aboutsummaryrefslogtreecommitdiff
path: root/mod/messages/start.php
blob: 631a5f731bd87e35445e46b10e7a1cb568c9f9ca (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
<?php
/**
* Elgg internal messages plugin
* This plugin lets users send messages to each other.
*
* @package ElggMessages
*/


elgg_register_event_handler('init', 'system', 'messages_init');

function messages_init() {

	// register a library of helper functions
	elgg_register_library('elgg:messages', elgg_get_plugins_path() . 'messages/lib/messages.php');

	// add page menu items
	if (elgg_is_logged_in()) {
		elgg_register_menu_item('page', array(
			'name' => 'messages:inbox',
			'text' => elgg_echo('messages:inbox'),
			'href' => "messages/inbox/" . elgg_get_logged_in_user_entity()->username,
			'context' => 'messages',
		));
		
		elgg_register_menu_item('page', array(
			'name' => 'messages:sentmessages',
			'text' => elgg_echo('messages:sentmessages'),
			'href' => "messages/sent/" . elgg_get_logged_in_user_entity()->username,
			'context' => 'messages',
		));		
	}

	elgg_register_event_handler('pagesetup', 'system', 'messages_notifier');

	// Extend system CSS with our own styles, which are defined in the messages/css view
	elgg_extend_view('css/elgg', 'messages/css');
	elgg_extend_view('js/elgg', 'messages/js');
	
	// Register a page handler, so we can have nice URLs
	elgg_register_page_handler('messages', 'messages_page_handler');

	// Register a URL handler
	elgg_register_entity_url_handler('object', 'messages', 'messages_url');

	// Extend avatar hover menu
	elgg_register_plugin_hook_handler('register', 'menu:user_hover', 'messages_user_hover_menu');

	// Register a notification handler for site messages
	register_notification_handler("site", "messages_site_notify_handler");
	elgg_register_plugin_hook_handler('notify:entity:message', 'object', 'messages_notification_msg');
	register_notification_object('object', 'messages', elgg_echo('messages:new'));

	// ecml
	elgg_register_plugin_hook_handler('get_views', 'ecml', 'messages_ecml_views_hook');

	// permission overrides
	elgg_register_plugin_hook_handler('permissions_check:metadata', 'object', 'messages_can_edit_metadata');
	elgg_register_plugin_hook_handler('permissions_check', 'object', 'messages_can_edit');
	elgg_register_plugin_hook_handler('container_permissions_check', 'object', 'messages_can_edit_container');

	// Register actions
	$action_path = elgg_get_plugins_path() . 'messages/actions/messages';
	elgg_register_action("messages/send", "$action_path/send.php");
	elgg_register_action("messages/delete", "$action_path/delete.php");
	elgg_register_action("messages/process", "$action_path/process.php");
}

/**
 * Messages page handler
 *
 * @param array $page Array of URL components for routing
 * @return void
 */
function messages_page_handler($page) {

	elgg_load_library('elgg:messages');

	elgg_push_breadcrumb(elgg_echo('messages'), 'messages/inbox/' . elgg_get_logged_in_user_entity()->username);

	if (!isset($page[0])) {
		$page[0] = 'inbox';
	}

	// supporting the old inbox url /messages/<username>
	$user = get_user_by_username($page[0]);
	if ($user) {
		$page[1] = $page[0];
		$page[0] = 'inbox';
	}

	if (!isset($page[1])) {
		$page[1] = elgg_get_logged_in_user_entity()->username;
	}

	$base_dir = elgg_get_plugins_path() . 'messages/pages/messages';

	switch ($page[0]) {
		case 'inbox':
			set_input('username', $page[1]);
			include("$base_dir/inbox.php");
			break;
		case 'sent':
			set_input('username', $page[1]);
			include("$base_dir/sent.php");
			break;
		case 'read':
			set_input('guid', $page[1]);
			include("$base_dir/read.php");
			break;
		case 'compose':
		case 'add':
			include("$base_dir/send.php");
			break;
	}
}

/**
 * Display notification of new messages in topbar
 */
function messages_notifier() {
	if (elgg_is_logged_in()) {
		$class = "elgg-icon elgg-icon-mail";
		$text = "<span class='$class'></span>";

