From cd269b3540fb5e3a988c1b59d3763db360b1fb34 Mon Sep 17 00:00:00 2001
From: Joe Carstairs <me@joeac.net>
Date: Tue, 17 Sep 2024 13:20:04 +0100
Subject: many, many changes

---
 backend/src/models/date_time_utc.rs | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'backend/src/models/date_time_utc.rs')

diff --git a/backend/src/models/date_time_utc.rs b/backend/src/models/date_time_utc.rs
index 6c5dc33..03d5802 100644
--- a/backend/src/models/date_time_utc.rs
+++ b/backend/src/models/date_time_utc.rs
@@ -32,6 +32,14 @@ impl DateTimeUtc {
             .abs_diff(other.0.num_days_from_ce())
     }
 
+    pub fn to_day_str(&self) -> String {
+        self.0
+            .to_rfc3339()
+            .split_at_checked(10)
+            .map(|(day_str, _)| String::from(day_str))
+            .unwrap_or_else(|| String::from(""))
+    }
+
     pub fn new(date_time_utc: DateTime<Utc>) -> Self {
         Self(date_time_utc)
     }
@@ -46,7 +54,7 @@ impl ToSql<Text, Sqlite> for DateTimeUtc {
         &'b self,
         out: &mut diesel::serialize::Output<'b, '_, Sqlite>,
     ) -> serialize::Result {
-        out.set_value(self.0.to_rfc3339());
+        out.set_value(self.to_day_str());
         Ok(diesel::serialize::IsNull::No)
     }
 }
@@ -108,4 +116,16 @@ mod test {
         assert_eq!(day_diff, 1);
         assert_eq!(day_diff, neg_day_diff);
     }
+
+    #[test]
+    fn given_23_nov_1970_when_to_day_str_then_return_iso_day_str() {
+        let date_time_utc = DateTimeUtc::new(
+            Utc.with_ymd_and_hms(1970, 11, 23, 0, 0, 0)
+                .unwrap()
+                .to_utc(),
+        );
+        let day_str = date_time_utc.to_day_str();
+
+        assert_eq!(day_str, "1970-11-23");
+    }
 }
-- 
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