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844 lines
32 KiB
844 lines
32 KiB
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* Chat external API
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*
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* @package mod_chat
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* @category external
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* @copyright 2015 Juan Leyva <juan@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 3.0
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*/
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defined('MOODLE_INTERNAL') || die;
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require_once($CFG->libdir . '/externallib.php');
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require_once($CFG->dirroot . '/mod/chat/lib.php');
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use mod_chat\external\chat_message_exporter;
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/**
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* Chat external functions
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*
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* @package mod_chat
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* @category external
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* @copyright 2015 Juan Leyva <juan@moodle.com>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @since Moodle 3.0
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*/
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class mod_chat_external extends external_api {
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/**
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* Returns description of method parameters
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*
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* @return external_function_parameters
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* @since Moodle 3.0
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*/
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public static function login_user_parameters() {
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return new external_function_parameters(
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array(
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'chatid' => new external_value(PARAM_INT, 'chat instance id'),
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'groupid' => new external_value(PARAM_INT, 'group id, 0 means that the function will determine the user group',
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VALUE_DEFAULT, 0),
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)
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);
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}
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/**
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* Log the current user into a chat room in the given chat.
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*
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* @param int $chatid the chat instance id
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* @param int $groupid the user group id
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* @return array of warnings and the chat unique session id
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* @since Moodle 3.0
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* @throws moodle_exception
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*/
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public static function login_user($chatid, $groupid = 0) {
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global $DB;
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$params = self::validate_parameters(self::login_user_parameters(),
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array(
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'chatid' => $chatid,
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'groupid' => $groupid
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));
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$warnings = array();
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// Request and permission validation.
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$chat = $DB->get_record('chat', array('id' => $params['chatid']), '*', MUST_EXIST);
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list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
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$context = context_module::instance($cm->id);
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self::validate_context($context);
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require_capability('mod/chat:chat', $context);
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if (!empty($params['groupid'])) {
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$groupid = $params['groupid'];
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// Determine is the group is visible to user.
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if (!groups_group_visible($groupid, $course, $cm)) {
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throw new moodle_exception('notingroup');
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}
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} else {
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// Check to see if groups are being used here.
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if ($groupmode = groups_get_activity_groupmode($cm)) {
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$groupid = groups_get_activity_group($cm);
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// Determine is the group is visible to user (this is particullary for the group 0).
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if (!groups_group_visible($groupid, $course, $cm)) {
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throw new moodle_exception('notingroup');
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}
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} else {
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$groupid = 0;
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}
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}
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// Get the unique chat session id.
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// Since we are going to use the chat via Web Service requests we set the ajax version (since it's the most similar).
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if (!$chatsid = chat_login_user($chat->id, 'ajax', $groupid, $course)) {
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throw new moodle_exception('cantlogin', 'chat');
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}
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$result = array();
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$result['chatsid'] = $chatsid;
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$result['warnings'] = $warnings;
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return $result;
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}
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/**
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* Returns description of method result value
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*
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* @return external_description
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* @since Moodle 3.0
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*/
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public static function login_user_returns() {
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return new external_single_structure(
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array(
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'chatsid' => new external_value(PARAM_ALPHANUM, 'unique chat session id'),
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'warnings' => new external_warnings()
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)
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);
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}
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/**
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* Returns description of method parameters
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*
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* @return external_function_parameters
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* @since Moodle 3.0
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*/
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public static function get_chat_users_parameters() {
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return new external_function_parameters(
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array(
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'chatsid' => new external_value(PARAM_ALPHANUM, 'chat session id (obtained via mod_chat_login_user)')
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)
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);
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}
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/**
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* Get the list of users in the given chat session.
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*
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* @param int $chatsid the chat session id
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* @return array of warnings and the user lists
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* @since Moodle 3.0
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* @throws moodle_exception
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*/
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public static function get_chat_users($chatsid) {
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global $DB, $PAGE;
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$params = self::validate_parameters(self::get_chat_users_parameters(),
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array(
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'chatsid' => $chatsid
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));
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$warnings = array();
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// Request and permission validation.
