systemprompt_models/
time_format.rs

1//! Human-readable timestamp and duration formatting.
2//!
3//! Display helpers for rendering [`DateTime<Utc>`] values, date ranges,
4//! period labels, and millisecond durations in dashboards and logs.
5
6use chrono::{DateTime, Utc};
7
8pub fn format_timestamp(dt: DateTime<Utc>) -> String {
9    dt.format("%Y-%m-%d %H:%M:%S").to_string()
10}
11
12pub fn format_date(dt: DateTime<Utc>) -> String {
13    dt.format("%Y-%m-%d").to_string()
14}
15
16pub fn format_date_range(start: DateTime<Utc>, end: DateTime<Utc>) -> String {
17    format!("{} to {}", format_date(start), format_date(end))
18}
19
20pub fn format_duration_ms(ms: i64) -> String {
21    match ms {
22        ms if ms < 1000 => format!("{}ms", ms),
23        ms if ms < 60_000 => format!("{:.1}s", ms as f64 / 1000.0),
24        ms if ms < 3_600_000 => format!("{:.1}m", ms as f64 / 60_000.0),
25        _ => format!("{:.1}h", ms as f64 / 3_600_000.0),
26    }
27}
28
29pub fn format_optional_duration_ms(ms: Option<i64>) -> String {
30    ms.map_or_else(String::new, |d| format!(" ({}ms)", d))
31}
32
33pub fn format_period_label(dt: DateTime<Utc>, period: &str) -> String {
34    match period {
35        "hour" => dt.format("%Y-%m-%d %H:00").to_string(),
36        "day" => format_date(dt),
37        "week" => format!("Week of {}", format_date(dt)),
38        "month" => dt.format("%Y-%m").to_string(),
39        _ => format_timestamp(dt),
40    }
41}
systemprompt_models/time_format.rs

systemprompt_models/
time_format.rs
