aboutsummaryrefslogtreecommitdiff
path: root/mod/groups/start.php
blob: b87acbaec0a1140ddbd1da4d647cbbfa2d128461 (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
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
<?php
	/**
	 * Elgg groups plugin
	 *
	 * @package ElggGroups
	 */

	/**
	 * Initialise the groups plugin.
	 * Register actions, set up menus
	 */
	function groups_init() {

		global $CONFIG;

		// Set up the menu
		add_menu(elgg_echo('groups'), $CONFIG->wwwroot . "pg/groups/world/");

		// Register a page handler, so we can have nice URLs
		register_page_handler('groups','groups_page_handler');

		// Register a URL handler for groups and forum topics
		register_entity_url_handler('groups_url','group','all');
		register_entity_url_handler('groups_groupforumtopic_url','object','groupforumtopic');

		// Register an icon handler for groups
		register_page_handler('groupicon','groups_icon_handler');

		// Register some actions
		register_action("groups/edit",false, $CONFIG->pluginspath . "groups/actions/edit.php");
		register_action("groups/delete",false, $CONFIG->pluginspath . "groups/actions/delete.php");
		register_action("groups/join",false, $CONFIG->pluginspath . "groups/actions/join.php");
		register_action("groups/leave",false, $CONFIG->pluginspath . "groups/actions/leave.php");
		register_action("groups/joinrequest",false, $CONFIG->pluginspath . "groups/actions/joinrequest.php");
		register_action("groups/killrequest",false,$CONFIG->pluginspath . "groups/actions/groupskillrequest.php");
		register_action("groups/killinvitation",false,$CONFIG->pluginspath . "groups/actions/groupskillinvitation.php");
		register_action("groups/addtogroup",false, $CONFIG->pluginspath . "groups/actions/addtogroup.php");
		register_action("groups/invite",false, $CONFIG->pluginspath . "groups/actions/invite.php");

		// Use group widgets
		use_widgets('groups');

		// Add a page owner handler
		add_page_owner_handler('groups_page_owner_handler');

		// Add some widgets
		add_widget_type('a_users_groups',elgg_echo('groups:widget:membership'), elgg_echo('groups:widgets:description'));


		//extend some views
		elgg_extend_view('profile/icon','groups/icon');
		elgg_extend_view('css','groups/css');

		// Access permissions
		register_plugin_hook('access:collections:write', 'all', 'groups_write_acl_plugin_hook');
		//register_plugin_hook('access:collections:read', 'all', 'groups_read_acl_plugin_hook');

		// Notification hooks
		if (is_callable('register_notification_object'))
			register_notification_object('object', 'groupforumtopic', elgg_echo('groupforumtopic:new'));
		register_plugin_hook('object:notifications','object','group_object_notifications_intercept');

		// Listen to notification events and supply a more useful message
		register_plugin_hook('notify:entity:message', 'object', 'groupforumtopic_notify_message');

		// add the forum tool option
		add_group_tool_option('forum',elgg_echo('groups:enableforum'),true);

		// Now override icons
		register_plugin_hook('entity:icon:url', 'group', 'groups_groupicon_hook');

		// Register profile menu hook
		register_plugin_hook('profile_menu', 'profile', 'forum_profile_menu');
		register_plugin_hook('profile_menu', 'profile', 'activity_profile_menu');

		// allow ecml in discussion and profiles
		register_plugin_hook('get_views', 'ecml', 'groups_ecml_views_hook');
		register_plugin_hook('get_views', 'ecml', 'groupprofile_ecml_views_hook');

	}

	/**
	 * Event handler for group forum posts
	 *
	 */
	function group_object_notifications($event, $object_type, $object) {

		static $flag;
		if (!isset($flag)) $flag = 0;

		if (is_callable('object_notifications'))
		if ($object instanceof ElggObject) {
			if ($object->getSubtype() == 'groupforumtopic') {
				//if ($object->countAnnotations('group_topic_post') > 0) {
				if ($flag == 0) {
					$flag = 1;
					object_notifications($event, $object_type, $object);
				}
				//}
			}
		}

