Build duration

npm install recharts@^3.9.2

"use client";

import { useState } from "react";
import { CartesianGrid, Line, LineChart, ReferenceLine, XAxis, YAxis } from "recharts";

import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
import {
  ChartContainer,
  ChartSelect,
  ChartTooltip,
  ChartTooltipContent,
  type ChartConfig,
} from "@/components/ui/chart";

const builds = [
  { build: "B1", cold: 210, warm: 108 },
  { build: "B2", cold: 195, warm: 102 },
  { build: "B3", cold: 238, warm: 114 },
  { build: "B4", cold: 226, warm: 109 },
  { build: "B5", cold: 204, warm: 96 },
  { build: "B6", cold: 188, warm: 93 },
];
const budget = 220;
const config = {
  cold: { label: "Cold build", color: "var(--foreground)" },
  warm: {
    label: "Cached build",
    color: "color-mix(in srgb, var(--chart-2) 50%, var(--foreground))",
  },
} satisfies ChartConfig;

export default function ChartBuildDuration() {
  const [range, setRange] = useState("6");
  const [series, setSeries] = useState("both");
  const data = builds.slice(-Number(range));
  const coldMean = data.reduce((total, row) => total + row.cold, 0) / data.length;
  const warmMean = data.reduce((total, row) => total + row.warm, 0) / data.length;
  const breaches = data.filter((row) => row.cold > budget).length;

  return (
    <Card className="min-w-0" data-chart-recipe="builds">
      <CardHeader>
        <p className="font-mono text-xs uppercase tracking-widest">
          Builds / Make the comparison explicit
        </p>
        <CardTitle>
          <h3>Build duration</h3>
        </CardTitle>
        <CardDescription>
          Paired cold and cached runs in seconds. Illustrative measurements of the same builds.
        </CardDescription>
      </CardHeader>
      <CardContent className="grid min-w-0 gap-6">
        <div className="flex flex-wrap gap-4">
          <ChartSelect
            label="Build period"
            value={range}
            onValueChange={setRange}
            options={[
              { value: "6", label: "All 6 builds" },
              { value: "3", label: "Latest 3 builds" },
            ]}
          />
          <ChartSelect
            label="Visible build series"
            value={series}
            onValueChange={setSeries}
            options={[
              { value: "both", label: "Both series" },
              { value: "cold", label: "Cold only" },
              { value: "warm", label: "Cached only" },
            ]}
          />
        </div>
        <dl className="grid gap-4 border-y-2 border-border py-4 sm:grid-cols-3" aria-live="polite">
          {[
            ["Mean cold run", `${coldMean.toFixed(1)} s`],
            ["Mean cached run", `${warmMean.toFixed(1)} s`],
            ["Mean time saved", `${(coldMean - warmMean).toFixed(1)} s`],
          ].map(([label, value]) => (
            <div key={label}>
              <dt className="text-xs">{label}</dt>
              <dd className="mt-1 text-2xl font-heading tabular-nums">{value}</dd>
            </div>
          ))}
        </dl>
        <figure aria-label="Cold and cached build duration in seconds" className="min-w-0">
          <ChartContainer config={config} className="h-72 w-full min-w-0 aspect-auto">
            <LineChart
              accessibilityLayer
              data={data}
              margin={{ top: 12, right: 12, left: 0, bottom: 0 }}
            >
              <CartesianGrid vertical={false} />
              <XAxis dataKey="build" tickLine={false} axisLine={false} tickMargin={10} />
              <YAxis
                width={48}
                domain={[0, 300]}
                tickLine={false}
                axisLine={false}
                tickFormatter={(value) => `${value}s`}
              />
              <ReferenceLine y={budget} stroke="var(--foreground)" strokeDasharray="2 5" />
              <ChartTooltip
                content={
                  <ChartTooltipContent
                    formatter={(value, name) =>
                      `${name === "cold" ? "Cold" : "Cached"}: ${value} s`
                    }
                  />
                }
              />
              {series !== "warm" && (
                <Line
                  dataKey="cold"
                  type="linear"
                  stroke="var(--color-cold)"
                  strokeWidth={3}
                  dot={{ r: 4, fill: "var(--color-cold)" }}
                  isAnimationActive={false}
                />
              )}
              {series !== "cold" && (
                <Line
                  dataKey="warm"
                  type="linear"
                  stroke="var(--color-warm)"
                  strokeWidth={2}
                  strokeDasharray="8 4"
                  dot={{ r: 4, fill: "var(--secondary-background)", strokeWidth: 2 }}
                  isAnimationActive={false}
                />
              )}
            </LineChart>
          </ChartContainer>
          <figcaption className="mt-3 text-xs leading-5">
            Solid / filled dots: cold. Dashed / open dots: cached. Dotted horizontal line: 220 s
            cold-run budget.
          </figcaption>
        </figure>
        <output className="border-l-4 border-main pl-3 text-sm leading-6">
          {breaches} of {data.length} cold runs exceeded budget. Summaries and the table compare
          both runs even when a plotted series is hidden.
        </output>
        <details className="min-w-0 border-t-2 border-border pt-4">
          <summary className="cursor-pointer text-sm font-heading">View build data</summary>
          <table className="mt-3 w-full text-left text-xs tabular-nums">
            <caption className="pb-3 text-left">
              Paired run durations. Time saved is cold minus cached, in seconds.
            </caption>
            <thead>
              <tr>
                {["Build", "Cold (s)", "Cached (s)", "Saved (s)"].map((label) => (
                  <th key={label} scope="col" className="border-b-2 border-border py-2 pr-2">
                    {label}
                  </th>
                ))}
              </tr>
            </thead>
            <tbody>
              {data.map((row) => (
                <tr key={row.build}>
                  <th scope="row" className="py-3 pr-2">
                    {row.build}
                  </th>
                  <td>{row.cold}</td>
                  <td>{row.warm}</td>
                  <td>{row.cold - row.warm}</td>
                </tr>
              ))}
            </tbody>
          </table>
        </details>
      </CardContent>
    </Card>
  );
}