moodle/message/classes/helper.php

309 lines
11 KiB
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/>.
/**
* Contains helper class for the message area.
*
* @package core_message
* @copyright 2016 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core_message;
defined('MOODLE_INTERNAL') || die();
/**
* Helper class for the message area.
*
* @copyright 2016 Mark Nelson <markn@moodle.com>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class helper {
/**
* Helper function to retrieve the messages between two users
*
* @param int $userid the current user
* @param int $otheruserid the other user
* @param int $timedeleted the time the message was deleted
* @param int $limitfrom
* @param int $limitnum
* @param string $sort
* @param int $timefrom the time from the message being sent
* @param int $timeto the time up until the message being sent
* @return array of messages
*/
public static function get_messages($userid, $otheruserid, $timedeleted = 0, $limitfrom = 0, $limitnum = 0,
$sort = 'timecreated ASC', $timefrom = 0, $timeto = 0) {
global $DB;
$messageid = $DB->sql_concat("'message_'", 'id');
$messagereadid = $DB->sql_concat("'messageread_'", 'id');
$sql = "SELECT {$messageid} AS fakeid, id, useridfrom, useridto, subject, fullmessage, fullmessagehtml, fullmessageformat,
smallmessage, notification, timecreated, 0 as timeread
FROM {message} m
WHERE ((useridto = ? AND useridfrom = ? AND timeusertodeleted = ?)
OR (useridto = ? AND useridfrom = ? AND timeuserfromdeleted = ?))
AND notification = 0
%where%
UNION ALL
SELECT {$messagereadid} AS fakeid, id, useridfrom, useridto, subject, fullmessage, fullmessagehtml, fullmessageformat,
smallmessage, notification, timecreated, timeread
FROM {message_read} mr
WHERE ((useridto = ? AND useridfrom = ? AND timeusertodeleted = ?)
OR (useridto = ? AND useridfrom = ? AND timeuserfromdeleted = ?))
AND notification = 0
%where%
ORDER BY $sort";
$params1 = array($userid, $otheruserid, $timedeleted,
$otheruserid, $userid, $timedeleted);
$params2 = array($userid, $otheruserid, $timedeleted,
$otheruserid, $userid, $timedeleted);
$where = array();
if (!empty($timefrom)) {
$where[] = 'AND timecreated >= ?';
$params1[] = $timefrom;
$params2[] = $timefrom;
}
if (!empty($timeto)) {
$where[] = 'AND timecreated <= ?';
$params1[] = $timeto;
$params2[] = $timeto;
}
$sql = str_replace('%where%', implode(' ', $where), $sql);
$params = array_merge($params1, $params2);
return $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
}
/**
* Helper function to return an array of messages.
*
* @param int $userid
* @param array $messages
* @return array
*/
public static function create_messages($userid, $messages) {
// Store the messages.
$arrmessages = array();
// We always view messages from oldest to newest, ensure we have it in that order.
$lastmessage = end($messages);
$firstmessage = reset($messages);
if ($lastmessage->timecreated < $firstmessage->timecreated) {
$messages = array_reverse($messages);
}
// Keeps track of the last day, month and year combo we were viewing.
$day = '';
$month = '';
$year = '';
foreach ($messages as $message) {
// Check if we are now viewing a different block period.
$displayblocktime = false;
$date = usergetdate($message->timecreated);
if ($day != $date['mday'] || $month != $date['month'] || $year != $date['year']) {
$day = $date['mday'];
$month = $date['month'];
$year = $date['year'];
$displayblocktime = true;
}
// Store the message to pass to the renderable.
$msg = new \stdClass();
$msg->id = $message->id;
$msg->text = message_format_message_text($message);
$msg->currentuserid = $userid;
$msg->useridfrom = $message->useridfrom;
$msg->useridto = $message->useridto;
$msg->displayblocktime = $displayblocktime;
$msg->timecreated = $message->timecreated;
$msg->timeread = $message->timeread;
$arrmessages[] = $msg;
}
return $arrmessages;
}
/**
* Helper function for creating a contact object.
*
* @param \stdClass $contact
* @param string $prefix
* @return \stdClass
*/
public static function create_contact($contact, $prefix = '') {
global $PAGE;
// Create the data we are going to pass to the renderable.
