WIP for #561

Author: oharsta

server/src/main/java/invite/cron/RoleExpirationNotifier.java

@@ -57,6 +57,8 @@ public List<String> doSweep() {
         return userRoles.stream().map(userRole -> {
             List<GroupedProviders> groupedProviders = manage.getGroupedProviders(List.of(userRole.getRole()));
             GroupedProviders groupedProvider = groupedProviders.isEmpty() ? null : groupedProviders.get(0);
+            Instant endDate = userRole.getEndDate();
+            long daysBetween = ChronoUnit.DAYS.between(endDate, instant);
             String mail = mailBox.sendUserRoleExpirationNotificationMail(userRole, groupedProvider, roleExpirationNotificationDays);
             //https://stackoverflow.com/a/75121707
             userRoleRepository.updateExpiryNotifications(1, userRole.getId());

server/src/test/java/invite/cron/RoleExpirationNotifierTest.java

@@ -32,7 +32,7 @@ void sweep() {
 
         MimeMessageParser messageParser = super.mailMessage();
         String htmlContent = messageParser.getHtmlContent();
-        //Due to html formatting we can't be sure of the line breaks
+        //Due to HTML formatting, we can't be sure of the line breaks
         Stream.of("Your Inviter role Mail at the application Calendar EN will expire in 5 days".split(" "))
                 .forEach(s -> assertTrue(htmlContent.contains(s)));