/* *
 *
 *  Networkgraph series
 *
 *  (c) 2010-2026 Highsoft AS
 *  Author: Paweł Fus
 *
 *  A commercial license may be required depending on use.
 *  See www.highcharts.com/license
 *
 *
 * */
'use strict';
import NodesComposition from '../NodesComposition.js';
import SeriesRegistry from '../../Core/Series/SeriesRegistry.js';
const { series: { prototype: seriesProto, prototype: { pointClass: Point } } } = SeriesRegistry;
import U from '../../Core/Utilities.js';
const { addEvent, css, defined, extend, pick } = U;
/* *
 *
 *  Class
 *
 * */
class NetworkgraphPoint extends Point {
    /* *
     *
     *  Functions
     *
     * */
    /**
     * Destroy point. If it's a node, remove all links coming out of this
     * node. Then remove point from the layout.
     * @private
     */
    destroy() {
        if (this.isNode) {
            this.linksFrom.concat(this.linksTo).forEach(function (link) {
                // Removing multiple nodes at the same time
                // will try to remove link between nodes twice
                if (link.destroyElements) {
                    link.destroyElements();
                }
            });
        }
        this.series.layout.removeElementFromCollection(this, this.series.layout[this.isNode ? 'nodes' : 'links']);
        return Point.prototype.destroy.apply(this, arguments);
    }
    /**
     * Return degree of a node. If node has no connections, it still has
     * deg=1.
     * @private
     */
    getDegree() {
        const deg = this.isNode ?
            this.linksFrom.length + this.linksTo.length :
            0;
        return deg === 0 ? 1 : deg;
    }
    /**
     * Get presentational attributes of link connecting two nodes.
     * @private
     */
    getLinkAttributes() {
        const linkOptions = this.series.options.link, pointOptions = this.options;
        return {
            'stroke-width': pick(pointOptions.width, linkOptions.width),
            stroke: (pointOptions.color || linkOptions.color),
            dashstyle: (pointOptions.dashStyle || linkOptions.dashStyle),
            opacity: pick(pointOptions.opacity, linkOptions.opacity, 1)
        };
    }
    /**
     * Get link path connecting two nodes.
     * @private
     * @return {Array<Highcharts.SVGPathArray>}
     *         Path: `['M', x, y, 'L', x, y]`
     */
    getLinkPath() {
        let left = this.fromNode, right = this.toNode;
        // Start always from left to the right node, to prevent rendering
        // labels upside down
        if (left.plotX > right.plotX) {
            left = this.toNode;
            right = this.fromNode;
        }
        return [
            ['M', left.plotX || 0, left.plotY || 0],
            ['L', right.plotX || 0, right.plotY || 0]
        ];
        /*
        IDEA: different link shapes?
        return [
            'M',
            from.plotX,
            from.plotY,
            'Q',
            (to.plotX + from.plotX) / 2,
            (to.plotY + from.plotY) / 2 + 15,
            to.plotX,
            to.plotY
        ];*/
    }
    /**
     * Get mass fraction applied on two nodes connected to each other. By
     * default, when mass is equal to `1`, mass fraction for both nodes
     * equal to 0.5.
     * @private
     * @return {Highcharts.Dictionary<number>}
     *         For example `{ fromNode: 0.5, toNode: 0.5 }`
     */
    getMass() {
        const m1 = this.fromNode.mass, m2 = this.toNode.mass, sum = m1 + m2;
        return {
            fromNode: 1 - m1 / sum,
            toNode: 1 - m2 / sum
        };
    }
    /**
     * Basic `point.init()` and additional styles applied when
     * `series.draggable` is enabled.
     * @private
     */
    constructor(series, options, x) {
        super(series, options, x);
        if (this.series.options.draggable &&
            !this.series.chart.styledMode) {
            addEvent(this, 'mouseOver', function () {
                css(this.series.chart.container, { cursor: 'move' });
            });
            addEvent(this, 'mouseOut', function () {
                css(this.series.chart.container, { cursor: 'default' });
            });
        }
    }
    /**
     * @private
     */
    isValid() {
        return !this.isNode || defined(this.id);
    }
    /**
     * Redraw link's path.
