export const getJwtTokenFromApi = () => {

    var request = new Request('/api/token', {
        method: 'GET',
        mode: 'cors',
        credentials: 'include'
    });

    fetch(request)
        .then((response) => {
            response.text()
            .then((token) => {
                if(token.length > 0) {
                    localStorage.setItem('myToken', token);
                    return token;
                } else {
                    return null;
                }
             })
        })
        .catch(err => {
        });
}

export const getJwtToken = () => {

    let token = localStorage.getItem('myToken');

    if (token == null)
        token = getJwtTokenFromApi();

    return token;
}

export const myStartup = (callback) => {

    const token = getJwtToken();
    callback(token);
}

export const getJwtToken = () => {
  let token = localStorage.getItem('myToken');
  return token ? Promise.resolve(token) : getJwtTokenFromApi(storeToken)
}

getJwtToken().then(token => doSomething(token))

export const getJwtToken = (callback) => {

    // If token is already in sessionStorage, get it and return it.
    let token = sessionStorage.getItem('ingridToken');
    if (token != null)
        return token;

    // Token is not in sessionStorage. Get it from API
    var request = new Request('/api/accounts/token', {
        method: 'GET',
        mode: 'cors',
        credentials: 'include'
    });

    fetch(request)
        .then((response) => {

            response.text()
                .then((token) => {

                    if (token.length > 0) {

                        // First, save it in localStorage
                        localStorage.setItem('myToken', token);

                        // If no callback function received, just return token
                        if (typeof callback == "undefined") {

                            return token;
                        } else {

                            callback(token);
                        }
                    }
                })
        })
        .catch(err => {
        });
}