Insert/update calendar on accept/reject

app/src/main/java/eu/faircode/email/AdapterMessage.java

@@ -3862,6 +3862,10 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                     if (message == null)
                         return null;
 
+                    EntityAccount account = db.account().getAccount(message.account);
+                    if (account == null)
+                        return null;
+
                     List<EntityAttachment> attachments = db.attachment().getAttachments(id);
                     for (EntityAttachment attachment : attachments)
                         if (attachment.available && "text/calendar".equals(attachment.getMimeType())) {
@@ -3872,6 +3876,18 @@ public class AdapterMessage extends RecyclerView.Adapter<AdapterMessage.ViewHold
                                     : icalendar.getCalendarScale());
                             VEvent event = icalendar.getEvents().get(0);
 
+                            boolean permission = Helper.hasPermission(context, Manifest.permission.WRITE_CALENDAR);
+                            if (permission || account.calendar != null) {
+                                if (action == R.id.btnCalendarAccept)
+                                    CalendarHelper.insert(context, icalendar, event,
+                                            CalendarContract.Events.STATUS_CONFIRMED, account, message);
+                                else if (action == R.id.btnCalendarDecline)
+                                    CalendarHelper.delete(context, event, message);
+                                else if (action == R.id.btnCalendarMaybe)
+                                    CalendarHelper.insert(context, icalendar, event,
+                                            CalendarContract.Events.STATUS_TENTATIVE, account, message);
+                            }
+
                             if (action == R.id.ibCalendar) {
                                 String summary = (event.getSummary() == null ? null : event.getSummary().getValue());
                                 String description = (event.getDescription() == null ? null : event.getDescription().getValue());

app/src/main/java/eu/faircode/email/CalendarHelper.java

@@ -31,6 +31,8 @@ import android.text.TextUtils;
 
 import androidx.preference.PreferenceManager;
 
+import org.json.JSONObject;
+
 import java.text.SimpleDateFormat;
 import java.util.Calendar;
 import java.util.Date;
@@ -99,6 +101,23 @@ public class CalendarHelper {
         }
     }
 
+    static Long insert(Context context, ICalendar icalendar, VEvent event, int status,
+                       EntityAccount account, EntityMessage message) {
+        String selectedAccount;
+        String selectedName;
+        try {
+            JSONObject jselected = new JSONObject(account.calendar);
+            selectedAccount = jselected.getString("account");
+            selectedName = jselected.optString("name", null);
+        } catch (Throwable ex) {
+            Log.i(ex);
+            selectedAccount = account.calendar;
+            selectedName = null;
+        }
+
+        return insert(context, icalendar, event, status, selectedAccount, selectedName, message);
+    }
+
     static Long insert(Context context, ICalendar icalendar, VEvent event, int status,
                        String selectedAccount, String selectedName, EntityMessage message) {
         Long existId = null;

app/src/main/java/eu/faircode/email/MessageHelper.java

@@ -4450,23 +4450,10 @@ public class MessageHelper {
                 // https://www.rfc-editor.org/rfc/rfc5546#section-3.2
                 if (method != null && method.isCancel())
                     CalendarHelper.delete(context, event, message);
-                else if (method == null || method.isRequest()) {
-                    String selectedAccount;
-                    String selectedName;
-                    try {
-                        JSONObject jselected = new JSONObject(account.calendar);
-                        selectedAccount = jselected.getString("account");
-                        selectedName = jselected.optString("name", null);
-                    } catch (Throwable ex) {
-                        Log.i(ex);
-                        selectedAccount = account.calendar;
-                        selectedName = null;
-                    }
-
+                else if (method == null || method.isRequest())
                     CalendarHelper.insert(context, icalendar, event,
-                            CalendarContract.Events.STATUS_TENTATIVE,
-                            selectedAccount, selectedName, message);
-                } else
+                            CalendarContract.Events.STATUS_TENTATIVE, account, message);
+                else
                     EntityLog.log(context, "Unknown event method=" + method.getValue());
             } catch (Throwable ex) {
                 Log.w(ex);