import { getApiUrl } from './scripts/upstream';
import { uuid } from './stores/uuid';

export interface libauthResponse {
  uuidPresent?: boolean;
  serverAuthCheck?: boolean;
  uuidValue?: string;
  serverAuthCheckResponseCode?: number;
}

interface uuidCheckRes {
  uuidValue?: string;
  uuidPresent?: boolean;
}

export async function checkAuth(): Promise<libauthResponse> {
  let result: libauthResponse = {};
  const uuidCheck = await checkUuid();
  result.uuidPresent = uuidCheck?.uuidPresent;
  result.uuidValue = uuidCheck?.uuidValue;

  const serverCheck = await checkServerAuth(result.uuidValue || '');
  result.serverAuthCheck = serverCheck.authOk;
  result.serverAuthCheckResponseCode = serverCheck.status;

  return result;
}

async function checkUuid(): Promise<uuidCheckRes> {
  let uuid_value: string = '';
  const unsubscribe = uuid.subscribe((value) => {
    uuid_value = value;
  });
  let res: uuidCheckRes = {
    uuidValue: uuid_value
  };
  console.log('uuid-value is: ', uuid_value);
  if (uuid_value && uuid_value != 'null') {
    res = {
      uuidPresent: true,
      uuidValue: uuid_value
    };
  } else {
    res = {
      uuidPresent: false,
      uuidValue: uuid_value
    };
  }
  unsubscribe();
  return res;
}

async function checkServerAuth(uuidString: string) {
  const url = `${getApiUrl()}/api/v2/user/checkAuth`;
  const options = {
    method: 'GET',
    headers: {
      uuid: uuidString
    }
  };
  const res = await fetch(url, options);
  let ok: boolean;
  if (res.status !== 401) {
    ok = true;
  } else {
    ok = false;
  }
  return {
    authOk: ok,
    status: res.status
  };
}

export async function logout(): Promise<boolean> {
  uuid.set(null);
  return true;
}