import "./index.css"
import { Link, Meta, Title } from "@solidjs/meta"
import { ProviderIcon } from "@opencode-ai/ui/provider-icon"
import { geoEquirectangular, geoPath } from "d3-geo"
import { scaleSqrt } from "d3-scale"
import countryCodesSource from "i18n-iso-countries/codes.json?raw"
import { feature, mesh } from "topojson-client"
import countriesTopologySource from "world-atlas/countries-110m.json?raw"
import ibmPlexMonoRegularLatin1 from "@ibm/plex/IBM-Plex-Mono/fonts/split/woff2/IBMPlexMono-Regular-Latin1.woff2?url"
import ibmPlexMonoMediumLatin1 from "@ibm/plex/IBM-Plex-Mono/fonts/split/woff2/IBMPlexMono-Medium-Latin1.woff2?url"
import ibmPlexMonoSemiBoldLatin1 from "@ibm/plex/IBM-Plex-Mono/fonts/split/woff2/IBMPlexMono-SemiBold-Latin1.woff2?url"
import ibmPlexMonoBoldLatin1 from "@ibm/plex/IBM-Plex-Mono/fonts/split/woff2/IBMPlexMono-Bold-Latin1.woff2?url"
import {
  getStatsHomeData,
  type CacheRatioEntry,
  type CountryEntry,
  type LeaderboardEntry,
  type MarketDay,
  type StatsHomeData,
  type SessionCostEntry,
  type TokenCostEntry,
  type UsagePoint,
} from "@opencode-ai/stats-core/domain/home"
import { runtime } from "@opencode-ai/stats-core/runtime"
import { createAsync, query } from "@solidjs/router"
import { createEffect, createMemo, createSignal, For, onCleanup, onMount, Show, type JSX } from "solid-js"
import { getRequestEvent } from "solid-js/web"
import type { FeatureCollection, GeometryObject, GeoJsonProperties } from "geojson"
import type { GeometryCollection, Topology } from "topojson-specification"
import {
  applyThemePreference,
  Footer,
  getGitHubStars,
  githubLink,
  Header,
  isThemePreference,
  themeStorageKey,
  type ThemePreference,
} from "./stats-shell"

const products = ["All Users", "Zen", "Go"] as const
const tokenProducts = ["Zen", "Go"] as const
const ranges = ["1D", "1W", "2W", "1M", "2M"] as const
const rangeLabels: Record<UsageRange, string> = {
  "1D": "1 Day",
  "1W": "1 Week",
  "2W": "2 Weeks",
  "1M": "1 Month",
  "2M": "2 Months",
}
const statsHomeTitle = "OpenCode Stats"
const statsHomeDescription = "OpenCode usage, market share, token cost, and session cost stats."
const statsHomeFallbackUrl = "https://opencode.ai/stats/"
const statsUnfurlPath = "banner.png"
const statsUnfurlAlt = "OpenCode Stats wordmark on a dark patterned background"
const usageColors = [
  "#ed6aff",
  "#a684ff",
  "#7c86ff",
  "#51a2ff",
  "#00d3f2",
  "#00d5be",
  "#00bc7d",
  "#9ae600",
  "#ffb900",
  "#ff8904",
  "#ff6467",
]
const marketColors = ["#ed6aff", "#a684ff", "#7c86ff", "#51a2ff", "#00d3f2", "#00d5be", "#00bc7d", "#9ae600", "#ffb900"]
const geoMapWidth = 960
const geoMapHeight = 430
const countryDisplayNames = new Intl.DisplayNames(["en"], { type: "region" })

type UsageProduct = (typeof products)[number]
type TokenProduct = (typeof tokenProducts)[number]
type UsageRange = (typeof ranges)[number]
type IsoCountryCode = readonly [string, string, string]
type WorldCountryProperties = GeoJsonProperties & { name?: string }
type WorldTopology = Topology<{ countries: GeometryCollection<WorldCountryProperties> }>

const countryNumericIds = new Map(
  (JSON.parse(countryCodesSource) as IsoCountryCode[]).map((country) => [country[0], country[2]] as const),
)
const worldTopology = JSON.parse(countriesTopologySource) as WorldTopology
const worldCountryGeometries: GeometryCollection<WorldCountryProperties> = {
  ...worldTopology.objects.countries,
  geometries: worldTopology.objects.countries.geometries.filter((country) => String(country.id ?? "") !== "010"),
}
const worldCountries = feature<WorldCountryProperties>(worldTopology, worldCountryGeometries) as FeatureCollection<
  GeometryObject,
  WorldCountryProperties
>
const worldProjection = geoEquirectangular().fitExtent(
  [
    [10, 12],
    [geoMapWidth - 10, geoMapHeight - 12],
  ],
  worldCountries,
)
const worldPath = geoPath(worldProjection)
const worldCountryPaths = worldCountries.features.map((country) => ({
  id: String(country.id ?? "").padStart(3, "0"),
  path: worldPath(country) ?? "",
}))
const worldBorderPath = worldPath(mesh(worldTopology, worldCountryGeometries, (a, b) => a !== b)) ?? ""

const getData = query(async () => {
  "use server"
  return runtime.runPromise(getStatsHomeData())
}, "getStatsHomeData")

export default function StatsHome() {
  const event = getRequestEvent()
  event?.response.headers.set("Cache-Control", "public, max-age=60, s-maxage=300, stale-while-revalidate=86400")
  const statsHomeUrl = getStatsHomeUrl(
    import.meta.env.BASE_URL,
    event?.request.url ?? (typeof window === "undefined" ? statsHomeFallbackUrl : window.location.href),
  )
  const statsUnfurlUrl = new URL(statsUnfurlPath, statsHomeUrl).toString()
  const data = createAsync(() => getData())
  const githubStars = createAsync(() => getGitHubStars())
  const [themePreference, setThemePreference] = createSignal<ThemePreference>("system")
  const updateThemePreference = (preference: ThemePreference) => {
    applyThemePreference(preference)
    setThemePreference(preference)
    if (typeof window === "undefined") return
    window.localStorage.setItem(themeStorageKey, preference)
  }

  onMount(() => {
    if (typeof window === "undefined") return
    const preference = window.localStorage.getItem(themeStorageKey)
    const nextPreference = isThemePreference(preference) ? preference : "system"
    applyThemePreference(nextPreference)
    setThemePreference(nextPreference)
  })