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if (!$chatuser = $DB->get_record('chat_users', array('sid' => $params['chatsid']))) {
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throw new moodle_exception('notlogged', 'chat');
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}
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$chat = $DB->get_record('chat', array('id' => $chatuser->chatid), '*', MUST_EXIST);
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list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
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$context = context_module::instance($cm->id);
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self::validate_context($context);
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require_capability('mod/chat:chat', $context);
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// First, delete old users from the chats.
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chat_delete_old_users();
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$users = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid);
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$returnedusers = array();
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foreach ($users as $user) {
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$userpicture = new user_picture($user);
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$userpicture->size = 1; // Size f1.
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$profileimageurl = $userpicture->get_url($PAGE)->out(false);
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$returnedusers[] = array(
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'id' => $user->id,
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'fullname' => fullname($user),
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'profileimageurl' => $profileimageurl
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);
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}
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$result = array();
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$result['users'] = $returnedusers;
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$result['warnings'] = $warnings;
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return $result;
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}
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/**
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* Returns description of method result value
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*
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* @return external_description
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* @since Moodle 3.0
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*/
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public static function get_chat_users_returns() {
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return new external_single_structure(
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array(
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'users' => new external_multiple_structure(
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new external_single_structure(
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array(
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'id' => new external_value(PARAM_INT, 'user id'),
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'fullname' => new external_value(PARAM_NOTAGS, 'user full name'),
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'profileimageurl' => new external_value(PARAM_URL, 'user picture URL'),
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)
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),
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'list of users'
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),
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'warnings' => new external_warnings()
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)
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);
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}
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/**
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* Returns description of method parameters
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*
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* @return external_function_parameters
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* @since Moodle 3.0
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*/
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public static function send_chat_message_parameters() {
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return new external_function_parameters(
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array(
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'chatsid' => new external_value(PARAM_ALPHANUM, 'chat session id (obtained via mod_chat_login_user)'),
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'messagetext' => new external_value(PARAM_RAW, 'the message text'),
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'beepid' => new external_value(PARAM_RAW, 'the beep id', VALUE_DEFAULT, ''),
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)
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);
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}
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/**
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* Send a message on the given chat session.
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*
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* @param int $chatsid the chat session id
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* @param string $messagetext the message text
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* @param string $beepid the beep message id
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* @return array of warnings and the new message id (0 if the message was empty)
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* @since Moodle 3.0
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* @throws moodle_exception
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*/
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public static function send_chat_message($chatsid, $messagetext, $beepid = '') {
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global $DB;
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$params = self::validate_parameters(self::send_chat_message_parameters(),
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array(
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'chatsid' => $chatsid,
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'messagetext' => $messagetext,
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'beepid' => $beepid
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));
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$warnings = array();
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// Request and permission validation.
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if (!$chatuser = $DB->get_record('chat_users', array('sid' => $params['chatsid']))) {
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throw new moodle_exception('notlogged', 'chat');
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}
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$chat = $DB->get_record('chat', array('id' => $chatuser->chatid), '*', MUST_EXIST);
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list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
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$context = context_module::instance($cm->id);
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self::validate_context($context);
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require_capability('mod/chat:chat', $context);
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$chatmessage = clean_text($params['messagetext'], FORMAT_MOODLE);
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if (!empty($params['beepid'])) {
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$chatmessage = 'beep ' . $params['beepid'];
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}
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if (!empty($chatmessage)) {
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// Send the message.
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$messageid = chat_send_chatmessage($chatuser, $chatmessage, 0, $cm);
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// Update ping time.
