Fetch Create Deposit Address

// ----------------------------------------------------------------------------
// setup

import ccxt from '../../js/ccxt.js';

// ----------------------------------------------------------------------------
// setup

const // change me
     defaultCurrencyCode = 'BTC',
     // change me
     //                                  currency code specified in commandline args ↓
     // you can call this script like node examples/js/fetch-create-deposit-address ETH
     exchangeId = 'poloniex',
     currencyCode = process.argv[3] || defaultCurrencyCode,
     exchange = new ccxt[exchangeId] ({

             'apiKey': 'YOUR_API_KEY',
             'secret': 'YOUR_SECRET',

             'enableRateLimit': true, // ←- required! https://github.com/ccxt/ccxt/wiki/Manual#rate-limit

             // 'verbose': true, // ←- uncomment this for verbose output

             // additional credentials might be required in exchange-specific cases:
             // uid or password for Coinbase Pro, etc...
         });

// ----------------------------------------------------------------------------

if (!exchange.has['fetchDepositAddress']) {

   console.log ('The exchange does not support fetchDepositAddress() yet')
   process.exit ()
}

// ----------------------------------------------------------------------------

;(async () => {

   try {

       console.log ('Trying to fetch deposit address for ' + currencyCode + ' from ' + exchangeId + '...')

       let fetchResult = await exchange.fetchDepositAddress (currencyCode)

       console.log ('Successfully fetched deposit address for ' + currencyCode)
       console.log (fetchResult)

   } catch (e) {

       // never skip proper error handling, whatever it is you're building
       // actually, with crypto error handling should be the largest part of your code

       if (e instanceof ccxt.InvalidAddress) {

           console.log ('The address for ' + currencyCode + ' does not exist yet')

           if (exchange.has['createDepositAddress']) {

               console.log ('Attempting to create a deposit address for ' + currencyCode + '...')

               try {

                   const createResult = await exchange.createDepositAddress (currencyCode)

                   // console.log (createResult) // for debugging

                   console.log ('Successfully created a deposit address for ' + currencyCode + ', fetching the deposit address now...')

                   try {

                       let fetchResult = await exchange.fetchDepositAddress (currencyCode)

                       console.log ('Successfully fetched deposit address for ' + currencyCode)
                       console.log (fetchResult);


                   } catch (e) {

                       console.log ('Failed to fetch deposit address for ' + currencyCode, e.constructor.name, e.message)
                   }

               } catch (e) {

                   console.log ('Failed to create deposit address for ' + currencyCode, e.constructor.name, e.message)

               }

           } else {

               console.log ('The exchange does not support createDepositAddress()')
           }

       } else {

           console.log ('There was an error while fetching deposit address for ' + currencyCode, e.constructor.name, e.message)
       }
   }

}) ()