chore: initial project import

web/shared/format.ts

@@ -0,0 +1,51 @@
+export function fmtMs(v: number | null | undefined, digits = 1): string {
+  if (v === null || v === undefined || Number.isNaN(v)) return '—'
+  if (v >= 1000) return `${(v / 1000).toFixed(2)} s`
+  return `${v.toFixed(v >= 100 ? 0 : digits)} ms`
+}
+
+export function fmtPct(v: number | null | undefined, digits = 2): string {
+  if (v === null || v === undefined || Number.isNaN(v)) return '—'
+  return `${v.toFixed(v >= 10 ? 1 : digits)}%`
+}
+
+export function fmtMbps(v: number | null | undefined): string {
+  if (v === null || v === undefined || Number.isNaN(v)) return '—'
+  return v >= 100 ? `${v.toFixed(0)} Mbit/s` : `${v.toFixed(1)} Mbit/s`
+}
+
+export function fmtNum(v: number | null | undefined, digits = 0): string {
+  if (v === null || v === undefined || Number.isNaN(v)) return '—'
+  return v.toLocaleString('zh-CN', { maximumFractionDigits: digits })
+}
+
+export function fmtTime(iso: string | null | undefined): string {
+  if (!iso) return '—'
+  const d = new Date(iso)
+  return d.toLocaleString('zh-CN', { hour12: false, month: '2-digit', day: '2-digit', hour: '2-digit', minute: '2-digit', second: '2-digit' })
+}
+
+export function fmtAgo(iso: string | null | undefined): string {
+  if (!iso) return '—'
+  const seconds = Math.max(0, (Date.now() - new Date(iso).getTime()) / 1000)
+  if (seconds < 60) return `${Math.floor(seconds)} 秒前`
+  if (seconds < 3600) return `${Math.floor(seconds / 60)} 分钟前`
+  if (seconds < 86400) return `${Math.floor(seconds / 3600)} 小时前`
+  return `${Math.floor(seconds / 86400)} 天前`
+}
+
+export function fmtDuration(ms: number): string {
+  const s = Math.floor(ms / 1000)
+  if (s < 60) return `${s} 秒`
+  if (s < 3600) return `${Math.floor(s / 60)} 分钟`
+  if (s < 86400) return `${Math.floor(s / 3600)} 小时 ${Math.floor((s % 3600) / 60)} 分钟`
+  return `${Math.floor(s / 86400)} 天 ${Math.floor((s % 86400) / 3600)} 小时`
+}
+
+/** 评分 → 状态色（和后端模型的分档一致：≥85 好，≥60 一般，其余差）。 */
+export function scoreTone(score: number | null | undefined): 'ok' | 'warn' | 'bad' | '' {
+  if (score === null || score === undefined) return ''
+  if (score >= 85) return 'ok'
+  if (score >= 60) return 'warn'
+  return 'bad'
+}