		// get unread messages
		$num_messages = (int)messages_count_unread();
		if ($num_messages != 0) {
			$text .= "<span class=\"messages-new\">$num_messages</span>";
		}

		elgg_register_menu_item('topbar', array(
			'name' => 'messages',
			'href' => 'messages/inbox/' . elgg_get_logged_in_user_entity()->username,
			'text' => $text,
			'priority' => 600,
		));
	}
}

/**
 * Override the canEditMetadata function to return true for messages
 *
 */
function messages_can_edit_metadata($hook_name, $entity_type, $return_value, $parameters) {

	global $messagesendflag;

	if ($messagesendflag == 1) {
		$entity = $parameters['entity'];
		if ($entity->getSubtype() == "messages") {
			return true;
		}
	}

	return $return_value;
}

/**
 * Override the canEdit function to return true for messages within a particular context.
 *
 */
function messages_can_edit($hook_name, $entity_type, $return_value, $parameters) {

	global $messagesendflag;

	if ($messagesendflag == 1) {
		$entity = $parameters['entity'];
		if ($entity->getSubtype() == "messages") {
			return true;
		}
	}

	return $return_value;
}

/**
 * Prevent messages from generating a notification
 */
function messages_notification_msg($hook_name, $entity_type, $return_value, $params) {

	if ($params['entity'] instanceof ElggEntity) {
		if ($params['entity']->getSubtype() == 'messages') {
			return false;
		}
	}
}

/**
 * Override the canEdit function to return true for messages within a particular context.
 *
 */
function messages_can_edit_container($hook_name, $entity_type, $return_value, $parameters) {

	global $messagesendflag;

	if ($messagesendflag == 1) {
		return true;
	}

	return $return_value;
}

/**
 * Send an internal message
 *
 * @param string $subject The subject line of the message
 * @param string $body The body of the mesage
 * @param int $send_to The GUID of the user to send to
 * @param int $from Optionally, the GUID of the user to send from
 * @param int $reply The GUID of the message to reply from (default: none)
 * @param true|false $notify Send a notification (default: true)
 * @param true|false $add_to_sent If true (default), will add a message to the sender's 'sent' tray
 * @return bool
 */
function messages_send($subject, $body, $send_to, $from = 0, $reply = 0, $notify = true, $add_to_sent = true) {

	global $messagesendflag;
	$messagesendflag = 1;

	global $messages_pm;
	if ($notify) {
		$messages_pm = 1;
	} else {
		$messages_pm = 0;
	}

	// If $from == 0, set to current user
	if ($from == 0) {
		$from = (int) elgg_get_logged_in_user_guid();
	}

	// Initialise 2 new ElggObject
	$message_to = new ElggObject();
	$message_sent = new ElggObject();
	$message_to->subtype = "messages";
	$message_sent->subtype = "messages";
	$message_to->owner_guid = $send_to;
	$message_to->container_guid = $send_to;
	$message_sent->owner_guid = $from;
	$message_sent->container_guid = $from;
	$message_to->access_id = ACCESS_PUBLIC;
	$message_sent->access_id = ACCESS_PUBLIC;
	$message_to->title = $subject;
	$message_to->description = $body;
	$message_sent->title = $subject;
	$message_sent->description = $body;
	$message_to->toId = $send_to; // the user receiving the message
	$message_to->fromId = $from; // the user receiving the message
	$message_to->readYet = 0; // this is a toggle between 0 / 1 (1 = read)
	$message_to->hiddenFrom = 0; // this is used when a user deletes a message in their sentbox, it is a flag
	$message_to->hiddenTo = 0; // this is used when a user deletes a message in their inbox
	$message_sent->toId = $send_to; // the user receiving the message
	$message_sent->fromId = $from; // the user receiving the message
	$message_sent->readYet = 0; // this is a toggle between 0 / 1 (1 = read)
	$message_sent->hiddenFrom = 0; // this is used when a user deletes a message in their sentbox, it is a flag
	$message_sent->hiddenTo = 0; // this is used when a user deletes a message in their inbox

	$message_to->msg = 1;
	$message_sent->msg = 1;

	// Save the copy of the message that goes to the recipient
	$success = $message_to->save();

	// Save the copy of the message that goes to the sender
	if ($add_to_sent) {
		$success2 = $message_sent->save();
	}

	$message_to->access_id = ACCESS_PRIVATE;
	$message_to->save();

	if ($add_to_sent) {
		$message_sent->access_id = ACCESS_PRIVATE;
		$message_sent->save();
	}

