Codecademy export

app.js

const {checkAvailability} = require('./library.js');

const onFulfill = (itemsArray) => {
  console.log(`Items checked: ${itemsArray}`);
  console.log(`Every item was available from the distributor. Placing order now.`);
};

const onReject = (rejectionReason) => {
	console.log(rejectionReason);
};

// Write your code below:

const checkSunglasses = checkAvailability('sunglasses', 'Favorite Supply Co.');
const checkPants = checkAvailability('pants', 'Favorite Supply Co.'); 
const  checkBags = checkAvailability('bags', 'Favorite Supply Co.');

let myPromise = Promise.all([checkSunglasses, checkPants, checkBags]);

myPromise
  .then((arrayOfValues) => {
    onFulfill(arrayOfValues);
  })
  .catch((rejectReason) => {
    onReject(rejectReason);
  });

library.js

const checkAvailability = (itemName, distributorName) => {
    console.log(`Checking availability of ${itemName} at ${distributorName}...`);
    return new Promise((resolve, reject) => {
        setTimeout(() => {
            if (restockSuccess()) {
                console.log(`${itemName} are in stock at ${distributorName}`)
                resolve(itemName);
            } else {
                reject(`Error: ${itemName} is unavailable from ${distributorName} at this time.`);
            }
        }, 1000);
    });
};

module.exports = { checkAvailability };


// This is a function that returns true 80% of the time
// We're using it to simulate a request to the distributor being successful this often
function restockSuccess() {
    return (Math.random() > .2);
}