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app.js
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app.js
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// This loads the environment variables from the .env file
require('dotenv-extended').load();
var util = require('util');
var builder = require('botbuilder');
var restify = require('restify');
var payments = require('./payments');
var checkout = require('./checkout');
var catalog = require('./services/catalog');
var connector = new builder.ChatConnector({
appId: process.env.MICROSOFT_APP_ID,
appPassword: process.env.MICROSOFT_APP_PASSWORD
});
var server = restify.createServer();
server.listen(process.env.port || process.env.PORT || 3978, function () {
console.log('%s listening to %s', server.name, server.url);
});
server.post('/api/messages', connector.listen());
var CartIdKey = 'CardId';
// Bot Storage: Here we register the state storage for your bot.
// Default store: volatile in-memory store - Only for prototyping!
// We provide adapters for Azure Table, CosmosDb, SQL Azure, or you can implement your own!
// For samples and documentation, see: https://github.com/Microsoft/BotBuilder-Azure
var inMemoryStorage = new builder.MemoryBotStorage();
var bot = new builder.UniversalBot(connector, (session) => {
catalog.getPromotedItem().then(product => {
// Store userId for later, when reading relatedTo to resume dialog with the receipt
var cartId = product.id;
session.conversationData[CartIdKey] = cartId;
session.conversationData[cartId] = session.message.address.user.id;
// Create PaymentRequest obj based on product information
var paymentRequest = createPaymentRequest(cartId, product);
var buyCard = new builder.HeroCard(session)
.title(product.name)
.subtitle(util.format('%s %s', product.currency, product.price))
.text(product.description)
.images([
new builder.CardImage(session).url(product.imageUrl)
])
.buttons([
new builder.CardAction(session)
.title('Buy')
.type(payments.PaymentActionType)
.value(paymentRequest)
]);
session.send(new builder.Message(session)
.addAttachment(buyCard));
});
}).set('storage', inMemoryStorage); // Register in memory storage
bot.set('persistConversationData', true);
connector.onInvoke((invoke, callback) => {
console.log('onInvoke', invoke);
// This is a temporary workaround for the issue that the channelId for "webchat" is mapped to "directline" in the incoming RelatesTo object
invoke.relatesTo.channelId = invoke.relatesTo.channelId === 'directline' ? 'webchat' : invoke.relatesTo.channelId;
var storageCtx = {
address: invoke.relatesTo,
persistConversationData: true,
conversationId: invoke.relatesTo.conversation.id
};
connector.getData(storageCtx, (err, data) => {
var cartId = data.conversationData[CartIdKey];
if (!invoke.relatesTo.user && cartId) {
// Bot keeps the userId in context.ConversationData[cartId]
var userId = data.conversationData[cartId];
invoke.relatesTo.useAuth = true;
invoke.relatesTo.user = { id: userId };
}
// Continue based on PaymentRequest event
var paymentRequest = null;
switch (invoke.name) {
case payments.Operations.UpdateShippingAddressOperation:
case payments.Operations.UpdateShippingOptionOperation:
paymentRequest = invoke.value;
// Validate address AND shipping method (if selected)
checkout
.validateAndCalculateDetails(paymentRequest, paymentRequest.shippingAddress, paymentRequest.shippingOption)
.then(updatedPaymentRequest => {
// return new paymentRequest with updated details
callback(null, updatedPaymentRequest, 200);
}).catch(err => {
// return error to onInvoke handler
callback(err);
// send error message back to user
bot.beginDialog(invoke.relatesTo, 'checkout_failed', {
errorMessage: err.message
});
});
break;
case payments.Operations.PaymentCompleteOperation:
var paymentRequestComplete = invoke.value;
paymentRequest = paymentRequestComplete.paymentRequest;
