import { api } from '../auth/http';
import { URL_CONSTANTS } from '@/constants/URLS';

export const LAST_MILE_REQUEST_STATUSES = [
  'AWAITING_CONFIRMATION',
  'SUBMITTED',
  'APPROVED',
  'REJECTED',
] as const;
export type LastMileRequestStatus = (typeof LAST_MILE_REQUEST_STATUSES)[number];

export interface LastMileRequest {
  id: string;
  bookingId: string;
  booking?: {
    id: string;
    reference?: string;
    companyId?: string;
    company?: { id: string; name?: string } | null;
  } | null;
  trainScheduleId: string;
  status: LastMileRequestStatus;
  requestedContainerNumbers?: string[] | null;
  reminderSentAt?: string | null;
  submittedByUserId?: string | null;
  submittedAt?: string | null;
  reviewedByStaffId?: string | null;
  reviewedAt?: string | null;
  rejectionReason?: string | null;
  resultingLastMileId?: string | null;
  requestedDeliveryDate?: string | null;
  customerSignedAt?: string | null;
  signerDisplayName?: string | null;
  createdAt: string;
  updatedAt: string;
}

export interface LastMileRequestListResponse {
  data: LastMileRequest[];
  meta: { total: number; page: number; pageSize: number; totalPages: number };
}

/** Rule-based estimate for the approve dialog — all nulls when no rule covers the job. */
export interface LastMilePriceEstimate {
  estimatedKm: number | null;
  mode: 'BULK' | 'CONTAINER' | null;
  currency: string | null;
  total: number | null;
  lines: Array<{ description: string; amount: number }>;
}

const LMR = URL_CONSTANTS.LAST_MILE_REQUESTS;

export const lastMileRequestsService = {
  list: (params?: { status?: LastMileRequestStatus; bookingId?: string; page?: number; pageSize?: number }) =>
    api.get<LastMileRequestListResponse>(LMR.BASE, { params }),
  getById: (id: string) => api.get<LastMileRequest>(LMR.BY_ID(id)),
  freeTruckCount: () => api.get<{ count: number }>(LMR.FREE_TRUCK_COUNT),
  priceEstimate: (id: string) => api.get<LastMilePriceEstimate>(LMR.PRICE_ESTIMATE(id)),
  approve: (id: string, advanceAmount: number) =>
    api.post<LastMileRequest>(LMR.APPROVE(id), { advanceAmount }),
  reject: (id: string, reason: string) =>
    api.post<LastMileRequest>(LMR.REJECT(id), { reason }),
  contractDocument: (id: string) =>
    api.get<Blob>(LMR.CONTRACT_DOCUMENT(id), { responseType: 'blob' }),
};