import { api as client } from "../auth/http";
import { unwrap } from "@/utils/endpoint";

const SIGNATURE_URL = "/me/signature";

export interface SavedSignature {
  signerDisplayName: string;
  signatureImageUrl?: string | null;
  stampImageUrl?: string | null;
}

/**
 * Signature only. A backoffice employee has no personal stamp — EDR seals with
 * the one global company stamp managed under Settings — so the stamp half of
 * PUT /me/signature is deliberately not exposed here, even though the shared
 * endpoint still accepts it for portal (customer) users.
 */
export interface SaveSignaturePayload {
  signerDisplayName: string;
  /** Omit to keep the existing saved signature. */
  signatureImageBase64?: string;
}

export const signaturesService = {
  /** Returns the current user's reusable signature, or null if none saved. */
  getMySignature: async (): Promise<SavedSignature | null> => {
    const response = await client.get<SavedSignature | null>(SIGNATURE_URL);
    return (unwrap(response.data) as SavedSignature | null) ?? null;
  },

  saveMySignature: async (
    payload: SaveSignaturePayload,
  ): Promise<SavedSignature | null> => {
    const response = await client.put<SavedSignature | null>(
      SIGNATURE_URL,
      payload,
    );
    return (unwrap(response.data) as SavedSignature | null) ?? null;
  },
};