	// if the new message is a reply then create a relationship link between the new message
	// and the message it is in reply to
	if ($reply && $success){
		$create_relationship = add_entity_relationship($message_sent->guid, "reply", $reply);
	}

	$message_contents = strip_tags($body);
	if ($send_to != elgg_get_logged_in_user_entity() && $notify) {
		$subject = elgg_echo('messages:email:subject');
		$body = elgg_echo('messages:email:body', array(
			elgg_get_logged_in_user_entity()->name,
			$message_contents,
			elgg_get_site_url() . "messages/inbox/" . $user->username,
			elgg_get_logged_in_user_entity()->name,
			elgg_get_site_url() . "messages/compose?send_to=" . elgg_get_logged_in_user_guid()
		));

		notify_user($send_to, elgg_get_logged_in_user_guid(), $subject, $body);
	}

	$messagesendflag = 0;
	return $success;
}

/**
 * Message URL override
 *
 * @param ElggObject $message
 * @return string
 */
function messages_url($message) {
	$url = elgg_get_site_url() . 'messages/read/' . $message->getGUID();
	return $url;
}

function count_unread_messages() {
	elgg_deprecated_notice('Your theme is using count_unread_messages which has been deprecated for messages_count_unread()', 1.8);
	return messages_count_unread();
}

/**
 * Count the unread messages in a user's inbox
 *
 * @return int
 */
function messages_count_unread() {
	$user_guid = elgg_get_logged_in_user_guid();
	$db_prefix = elgg_get_config('dbprefix');

	// denormalize the md to speed things up.
	// seriously, 10 joins if you don't.
	$strings = array('toId', $user_guid, 'readYet', 0, 'msg', 1);
	$map = array();
	foreach ($strings as $string) {
		$id = get_metastring_id($string);
		$map[$string] = $id;
	}

	$options = array(
//		'metadata_name_value_pairs' => array(
//			'toId' => elgg_get_logged_in_user_guid(),
//			'readYet' => 0,
//			'msg' => 1
//		),
		'joins' => array(
			"JOIN {$db_prefix}metadata msg_toId on e.guid = msg_toId.entity_guid",
			"JOIN {$db_prefix}metadata msg_readYet on e.guid = msg_readYet.entity_guid",
			"JOIN {$db_prefix}metadata msg_msg on e.guid = msg_msg.entity_guid",
		),
		'wheres' => array(
			"msg_toId.name_id='{$map['toId']}' AND msg_toId.value_id='{$map[$user_guid]}'",
			"msg_readYet.name_id='{$map['readYet']}' AND msg_readYet.value_id='{$map[0]}'",
			"msg_msg.name_id='{$map['msg']}' AND msg_msg.value_id='{$map[1]}'",
		),
		'owner_guid' => $user_guid,
		'limit' => 0
	);

	$num_messages = elgg_get_entities_from_metadata($options);

	if (is_array($num_messages)) {
		return sizeof($num_messages);
	}

	return 0;
}

/**
 * Notification handler
 *
 * @param ElggEntity $from
 * @param ElggUser   $to
 * @param string     $subject
 * @param string     $message
 * @param array      $params
 * @return bool
 */
function messages_site_notify_handler(ElggEntity $from, ElggUser $to, $subject, $message, array $params = NULL) {

	if (!$from) {
		throw new NotificationException(elgg_echo('NotificationException:MissingParameter', array('from')));
	}

	if (!$to) {
		throw new NotificationException(elgg_echo('NotificationException:MissingParameter', array('to')));
	}

	global $messages_pm;
	if (!$messages_pm) {
		return messages_send($subject, $message, $to->guid, $from->guid, 0, false, false);
	}

	return true;
}

/**
 * Add to the user hover menu
 */
function messages_user_hover_menu($hook, $type, $return, $params) {
	$user = $params['entity'];

	if (elgg_is_logged_in() && elgg_get_logged_in_user_guid() != $user->guid) {
		$url = "messages/compose?send_to={$user->guid}";
		$item = new ElggMenuItem('send', elgg_echo('messages:sendmessage'), $url);
		$item->setSection('action');
		$return[] = $item;
	}

	return $return;
}


/**
 * Register messages with ECML.
 *
 * @param string $hook
 * @param string $entity_type
 * @param array $return_value
 * @param unknown_type $params
 */
function messages_ecml_views_hook($hook, $entity_type, $return_value, $params) {
	$return_value['messages/messages'] = elgg_echo('messages');

	return $return_value;
}