// SPDX-License-Identifier: LicenseRef-Highcharts
/**
 *
 *  (c) 2010-2026 Highsoft AS
 *  Author: Wojciech Chmiel
 *
 *  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: { prototype: smaProto } } = SeriesRegistry.seriesTypes;
import { defined, merge } from '../../Shared/Utilities.js';
import { error } from '../../Core/Utilities.js';
/* *
 *
 *  Composition
 *
 * */
var MultipleLinesComposition;
(function (MultipleLinesComposition) {
    /* *
     *
     *  Declarations
     *
     * */
    /* *
     *
     *  Constants
     *
     * */
    /**
     * Additional lines DOCS names. Elements of linesApiNames array should
     * be consistent with DOCS line names defined in your implementation.
     * Notice that linesApiNames should have decreased amount of elements
     * relative to pointArrayMap (without pointValKey).
     *
     * @private
     * @type {Array<string>}
     */
    const linesApiNames = ['bottomLine'];
    /**
     * Lines ids. Required to plot appropriate amount of lines.
     * Notice that pointArrayMap should have more elements than
     * linesApiNames, because it contains main line and additional lines ids.
     * Also it should be consistent with amount of lines calculated in
     * getValues method from your implementation.
     *
     * @private
     * @type {Array<string>}
     */
    const pointArrayMap = ['top', 'bottom'];
    /**
     * Names of the lines, between which the area should be plotted.
     * If the drawing of the area should
     * be disabled for some indicators, leave this option as an empty array.
     * Names should be the same as the names in the pointArrayMap.
     *
     * @private
     * @type {Array<string>}
     */
    const areaLinesNames = ['top'];
    /**
     * Main line id.
     *
     * @private
     * @type {string}
     */
    const pointValKey = 'top';
    /* *
     *
     *  Functions
     *
     * */
    /**
     * Composition useful for all indicators that have more than one line.
     * Compose it with your implementation where you will provide the
     * `getValues` method appropriate to your indicator and `pointArrayMap`,
     * `pointValKey`, `linesApiNames` properties. Notice that `pointArrayMap`
     * should be consistent with the amount of lines calculated in the
     * `getValues` method.
     *
     * @private
     */
    function compose(IndicatorClass) {
        const proto = IndicatorClass.prototype;
        proto.linesApiNames = (proto.linesApiNames ||
            linesApiNames.slice());
        proto.pointArrayMap = (proto.pointArrayMap ||
            pointArrayMap.slice());
        proto.pointValKey = (proto.pointValKey ||
            pointValKey);
        proto.areaLinesNames = (proto.areaLinesNames ||
            areaLinesNames.slice());
        proto.drawGraph = indicatorDrawGraph;
        proto.getGraphPath = indicatorGetGraphPath;
        proto.toYData = indicatorToYData;
        proto.translate = indicatorTranslate;
        return IndicatorClass;
    }
    MultipleLinesComposition.compose = compose;
    /**
     * Generate the API name of the line
     *
     * @private
     */
    function getLineName(propertyName) {
        return ('plot' +
            propertyName.charAt(0).toUpperCase() +
            propertyName.slice(1));
    }
    /**
     * Create translatedLines Collection based on pointArrayMap.
     *
     * @private
     */
    function getTranslatedLinesNames(indicator, excludedValue) {
        const translatedLines = [];
        (indicator.pointArrayMap || []).forEach((propertyName) => {
            if (propertyName !== excludedValue) {
                translatedLines.push(getLineName(propertyName));
            }
        });
        return translatedLines;
    }
    /**
     * Draw main and additional lines.
     *
     * @private
     */
    function indicatorDrawGraph() {
        const indicator = this, pointValKey = indicator.pointValKey, linesApiNames = indicator.linesApiNames, areaLinesNames = indicator.areaLinesNames, mainLinePoints = indicator.points, mainLineOptions = indicator.options, mainLinePath = indicator.graph, gappedExtend = {
            options: {
                gapSize: mainLineOptions.gapSize
            }
        }, 
        // Additional lines point place holders:
        secondaryLines = [], secondaryLinesNames = getTranslatedLinesNames(indicator, pointValKey);
        let pointsLength = mainLinePoints.length, point;
        // Generate points for additional lines:
        secondaryLinesNames.forEach((plotLine, index) => {
            // Create additional lines point place holders
            secondaryLines[index] = [];
            while (pointsLength--) {
                point = mainLinePoints[pointsLength];
                secondaryLines[index].push({
                    x: point.x,
                    plotX: point.plotX,
                    plotY: point[plotLine],
                    isNull: !defined(point[plotLine])
                });
            }
            pointsLength = mainLinePoints.length;
        });
        // Modify options and generate area fill:
        if (indicator.userOptions.fillColor && areaLinesNames.length) {
            const index = secondaryLinesNames.indexOf(getLineName(areaLinesNames[0])), secondLinePoints = secondaryLines[index], firstLinePoints = areaLinesNames.length === 1 ?
