import toInt from '../utils/to-int'; import {Duration} from './constructor'; import {createDuration} from './create';

var ordering = ['year', 'quarter', 'month', 'week', 'day', 'hour', 'minute', 'second', 'millisecond'];

export default function isDurationValid(m) {

for (var key in m) {
    if (!(ordering.indexOf(key) !== -1 && (m[key] == null || !isNaN(m[key])))) {
        return false;
    }
}

var unitHasDecimal = false;
for (var i = 0; i < ordering.length; ++i) {
    if (m[ordering[i]]) {
        if (unitHasDecimal) {
            return false; // only allow non-integers for smallest unit
        }
        if (parseFloat(m[ordering[i]]) !== toInt(m[ordering[i]])) {
            unitHasDecimal = true;
        }
    }
}

return true;

}

export function isValid() {

return this._isValid;

}

export function createInvalid() {

return createDuration(NaN);

}