  return (
    <main data-page="stats" data-theme={themePreference()}>
      <Title>{statsHomeTitle}</Title>
      <Meta name="description" content={statsHomeDescription} />
      <Link rel="canonical" href={statsHomeUrl} />
      <Meta property="og:type" content="website" />
      <Meta property="og:site_name" content="OpenCode" />
      <Meta property="og:title" content={statsHomeTitle} />
      <Meta property="og:description" content={statsHomeDescription} />
      <Meta property="og:url" content={statsHomeUrl} />
      <Meta property="og:image" content={statsUnfurlUrl} />
      <Meta property="og:image:type" content="image/png" />
      <Meta property="og:image:width" content="1200" />
      <Meta property="og:image:height" content="630" />
      <Meta property="og:image:alt" content={statsUnfurlAlt} />
      <Meta name="twitter:card" content="summary_large_image" />
      <Meta name="twitter:title" content={statsHomeTitle} />
      <Meta name="twitter:description" content={statsHomeDescription} />
      <Meta name="twitter:image" content={statsUnfurlUrl} />
      <Meta name="twitter:image:alt" content={statsUnfurlAlt} />
      <Link rel="preload" href={ibmPlexMonoRegularLatin1} as="font" type="font/woff2" crossorigin="anonymous" />
      <Link rel="preload" href={ibmPlexMonoMediumLatin1} as="font" type="font/woff2" crossorigin="anonymous" />
      <Link rel="preload" href={ibmPlexMonoSemiBoldLatin1} as="font" type="font/woff2" crossorigin="anonymous" />
      <Link rel="preload" href={ibmPlexMonoBoldLatin1} as="font" type="font/woff2" crossorigin="anonymous" />
      <Header githubStars={githubStars() ?? githubLink.fallbackStars} />
      <div data-component="container">
        <div data-component="content">
          <Show when={data()} fallback={<StatsLoading />}>
            {(stats) => (
              <>
                <Hero updatedAt={stats().updatedAt} />
                <TopModelsSection data={stats().usage} leaderboard={stats().leaderboard} />
                <SessionCostSection data={stats().sessionCost} />
                <TokenCostSection data={stats().tokenCost} />
                <CacheRatioSection data={stats().cacheRatio} />
                <MarketShareSection data={stats().market} />
                <GeoBreakdownSection data={stats().country} />
              </>
            )}
          </Show>
        </div>
        <Footer themePreference={themePreference()} onThemePreferenceChange={updateThemePreference} />
      </div>
    </main>
  )
}

function getStatsHomeUrl(base: string, requestUrl: string) {
  const url = new URL(base, requestUrl)
  if (url.hostname === "stats.opencode.ai") return "https://opencode.ai/stats/"
  if (url.hostname === "stats.dev.opencode.ai") return "https://dev.opencode.ai/stats/"
  return url.toString()
}

function Hero(props: { updatedAt: string | null }) {
  const [timeZone, setTimeZone] = createSignal("UTC")
  const [previousTimeZone, setPreviousTimeZone] = createSignal("UTC")
  const [isTicking, setIsTicking] = createSignal(false)
  const updatedAtParts = (timeZone: string) =>
    props.updatedAt ? formatUpdatedAtParts(props.updatedAt, timeZone) : { date: "No rows yet", time: "" }
  const previousUpdatedAt = createMemo(() => updatedAtParts(previousTimeZone()))
  const currentUpdatedAt = createMemo(() => updatedAtParts(timeZone()))
  const currentUpdatedLabel = createMemo(() =>
    props.updatedAt ? `Updated ${formatUpdatedAtLabel(currentUpdatedAt())}` : "No rows yet",
  )
  const isDateTicking = createMemo(() => isTicking() && previousUpdatedAt().date !== currentUpdatedAt().date)
  const isTimeTicking = createMemo(() => isTicking() && previousUpdatedAt().time !== currentUpdatedAt().time)

  onMount(() => {
    if (!props.updatedAt) return
    const nextTimeZone = Intl.DateTimeFormat().resolvedOptions().timeZone || "UTC"
    if (nextTimeZone === "UTC") return
    if (
      formatUpdatedAtLabel(formatUpdatedAtParts(props.updatedAt, nextTimeZone)) ===
      formatUpdatedAtLabel(updatedAtParts("UTC"))
    )
      return
    const timeouts: number[] = []
    timeouts.push(
      window.setTimeout(() => {
        setPreviousTimeZone(timeZone())
        setTimeZone(nextTimeZone)
        setIsTicking(true)
        timeouts.push(
          window.setTimeout(() => {
            setPreviousTimeZone(nextTimeZone)
            setIsTicking(false)
          }, 720),
        )
      }, 480),
    )
    onCleanup(() => timeouts.forEach((timeout) => window.clearTimeout(timeout)))
  })

  return (
    <section data-section="hero">
      <p data-slot="hero-meta" aria-live="polite" aria-atomic="true" aria-label={currentUpdatedLabel()}>
        <svg aria-hidden="true" width="16" height="16" viewBox="0 0 16 16">
          <path
            fill-rule="evenodd"
            clip-rule="evenodd"
            d="M13 13H3V3H13V13ZM6.46777 6.81641V7.81641H7.5791V11.3721H8.5791V6.81641H6.46777ZM7.30078 4.62891V5.62891H8.85645V4.62891H7.30078Z"
            fill="currentColor"
          />
        </svg>
        {props.updatedAt ? (
          <>
            <span data-slot="hero-meta-label" aria-hidden="true">
              Updated
            </span>
            <span data-slot="hero-meta-time" aria-hidden="true">
              <HeroMetaTickerPart
                previous={previousUpdatedAt().date}
                current={currentUpdatedAt().date}
                ticking={isDateTicking()}
              />
              <span data-slot="hero-meta-separator">,</span>
              <HeroMetaTickerPart
                previous={previousUpdatedAt().time}
                current={currentUpdatedAt().time}
                ticking={isTimeTicking()}
              />
            </span>
          </>
        ) : (
          <span data-slot="hero-meta-empty">No rows yet</span>
        )}
      </p>
      <div data-slot="hero-canvas">
        <div data-slot="hero-pattern" aria-hidden="true" />
        <h1>Model Stats</h1>
        <p data-slot="hero-copy">
          See which models are winning real usage, how the mix <br data-slot="hero-copy-break" />
          shifts over time, and where momentum is moving each week.
        </p>
      </div>
    </section>
  )
}

function HeroMetaTickerPart(props: { previous: string; current: string; ticking: boolean }) {
  return (
    <span data-slot="hero-meta-ticker" data-ticking={props.ticking}>
      <span data-slot="hero-meta-ticker-track">
        <span data-slot="hero-meta-ticker-item">{props.previous}</span>
        <span data-slot="hero-meta-ticker-item">{props.current}</span>
      </span>
    </span>
  )
}

function StatsLoading() {
  return (
    <>
      <Hero updatedAt={null} />
      <ChartSection title="Usage">
        <EmptyState title="Loading stats" description="Reading model aggregates from model_stat." />
      </ChartSection>
    </>
  )
}

function ChartSection(props: {
  id?: string
  title: string
  description?: string
  controls?: JSX.Element
  children: JSX.Element
}) {
  return (
    <section id={props.id} data-section="chart">
      <div data-slot="section-header">
        <div>
          <h2>{props.title}</h2>
          {props.description && <p>{props.description}</p>}
        </div>
        {props.controls}
      </div>
      {props.children}
    </section>
  )
}

function SectionTitle(props: { title: string; description: string }) {
  return (
    <p data-slot="section-title">
      <strong>{props.title}.</strong> <span>{props.description}</span>
    </p>
  )
}

function SectionBridge(props: { label: string; href: string }) {
  return (
    <a data-component="section-bridge" href={props.href}>
      <span>LEAN MORE</span>
      <i />
      <strong>{props.label}</strong>
      <b>▸</b>
    </a>
  )
}

function EmptyState(props: { title: string; description: string }) {
  return (
    <div data-component="empty-state">
      <strong>{props.title}</strong>
      <p>{props.description}</p>
    </div>
  )
}

function formatUpdatedAtParts(value: string, timeZone: string) {
  const date = new Date(value)
  if (Number.isNaN(date.getTime())) return { date: "just now", time: "" }
  return {
    date: new Intl.DateTimeFormat("en", {
      month: "short",
      day: "numeric",
      timeZone,
    }).format(date),
    time: new Intl.DateTimeFormat("en", {
      hour: "numeric",
      minute: "2-digit",
      timeZone,
      timeZoneName: "short",
    }).format(date),
  }
}

function formatUpdatedAtLabel(value: { date: string; time: string }) {
  if (!value.time) return value.date
  return `${value.date}, ${value.time}`
}

