WIP denm: Show warning symbol

TODO: Show distance to DENM?

src/applogic/denm.rs

@@ -1,13 +1,14 @@
 //! C-ITS DENM Evaluation
 
+use c_its_parser::standards::cdd_2_2_1::etsi_its_cdd;
 use c_its_parser::standards::denm_2_2_1::denm_pdu_description;
 use log::info;
 
-pub fn handle_denm(etsi: &denm_pdu_description::DENM) {
+pub fn handle_denm(etsi: &denm_pdu_description::DENM) -> Option<etsi_its_cdd::CauseCodeChoice> {
     let mgmt = &etsi.denm.management;
 
     if mgmt.termination.is_some() {
-        return;
+        return None;
     }
 
     if let (Some(sit), Some(loc)) = (&etsi.denm.situation, &etsi.denm.location) {
@@ -38,7 +39,11 @@ pub fn handle_denm(etsi: &denm_pdu_description::DENM) {
                 "DENN: {station_id}/{seq_num} CC {cc}/{scc} at {lat_deg:.3}°N, {lon_deg:.3}°E until {end_time:?}"
             );
         }
+
+        Some(sit.event_type.cc_and_scc.clone())
     } else {
         info!("DENM: One of situation or location container not available");
+
+        None
     }
 }