import absFloor from '../utils/abs-floor';
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import absCeil from '../utils/abs-ceil';
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import { createUTCDate } from '../create/date-from-array';
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export function bubble () {
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var milliseconds = this._milliseconds;
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var days = this._days;
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var months = this._months;
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var data = this._data;
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var seconds, minutes, hours, years, monthsFromDays;
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// if we have a mix of positive and negative values, bubble down first
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// check: https://github.com/moment/moment/issues/2166
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if (!((milliseconds >= 0 && days >= 0 && months >= 0) ||
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(milliseconds <= 0 && days <= 0 && months <= 0))) {
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milliseconds += absCeil(monthsToDays(months) + days) * 864e5;
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days = 0;
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months = 0;
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}
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// The following code bubbles up values, see the tests for
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// examples of what that means.
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data.milliseconds = milliseconds % 1000;
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seconds = absFloor(milliseconds / 1000);
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data.seconds = seconds % 60;
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minutes = absFloor(seconds / 60);
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data.minutes = minutes % 60;
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hours = absFloor(minutes / 60);
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data.hours = hours % 24;
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days += absFloor(hours / 24);
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// convert days to months
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monthsFromDays = absFloor(daysToMonths(days));
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months += monthsFromDays;
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days -= absCeil(monthsToDays(monthsFromDays));
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// 12 months -> 1 year
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years = absFloor(months / 12);
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months %= 12;
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data.days = days;
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data.months = months;
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data.years = years;
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return this;
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}
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export function daysToMonths (days) {
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// 400 years have 146097 days (taking into account leap year rules)
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// 400 years have 12 months === 4800
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return days * 4800 / 146097;
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}
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export function monthsToDays (months) {
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// the reverse of daysToMonths
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return months * 146097 / 4800;
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}
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