timeperiodjs/dist/period/PeriodTimeChanger.js

Time Period Library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Constants_1 = require("../Constants");
class PeriodTimeChanger {
    constructor(start, end) {
        // NOTE: Dates have to be bonded to its source. Do not lose this bonding by using 'new Date()'
        this._start = start;
        this._end = end;
    }
    extendPeriod(value, type = Constants_1.TimeType.MILLISECONDS, changeStartTime) {
        const timeType = changeStartTime ? '_start' : '_end';
        const multiplier = PeriodTimeChanger.getMsMultiplier(type, changeStartTime);
        const ms = value * multiplier;
        this[timeType].setMilliseconds(this[timeType].getMilliseconds() + ms);
    }
    shortenPeriod(value, type = Constants_1.TimeType.MILLISECONDS, changeStartTime) {
        const timeType = changeStartTime ? '_start' : '_end';
        const multiplier = PeriodTimeChanger.getMsMultiplier(type, changeStartTime);
        const ms = value * multiplier;
        this[timeType].setMilliseconds(this[timeType].getMilliseconds() - ms);
    }
    static getMsMultiplier(type = Constants_1.TimeType.MILLISECONDS, changeStartTime) {
        let multiplier = 1;
        let foundType = false;
        // seconds
        if (!foundType && type !== Constants_1.TimeType.MILLISECONDS)
            multiplier *= 1000;
        else
            foundType = true;
        // minutes
        if (!foundType && type !== Constants_1.TimeType.SECONDS)
            multiplier *= 60;
        else
            foundType = true;
        // hours
        if (!foundType && type !== Constants_1.TimeType.MINUTES)
            multiplier *= 60;
        else
            foundType = true;
        // days
        if (!foundType && type !== Constants_1.TimeType.HOURS)
            multiplier *= 24; // then it has to be days
        else
            foundType = true;
        if (changeStartTime)
            multiplier *= -1;
        return multiplier;
    }
}
exports.default = PeriodTimeChanger;