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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
var EXPORTED_SYMBOLS = ["PluralStringFormatter", "makeFriendlyDateAgo"];
var { PluralForm } = ChromeUtils.importESModule(
"resource://gre/modules/PluralForm.sys.mjs"
);
function PluralStringFormatter(aBundleURI) {
this._bundle = Services.strings.createBundle(aBundleURI);
}
PluralStringFormatter.prototype = {
get(aStringName, aReplacements, aPluralCount) {
let str = this._bundle.GetStringFromName(aStringName);
if (aPluralCount !== undefined) {
str = PluralForm.get(aPluralCount, str);
}
if (aReplacements !== undefined) {
for (let i = 0; i < aReplacements.length; i++) {
str = str.replace("#" + (i + 1), aReplacements[i]);
}
}
return str;
},
};
var gTemplateUtilsStrings = new PluralStringFormatter(
"chrome://messenger/locale/templateUtils.properties"
);
const _dateFormatter = new Services.intl.DateTimeFormat(undefined, {
dateStyle: "short",
});
const _dayMonthFormatter = new Services.intl.DateTimeFormat(undefined, {
month: "long",
day: "numeric",
});
const _timeFormatter = new Services.intl.DateTimeFormat(undefined, {
timeStyle: "short",
});
const _weekdayFormatter = new Services.intl.DateTimeFormat(undefined, {
weekday: "long",
});
/**
* Helper function to generate a localized "friendly" representation of
* time relative to the present. If the time input is "today", it returns
* a string corresponding to just the time. If it's yesterday, it returns
* "yesterday" (localized). If it's in the last week, it returns the day
* of the week. If it's before that, it returns the date.
*
* @param {Date} time - The time (better be in the past!)
* @returns {string} A "human-friendly" representation of that time
* relative to now.
*/
function makeFriendlyDateAgo(time) {
// TODO: use Intl.RelativeTimeFormat instead.
// Figure out when today begins
let now = new Date();
let today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
// Get the end time to display
let end = time;
// Figure out if the end time is from today, yesterday,
// this week, etc.
let dateTime;
let kDayInMsecs = 24 * 60 * 60 * 1000;
let k6DaysInMsecs = 6 * kDayInMsecs;
if (end >= today) {
// activity finished after today started, show the time
dateTime = _timeFormatter.format(end);
} else if (today - end < kDayInMsecs) {
// activity finished after yesterday started, show yesterday
dateTime = gTemplateUtilsStrings.get("yesterday");
} else if (today - end < k6DaysInMsecs) {
// activity finished after last week started, show day of week
dateTime = _weekdayFormatter.format(end);
} else if (now.getFullYear() == end.getFullYear()) {
// activity must have been from some time ago.. show month/day
dateTime = _dayMonthFormatter.format(end);
} else {
// not this year, so show full date format
dateTime = _dateFormatter.format(end);
}
return dateTime;
}
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