spb/autoscholar

1import { DISCIPLINE_LABELS, RESEARCH_MODE_LABELS } from "@autoscholar/schemas";23export function fmtDate(4  d: string | Date | null | undefined,5  opts: Intl.DateTimeFormatOptions = { year: "numeric", month: "long", day: "numeric" },6): string {7  if (!d) return "—";8  return new Intl.DateTimeFormat("en-CA", { timeZone: "UTC", ...opts }).format(new Date(d));9}10export function fmtDateTime(d: string | Date | null | undefined): string {11  if (!d) return "—";12  return new Intl.DateTimeFormat("en-CA", {13    year: "numeric",14    month: "short",15    day: "numeric",16    hour: "2-digit",17    minute: "2-digit",18    second: "2-digit",19    hour12: false,20  }).format(new Date(d));21}22export function ago(d: string | Date | null | undefined): string {23  if (!d) return "never";24  const s = Math.max(0, (Date.now() - new Date(d).getTime()) / 1000);25  if (s < 60) return `${Math.round(s)}s ago`;26  if (s < 3600) return `${Math.round(s / 60)}m ago`;27  if (s < 86400) return `${Math.round(s / 3600)}h ago`;28  return `${Math.round(s / 86400)}d ago`;29}30export function fmtBytes(n: number): string {31  if (n < 1024) return `${n} B`;32  if (n < 1024 ** 2) return `${(n / 1024).toFixed(1)} KB`;33  if (n < 1024 ** 3) return `${(n / 1024 ** 2).toFixed(1)} MB`;34  return `${(n / 1024 ** 3).toFixed(2)} GB`;35}36export function fmtUsd(n: number | string | null | undefined): string {37  return `$${Number(n ?? 0).toFixed(2)}`;38}39export function disciplineLabel(d: string): string {40  return (DISCIPLINE_LABELS as Record<string, string>)[d] ?? d;41}42export function modeLabel(m: string): string {43  return (RESEARCH_MODE_LABELS as Record<string, string>)[m] ?? m;44}45export function shortHash(h: string | null | undefined, n = 12): string {46  return h ? h.slice(0, n) : "—";47}48