                mainLinePoints :
                secondaryLines[secondaryLinesNames.indexOf(getLineName(areaLinesNames[1]))], originalColor = indicator.color;
            indicator.points = firstLinePoints;
            indicator.nextPoints = secondLinePoints;
            indicator.color = indicator.userOptions.fillColor;
            indicator.options = merge(mainLinePoints, gappedExtend);
            indicator.graph = indicator.area;
            indicator.fillGraph = true;
            smaProto.drawGraph.call(indicator);
            indicator.area = indicator.graph;
            // Clean temporary properties:
            delete indicator.nextPoints;
            delete indicator.fillGraph;
            indicator.color = originalColor;
        }
        // Modify options and generate additional lines:
        linesApiNames.forEach((lineName, i) => {
            if (secondaryLines[i]) {
                indicator.points = secondaryLines[i];
                if (mainLineOptions[lineName]) {
                    indicator.options = merge(mainLineOptions[lineName].styles, gappedExtend);
                }
                else {
                    error('Error: "There is no ' + lineName +
                        ' in DOCS options declared. Check if linesApiNames' +
                        ' are consistent with your DOCS line names."');
                }
                indicator.graph = indicator['graph' + lineName];
                smaProto.drawGraph.call(indicator);
                // Now save lines:
                indicator['graph' + lineName] = indicator.graph;
            }
            else {
                error('Error: "' + lineName + ' doesn\'t have equivalent ' +
                    'in pointArrayMap. To many elements in linesApiNames ' +
                    'relative to pointArrayMap."');
            }
        });
        // Restore options and draw a main line:
        indicator.points = mainLinePoints;
        indicator.options = mainLineOptions;
        indicator.graph = mainLinePath;
        smaProto.drawGraph.call(indicator);
    }
    /**
     * Create the path based on points provided as argument.
     * If indicator.nextPoints option is defined, create the areaFill.
     *
     * @private
     */
    function indicatorGetGraphPath(points) {
        let areaPath, path = [], higherAreaPath = [];
        points = points || this.points;
        // Render Span
        if (this.fillGraph && this.nextPoints) {
            areaPath = smaProto.getGraphPath.call(this, this.nextPoints);
            if (areaPath && areaPath.length) {
                areaPath[0][0] = 'L';
                path = smaProto.getGraphPath.call(this, points);
                higherAreaPath = areaPath.slice(0, path.length);
                // Reverse points, so that the areaFill will start from the end:
                for (let i = higherAreaPath.length - 1; i >= 0; i--) {
                    path.push(higherAreaPath[i]);
                }
            }
        }
        else {
            path = smaProto.getGraphPath.apply(this, arguments);
        }
        return path;
    }
    /**
     * @private
     * @param {Highcharts.Point} point
     *        Indicator point
     * @return {Array<number>}
     *         Returns point Y value for all lines
     */
    function indicatorToYData(point) {
        const pointColl = [];
        (this.pointArrayMap || []).forEach((propertyName) => {
            pointColl.push(point[propertyName]);
        });
        return pointColl;
    }
    /**
     * Add lines plot pixel values.
     *
     * @private
     */
    function indicatorTranslate() {
        const pointArrayMap = this.pointArrayMap;
        let LinesNames = [], value;
        LinesNames = getTranslatedLinesNames(this);
        smaProto.translate.apply(this, arguments);
        this.points.forEach((point) => {
            pointArrayMap.forEach((propertyName, i) => {
                value = point[propertyName];
                // If the modifier, like for example compare exists,
                // modified the original value by that method, #15867.
                if (this.dataModify) {
                    value = this.dataModify.modifyValue(value);
                }
                if (value !== null) {
                    point[LinesNames[i]] = this.yAxis.toPixels(value, true);
                }
            });
        });
    }
})(MultipleLinesComposition || (MultipleLinesComposition = {}));
/* *
 *
 *  Default Export
 *
 * */
export default MultipleLinesComposition;