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$chatuser->lastmessageping = time() - 2;
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$DB->update_record('chat_users', $chatuser);
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} else {
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$messageid = 0;
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}
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$result = array();
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$result['messageid'] = $messageid;
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$result['warnings'] = $warnings;
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return $result;
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}
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/**
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* Returns description of method result value
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*
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* @return external_description
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* @since Moodle 3.0
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*/
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public static function send_chat_message_returns() {
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return new external_single_structure(
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array(
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'messageid' => new external_value(PARAM_INT, 'message sent id'),
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'warnings' => new external_warnings()
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)
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);
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}
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/**
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* Returns description of method parameters
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*
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* @return external_function_parameters
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* @since Moodle 3.0
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*/
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public static function get_chat_latest_messages_parameters() {
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return new external_function_parameters(
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array(
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'chatsid' => new external_value(PARAM_ALPHANUM, 'chat session id (obtained via mod_chat_login_user)'),
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'chatlasttime' => new external_value(PARAM_INT, 'last time messages were retrieved (epoch time)', VALUE_DEFAULT, 0)
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)
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);
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}
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/**
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* Get the latest messages from the given chat session.
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*
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* @param int $chatsid the chat session id
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* @param int $chatlasttime last time messages were retrieved (epoch time)
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* @return array of warnings and the new message id (0 if the message was empty)
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* @since Moodle 3.0
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* @throws moodle_exception
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*/
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public static function get_chat_latest_messages($chatsid, $chatlasttime = 0) {
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global $DB, $CFG;
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$params = self::validate_parameters(self::get_chat_latest_messages_parameters(),
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array(
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'chatsid' => $chatsid,
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'chatlasttime' => $chatlasttime
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));
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$warnings = array();
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// Request and permission validation.
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if (!$chatuser = $DB->get_record('chat_users', array('sid' => $params['chatsid']))) {
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throw new moodle_exception('notlogged', 'chat');
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}
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$chat = $DB->get_record('chat', array('id' => $chatuser->chatid), '*', MUST_EXIST);
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list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
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$context = context_module::instance($cm->id);
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self::validate_context($context);
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require_capability('mod/chat:chat', $context);
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$chatlasttime = $params['chatlasttime'];
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if ((time() - $chatlasttime) > $CFG->chat_old_ping) {
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chat_delete_old_users();
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}
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// Set default chat last time (to not retrieve all the conversations).
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if ($chatlasttime == 0) {
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$chatlasttime = time() - $CFG->chat_old_ping;
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}
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if ($latestmessage = chat_get_latest_message($chatuser->chatid, $chatuser->groupid)) {
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$chatnewlasttime = $latestmessage->timestamp;
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} else {
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$chatnewlasttime = 0;
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}
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$messages = chat_get_latest_messages($chatuser, $chatlasttime);
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$returnedmessages = array();
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foreach ($messages as $message) {
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// FORMAT_MOODLE is mandatory in the chat plugin.
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list($messageformatted, $format) = external_format_text($message->message, FORMAT_MOODLE, $context->id, 'mod_chat',
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'', 0);
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$returnedmessages[] = array(
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'id' => $message->id,
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'userid' => $message->userid,
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'system' => (bool) $message->issystem,
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'message' => $messageformatted,
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'timestamp' => $message->timestamp,
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);
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}
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// Update our status since we are active in the chat.
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$DB->set_field('chat_users', 'lastping', time(), array('id' => $chatuser->id));
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$result = array();
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$result['messages'] = $returnedmessages;
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$result['chatnewlasttime'] = $chatnewlasttime;
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$result['warnings'] = $warnings;
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return $result;
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}
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/**
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* Returns description of method result value
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*
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* @return external_description
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* @since Moodle 3.0
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*/
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public static function get_chat_latest_messages_returns() {
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return new external_single_structure(
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array(
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'messages' => new external_multiple_structure(
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new external_single_structure(
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array(
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'id' => new external_value(PARAM_INT, 'message id'),
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'userid' => new external_value(PARAM_INT, 'user id'),
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'system' => new external_value(PARAM_BOOL, 'true if is a system message (like user joined)'),
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'message' => new external_value(PARAM_RAW, 'message text'),
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'timestamp' => new external_value(PARAM_INT, 'timestamp for the message'),
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)
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),
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'list of users'
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),
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'chatnewlasttime' => new external_value(PARAM_INT, 'new last time'),
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'warnings' => new external_warnings()
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)
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);
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}
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/**
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* Returns description of method parameters
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*
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* @return external_function_parameters
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* @since Moodle 3.0
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*/
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public static function view_chat_parameters() {
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return new external_function_parameters(
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array(
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'chatid' => new external_value(PARAM_INT, 'chat instance id')
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)
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);
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}
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/**
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* Trigger the course module viewed event and update the module completion status.
