/* *
 *
 *  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 { extend, isNumber, merge } from '../../../Shared/Utilities.js';
import { error } from '../../../Core/Utilities.js';
/* *
 *
 *  Class
 *
 * */
/**
 * The OBV series type.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.obv
 *
 * @augments Highcharts.Series
 */
class OBVIndicator extends SMAIndicator {
    /* *
     *
     *  Functions
     *
     * */
    getValues(series, params) {
        const volumeSeries = series.chart.get(params.volumeSeriesID), xVal = series.xData, yVal = series.yData, OBV = [], xData = [], yData = [], hasOHLC = !isNumber(yVal[0]);
        let OBVPoint = [], i = 1, previousOBV = 0, currentOBV = 0, previousClose = 0, currentClose = 0, volume;
        // Checks if volume series exists.
        if (volumeSeries) {
            volume = volumeSeries.getColumn('y');
            // Add first point and get close value.
            OBVPoint = [xVal[0], previousOBV];
            previousClose = hasOHLC ?
                yVal[0][3] : yVal[0];
            OBV.push(OBVPoint);
            xData.push(xVal[0]);
            yData.push(OBVPoint[1]);
            for (i; i < yVal.length; i++) {
                currentClose = hasOHLC ?
                    yVal[i][3] : yVal[i];
                if (currentClose > previousClose) { // Up
                    currentOBV = previousOBV + volume[i];
                }
                else if (currentClose === previousClose) { // Constant
                    currentOBV = previousOBV;
                }
                else { // Down
                    currentOBV = previousOBV - volume[i];
                }
                // Add point.
                OBVPoint = [xVal[i], currentOBV];
                // Assign current as previous for next iteration.
                previousOBV = currentOBV;
                previousClose = currentClose;
                OBV.push(OBVPoint);
                xData.push(xVal[i]);
                yData.push(OBVPoint[1]);
            }
        }
        else {
            error('Series ' +
                params.volumeSeriesID +
                ' not found! Check `volumeSeriesID`.', true, series.chart);
            return;
        }
        return {
            values: OBV,
            xData: xData,
            yData: yData
        };
    }
}
/* *
 *
 *  Static Properties
 *
 * */
/**
 * On-Balance Volume (OBV) technical indicator. This series
 * requires the `linkedTo` option to be set and should be loaded after
 * the `stock/indicators/indicators.js` file. Through the `volumeSeriesID`
 * there also should be linked the volume series.
 *
 * @sample stock/indicators/obv
 *         OBV indicator
 *
 * @extends      plotOptions.sma
 * @since 9.1.0
 * @product      highstock
 * @requires     stock/indicators/indicators
 * @requires     stock/indicators/obv
 * @excluding    allAreas, colorAxis, joinBy, keys, navigatorOptions,
 *               pointInterval, pointIntervalUnit, pointPlacement,
 *               pointRange, pointStart, showInNavigator, stacking
 * @optionparent plotOptions.obv
 */
OBVIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
    marker: {
        enabled: false
    },
    /**
     * @excluding index, period
     */
    params: {
        // Index and period are unchangeable, do not inherit (#15362)
        index: void 0,
        period: void 0,
        /**
         * The id of another series to use its data as volume data for the
         * indicator calculation.
         */
        volumeSeriesID: 'volume'
    },
    tooltip: {
        valueDecimals: 0
    }
});
extend(OBVIndicator.prototype, {
    nameComponents: void 0
});
SeriesRegistry.registerSeriesType('obv', OBVIndicator);
/* *
 *
 *  Default Export
 *
 * */
export default OBVIndicator;
/* *
 *
 *  API Options
 *
 * */
/**
 * A `OBV` series. If the [type](#series.obv.type) option is not
 * specified, it is inherited from [chart.type](#chart.type).
 *
 * @extends   series,plotOptions.obv
 * @since 9.1.0
 * @product   highstock
 * @excluding dataParser, dataURL
 * @requires  stock/indicators/indicators
 * @requires  stock/indicators/obv
 * @apioption series.obv
 */
''; // To include the above in the js output
