import { Pagination } from "./rest/get-query-params.js";
import { GraphQLServerError } from "./graphql/types.js";

/**
 * Configuration for making API requests to an ERP system.
 * apiUrl: The base URL of the ERP API.
 * getAuthToken: Function to get the authentication token.
 * For auth requests (like getting a new token), set this to empty string or null.
 * (Note that if the token is falsy (empty string, null, etc.), no Authorization header will be set.)
 * For all other requests, this should return a valid token.
 * The returned value will be used to construct the Authorization header as `Bearer ${token}`.
 */
export interface ERPApiConfig {
  apiUrl: string;
  getAuthToken: () => Promise<string>;
  /**
   * Optional per-ERP-client retry attempts.
   * SDK defaults apply: see `CoreConfiguration.erpApiRetryAttempts` (or `ERP_API_RETRY_ATTEMPTS` env var).
   */
  retryAttempts?: number;
  /**
   * Optional per-ERP-client timeout in seconds.
   * SDK defaults apply: see `CoreConfiguration.erpApiTimeoutSeconds` (or `ERP_API_TIMEOUT_SEC` env var).
   */
  timeoutSeconds?: number;
}

/**
 * Base response type for all API responses
 */
export interface APIResponse<T> {
  data: T;
  metadata?: {
    pagination?: Pagination;
    errors?: GraphQLServerError[];
    extensions?: Record<string, unknown>;
  };
}