import { getPlatformWarehouse, listAllPlatformWarehouses, type PlatformWarehouseAddressResource } from '@/modules/warehouses'

export type RouteLocation =
  | { kind: 'address'; label: string; address: string }
  | { kind: 'warehouse'; label: string; warehouseId?: string; warehouseCode?: string }

export class RouteAddressError extends Error {}

export function routeLocation(place: string, address?: string | null): RouteLocation {
  const label = place.trim()
  // FBA codes in free-text order fields also require authoritative address resolution.
  if (/^[A-Z]{3}\d{1,2}$/i.test(label)) return { kind: 'warehouse', label, warehouseCode: label.toUpperCase() }
  return { kind: 'address', label, address: [label, address?.trim()].filter(Boolean).join(' ') }
}

function formatAddress(address: PlatformWarehouseAddressResource | undefined, label: string) {
  if (!address?.addressLine1?.trim() || !address.city?.trim() || !address.countryCode?.trim()) {
    throw new RouteAddressError(`${label}缺少完整仓库地址，请在仓库资料中补充街道、城市和国家`)
  }
  return [address.addressLine1, address.addressLine2, address.district, address.city, address.stateProvince, address.postalCode, address.countryCode]
    .map(value => value?.trim()).filter(Boolean).join(', ')
}

export async function resolveRouteLocation(location: RouteLocation): Promise<string> {
  if (location.kind === 'address') return location.address.trim()
  let warehouseId = location.warehouseId
  if (!warehouseId) {
    const keyword = location.warehouseCode?.trim() || location.label.trim()
    if (!keyword || ['—', '-', '仓库名称待补充'].includes(keyword)) throw new RouteAddressError('缺少仓库标识，请核对仓库资料')
    const warehouses = await listAllPlatformWarehouses({ keyword, ...(location.warehouseCode ? { warehouseType: 'FBA' as const } : {}) })
    const matches = warehouses.filter(warehouse => location.warehouseCode
      ? warehouse.warehouseCode.toUpperCase() === keyword.toUpperCase()
      : warehouse.warehouseName === keyword)
    if (matches.length !== 1) throw new RouteAddressError(matches.length ? `${location.label}匹配到多个仓库，请核对仓库资料` : `未找到${location.label}的仓库资料`)
    warehouseId = String(matches[0]!.id)
  }
  const detail = await getPlatformWarehouse(warehouseId)
  if (location.warehouseCode && (detail.warehouse.warehouseType !== 'FBA' || detail.warehouse.warehouseCode.toUpperCase() !== location.warehouseCode.toUpperCase())) {
    throw new RouteAddressError(`${location.label}与查询到的仓库资料不一致，请重新查询`)
  }
  const operating = detail.addresses.filter(address => address.addressType === 'OPERATING')
  const addresses = operating.length ? operating : detail.addresses
  if (addresses.length !== 1) throw new RouteAddressError(`${location.label}的运营地址不唯一或尚未维护，请核对仓库资料`)
  return formatAddress(addresses[0], location.label)
}