HLTech / judge-d-ui

import { select, event, selectAll } from 'd3-selection';

import { Simulation } from 'd3-force';

import { drag } from 'd3-drag';

import { zoom, zoomIdentity } from 'd3-zoom';

import { BACKGROUND_HIGHLIGHT_OPACITY, LabelColors, Selectors, TextColors, TRANSITION_DURATION } from '../AppConsts';

export function getLabelTextDimensions(node: Node) {

    const textNode = select<SVGGElement, DependencyNode>(node.previousSibling as SVGGElement).node();

    if (!textNode) {

        return undefined;

    }

    return textNode.getBBox();

}

export function getNodeDimensions(selectedNode: DependencyNode): { width: number; height: number } {

    const foundNode = select<SVGGElement, DependencyNode>('#labels')

        .selectAll<SVGGElement, DependencyNode>('g')

        .filter((node: DependencyNode) => node.x === selectedNode.x && node.y === selectedNode.y)

        .node();

    return foundNode ? foundNode.getBBox() : { width: 200, height: 25 };

}

export function findMaxDependencyLevel(labelNodesGroup: NodeSelection<SVGGElement>) {

    return (

        Math.max(

            ...labelNodesGroup

                .selectAll<HTMLElement, DependencyNode>('g')

                .filter((node: DependencyNode) => node.level > 0)

                .data()

                .map((node: DependencyNode) => node.level)

        ) - 1

    );

}

export function highlight(clickedNode: DependencyNode, links: LinkSelection) {

    const linksData = links.data();

    const labelNodes = selectAllNodes();

    const visitedNodes = setDependencyLevelOnEachNode(clickedNode, labelNodes.data());

    if (visitedNodes.length === 1) {

        return;

    }

    labelNodes.each(function(this: SVGGElement, node: DependencyNode) {

        const areNodesDirectlyConnected = areNodesConnected(clickedNode, node, linksData);

        const labelElement = this.firstElementChild;

        const textElement = this.lastElementChild;

        if (!labelElement || !textElement) {

            return;

        }

        if (areNodesDirectlyConnected) {

            select<Element, DependencyNode>(labelElement).attr('fill', getHighLightedLabelColor);

            select<Element, DependencyNode>(textElement).style('fill', TextColors.HIGHLIGHTED);

        } else {

            select<Element, DependencyNode>(labelElement).attr('fill', LabelColors.DEFAULT);

            select<Element, DependencyNode>(textElement).style('fill', TextColors.DEFAULT);

        }

    });

}

export function selectHighLightedNodes() {

    return selectAllNodes().filter(function(this: SVGGElement) {

        return this.firstElementChild ? this.firstElementChild.getAttribute('fill') !== LabelColors.DEFAULT : false;

    });

}

export function selectAllNodes() {

    return select(Selectors.LABELS).selectAll<SVGGElement, DependencyNode>('g');

}

export function selectHighlightBackground() {

    return select(Selectors.HIGHLIGHT_BACKGROUND);

}

function selectDetailsButtonWrapper() {

    return select(Selectors.DETAILS_BUTTON);

}

export function selectDetailsButtonRect() {

    return selectDetailsButtonWrapper().select('rect');

}

export function selectDetailsButtonText() {

    return selectDetailsButtonWrapper().select('text');

}

export function centerScreenToDimension(dimension: ReturnType<typeof findGroupBackgroundDimension>, scale?: number) {

    if (dimension) {

        const svgContainer = select(Selectors.CONTAINER);

        const width = Number(svgContainer.attr('width'));

        const height = Number(svgContainer.attr('height'));

        const scaleValue = scale || Math.min(1.3, 0.9 / Math.max(dimension.width / width, dimension.height / height));

        svgContainer

            .attr('data-scale', scaleValue)

            .transition()

            .duration(TRANSITION_DURATION)

            .call(

                zoom<any, any>().on('zoom', zoomed).transform,

                zoomIdentity

                    .translate(width / 2, height / 2)

                    .scale(scaleValue)

                    .translate(-dimension.x - dimension.width / 2, -dimension.y - dimension.height / 2)

            );

    }

}

function getScaleValue() {

    return select(Selectors.CONTAINER).attr('data-scale');

}

function removeHighlightBackground() {

    const detailsButtonRectSelection = selectDetailsButtonRect();

    const detailsButtonTextSelection = selectDetailsButtonText();

    selectAll([selectHighlightBackground().node(), detailsButtonRectSelection.node(), detailsButtonTextSelection.node()])

        .transition()

        .duration(TRANSITION_DURATION)

        .style('opacity', 0);

}

    }

}

export function zoomToHighLightedNodes() {

    const highlightedNodes = selectHighLightedNodes();

    const dimension = findGroupBackgroundDimension(highlightedNodes.data());

    centerScreenToDimension(dimension);

    showHighlightBackground(dimension);

}

export function setDependencyLevelOnEachNode(clickedNode: DependencyNode, nodes: DependencyNode[]): DependencyNode[] {

    nodes.forEach((node: DependencyNode) => (node.level = 0));

    const visitedNodes: DependencyNode[] = [];

    const nodesToVisit: DependencyNode[] = [];

    nodesToVisit.push({ ...clickedNode, level: 1 });

    while (nodesToVisit.length > 0) {

        const currentNode = nodesToVisit.shift();

        if (!currentNode) {

            return [];

        }

        currentNode.links.forEach((node: DependencyNode) => {

            if (!containsNode(visitedNodes, node) && !containsNode(nodesToVisit, node)) {

                node.level = currentNode.level + 1;

                nodesToVisit.push(node);

            }

        });

        visitedNodes.push(currentNode);

