export function formatInboundNumber(value: number | null | undefined, maximumFractionDigits = 3) {
  if (value === null || value === undefined || !Number.isFinite(value)) return '-'
  return new Intl.NumberFormat('zh-CN', { maximumFractionDigits }).format(value)
}

export function formatInboundMeasure(value: number | null | undefined, unit: string, maximumFractionDigits = 3) {
  const formatted = formatInboundNumber(value, maximumFractionDigits)
  return formatted === '-' ? formatted : `${formatted} ${unit}`
}

export function formatInboundMoney(value: number | null | undefined, currency: string) {
  if (value === null || value === undefined || !Number.isFinite(value)) return '-'
  try {
    return new Intl.NumberFormat('zh-CN', {
      style: 'currency',
      currency,
      minimumFractionDigits: 2,
      maximumFractionDigits: 2,
    }).format(value)
  } catch {
    return `${currency} ${value.toFixed(2)}`
  }
}

export function formatInboundDateTime(value: string | null | undefined) {
  if (!value) return '-'
  const date = new Date(value)
  if (Number.isNaN(date.getTime())) return value
  return new Intl.DateTimeFormat('zh-CN', {
    year: 'numeric',
    month: '2-digit',
    day: '2-digit',
    hour: '2-digit',
    minute: '2-digit',
    hour12: false,
  }).format(date)
}

export function getChargeModeLabel(value: 'KG' | 'CBM') {
  return value === 'KG' ? '按重量计费' : '按体积计费'
}

export function getTaxModeLabel(value: string) {
  if (value === 'TAX_INCLUDED') return '包税'
  if (value === 'TAX_EXCLUDED') return '不包税'
  return value || '-'
}

export function getCalculationRuleLabel(value: string | null | undefined) {
  if (!value) return '-'
  if (value === 'ACTUAL_DIMENSION_V1' || value === 'DIMENSION_ACTUAL_V1') return '按实际箱规计算'
  const customerRule = /^CUSTOMER_DIMENSION_(SMALL|MEDIUM|LARGE|EXTRA_LARGE)_V(\d+)$/.exec(value)
  if (customerRule) {
    const sizeLabel: Record<string, string> = {
      SMALL: '小号', MEDIUM: '中号', LARGE: '大号', EXTRA_LARGE: '超大号',
    }
    return `客户箱规规则（${sizeLabel[customerRule[1]]}，V${customerRule[2]}）`
  }
  const warehouseRule = /^WAREHOUSE_OUTER_OVERRIDE_(.+)$/.exec(value)
  return warehouseRule ? `仓库外箱规覆盖（${warehouseRule[1]}）` : value
}

export function getRoundingModeLabel(value: string | null | undefined) {
  const labels: Record<string, string> = {
    UP: '向上舍入',
    DOWN: '向下舍入',
    CEILING: '向上取整',
    FLOOR: '向下取整',
    HALF_UP: '四舍五入',
    HALF_DOWN: '五舍六入',
    HALF_EVEN: '银行家舍入',
  }
  return value ? labels[value] || value : '-'
}

export function formatConversionPrecision(
  conversionFactor: number | null | undefined,
  roundingScale: number | null | undefined,
  roundingMode: string | null | undefined,
) {
  if (conversionFactor === null || conversionFactor === undefined
    || roundingScale === null || roundingScale === undefined
    || !roundingMode) return '-'
  return `系数 ${formatInboundNumber(conversionFactor)} · 保留 ${roundingScale} 位 ${getRoundingModeLabel(roundingMode)}`
}