on-demand release 2.3dev
[moodle.git] / message / externallib.php
CommitLineData
a623b6b8 1<?php
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2// This file is part of Moodle - http://moodle.org/
3//
4// Moodle is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// Moodle is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
16
4615817d 17
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18/**
19 * External message API
20 *
6fbd60ef 21 * @package core_message
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22 * @category external
23 * @copyright 2011 Jerome Mouneyrac
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24 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
25 */
4615817d 26
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27require_once("$CFG->libdir/externallib.php");
28
5d1017e1 29/**
4615817d 30 * Message external functions
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31 *
32 * @package core_message
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33 * @category external
34 * @copyright 2011 Jerome Mouneyrac
75e4f98c 35 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
4615817d 36 * @since Moodle 2.2
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37 */
38class core_message_external extends external_api {
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39
40 /**
41 * Returns description of method parameters
4615817d 42 *
a623b6b8 43 * @return external_function_parameters
4615817d 44 * @since Moodle 2.2
a623b6b8 45 */
5d1017e1 46 public static function send_instant_messages_parameters() {
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47 return new external_function_parameters(
48 array(
49 'messages' => new external_multiple_structure(
50 new external_single_structure(
51 array(
52 'touserid' => new external_value(PARAM_INT, 'id of the user to send the private message'),
53 'text' => new external_value(PARAM_RAW, 'the text of the message - not that you can send anything it will be automatically cleaned to PARAM_TEXT and used againt MOODLE_FORMAT'),
54 'clientmsgid' => new external_value(PARAM_ALPHANUMEXT, 'your own client id for the message. If this id is provided, the fail message id will be returned to you', VALUE_OPTIONAL),
55 )
56 )
57 )
58 )
59 );
60 }
61
62 /**
63 * Send private messages from the current USER to other users
64 *
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65 * @param array $messages An array of message to send.
66 * @return array
67 * @since Moodle 2.2
a623b6b8 68 */
5d1017e1 69 public static function send_instant_messages($messages = array()) {
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70 global $CFG, $USER, $DB;
71 require_once($CFG->dirroot . "/message/lib.php");
72
73 //check if messaging is enabled
74 if (!$CFG->messaging) {
75 throw new moodle_exception('disabled', 'message');
76 }
77
78 // Ensure the current user is allowed to run this function
79 $context = get_context_instance(CONTEXT_SYSTEM);
80 self::validate_context($context);
81 require_capability('moodle/site:sendmessage', $context);
82
5d1017e1 83 $params = self::validate_parameters(self::send_instant_messages_parameters(), array('messages' => $messages));
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84
85 //retrieve all tousers of the messages
4de00da7 86 $receivers = array();
a623b6b8 87 foreach($params['messages'] as $message) {
4de00da7 88 $receivers[] = $message['touserid'];
a623b6b8 89 }
4de00da7 90 list($sqluserids, $sqlparams) = $DB->get_in_or_equal($receivers, SQL_PARAMS_NAMED, 'userid_');
a623b6b8 91 $tousers = $DB->get_records_select("user", "id " . $sqluserids . " AND deleted = 0", $sqlparams);
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92 $blocklist = array();
93 $contactlist = array();
a623b6b8 94 $sqlparams['contactid'] = $USER->id;
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95 $rs = $DB->get_recordset_sql("SELECT *
96 FROM {message_contacts}
97 WHERE userid $sqluserids
98 AND contactid = :contactid", $sqlparams);
99 foreach ($rs as $record) {
100 if ($record->blocked) {
101 // $record->userid is blocking current user
102 $blocklist[$record->userid] = true;
103 } else {
104 // $record->userid have current user as contact
105 $contactlist[$record->userid] = true;
106 }
107 }
108 $rs->close();
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109
110 $canreadallmessages = has_capability('moodle/site:readallmessages', $context);
111
112 $resultmessages = array();
113 foreach ($params['messages'] as $message) {
114 $text = clean_param($message['text'], PARAM_TEXT);
115 $resultmsg = array(); //the infos about the success of the operation
116
117 //we are going to do some checking
118 //code should match /messages/index.php checks
119 $success = true;
120
121 //check the user exists
122 if (empty($tousers[$message['touserid']])) {
123 $success = false;
124 $errormessage = get_string('touserdoesntexist', 'message', $message['touserid']);
125 }
126
127 //check that the touser is not blocking the current user
4de00da7 128 if ($success and !empty($blocklist[$message['touserid']]) and !$canreadallmessages) {
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129 $success = false;
130 $errormessage = get_string('userisblockingyou', 'message');
131 }
132
78736e5d 133 // Check if the user is a contact
4615817d 134 //TODO MDL-31118 performance improvement - edit the function so we can pass an array instead userid
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135 $blocknoncontacts = get_user_preferences('message_blocknoncontacts', NULL, $message['touserid']);
136 // message_blocknoncontacts option is on and current user is not in contact list
137 if ($success && empty($contactlist[$message['touserid']]) && !empty($blocknoncontacts)) {
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138 // The user isn't a contact and they have selected to block non contacts so this message won't be sent.
