import { api as client } from "../auth/http";
import { unwrap } from "@/utils/endpoint";
import { URL_CONSTANTS } from "@/constants/URLS";
import type { BookingDetail } from "@/types/booking";

const B = URL_CONSTANTS.BOOKINGS;

export interface BookingListFilter {
  status?: string;
  // customerId?: string;
  companyId?: string;
  freightType?: string;
  tradeDirection?: string;
  paymentCurrency?: string;
  page?: number;
  pageSize?: number;
  sortBy?: string;
  sortOrder?: "ASC" | "DESC";
}

export interface PaginatedBookings {
  items: BookingDetail[];
  total: number;
}

export interface ApproveStepPayload {
  id: string;
  stepId: string;
  requiredRole: string;
}

export interface RejectStepPayload {
  id: string;
  stepId: string;
  reason: string;
}

export interface ContractView {
  bookingId: string;
  reference: string;
  status: string;
  templateKey: string;
  title: string;
  html: string;
  canSignCustomer: boolean;
  canSignStaff: boolean;
  hasContractDocument: boolean;
  signatures: Array<{
    role: string;
    signerDisplayName: string;
    signedAt: string;
    signatureImageUrl?: string | null;
  }>;
}

export interface SignContractPayload {
  role: "CUSTOMER" | "STAFF";
  signatureImageBase64: string;
  signerDisplayName: string;
  consentText?: string;
}

async function postBooking<T>(url: string, body?: unknown): Promise<T> {
  const response = await client.post<T>(url, body ?? {});
  return unwrap(response.data);
}

export const bookingsService = {
  list: async (filter?: BookingListFilter): Promise<PaginatedBookings> => {
    const response = await client.get<PaginatedBookings>(B.BASE, {
      params: filter,
    });
    const data = unwrap(response.data);
    return {
      items: (data.items ?? []) as BookingDetail[],
      total: data.total ?? 0,
    };
  },

  getById: async (id: string): Promise<BookingDetail> => {
    const response = await client.get<BookingDetail>(B.BY_ID(id));
    return unwrap(response.data) as BookingDetail;
  },

  remove: async (id: string): Promise<void> => {
    await client.delete(B.BY_ID(id));
  },

  staffAccept: (id: string) => postBooking<BookingDetail>(B.STAFF_ACCEPT(id)),

  requestChanges: (id: string, note: string) =>
    postBooking<BookingDetail>(B.STAFF_REQUEST_CHANGES(id), { note }),

  staffReject: (id: string, reason: string) =>
    postBooking<BookingDetail>(B.STAFF_REJECT(id), { reason }),

  approveStep: ({ id, stepId, requiredRole }: ApproveStepPayload) =>
    postBooking<BookingDetail>(B.APPROVE_STEP(id, stepId), { requiredRole }),

  rejectStep: ({ id, stepId, reason }: RejectStepPayload) =>
    postBooking<BookingDetail>(B.REJECT_STEP(id, stepId), { reason }),

  generateContract: (id: string) =>
    postBooking<BookingDetail>(B.CONTRACT_GENERATE(id)),

  getContractView: async (id: string): Promise<ContractView> => {
    const response = await client.get<ContractView>(B.CONTRACT_VIEW(id));
    return unwrap(response.data) as ContractView;
  },

  downloadContract: async (id: string): Promise<Blob> => {
    const response = await client.get(B.CONTRACT_DOWNLOAD(id), {
      responseType: "blob",
    });
    return response.data as Blob;
  },

  downloadContractDocument: async (id: string): Promise<Blob> => {
    const response = await client.get(B.CONTRACT_DOCUMENT(id), {
      responseType: "blob",
    });
    return response.data as Blob;
  },

  signContract: (id: string, payload: SignContractPayload) =>
    postBooking<BookingDetail>(B.CONTRACT_SIGN(id), payload),

  getSummary: async (id: string): Promise<{ summary: string }> => {
    const response = await client.get<{ summary: string }>(B.SUMMARY(id));
    return unwrap(response.data);
  },

  customerSign: (id: string, payload: SignContractPayload) =>
    postBooking<BookingDetail>(B.CUSTOMER_SIGN(id), {
      ...payload,
      role: "CUSTOMER",
    }),

  marketingApprove: (id: string, payload: SignContractPayload) =>
    postBooking<BookingDetail>(B.MARKETING_APPROVE(id), {
      ...payload,
      role: "STAFF",
    }),

  generatePnr: (id: string) => postBooking<BookingDetail>(B.PAYMENT_PNR(id)),

  submitPaymentProof: async (id: string, file: File): Promise<BookingDetail> => {
    const form = new FormData();
    form.append("file", file);
    const response = await client.post<BookingDetail>(B.PAYMENT_PROOF(id), form, {
      headers: { "Content-Type": "multipart/form-data" },
    });
    return unwrap(response.data) as BookingDetail;
  },

  verifyPayment: (id: string) =>
    postBooking<BookingDetail>(B.PAYMENT_VERIFY(id)),

  downloadPaymentRequestLetter: async (id: string): Promise<Blob> => {
    const response = await client.get(B.PAYMENT_REQUEST_LETTER(id), {
      responseType: "blob",
    });
    return response.data as Blob;
  },

  startTransit: (id: string) =>
    postBooking<BookingDetail>(B.START_TRANSIT(id)),

  complete: (id: string) => postBooking<BookingDetail>(B.COMPLETE(id)),

  cancel: (id: string, reason: string) =>
    postBooking<BookingDetail>(B.CANCEL(id), { reason }),
};