	}

	/**
	 * Intercepts the notification on group topic creation and prevents a notification from going out
	 * (because one will be sent on the annotation)
	 *
	 * @param unknown_type $hook
	 * @param unknown_type $entity_type
	 * @param unknown_type $returnvalue
	 * @param unknown_type $params
	 * @return unknown
	 */
		function group_object_notifications_intercept($hook, $entity_type, $returnvalue, $params) {
			if (isset($params)) {
				if ($params['event'] == 'create' && $params['object'] instanceof ElggObject) {
					if ($params['object']->getSubtype() == 'groupforumtopic') {
						return true;
					}
				}
			}
			return null;
		}

		/**
		 * Returns a more meaningful message
		 *
		 * @param unknown_type $hook
		 * @param unknown_type $entity_type
		 * @param unknown_type $returnvalue
		 * @param unknown_type $params
		 */
		function groupforumtopic_notify_message($hook, $entity_type, $returnvalue, $params)
		{
			$entity = $params['entity'];
			$to_entity = $params['to_entity'];
			$method = $params['method'];
			if (($entity instanceof ElggEntity) && ($entity->getSubtype() == 'groupforumtopic'))
			{

				$descr = $entity->description;
				$title = $entity->title;
				global $CONFIG;
				$url = $entity->getURL();

				$msg = get_input('topicmessage');
				if (empty($msg)) $msg = get_input('topic_post');
				if (!empty($msg)) $msg = $msg . "\n\n"; else $msg = '';

				$owner = get_entity($entity->container_guid);
				if ($method == 'sms') {
					return elgg_echo("groupforumtopic:new") . ': ' . $url . " ({$owner->name}: {$title})";
				} else {
					return $_SESSION['user']->name . ' ' . elgg_echo("groups:viagroups") . ': ' . $title . "\n\n" . $msg . "\n\n" . $entity->getURL();
				}

			}
			return null;
		}

	/**
	 * This function loads a set of default fields into the profile, then triggers a hook letting other plugins to edit
	 * add and delete fields.
	 *
	 * Note: This is a secondary system:init call and is run at a super low priority to guarantee that it is called after all
	 * other plugins have initialised.
	 */
	function groups_fields_setup()
	{
		global $CONFIG;

		$profile_defaults = array(

			'name' => 'text',
			'description' => 'longtext',
			'briefdescription' => 'text',
			'interests' => 'tags',
			//'website' => 'url',
		);

		$CONFIG->group = trigger_plugin_hook('profile:fields', 'group', NULL, $profile_defaults);

		// register any tag metadata names
		foreach ($CONFIG->group as $name => $type) {
			if ($type == 'tags') {
				elgg_register_tag_metadata_name($name);

				// register a tag name translation
				add_translation(get_current_language(), array("tag_names:$name" => elgg_echo("groups:$name")));
			}
		}
	}

	/**
	 * Sets up submenus for the groups system.  Triggered on pagesetup.
	 *
	 */
	function groups_submenus() {
		global $CONFIG;

		// Get the page owner entity
		$page_owner = page_owner_entity();

		if (get_context() == 'groups') {
			if ($page_owner instanceof ElggGroup) {
				if (isloggedin() && $page_owner->canEdit() && !$page_owner->isPublicMembership()) {
					$url = "{$CONFIG->wwwroot}mod/groups/membershipreq.php?group_guid={$page_owner->getGUID()}";
					add_submenu_item(elgg_echo('groups:membershiprequests'), $url, 'groupsactions1');
				}
			} else {
				add_submenu_item(elgg_echo('groups:all'), "{$CONFIG->wwwroot}pg/groups/world/", 'groupslinks1');

				if ($user = get_loggedin_user()) {
					add_submenu_item(elgg_echo('groups:owned'), "{$CONFIG->wwwroot}pg/groups/owned/$user->username", 'groupslinks1');
					add_submenu_item(elgg_echo('groups:yours'), "{$CONFIG->wwwroot}pg/groups/member/$user->username", 'groupslinks1');
					add_submenu_item(elgg_echo('groups:invitations'), "{$CONFIG->wwwroot}pg/groups/invitations/$user->username", 'groupslinks1');
				}
			}
		}
	}