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*
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* @param int $chatid the chat instance id
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* @return array of warnings and status result
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* @since Moodle 3.0
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* @throws moodle_exception
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*/
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public static function view_chat($chatid) {
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global $DB, $CFG;
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$params = self::validate_parameters(self::view_chat_parameters(),
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array(
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'chatid' => $chatid
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));
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$warnings = array();
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// Request and permission validation.
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$chat = $DB->get_record('chat', array('id' => $params['chatid']), '*', MUST_EXIST);
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list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
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$context = context_module::instance($cm->id);
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self::validate_context($context);
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require_capability('mod/chat:chat', $context);
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// Call the url/lib API.
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chat_view($chat, $course, $cm, $context);
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$result = array();
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$result['status'] = true;
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$result['warnings'] = $warnings;
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return $result;
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}
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|
|
/**
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* Returns description of method result value
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*
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* @return external_description
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* @since Moodle 3.0
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*/
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public static function view_chat_returns() {
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return new external_single_structure(
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array(
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'status' => new external_value(PARAM_BOOL, 'status: true if success'),
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'warnings' => new external_warnings()
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)
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);
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}
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/**
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* Describes the parameters for get_chats_by_courses.
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*
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* @return external_function_parameters
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* @since Moodle 3.0
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*/
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public static function get_chats_by_courses_parameters() {
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return new external_function_parameters (
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array(
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'courseids' => new external_multiple_structure(
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new external_value(PARAM_INT, 'course id'), 'Array of course ids', VALUE_DEFAULT, array()
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),
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)
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);
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}
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/**
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* Returns a list of chats in a provided list of courses,
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* if no list is provided all chats that the user can view will be returned.
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*
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* @param array $courseids the course ids
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* @return array of chats details
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* @since Moodle 3.0
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*/
|
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public static function get_chats_by_courses($courseids = array()) {
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global $CFG;
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$returnedchats = array();
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$warnings = array();
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$params = self::validate_parameters(self::get_chats_by_courses_parameters(), array('courseids' => $courseids));
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$courses = array();
|
|
if (empty($params['courseids'])) {
|
|
$courses = enrol_get_my_courses();
|
|
$params['courseids'] = array_keys($courses);
|
|
}
|
|
|
|
// Ensure there are courseids to loop through.
|
|
if (!empty($params['courseids'])) {
|
|
|
|
list($courses, $warnings) = external_util::validate_courses($params['courseids'], $courses);
|
|
|
|
// Get the chats in this course, this function checks users visibility permissions.
|
|
// We can avoid then additional validate_context calls.
|
|
$chats = get_all_instances_in_courses("chat", $courses);
|
|
foreach ($chats as $chat) {
|
|
$chatcontext = context_module::instance($chat->coursemodule);
|
|
// Entry to return.
|
|
$chatdetails = array();
|
|
// First, we return information that any user can see in the web interface.
|
|
$chatdetails['id'] = $chat->id;
|
|
$chatdetails['coursemodule'] = $chat->coursemodule;
|
|
$chatdetails['course'] = $chat->course;
|
|
$chatdetails['name'] = external_format_string($chat->name, $chatcontext->id);
|
|
// Format intro.