function TopModelsSection(props: { data: StatsHomeData["usage"]; leaderboard: StatsHomeData["leaderboard"] }) {
  const [product, setProduct] = createSignal<UsageProduct>("Go")
  const [range, setRange] = createSignal<UsageRange>("2M")
  const [sheet, setSheet] = createSignal<"product" | "range">()
  const [activeModel, setActiveModel] = createSignal<string>()
  const data = createMemo(() => props.data[product()][range()])
  const leaderboard = createMemo(() => props.leaderboard[product()][range()])

  createEffect(() => {
    if (!sheet()) return
    if (typeof document === "undefined") return
    const htmlOverflow = document.documentElement.style.overflow
    const bodyOverflow = document.body.style.overflow
    document.documentElement.style.overflow = "hidden"
    document.body.style.overflow = "hidden"
    const onKeyDown = (event: KeyboardEvent) => {
      if (event.key === "Escape") setSheet(undefined)
    }
    document.addEventListener("keydown", onKeyDown)
    onCleanup(() => {
      document.documentElement.style.overflow = htmlOverflow
      document.body.style.overflow = bodyOverflow
      document.removeEventListener("keydown", onKeyDown)
    })
  })

  return (
    <section id="top-models" data-section="top-models">
      <h2 data-slot="top-models-title">
        <strong>Top models.</strong> <span>Usage of models across OpenCode Go.</span>
      </h2>
      <Show
        when={data().some((item) => usageTotal(item) > 0)}
        fallback={<EmptyState title="No usage data" description="No model_stat rows matched this product and range." />}
      >
        <TopModelsChart
          data={data()}
          range={range()}
          activeModel={activeModel()}
          onActiveModelChange={setActiveModel}
        />
      </Show>
      <Show
        when={leaderboard().length > 0}
        fallback={
          <EmptyState title="No leaderboard data" description="No model_stat rows matched this product and range." />
        }
      >
        <Leaderboard data={leaderboard()} activeModel={activeModel()} onActiveModelChange={setActiveModel} />
      </Show>
      <div data-slot="chart-footer" hidden>
        <StatsFilters product={product()} range={range()} onProductSelect={setProduct} onRangeSelect={setRange} />
        <div data-slot="top-models-mobile-controls">
          <MobileFilterButton
            label="Product filter"
            value={product()}
            expanded={sheet() === "product"}
            onClick={() => setSheet(sheet() === "product" ? undefined : "product")}
          />
          <MobileFilterButton
            label="Date range"
            value={range()}
            expanded={sheet() === "range"}
            onClick={() => setSheet(sheet() === "range" ? undefined : "range")}
          />
        </div>
      </div>
      <Show when={sheet()}>
        {(kind) => (
          <MobileFilterSheet
            kind={kind()}
            product={product()}
            range={range()}
            onProductSelect={(value) => {
              setProduct(value)
              setSheet(undefined)
            }}
            onRangeSelect={(value) => {
              setRange(value)
              setSheet(undefined)
            }}
            onClose={() => setSheet(undefined)}
          />
        )}
      </Show>
    </section>
  )
}

function MobileFilterButton(props: { label: string; value: string; expanded: boolean; onClick: () => void }) {
  return (
    <button
      data-slot="mobile-filter-button"
      type="button"
      aria-label={props.label}
      aria-expanded={props.expanded ? "true" : "false"}
      onClick={props.onClick}
    >
      <span>{props.value}</span>
      <ChevronDown />
    </button>
  )
}

function MobileFilterSheet(props: {
  kind: "product" | "range"
  product: UsageProduct
  range: UsageRange
  onProductSelect: (product: UsageProduct) => void
  onRangeSelect: (range: UsageRange) => void
  onClose: () => void
}) {
  return (
    <div data-component="mobile-filter-sheet" role="presentation" onClick={props.onClose}>
      <div
        data-slot="filter-sheet-panel"
        role="radiogroup"
        aria-label={props.kind === "product" ? "Product filter" : "Date range"}
      >
        <Show
          when={props.kind === "product"}
          fallback={
            <For each={ranges}>
              {(item) => (
                <button
                  type="button"
                  role="radio"
                  aria-checked={props.range === item}
                  data-active={props.range === item ? "true" : undefined}
                  onClick={(event) => {
                    event.stopPropagation()
                    props.onRangeSelect(item)
                  }}
                >
                  {rangeLabels[item]}
                </button>
              )}
            </For>
          }
        >
          <For each={products}>
            {(item) => (
              <button
                type="button"
                role="radio"
                aria-checked={props.product === item}
                data-active={props.product === item ? "true" : undefined}
                onClick={(event) => {
                  event.stopPropagation()
                  props.onProductSelect(item)
                }}
              >
                {item}
              </button>
            )}
          </For>
        </Show>
      </div>
    </div>
  )
}

function ChevronDown() {
  return (
    <svg width="16" height="16" viewBox="0 0 16 16" aria-hidden="true" fill="none">
      <path d="M5 7L8 10L11 7" stroke="currentColor" />
    </svg>
  )
}

function StatsFilters(props: {
  product: UsageProduct
  range: UsageRange
  onProductSelect: (product: UsageProduct) => void
  onRangeSelect: (range: UsageRange) => void
}) {
  return (
    <>
      <FilterPills
        items={products}
        selected={props.product}
        label="Product filter"
        variant="product"
        onSelect={props.onProductSelect}
      />
      <FilterPills
        items={ranges}
        selected={props.range}
        label="Date range"
        variant="range"
        onSelect={props.onRangeSelect}
      />
    </>
  )
}

function FilterPills<T extends string>(props: {
  items: readonly T[]
  selected: T
  label: string
  variant: "product" | "range"
  onSelect: (item: T) => void
}) {
  return (
    <div data-component="usage-filter" data-variant={props.variant} role="radiogroup" aria-label={props.label}>
      <For each={props.items}>
        {(item) => (
          <button
            type="button"
            role="radio"
            aria-checked={props.selected === item}
            data-active={props.selected === item ? "true" : undefined}
            onClick={() => props.onSelect(item)}
          >
            {item}
          </button>
        )}
      </For>
    </div>
  )
}

function TopModelsChart(props: {
  data: UsagePoint[]
  range: UsageRange
  activeModel: string | undefined
  onActiveModelChange: (model: string | undefined) => void
}) {
  let chartRef: HTMLDivElement | undefined
  const [activeIndex, setActiveIndex] = createSignal<number>()
  const maxTotal = createMemo(() => getTopModelsMaxTotal(props.data))
  const segmentOrder = createMemo(() => getTopModelsSegmentOrder(props.data))
  const activePoint = createMemo(() => props.data[activeIndex() ?? -1])

  createEffect(() => scrollDenseChartToEnd(chartRef, props.range, props.data.length))

