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mostr/src/helpers.rs

102 lines
3.3 KiB
Rust

use std::fmt::Display;
use std::io::{stdin, stdout, Write};
use chrono::{DateTime, Local, NaiveDateTime, TimeZone, Utc};
use chrono::LocalResult::Single;
use log::{debug, error, info, trace, warn};
use nostr_sdk::Timestamp;
pub fn some_non_empty(str: &str) -> Option<String> {
if str.is_empty() { None } else { Some(str.to_string()) }
}
// TODO as macro so that log comes from appropriate module
pub fn or_print<T, U: Display>(result: Result<T, U>) -> Option<T> {
match result {
Ok(value) => Some(value),
Err(error) => {
warn!("{}", error);
None
}
}
}
pub fn prompt(prompt: &str) -> Option<String> {
print!("{} ", prompt);
stdout().flush().unwrap();
match stdin().lines().next() {
Some(Ok(line)) => Some(line),
_ => None,
}
}
pub fn parse_date(str: &str) -> Option<DateTime<Utc>> {
// Using two libraries for better exhaustiveness, see https://github.com/uutils/parse_datetime/issues/84
match interim::parse_date_string(str, Local::now(), interim::Dialect::Us) {
Ok(date) => Some(date.to_utc()),
Err(e) => {
match parse_datetime::parse_datetime_at_date(Local::now(), str) {
Ok(date) => Some(date.to_utc()),
Err(_) => {
warn!("Could not parse date from {str}: {e}");
None
}
}
}
}
}
pub fn parse_tracking_stamp(str: &str) -> Option<Timestamp> {
let stripped = str.trim().trim_start_matches('+').trim_start_matches("in ");
if let Ok(num) = stripped.parse::<i64>() {
return Some(Timestamp::from(Timestamp::now().as_u64().saturating_add_signed(num * 60)));
}
parse_date(str).and_then(|time| {
if time.timestamp() > 0 {
Some(Timestamp::from(time.timestamp() as u64))
} else {
warn!("Can only track times after 1970!");
None
}
})
}
// For use in format strings but not possible, so need global find-replace
pub const MAX_TIMESTAMP_WIDTH: u8 = 15;
/// Format nostr Timestamp relative to local time
/// with optional day specifier or full date depending on distance to today
pub fn relative_datetimestamp(stamp: &Timestamp) -> String {
match Local.timestamp_opt(stamp.as_u64() as i64, 0) {
Single(time) => {
let date = time.date_naive();
let prefix = match Local::now()
.date_naive()
.signed_duration_since(date)
.num_days()
{
-1 => "tomorrow ".into(),
0 => "".into(),
1 => "yesterday ".into(),
2..=6 => date.format("last %a ").to_string(),
_ => date.format("%y-%m-%d ").to_string(),
};
format!("{}{}", prefix, time.format("%H:%M"))
}
_ => stamp.to_human_datetime(),
}
}
/// Format a nostr timestamp in a sensible comprehensive format
pub fn local_datetimestamp(stamp: &Timestamp) -> String {
format_stamp(stamp, "%y-%m-%d %a %H:%M")
}
/// Format a nostr timestamp with the given format
pub fn format_stamp(stamp: &Timestamp, format: &str) -> String {
match Local.timestamp_opt(stamp.as_u64() as i64, 0) {
Single(time) => time.format(format).to_string(),
_ => stamp.to_human_datetime(),
}
}