import { createLocal } from '../create/local';
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import { cloneWithOffset } from '../units/offset';
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import isFunction from '../utils/is-function';
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import { hooks } from '../utils/hooks';
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import { isMomentInput } from '../utils/is-moment-input';
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import isCalendarSpec from '../utils/is-calendar-spec';
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export function getCalendarFormat(myMoment, now) {
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var diff = myMoment.diff(now, 'days', true);
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return diff < -6
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? 'sameElse'
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: diff < -1
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? 'lastWeek'
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: diff < 0
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? 'lastDay'
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: diff < 1
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? 'sameDay'
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: diff < 2
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? 'nextDay'
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: diff < 7
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? 'nextWeek'
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: 'sameElse';
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}
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export function calendar(time, formats) {
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// Support for single parameter, formats only overload to the calendar function
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if (arguments.length === 1) {
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if (!arguments[0]) {
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time = undefined;
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formats = undefined;
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} else if (isMomentInput(arguments[0])) {
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time = arguments[0];
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formats = undefined;
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} else if (isCalendarSpec(arguments[0])) {
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formats = arguments[0];
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time = undefined;
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}
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}
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// We want to compare the start of today, vs this.
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// Getting start-of-today depends on whether we're local/utc/offset or not.
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var now = time || createLocal(),
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sod = cloneWithOffset(now, this).startOf('day'),
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format = hooks.calendarFormat(this, sod) || 'sameElse',
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output =
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formats &&
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(isFunction(formats[format])
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? formats[format].call(this, now)
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: formats[format]);
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return this.format(
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output || this.localeData().calendar(format, this, createLocal(now))
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);
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}
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