handle unknown times at stations

(travelynx sends these as the literal epoch value, which led
to really confusing results, printing exactly the time zone offset
as arrival time)

1 files changed, 11 insertions, 3 deletions

diff --git a/src/traits.rs b/src/traits.rs
index a24a689..091709a 100644
--- a/src/traits.rs
+++ b/src/traits.rs
@@ -1,5 +1,6 @@
 use chrono::{DateTime, Local, Utc};
 use colored::Colorize;
+use core::cmp::PartialEq;
 
 pub trait IsStation {
   fn name(&self) -> &str;
@@ -8,12 +9,19 @@ pub trait IsStation {
   fn ds100(&self) -> &str;
 
   fn to_fancy_string(&self) -> String {
+    // travelynx literally sends this entire precise date in case of an
+    // unknown time instead of, like, a null
+    let epoch = "1970-01-01T00:00:00Z".parse::<DateTime<Local>>().unwrap();
     format!(
       "{} {} – {} ({})",
       self
-        .real_arrival() // chrono's API for timezones is expressive, but reads like c++ …
-        .map(|t| <DateTime<Local>>::from(*t).time().to_string())
-        .unwrap_or("??:??:??".to_string())
+        .real_arrival()
+        .map(|t| if t.eq(&epoch) {
+          "unknown ".to_owned()
+        } else { // chrono's API for timezones is expressive, but reads like c++ …
+          <DateTime<Local>>::from(*t).time().format("%T").to_string()
+        })
+        .unwrap_or("<format error>".to_string())
         .blue(),
       {
         let delay = match (self.real_arrival(), self.scheduled_arrival()) {