* Calendar - new placeholders {{participant_emails}} for non-declined participants and {{participant_summary}} for a summary of participants by status

calendar/inc/class.calendar_merge.inc.php

@@ -249,6 +249,12 @@ class calendar_merge extends Api\Storage\Merge
 				$replacements['$$'.($prefix ? $prefix . '/' : '') . "calendar_participants/{$t_id}$$"] = implode(', ',$type);
 			}
 		}
+		// Participant email list (not declined)
+		$this->participant_emails($replacements, $record, $prefix, $content);
+
+		// Add participant summary
+		$this->participant_summary($replacements, $record, $prefix, $content);
+
 		if(!$replacements['$$'.($prefix ? $prefix . '/' : '') . 'calendar_recur_type$$'])
 		{
 			// Need to set it to '' if not set or previous record may be used
@@ -288,6 +294,88 @@ class calendar_merge extends Api\Storage\Merge
 		return $replacements;
 	}
 
+	/**
+	 * Generate placeholder(s) for email addresses of all participants who have
+	 * them.
+	 *
+	 * @param Array $replacements Array of replacements
+	 * @param calendar_egw_record $record Event record
+	 * @param string $prefix Prefix of placeholder
+	 * @param string $content Content with placeholders in it
+	 */
+	public function participant_emails(&$replacements, &$record, $prefix, &$content)
+	{
+		// Early exit if the placeholder is not used
+		if(strpos($content, '$$'.($prefix?$prefix.'/':'').'participant_emails$$') === FALSE)
+		{
+			return false;
+		}
+
+		$emails = array();
+		foreach($record->participants as $uid => $status)
+		{
+			// Skip rejected
+			if (in_array(substr($status, 0, 1), array('R')))
+			{
+				continue;
+			}
+
+			$info = $this->bo->resource_info($uid);
+			if($info['email'])
+			{
+				$emails[] = $info['email'];
+			}
+		}
+		$replacements['$$'.($prefix?$prefix.'/':'').'participant_emails$$'] = implode(', ', $emails);
+	}
+
+	/**
+	 * Generate placeholder for a summary of participant status:
+	 * 3 Participants: 1 Accepted, 2 Unknown
+	 *
+	 * Blank if only one participant, matches what's shown in UI event hover
+	 *
+	 * @param Array $replacements Array of replacements
+	 * @param calendar_egw_record $record Event record
+	 * @param string $prefix Prefix of placeholder
+	 * @param string $content Content with placeholders in it
+	 */
+	public function participant_summary(&$replacements, &$record, $prefix, &$content)
+	{
+		// Early exit if the placeholder is not used
+		if(strpos($content, '$$'.($prefix?$prefix.'/':'').'participant_summary$$') === FALSE)
+		{
+			return false;
+		}
+
+		$placeholder = '$$'.($prefix?$prefix.'/':'').'participant_summary$$';
+
+		// No summary for 1 participant
+		if(count($record->participants) < 2)
+		{
+			$replacements[$placeholder] = '';
+		}
+
+		$participant_status = array('A' => 0, 'R' => 0, 'T' => 0, 'U' => 0, 'D' => 0);
+		$status_label = array('A' => 'accepted', 'R' => 'rejected', 'T' => 'tentative', 'U' => 'unknown', 'D' => 'delegated');
+		$participant_summary = count($record->participants) . ' ' . lang('Participants').': ';
+		$status_totals = [];
+
+		foreach($record->participants as $uid => $status)
+		{
+			$participant_status[substr($status,0,1)]++;
+		}
+		foreach($participant_status as $status => $count)
+		{
+			if($count > 0)
+			{
+				$status_totals[] = $count . ' ' . lang($status_label[$status]);
+			}
+		}
+		$summary = $participant_summary . join(', ',$status_totals);
+		$replacements[$placeholder] = $summary;
+	}
+
 	/**
 	* Table plugin for event
 	* Lists events for a certain day of the week.  Only works for one week at a time, so for multiple weeks,
@@ -795,6 +883,9 @@ class calendar_merge extends Api\Storage\Merge
 
 
 		echo '<tr><td colspan="4"><h3>'.lang('Participants').":</h3></td></tr>";
+		echo '<tr><td>{{participant_emails}}</td><td colspan="3">'.lang('A list of email addresses of all participants who have not declined')."</td></tr>\n";
+		echo '<tr><td>{{participant_summary}}</td><td colspan="3">'.lang('Summary of participant status: 3 Participants: 1 Accepted, 2 Unknown')."</td></tr>\n";
+		echo '<tr><td colspan="4">'.lang('Participant names by type').'</td></tr>';
 		echo '<tr><td>{{calendar_participants/account}}</td><td colspan="3">'.lang('Accounts')."</td></tr>\n";
 		echo '<tr><td>{{calendar_participants/group}}</td><td colspan="3">'.lang('Groups')."</td></tr>\n";
 		foreach($this->bo->resources as $resource)

calendar/lang/egw_en.lang

@@ -15,6 +15,7 @@
 (without a custom url we use nation of user preference to load holidays from %s)	calendar	en	(Without a custom URL we use nation of user preference to load holidays from %s)
 , exceptions preserved	calendar	en	, exceptions preserved
 , stati of participants reset	calendar	en	, status of participants reset
+a list of email addresses of all participants who have not declined	calendar	en	A list of email addresses of all participants who have not declined
 a non blocking event will not conflict with other events	calendar	en	A non blocking event will not conflict with other events
 accept	calendar	en	Accept
 accept or reject an invitation	calendar	en	Accept or reject an invitation
@@ -401,6 +402,7 @@ open todo's:	calendar	en	Open ToDo's:
 optional	calendar	en	Optional
 overlap holiday	calendar	en	Overlap holiday
 owner too	calendar	en	Owner too
+participant names by type	calendar	en	Participant names by type
 participant table	calendar	en	Participant table
 participants	calendar	en	Participants
 participants disinvited from an event	calendar	en	Participants disinvited from an event
@@ -524,6 +526,7 @@ status for all future scheduled days changed	calendar	en	Status for all future s
 status for this particular day changed	calendar	en	Status for this particular day changed.
 status of participants set to unknown because of missing category rights	calendar	en	Status of participants set to unknown because of missing category rights.
 submit to repository	calendar	en	Submit to repository
+summary of participant status: 3 participants: 1 accepted, 2 unknown	calendar	en	Summary of participant status: 3 Participants: 1 Accepted, 2 Unknown
 sun	calendar	en	Sun
 tag to mark positions for address labels	calendar	en	Tag to mark positions for address labels
 tentative	calendar	en	Tentative