script.js

const quoteContainer = document.getElementById('quote-container');
const quoteText = document.getElementById('quote');
const authorText = document.getElementById('author');
const twitterBtn = document.getElementById('twitter');
const newQuoteBtn = document.getElementById('new-quote');
const loader = document.getElementById('loader');

//Show loading spinner
function showLoadingSpinner(){
    loader.hidden = false;
    quoteContainer.hidden = true;
}

//Remove Loading spinner
function removeLoadingSpinner(){
    if(!loader.hidden){
        quoteContainer.hidden = false;
        loader.hidden = true;
    }
}

//Get Quote from API
async function getQuote(){
    
    //Show loading at the beginning
    showLoadingSpinner();

    //Start the process of getting quote from the API
    const proxyUrl = 'https://rocky-castle-53018.herokuapp.com/'; //get your own proxy from heroku
    const apiUrl = 'http://api.forismatic.com/api/1.0/?method=getQuote&lang=en&format=json';
    try{
        const response = await fetch(proxyUrl + apiUrl);
        const data = await response.json();
        //If the author field is blank, add Anonymous
        if(data.quoteAuthor === ''){
            authorText.innerText = 'Anonymous';
        }
        else{
            authorText.innerText = data.quoteAuthor;
        }
        //Reduce font size for long quotes
        if(data.quoteText.length > 120){
            quoteText.classList.add('long-quote');
        }
        else{
            quoteText.classList.remove('long-quote');
        }
        quoteText.innerText = data.quoteText;

        //Stop loader, show quote
        removeLoadingSpinner(); 
    }
    catch(error){
        getQuote();
        console.log('Whoops, no quote!', error);
    }
}

function tweetQuote(){
    const quote = quoteText.innerText;
    const author = authorText.innerText;
    const twitterUrl = `https://twitter.com/intent/tweet?text=${quote} - ${author}`;
    window.open(twitterUrl, '_blank');
}

newQuoteBtn.addEventListener('click', getQuote);
twitterBtn.addEventListener('click', tweetQuote);

//On Load
getQuote();