  return (
    <div
      ref={chartRef}
      data-component="top-models-chart"
      data-range={props.range}
      data-dense-labels={isDenseColumnRange(props.range) ? "true" : undefined}
      role="img"
      aria-label="Stacked top model usage chart"
      style={{ "--top-models-count": props.data.length } as JSX.CSSProperties}
      onPointerLeave={(event) => {
        if (event.pointerType === "touch") return
        setActiveIndex(undefined)
        props.onActiveModelChange(undefined)
      }}
    >
      <div data-slot="top-models-axis" aria-hidden="true">
        <For each={props.data}>
          {(day, index) => (
            <div
              data-active={activeIndex() === index() ? "true" : undefined}
              data-label-hidden={isColumnLabelHidden(index(), props.data.length) ? "true" : undefined}
              data-mobile-hidden={isTopModelsMobileAxisHidden(index(), props.data.length) ? "true" : undefined}
            >
              <span data-slot="axis-label">
                <span data-slot="axis-total">{formatTokens(usageTotal(day))}</span>
                <span data-slot="axis-date">
                  <span data-slot="axis-date-full">{day.date}</span>
                  <span data-slot="axis-date-mobile">{formatTopModelsMobileDate(day.date, props.range)}</span>
                </span>
              </span>
            </div>
          )}
        </For>
      </div>
      <div
        data-slot="top-models-bars"
        onPointerLeave={(event) => {
          if (event.pointerType === "touch") return
          setActiveIndex(undefined)
          props.onActiveModelChange(undefined)
        }}
      >
        <For each={props.data}>
          {(day, dayIndex) => (
            <div
              data-slot="top-models-bar"
              role="button"
              tabIndex={0}
              aria-label={`${day.date} ${formatTokens(usageTotal(day))}`}
              data-active={activeIndex() === dayIndex() ? "true" : undefined}
              data-muted={activeIndex() !== undefined && activeIndex() !== dayIndex() ? "true" : undefined}
              style={{ "--top-models-bar-height": `${getTopModelsBarHeight(usageTotal(day), maxTotal())}%` }}
              onPointerDown={(event) => {
                if (event.pointerType !== "touch") return
                setActiveIndex(dayIndex())
                props.onActiveModelChange(undefined)
              }}
              onPointerEnter={(event) => {
                setActiveIndex(dayIndex())
                if (isTopModelsBlankHover(event.currentTarget, event.clientY)) props.onActiveModelChange(undefined)
              }}
              onPointerMove={(event) => {
                if (event.pointerType === "touch") return
                setActiveIndex(dayIndex())
                if (isTopModelsBlankHover(event.currentTarget, event.clientY)) props.onActiveModelChange(undefined)
              }}
              onClick={() => {
                setActiveIndex(dayIndex())
                props.onActiveModelChange(undefined)
              }}
              onFocus={() => {
                setActiveIndex(dayIndex())
                props.onActiveModelChange(undefined)
              }}
              onBlur={() => {
                setActiveIndex(undefined)
                props.onActiveModelChange(undefined)
              }}
              onKeyDown={(event) => {
                if (event.key !== "Enter" && event.key !== " ") return
                event.preventDefault()
                setActiveIndex(dayIndex())
                props.onActiveModelChange(undefined)
              }}
            >
              <div
                data-slot="top-models-stack"
                style={{ "grid-template-rows": getTopModelsSegmentRows(day, segmentOrder()) }}
              >
                <For each={stackedTopModelsSegments(day, segmentOrder())}>
                  {(item) => (
                    <i
                      data-series={item.index}
                      data-model={item.segment.model}
                      data-active={props.activeModel === item.segment.model ? "true" : undefined}
                      style={{
                        background: getTopModelsSegmentColor(
                          item.segment.model,
                          item.index,
                          segmentOrder(),
                          activeIndex() !== undefined && activeIndex() !== dayIndex(),
                          props.activeModel,
                        ),
                      }}
                      onPointerEnter={(event) => {
                        event.stopPropagation()
                        setActiveIndex(dayIndex())
                        props.onActiveModelChange(item.segment.model)
                      }}
                      onPointerDown={(event) => {
                        event.stopPropagation()
                        setActiveIndex(dayIndex())
                        props.onActiveModelChange(item.segment.model)
                      }}
                      onClick={(event) => {
                        event.stopPropagation()
                        setActiveIndex(dayIndex())
                        props.onActiveModelChange(item.segment.model)
                      }}
                    />
                  )}
                </For>
              </div>
              <Show when={activeIndex() === dayIndex() && activePoint()}>
                {(point) => (
                  <div
                    data-component="chart-tooltip"
                    data-placement={dayIndex() > props.data.length * 0.62 ? "left" : "right"}
                  >
                    <strong>{point().date}</strong>
                    <span>{formatTokens(usageTotal(point()))} total</span>
                    <div data-slot="tooltip-divider" />
                    <For each={visibleTopModelsSegments(point())}>
                      {(item) => (
                        <p
                          data-active={props.activeModel === item.segment.model ? "true" : undefined}
                          data-muted={
                            props.activeModel !== undefined && props.activeModel !== item.segment.model
                              ? "true"
                              : undefined
                          }
                        >
                          <span data-slot="tooltip-label">
                            <i
                              style={{
                                background: getRankColor(item.segment.model, item.index, segmentOrder(), usageColors),
                              }}
                            />{" "}
                            {item.segment.model}
                          </span>
                          <b>{formatTokens(item.segment.value)}</b>
                        </p>
                      )}
                    </For>
                  </div>
                )}
              </Show>
            </div>
          )}
        </For>
      </div>
    </div>
  )
}

function isTopModelsBlankHover(bar: HTMLElement, clientY: number) {
  const stack = bar.querySelector<HTMLElement>('[data-slot="top-models-stack"]')
  if (!stack) return true
  return clientY < stack.getBoundingClientRect().top - 6
}

function getTopModelsBarHeight(total: number, max: number) {
  if (total <= 0) return 0
  return Math.max(2, Math.min(100, (total / max) * 100))
}

function getTopModelsMaxTotal(data: UsagePoint[]) {
  const max = Math.max(0, ...data.map((item) => usageTotal(item)))
  if (max === 0) return 1
  if (data.length === 1) return max * 1.75
  return max
}

function getTopModelsSegmentRows(point: UsagePoint, order: Map<string, number>) {
  const total = usageTotal(point)
  if (total <= 0) return ""
  return stackedTopModelsSegments(point, order)
    .map((item) => `${(item.segment.value / total) * 100}%`)
    .join(" ")
}

function visibleTopModelsSegments(point: UsagePoint) {
  return point.segments.map((segment, index) => ({ segment, index })).filter((item) => item.segment.value > 0)
}

function stackedTopModelsSegments(point: UsagePoint, order: Map<string, number>) {
  return visibleTopModelsSegments(point)
    .slice()
    .sort((a, b) => (order.get(b.segment.model) ?? b.index) - (order.get(a.segment.model) ?? a.index))
}

function getTopModelsSegmentOrder(data: UsagePoint[]) {
  return getRankOrder(
    data.flatMap((point) =>
      point.segments.map((segment, index) => ({ key: segment.model, value: segment.value, index })),
    ),
  )
}

function getTopModelsSegmentColor(
  model: string,
  index: number,
  order: Map<string, number>,
  muted: boolean,
  activeModel: string | undefined,
) {
  if (activeModel !== undefined)
    return activeModel === model ? getRankColor(model, index, order, usageColors) : "var(--stats-layer-2)"
  if (muted) return "var(--stats-layer-2)"
  return getRankColor(model, index, order, usageColors)
}

function isTopModelsMobileAxisHidden(index: number, count: number) {
  return count > 7 && index % 2 === 1
}

function isColumnLabelHidden(index: number, count: number) {
  if (count <= 20) return false
  const interval = Math.ceil(count / 8)
  return index !== count - 1 && index % interval !== 0
}

function isDenseColumnRange(range: UsageRange) {
  return range === "1M" || range === "2M"
}

function scrollDenseChartToEnd(element: HTMLDivElement | undefined, range: UsageRange, count: number) {
  if (!element || count <= 0 || !isDenseColumnRange(range) || typeof window === "undefined") return
  window.requestAnimationFrame(() => {
    element.scrollLeft = element.scrollWidth - element.clientWidth
  })
}

