hanzo.ai/components/home/Race.tsx

'use client'

import { useEffect, useLayoutEffect, useMemo, useRef, useState } from 'react'
import { Check, RotateCcw } from 'lucide-react'
import { useI18n } from '@hanzo/i18n/react'
import { Button, Text, View, XStack, YStack, type GuiElement } from '@hanzo/ui'
import { More } from '@hanzo/ui/marketing'
import { Mark } from '@/components/models/Mark'
import { useCoding } from '@/hooks/useCoding'
import { range, times, LEVEL } from '@/lib/coding'
import { race, type Lane } from '@/lib/home'
import { Reading, Section, Win, node, useSeen, useStill } from './chrome'
import { Onward } from './label'

/**
 * Hanzo Dev beside Claude Code on the same held-out repairs, from the research
 * API's coding.repair runs (lib/coding): the build's board first, then the
 * API's answer once the page is idle (hooks/useCoding).
 *
 * A REPLAY OF THE RECORDED TIMINGS, NOT A TRANSCRIPT. The runs store each
 * side's median seconds a task, its model calls a task and its solved count;
 * no per-task transcript is filed. So each window runs a clock and a bar for
 * exactly the median the run records, at the speed it ran, and names the run
 * it replays. Under reduced motion both stand at their last frame. Under the
 * clocks, the paired speed over the tasks both solved and each path Hanzo Dev
 * settled a task by that is a resolved gain, with its own speed and interval,
 * as /benchmarks prints them; both solved counts only while Hanzo Dev solved
 * more (lib/home `race`).
 *
 * In the reader's language, every sentence is one message with its figures as
 * arguments; a clock, a speed and an interval drawn on their own keep their own
 * order on a right-to-left page (`data-i18n-ltr`), and each bar grows from the
 * start of the line.
 */

/** Seconds as the clock prints them. */
const secs = (v: number) => `${v.toFixed(2)} s`

function Track({ lane, solved, take, play, still }: { lane: Lane; solved: boolean; take: number; play: boolean; still: boolean }) {
  const { t, dir } = useI18n()
  const bar = useRef<GuiElement>(null)
  const clock = useRef<GuiElement>(null)
  const [ended, setDone] = useState(false)
  const done = still || ended
  const run = useRef<Animation | null>(null)
  const isClaude = lane.name.toLowerCase().includes('claude')
  const icon = isClaude ? <Mark org="claude" size={15} ink /> : <Mark org="hanzo" size={15} ink />

  // The bar is a paused animation from the first frame, so it waits at zero without a style of its own.
  useLayoutEffect(() => {
    const el = node(bar)
    if (!el || typeof el.animate !== 'function') return
    const a = el.animate([{ transform: 'scaleX(0)' }, { transform: 'scaleX(1)' }], { duration: lane.seconds * 1000, easing: 'linear', fill: 'both' })
    run.current = a
    if (still) a.finish()
    else a.pause()
    return () => a.cancel()
  }, [lane.seconds, still])

  useEffect(() => {
    const a = run.current
    const face = node(clock)
    if (!a || !face) return
    if (still) {
      face.textContent = secs(lane.seconds)
      return
    }
    a.currentTime = 0
    face.textContent = secs(0)
    if (!play) return
    a.play()
    const reset = requestAnimationFrame(() => setDone(false))
    let raf = 0
    const tick = () => {
      const t = Math.min(lane.seconds, Number(a.currentTime ?? 0) / 1000)
      face.textContent = secs(t)
      if (t < lane.seconds) raf = requestAnimationFrame(tick)
    }
    raf = requestAnimationFrame(tick)
    a.onfinish = () => {
      face.textContent = secs(lane.seconds)
      setDone(true)
    }
    return () => {
      cancelAnimationFrame(reset)
      cancelAnimationFrame(raf)
      a.onfinish = null
    }
  }, [take, play, still, lane.seconds])

