From 01d1b1070c6a45ff042ee19803dbbc5d6c358c9c Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Wed, 25 Oct 2023 15:23:09 +0200
Subject: [PATCH] Process event attendee reply status

---
 .../java/eu/faircode/email/MessageHelper.java | 30 ++++++++++++++-----
 1 file changed, 23 insertions(+), 7 deletions(-)

diff --git a/app/src/main/java/eu/faircode/email/MessageHelper.java b/app/src/main/java/eu/faircode/email/MessageHelper.java
index 1f99463d05..7205204ce1 100644
--- a/app/src/main/java/eu/faircode/email/MessageHelper.java
+++ b/app/src/main/java/eu/faircode/email/MessageHelper.java
@@ -158,8 +158,9 @@ import javax.mail.internet.ParseException;
 import biweekly.Biweekly;
 import biweekly.ICalendar;
 import biweekly.component.VEvent;
+import biweekly.parameter.ParticipationStatus;
+import biweekly.property.Attendee;
 import biweekly.property.Method;
-import biweekly.property.Status;
 import ezvcard.VCard;
 import ezvcard.VCardVersion;
 import ezvcard.io.text.VCardWriter;
@@ -4453,12 +4454,27 @@ public class MessageHelper {
                 else if (method == null || method.isRequest() || method.isReply()) {
                     int status = CalendarContract.Events.STATUS_TENTATIVE;
                     if (method != null && method.isReply()) {
-                        Status istatus = event.getStatus();
-                        if (istatus != null)
-                            if (Status.ACCEPTED.equals(istatus.getValue()))
-                                status = CalendarContract.Events.STATUS_CONFIRMED;
-                            else if (Status.CANCELLED.equals(istatus.getValue()))
-                                status = CalendarContract.Events.STATUS_CANCELED;
+                        List<Attendee> attendees = event.getAttendees();
+                        if (attendees != null && message.to != null)
+                            for (Attendee attendee : attendees) {
+                                String email = attendee.getEmail();
+                                for (Address to : message.to) {
+                                    String recipient = ((InternetAddress) to).getAddress();
+                                    if (!TextUtils.isEmpty(email) && email.equalsIgnoreCase(recipient)) {
+                                        ParticipationStatus pstatus = attendee.getParticipationStatus();
+                                        if (ParticipationStatus.ACCEPTED.equals(pstatus))
+                                            status = CalendarContract.Events.STATUS_CONFIRMED;
+                                        else if (ParticipationStatus.DECLINED.equals(pstatus))
+                                            status = CalendarContract.Events.STATUS_CANCELED;
+                                        break;
+                                    }
+                                }
+                            }
+                    }
+
+                    if (status == CalendarContract.Events.STATUS_CANCELED) {
+                        CalendarHelper.delete(context, event, message);
+                        return;
                     }
 
                     if (status == CalendarContract.Events.STATUS_TENTATIVE && !ical_tentative) {