The document outlines the implementation details of a billing service for an Uber clone app using Braintree. It describes how rides are charged $1 per minute, emphasizes the use of Braintree for payment processing, and includes code snippets for managing ride payments, generating client tokens, and saving payment nonces. Additionally, it covers the process for accepting rides and finishing them, calculating the cost based on ride duration.

1. Creating an Uber Clone - Part XXXI

2. Billing
✦A bit different from the native Uber app
✦To keep billing simple I'll just charge $1 per minute
✦I won’t use in-app-purchase
✦I’ll use Braintree
© Codename One 2017 all rights reserved

3. Braintree
© Codename One 2017 all rights reserved

4. Braintree
© Codename One 2017 all rights reserved

5. Braintree
© Codename One 2017 all rights reserved

6. Braintree
© Codename One 2017 all rights reserved

7. Braintree
© Codename One 2017 all rights reserved

8. <dependency>
<groupId>com.braintreepayments.gateway</groupId>
<artifactId>braintree-java</artifactId>
<version>2.71.0</version>
</dependency>
POM

9. @Service
public class BraintreeService {
private final static BraintreeGateway gateway = new BraintreeGateway(
Environment.SANDBOX,
"your_merchant_id",
"your_public_key",
"your_private_key"
);
@Autowired
private RideRepository rides;
public String getClientToken() {
return gateway.clientToken().generate();
}
public void saveNonce(long rideId, String nonce) {
Ride r = rides.findOne(rideId);
r.setNonce(nonce);
rides.save(r);
}
public void pay(BigDecimal amount, String nonce) {
TransactionRequest requestT = new TransactionRequest()
.amount(amount)
.paymentMethodNonce(nonce)
.options()
.submitForSettlement(true)
.done();
}
}
BraintreeService

10. @Service
public class BraintreeService {
private final static BraintreeGateway gateway = new BraintreeGateway(
Environment.SANDBOX,
"your_merchant_id",
"your_public_key",
"your_private_key"
);
@Autowired
private RideRepository rides;
public String getClientToken() {
return gateway.clientToken().generate();
}
public void saveNonce(long rideId, String nonce) {
Ride r = rides.findOne(rideId);
r.setNonce(nonce);
rides.save(r);
}
public void pay(BigDecimal amount, String nonce) {
TransactionRequest requestT = new TransactionRequest()
.amount(amount)
.paymentMethodNonce(nonce)
.options()
.submitForSettlement(true)
.done();
}
}
BraintreeService

11. @Service
public class BraintreeService {
private final static BraintreeGateway gateway = new BraintreeGateway(
Environment.SANDBOX,
"your_merchant_id",
"your_public_key",
"your_private_key"
);
@Autowired
private RideRepository rides;
public String getClientToken() {
return gateway.clientToken().generate();
}
public void saveNonce(long rideId, String nonce) {
Ride r = rides.findOne(rideId);
r.setNonce(nonce);
rides.save(r);
}
public void pay(BigDecimal amount, String nonce) {
TransactionRequest requestT = new TransactionRequest()
.amount(amount)
.paymentMethodNonce(nonce)
.options()
.submitForSettlement(true)
.done();
}
}
BraintreeService

12. @Controller
@RequestMapping("/pay")
public class BraintreeWebservice {
@Autowired
private BraintreeService payment;
@RequestMapping(method=RequestMethod.GET,value = "/token")
public @ResponseBody String getClientToken(long id) {
return payment.getClientToken();
}
@RequestMapping(method=RequestMethod.GET,value="/nonce")
public @ResponseBody String nonce(
@RequestParam(name="ride", required = true) long rideId,
@RequestParam(name="nonce", required = true) String nonce) {
payment.saveNonce(rideId, nonce);
return "OK";
}
}
BraintreeWebservice

13. private String nonce;
public String getNonce() {
return nonce;
}
public void setNonce(String nonce) {
this.nonce = nonce;
}
Ride

14. private Long currentRide;
public Long getCurrentRide() {
return currentRide;
}
public void setCurrentRide(Long currentRide) {
this.currentRide = currentRide;
}
Ride

