import { useCallback, useEffect, useState } from 'react';
import memoize from 'lodash.memoize';

enum Status {
  IDLE = 'IDLE',
  LOADING = 'LOADING',
  SUCCESS = 'SUCCESS',
  FAILURE = 'FAILURE',
}

interface UseCodeCortexLicenseKeyResponse {
  isIdle: boolean;
  isLoading: boolean;
  isSuccess: boolean;
  isFailure: boolean;
  data: string | undefined;
}

const downloadLicenseKey = memoize(async () => {
  const response = await fetch(
    'https://omg-cc-license.omborigrid.com/licenses/code-cortex-prod.txt',
  );
  const blob = await response.blob();
  const key = await blob.text();

  return key;
});

export const useCodeCortexLicenseKey = (): UseCodeCortexLicenseKeyResponse => {
  const [status, setStatus] = useState<Status>(Status.IDLE);
  const [data, setData] = useState<string>();

  useEffect(() => {
    const download = async () => {
      try {
        setStatus(Status.LOADING);
        const key = await downloadLicenseKey();

        setData(key);
        setStatus(Status.SUCCESS);
      } catch (error) {
        setStatus(Status.FAILURE);
      }
    };

    download();
  }, []);

  return {
    isIdle: status === Status.IDLE,
    isLoading: status === Status.LOADING,
    isSuccess: status === Status.SUCCESS,
    isFailure: status === Status.FAILURE,
    data,
  };
}