  return (
    <Win title={lane.name} icon={icon} aside={done ? t('done') : play ? t('working') : t('ready')} slot={`lane-${lane.name}`}>
      <YStack p={14} gap={12} $md={{ p: 20, gap: 14 }}>
        <Text fontFamily="$mono" fontSize="$1" lineHeight="$1" color="var(--muted-foreground)">
          {t('median time a task')}
        </Text>
        <XStack items="center" justify="space-between" gap={12}>
          <Text ref={clock} fontFamily="$mono" fontSize="1.75rem" lineHeight="2rem" $md={{ fontSize: '2.5rem', lineHeight: '2.75rem' }} fontWeight="600" color="var(--foreground)" $platform-web={{ fontVariantNumeric: 'tabular-nums' }} data-clock data-i18n-ltr>
            {secs(lane.seconds)}
          </Text>
          <View
            aria-hidden
            opacity={done ? 1 : 0}
            width={28}
            height={28}
            rounded={9999}
            bg="var(--secondary)"
            items="center"
            justify="center"
            $platform-web={{ borderRadius: '9999px', transition: 'opacity 0.2s ease-in-out' }}
          >
            <Check size={16} strokeWidth={2.25} color="var(--foreground)" />
          </View>
        </XStack>
        <View height={10} rounded={9999} borderWidth={1} borderColor="var(--border-strong)" overflow="hidden" bg="var(--muted)" $platform-web={{ borderRadius: '9999px' }}>
          <View ref={bar} height="100%" rounded={9999} bg="var(--foreground)" $platform-web={{ borderRadius: '9999px', transformOrigin: dir === 'rtl' ? 'right center' : 'left center' }} />
        </View>
        <YStack gap={2} pt={4}>
          {lane.calls != null ? (
            <Reading label={t('model calls a task')}>
              <bdi dir="ltr">{lane.calls.toFixed(1)}</bdi>
            </Reading>
          ) : null}
          {solved ? <Reading label={t('solved')}>{t('{solved} of {of}', { solved: lane.solved, of: lane.of })}</Reading> : null}
        </YStack>
        <Text fontFamily="$mono" fontSize="$1" lineHeight="$1" color="var(--muted-foreground)" $platform-web={{ overflowWrap: 'anywhere' }}>
          {t('replay of run {run}', { run: lane.run })}
        </Text>
      </YStack>
    </Win>
  )
}

export default function Race() {
  const { t } = useI18n()
  const c = useCoding()
  const r = useMemo(() => race(c), [c])
  const [ref, seen] = useSeen(0.35)
  const still = useStill()
  const [take, setTake] = useState(0)
  if (!r) return null
  return (
    <Section
      id="race"
      label="Coding.Tasks"
      title={t('{speed} faster on the same coding tasks.', { speed: times(r.speed) })}
      lede={t("Hanzo Dev and Claude Code were handed the same {n} coding tasks (single-fault repairs), one try each. Each clock replays that side's median time a task, at the speed it ran.", { n: r.base.of })}
    >
      <YStack gap={16}>
        <View ref={ref} display="grid" gridTemplateColumns="minmax(0, 1fr) minmax(0, 1fr)" gap={8} $md={{ gap: 16 }} data-slot="race">
          <Track lane={r.base} solved={r.solved} take={take} play={seen} still={still} />
          <Track lane={r.ours} solved={r.solved} take={take} play={seen} still={still} />
        </View>
        <XStack justify="center" pt={4}>
          <Button
            size="sm"
            variant="outline"
            rounded={9999}
            $platform-web={{ borderRadius: '9999px', display: 'inline-flex', alignItems: 'center', gap: '6px' }}
            disabled={!seen && !still}
            onPress={() => setTake((t) => t + 1)}
          >
            <RotateCcw size={13} aria-hidden />
            {t('Replay race')}
          </Button>
        </XStack>
      </YStack>
      <XStack flexWrap="wrap" items="center" justify="space-between" gap={24}>
        <YStack gap={6} maxW={720} flex={1} minW={260}>
          <Text fontSize="$5" lineHeight="$5" color="var(--foreground)" data-figure="speed">
            {t('{speed} faster over the {n} tasks both solved, {level} interval {range}.', { speed: times(r.speed), n: r.speed.n ?? '', level: LEVEL, range: range(r.speed) })}
          </Text>
          {r.paths.length ? (
            <Text fontSize="$3" lineHeight="$3" color="var(--muted-foreground)">
              {r.solved ? `${t('Claude Code solved {base} of {of}; Hanzo Dev {ours} of {all}.', { base: r.base.solved, of: r.base.of, ours: r.ours.solved, all: r.ours.of })} ` : ''}
              {t('By how Hanzo Dev settled a task:')}
            </Text>
          ) : null}
          <YStack render="ul" $platform-web={{ listStyle: 'none', margin: 0, padding: 0 }} data-figure="paths">
            {r.paths.map((p) => (
              <XStack key={p.label} render="li" justify="space-between" flexWrap="wrap" columnGap={16} py={4} borderTopWidth={1} borderColor="var(--border)" data-path={p.label}>
                <Text fontSize="$2" lineHeight="$2" color="var(--foreground)">
                  {t(p.n === 1 ? '{label}, {n} task' : '{label}, {n} tasks', { label: t(p.label), n: p.n ?? '' })}
                </Text>
                <Text fontFamily="$mono" fontSize="$2" lineHeight="$2" color="var(--muted-foreground)" $platform-web={{ fontVariantNumeric: 'tabular-nums' }} data-i18n-ltr>
                  {times(p)} · {LEVEL} {range(p)}
                </Text>
              </XStack>
            ))}
          </YStack>
        </YStack>
        <XStack gap={16} items="center" flexWrap="wrap">
          <More href="/benchmarks#coding-agent">
            <Onward>{t('Every coding task and both runs')}</Onward>
          </More>
        </XStack>
      </XStack>
    </Section>
  )
}