creating own promise1

 let cart=["shoes","pants","kurtas"];

const promise=createOrder(cart);

console.log(promise);

promise.then((res)=>{

    console.log(res);

    //promise channing

   

})

.catch(err=>{

 console.log(err);

})

   

//start api which is running to order creation:---

function createOrder(cart){

    const mypromise=new  Promise(function(resolve,reject){

        if(!validiteCart(cart)){

            const err=new Error('cart is not valid');

            reject (err);

        }

        const orderId='123';

        if(orderId){

            // resolve (orderId);

            setTimeout(() => {

                console.log(orderId);

            },5000);

        }

    })

    return mypromise;

}

// function proceedToPayment(orderId){

//     //we will to do payment

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

//         resolve("payment successfull");

//     });

// }

//end api which is running to order creation:--

//proceed to payment api:--

//end of proceed to payment api"--

function validiteCart(cart){

    return true;

    // return false;

}