139 $success = false;
140 $errormessage = get_string('userisblockingyounoncontact', 'message');
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141 }
142
143 //now we can send the message (at least try)
144 if ($success) {
4615817d 145 //TODO MDL-31118 performance improvement - edit the function so we can pass an array instead one touser object
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146 $success = message_post_message($USER, $tousers[$message['touserid']], $text, FORMAT_MOODLE);
147 }
148
149 //build the resultmsg
150 if (isset($message['clientmsgid'])) {
78736e5d 151 $resultmsg['clientmsgid'] = $message['clientmsgid'];
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152 }
153 if ($success) {
154 $resultmsg['msgid'] = $success;
155 } else {
156 $resultmsg['msgid'] = -1;
157 $resultmsg['errormessage'] = $errormessage;
158 }
159
160 $resultmessages[] = $resultmsg;
161 }
162
163 return $resultmessages;
164 }
165
166 /**
167 * Returns description of method result value
4615817d 168 *
a623b6b8 169 * @return external_description
4615817d 170 * @since Moodle 2.2
a623b6b8 171 */
5d1017e1 172 public static function send_instant_messages_returns() {
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173 return new external_multiple_structure(
174 new external_single_structure(
175 array(
78736e5d 176 'msgid' => new external_value(PARAM_INT, 'test this to know if it succeeds: id of the created message if it succeeded, -1 when failed'),
4de00da7 177 'clientmsgid' => new external_value(PARAM_ALPHANUMEXT, 'your own id for the message', VALUE_OPTIONAL),
78736e5d 178 'errormessage' => new external_value(PARAM_TEXT, 'error message - if it failed', VALUE_OPTIONAL)
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179 )
180 )
181 );
182 }
183
184}
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185
186/**
4615817d 187 * Deprecated message external functions
6fbd60ef 188 *
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189 * @package core_message
190 * @copyright 2011 Jerome Mouneyrac
191 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
192 * @since Moodle 2.1
193 * @deprecated Moodle 2.2 MDL-29106 - Please do not use this class any more.
194 * @todo MDL-31194 This will be deleted in Moodle 2.5.
195 * @see core_notes_external
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196 */
197class moodle_message_external extends external_api {
198
199 /**
200 * Returns description of method parameters
6fbd60ef 201 *
5d1017e1 202 * @return external_function_parameters
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203 * @since Moodle 2.1
204 * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
205 * @todo MDL-31194 This will be deleted in Moodle 2.5.
206 * @see core_message_external::send_instant_messages_parameters()
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207 */
208 public static function send_instantmessages_parameters() {
209 return core_message_external::send_instant_messages_parameters();
210 }
211
212 /**
213 * Send private messages from the current USER to other users
6fbd60ef 214 *
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215 * @param array $messages An array of message to send.
216 * @return array
217 * @since Moodle 2.1
218 * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
219 * @todo MDL-31194 This will be deleted in Moodle 2.5.
220 * @see core_message_external::send_instant_messages()
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221 */
222 public static function send_instantmessages($messages = array()) {
223 return core_message_external::send_instant_messages($messages);
224 }
225
226 /**
227 * Returns description of method result value
6fbd60ef 228 *
5d1017e1 229 * @return external_description
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230 * @since Moodle 2.1
231 * @deprecated Moodle 2.2 MDL-29106 - Please do not call this function any more.
232 * @todo MDL-31194 This will be deleted in Moodle 2.5.
233 * @see core_message_external::send_instant_messages_returns()
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234 */
235 public static function send_instantmessages_returns() {
236 return core_message_external::send_instant_messages_returns();
237 }
238
6fbd60ef 239}