import type { LocalTransportDetail, LocalTransportStatus } from './types'

export const truckStatusLabels: Record<LocalTransportStatus, string> = {
  PENDING_REVIEW: '待审核', WAITING_INBOUND: '待入仓', RECEIVING: '收货中', WAITING_CONSOLIDATION: '待合托',
  PALLET_OVERAGE_REVIEW: '超托待审', PARTIALLY_ALLOCATED: '部分分配', ALLOCATED: '已分配',
  PENDING_DISPATCH: '待派车', DISPATCHED: '已派车', IN_TRANSIT: '运输中', COMPLETED: '已完成', REJECTED: '已拒绝', CANCELLED: '已取消',
}
export const truckCommandLabels = {
  review: '审核', 'receive-pallets': '登记实收', 'review-pallet-overage': '超托审核', 'allocate-pallets': '分配托盘',
  'prepare-dispatch': '确认待派车', dispatch: '确认已派车', 'start-transit': '确认发运', complete: '确认完成', cancel: '取消订单',
} as const
export type TruckCommand = keyof typeof truckCommandLabels
export interface TruckCommandBase { version: number; idempotencyKey: string; remark?: string }
export type TruckOperation =
  | { command: 'review' | 'review-pallet-overage'; payload: TruckCommandBase & { decision: 'APPROVE' | 'REJECT' } }
  | { command: 'receive-pallets'; payload: TruckCommandBase & { actualPalletCount: number; packageCount?: number; palletPackageCounts?: number[] } }
  | { command: 'allocate-pallets'; payload: TruckCommandBase & { palletIds: string[] } }
  | { command: 'prepare-dispatch' | 'dispatch' | 'start-transit' | 'complete'; payload: TruckCommandBase }
  | { command: 'cancel'; payload: TruckCommandBase & { status: 'CANCELLED' } }

const nextCommands: Partial<Record<LocalTransportStatus, TruckCommand>> = {
  PENDING_REVIEW: 'review', WAITING_INBOUND: 'receive-pallets', RECEIVING: 'receive-pallets',
  PALLET_OVERAGE_REVIEW: 'review-pallet-overage', WAITING_CONSOLIDATION: 'allocate-pallets',
  PARTIALLY_ALLOCATED: 'allocate-pallets', ALLOCATED: 'prepare-dispatch', PENDING_DISPATCH: 'dispatch',
  DISPATCHED: 'start-transit', IN_TRANSIT: 'complete',
}
const cancellable = new Set<LocalTransportStatus>(['PENDING_REVIEW', 'WAITING_INBOUND', 'RECEIVING', 'PALLET_OVERAGE_REVIEW', 'WAITING_CONSOLIDATION', 'PARTIALLY_ALLOCATED', 'ALLOCATED', 'PENDING_DISPATCH'])

/** 拼车来源只读，独立单据只能执行当前状态对应的具名命令。 */
export function availableTruckCommands(order: Pick<LocalTransportDetail, 'status' | 'fleetArrangement'>): TruckCommand[] {
  if (order.fleetArrangement) return []
  const next = nextCommands[order.status]
  return [...(next ? [next] : []), ...(cancellable.has(order.status) ? ['cancel' as const] : [])]
}

export const truckCommandHints: Record<TruckCommand, string> = {
  review: '请核对车型、路线、两端联系信息、取送时间和货物资料。通过后进入待入仓，拒绝后结束本次申请。',
  'receive-pallets': '按实际收货填写截至本次的累计实收托数。首次实收确定本单托数，后续超出已确认托数需要超托审核。',
  'review-pallet-overage': '通过后将超收托盘纳入本单；拒绝后将超收托盘标记为拒收，按原已确认托数继续。',
  'allocate-pallets': '选择本单已实收且未分配的托盘，可分批分配；全部已接收托盘分配完成后才能进入待派车。',
  'prepare-dispatch': '确认全部已接收托盘已分配完成，将本单交由调度安排车辆。',
  dispatch: '请在车辆安排已实际完成后确认，本单将进入已派车。',
  'start-transit': '请在车辆已实际发运后确认，本单将进入运输中。',
  complete: '请在运输及交付已实际完成后确认。确认完成后不能撤回。',
  cancel: '取消后本单不能继续履约，请填写取消原因并核对已有收货和托盘记录。',
}