chore: initialize lhbfx project and documentation

frontend/src/utils/format.ts

@@ -0,0 +1,69 @@
+export function warningLabel(type: string): string {
+  if (type === 'sell_alert') return '卖出预警'
+  if (type === 'slow_exit_watch') return '慢流出观察'
+  return type || '提醒'
+}
+
+export function warningTone(level: string): 'red' | 'orange' | 'gold' {
+  if (level === 'high') return 'red'
+  if (level === 'medium') return 'orange'
+  return 'gold'
+}
+
+export function priceTone(value: string | null | undefined): 'rise' | 'fall' | 'flat' {
+  if (!value) return 'flat'
+  if (String(value).startsWith('-')) return 'fall'
+  if (String(value).startsWith('+') || Number(value) > 0) return 'rise'
+  return 'flat'
+}
+
+export function numberFromText(value: string | number | null | undefined): number | null {
+  if (value === null || value === undefined || value === '') return null
+  if (typeof value === 'number') return value
+
+  const trimmed = value.replace(/,/g, '').trim()
+  if (!trimmed) return null
+
+  let multiplier = 1
+  if (trimmed.includes('亿')) multiplier = 100000000
+  else if (trimmed.includes('万')) multiplier = 10000
+
+  const normalized = trimmed.replace('%', '').replace('亿', '').replace('万', '')
+  const parsed = Number(normalized)
+  return Number.isNaN(parsed) ? null : parsed * multiplier
+}
+
+export function compactMoney(value: string | number | null | undefined): string {
+  const parsed = numberFromText(value)
+  if (parsed === null) return '-'
+  if (Math.abs(parsed) >= 100000000) return `${(parsed / 100000000).toFixed(2)}亿`
+  if (Math.abs(parsed) >= 10000) return `${(parsed / 10000).toFixed(0)}万`
+  return `${parsed.toFixed(0)}`
+}
+
+export function formatDate(value: string | null | undefined): string {
+  return value || '-'
+}
+
+export function formatWanAmount(value: string | number | null | undefined): string {
+  const parsed = numberFromText(value)
+  if (parsed === null) return '-'
+
+  if (Math.abs(parsed) >= 10000) {
+    return `${(parsed / 10000).toFixed(Math.abs(parsed) >= 100000 ? 1 : 0)}亿`
+  }
+
+  if (Math.abs(parsed) >= 1) {
+    const fixed = Math.abs(parsed) >= 1000 ? 0 : 1
+    return `${parsed.toFixed(fixed)}万`
+  }
+
+  return `${parsed.toFixed(2)}万`
+}
+
+export function formatSignedWanAmount(value: string | number | null | undefined): string {
+  const parsed = numberFromText(value)
+  if (parsed === null) return '-'
+  const prefix = parsed > 0 ? '+' : ''
+  return `${prefix}${formatWanAmount(parsed)}`
+}