    }

    return visitedNodes;

}

function containsNode(arr: DependencyNode[], node: DependencyNode) {

    return arr.findIndex((el: DependencyNode) => compareNodes(el, node)) > -1;

}

export function compareNodes<T extends { name: string; version: string }, K extends { name: string; version: string }>(

    node1: T,

    node2: K

): Boolean {

    return node1.name === node2.name && node1.version === node2.version;

}

export function areNodesConnected(a: DependencyNode, b: DependencyNode, links: DependencyLink[]) {

    return (

        a.index === b.index ||

        links.some(

            link =>

                (link.source.index === a.index && link.target.index === b.index) ||

                (link.source.index === b.index && link.target.index === a.index)

        )

    );

}

export function getHighLightedLabelColor(node: DependencyNode) {

    const { isConsumer, isProvider } = node;

    if (isConsumer && isProvider) {

        return LabelColors.PROVIDER_CONSUMER;

    }

    if (isProvider) {

        return LabelColors.PROVIDER;

    }

    if (isConsumer) {

        return LabelColors.CONSUMER;

    }

    return LabelColors.DEFAULT;

}

export function handleDrag(simulation: Simulation<DependencyNode, DependencyLink>) {

    return drag<SVGGElement, DependencyNode>()

        .on('start', (node: DependencyNode) => {

            if (!selectHighLightedNodes().data().length) {

                dragStarted(node, simulation);

            }

        })

        .on('drag', (node: DependencyNode) => {

            if (!selectHighLightedNodes().data().length) {

                dragged(node);

            }

        })

        .on('end', (node: DependencyNode) => {

            if (!selectHighLightedNodes().data().length) {

                dragEnded(node, simulation);

            }

        });

}

function dragStarted(node: DependencyNode, simulation: Simulation<DependencyNode, DependencyLink>) {

    if (!event.active) {

        simulation.alphaTarget(0.3).restart();

    }

    node.fx = node.x;

    node.fy = node.y;

}

function dragged(node: DependencyNode) {

    node.fx = event.x;

    node.fy = event.y;

}

function dragEnded(node: DependencyNode, simulation: Simulation<DependencyNode, DependencyLink>) {

    if (!event.active) {

        simulation.alphaTarget(0);

    }

    node.fx = null;

    node.fy = null;

}

export function zoomed() {

    const { transform } = event;

    const zoomLayer = select(Selectors.ZOOM);

    zoomLayer.attr('transform', transform);

    zoomLayer.attr('stroke-width', 1 / transform.k);

}

export function findGroupBackgroundDimension(nodesGroup: DependencyNode[]) {

    if (nodesGroup.length === 0) {

        return undefined;

    }

    let upperLimitNode = nodesGroup[0];

    let lowerLimitNode = nodesGroup[0];

    let leftLimitNode = nodesGroup[0];

    let rightLimitNode = nodesGroup[0];

    nodesGroup.forEach((node: DependencyNode) => {

        if (!node.x || !node.y || !rightLimitNode.x || !leftLimitNode.x || !upperLimitNode.y || !lowerLimitNode.y) {

            return;

        }

        if (node.x > rightLimitNode.x) {

            rightLimitNode = node;

        }

        if (node.x < leftLimitNode.x) {

            leftLimitNode = node;

        }

        if (node.y < upperLimitNode.y) {

            upperLimitNode = node;

        }

        if (node.y > lowerLimitNode.y) {

            lowerLimitNode = node;

        }

    });

    const upperLimitWithOffset = upperLimitNode.y ? upperLimitNode.y - 50 : 0;

    const leftLimitWithOffset = leftLimitNode.x ? leftLimitNode.x - 100 : 0;

    const width = rightLimitNode.x && rightLimitNode.width ? rightLimitNode.x + rightLimitNode.width + 50 - leftLimitWithOffset : 0;

    const height = lowerLimitNode.y ? lowerLimitNode.y! + 100 - upperLimitWithOffset : 0;

    return {

        x: leftLimitWithOffset,

        y: upperLimitWithOffset,

        width,

        height,

    };

}

export function setResetViewHandler() {

    LevelStorage.reset();

    const svgContainer = select(Selectors.CONTAINER);

    svgContainer.on('click', () => {

        const highlightedNodes = selectHighLightedNodes();

        if (highlightedNodes.data().length) {

            selectAllNodes().each((node: DependencyNode) => (node.level = 0));

            const dimension = findGroupBackgroundDimension(highlightedNodes.data());

            highlightedNodes.each(function(this: SVGGElement) {

                const labelElement = this.firstElementChild;

                const textElement = this.lastElementChild;

                if (!labelElement || !textElement) {

                    return;

                }

                select<Element, DependencyNode>(labelElement).attr('fill', LabelColors.DEFAULT);

                select<Element, DependencyNode>(textElement).style('fill', TextColors.DEFAULT);

            });

            removeHighlightBackground();

            centerScreenToDimension(dimension, 1);

        }

    });

}

export class LevelStorage {

    private static level: number = 1;

    private static maxLevel: number = 1;

    public static getLevel(): number {

        return this.level;

    }

    public static increase() {

        this.level = this.level + 1;

    }

    public static decrease() {

        this.level = this.level - 1;

    }

    public static isBelowMax() {

        return this.level < this.maxLevel;

    }

    static isAboveMin() {

        return this.level > 1;

    }

    static setMaxLevel(maxLevel: number) {

        this.maxLevel = maxLevel;

    }

    static getMaxLevel(): number {

        return this.maxLevel;

    }

    public static reset() {

        this.level = 1;

        this.maxLevel = 1;

    }

}