Merges in BBB web conference functionality from now defunct sched_conf plugin

6 files changed, 152 insertions, 8 deletions

diff --git a/languages/en.php b/languages/en.php
index d4cb8ac9e..e23d78924 100644
--- a/languages/en.php
+++ b/languages/en.php
@@ -318,6 +318,16 @@ takes place at
 You can visit the event page here:
 %s
 	",
+			
+	/**
+	 * BBB support
+	*/
+			
+	'event_calendar:bbb_server_url' => "Big Blue Button server URL (must end with slash)",
+	'event_calendar:bbb_security_salt' => "Big Blue Button security salt",
+	'event_calendar:bbb_create_error' => "Error: unable to create BBB conference, message was: %s",
+	'event_calendar:bbb_settings_error' => "Error: must set conference URL and salt in plugin settings",
+	'event_calendar:join_conf_button' => "Join conference",
 		
 	/**
 	 * Event calendar river
diff --git a/models/model.php b/models/model.php
index 0dd72a595..cf00c4b1c 100644
--- a/models/model.php
+++ b/models/model.php
@@ -152,6 +152,7 @@ function event_calendar_set_event_from_form($event_guid,$group_guid) {
 	$event->send_reminder = get_input('send_reminder');
 	$event->reminder_number = get_input('reminder_number');
 	$event->reminder_interval = get_input('reminder_interval');
+	$event->web_conference = get_input('web_conference');
 	$event->real_end_time = event_calendar_get_end_time($event);
 	foreach ($required_fields as $fn) {
 		if (!trim($event->$fn)) {
@@ -160,6 +161,9 @@ function event_calendar_set_event_from_form($event_guid,$group_guid) {
 		}
 	}
 	if ($event->save()) {
+		if (!$event_guid && $event->web_conference) {
+			event_calendar_create_bbb_conf($event);
+		}
 		if ($group_guid && (elgg_get_plugin_setting('autogroup', 'event_calendar') == 'yes')) {
 			event_calendar_add_personal_events_from_group($event->guid,$group_guid);
 		}
@@ -173,12 +177,12 @@ function event_calendar_set_event_from_form($event_guid,$group_guid) {
 						event_calendar_add_personal_event($event->guid,$user_id);
 						if (elgg_get_plugin_setting('add_users_notify', 'event_calendar') == 'yes') {
 							notify_user($user_id, $CONFIG->site->guid, elgg_echo('event_calendar:add_users_notify:subject'),
-							sprintf(
-							elgg_echo('event_calendar:add_users_notify:body'),
-							$user->name,
-							$event->title,
-							$event->getURL()
-							)
+								sprintf(
+									elgg_echo('event_calendar:add_users_notify:body'),
+									$user->name,
+									$event->title,
+									$event->getURL()
+								)
 							);
 						}
 					}
@@ -1598,6 +1602,7 @@ function event_calendar_prepare_edit_form_vars($event = NULL) {
 		'event-calendar-repeating-saturday-value' => 0,
 		'event-calendar-repeating-sunday-value' => 0,
 		'personal_manage' => 'open',
+		'web_conference' => NULL,
 		'long_description' => NULL,
 		'access_id' => ACCESS_DEFAULT,
 		'group_guid' => NULL,
@@ -2210,3 +2215,65 @@ function event_calendar_queue_reminder($e) {
 		message_queue_set_for_sending($m->guid);
 	}
 }
+
+function event_calendar_create_bbb_conf($event) {
+	$bbb_security_salt = elgg_get_plugin_setting('bbb_security_salt','event_calendar');
+	$bbb_server_url = rtrim(elgg_get_plugin_setting('bbb_server_url','event_calendar'), '/') . '/';
+	if ($bbb_security_salt) {
+		$day_in_minutes = 60*24;
+		$duration = (int)(($event->real_end_time-$event->start_date)/60)+$day_in_minutes;
+		$title = urlencode($event->title);
+		$params = "name=$title&meetingID={$event->guid}&duration=$duration";
+		$checksum = sha1('create'.$params.$bbb_security_salt);
+		$params .= "&checksum=$checksum";
+		
+		// create curl resource
+	    $ch = curl_init();
+	
+	    // set url
+	    curl_setopt($ch, CURLOPT_URL, $bbb_server_url.'api/create?'.$params);
