File 0001-Consider-recurrence-exceptions-when-comput... of Package kolab-freebusy

File 0001-Consider-recurrence-exceptions-when-computing-busy-t.patch of Package kolab-freebusy

From 64f2b531c46cd1aeeb894acfdfae375d1f4cb190 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <bruederli@kolabsys.com>
Date: Fri, 20 Feb 2015 16:28:50 +0100
Subject: [PATCH] Consider recurrence exceptions when computing busy times
 (#4665)

---
 composer-dist.json                | 14 ++++++
 composer.json                     |  2 +-
 lib/Kolab/FreeBusy/SourceIMAP.php | 91 ++++++++++++++++++++++++++++-----------
 3 files changed, 81 insertions(+), 26 deletions(-)
 create mode 100644 composer-dist.json

diff --git a/composer-dist.json b/composer-dist.json
new file mode 100644
index 0000000..e0423c9
--- /dev/null
+++ b/composer-dist.json
@@ -0,0 +1,14 @@
+{
+	"name": "kolab/free-busy",
+	"description": "Kolab Free/Busy Service",
+	"license": "AGPL-3.0",
+	"version": "1.0.5",
+	"autoload": {
+		"psr-0": {
+			"": "/usr/share/pear/"
+		},
+		"psr-4": {
+			"": "/usr/share/php/"
+		}
+	}
+}
diff --git a/composer.json b/composer.json
index 461c052..1efbef6 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
 	"name": "kolab/free-busy",
 	"description": "Kolab Free/Busy Service",
 	"license": "AGPL-3.0",
-	"version": "1.0.6",
+	"version": "1.0.7",
 	"repositories": [
 		{
 			"type": "pear",
diff --git a/lib/Kolab/FreeBusy/SourceIMAP.php b/lib/Kolab/FreeBusy/SourceIMAP.php
index 6f116b7..e0de62b 100644
--- a/lib/Kolab/FreeBusy/SourceIMAP.php
+++ b/lib/Kolab/FreeBusy/SourceIMAP.php
@@ -5,7 +5,7 @@
  *
  * @author Thomas Bruederli <bruederli@kolabsys.com>
  *
- * Copyright (C) 2013, Kolab Systems AG <contact@kolabsys.com>
+ * Copyright (C) 2013-2015, Kolab Systems AG <contact@kolabsys.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU Affero General Public License as
@@ -171,15 +171,9 @@ class SourceIMAP extends Source
 						}
 					}
 					// skip declined events
-					else if (is_array($event['attendees'])) {
-						foreach ($event['attendees'] as $attendee) {
-							if (in_array($attendee['email'], $user_email)) {
-								if ($attendee['status'] == 'DECLINED') {
-									$log->debug('Skip declined event', array($event['uid'], $event['title']));
-									continue 2;
-								}
-							}
-						}
+					else if (is_array($event['attendees']) && !$this->check_participation($event, $user_email)) {
+						$log->debug('Skip declined event', array($event['uid'], $event['title']));
+						continue;
 					}
 
 					// translate all-day dates into absolute UTC times
@@ -204,21 +198,7 @@ class SourceIMAP extends Source
 					}
 
 					// copied from libvcalendar::_to_ical()
-					$ve = VObject\Component::create('VEVENT');
-					$ve->UID = $event['uid'];
-
-					if (!empty($event['start']))
-						$ve->add(\libvcalendar::datetime_prop('DTSTART', $event['start'], false, false));
-					if (!empty($event['end']))
-						$ve->add(\libvcalendar::datetime_prop('DTEND',   $event['end'], false, false));
-
-					if (!empty($event['free_busy']))
-						$ve->add('TRANSP', $event['free_busy'] == 'free' ? 'TRANSPARENT' : 'OPAQUE');
-
-					if ($event['free_busy'] == 'tentative')
-						$ve->add('STATUS', 'TENTATIVE');
-					else if (!empty($event['status']))
-						$ve->add('STATUS', $event['status']);
+					$ve = $this->to_vevent($event);
 
 					if ($event['recurrence']) {
 						if ($exdates = $event['recurrence']['EXDATE'])
@@ -229,6 +209,23 @@ class SourceIMAP extends Source
 						if ($event['recurrence']['FREQ'])
 							$ve->add('RRULE', \libcalendaring::to_rrule($event['recurrence']));
 
+						// consider recurrence exceptions
+						if (is_array($event['recurrence']['EXCEPTIONS'])) {
+							foreach ($event['recurrence']['EXCEPTIONS'] as $i => $exception) {
+								// register exdate for this occurrence
+								if ($exception['recurrence_date'] instanceof \DateTime) {
+									$exdates[] = $exception['recurrence_date'];
+								}
+								// add exception to vcalendar container
+								if (!$exception['cancelled'] && $this->check_participation($exception, $user_email)) {
+									$vex = $this->to_vevent($exception);
+									$vex->UID = $event['uid'] . '-' . $i;
+									$calendar->add($vex);
+									$log->debug("Adding event exception for processing:\n" . $vex->serialize());
+								}
+							}
+						}
+
 						// add EXDATEs each one per line (for Thunderbird Lightning)
 						if ($exdates) {
 							foreach ($exdates as $ex) {
@@ -333,4 +330,48 @@ class SourceIMAP extends Source
 
 		$imap->close();
 	}
+
+	/**
+	 * Helper method to build a Sabre/VObject from the gieven event data
+	 */
+	private function to_vevent($event)
+	{
+		// copied from libvcalendar::_to_ical()
+		$ve = VObject\Component::create('VEVENT');
+		$ve->UID = $event['uid'];
+
+		if (!empty($event['start']))
+			$ve->add(\libvcalendar::datetime_prop('DTSTART', $event['start'], false, false));
+		if (!empty($event['end']))
+			$ve->add(\libvcalendar::datetime_prop('DTEND',   $event['end'], false, false));
+
+		if (!empty($event['free_busy']))
+			$ve->add('TRANSP', $event['free_busy'] == 'free' ? 'TRANSPARENT' : 'OPAQUE');
+
+		if ($event['free_busy'] == 'tentative')
+			$ve->add('STATUS', 'TENTATIVE');
+		else if (!empty($event['status']))
+			$ve->add('STATUS', $event['status']);
+
+		return $ve;
+	}
+
+	/**
+	 * Helper method to check the participation status of the requested user
+	 */
+	private function check_participation($event, $user_email)
+	{
+		$result = true;
+
+		if (is_array($event['attendees'])) {
+			foreach ($event['attendees'] as $attendee) {
+				if (in_array($attendee['email'], $user_email) && $attendee['status'] == 'DECLINED') {
+					$result = false;
+					break;
+				}
+			}
+		}
+
+		return $result;
+	}
 }
-- 
2.1.0