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use ansi_term::Color;
use chrono::{DateTime, Local};
use super::{Context, Module};
/// Outputs the current time
pub fn module<'a>(context: &'a Context) -> Option<Module<'a>> {
let mut module = context.new_module("time");
// Remove when logic for disabled by default exists
if module.config_value_bool("disabled").unwrap_or(true) {
return None;
}
let module_style = module
.config_value_style("style")
.unwrap_or_else(|| Color::Yellow.bold());
module.set_style(module_style);
// Load module settings
let is_12hr = module.config_value_bool("12hr").unwrap_or(false);
let default_format = if is_12hr { "%r" } else { "%T" };
let time_format = module
.config_value_str("format")
.unwrap_or(default_format)
.to_owned();
log::trace!(
"Timer module is enabled with format string: {}",
time_format
);
let local: DateTime<Local> = Local::now();
let formatted_time_string = format_time(&time_format, local);
module.new_segment("time", &formatted_time_string);
module.get_prefix().set_value("at ");
Some(module)
}
/// Format a given time into the given string. This function should be referentially
/// transparent, which makes it easy to test (unlike anything involving the actual time)
fn format_time(time_format: &str, localtime: DateTime<Local>) -> String {
localtime.format(time_format).to_string()
}
/* Because we cannot make acceptance tests for the time module, these unit
tests become extra important */
#[cfg(test)]
mod tests {
use super::*;
use chrono::offset::TimeZone;
const FMT_12: &str = "%r";
const FMT_24: &str = "%T";
#[test]
fn test_midnight_12hr() {
let time = Local.ymd(2014, 7, 8).and_hms(0, 0, 0);
let formatted = format_time(FMT_12, time);
assert_eq!(formatted, "12:00:00 AM");
}
#[test]
fn test_midnight_24hr() {
let time = Local.ymd(2014, 7, 8).and_hms(0, 0, 0);
let formatted = format_time(FMT_24, time);
assert_eq!(formatted, "00:00:00");
}
#[test]
fn test_noon_12hr() {
let time = Local.ymd(2014, 7, 8).and_hms(12, 0, 0);
let formatted = format_time(FMT_12, time);
assert_eq!(formatted, "12:00:00 PM");
}
#[test]
fn test_noon_24hr() {
let time = Local.ymd(2014, 7, 8).and_hms(12, 0, 0);
let formatted = format_time(FMT_24, time);
assert_eq!(formatted, "12:00:00");
}
#[test]
fn test_arbtime_12hr() {
let time = Local.ymd(2014, 7, 8).and_hms(15, 36, 47);
let formatted = format_time(FMT_12, time);
assert_eq!(formatted, "03:36:47 PM");
}
#[test]
fn test_arbtime_24hr() {
let time = Local.ymd(2014, 7, 8).and_hms(15, 36, 47);
let formatted = format_time(FMT_24, time);
assert_eq!(formatted, "15:36:47");
}
#[test]
fn test_format_with_paren() {
let time = Local.ymd(2014, 7, 8).and_hms(15, 36, 47);
let formatted = format_time("[%T]", time);
assert_eq!(formatted, "[15:36:47]");
}
}
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