export const initSession = (configurationName, storage = sessionStorage) => {
  const clearAsync = status => {
    storage[`oidc.${configurationName}`] = JSON.stringify({ tokens: null, status });
    return Promise.resolve();
  };

  const initAsync = async () => {
    if (!storage[`oidc.${configurationName}`]) {
      storage[`oidc.${configurationName}`] = JSON.stringify({ tokens: null, status: null });
      return { tokens: null, status: null };
    }
    const data = JSON.parse(storage[`oidc.${configurationName}`]);
    return Promise.resolve({ tokens: data.tokens, status: data.status });
  };

  const setTokens = tokens => {
    storage[`oidc.${configurationName}`] = JSON.stringify({ tokens });
  };

  const setSessionStateAsync = async sessionState => {
    storage[`oidc.session_state.${configurationName}`] = sessionState;
  };

  const getSessionStateAsync = async () => {
    return storage[`oidc.session_state.${configurationName}`];
  };

  const setNonceAsync = nonce => {
    storage[`oidc.nonce.${configurationName}`] = nonce.nonce;
  };

  const setDemonstratingProofOfPossessionJwkAsync = (jwk: JsonWebKey) => {
    storage[`oidc.jwk.${configurationName}`] = JSON.stringify(jwk);
  };

  const getDemonstratingProofOfPossessionJwkAsync = () => {
    return JSON.parse(storage[`oidc.jwk.${configurationName}`]);
  };

  const getNonceAsync = async () => {
    // @ts-ignore
    return { nonce: storage[`oidc.nonce.${configurationName}`] };
  };

  const setDemonstratingProofOfPossessionNonce = async (dpopNonce: string) => {
    storage[`oidc.dpop_nonce.${configurationName}`] = dpopNonce;
  };

  const getDemonstratingProofOfPossessionNonce = (): string => {
    return storage[`oidc.dpop_nonce.${configurationName}`];
  };

  const getTokens = () => {
    if (!storage[`oidc.${configurationName}`]) {
      return null;
    }
    return JSON.stringify({ tokens: JSON.parse(storage[`oidc.${configurationName}`]).tokens });
  };

  const getLoginParamsCache = {};
  const setLoginParams = data => {
    getLoginParamsCache[configurationName] = data;
    storage[`oidc.login.${configurationName}`] = JSON.stringify(data);
  };
  const getLoginParams = () => {
    const dataString = storage[`oidc.login.${configurationName}`];

    if (!dataString) {
      console.warn(
        `storage[oidc.login.${configurationName}] is empty, you should have an bad OIDC or code configuration somewhere.`,
      );
      return null;
    }

    if (!getLoginParamsCache[configurationName]) {
      getLoginParamsCache[configurationName] = JSON.parse(dataString);
    }
    return getLoginParamsCache[configurationName];
  };

  const getStateAsync = async () => {
    return storage[`oidc.state.${configurationName}`];
  };

  const setStateAsync = async (state: string) => {
    storage[`oidc.state.${configurationName}`] = state;
  };

  const getCodeVerifierAsync = async () => {
    return storage[`oidc.code_verifier.${configurationName}`];
  };

  const setCodeVerifierAsync = async codeVerifier => {
    storage[`oidc.code_verifier.${configurationName}`] = codeVerifier;
  };

  return {
    clearAsync,
    initAsync,
    setTokens,
    getTokens,
    setSessionStateAsync,
    getSessionStateAsync,
    setNonceAsync,
    getNonceAsync,
    setLoginParams,
    getLoginParams,
    getStateAsync,
    setStateAsync,
    getCodeVerifierAsync,
    setCodeVerifierAsync,
    setDemonstratingProofOfPossessionNonce,
    getDemonstratingProofOfPossessionNonce,
    setDemonstratingProofOfPossessionJwkAsync,
    getDemonstratingProofOfPossessionJwkAsync,
  };
};