	/**
	 * Set a page owner handler.
	 *
	 */
	function groups_page_owner_handler()
	{
		$group_guid = get_input('group_guid');
		if ($group_guid)
		{
			$group = get_entity($group_guid);
			if ($group instanceof ElggGroup)
				return $group->owner_guid;
		}

		return false;
	}

	/**
	 * Group page handler
	 *
	 * @param array $page Array of page elements, forwarded by the page handling mechanism
	 */
	function groups_page_handler($page)
	{
		global $CONFIG;


		if (isset($page[0]))
		{
			// See what context we're using
			switch($page[0])
			{
				case 'invitations':
					include($CONFIG->pluginspath . "groups/invitations.php");
					$user_guid = get_loggedin_userid();

					$invitations = elgg_get_entities_from_relationship(array(
						'relationship' => 'membership_request',
						'guid' => $user_guid
					));

					break;

				case "new" :
					include($CONFIG->pluginspath . "groups/new.php");
				break;
				case "world":
					set_context('groups');
					set_page_owner(0);
					include($CONFIG->pluginspath . "groups/all.php");
				break;
				case "forum":
					set_input('group_guid', $page[1]);
					include($CONFIG->pluginspath . "groups/forum.php");
				break;
				case "edittopic":
					set_input('group', $page[1]);
					set_input('topic', $page[2]);
					include($CONFIG->pluginspath . "groups/edittopic.php");
				break;
				case "activity":
					set_input('group', $page[1]);
					include($CONFIG->pluginspath . "groups/activity.php");
				break;
				case "owned" :
					// Owned by a user
					if (isset($page[1]))
						set_input('username',$page[1]);

					include($CONFIG->pluginspath . "groups/index.php");
				break;
				case "member" :
					// User is a member of
					if (isset($page[1]))
						set_input('username',$page[1]);

					include($CONFIG->pluginspath . "groups/membership.php");
				break;
				default:
					set_input('group_guid', $page[0]);
					include($CONFIG->pluginspath . "groups/groupprofile.php");
				break;
			}
		}

	}

	/**
	 * Handle group icons.
	 *
	 * @param unknown_type $page
	 */
	function groups_icon_handler($page) {

		global $CONFIG;

		// The username should be the file we're getting
		if (isset($page[0])) {
			set_input('group_guid',$page[0]);
		}
		if (isset($page[1])) {
			set_input('size',$page[1]);
		}
		// Include the standard profile index
		include($CONFIG->pluginspath . "groups/graphics/icon.php");

	}

	/**
	 * Populates the ->getUrl() method for group objects
	 *
	 * @param ElggEntity $entity File entity
	 * @return string File URL
	 */
	function groups_url($entity) {

		global $CONFIG;

		$title = elgg_get_friendly_title($entity->name);

		return $CONFIG->url . "pg/groups/{$entity->guid}/$title/";
	}

	function groups_groupforumtopic_url($entity) {

		global $CONFIG;
		return $CONFIG->url . 'mod/groups/topicposts.php?topic='. $entity->guid .'&group_guid=' . $entity->container_guid;

	}

	/**
	 * Groups created so create an access list for it
	 */
	function groups_create_event_listener($event, $object_type, $object)
	{
		$ac_name = elgg_echo('groups:group') . ": " . $object->name;
		$group_id = create_access_collection($ac_name, $object->guid);
		if ($group_id) {
			$object->group_acl = $group_id;
		} else {
			// delete group if access creation fails
			return false;
		}

		return true;
	}

	/**
	 * Hook to listen to read access control requests and return all the groups you are a member of.
	 */
	function groups_read_acl_plugin_hook($hook, $entity_type, $returnvalue, $params)
	{
		//error_log("READ: " . var_export($returnvalue));
		$user = $_SESSION['user'];
		if ($user)
		{
			// Not using this because of recursion.
			// Joining a group automatically add user to ACL,
			// So just see if they're a member of the ACL.
			//$membership = get_users_membership($user->guid);

			$members = get_members_of_access_collection($group->group_acl);
			print_r($members);
			exit;

			if ($membership)
			{
				foreach ($membership as $group)
					$returnvalue[$user->guid][$group->group_acl] = elgg_echo('groups:group') . ": " . $group->name;
				return $returnvalue;
			}
		}
	}

