/* *
 *
 *  A commercial license may be required depending on use.
 *  See www.highcharts.com/license
 *
 *
 * */
'use strict';
import MultipleLinesComposition from '../MultipleLinesComposition.js';
import SeriesRegistry from '../../../Core/Series/SeriesRegistry.js';
const { sma: SMAIndicator } = SeriesRegistry.seriesTypes;
import { correctFloat, extend, merge } from '../../../Shared/Utilities.js';
/* *
 *
 *  Class
 *
 * */
/**
 * The Keltner Channels series type.
 *
 * @private
 * @class
 * @name Highcharts.seriesTypes.keltnerchannels
 *
 * @augments Highcharts.Series
 */
class KeltnerChannelsIndicator extends SMAIndicator {
    /* *
     *
     *  Functions
     *
     * */
    init() {
        SeriesRegistry.seriesTypes.sma.prototype.init.apply(this, arguments);
        // Set default color for lines:
        this.options = merge({
            topLine: {
                styles: {
                    lineColor: this.color
                }
            },
            bottomLine: {
                styles: {
                    lineColor: this.color
                }
            }
        }, this.options);
    }
    getValues(series, params) {
        const period = params.period, periodATR = params.periodATR, multiplierATR = params.multiplierATR, index = params.index, yVal = series.yData, yValLen = yVal ? yVal.length : 0, 
        // Keltner Channels array structure:
        // 0-date, 1-top line, 2-middle line, 3-bottom line
        KC = [], seriesEMA = SeriesRegistry.seriesTypes.ema.prototype.getValues(series, {
            period: period,
            index: index
        }), seriesATR = SeriesRegistry.seriesTypes.atr.prototype.getValues(series, {
            period: periodATR
        }), xData = [], yData = [];
        // Middle line, top line and bottom lineI
        let ML, TL, BL, date, pointEMA, pointATR, i;
        if (yValLen < period) {
            return;
        }
        for (i = period; i <= yValLen; i++) {
            pointEMA = seriesEMA.values[i - period];
            pointATR = seriesATR.values[i - periodATR];
            date = pointEMA[0];
            TL = correctFloat(pointEMA[1] + (multiplierATR * pointATR[1]));
            BL = correctFloat(pointEMA[1] - (multiplierATR * pointATR[1]));
            ML = pointEMA[1];
            KC.push([date, TL, ML, BL]);
            xData.push(date);
            yData.push([TL, ML, BL]);
        }
        return {
            values: KC,
            xData: xData,
            yData: yData
        };
    }
}
/* *
 *
 *  Static Properties
 *
 * */
/**
 * Keltner Channels. This series requires the `linkedTo` option to be set
 * and should be loaded after the `stock/indicators/indicators.js`,
 * `stock/indicators/atr.js`, and `stock/ema/.js`.
 *
 * @sample {highstock} stock/indicators/keltner-channels
 *         Keltner Channels
 *
 * @extends      plotOptions.sma
 * @since        7.0.0
 * @product      highstock
 * @excluding    allAreas, colorAxis, compare, compareBase, joinBy, keys,
 *               navigatorOptions, pointInterval, pointIntervalUnit,
 *               pointPlacement, pointRange, pointStart,showInNavigator,
 *               stacking
 * @requires     stock/indicators/indicators
 * @requires     stock/indicators/keltner-channels
 * @optionparent plotOptions.keltnerchannels
 */
KeltnerChannelsIndicator.defaultOptions = merge(SMAIndicator.defaultOptions, {
    /**
     * Option for fill color between lines in Keltner Channels Indicator.
     *
     * @sample {highstock} stock/indicators/indicator-area-fill
     *      Background fill between lines.
     *
     * @type {Highcharts.Color}
     * @since 9.3.2
     * @apioption plotOptions.keltnerchannels.fillColor
     *
     */
    params: {
        /**
         * The point index which indicator calculations will base. For
         * example using OHLC data, index=2 means the indicator will be
         * calculated using Low values.
         */
        index: 0,
        period: 20,
        /**
         * The ATR period.
         */
        periodATR: 10,
        /**
         * The ATR multiplier.
         */
        multiplierATR: 2
    },
    /**
     * Bottom line options.
     *
     */
    bottomLine: {
        /**
         * Styles for a bottom line.
         *
         */
        styles: {
            /**
             * Pixel width of the line.
             */
            lineWidth: 1,
            /**
             * Color of the line. If not set, it's inherited from
             * `plotOptions.keltnerchannels.color`
             */
            lineColor: void 0
        }
    },
    /**
     * Top line options.
     *
     * @extends plotOptions.keltnerchannels.bottomLine
     */
    topLine: {
        styles: {
            lineWidth: 1,
            lineColor: void 0
        }
    },
    tooltip: {
        pointFormat: '<span style="color:{point.color}">\u25CF</span><b> {series.name}</b><br/>Upper Channel: {point.top}<br/>EMA({series.options.params.period}): {point.middle}<br/>Lower Channel: {point.bottom}<br/>'
    },
    marker: {
        enabled: false
    },
    dataGrouping: {
        approximation: 'averages'
    },
    lineWidth: 1
});
extend(KeltnerChannelsIndicator.prototype, {
    nameBase: 'Keltner Channels',
    areaLinesNames: ['top', 'bottom'],
    nameComponents: ['period', 'periodATR', 'multiplierATR'],
    linesApiNames: ['topLine', 'bottomLine'],
    pointArrayMap: ['top', 'middle', 'bottom'],
    pointValKey: 'middle'
});
MultipleLinesComposition.compose(KeltnerChannelsIndicator);
SeriesRegistry.registerSeriesType('keltnerchannels', KeltnerChannelsIndicator);
/* *
 *
 *  Default Export
 *
 * */
export default KeltnerChannelsIndicator;
/* *
 *
 *  API Options
 *
 * */
/**
 * A Keltner Channels indicator. If the [type](#series.keltnerchannels.type)
 * option is not specified, it is inherited from[chart.type](#chart.type).
 *
 * @extends      series,plotOptions.keltnerchannels
 * @since        7.0.0
 * @product      highstock
 * @excluding    allAreas, colorAxis, compare, compareBase, dataParser, dataURL,
 *               joinBy, keys, navigatorOptions, pointInterval,
 *               pointIntervalUnit, pointPlacement, pointRange, pointStart,
 *               stacking, showInNavigator
 * @requires     stock/indicators/indicators
 * @requires     stock/indicators/keltner-channels
 * @apioption    series.keltnerchannels
 */
''; // To include the above in the js output
