Add timestamps to bar

src/web.rs

@@ -14,6 +14,16 @@ use sqlx::{Pool, Sqlite};
 
 use crate::{client::CheckState, db::Check};
 
+trait RenderDate {
+    fn render_nicely(&self) -> String;
+}
+
+impl RenderDate for chrono::DateTime<Utc> {
+    fn render_nicely(&self) -> String {
+        self.to_rfc3339_opts(chrono::SecondsFormat::Millis, /*use_z*/ true)
+    }
+}
+
 pub async fn axum_server(db: Arc<Pool<Sqlite>>) -> Result<()> {
     let app = Router::new().route("/", get(root)).with_state(db);
 
@@ -66,7 +76,7 @@ fn compute_status(checks: Vec<Check>) -> Vec<WebsiteStatus> {
             let mut count_ok = 0;
 
             const BAR_ELEMS: usize = 100;
-            let bar_classes = checks_to_classes(&checks, BAR_ELEMS);
+            let bar_info = checks_to_classes(&checks, BAR_ELEMS);
 
             let len = checks.len();
             checks.into_iter().for_each(|(time, result)| {
@@ -79,20 +89,20 @@ fn compute_status(checks: Vec<Check>) -> Vec<WebsiteStatus> {
             let ok_ratio = (count_ok as f32) / (len as f32);
             let ok_ratio = format!("{:.2}%", ok_ratio * 100.0);
 
-            let last_ok = last_ok
-                .map(|utc| utc.to_rfc3339_opts(chrono::SecondsFormat::Millis, /*use_z*/ true));
+            let last_ok = last_ok.map(|utc| utc.render_nicely());
             WebsiteStatus {
                 website,
                 last_ok,
                 ok_ratio,
                 count_ok,
                 total_requests: len,
-                bar_classes,
+                bar_info,
             }
         })
         .collect()
 }
 
+#[derive(Debug)]
 enum BarClass {
     Green,
     Orange,
@@ -111,28 +121,39 @@ impl BarClass {
     }
 }
 
+#[derive(Debug)]
+struct BarInfo {
+    elems: Vec<BarClass>,
+    first_time: Option<DateTime<Utc>>,
+    last_time: Option<DateTime<Utc>>,
+}
+
 /// Converts a list of (sorted by time) checks at arbitrary dates into a list of boxes for the
 /// frontend, in a fixed sensical timeline.
 /// We slice the time from the first check to the last check (maybe something like last check-30d
 /// in the future) into slices and aggregate all checks from these times into these slices.
-fn checks_to_classes(checks: &[(DateTime<Utc>, CheckState)], classes: usize) -> Vec<BarClass> {
+fn checks_to_classes(checks: &[(DateTime<Utc>, CheckState)], classes: usize) -> BarInfo {
     assert_ne!(classes, 0);
     let Some(first) = checks.first() else {
-        return vec![];
+        return BarInfo {
+            elems: Vec::new(),
+            first_time: None,
+            last_time: None,
+        };
     };
     let last = checks.last().unwrap();
 
     let mut bins = vec![vec![]; classes];
 
-    let first = first.0.timestamp_millis();
-    let last = last.0.timestamp_millis();
+    let first_m = first.0.timestamp_millis();
+    let last_m = last.0.timestamp_millis();
 
-    let last_rel = last - first;
-    assert!(last.is_positive(), "checks not ordered correctly");
+    let last_rel = last_m - first_m;
+    assert!(last_m.is_positive(), "checks not ordered correctly");
 
     for check in checks {
-        let time_rel = check.0.timestamp_millis() - first;
-        assert!(first.is_positive(), "checks not ordered correctly");
+        let time_rel = check.0.timestamp_millis() - first_m;
+        assert!(first_m.is_positive(), "checks not ordered correctly");
 
         /*
         5 bins:
@@ -147,7 +168,8 @@ fn checks_to_classes(checks: &[(DateTime<Utc>, CheckState)], classes: usize) ->
         bins[bin].push(check);
     }
 
-    bins.iter()
+    let elems = bins
+        .iter()
         .map(|checks| {
             let ok = checks
                 .iter()
@@ -167,16 +189,23 @@ fn checks_to_classes(checks: &[(DateTime<Utc>, CheckState)], classes: usize) ->
                 unreachable!("i dont think logic works like this")
             }
         })
-        .collect()
+        .collect();
+
+    BarInfo {
+        elems,
+        first_time: Some(first.0),
+        last_time: Some(last.0),
+    }
 }
 
+#[derive(Debug)]
 struct WebsiteStatus {
     website: String,
     last_ok: Option<String>,
     ok_ratio: String,
     total_requests: usize,
     count_ok: usize,
-    bar_classes: Vec<BarClass>,
+    bar_info: BarInfo,
 }
 
 #[derive(Template)]