	/**
	 * Return the write access for the current group if the user has write access to it.
	 */
	function groups_write_acl_plugin_hook($hook, $entity_type, $returnvalue, $params)
	{
		$page_owner = page_owner_entity();
		if (!$loggedin = get_loggedin_user()) {
			return $returnvalue;
		}

		// only insert group access for current group
		if ($page_owner instanceof ElggGroup && $loggedin) {
			if ($page_owner->isMember($loggedin)) {
				$returnvalue[$page_owner->group_acl] = elgg_echo('groups:group') . ': ' . $page_owner->name;

				unset($returnvalue[ACCESS_FRIENDS]);
			}
		} else {
			// if the user owns the group, remove all access collections manually
			// this won't be a problem once the group itself owns the acl.
			$groups = elgg_get_entities_from_relationship(array(
				'relationship' => 'member',
				'relationship_guid' => $loggedin->getGUID(),
				'inverse_relationship' => FALSE,
				'limit' => 999
			));

			foreach ($groups as $group) {
				unset($returnvalue[$group->group_acl]);
			}
		}

		return $returnvalue;
	}

	/**
	 * Groups deleted, so remove access lists.
	 */
	function groups_delete_event_listener($event, $object_type, $object)
	{
		delete_access_collection($object->group_acl);

		return true;
	}

	/**
	 * Listens to a group join event and adds a user to the group's access control
	 *
	 */
	function groups_user_join_event_listener($event, $object_type, $object) {

		$group = $object['group'];
		$user = $object['user'];
		$acl = $group->group_acl;

		add_user_to_access_collection($user->guid, $acl);

		return true;
	}

	/**
	 * Listens to a group leave event and removes a user from the group's access control
	 *
	 */
	function groups_user_leave_event_listener($event, $object_type, $object) {

		$group = $object['group'];
		$user = $object['user'];
		$acl = $group->group_acl;

		remove_user_from_access_collection($user->guid, $acl);

		return true;
	}

	/**
	 * This hooks into the getIcon API and provides nice user icons for users where possible.
	 *
	 * @param unknown_type $hook
	 * @param unknown_type $entity_type
	 * @param unknown_type $returnvalue
	 * @param unknown_type $params
	 * @return unknown
	 */
	function groups_groupicon_hook($hook, $entity_type, $returnvalue, $params)
	{
		global $CONFIG;

		if ((!$returnvalue) && ($hook == 'entity:icon:url') && ($params['entity'] instanceof ElggGroup))
		{
			$entity = $params['entity'];
			$type = $entity->type;
			$viewtype = $params['viewtype'];
			$size = $params['size'];

			if ($icontime = $entity->icontime) {
				$icontime = "{$icontime}";
			} else {
				$icontime = "default";
			}

			$filehandler = new ElggFile();
			$filehandler->owner_guid = $entity->owner_guid;
			$filehandler->setFilename("groups/" . $entity->guid . $size . ".jpg");

			if ($filehandler->exists()) {
				$url = $CONFIG->url . "pg/groupicon/{$entity->guid}/$size/$icontime.jpg";

				return $url;
			}
		}
	}

	/**
	 * A simple function to see who can edit a group discussion post
	 * @param the comment $entity
	 * @param user who owns the group $group_owner
	 * @return boolean
	 */
	function groups_can_edit_discussion($entity, $group_owner)
	{

		//logged in user
		$user = $_SESSION['user']->guid;

		if (($entity->owner_guid == $user) || $group_owner == $user || isadminloggedin()) {
			return true;
		}else{
			return false;
		}

	}

	/**
	 * Overrides topic post getURL() value.
	 *
	 */
	function group_topicpost_url($annotation) {
		if ($parent = get_entity($annotation->entity_guid)) {
			global $CONFIG;
			return $CONFIG->wwwroot . 'mod/groups/topicposts.php?topic='.$parent->guid.'&amp;group_guid='.$parent->container_guid.'#' . $annotation->id;
		}
	}

