/* *
 *  (c) 2010-2026 Highsoft AS
 *  Author: Rafal Sebestjanski
 *
 *  Disparity Index technical indicator for Highcharts Stock
 *
 *  A commercial license may be required depending on use.
 *  See www.highcharts.com/license
 *
 *
 * */
'use strict';
import SeriesRegistry from '../../../Core/Series/SeriesRegistry.js';
const { sma: SMAIndicator } = SeriesRegistry.seriesTypes;
import U from '../../../Core/Utilities.js';
const { correctFloat, defined, extend, isArray, merge } = U;
/* *
 *
 *  Class
 *
 * */
/**
 * The Disparity Index series type.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.disparityindex
 *
 * @augments Highcharts.Series
 */
class DisparityIndexIndicator extends SMAIndicator {
    /* *
     *
     *  Functions
     *
     * */
    init() {
        const args = arguments, ctx = this, // Disparity Index indicator
        params = args[1].params, // Options.params
        averageType = params && params.average ? params.average : void 0;
        ctx.averageIndicator = SeriesRegistry
            .seriesTypes[averageType] || SMAIndicator;
        ctx.averageIndicator.prototype.init.apply(ctx, args);
    }
    calculateDisparityIndex(curPrice, periodAverage) {
        return correctFloat(curPrice - periodAverage) / periodAverage * 100;
    }
    getValues(series, params) {
        const index = params.index, xVal = series.xData, yVal = series.yData, yValLen = yVal ? yVal.length : 0, disparityIndexPoint = [], xData = [], yData = [], 
        // "as any" because getValues doesn't exist on typeof Series
        averageIndicator = this.averageIndicator, isOHLC = isArray(yVal[0]), 
        // Get the average indicator's values
        values = averageIndicator.prototype.getValues(series, params), yValues = values.yData, start = xVal.indexOf(values.xData[0]);
        // Check period, if bigger than points length, skip
        if (!yValues || yValues.length === 0 ||
            !defined(index) ||
            yVal.length <= start) {
            return;
        }
        // Get the Disparity Index indicator's values
        for (let i = start; i < yValLen; i++) {
            const disparityIndexValue = this.calculateDisparityIndex(isOHLC ? yVal[i][index] : yVal[i], yValues[i - start]);
            disparityIndexPoint.push([
                xVal[i],
                disparityIndexValue
            ]);
            xData.push(xVal[i]);
            yData.push(disparityIndexValue);
        }
        return {
            values: disparityIndexPoint,
            xData: xData,
            yData: yData
        };
    }
}
/* *
 *
 *  Static Properties
 *
 * */
/**
 * Disparity Index.
 * This series requires the `linkedTo` option to be set and should
 * be loaded after the `stock/indicators/indicators.js` file.
 *
 * @sample stock/indicators/disparity-index
 *         Disparity Index indicator
 *
 * @extends      plotOptions.sma
 * @since 9.1.0
 * @product      highstock
 * @excluding    allAreas, colorAxis, joinBy, keys, navigatorOptions,
 *               pointInterval, pointIntervalUnit, pointPlacement,
 *               pointRange, pointStart, showInNavigator, stacking
 * @requires     stock/indicators/indicators
 * @requires     stock/indicators/disparity-index
 * @optionparent plotOptions.disparityindex
 */
DisparityIndexIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
    params: {
        /**
         * The average used to calculate the Disparity Index indicator.
         * By default it uses SMA, with EMA as an option. To use other
         * averages, e.g. TEMA, the `stock/indicators/tema.js` file needs to
         * be loaded.
         *
         * If value is different than `ema`, `dema`, `tema` or `wma`,
         * then sma is used.
         */
        average: 'sma',
        index: 3
    },
    marker: {
        enabled: false
    },
    dataGrouping: {
        approximation: 'averages'
    }
});
extend(DisparityIndexIndicator.prototype, {
    nameBase: 'Disparity Index',
    nameComponents: ['period', 'average']
});
SeriesRegistry.registerSeriesType('disparityindex', DisparityIndexIndicator);
/* *
 *
 *  Default Export
 *
 * */
export default DisparityIndexIndicator;
/* *
 *
 *  API Options
 *
 * */
/**
 * The Disparity Index indicator series.
 * If the [type](#series.disparityindex.type) option is not
 * specified, it is inherited from [chart.type](#chart.type).
 *
 * @extends   series,plotOptions.disparityindex
 * @since 9.1.0
 * @product   highstock
 * @excluding allAreas, colorAxis,  dataParser, dataURL, joinBy, keys,
 *            navigatorOptions, pointInterval, pointIntervalUnit,
 *            pointPlacement, pointRange, pointStart, showInNavigator, stacking
 * @requires  stock/indicators/indicators
 * @requires  stock/indicators/disparity-index
 * @apioption series.disparityindex
 */
''; // To include the above in the js output
