import type { InventoryBalanceDto } from './api/inventory'
import type { InventoryListItem } from './types'
import { formatOverseasDateTime } from './lastMilePresentation'

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

function count(value: unknown) {
  const normalized = Number(value)
  return Number.isFinite(normalized) ? normalized : 0
}

export function inventoryProductName(dto: InventoryBalanceDto) {
  return text(dto.productNameZh || dto.productNameEn)
}

export function inventoryStatusLabel(dto: InventoryBalanceDto) {
  if (count(dto.holdPackages) > 0) return '存在暂扣'
  if (count(dto.availablePackages) <= 0) return '无可用库存'
  return '正常'
}

export function toInventoryListItem(dto: InventoryBalanceDto): InventoryListItem {
  return {
    id: String(dto.id),
    customerId: String(dto.customerId),
    warehouseId: String(dto.overseasWarehouseId || ''),
    inboundOrderNo: text(dto.inboundOrderNo) === '—' ? '' : String(dto.inboundOrderNo),
    inboundCode: text(dto.inboundCode) === '—' ? '' : String(dto.inboundCode),
    owner: text(dto.customerName),
    warehouse: text(dto.overseasWarehouseName),
    sku: text(dto.skuCode),
    productName: inventoryProductName(dto),
    location: '—',
    onHand: count(dto.totalPackages),
    available: count(dto.availablePackages),
    held: count(dto.holdPackages),
    looseboard: '—',
    inTransit: count(dto.inTransitPackages),
    purchase: count(dto.procurementPackages),
    status: inventoryStatusLabel(dto),
    updatedAt: formatOverseasDateTime(dto.updatedAt),
  }
}