OUTPUT->notification($msg);

echo $OUTPUT->box_end();

}

// Print a form to swap roles, and a link back to the all roles list.

echo '<div class="backlink">';

$select = new single_select($PAGE->url, 'roleid', $nameswithcounts, $roleid, null);

$select->label = get_string('assignanotherrole', 'role');

echo $OUTPUT->render($select);

echo '<p><a href="' . $PAGE->url . '">' . get_string('backtoallroles', 'role') . '</a></p>';

echo '</div>';

} else if (empty($assignableroles)) {

// Print a message that there are no roles that can me assigned here.

echo $OUTPUT->heading(get_string('notabletoassignroleshere', 'role'), 3);

} else {

// Show UI for choosing a role to assign.

// Print a warning if we are assigning system roles.

if ($context->contextlevel == CONTEXT_SYSTEM) {

echo $OUTPUT->box(get_string('globalroleswarning', 'role'));

}

// Print instruction

echo $OUTPUT->heading(get_string('chooseroletoassign', 'role'), 3);

// Get the names of role holders for roles with between 1 and MAX_USERS_TO_LIST_PER_ROLE users,

// and so determine whether to show the extra column.

$roleholdernames = array();

$strmorethanmax = get_string('morethan', 'role', MAX_USERS_TO_LIST_PER_ROLE);

$showroleholders = false;

foreach ($assignableroles as $roleid => $notused) {

$roleusers = '';

if (0 < $assigncounts[$roleid] && $assigncounts[$roleid] <= MAX_USERS_TO_LIST_PER_ROLE) {

$roleusers = get_role_users($roleid, $context, false, 'u.id, u.lastname, u.firstname');

if (!empty($roleusers)) {

$strroleusers = array();

foreach ($roleusers as $user) {

$strroleusers[] = '<a href="' . $CFG->wwwroot . '/user/view.php?id=' . $user->id . '" >' . fullname($user) . '</a>';

}

$roleholdernames[$roleid] = implode('<br />', $strroleusers);

$showroleholders = true;

}

} else if ($assigncounts[$roleid] > MAX_USERS_TO_LIST_PER_ROLE) {

$assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));

$roleholdernames[$roleid] = '<a href="'.$assignurl.'">'.$strmorethanmax.'</a>';

} else {

$roleholdernames[$roleid] = '';

}

}

// Print overview table

$table = new html_table();

$table->tablealign = 'center';

$table->width = '60%';

$table->head = array(get_string('role'), get_string('description'), get_string('userswiththisrole', 'role'));

$table->wrap = array('nowrap', '', 'nowrap');

$table->align = array('left', 'left', 'center');

if ($showroleholders) {

$table->headspan = array(1, 1, 2);

$table->wrap[] = 'nowrap';

$table->align[] = 'left';

}

foreach ($assignableroles as $roleid => $rolename) {

$description = format_string($DB->get_field('role', 'description', array('id'=>$roleid)));

$assignurl = new moodle_url($PAGE->url, array('roleid'=>$roleid));

$row = array('<a href="'.$assignurl.'">'.$rolename.'</a>',

$description, $assigncounts[$roleid]);

if ($showroleholders) {

$row[] = $roleholdernames[$roleid];

}

$table->data[] = $row;

}

echo html_writer::table($table);

if ($context->contextlevel > CONTEXT_USER) {

echo html_writer::start_tag('div', array('class'=>'backlink'));

echo html_writer::tag('a', get_string('backto', '', $contextname), array('href'=>get_context_url($context)));

echo html_writer::end_tag('div');

}

}

echo $OUTPUT->footer();