export function formatAmount(value: number | null): string {
  if (value === null || Number.isNaN(value)) {
    return '--'
  }

  return `${value.toFixed(2)}`
}

export function formatFlowAmountYi(value: number | null): string {
  if (value === null || Number.isNaN(value)) {
    return '--'
  }

  return `${value.toFixed(2)} 亿`
}

export function formatPrice(value: number | null): string {
  if (value === null || Number.isNaN(value)) {
    return '--'
  }

  return `${value.toFixed(2)}`
}

export function formatPercent(value: number | null): string {
  if (value === null || Number.isNaN(value)) {
    return '--'
  }

  return `${value.toFixed(2)}%`
}

export function formatTimestamp(value: string | null): string {
  return value ?? '待更新'
}

export function formatMarketState(state: string): string {
  const mapping: Record<string, string> = {
    pre_open: '盘前',
    trading_am: '上午交易',
    midday_break: '午间休市',
    trading_pm: '下午交易',
    finalizing: '收盘确认中',
    closed: '已收盘'
  }

  return mapping[state] ?? state
}

export function formatPrecision(state: string): string {
  const mapping: Record<string, string> = {
    realtime_exact: '实时准确值',
    close_final: '收盘最终值',
    historical_exact: '历史准确值',
    unavailable: '当前不可用'
  }

  return mapping[state] ?? state
}