test

// function isTokenExist() {
//     return new Promise((resolve, reject) => {
//         if (Math.random() >= 0.5) {
//             return resolve({"token": 4321})
//         }
//         reject("not exist")
//     })
// }
//

//
//
// getToken().then(token => {
//     console.log(token)
// });

function getToken() {

}

function reg(url, params) {
    return new Promise((resolve, reject) => {
        let promise = fetch(url);
        return promise.then(r => {
            return r.json()
        })
            .then(data => resolve(data))
            .catch(err => {
                if (403 === parseInt(err.status, 10)) {
                    return getToken()
                        .then(token => reg(url, params).then(data => resolve(data)))
                        .catch(err => reject(err))
                } else if (423 ===  parseInt(err.status, 10)) {
                    return generateToken()
                        .then(token => reg(url, params).then(data => resolve(data)))
                        .catch(err => reject(err))
                }
            });
    })
}


reg('https://randomuser.me/api/').then(data => console.log(data));