TypeScript 55.4%
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1"use client";23import Link from "next/link";4import { useEffect, useRef, useState } from "react";5import type { Stats } from "@/lib/api";6import { fmtInt, relTime } from "@/lib/format";7import { publicFetch } from "@/lib/owner";89/**10 * Live system strip (spec §65): SOURCES · SENSORS · CHECKS/MIN · EVENTS 24H · BREAKING · SILENT · STATUS.11 * Server-rendered with real values, then refreshed every 10 s. Numbers tick when they change.12 */13export function LiveStrip({ initial }: { initial: Stats }) {14 const [s, setS] = useState<Stats>(initial);15 const [now, setNow] = useState(() => Date.now());16 useEffect(() => {17 const tick = (): void => {18 publicFetch<Stats>("/api/v1/stats").then(setS).catch(() => undefined);19 setNow(Date.now());20 };21 const t = setInterval(tick, 10_000);22 const n = setInterval(() => setNow(Date.now()), 1000);23 return () => {24 clearInterval(t);25 clearInterval(n);26 };27 }, []);28 const lastCheckAge = s.last_check_at ? now - new Date(s.last_check_at).getTime() : Infinity;29 const live = lastCheckAge < 120_000;30 // `now` differs between server and client renders; the status word is re-rendered right after mount.31 const items: { label: string; value: number | undefined; href?: string; tone?: string; hint?: string }[] = [32 { label: "Sources", value: s.sources, href: "/sources", hint: `${fmtInt(s.sources_first_party)} first-party` },33 { label: "Sensors", value: s.sensors, href: "/health", hint: s.sensors_degraded ? `${fmtInt(s.sensors_degraded)} degraded` : "all healthy" },34 { label: "Checks / min", value: s.checks_per_min, href: "/health", hint: s.not_modified_ratio_5m !== null && s.not_modified_ratio_5m !== undefined ? `${Math.round(s.not_modified_ratio_5m * 100)}% 304` : undefined },35 { label: "Events 24h", value: s.events_24h, href: "/live", hint: s.events_per_min !== undefined ? `${s.events_per_min}/min` : undefined },36 { label: "Breaking", value: s.breaking_now ?? s.breaking_24h, href: "/breaking", tone: "text-hot", hint: s.developing_now ? `${s.developing_now} developing` : undefined },37 { label: "Silent 24h", value: s.silent_24h, href: "/silent", tone: "text-silent" },38 ];39 return (40 <div className="panel mb-4 flex items-stretch overflow-x-auto no-scrollbar" role="region" aria-label="Live system status">41 {items.map((it) => (42 <Cell key={it.label} {...it} />43 ))}44 <div className="ml-auto flex min-w-[7.5rem] flex-col justify-center gap-0.5 border-l border-line px-3 py-2">45 <span className="label">Status</span>46 <span className="inline-flex items-center gap-1.5 font-mono text-[12px] font-semibold tracking-wider" suppressHydrationWarning>47 <span className={`inline-block size-2 rounded-full ${live ? "bg-signal animate-pulse-dot" : "bg-warn"}`} />48 {live ? "LIVE" : "STALE"}49 </span>50 <span className="truncate text-[10.5px] text-fg-subtle" suppressHydrationWarning>{s.last_check_at ? `last check ${relTime(s.last_check_at, now)}` : "—"}</span>51 </div>52 </div>53 );54}5556function Cell({ label, value, href, tone, hint }: { label: string; value: number | undefined; href?: string; tone?: string; hint?: string }) {57 const prev = useRef(value);58 const [tick, setTick] = useState(false);59 useEffect(() => {60 if (prev.current !== value) {61 prev.current = value;62 setTick(true);63 const t = setTimeout(() => setTick(false), 600);64 return () => clearTimeout(t);65 }66 }, [value]);67 const body = (68 <>69 <span className="label">{label}</span>70 <span className={`font-mono text-lg font-semibold leading-tight tabular ${tone ?? ""} ${tick ? "animate-tick" : ""}`}>{fmtInt(value)}</span>71 {hint && <span className="truncate text-[10.5px] text-fg-subtle">{hint}</span>}72 </>73 );74 const cls = "flex min-w-[7.25rem] flex-col gap-0.5 border-r border-line px-3 py-2 last:border-r-0";75 return href ? <Link href={href} className={`${cls} hover:bg-panel-2/60`}>{body}</Link> : <div className={cls}>{body}</div>;76}77