Bar Chart Multiple

import { type ChartPoint, barY, defineChart, group } 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 { scaleBand, scaleLinear } from "d3-scale";
import { TrendingUp } from "lucide-react";

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

const twoSeries = ["desktop", "mobile"] as const;

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

function generateDemoData() {
    return [
        { month: "January", value: 186, series: "desktop" },
        { month: "January", value: 80, series: "mobile" },
        { month: "February", value: 305, series: "desktop" },
        { month: "February", value: 200, series: "mobile" },
        { month: "March", value: 237, series: "desktop" },
        { month: "March", value: 120, series: "mobile" },
        { month: "April", value: 73, series: "desktop" },
        { month: "April", value: 190, series: "mobile" },
        { month: "May", value: 209, series: "desktop" },
        { month: "May", value: 130, series: "mobile" },
        { month: "June", value: 214, series: "desktop" },
        { month: "June", value: 140, series: "mobile" },
    ];
}

function shadcnXAxis() {
    return {
        scale: () => scaleBand<string>().paddingInner(0.2).paddingOuter(0.1),
        axis: {
            line: false,
            ticks: {
                size: 0,
                padding: 10,
                format: (value: string) => value.slice(0, 3),
            },
        },
    };
}

function shadcnTheme() {
    return {
        foreground: "var(--muted-foreground)",
        grid: "var(--border)",
        background: "transparent",
    };
}

function titleCase(value: string) {
    return value.charAt(0).toUpperCase() + value.slice(1);
}

function shadcnTooltipContent<TDatum>(points: readonly ChartPoint<TDatum>[]) {
    return {
        title: String(points[0]?.xValue ?? ""),
        rows: points.map((point) => ({
            label: titleCase(
                String(point.group ?? point.markId.replace(/-?(bars|lines|areas|slices|values|radar)$/u, "")),
            ),
            value: Number(point.yValue ?? point.xValue ?? 0).toLocaleString("en-US"),
            color: point.color,
        })),
    };
}

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

    const definition = useMemo(() => {
        const groupScale = scaleBand<string>().domain(twoSeries).paddingInner(0.08).paddingOuter(0);

        return defineChart(
            {
                renderer: motionRenderer,
                motion: {
                    transition: { type: "spring", stiffness: 170, damping: 18, mass: 1 },
                },
                marks: [
                    barY(data, {
                        id: "visitor-bars",
                        x: "month",
                        y: "value",
                        z: "series",
                        color: "series",
                        key: (row) => `${row.month}:${row.series}`,
                        layout: group({ scale: groupScale }),
                        radius: 4,
                    }),
                ],
                scales: {
                    x: shadcnXAxis(),
                    y: { scale: scaleLinear, grid: true, axis: false },
                },
                color: { domain: twoSeries, range: ["var(--chart-1)", "var(--chart-2)"] },
                margin: { top: 10, right: 10, bottom: 30, left: 10 },
                theme: shadcnTheme(),
            },
            {
                focus: "group-x",
                tooltip: {
                    use: tooltip,
                    motion: { type: "spring", stiffness: 170, damping: 18 },
                    className: "font-sans shadow-none rounded-md bg-popover text-popover-foreground border p-2 text-xs",
                    anchor: "group-center",
                    placement: "auto",
                    sort: "color-domain",
                    content: (points) => shadcnTooltipContent(points),
                },
            },
        );
    }, [data]);

    return (
        <Card className="w-full max-w-2xl">
            <CardHeader>
                <CardTitle>Checkout Platform Conversion</CardTitle>
                <CardDescription>Desktop vs Mobile completed checkout orders</CardDescription>
            </CardHeader>
            <CardContent>
                <div className="h-[300px] w-full">
                    <Chart
                        definition={definition}
                        renderer={motionRenderer}
                        height={300}
                        ariaLabel="Checkout Platform Conversion Chart"
                    />
                </div>
            </CardContent>
            <CardFooter className="flex-col items-start gap-2 text-sm">
                <div className="flex items-center gap-2 leading-none font-medium">
                    Mobile checkout completions up by 5.2% this month{" "}
                    <TrendingUp className="h-4 w-4 text-emerald-500" />
                </div>
                <div className="text-muted-foreground leading-none">Showing total visitors for the last 6 months</div>
            </CardFooter>
        </Card>
    );
}

export default BarChartMultiple;