public SickLeaveAccountingEmailNotificationActor(
            IEmailWithFixedRecipientNotification createdEmailNotificationConfig,
            IEmailWithFixedRecipientNotification prolongedEmailNotificationConfig,
            IEmailWithFixedRecipientNotification cancelledEmailNotificationConfig,
            IActorRef organizationActor)
        {
            this.createdEmailNotificationConfig   = createdEmailNotificationConfig;
            this.prolongedEmailNotificationConfig = prolongedEmailNotificationConfig;
            this.cancelledEmailNotificationConfig = cancelledEmailNotificationConfig;
            this.organizationActor = organizationActor;

            Context.System.EventStream.Subscribe <CalendarEventCreated>(this.Self);
            Context.System.EventStream.Subscribe <CalendarEventChanged>(this.Self);
        }
        private void SendNotification(CalendarEventChangedWithAdditionalData message, IEmailWithFixedRecipientNotification notificationConfiguration)
        {
            var templateExpressionContext = new Dictionary <string, string>
            {
                ["employee"]   = message.Employee.Name,
                ["employeeId"] = message.Employee.EmployeeId,
                ["startDate"]  = message.Event.Dates.StartDate.ToString("dd/MM/yyyy"),
                ["endDate"]    = message.Event.Dates.EndDate.ToString("dd/MM/yyyy")
            };

            templateExpressionContext = new DictionaryMerge().Perform(
                templateExpressionContext,
                message.Event.AdditionalData.ToDictionary(x => x.Key, x => x.Value));

            var templateExpressionParser = new TemplateExpressionParser();

            var sender    = notificationConfiguration.NotificationSender;
            var recipient = notificationConfiguration.NotificationRecipient;
            var subject   = templateExpressionParser.Parse(notificationConfiguration.Subject, templateExpressionContext);
            var body      = templateExpressionParser.Parse(notificationConfiguration.Body, templateExpressionContext);

            Context.System.EventStream.Publish(
                new NotificationEventBusMessage(
                    new EmailNotification(sender, new[] { recipient }, subject, body)));
        }