$userfields = \user_picture::unalias($contact, array('lastaccess'), $prefix . 'id', $prefix);
$data = new \stdClass();
$data->userid = $userfields->id;
$data->useridfrom = null;
$data->fullname = fullname($userfields);
// Get the user picture data.
$userpicture = new \user_picture($userfields);
$userpicture->size = 1; // Size f1.
$data->profileimageurl = $userpicture->get_url($PAGE)->out(false);
$userpicture->size = 0; // Size f2.
$data->profileimageurlsmall = $userpicture->get_url($PAGE)->out(false);
// Store the message if we have it.
$data->ismessaging = false;
$data->lastmessage = null;
$data->messageid = null;
if (isset($contact->smallmessage)) {
$data->ismessaging = true;
// Strip the HTML tags from the message for displaying in the contact area.
$data->lastmessage = clean_param($contact->smallmessage, PARAM_NOTAGS);
$data->useridfrom = $contact->useridfrom;
if (isset($contact->messageid)) {
$data->messageid = $contact->messageid;
}
}
$data->isonline = null;
if (self::show_online_status($userfields)) {
$data->isonline = self::is_online($userfields->lastaccess);
}
$data->isblocked = isset($contact->blocked) ? (bool) $contact->blocked : false;
$data->isread = isset($contact->isread) ? (bool) $contact->isread : false;
$data->unreadcount = isset($contact->unreadcount) ? $contact->unreadcount : null;
return $data;
}
/**
* Helper function for checking if we should show the user's online status.
*
* @param \stdClass $user
* @return boolean
*/
public static function show_online_status($user) {
global $CFG;
require_once($CFG->dirroot . '/user/lib.php');
if ($lastaccess = user_get_user_details($user, null, array('lastaccess'))) {
if (isset($lastaccess['lastaccess'])) {
return true;
}
}
return false;
}
/**
* Helper function for checking the time meets the 'online' condition.
*
* @param int $lastaccess
* @return boolean
*/
public static function is_online($lastaccess) {
global $CFG;
// Variable to check if we consider this user online or not.
$timetoshowusers = 300; // Seconds default.
if (isset($CFG->block_online_users_timetosee)) {
$timetoshowusers = $CFG->block_online_users_timetosee * 60;
}
$time = time() - $timetoshowusers;
return $lastaccess >= $time;
}
/**
* Get providers preferences.
*
* @param array $providers
* @param int $userid
* @return \stdClass
*/
public static function get_providers_preferences($providers, $userid) {
$preferences = new \stdClass();
// Get providers preferences.
foreach ($providers as $provider) {
foreach (array('loggedin', 'loggedoff') as $state) {
$linepref = get_user_preferences('message_provider_' . $provider->component . '_' . $provider->name
. '_' . $state, '', $userid);
if ($linepref == '') {
continue;
}
$lineprefarray = explode(',', $linepref);
$preferences->{$provider->component.'_'.$provider->name.'_'.$state} = array();
foreach ($lineprefarray as $pref) {
$preferences->{$provider->component.'_'.$provider->name.'_'.$state}[$pref] = 1;
}
}
}
return $preferences;
}
/**
* Requires the JS libraries for the toggle contact button.
*
* @return void
*/
public static function togglecontact_requirejs() {
global $PAGE;
static $done = false;
if ($done) {
return;
}
$PAGE->requires->js_call_amd('core_message/toggle_contact_button', 'enhance', array('#toggle-contact-button'));
$done = true;
}
/**
* Returns the attributes to place on a contact button.
*
* @param object $user User object.
* @param bool $iscontact
* @return array
*/
public static function togglecontact_link_params($user, $iscontact = false) {
$params = array(
'data-userid' => $user->id,
'data-is-contact' => $iscontact,
'id' => 'toggle-contact-button',
'role' => 'button',
'class' => 'ajax-contact-button',
);
return $params;
}
/**
* Returns the cache key for the time created value of the last message between two users.
*
* @param int $userid
* @param int $user2id
* @return string
*/
public static function get_last_message_time_created_cache_key($userid, $user2id) {
$ids = [$userid, $user2id];
sort($ids);
return implode('_', $ids);
}
}