"use client"; import type { HTMLAttributes, KeyboardEvent } from "react"; import { useId, useRef, useState } from "react"; import { motion, useReducedMotion } from "motion/react"; export type DashboardMetric = { id: string; label: string; value: string; delta: string; note: string; /** Chronological values for the bar chart. When omitted, a trend is derived from the metric. */ series?: number[]; }; type LiveDashboardCardProps = HTMLAttributes & { title?: string; metrics: DashboardMetric[]; activeId?: string; defaultActiveId?: string; onActiveIdChange?: (id: string) => void; /** Rendered as "Updated {updatedAt}" only when provided, e.g. "09:42 UTC". */ updatedAt?: string; reducedMotion?: boolean; }; const fallbackLength = 10; function deriveSeries(metric: DashboardMetric) { if (metric.series && metric.series.length > 0) return metric.series; const delta = Number.parseFloat(metric.delta.replace(/[^0-9.+-]/g, "")) || 0; const seed = Array.from(metric.id + metric.value).reduce((sum, char) => sum + char.charCodeAt(0), 0); return Array.from({ length: fallbackLength }, (_, index) => { const trend = (index - (fallbackLength - 1)) * delta; const wobble = ((seed * (index + 3)) % 23) - 11; return Math.max(1, 100 + trend + wobble); }); } function toHeights(series: number[]) { const min = Math.min(...series); const max = Math.max(...series); if (max === min) return series.map(() => 60); return series.map((value) => Math.round(12 + ((value - min) / (max - min)) * 88)); } export function LiveDashboardCard({ title = "Operations pulse", metrics, activeId, defaultActiveId, onActiveIdChange, updatedAt, reducedMotion, className = "", ...props }: LiveDashboardCardProps) { const systemReducedMotion = useReducedMotion(); const reduceMotion = Boolean(reducedMotion || systemReducedMotion); const uid = useId(); const tabs = useRef>([]); const [internalId, setInternalId] = useState(defaultActiveId ?? metrics[0]?.id ?? ""); const selectedId = activeId ?? internalId; const selected = metrics.find((metric) => metric.id === selectedId) ?? metrics[0]; const select = (id: string) => { if (activeId === undefined) setInternalId(id); onActiveIdChange?.(id); }; const onTabKeyDown = (event: KeyboardEvent, index: number) => { const last = metrics.length - 1; let next = -1; if (event.key === "ArrowDown" || event.key === "ArrowRight") next = index >= last ? 0 : index + 1; else if (event.key === "ArrowUp" || event.key === "ArrowLeft") next = index <= 0 ? last : index - 1; else if (event.key === "Home") next = 0; else if (event.key === "End") next = last; const target = metrics[next]; if (!target) return; event.preventDefault(); select(target.id); tabs.current[next]?.focus(); }; if (!selected) return null; const series = deriveSeries(selected); const heights = toHeights(series); return (

{title}

{updatedAt ?

Updated {updatedAt}

: null}

{metrics.map((metric, index) => { const isSelected = metric.id === selected.id; return ( ); })}

{selected.label}

{selected.value}

{selected.delta} vs. previous period

{selected.note}

); }

Platform health

Platform health