+	
+	    //return the transfer as a string
+	    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+	
+	    // $output contains the output string
+	    $output = curl_exec($ch);
+	
+	    // close curl resource to free up system resources
+	    curl_close($ch);
+	    
+	    /*error_log("BBB create request:");
+	    error_log($bbb_server_url.'api/create?'.$params);
+		
+	    error_log("BBB create response:");
+	    error_log($output);*/
+	    
+		$xml = new SimpleXMLElement($output);
+		if ($xml->returncode == 'SUCCESS') {
+			$event->bbb_attendee_password = (string) $xml->attendeePW;
+			$event->bbb_moderator_password = (string) $xml->moderatorPW;
+		} else {
+			register_error(elgg_echo('event_calendar:bbb_create_error',array($xml->message)));
+		}
+	} else {
+		register_error(elgg_echo('event_calendar:bbb_settings_error'));
+	}
+}
+
+function event_calendar_get_join_bbb_url($event) {
+	$bbb_security_salt = elgg_get_plugin_setting('bbb_security_salt','event_calendar');
+	$bbb_server_url = rtrim(elgg_get_plugin_setting('bbb_server_url','event_calendar'), '/') . '/';
+	$user = elgg_get_logged_in_user_entity();
+	$full_name = urlencode($user->name);
+	if ($event->canEdit()) {
+		$password = urlencode($event->bbb_moderator_password);
+	} else {
+		$password = urlencode($event->bbb_attendee_password);
+	}
+	$params = "fullName=$full_name&meetingID={$event->guid}&userID={$user->username}&password=$password";
+	$checksum = sha1('join'.$params.$bbb_security_salt);
+	$params .= "&checksum=$checksum";
+	$url = $bbb_server_url.'api/join?'.$params;
+	return $url;
+}
+
diff --git a/views/default/event_calendar/conference_button.php b/views/default/event_calendar/conference_button.php
new file mode 100644
index 000000000..f6fedf4f6
--- /dev/null
+++ b/views/default/event_calendar/conference_button.php
@@ -0,0 +1,32 @@
+<?php
+// A non-admin / non-event-creator only sees the button if they have the event on his/her personal calendar 
+// and it is at most 15 minutes before the conference starts.
+
+// The button is removed for everyone (even admins) one day after the conference ends.
+
+$event = $vars['event'];
+
+if ($event) {
+	elgg_load_library('elgg:event_calendar');
+	$user_guid = elgg_get_logged_in_user_guid();
+	$termination_time = $event->real_end_time + 60*60*24;
+	if ($termination_time < time()) {
+		$in_time_window = FALSE;
+	} else if ($event->canEdit()) {
+		$in_time_window = TRUE;
+	} else if (event_calendar_has_personal_event($event->guid, $user_guid) && ($event->start_date - 15*60) >= time()) {
+		$in_time_window = TRUE;
+	} else {
+		$in_time_window = FALSE;
+	}
+	if ( $in_time_window ) {
+		$button = elgg_view('output/url', array(
+			'href' => event_calendar_get_join_bbb_url($event),
+			'text' => elgg_echo('event_calendar:join_conf_button'),
+			'class' => 'elgg-button elgg-button-action',
+			'target' => '_blank',
+		));
+	
+		echo '<div class="event-calendar-conf-join-button">'.$button.'</div>';
+	}
+}
diff --git a/views/default/forms/event_calendar/edit.php b/views/default/forms/event_calendar/edit.php
index 260e8afe0..79e2a5d0b 100644
--- a/views/default/forms/event_calendar/edit.php
+++ b/views/default/forms/event_calendar/edit.php
@@ -26,6 +26,7 @@ $event_calendar_more_required = elgg_get_plugin_setting('more_required', 'event_
 $event_calendar_personal_manage = elgg_get_plugin_setting('personal_manage', 'event_calendar');
 $event_calendar_repeated_events = elgg_get_plugin_setting('repeated_events', 'event_calendar');
 $event_calendar_reminders = elgg_get_plugin_setting('reminders', 'event_calendar');
+$event_calendar_bbb_server_url = elgg_get_plugin_setting('bbb_server_url', 'event_calendar');
 