     * @private
     */
    redrawLink() {
        const path = this.getLinkPath();
        let attribs;
        if (this.graphic) {
            this.shapeArgs = {
                d: path
            };
            if (!this.series.chart.styledMode) {
                attribs = this.series.pointAttribs(this);
                this.graphic.attr(attribs);
                (this.dataLabels || []).forEach(function (label) {
                    if (label) {
                        label.attr({
                            opacity: attribs.opacity
                        });
                    }
                });
            }
            this.graphic.animate(this.shapeArgs);
            // Required for dataLabels
            const start = path[0];
            const end = path[1];
            if (start[0] === 'M' && end[0] === 'L') {
                this.plotX = (start[1] + end[1]) / 2;
                this.plotY = (start[2] + end[2]) / 2;
            }
        }
    }
    /**
     * Common method for removing points and nodes in networkgraph. To
     * remove `link`, use `series.data[index].remove()`. To remove `node`
     * with all connections, use `series.nodes[index].remove()`.
     * @private
     * @param {boolean} [redraw=true]
     *        Whether to redraw the chart or wait for an explicit call. When
     *        doing more operations on the chart, for example running
     *        `point.remove()` in a loop, it is best practice to set
     *        `redraw` to false and call `chart.redraw()` after.
     * @param {boolean|Partial<Highcharts.AnimationOptionsObject>} [animation=false]
     *        Whether to apply animation, and optionally animation
     *        configuration.
     */
    remove(redraw, animation) {
        const point = this, series = point.series, nodesOptions = series.options.nodes || [];
        let index, i = nodesOptions.length;
        // For nodes, remove all connected links:
        if (point.isNode) {
            // Temporary disable series.points array, because
            // Series.removePoint() modifies it
            series.points = [];
            // Remove link from all nodes collections:
            []
                .concat(point.linksFrom)
                .concat(point.linksTo)
                .forEach(function (linkFromTo) {
                // Incoming links
                index = linkFromTo.fromNode.linksFrom.indexOf(linkFromTo);
                if (index > -1) {
                    linkFromTo.fromNode.linksFrom.splice(index, 1);
                }
                // Outcoming links
                index = linkFromTo.toNode.linksTo.indexOf(linkFromTo);
                if (index > -1) {
                    linkFromTo.toNode.linksTo.splice(index, 1);
                }
                // Remove link from data/points collections
                seriesProto.removePoint.call(series, series.data.indexOf(linkFromTo), false, false);
            });
            // Restore points array, after links are removed
            series.points = series.data.slice();
            // Proceed with removing node. It's similar to
            // Series.removePoint() method, but doesn't modify other arrays
            series.nodes.splice(series.nodes.indexOf(point), 1);
            // Remove node options from config
            while (i--) {
                if (nodesOptions[i].id === point.options.id) {
                    series.options.nodes.splice(i, 1);
                    break;
                }
            }
            if (point) {
                point.destroy();
            }
            // Run redraw if requested
            series.isDirty = true;
            series.isDirtyData = true;
            if (redraw) {
                series.chart.redraw(redraw);
            }
        }
        else {
            series.removePoint(series.data.indexOf(point), redraw, animation);
        }
    }
    /**
     * Render link and add it to the DOM.
     * @private
     */
    renderLink() {
        let attribs;
        if (!this.graphic) {
            this.graphic = this.series.chart.renderer
                .path(this.getLinkPath())
                .addClass(this.getClassName(), true)
                .add(this.series.group);
            if (!this.series.chart.styledMode) {
                attribs = this.series.pointAttribs(this);
                this.graphic.attr(attribs);
                (this.dataLabels || []).forEach(function (label) {
                    if (label) {
                        label.attr({
                            opacity: attribs.opacity
                        });
                    }
                });
            }
        }
    }
}
extend(NetworkgraphPoint.prototype, {
    setState: NodesComposition.setNodeState
});
/* *
 *
 *  Default Export
 *
 * */
export default NetworkgraphPoint;
