/**
 * @license Highstock JS v7.2.0 (2019-09-03)
 *
 * Indicator series type for Highstock
 *
 * (c) 2010-2019 Kacper Madej
 *
 * License: www.highcharts.com/license
 */
'use strict';
(function (factory) {
    if (typeof module === 'object' && module.exports) {
        factory['default'] = factory;
        module.exports = factory;
    } else if (typeof define === 'function' && define.amd) {
        define('highcharts/indicators/roc', ['highcharts', 'highcharts/modules/stock'], function (Highcharts) {
            factory(Highcharts);
            factory.Highcharts = Highcharts;
            return factory;
        });
    } else {
        factory(typeof Highcharts !== 'undefined' ? Highcharts : undefined);
    }
}(function (Highcharts) {
    var _modules = Highcharts ? Highcharts._modules : {};
    function _registerModule(obj, path, args, fn) {
        if (!obj.hasOwnProperty(path)) {
            obj[path] = fn.apply(null, args);
        }
    }
    _registerModule(_modules, 'indicators/roc.src.js', [_modules['parts/Globals.js'], _modules['parts/Utilities.js']], function (H, U) {
        /* *
         *
         *  (c) 2010-2019 Kacper Madej
         *
         *  License: www.highcharts.com/license
         *
         * */



        var isArray = U.isArray;

        var seriesType = H.seriesType;

        // Utils:
        function populateAverage(xVal, yVal, i, period, index) {
            /* Calculated as:

               (Closing Price [today] - Closing Price [n days ago]) /
                Closing Price [n days ago] * 100

               Return y as null when avoiding division by zero */
            var nDaysAgoY,
                rocY;

            if (index < 0) {
                // y data given as an array of values
                nDaysAgoY = yVal[i - period];
                rocY = nDaysAgoY ?
                    (yVal[i] - nDaysAgoY) / nDaysAgoY * 100 :
                    null;
            } else {
                // y data given as an array of arrays and the index should be used
                nDaysAgoY = yVal[i - period][index];
                rocY = nDaysAgoY ?
                    (yVal[i][index] - nDaysAgoY) / nDaysAgoY * 100 :
                    null;
            }

            return [xVal[i], rocY];
        }

        /**
         * The ROC series type.
         *
         * @private
         * @class
         * @name Highcharts.seriesTypes.roc
         *
         * @augments Highcharts.Series
         */
        seriesType(
            'roc',
            'sma',
            /**
             * Rate of change indicator (ROC). The indicator value for each point
             * is defined as:
             *
             * `(C - Cn) / Cn * 100`
             *
             * where: `C` is the close value of the point of the same x in the
             * linked series and `Cn` is the close value of the point `n` periods
             * ago. `n` is set through [period](#plotOptions.roc.params.period).
             *
             * This series requires `linkedTo` option to be set.
             *
             * @sample stock/indicators/roc
             *         Rate of change indicator
             *
             * @extends      plotOptions.sma
             * @since        6.0.0
             * @product      highstock
             * @optionparent plotOptions.roc
             */
            {
                params: {
                    index: 3,
                    period: 9
                }
            },
            /**
             * @lends Highcharts.Series#
             */
            {
                nameBase: 'Rate of Change',
                getValues: function (series, params) {
                    var period = params.period,
                        xVal = series.xData,
                        yVal = series.yData,
                        yValLen = yVal ? yVal.length : 0,
                        ROC = [],
                        xData = [],
                        yData = [],
                        i,
                        index = -1,
                        ROCPoint;

                    // Period is used as a number of time periods ago, so we need more
                    // (at least 1 more) data than the period value
                    if (xVal.length <= period) {
                        return false;
                    }

                    // Switch index for OHLC / Candlestick / Arearange
                    if (isArray(yVal[0])) {
                        index = params.index;
                    }

                    // i = period <-- skip first N-points
                    // Calculate value one-by-one for each period in visible data
                    for (i = period; i < yValLen; i++) {
                        ROCPoint = populateAverage(xVal, yVal, i, period, index);
                        ROC.push(ROCPoint);
                        xData.push(ROCPoint[0]);
                        yData.push(ROCPoint[1]);
                    }

                    return {
                        values: ROC,
                        xData: xData,
                        yData: yData
                    };
                }
            }
        );

        /**
         * A `ROC` series. If the [type](#series.wma.type) option is not
         * specified, it is inherited from [chart.type](#chart.type).
         *
         * Rate of change indicator (ROC). The indicator value for each point
         * is defined as:
         *
         * `(C - Cn) / Cn * 100`
         *
         * where: `C` is the close value of the point of the same x in the
         * linked series and `Cn` is the close value of the point `n` periods
         * ago. `n` is set through [period](#series.roc.params.period).
         *
         * This series requires `linkedTo` option to be set.
         *
         * @extends   series,plotOptions.roc
         * @since     6.0.0
         * @product   highstock
         * @excluding dataParser, dataURL
         * @apioption series.roc
         */

    });
    _registerModule(_modules, 'masters/indicators/roc.src.js', [], function () {


    });
}));