	/**
	 * Grabs groups by invitations
	 * Have to override all access until there's a way override access to getter functions.
	 *
	 * @param $user_guid
	 * @return unknown_type
	 */
	function groups_get_invited_groups($user_guid, $return_guids = FALSE) {
		$ia = elgg_set_ignore_access(TRUE);
		$invitations = elgg_get_entities_from_relationship(array('relationship' => 'invited', 'relationship_guid' => $user_guid, 'inverse_relationship' => TRUE, 'limit' => 9999));
		elgg_set_ignore_access($ia);

		if ($return_guids) {
			$guids = array();
			foreach ($invitations as $invitation) {
				$guids[] = $invitation->getGUID();
			}

			return $guids;
		}

		return $invitations;
	}

	/**
	 * Function to use on groups for access. It will house private, loggedin, public,
	 * and the group itself. This is when you don't want other groups or channels in the access options available
	 * Returns an array
	 **/

	function group_access_options($group){
		$access_array = array(0 => 'private',1 => 'logged in users',2 => 'public',$group->group_acl => 'Group: ' . $group->name );
		return $access_array;
	}

	function forum_profile_menu($hook, $entity_type, $return_value, $params) {
		global $CONFIG;

		if ($params['owner'] instanceof ElggGroup && $group_owner->forum_enable != 'no') {
			$return_value[] = array(
				'text' => elgg_echo('groups:forum'),
				'href' => "{$CONFIG->url}pg/groups/forum/{$params['owner']->getGUID()}"
			);
		}
		return $return_value;
	}
	
	function activity_profile_menu($hook, $entity_type, $return_value, $params) {
		global $CONFIG;

		if ($params['owner'] instanceof ElggGroup) {
			$return_value[] = array(
				'text' => elgg_echo('Activity'),
				'href' => "{$CONFIG->url}pg/groups/activity/{$params['owner']->getGUID()}"
			);
		}
		return $return_value;
	}

	/**
	 * Parse ECML on group discussion views
	 *
	 * @param unknown_type $hook
	 * @param unknown_type $entity_type
	 * @param unknown_type $return_value
	 * @param unknown_type $params
	 */
	function groups_ecml_views_hook($hook, $entity_type, $return_value, $params) {
		$return_value['forum/viewposts'] = elgg_echo('groups:ecml:discussion');

		return $return_value;
	}
	/**
	 * Parse ECML on group profiles
	 *
	 * @param unknown_type $hook
	 * @param unknown_type $entity_type
	 * @param unknown_type $return_value
	 * @param unknown_type $params
	 */
	function groupprofile_ecml_views_hook($hook, $entity_type, $return_value, $params) {
		$return_value['groups/groupprofile'] = elgg_echo('groups:ecml:groupprofile');

		return $return_value;
	}

	register_extender_url_handler('group_topicpost_url','annotation', 'group_topic_post');

	// Register a handler for create groups
	register_elgg_event_handler('create', 'group', 'groups_create_event_listener');

	// Register a handler for delete groups
	register_elgg_event_handler('delete', 'group', 'groups_delete_event_listener');

	// Make sure the groups initialisation function is called on initialisation
	register_elgg_event_handler('init','system','groups_init');
	register_elgg_event_handler('init','system','groups_fields_setup', 10000); // Ensure this runs after other plugins
	register_elgg_event_handler('join','group','groups_user_join_event_listener');
	register_elgg_event_handler('leave','group','groups_user_leave_event_listener');
	register_elgg_event_handler('pagesetup','system','groups_submenus');
	register_elgg_event_handler('annotate','all','group_object_notifications');

	// Register actions
	global $CONFIG;
	register_action("groups/addtopic",false,$CONFIG->pluginspath . "groups/actions/forums/addtopic.php");
	register_action("groups/deletetopic",false,$CONFIG->pluginspath . "groups/actions/forums/deletetopic.php");
	register_action("groups/addpost",false,$CONFIG->pluginspath . "groups/actions/forums/addpost.php");
	register_action("groups/edittopic",false,$CONFIG->pluginspath . "groups/actions/forums/edittopic.php");
	register_action("groups/deletepost",false,$CONFIG->pluginspath . "groups/actions/forums/deletepost.php");
	register_action("groups/featured",false,$CONFIG->pluginspath . "groups/actions/featured.php");
	register_action("groups/editpost",false,$CONFIG->pluginspath . "groups/actions/forums/editpost.php");

?>