import type { LastMileOrderSummaryDto } from './api/lastMileOrders'
import type { LastMileOrderListItem } from './types'

const orderTypeLabels: Record<string, string> = {
  ONE_CLICK_DROPSHIP: '一件代发',
  FIRST_LEG: '头程订单',
  RELABEL_APPLICATION: '换标下单',
  WAREHOUSE_TRANSFER: '仓储转运',
  RETURN_RELABEL: '退货换标',
  LOCAL_LOOSEBOARD: '本土散板',
  REJECTED: '拒收订单',
  EXPRESS: '快递订单',
}

const statusLabels: Record<string, string> = {
  PENDING_ASSIGNMENT: '待分配',
  DESTINATION_ASSIGNED: '已分配目的仓',
  INBOUND_PLANNED: '已生成入库计划',
  PENDING_PROCESSING: '待处理',
  PROCESSING: '处理中',
  COMPLETED: '已完成',
  CANCELLED: '已取消',
}

function text(value: unknown) {
  const normalized = String(value ?? '').trim()
  return normalized || '—'
}

function metric(value: number | null | undefined): number | '—' {
  return value != null && Number.isFinite(value) ? Number(value) : '—'
}

function yesNo(value: boolean | null | undefined) {
  return value == null ? '—' : value ? '是' : '否'
}

export function lastMileStatusLabel(value: unknown) {
  const code = String(value ?? '').trim()
  return statusLabels[code] || text(code)
}

export function lastMileOrderTypeLabel(value: unknown) {
  const code = String(value ?? '').trim()
  return orderTypeLabels[code] || text(code)
}

export function lastMileOrderReference(value: unknown, emptyLabel = '—') {
  const serverValue = value == null ? '' : String(value)
  return serverValue || emptyLabel
}

export function formatOverseasDateTime(value: unknown) {
  const raw = String(value ?? '').trim()
  if (!raw) return '—'
  const dateOnly = /^(\d{4})-(\d{2})-(\d{2})$/.exec(raw)
  const date = value instanceof Date
    ? new Date(value.getTime())
    : typeof value === 'number'
      ? new Date(value)
      : dateOnly
        ? new Date(Number(dateOnly[1]), Number(dateOnly[2]) - 1, Number(dateOnly[3]))
        : new Date(raw)
  if (Number.isNaN(date.getTime())) return raw
  const pad = (part: number) => String(part).padStart(2, '0')
  return `${date.getFullYear()}-${pad(date.getMonth() + 1)}-${pad(date.getDate())} ${pad(date.getHours())}:${pad(date.getMinutes())}:${pad(date.getSeconds())}`
}

export function palletMergeLabel(value: unknown) {
  const code = String(value ?? '').trim()
  return ({ REQUIRED: '待合托', MERGED: '已合托' } as Record<string, string>)[code] || (code ? text(code) : '未标记')
}

export function toLastMileOrderListItem(dto: LastMileOrderSummaryDto): LastMileOrderListItem {
  return {
    id: String(dto.id),
    customerId: String(dto.customerId),
    sourceContainerBookingId: String(dto.sourceContainerBookingId ?? '').trim(),
    orderNo: lastMileOrderReference(dto.orderNo),
    warning: dto.abnormal ? '异常' : '—',
    orderType: text(dto.orderTypeName || lastMileOrderTypeLabel(dto.orderType)),
    rejectedAt: '—',
    inboundCode: text(dto.inboundCode),
    owner: text(dto.customerName),
    warehouse: text(dto.overseasWarehouseName),
    transferWarehouse: text(dto.transferWarehouseName),
    fbaWarehouse: text(dto.fbaWarehouseCode),
    containerNo: text(dto.containerNo),
    containerStatus: text(dto.containerStatus),
    abnormal: yesNo(dto.abnormal),
    held: yesNo(dto.detained),
    pallets: metric(dto.palletCount),
    cartons: metric(dto.packageCount),
    volume: metric(dto.volumeCbm),
    quantity: metric(dto.productQuantity),
    volumeWeight: metric(dto.volumeWeightKg),
    portEta: formatOverseasDateTime(dto.estimatedArrivalAt),
    portAta: formatOverseasDateTime(dto.actualArrivalAt),
    warehouseEta: formatOverseasDateTime(dto.estimatedWarehouseAt),
    inboundOrderNo: text(dto.inboundOrderNo),
    outboundOrderNo: text(dto.outboundOrderNo),
    dispatchOrderNo: text(dto.deliveryOrderNo),
    relabelOrderNo: text(dto.relabelOrderNo),
    relabelStatus: lastMileStatusLabel(dto.relabelStatus),
    consolidated: palletMergeLabel(dto.palletMergeFlag),
    palletMergeFlag: String(dto.palletMergeFlag ?? '').trim(),
    palletMergeRelation: Array.isArray(dto.palletMergeInboundNos) && dto.palletMergeInboundNos.length
      ? dto.palletMergeInboundNos.map((value) => text(value)).join('、')
      : dto.palletMergeBatchId ? `批次 ${text(dto.palletMergeBatchId)}` : '—',
    status: lastMileStatusLabel(dto.currentStatus),
    internalRemark: text(dto.privateRemark),
    customerRemark: text(dto.customerRemark),
    warehouseRemark: text(dto.warehouseRemark),
    createdAt: formatOverseasDateTime(dto.createdAt),
  }
}