// const promise = new Promise((resolve, reject) => {

// setTimeout(() => {

// // resolve("Success");

// reject(new Error("Not logged in"));

// }, 2000);

// });

// promise

// .then(user => {

// console.log(user);

// })

// .catch(err => {

// console.log(err.message);

// });

// n-th callback will become callback-hell

console.log("Start");

function loginUser(email, password) {

return new Promise(resolve => {

resolve({ userEmail: email })

}, 3000);

}

function getUserVideos(email) {

return new Promise((resolve, reject) => {

setTimeout(() => {

if(email === "Eka") {

resolve(["video 1", "video 2"]);

} else {

reject("No email / username");

}

}, 2000);

});

}

function getVideoDetails(video) {

return new Promise(resolve => {

setTimeout(() => {

console.log("Details video");

}, 1000);

});

}

loginUser("Eka", 123)

.then(user => getUserVideos(user.userEmail))

.then(videos => console.log(videos))

.then(detail => getVideoDetails(detail))

.catch(err => console.log(err))

console.log("Finish");