Hierarchical Partition Sunburst Radial Tree

import { type ChartPoint, defineChart } from "@tanstack/charts";
import { sunburst } from "@tanstack/charts/hierarchy/sunburst";
import { motion } from "@tanstack/charts/motion";
import { polar } from "@tanstack/charts/polar";
import { tooltip } from "@tanstack/charts/tooltip";
import { Chart } from "@tanstack/react-charts/core";
import { useMemo } from "react";

import { Sun } from "lucide-react";

import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from "@/components/ui/card";

interface SunburstNode {
    name: string;
    size?: number;
    branchId?: string;
}

const motionRenderer = motion({
    initial: "always",
    transition: { type: "spring", stiffness: 170, damping: 18, mass: 1 },
});

function generateDemoData(): SunburstNode[] {
    return [
        { name: "Analytics", size: 100, branchId: "b1" },
        { name: "Analytics.Cluster", size: 40, branchId: "b1" },
        { name: "Analytics.Cluster.Agglomerative", size: 20, branchId: "b1" },
        { name: "Analytics.Cluster.KMeans", size: 20, branchId: "b1" },
        { name: "Analytics.Graph", size: 60, branchId: "b1" },
        { name: "Analytics.Graph.Betweenness", size: 30, branchId: "b1" },
        { name: "Analytics.Graph.PageRank", size: 30, branchId: "b1" },
        { name: "Display", size: 80, branchId: "b2" },
        { name: "Display.Text", size: 30, branchId: "b2" },
        { name: "Display.Sprite", size: 50, branchId: "b2" },
        { name: "Physics", size: 70, branchId: "b3" },
        { name: "Physics.Gravity", size: 35, branchId: "b3" },
        { name: "Physics.Collision", size: 35, branchId: "b3" },
    ];
}

function shadcnTooltipContent<TDatum>(points: readonly ChartPoint<TDatum>[]) {
    if (points.length === 0) return { title: "", rows: [] };
    const d = points[0].datum as { data?: SunburstNode; value?: number; id?: string };
    if (!d) return { title: "", rows: [] };
    const name = (d.data?.name || d.id || "").replaceAll(".", " › ");
    return {
        title: name,
        rows: [{ label: "Proportional Node Size", value: `${d.value ?? 0} units`, color: "var(--chart-1)" }],
    };
}

export function SunburstChart() {
    const data = useMemo(() => generateDemoData(), []);

    const definition = useMemo(
        () =>
            defineChart(
                {
                    renderer: motionRenderer,
                    scales: {
                        x: null,
                        y: null,
                    },
                    marks: [
                        polar({
                            radiusRatio: 0.86,
                            startAngle: Math.PI / 2,
                            endAngle: Math.PI / 2 - Math.PI * 2,
                            scales: {
                                angle: null,
                                radius: null,
                            },
                            marks: [
                                sunburst(data, {
                                    id: "sunburst-arcs",
                                    path: "name",
                                    delimiter: ".",
                                    value: "size",
                                    innerRadius: ({ radius }) => radius * 0.15,
                                    outerRadius: ({ radius }) => {
                                        const inner = radius * 0.15;
                                        return inner + ((radius - inner) * 2) / 3;
                                    },
                                    ringPadding: 2,
                                    color: "branchId",
                                    stroke: "var(--background)",
                                    strokeWidth: 1.5,
                                }),
                            ],
                        }),
                    ],
                    color: {
                        range: ["var(--chart-1)", "var(--chart-2)", "var(--chart-3)"],
                    },
                    margin: { top: 20, right: 20, bottom: 20, left: 20 },
                    theme: {
                        foreground: "var(--muted-foreground)",
                        grid: "var(--border)",
                        background: "transparent",
                    },
                },
                {
                    keyboard: true,
                    tooltip: {
                        use: tooltip,
                        className:
                            "font-sans shadow-none rounded-md bg-popover text-popover-foreground border p-2 text-xs",
                        anchor: "pointer",
                        placement: "auto",
                        content: (points) => shadcnTooltipContent(points),
                    },
                },
            ),
        [data],
    );

    return (
        <Card className="w-full max-w-xl">
            <CardHeader>
                <CardTitle>Hierarchical Partition Sunburst Radial Ring</CardTitle>
                <CardDescription>
                    Concentric multi-ring sunburst displaying dot-delimited file path hierarchies
                </CardDescription>
            </CardHeader>
            <CardContent>
                <div className="h-[270px] w-full">
                    <Chart
                        definition={definition}
                        renderer={motionRenderer}
                        height={270}
                        ariaLabel="Hierarchical Partition Sunburst Radial Ring Chart"
                    />
                </div>
            </CardContent>
            <CardFooter className="flex-col items-start gap-2 text-sm">
                <div className="flex items-center gap-2 leading-none font-medium">
                    Multi-level partition tree with proportional arc spans <Sun className="h-4 w-4 text-emerald-500" />
                </div>
                <div className="text-muted-foreground leading-none">
                    `sunburst` mark transforms dot-delimited path strings into radial rings
                </div>
            </CardFooter>
        </Card>
    );
}

export default SunburstChart;