import { LibtoolVersion } from "@gnu-taler/taler-util";
import { useApiContext } from "@gnu-taler/web-util/browser";
import { useEffect, useState } from "preact/hooks";
import { getInitialBackendBaseURL } from "./backend.js";

/**
 * Protocol version spoken with the bank.
 *
 * Uses libtool's current:revision:age versioning.
 */
export const BANK_INTEGRATION_PROTOCOL_VERSION = "0:0:0";

async function getConfigState(
  request: ReturnType<typeof useApiContext>["request"],
): Promise<SandboxBackend.Config | undefined> {
  try {
    const url = getInitialBackendBaseURL();
    const result = await request<SandboxBackend.Config>(
      url,
      `config`,
    );
    return result.data;
  } catch (error) {
    return undefined;
  }
}

export function useConfigState(): boolean | undefined {
  const [checked, setChecked] = useState<boolean>()
  const { request } = useApiContext();

  useEffect(() => {
    
    getConfigState(request)
      .then((result) => {
        if (!result) {
          setChecked(false)
        } else {
          const r = LibtoolVersion.compare(BANK_INTEGRATION_PROTOCOL_VERSION, result.version)
          setChecked(r?.compatible);
        }
      })
      .catch((error) => {
        setChecked(false);
      });
  });

  return checked;
}