function formatTopModelsMobileDate(label: string, range: UsageRange) {
  if (range === "1M" || range === "2M") return label.split(" - ")[0] ?? label
  return label
}

function usageTotal(point: UsagePoint) {
  return point.segments.reduce((sum, item) => sum + item.value, 0)
}

function formatTokens(value: number) {
  if (value >= 1) return `${value.toFixed(value >= 10 ? 0 : 1)}T`
  return `${Math.round(value * 1000)}B`
}

function Leaderboard(props: {
  data: LeaderboardEntry[]
  activeModel: string | undefined
  onActiveModelChange: (model: string | undefined) => void
}) {
  const featured = createMemo(() => props.data.slice(0, 3))
  const columns = createMemo(() =>
    [0, 1, 2].map((index) => props.data.slice(3 + index * 5, 8 + index * 5)).filter((column) => column.length > 0),
  )

  return (
    <div id="leaderboard" data-component="leaderboard" role="list" aria-label="Model token leaderboard">
      <div data-slot="leaderboard-featured">
        <For each={featured()}>
          {(entry) => (
            <LeaderboardCard
              entry={entry}
              size="featured"
              active={props.activeModel === entry.model}
              onActiveModelChange={props.onActiveModelChange}
            />
          )}
        </For>
      </div>
      <div data-slot="leaderboard-pattern" aria-hidden="true" />
      <div data-slot="leaderboard-compact">
        <For each={columns()}>
          {(column) => (
            <div data-slot="leaderboard-column">
              <For each={column}>
                {(entry) => (
                  <LeaderboardCard
                    entry={entry}
                    size="compact"
                    active={props.activeModel === entry.model}
                    onActiveModelChange={props.onActiveModelChange}
                  />
                )}
              </For>
            </div>
          )}
        </For>
      </div>
      <div data-slot="leaderboard-mobile" aria-label="Scrollable model token leaderboard">
        <For each={props.data}>
          {(entry) => (
            <LeaderboardCard
              entry={entry}
              size="featured"
              active={props.activeModel === entry.model}
              onActiveModelChange={props.onActiveModelChange}
            />
          )}
        </For>
      </div>
    </div>
  )
}

function LeaderboardCard(props: {
  entry: LeaderboardEntry
  size: "featured" | "compact"
  active: boolean
  onActiveModelChange: (model: string | undefined) => void
}) {
  return (
    <a
      data-component="leader-card"
      data-size={props.size}
      data-active={props.active ? "true" : undefined}
      href={`${import.meta.env.BASE_URL}${modelSlug(props.entry.provider)}/${modelSlug(props.entry.model)}`}
      role="listitem"
      tabIndex={0}
      aria-label={`${String(props.entry.rank).padStart(2, "0")} ${props.entry.model} by ${props.entry.author}`}
      onPointerEnter={() => props.onActiveModelChange(props.entry.model)}
      onPointerLeave={(event) => {
        if (event.pointerType === "touch") return
        props.onActiveModelChange(undefined)
      }}
      onFocus={() => props.onActiveModelChange(props.entry.model)}
      onBlur={() => props.onActiveModelChange(undefined)}
      onClick={() => props.onActiveModelChange(props.entry.model)}
    >
      <span data-slot="rank">{String(props.entry.rank).padStart(2, "0")}</span>
      <ProviderIcon data-slot="leader-watermark" aria-hidden="true" id={getProviderIconId(props.entry.author)} />
      <div data-slot="leader-body">
        <ProviderIcon data-slot="leader-avatar" aria-hidden="true" id={getProviderIconId(props.entry.author)} />
        <div data-slot="leader-copy">
          <div>
            <strong>{props.entry.model}</strong>
            <span>{formatBillions(props.entry.tokens)}</span>
          </div>
          <div>
            <span>{props.entry.author}</span>
            <span
              data-slot="delta"
              data-new={props.entry.change === null ? "true" : undefined}
              data-negative={props.entry.change !== null && props.entry.change < 0 ? "true" : undefined}
            >
              {formatChange(props.entry.change)}
            </span>
          </div>
        </div>
      </div>
    </a>
  )
}

function getProviderIconId(author: string) {
  if (author === "MiniMax") return "minimax"
  if (author === "Moonshot") return "moonshotai"
  if (author === "Zhipu") return "zhipuai"
  return author.toLowerCase()
}

function formatBillions(value: number) {
  if (value >= 1000) return `${(value / 1000).toFixed(value >= 10000 ? 0 : 1)}T`
  return `${value}B`
}

function formatChange(value: number | null) {
  if (value === null) return "New"
  if (value > 0) return `+${value}%`
  return `${value}%`
}

function MarketShareSection(props: { data: StatsHomeData["market"] }) {
  const [range, setRange] = createSignal<UsageRange>("2M")
  const [activeIndex, setActiveIndex] = createSignal(2)
  const [activeAuthor, setActiveAuthor] = createSignal<string>()
  const [inspecting, setInspecting] = createSignal(false)
  const data = createMemo(() => props.data[range()])
  const authorOrder = createMemo(() => getMarketAuthorOrder(data()))
  const selectedIndex = createMemo(() => Math.min(activeIndex(), Math.max(data().length - 1, 0)))
  const activeDay = createMemo(() => data()[selectedIndex()])

  return (
    <section
      id="market-share"
      data-section="market-share"
      onPointerLeave={(event) => {
        if (event.pointerType === "touch") return
        setActiveAuthor(undefined)
        setInspecting(false)
      }}
    >
      <SectionBridge label="CACHE RATIO" href="#cache-ratio" />
      <SectionTitle title="Market Share" description="Compare token share by model author." />
      <Show
        when={activeDay()}
        fallback={<EmptyState title="No market data" description="No model_stat rows matched this range." />}
      >
        {(day) => (
          <>
            <MarketShare
              data={data()}
              range={range()}
              authorOrder={authorOrder()}
              activeIndex={selectedIndex()}
              activeAuthor={activeAuthor()}
              inspecting={inspecting()}
              onActiveIndexChange={(index) => {
                setActiveIndex(index)
                setInspecting(true)
              }}
              onActiveAuthorChange={(author) => {
                setActiveAuthor(author)
                setInspecting(true)
              }}
            />
            <MarketShareList
              data={day().authors}
              authorOrder={authorOrder()}
              activeAuthor={activeAuthor()}
              onActiveAuthorChange={(author) => {
                setActiveAuthor(author)
                setInspecting(true)
              }}
            />
          </>
        )}
      </Show>
      <div data-slot="market-footer">
        <p>
          <span>[*]</span>
          <strong>{inspecting() ? formatMarketDate(activeDay()) : formatMarketRange(data())}</strong>
        </p>
        <div hidden>
          <FilterPills
            items={ranges}
            selected={range()}
            label="Date range"
            variant="range"
            onSelect={(item) => {
              setRange(item)
              setActiveAuthor(undefined)
              setInspecting(false)
            }}
          />
        </div>
      </div>
    </section>
  )
}

function MarketShare(props: {
  data: MarketDay[]
  range: UsageRange
  authorOrder: Map<string, number>
  activeIndex: number
  activeAuthor: string | undefined
  inspecting: boolean
  onActiveIndexChange: (index: number) => void
  onActiveAuthorChange: (author: string) => void
}) {
  let chartRef: HTMLDivElement | undefined

  createEffect(() => scrollDenseChartToEnd(chartRef, props.range, props.data.length))

