/* *
 *
 *  A commercial license may be required depending on use.
 *  See www.highcharts.com/license
 *
 *
 * */
'use strict';
import AD from '../AD/ADIndicator.js'; // For historic reasons, AD is built into Chaikin
import SeriesRegistry from '../../../Core/Series/SeriesRegistry.js';
const { ema: EMAIndicator } = SeriesRegistry.seriesTypes;
import { correctFloat, extend, merge } from '../../../Shared/Utilities.js';
import { error } from '../../../Core/Utilities.js';
/* *
 *
 *  Class
 *
 * */
/**
 * The Chaikin series type.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.chaikin
 *
 * @augments Highcharts.Series
 */
class ChaikinIndicator extends EMAIndicator {
    /* *
     *
     *  Functions
     *
     * */
    getValues(series, params) {
        const periods = params.periods, period = params.period, 
        // 0- date, 1- Chaikin Oscillator
        CHA = [], xData = [], yData = [];
        let oscillator, i;
        // Check if periods are correct
        if (periods.length !== 2 || periods[1] <= periods[0]) {
            error('Error: "Chaikin requires two periods. Notice, first ' +
                'period should be lower than the second one."');
            return;
        }
        // Accumulation Distribution Line data
        const ADL = AD.prototype.getValues.call(this, series, {
            volumeSeriesID: params.volumeSeriesID,
            period: period
        });
        // Check if adl is calculated properly, if not skip
        if (!ADL) {
            return;
        }
        // Shorter Period EMA
        const SPE = super.getValues.call(this, ADL, {
            period: periods[0]
        });
        // Longer Period EMA
        const LPE = super.getValues.call(this, ADL, {
            period: periods[1]
        });
        // Check if ema is calculated properly, if not skip
        if (!SPE || !LPE) {
            return;
        }
        const periodsOffset = periods[1] - periods[0];
        for (i = 0; i < LPE.yData.length; i++) {
            oscillator = correctFloat(SPE.yData[i + periodsOffset] -
                LPE.yData[i]);
            CHA.push([LPE.xData[i], oscillator]);
            xData.push(LPE.xData[i]);
            yData.push(oscillator);
        }
        return {
            values: CHA,
            xData: xData,
            yData: yData
        };
    }
}
/* *
 *
 *  Static Properties
 *
 * */
/**
 * Chaikin Oscillator. This series requires the `linkedTo` option to
 * be set and should be loaded after the `stock/indicators/indicators.js`.
 *
 * @sample {highstock} stock/indicators/chaikin
 *         Chaikin Oscillator
 *
 * @extends      plotOptions.ema
 * @since        7.0.0
 * @product      highstock
 * @excluding    allAreas, colorAxis, joinBy, keys, navigatorOptions,
 *               pointInterval, pointIntervalUnit, pointPlacement,
 *               pointRange, pointStart, showInNavigator, stacking
 * @requires     stock/indicators/indicators
 * @requires     stock/indicators/chaikin
 * @optionparent plotOptions.chaikin
 */
ChaikinIndicator.defaultOptions = merge(EMAIndicator.defaultOptions, {
    /**
     * Parameters used in calculation of Chaikin Oscillator
     * series points.
     *
     * @excluding index
     */
    params: {
        index: void 0, // Unused index, do not inherit (#15362)
        /**
         * The id of volume series which is mandatory.
         * For example using OHLC data, volumeSeriesID='volume' means
         * the indicator will be calculated using OHLC and volume values.
         */
        volumeSeriesID: 'volume',
        /**
         * Parameter used indirectly for calculating the `AD` indicator.
         * Decides about the number of data points that are taken
         * into account for the indicator calculations.
         */
        period: 9,
        /**
         * Periods for Chaikin Oscillator calculations.
         *
         * @type    {Array<number>}
         * @default [3, 10]
         */
        periods: [3, 10]
    }
});
extend(ChaikinIndicator.prototype, {
    nameBase: 'Chaikin Osc',
    nameComponents: ['periods']
});
SeriesRegistry.registerSeriesType('chaikin', ChaikinIndicator);
/* *
 *
 *  Default Export
 *
 * */
export default ChaikinIndicator;
/* *
 *
 *  API Options
 *
 * */
/**
 * A `Chaikin Oscillator` series. If the [type](#series.chaikin.type)
 * option is not specified, it is inherited from [chart.type](#chart.type).
 *
 * @extends   series,plotOptions.chaikin
 * @since     7.0.0
 * @product   highstock
 * @excluding allAreas, colorAxis, dataParser, dataURL, joinBy, keys,
 *            navigatorOptions, pointInterval, pointIntervalUnit,
 *            pointPlacement, pointRange, pointStart, stacking, showInNavigator
 * @requires  stock/indicators/indicators
 * @requires  stock/indicators/chaikin
 * @apioption series.chaikin
 */
''; // To include the above in the js output
