var Bitpay = cordova.require('com.bitpay.sdk.cordova.Bitpay');

var bitpay = new Bitpay({
        host: 'bitpay.com', // or 'test.bitpay.com'
        port: 443,
        token: '70163c90f...' // as retrieved from above
    });

bitpay.createInvoice({
    price: 314.15,
    currency: 'USD'
}, function(error, invoice){
  if (error) throw error;

  // subscribe to events
  invoice.on('payment', function(e){
    // do something on payment
    var paid = invoice.data.btcPaid;
  })

  // open a native wallet with a signed payment request
  invoice.openWallet();

  // get the invoice url
  var url = invoice.data.url;

  // generate a qrcode
  invoice.getQrCode({format: 'BIP72'}, function(elm){
    // do something with the qrcode elm
  });
});

bitpay.getInvoice({
    id: 'RyNzmZEbGwACpmNg8X6jGN'
}, function(error, invoice){
  if (error) throw error;

  // do something with the invoice

});

bitpay.isWalletAvailable(function(available) {
    // e.g. enable open wallet button.
});

var Client = cordova.require('com.bitpay.sdk.cordova.RPCClient')

var client = new Client({
        host: 'test.bitpay.com',
        port: 443,
        token: '70163c90f...' // any type of token
    });

client.callMethod(..., function(error, data){
  ...
});