Add relative_time() helper for human-readable timestamps

src/ui/widgets.rs

@@ -338,6 +338,51 @@ fn crash_explanation(stderr: &str) -> String {
      may help identify the cause.".to_string()
 }
 
+/// Format a timestamp string as a human-readable relative time.
+/// Accepts RFC3339, "YYYY-MM-DD HH:MM:SS", or ISO8601 formats.
+pub fn relative_time(timestamp: &str) -> String {
+    let parsed = chrono::DateTime::parse_from_rfc3339(timestamp)
+        .map(|dt| dt.with_timezone(&chrono::Utc))
+        .or_else(|_| {
+            chrono::NaiveDateTime::parse_from_str(timestamp, "%Y-%m-%d %H:%M:%S")
+                .map(|ndt| ndt.and_utc())
+        });
+
+    let dt = match parsed {
+        Ok(dt) => dt,
+        Err(_) => return timestamp.to_string(),
+    };
+
+    let now = chrono::Utc::now();
+    let duration = now.signed_duration_since(dt);
+
+    if duration.num_seconds() < 0 {
+        return "Just now".to_string();
+    }
+
+    if duration.num_seconds() < 60 {
+        "Just now".to_string()
+    } else if duration.num_minutes() < 60 {
+        let m = duration.num_minutes();
+        format!("{} min ago", m)
+    } else if duration.num_hours() < 24 {
+        let h = duration.num_hours();
+        format!("{} hr ago", h)
+    } else if duration.num_days() == 1 {
+        "Yesterday".to_string()
+    } else if duration.num_days() < 7 {
+        format!("{} days ago", duration.num_days())
+    } else if duration.num_weeks() == 1 {
+        "Last week".to_string()
+    } else if duration.num_days() < 30 {
+        format!("{} weeks ago", duration.num_weeks())
+    } else if duration.num_days() < 60 {
+        "Last month".to_string()
+    } else {
+        format!("{} months ago", duration.num_days() / 30)
+    }
+}
+
 /// Create a screen-reader live region announcement.
 /// Inserts a hidden label with AccessibleRole::Alert into the given container,
 /// which causes AT-SPI to announce the text to screen readers.