|
|
list($chatdetails['intro'], $chatdetails['introformat']) =
|
|
external_format_text($chat->intro, $chat->introformat, $chatcontext->id, 'mod_chat', 'intro', null);
|
|
$chatdetails['introfiles'] = external_util::get_area_files($chatcontext->id, 'mod_chat', 'intro', false, false);
|
|
|
|
if (has_capability('mod/chat:chat', $chatcontext)) {
|
|
$chatdetails['chatmethod'] = $CFG->chat_method;
|
|
$chatdetails['keepdays'] = $chat->keepdays;
|
|
$chatdetails['studentlogs'] = $chat->studentlogs;
|
|
$chatdetails['chattime'] = $chat->chattime;
|
|
$chatdetails['schedule'] = $chat->schedule;
|
|
}
|
|
|
|
if (has_capability('moodle/course:manageactivities', $chatcontext)) {
|
|
$chatdetails['timemodified'] = $chat->timemodified;
|
|
$chatdetails['section'] = $chat->section;
|
|
$chatdetails['visible'] = $chat->visible;
|
|
$chatdetails['groupmode'] = $chat->groupmode;
|
|
$chatdetails['groupingid'] = $chat->groupingid;
|
|
}
|
|
$returnedchats[] = $chatdetails;
|
|
}
|
|
}
|
|
$result = array();
|
|
$result['chats'] = $returnedchats;
|
|
$result['warnings'] = $warnings;
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Describes the get_chats_by_courses return value.
|
|
*
|
|
* @return external_single_structure
|
|
* @since Moodle 3.0
|
|
*/
|
|
public static function get_chats_by_courses_returns() {
|
|
return new external_single_structure(
|
|
array(
|
|
'chats' => new external_multiple_structure(
|
|
new external_single_structure(
|
|
array(
|
|
'id' => new external_value(PARAM_INT, 'Chat id'),
|
|
'coursemodule' => new external_value(PARAM_INT, 'Course module id'),
|
|
'course' => new external_value(PARAM_INT, 'Course id'),
|
|
'name' => new external_value(PARAM_RAW, 'Chat name'),
|
|
'intro' => new external_value(PARAM_RAW, 'The Chat intro'),
|
|
'introformat' => new external_format_value('intro'),
|
|
'introfiles' => new external_files('Files in the introduction text', VALUE_OPTIONAL),
|
|
'chatmethod' => new external_value(PARAM_PLUGIN, 'chat method (sockets, ajax, header_js)',
|
|
VALUE_OPTIONAL),
|
|
'keepdays' => new external_value(PARAM_INT, 'keep days', VALUE_OPTIONAL),
|
|
'studentlogs' => new external_value(PARAM_INT, 'student logs visible to everyone', VALUE_OPTIONAL),
|
|
'chattime' => new external_value(PARAM_INT, 'chat time', VALUE_OPTIONAL),
|
|
'schedule' => new external_value(PARAM_INT, 'schedule type', VALUE_OPTIONAL),
|
|
'timemodified' => new external_value(PARAM_INT, 'time of last modification', VALUE_OPTIONAL),
|
|
'section' => new external_value(PARAM_INT, 'course section id', VALUE_OPTIONAL),
|
|
'visible' => new external_value(PARAM_BOOL, 'visible', VALUE_OPTIONAL),
|
|
'groupmode' => new external_value(PARAM_INT, 'group mode', VALUE_OPTIONAL),
|
|
'groupingid' => new external_value(PARAM_INT, 'group id', VALUE_OPTIONAL),
|
|
), 'Chats'
|
|
)
|
|
),
|
|
'warnings' => new external_warnings(),
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Returns description of method parameters
|
|
*
|
|
* @return external_function_parameters
|
|
* @since Moodle 3.4
|
|
*/
|
|
public static function get_sessions_parameters() {
|
|
return new external_function_parameters(
|
|
array(
|
|
'chatid' => new external_value(PARAM_INT, 'Chat instance id.'),
|
|
'groupid' => new external_value(PARAM_INT, 'Get messages from users in this group.
|
|
0 means that the function will determine the user group', VALUE_DEFAULT, 0),
|
|
'showall' => new external_value(PARAM_BOOL, 'Whether to show completed sessions or not.', VALUE_DEFAULT, false),
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Retrieves chat sessions for a given chat.