  return (
    <div
      ref={chartRef}
      data-component="market-share"
      data-range={props.range}
      data-dense-labels={isDenseColumnRange(props.range) ? "true" : undefined}
      role="img"
      aria-label="Market share by model author"
      style={{ "--market-count": props.data.length } as JSX.CSSProperties}
    >
      <div data-slot="market-labels">
        <For each={props.data}>
          {(day, index) => (
            <button
              type="button"
              data-active={props.inspecting && props.activeIndex === index() ? "true" : undefined}
              data-label-hidden={isColumnLabelHidden(index(), props.data.length) ? "true" : undefined}
              data-mobile-hidden={isMarketMobileLabelHidden(index(), props.data.length) ? "true" : undefined}
              onClick={() => props.onActiveIndexChange(index())}
              onPointerEnter={() => props.onActiveIndexChange(index())}
            >
              <span data-slot="market-axis-label">
                <span data-slot="market-total">{formatTrillions(day.total)}</span>
                <span data-slot="market-date">
                  <span data-slot="market-date-full">{day.date}</span>
                  <span data-slot="market-date-mobile">{formatMarketMobileDate(day.date)}</span>
                </span>
              </span>
            </button>
          )}
        </For>
      </div>
      <div data-slot="market-bars">
        <For each={props.data}>
          {(day, index) => (
            <button
              type="button"
              aria-label={`${day.date} ${formatTrillions(day.total)}`}
              data-active={props.inspecting && props.activeIndex === index() ? "true" : undefined}
              onClick={() => props.onActiveIndexChange(index())}
              onPointerEnter={() => props.onActiveIndexChange(index())}
            >
              <For each={stackedMarketAuthors(day, props.authorOrder)}>
                {(item) => (
                  <span
                    data-author={item.author.author}
                    data-active={props.activeAuthor === item.author.author ? "true" : undefined}
                    data-muted={
                      props.activeAuthor !== undefined && props.activeAuthor !== item.author.author ? "true" : undefined
                    }
                    style={{
                      "background-color": getMarketSegmentColor(
                        item.author.author,
                        getRankColor(item.author.author, item.index, props.authorOrder, marketColors),
                        props.activeAuthor,
                      ),
                      "flex-grow": item.author.share,
                    }}
                    onPointerEnter={(event) => {
                      event.stopPropagation()
                      props.onActiveIndexChange(index())
                      props.onActiveAuthorChange(item.author.author)
                    }}
                    onPointerDown={(event) => {
                      event.stopPropagation()
                      props.onActiveIndexChange(index())
                      props.onActiveAuthorChange(item.author.author)
                    }}
                    onClick={(event) => {
                      event.stopPropagation()
                      props.onActiveIndexChange(index())
                      props.onActiveAuthorChange(item.author.author)
                    }}
                  />
                )}
              </For>
            </button>
          )}
        </For>
      </div>
    </div>
  )
}

function MarketShareList(props: {
  data: MarketDay["authors"]
  authorOrder: Map<string, number>
  activeAuthor: string | undefined
  onActiveAuthorChange: (author: string) => void
}) {
  return (
    <ol data-component="market-share-list">
      <For each={props.data}>
        {(item, index) => (
          <li
            role="button"
            tabIndex={0}
            aria-label={`${item.author} ${formatTrillions(item.tokens)} ${item.share.toFixed(1)} percent`}
            data-active={props.activeAuthor === item.author ? "true" : undefined}
            onPointerEnter={() => props.onActiveAuthorChange(item.author)}
            onFocus={() => props.onActiveAuthorChange(item.author)}
            onKeyDown={(event) => {
              if (event.key !== "Enter" && event.key !== " ") return
              event.preventDefault()
              props.onActiveAuthorChange(item.author)
            }}
          >
            <span>{String(index() + 1).padStart(2, "0")}</span>
            <i style={{ background: getRankColor(item.author, index(), props.authorOrder, marketColors) }} />
            <strong>{item.author}</strong>
            <em>{formatTrillions(item.tokens)}</em>
            <b>{item.share.toFixed(1)}%</b>
          </li>
        )}
      </For>
    </ol>
  )
}

function GeoBreakdownSection(props: { data: StatsHomeData["country"] }) {
  const [activeCountry, setActiveCountry] = createSignal<string>()
  const data = createMemo(() => props.data["2M"])
  const countryById = createMemo(
    () =>
      new Map(
        data().flatMap((country) => {
          const id = countryNumericId(country.country)
          return id ? [[id, country] as const] : []
        }),
      ),
  )
  const maxTokens = createMemo(() => Math.max(0, ...data().map((country) => country.tokens)) || 1)
  const topCountries = createMemo(() => data().slice(0, 15))
  const active = createMemo(() => data().find((country) => country.country === activeCountry()) ?? data()[0])

  return (
    <section
      id="geo-breakdown"
      data-section="geo-breakdown"
      onPointerLeave={(event) => {
        if (event.pointerType === "touch") return
        setActiveCountry(undefined)
      }}
    >
      <SectionBridge label="MARKET SHARE" href="#market-share" />
      <SectionTitle title="Geo Breakdown" description="Tokens used by country." />
      <Show
        when={data().length > 0}
        fallback={<EmptyState title="No geo data" description="No geo_stat rows matched this range." />}
      >
        <div data-component="geo-breakdown">
          <div data-slot="geo-map-panel">
            <GeoWorldMap
              countryById={countryById()}
              activeCountry={activeCountry()}
              maxTokens={maxTokens()}
              onActiveCountryChange={setActiveCountry}
            />
            <Show when={active()}>
              {(country) => (
                <div data-slot="geo-active-country">
                  <span>#{String(country().rank).padStart(2, "0")}</span>
                  <strong>{formatCountryName(country().country)}</strong>
                  <p>
                    <b>{formatGeoTokens(country().tokens)}</b>
                    <em>{formatGeoShare(country().share)}</em>
                  </p>
                </div>
              )}
            </Show>
          </div>
          <GeoCountryList
            data={topCountries()}
            activeCountry={activeCountry()}
            maxTokens={maxTokens()}
            onActiveCountryChange={setActiveCountry}
          />
        </div>
      </Show>
    </section>
  )
}

function GeoWorldMap(props: {
  countryById: Map<string, CountryEntry>
  activeCountry: string | undefined
  maxTokens: number
  onActiveCountryChange: (country: string | undefined) => void
}) {
  const opacityScale = createMemo(() => scaleSqrt().domain([0, props.maxTokens]).range([0.26, 0.96]).clamp(true))
  const countryOpacity = (country: CountryEntry | undefined) => {
    if (!country) return 0
    const opacity = opacityScale()(country.tokens)
    if (!props.activeCountry || props.activeCountry === country.country) return opacity
    return Math.max(0.18, opacity * 0.36)
  }

  return (
    <svg
      data-component="geo-world-map"
      viewBox={`0 0 ${geoMapWidth} ${geoMapHeight}`}
      role="img"
      aria-label="World map of token usage by country"
    >
      <title>Geo Breakdown map</title>
      <g data-slot="geo-countries">
        <For each={worldCountryPaths}>
          {(country) => {
            const entry = () => props.countryById.get(country.id)
            return (
              <path
                d={country.path}
                data-has-data={entry() ? "true" : undefined}
                data-active={entry()?.country === props.activeCountry ? "true" : undefined}
                style={{ "--geo-country-opacity": String(countryOpacity(entry())) } as JSX.CSSProperties}
                aria-hidden="true"
                onPointerEnter={() => {
                  const item = entry()
                  if (!item) return
                  props.onActiveCountryChange(item.country)
                }}
                onClick={() => {
                  const item = entry()
                  if (!item) return
                  props.onActiveCountryChange(item.country)
                }}
              />
            )
          }}
        </For>
      </g>
      <path data-slot="geo-borders" d={worldBorderPath} aria-hidden="true" />
    </svg>
  )
}

