81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
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#!/usr/bin/env nodejsscript
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/* jshint esversion: 11,-W097, -W040, module: true, node: true, expr: true, undef: true *//* global echo, $, pipe, s, fetch, cyclicLoop */
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const units= {
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second: 1000,
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get minute(){ return this.second*60; },
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get hour(){ return this.minute*60; },
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get day(){ return this.hour*24; },
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get month(){ return this.day*30; },
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get year(){ return this.day*365; }
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};
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$.api()
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.version("2024-03-27")
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.command("diff <time>", [
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"Returns remaining time diff <time>.",
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"The <time> is argument to bash `date -d <time> +%s`."
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])
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.alias("?")
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.option("--unit", "Unit, use one of the: "+Object.keys(units).join(", "))
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.action(diff)
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.command("zone [time]", "Returns times in different time zones.")
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.option("-z", "Use multiple times to see time in different time zones.")
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.action(zone)
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.parse();
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function diff(given, { unit }){
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const date_now= new Date();
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const date_given= new Date(s.$().run`date -d ${given} +%Y-%m-%dT%H:%M:%S%z`.trim());
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if(date_given.toLocaleString() === "Invalid Date")
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return $.exit(1, echo(date_given));
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const rtf= new Intl.RelativeTimeFormat();
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let future= 1;
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let diff= date_given - date_now;
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if(diff < 0){
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future= -1;
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diff= -diff;
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}
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if(unit){
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if(unit.endsWith("s")) unit= unit.slice(0, -1);
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echo(rtf.format(future*Math.floor(diff/units[unit]), unit));
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$.exit(0);
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}
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diff= echoUnit(future, diff, "year", rtf);
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diff= echoUnit(future, diff, "month", rtf);
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diff= echoUnit(future, diff, "day", rtf);
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diff= echoUnit(future, diff, "hour", rtf);
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diff= echoUnit(future, diff, "minute", rtf);
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diff= echoUnit(future, diff, "second", rtf);
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$.exit(0);
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}
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function zone(time, { z: zones }){
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if(!Array.isArray(zones)) zones= zones ? [ zones ] : [];
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if(!zones.length)
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return $.error("Please specify at least one zone.");
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const date_given= time ? new Date(s.$().run`date -d ${time} +%Y-%m-%dT%H:%M:%S%z`.trim()) : new Date();
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if(date_given.toLocaleString() === "Invalid Date")
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return $.error(date_given);
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const max_length= Math.max(...zones.map(zone=> zone.length));
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const dtf= timeZone=> new Intl.DateTimeFormat(undefined, { timeZone, dateStyle: "full", timeStyle: "long", hour12: false });
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for(const zone of zones)
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echo(zone.padStart(max_length, " "), "—", dtf(zone).format(date_given));
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$.exit(0);
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}
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/**
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* @param {1|-1} future
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* @param {number} num
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* @param {'year'|'month'|'day'|'hour'|'minute'|'second'} unit
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* @param {string} rtf
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* */
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function echoUnit(future, num, unit, rtf){
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if(num <= units[unit]) return num;
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echo(rtf.format(future*Math.floor(num/units[unit]), unit));
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return num%units[unit];
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}
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