|
|
*
|
|
* @param int $chatid the chat instance id
|
|
* @param int $groupid filter messages by this group. 0 to determine the group.
|
|
* @param bool $showall whether to include incomplete sessions or not
|
|
* @return array of warnings and the sessions
|
|
* @since Moodle 3.4
|
|
* @throws moodle_exception
|
|
*/
|
|
public static function get_sessions($chatid, $groupid = 0, $showall = false) {
|
|
global $DB;
|
|
|
|
$params = self::validate_parameters(self::get_sessions_parameters(),
|
|
array(
|
|
'chatid' => $chatid,
|
|
'groupid' => $groupid,
|
|
'showall' => $showall,
|
|
));
|
|
$sessions = $warnings = array();
|
|
|
|
// Request and permission validation.
|
|
$chat = $DB->get_record('chat', array('id' => $params['chatid']), '*', MUST_EXIST);
|
|
list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
|
|
|
|
$context = context_module::instance($cm->id);
|
|
self::validate_context($context);
|
|
|
|
if (empty($chat->studentlogs) && !has_capability('mod/chat:readlog', $context)) {
|
|
throw new moodle_exception('nopermissiontoseethechatlog', 'chat');
|
|
}
|
|
|
|
if (!empty($params['groupid'])) {
|
|
$groupid = $params['groupid'];
|
|
// Determine is the group is visible to user.
|
|
if (!groups_group_visible($groupid, $course, $cm)) {
|
|
throw new moodle_exception('notingroup');
|
|
}
|
|
} else {
|
|
// Check to see if groups are being used here.
|
|
if ($groupmode = groups_get_activity_groupmode($cm)) {
|
|
$groupid = groups_get_activity_group($cm);
|
|
// Determine is the group is visible to user (this is particullary for the group 0).
|
|
if (!groups_group_visible($groupid, $course, $cm)) {
|
|
throw new moodle_exception('notingroup');
|
|
}
|
|
} else {
|
|
$groupid = 0;
|
|
}
|
|
}
|
|
|
|
$messages = chat_get_session_messages($chat->id, $groupid, 0, 0, 'timestamp DESC');
|
|
if ($messages) {
|
|
$chatsessions = chat_get_sessions($messages, $params['showall']);
|
|
// Format sessions for external.
|
|
foreach ($chatsessions as $session) {
|
|
$sessionusers = array();
|
|
foreach ($session->sessionusers as $sessionuser => $usermessagecount) {
|
|
$sessionusers[] = array(
|
|
'userid' => $sessionuser,
|
|
'messagecount' => $usermessagecount
|
|
);
|
|
}
|
|
$session->sessionusers = $sessionusers;
|
|
$sessions[] = $session;
|
|
}
|
|
}
|
|
|
|
$result = array();
|
|
$result['sessions'] = $sessions;
|
|
$result['warnings'] = $warnings;
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Returns description of method result value
|
|
*
|
|
* @return external_description
|
|
* @since Moodle 3.4
|
|
*/
|
|
public static function get_sessions_returns() {
|
|
return new external_single_structure(
|
|
array(
|
|
'sessions' => new external_multiple_structure(
|
|
new external_single_structure(
|
|
array(
|
|
'sessionstart' => new external_value(PARAM_INT, 'Session start time.'),
|
|
'sessionend' => new external_value(PARAM_INT, 'Session end time.'),
|
|
'sessionusers' => new external_multiple_structure(
|
|
new external_single_structure(
|
|
array(
|
|
'userid' => new external_value(PARAM_INT, 'User id.'),
|
|
'messagecount' => new external_value(PARAM_INT, 'Number of messages in the session.'),
|
|
)
|
|
), 'Session users.'
