export {
  protocolStatusLabel,
  protocolStatusDisplayLabel,
  protocolStatusTagType,
  payStatusLabel,
  payStatusTagType,
  payModeLabel,
  payModeTagType
} from './status-tag-registry'
export {
  loadTransferTypeDict,
  getTransferTypeOptions,
  TRANSFER_TYPE_DICT,
  resolveTransferTypeLabel as transferTypeLabel,
  resolveTransferTypeTagType as transferTypeTagType
} from './transfer-type-dict'

export function formatPaymentDueDate(d: unknown) {
  const s = String(d || '')
  if (!s) return '-'
  if (s.length === 8) return `${s.slice(0, 4)}-${s.slice(4, 6)}-${s.slice(6, 8)}`
  return s
}

export const PAYMENT_DUE_WARN_DAYS = 15

function parsePaymentDueYmd(ymd: unknown): Date | null {
  const raw = String(ymd || '').replace(/\D/g, '')
  if (raw.length !== 8) return null
  const y = Number(raw.slice(0, 4))
  const m = Number(raw.slice(4, 6)) - 1
  const d = Number(raw.slice(6, 8))
  const dt = new Date(y, m, d)
  if (dt.getFullYear() !== y || dt.getMonth() !== m || dt.getDate() !== d) return null
  return dt
}

function startOfLocalDay(d: Date) {
  return new Date(d.getFullYear(), d.getMonth(), d.getDate())
}

export function isPaymentDueWithinWarnWindow(
  installmentDueDate: unknown,
  warnDays = PAYMENT_DUE_WARN_DAYS
) {
  const due = parsePaymentDueYmd(installmentDueDate)
  if (!due) return false
  const today = startOfLocalDay(new Date())
  const limit = new Date(today)
  limit.setDate(limit.getDate() + warnDays)
  return due.getTime() <= limit.getTime()
}

export function formatPaymentAmount(v: unknown) {
  if (v == null || v === '') return '-'
  const n = Number(v)
  if (Number.isNaN(n)) return String(v)
  return '¥' + n.toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 })
}