var paymentResponse = paymentRequestComplete.paymentResponse;
// Validate address AND shipping method
checkout
.validateAndCalculateDetails(paymentRequest, paymentResponse.shippingAddress, paymentResponse.shippingOption)
.then(updatedPaymentRequest =>
// Process Payment
checkout
.processPayment(updatedPaymentRequest, paymentResponse)
.then(chargeResult => {
// return success
callback(null, { result: "success" }, 200);
// send receipt to user
bot.beginDialog(invoke.relatesTo, 'checkout_receipt', {
paymentRequest: updatedPaymentRequest,
chargeResult: chargeResult
});
})
).catch(err => {
// return error to onInvoke handler
callback(err);
// send error message back to user
bot.beginDialog(invoke.relatesTo, 'checkout_failed', {
errorMessage: err.message
});
});
break;
}
});
});
bot.dialog('checkout_receipt', function (session, args) {
console.log('checkout_receipt', args);
cleanupConversationData(session);
var paymentRequest = args.paymentRequest;
var chargeResult = args.chargeResult;
var shippingAddress = chargeResult.shippingAddress;
var shippingOption = chargeResult.shippingOption;
var orderId = chargeResult.orderId;
// send receipt card
var items = paymentRequest.details.displayItems
.map(o => builder.ReceiptItem.create(session, o.amount.currency + ' ' + o.amount.value, o.label));
var receiptCard = new builder.ReceiptCard(session)
.title('Contoso Order Receipt')
.facts([
builder.Fact.create(session, orderId, 'Order ID'),
builder.Fact.create(session, chargeResult.methodName, 'Payment Method'),
builder.Fact.create(session, [shippingAddress.addressLine, shippingAddress.city, shippingAddress.region, shippingAddress.country].join(', '), 'Shipping Address'),
builder.Fact.create(session, shippingOption, 'Shipping Option')
])
.items(items)
.total(paymentRequest.details.total.amount.currency + ' ' + paymentRequest.details.total.amount.value);
session.endDialog(
new builder.Message(session)
.addAttachment(receiptCard));
});
bot.dialog('checkout_failed', function (session, args) {
cleanupConversationData(session);
session.endDialog('Could not process your payment: %s', args.errorMessage);
});
// PaymentRequest with default options
function createPaymentRequest(cartId, product) {
if (!cartId) {
throw new Error('cartId is missing');
}
if (!product) {
throw new Error('product is missing');
}
// PaymentMethodData[]
var paymentMethods = [{
supportedMethods: [payments.MicrosoftPayMethodName],
data: {
mode: process.env.PAYMENTS_LIVEMODE === 'true' ? null : 'TEST',
merchantId: process.env.PAYMENTS_MERCHANT_ID,
supportedNetworks: ['visa', 'mastercard'],
supportedTypes: ['credit']
}
}];
// PaymentDetails
var paymentDetails = {
total: {
label: 'Total',
amount: { currency: product.currency, value: product.price.toFixed(2) },
pending: true
},
displayItems: [
{
label: product.name,
amount: { currency: product.currency, value: product.price.toFixed(2) }
}, {
label: 'Shipping',
amount: { currency: product.currency, value: '0.00' },
pending: true
}, {
label: 'Sales Tax',
amount: { currency: product.currency, value: '0.00' },
pending: true
}],
// until a shipping address is selected, we can't offer shipping options or calculate taxes or shipping costs
shippingOptions: []
};
// PaymentOptions
var paymentOptions = {
requestPayerName: true,
requestPayerEmail: true,
requestPayerPhone: true,
requestShipping: true,
shippingType: 'shipping'
};
// PaymentRequest
return {
id: cartId,
expires: '1.00:00:00', // 1 day
methodData: paymentMethods, // paymethodMethods: paymentMethods,
details: paymentDetails, // paymentDetails: paymentDetails,
options: paymentOptions // paymentOptions: paymentOptions
};
}
function cleanupConversationData(session) {
var cartId = session.conversationData[CartIdKey];
delete session.conversationData[CartIdKey];
delete session.conversationData[cartId];
}