15. public long acceptRide(String token, long userId) {
User driver = users.findByAuthToken(token).get(0);
User passenger = users.findOne(userId);
if(!passenger.isHailing()) {
throw new RuntimeException("Not hailing");
}
passenger.setHailing(false);
passenger.setAssignedUser(driver.getId());
driver.setAssignedUser(userId);
Ride r = new Ride();
r.setDriver(driver);
r.setPassenger(passenger);
rides.save(r);
driver.setCurrentRide(r.getId());
passenger.setCurrentRide(r.getId());
users.save(driver);
users.save(passenger);
return r.getId();
}
acceptRide

16. public long acceptRide(String token, long userId) {
User driver = users.findByAuthToken(token).get(0);
User passenger = users.findOne(userId);
if(!passenger.isHailing()) {
throw new RuntimeException("Not hailing");
}
passenger.setHailing(false);
passenger.setAssignedUser(driver.getId());
driver.setAssignedUser(userId);
Ride r = new Ride();
r.setDriver(driver);
r.setPassenger(passenger);
rides.save(r);
driver.setCurrentRide(r.getId());
passenger.setCurrentRide(r.getId());
users.save(driver);
users.save(passenger);
return r.getId();
}
acceptRide

17. public void finishRide(long rideId) {
Ride current = rides.findOne(rideId);
current.setFinished(true);
if(current.isStarted() && current.getNonce() != null) {
Set<Waypoint> s = current.getRoute();
Iterator<Waypoint> i = s.iterator();
if(i.hasNext()) {
long startTime = i.next().getTime();
long endTime = -1;
while(i.hasNext()) {
endTime = i.next().getTime();
}
if(endTime > -1) {
BigDecimal cost = BigDecimal.valueOf(endTime - startTime).
divide(BigDecimal.valueOf(60000));
current.setCost(cost);
payments.pay(current.getCost(), current.getNonce());
}
}
}
rides.save(current);
}
finishRide

18. public void finishRide(long rideId) {
Ride current = rides.findOne(rideId);
current.setFinished(true);
if(current.isStarted() && current.getNonce() != null) {
Set<Waypoint> s = current.getRoute();
Iterator<Waypoint> i = s.iterator();
if(i.hasNext()) {
long startTime = i.next().getTime();
long endTime = -1;
while(i.hasNext()) {
endTime = i.next().getTime();
}
if(endTime > -1) {
BigDecimal cost = BigDecimal.valueOf(endTime - startTime).
divide(BigDecimal.valueOf(60000));
current.setCost(cost);
payments.pay(current.getCost(), current.getNonce());
}
}
}
rides.save(current);
}
finishRide

19. public void finishRide(long rideId) {
Ride current = rides.findOne(rideId);
current.setFinished(true);
if(current.isStarted() && current.getNonce() != null) {
Set<Waypoint> s = current.getRoute();
Iterator<Waypoint> i = s.iterator();
if(i.hasNext()) {
long startTime = i.next().getTime();
long endTime = -1;
while(i.hasNext()) {
endTime = i.next().getTime();
}
if(endTime > -1) {
BigDecimal cost = BigDecimal.valueOf(endTime - startTime).
divide(BigDecimal.valueOf(60000));
current.setCost(cost);
payments.pay(current.getCost(), current.getNonce());
}
}
}
rides.save(current);
}
finishRide

20. public void finishRide(long rideId) {
Ride current = rides.findOne(rideId);
current.setFinished(true);
if(current.isStarted() && current.getNonce() != null) {
Set<Waypoint> s = current.getRoute();
Iterator<Waypoint> i = s.iterator();
if(i.hasNext()) {
long startTime = i.next().getTime();
long endTime = -1;
while(i.hasNext()) {
endTime = i.next().getTime();
}
if(endTime > -1) {
BigDecimal cost = BigDecimal.valueOf(endTime - startTime).
divide(BigDecimal.valueOf(60000));
current.setCost(cost);
payments.pay(current.getCost(), current.getNonce());
}
}
}
rides.save(current);
}
finishRide