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