openmct/example/generator/src/SinewaveDeltaFormat.js

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 * as represented by the Administrator of the National Aeronautics and Space
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/*global define,Promise*/

define(
    ['./SinewaveConstants', 'moment'],
    function (SinewaveConstants, moment) {
        "use strict";

        var START_TIME = SinewaveConstants.START_TIME,
            NUMBER_REGEX = /^\d+$/,
            SECOND = 1000,
            MINUTE = SECOND * 60,
            HOUR = MINUTE * 60;

        function SinewaveDeltaFormat() {
        }

        function twoDigit(v) {
            return v >= 10 ? String(v) : ('0' + v);
        }

        SinewaveDeltaFormat.prototype.format = function (value) {
            var delta = value - START_TIME,
                seconds = Math.floor(delta / SECOND) % 60,
                minutes = Math.floor(delta / MINUTE) % 60,
                hours = Math.floor(delta / HOUR);
            return [ hours, minutes, seconds ].map(twoDigit).join(":");
        };

        SinewaveDeltaFormat.prototype.validate = function (text) {
            var parts = text.split(":");
            return parts.length === 3 && parts.every(function (part) {
                return NUMBER_REGEX.test(part);
            });
        };

        SinewaveDeltaFormat.prototype.parse = function (text) {
            var parts = text.split(":");
            return [ HOUR, MINUTE, SECOND ].map(function (sz, i) {
                return parseInt(parts[i], 10) * sz;
            }).reduce(function (a, b) {
                return a + b;
            }, 0);
        };

        return SinewaveDeltaFormat;
    }
);