function GeoCountryList(props: {
  data: CountryEntry[]
  activeCountry: string | undefined
  maxTokens: number
  onActiveCountryChange: (country: string | undefined) => void
}) {
  const opacityScale = createMemo(() => scaleSqrt().domain([0, props.maxTokens]).range([0.26, 0.96]).clamp(true))

  return (
    <ol data-component="geo-country-list">
      <For each={props.data}>
        {(country) => (
          <li>
            <button
              type="button"
              data-active={props.activeCountry === country.country ? "true" : undefined}
              style={{ "--geo-row-opacity": String(opacityScale()(country.tokens)) } as JSX.CSSProperties}
              aria-label={`${formatCountryName(country.country)} ${formatGeoTokens(country.tokens)} ${formatGeoShare(
                country.share,
              )}`}
              onClick={() => props.onActiveCountryChange(country.country)}
              onPointerEnter={() => props.onActiveCountryChange(country.country)}
              onFocus={() => props.onActiveCountryChange(country.country)}
            >
              <span>{String(country.rank).padStart(2, "0")}</span>
              <i />
              <strong>{formatCountryName(country.country)}</strong>
              <em>{formatGeoTokens(country.tokens)}</em>
              <b>{formatGeoShare(country.share)}</b>
            </button>
          </li>
        )}
      </For>
    </ol>
  )
}

function countryNumericId(country: string) {
  return countryNumericIds.get(country.toUpperCase())?.padStart(3, "0")
}

function formatCountryName(country: string) {
  const code = country.toUpperCase()
  if (code === "ZZ") return "Unknown"
  if (!countryNumericId(code)) return code
  return countryDisplayNames.of(code) ?? code
}

function formatGeoTokens(value: number) {
  if (value >= 1) return formatTrillions(value)
  if (value >= 0.001) return `${Number((value * 1000).toFixed(value >= 0.01 ? 0 : 1))}B`
  return `${Math.round(value * 1_000_000)}M`
}

function formatGeoShare(value: number) {
  return `${value.toFixed(value > 0 && value < 1 ? 1 : 0)}%`
}

function getMarketSegmentColor(author: string, color: string, activeAuthor: string | undefined) {
  if (!activeAuthor) return color
  if (activeAuthor === author) return color
  return "var(--stats-bar-idle)"
}

function stackedMarketAuthors(day: MarketDay, order: Map<string, number>) {
  return day.authors
    .map((author, index) => ({ author, index }))
    .slice()
    .sort((a, b) => (order.get(b.author.author) ?? b.index) - (order.get(a.author.author) ?? a.index))
}

function getMarketAuthorOrder(data: MarketDay[]) {
  return getRankOrder(
    data.flatMap((day) => day.authors.map((author, index) => ({ key: author.author, value: author.tokens, index }))),
  )
}

function getRankOrder(items: { key: string; value: number; index: number }[]) {
  return new Map<string, number>(
    Object.values(
      items.reduce<Record<string, { key: string; value: number; index: number }>>((result, item) => {
        result[item.key] = {
          key: item.key,
          value: (result[item.key]?.value ?? 0) + item.value,
          index: Math.min(result[item.key]?.index ?? item.index, item.index),
        }
        return result
      }, {}),
    )
      .toSorted((a, b) => b.value - a.value || a.index - b.index || a.key.localeCompare(b.key))
      .map((item, index) => [item.key, index] as const),
  )
}

function getRankColor(key: string, fallbackIndex: number, order: Map<string, number>, colors: readonly string[]) {
  return colors[order.get(key) ?? fallbackIndex] ?? "var(--stats-text)"
}

function isMarketMobileLabelHidden(index: number, count: number) {
  return count > 7 && index % 2 === 1
}

function formatMarketMobileDate(label: string) {
  return marketDateParts(label).start
}

function formatTrillions(value: number) {
  return `${value.toFixed(value >= 10 ? 0 : 1)}T`
}

function formatMarketDate(day: MarketDay | undefined) {
  if (!day) return "No data"
  return formatMarketDateLabel(day.date)
}

function formatMarketRange(data: MarketDay[]) {
  const first = data[0]?.date
  const last = data[data.length - 1]?.date
  if (!first || !last) return "No data"
  const start = marketDateParts(first).start
  const end = marketDateParts(last).end
  if (start === end) return formatMarketDateLabel(start)
  return `${start} ${new Date().getFullYear()} → ${end} ${new Date().getFullYear()}`
}

function formatMarketDateLabel(label: string) {
  const parts = marketDateParts(label)
  const year = new Date().getFullYear()
  if (parts.start === parts.end) return `${parts.start} ${year}`
  return `${parts.start} ${year} → ${parts.end} ${year}`
}

function marketDateParts(label: string) {
  const [start, end] = label.split(" - ")
  return { start: start ?? label, end: end ?? start ?? label }
}

function TokenCostSection(props: { data: StatsHomeData["tokenCost"] }) {
  const [product, setProduct] = createSignal<TokenProduct>("Go")
  const [activeIndex, setActiveIndex] = createSignal(2)
  const data = createMemo(() => props.data[product()])
  const visible = createMemo(() => data().slice(0, 13))
  const selectedIndex = createMemo(() => Math.min(activeIndex(), Math.max(visible().length - 1, 0)))

  return (
    <section id="token-cost" data-section="token-cost">
      <SectionBridge label="SESSION COST" href="#session-cost" />
      <SectionTitle title="Token Cost" description="Price per 1M tokens." />
      <Show
        when={visible().length > 0}
        fallback={
          <EmptyState title="No token cost data" description="No cost-bearing model_stat rows matched this product." />
        }
      >
        <TokenCostChart data={visible()} activeIndex={selectedIndex()} onActiveIndexChange={setActiveIndex} />
      </Show>
      <div data-slot="token-footer" hidden>
        <FilterPills
          items={tokenProducts}
          selected={product()}
          label="Product filter"
          variant="product"
          onSelect={setProduct}
        />
        <LiveIndicator />
      </div>
    </section>
  )
}

function TokenCostChart(props: {
  data: TokenCostEntry[]
  activeIndex: number
  onActiveIndexChange: (index: number) => void
}) {
  const max = createMemo(() => Math.max(0, ...props.data.map((item) => item.total)) || 1)
  const active = createMemo(() => props.data[props.activeIndex] ?? props.data[0])

  return (
    <div data-component="token-cost">
      <For each={props.data}>
        {(item, index) => (
          <button
            type="button"
            data-component="token-row"
            data-active={props.activeIndex === index() ? "true" : undefined}
            onClick={() => props.onActiveIndexChange(index())}
            onPointerEnter={() => props.onActiveIndexChange(index())}
          >
            <strong>{formatDollars(item.total)}</strong>
            <span>{item.model}</span>
            <MetricBar value={item.total} max={max()} active={props.activeIndex === index()} />
          </button>
        )}
      </For>
      <Show when={active()}>
        {(item) => (
          <div data-component="token-tooltip" style={{ top: `${props.activeIndex * 36 + 2}px` }}>
            <p>
              <span>Input</span>
              <strong>{formatDollars(item().input)}</strong>
            </p>
            <p>
              <span>Output</span>
              <strong>{formatDollars(item().output)}</strong>
            </p>
            <p>
              <span>Cached</span>
              <strong>{formatDollars(item().cached)}</strong>
            </p>
          </div>
        )}
      </Show>
    </div>
  )
}