|
|
),
|
|
'iscomplete' => new external_value(PARAM_BOOL, 'Whether the session is completed or not.'),
|
|
)
|
|
),
|
|
'list of users'
|
|
),
|
|
'warnings' => new external_warnings()
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Returns description of method parameters
|
|
*
|
|
* @return external_function_parameters
|
|
* @since Moodle 3.4
|
|
*/
|
|
public static function get_session_messages_parameters() {
|
|
return new external_function_parameters(
|
|
array(
|
|
'chatid' => new external_value(PARAM_INT, 'Chat instance id.'),
|
|
'sessionstart' => new external_value(PARAM_INT, 'The session start time (timestamp).'),
|
|
'sessionend' => new external_value(PARAM_INT, 'The session end time (timestamp).'),
|
|
'groupid' => new external_value(PARAM_INT, 'Get messages from users in this group.
|
|
0 means that the function will determine the user group', VALUE_DEFAULT, 0),
|
|
)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Retrieves messages of the given chat session.
|
|
*
|
|
* @param int $chatid the chat instance id
|
|
* @param int $sessionstart the session start time (timestamp)
|
|
* @param int $sessionend the session end time (timestamp)
|
|
* @param int $groupid filter messages by this group. 0 to determine the group.
|
|
* @return array of warnings and the messages
|
|
* @since Moodle 3.4
|
|
* @throws moodle_exception
|
|
*/
|
|
public static function get_session_messages($chatid, $sessionstart, $sessionend, $groupid = 0) {
|
|
global $DB, $PAGE;
|
|
|
|
$params = self::validate_parameters(self::get_session_messages_parameters(),
|
|
array(
|
|
'chatid' => $chatid,
|
|
'sessionstart' => $sessionstart,
|
|
'sessionend' => $sessionend,
|
|
'groupid' => $groupid,
|
|
));
|
|
$messages = $warnings = array();
|
|
|
|
// Request and permission validation.
|
|
$chat = $DB->get_record('chat', array('id' => $params['chatid']), '*', MUST_EXIST);
|
|
list($course, $cm) = get_course_and_cm_from_instance($chat, 'chat');
|
|
|
|
$context = context_module::instance($cm->id);
|
|
self::validate_context($context);
|
|
|
|
if (empty($chat->studentlogs) && !has_capability('mod/chat:readlog', $context)) {
|
|
throw new moodle_exception('nopermissiontoseethechatlog', 'chat');
|
|
}
|
|
|
|
if (!empty($params['groupid'])) {
|
|
$groupid = $params['groupid'];
|
|
// Determine is the group is visible to user.
|
|
if (!groups_group_visible($groupid, $course, $cm)) {
|
|
throw new moodle_exception('notingroup');
|
|
}
|
|
} else {
|
|
// Check to see if groups are being used here.
|
|
if ($groupmode = groups_get_activity_groupmode($cm)) {
|
|
$groupid = groups_get_activity_group($cm);
|
|
// Determine is the group is visible to user (this is particullary for the group 0).
|
|
if (!groups_group_visible($groupid, $course, $cm)) {
|
|
throw new moodle_exception('notingroup');
|
|
}
|
|
} else {
|
|
$groupid = 0;
|
|
}
|
|
}
|
|
|
|
$messages = chat_get_session_messages($chat->id, $groupid, $params['sessionstart'], $params['sessionend'],
|
|
'timestamp ASC');
|
|
if ($messages) {
|
|
foreach ($messages as $message) {
|
|
$exporter = new chat_message_exporter($message, array('context' => $context));
|
|
$returneditems[] = $exporter->export($PAGE->get_renderer('core'));
|
|
}
|
|
}
|
|
|
|
$result = array(
|
|
'messages' => $messages,
|
|
'warnings' => $warnings,
|
|
);
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* Returns description of method result value
|
|
*
|
|
* @return external_description
|
|
* @since Moodle 3.4
|
|
*/
|
|
public static function get_session_messages_returns() {
|
|
return new external_single_structure(
|
|
array(
|
|
'messages' => new external_multiple_structure(
|
|
chat_message_exporter::get_read_structure()
|
|
),
|
|
'warnings' => new external_warnings()
|
|
)
|
|
);
|
|
}
|
|
}
|
|
|