 if ($event_calendar_more_required == 'yes') {
 	$required_fields = array('title','venue','start_date','start_time',
@@ -168,9 +169,13 @@ $body .= elgg_view('event_calendar/container',array('container_guid'=>$vars['con
 $body .= '</p>';
 $body .= '<p class="event-calendar-description">'.$prefix['calendar'].elgg_echo('event_calendar:calendar_description').'</p>';
 
-if(elgg_plugin_exists('sched_conf')) {
+if($event_calendar_bbb_server_url) {
 	$body .= '<p>';
-	$body .= elgg_view('input/checkbox',array('name'=>'web_conference','value'=>$web_conference,'options_values'=>array('1')));
+	if ($fd['web_conference']) {
+		$body .= elgg_view('input/checkbox',array('name'=>'web_conference','value'=>1,'checked'=>'checked'));
+	} else {
+		$body .= elgg_view('input/checkbox',array('name'=>'web_conference','value'=>1));
+	}
 	$body .= elgg_echo('event_calendar:web_conference_label');
 	$body .= '</p>';
 }
diff --git a/views/default/object/event_calendar.php b/views/default/object/event_calendar.php
index 717e2803e..b72c869ea 100644
--- a/views/default/object/event_calendar.php
+++ b/views/default/object/event_calendar.php
@@ -16,6 +16,10 @@ $full = elgg_extract('full_view', $vars, FALSE);
 
 if ($full) {
 	$body = elgg_view('event_calendar/strapline',$vars);
+	if ($event->web_conference) {
+		$body .= '<br />';
+		$body .= elgg_view('event_calendar/conference_button',array('event'=>$event));
+	}
 	$event_items = event_calendar_get_formatted_full_items($event);
 	$body .= '<br />';
 	
diff --git a/views/default/plugins/event_calendar/settings.php b/views/default/plugins/event_calendar/settings.php
index 908818998..2a2e043de 100644
--- a/views/default/plugins/event_calendar/settings.php
+++ b/views/default/plugins/event_calendar/settings.php
@@ -445,4 +445,30 @@ $body .= elgg_echo('event_calendar:ical_auth_file_name:title');
 $body .= '<br />';
 $body .= elgg_view('input/text',array('name'=>'params[ical_auth_file_name]','value'=>$ical_auth_file_name, 'class'=>'event-calendar-ical-auth-setting'));
 
+$body .= '<br /><br />';
+
+$event_calendar_bbb_server_url = elgg_get_plugin_setting('bbb_server_url', 'event_calendar');
+
+$body .= elgg_echo('event_calendar:bbb_server_url');
+$body .= '<br />';
+$body .= elgg_view('input/text', array(
+	'name' => 'params[bbb_server_url]',
+	'value' => $event_calendar_bbb_server_url,
+	'class' => 'text_input',
+));
+
+$body .= '<br /><br />';
+
+$event_calendar_bbb_security_salt = elgg_get_plugin_setting('bbb_security_salt', 'event_calendar');
+
+$body .= elgg_echo('event_calendar:bbb_security_salt');
+$body .= '<br />';
+$body .= elgg_view('input/text', array(
+	'name' => 'params[bbb_security_salt]',
+	'value' => $event_calendar_bbb_security_salt,
+	'class' => 'text_input',
+));
+
+$body .= '<br /><br />';
+
 echo $body;