Many Point Scatter

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

import { scaleLinear, scaleSqrt } from "d3-scale";
import { ScatterChart } from "lucide-react";

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

interface HighDensityDatum {
    name: string;
    weight: number;
    acceleration: number;
    cylinders: number;
    displacement: number;
}

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

function generateDemoData(): HighDensityDatum[] {
    const results: HighDensityDatum[] = [];
    const models = ["Sedan", "Coupe", "SUV", "Truck", "Hatchback"];

    for (let i = 0; i < 180; i++) {
        const weight = 1800 + Math.random() * 3200;
        const acceleration = 22 - (weight - 1800) * 0.003 + (Math.random() - 0.5) * 5;
        const cylinders = [4, 6, 8][i % 3];
        const displacement = 1200 + cylinders * 400 + Math.random() * 800;
        results.push({
            name: `${models[i % models.length]} ${2015 + (i % 10)} #${i + 1}`,
            weight: Math.round(weight),
            acceleration: Number(Math.max(8, acceleration).toFixed(1)),
            cylinders,
            displacement: Math.round(displacement),
        });
    }

    return results;
}

function shadcnTooltipContent<TDatum>(points: readonly ChartPoint<TDatum>[]) {
    if (points.length === 0) return { title: "", rows: [] };
    const d = points[0].datum as HighDensityDatum;
    if (!d) return { title: "", rows: [] };
    return {
        title: d.name,
        rows: [
            { label: "Weight", value: `${d.weight.toLocaleString()} lb`, color: "var(--chart-1)" },
            { label: "0-60mph Time", value: `${d.acceleration}s`, color: "var(--chart-2)" },
            { label: "Engine Displacement", value: `${d.displacement} cc`, color: "var(--foreground)" },
        ],
    };
}

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

    const definition = useMemo(
        () =>
            defineChart(
                {
                    renderer: motionRenderer,
                    marks: [
                        dot(data, {
                            id: "cars",
                            x: "weight",
                            y: "acceleration",
                            color: (r: HighDensityDatum) => `${r.cylinders}`,
                            key: "name",
                            r: "displacement",
                            rScale: {
                                scale: () => scaleSqrt().range([2.5, 6]),
                            },
                            fillOpacity: 0.7,
                            stroke: "var(--background)",
                            strokeWidth: 0.5,
                        }),
                    ],
                    scales: {
                        x: { scale: scaleLinear, grid: true, axis: { label: "Vehicle Weight (lb)" } },
                        y: { scale: scaleLinear, grid: true, axis: { label: "0-60 mph Acceleration (sec)" } },
                    },
                    color: {
                        range: ["var(--chart-1)", "var(--chart-2)", "var(--chart-3)"],
                    },
                    margin: { top: 24, right: 24, bottom: 32, left: 45 },
                    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>High-Density Multivariate Bubble Scatterplot</CardTitle>
                <CardDescription>
                    Large point-count scatterplot encoding weight, acceleration, cylinder count, and engine displacement
                </CardDescription>
            </CardHeader>
            <CardContent>
                <div className="h-[250px] w-full">
                    <Chart
                        definition={definition}
                        renderer={motionRenderer}
                        height={250}
                        ariaLabel="High-Density Multivariate Bubble Scatterplot Chart"
                    />
                </div>
            </CardContent>
            <CardFooter className="flex-col items-start gap-2 text-sm">
                <div className="flex items-center gap-2 leading-none font-medium">
                    Bubble area scales with square-root engine displacement{" "}
                    <ScatterChart className="h-4 w-4 text-emerald-500" />
                </div>
                <div className="text-muted-foreground leading-none">
                    Supports high point count rendering with custom radius and color encoding
                </div>
            </CardFooter>
        </Card>
    );
}

export default ManyPointScatter;