function CacheRatioSection(props: { data: StatsHomeData["cacheRatio"] }) {
  const [product, setProduct] = createSignal<TokenProduct>("Go")
  const [activeIndex, setActiveIndex] = createSignal(2)
  const data = createMemo(() => props.data[product()])
  const visible = createMemo(() => data().slice(0, 16))
  const selectedIndex = createMemo(() => Math.min(activeIndex(), Math.max(visible().length - 1, 0)))

  return (
    <section id="cache-ratio" data-section="cache-ratio">
      <SectionBridge label="TOKEN COST" href="#token-cost" />
      <SectionTitle title="Cache Ratio" description="Share of input tokens served from cache." />
      <Show
        when={visible().length > 0}
        fallback={
          <EmptyState title="No cache ratio data" description="No input-token model_stat rows matched this product." />
        }
      >
        <CacheRatioChart data={visible()} activeIndex={selectedIndex()} onActiveIndexChange={setActiveIndex} />
      </Show>
      <div data-slot="token-footer" hidden>
        <FilterPills
          items={tokenProducts}
          selected={product()}
          label="Product filter"
          variant="product"
          onSelect={setProduct}
        />
        <LiveIndicator />
      </div>
    </section>
  )
}

function CacheRatioChart(props: {
  data: CacheRatioEntry[]
  activeIndex: number
  onActiveIndexChange: (index: number) => void
}) {
  const active = createMemo(() => props.data[props.activeIndex] ?? props.data[0])

  return (
    <div data-component="cache-ratio" data-variant="marker">
      <div data-slot="cache-ratio-heading" aria-hidden="true">
        <strong>Ratio</strong>
        <span>Model</span>
        <b>0-100%</b>
      </div>
      <div data-slot="cache-ratio-rows">
        <For each={props.data}>
          {(item, index) => (
            <button
              type="button"
              data-component="cache-ratio-row"
              data-active={props.activeIndex === index() ? "true" : undefined}
              onClick={() => props.onActiveIndexChange(index())}
              onPointerEnter={() => props.onActiveIndexChange(index())}
            >
              <strong>{formatRatio(item.ratio)}</strong>
              <span>{item.model}</span>
              <CacheRatioMarker ratio={item.ratio} active={props.activeIndex === index()} />
            </button>
          )}
        </For>
      </div>
      <Show when={active()}>
        {(item) => (
          <div
            data-component="token-tooltip"
            data-variant="cache-ratio"
            style={{ top: `${props.activeIndex * 36 + 28}px` }}
          >
            <p>
              <span>Cache Ratio</span>
              <strong>{formatRatio(item().ratio)}</strong>
            </p>
            <p>
              <span>Cached</span>
              <strong>{formatBillions(item().cached)}</strong>
            </p>
            <p>
              <span>Uncached</span>
              <strong>{formatBillions(item().uncached)}</strong>
            </p>
          </div>
        )}
      </Show>
    </div>
  )
}

function CacheRatioMarker(props: { ratio: number; active: boolean }) {
  const fill = createMemo(() => Math.min(100, Math.max(0, props.ratio)))
  return (
    <i
      data-component="cache-ratio-marker"
      data-active={props.active ? "true" : undefined}
      style={{ "--cache-ratio-fill": `${fill()}%` } as JSX.CSSProperties}
    >
      <em />
    </i>
  )
}

function formatRatio(value: number) {
  return `${value.toFixed(value > 0 && value < 10 ? 1 : 0)}%`
}

function formatDollars(value: number) {
  return `$${value.toFixed(2)}`
}

function MetricBar(props: { value: number; max: number; active: boolean }) {
  const fill = createMemo(() => Math.min(1, Math.max(props.value / props.max, props.value > 0 ? 0.03 : 0)))
  return (
    <i
      data-component="metric-bar"
      data-active={props.active ? "true" : undefined}
      style={{ "--metric-bar-fill": `${fill() * 100}%` } as JSX.CSSProperties}
    >
      <b />
      <em />
    </i>
  )
}

function SessionCostSection(props: { data: StatsHomeData["sessionCost"] }) {
  const [product, setProduct] = createSignal<TokenProduct>("Go")
  const [activeIndex, setActiveIndex] = createSignal(2)
  const data = createMemo(() => props.data[product()])
  const visible = createMemo(() => data().slice(0, 16))
  const selectedIndex = createMemo(() => Math.min(activeIndex(), Math.max(visible().length - 1, 0)))

  return (
    <section id="session-cost" data-section="session-cost">
      <SectionBridge label="TOP MODELS" href="#top-models" />
      <SectionTitle title="Session Cost" description="Average cost per session." />
      <Show
        when={visible().length > 0}
        fallback={
          <EmptyState
            title="No session cost data"
            description="No session-bearing model_stat rows matched this product."
          />
        }
      >
        <SessionCostChart data={visible()} activeIndex={selectedIndex()} onActiveIndexChange={setActiveIndex} />
      </Show>
      <div data-slot="token-footer" hidden>
        <FilterPills
          items={tokenProducts}
          selected={product()}
          label="Product filter"
          variant="product"
          onSelect={setProduct}
        />
        <LiveIndicator />
      </div>
    </section>
  )
}

function SessionCostChart(props: {
  data: SessionCostEntry[]
  activeIndex: number
  onActiveIndexChange: (index: number) => void
}) {
  const maxCost = createMemo(() => Math.max(0, ...props.data.map((item) => item.cost)) || 1)
  const maxTokens = createMemo(() => Math.max(0, ...props.data.map((item) => item.tokens)) || 1)
  const active = createMemo(() => props.data[props.activeIndex] ?? props.data[0])

  return (
    <div data-component="session-cost">
      <div data-slot="session-heading">
        <strong aria-hidden="true" />
        <span aria-hidden="true" />
        <p>COST / SESSION</p>
        <p>TOKENS / SESSION</p>
      </div>
      <For each={props.data}>
        {(item, index) => (
          <button
            type="button"
            data-component="token-row"
            data-variant="session"
            data-active={props.activeIndex === index() ? "true" : undefined}
            onClick={() => props.onActiveIndexChange(index())}
            onPointerEnter={() => props.onActiveIndexChange(index())}
          >
            <strong>{formatSessionCost(item.cost)}</strong>
            <span>{item.model}</span>
            <MetricBar value={item.cost} max={maxCost()} active={props.activeIndex === index()} />
            <MetricBar value={item.tokens} max={maxTokens()} active={props.activeIndex === index()} />
          </button>
        )}
      </For>
      <Show when={active()}>
        {(item) => (
          <div
            data-component="token-tooltip"
            data-variant="session"
            style={{ top: `${props.activeIndex * 36 + 28}px` }}
          >
            <p>
              <span>Cost/Session</span>
              <strong>{formatSessionCost(item().cost)}</strong>
            </p>
            <p>
              <span>Tokens/Session</span>
              <strong>{formatTokenCount(item().tokens)}</strong>
            </p>
          </div>
        )}
      </Show>
    </div>
  )
}

function LiveIndicator() {
  return <span data-component="live-filter">Live</span>
}

function formatTokenCount(value: number) {
  if (value >= 1_000_000) return `${Number((value / 1_000_000).toFixed(1))}M`
  return `${Math.round(value / 1_000)}K`
}

function formatSessionCost(value: number) {
  return `$${value.toFixed(4)}`
}

function modelSlug(value: string) {
  return value
    .trim()
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, "-")
    .replace(/^-+|-+$/g, "")
    .replace(/-{2,}/g, "-")
}
