This is a part of an online Codename One course published around 2017 see it all for free at https://debugagent.com/series/cn1

1. Restaurant Server

2. Restaurant Server
✦I will not go into all of the details because many
pieces are mundane and boring
✦The server portion is relatively easier when we have a
client ready but there is a lot of hidden complexity
✦This is especially true when it comes to security
which is often unintuitive
© Codename One 2017 all rights reserved

3. Standard Spring Boot project
✦We’ll create pretty much the same spring boot project
we created in the spring boot tutorial
✦I’ll go with a new Database URL to start fresh and
new project name “AppBackendServer”. The generic
name makes sense for the app maker…
✦My goal isn’t to win an “architecture award” but to
create the bare minimum server within reason
© Codename One 2017 all rights reserved

4. <dependency>
<groupId>com.braintreepayments.gateway</groupId>
<artifactId>braintree-java</artifactId>
<version>2.71.0</version>
</dependency>
BrainTree Support - pom.xml

5. @Controller
@RequestMapping("/braintree")
public class BraintreePaymentService {
@Autowired
private RestaurantRepository restaurantRepository;
@Autowired
private OrderRepository orderRepository;
private WeakHashMap<String, BraintreeGateway> gatewayCache = new WeakHashMap<>();
private BraintreeGateway getGateway(String auth) {
BraintreeGateway bg = gatewayCache.get(auth);
if(bg != null) {
return bg;
}
RestaurantEntity r = restaurantRepository.findOne(auth);
if(r != null) {
bg = new BraintreeGateway(
Environment.SANDBOX,
r.getMerchantId(),
r.getPublicKey(),
r.getPrivateKey()
);
gatewayCache.put(auth, bg);
return bg;
}
return null;
}
BraintreePaymentService

6. @Controller
@RequestMapping("/braintree")
public class BraintreePaymentService {
@Autowired
private RestaurantRepository restaurantRepository;
@Autowired
private OrderRepository orderRepository;
private WeakHashMap<String, BraintreeGateway> gatewayCache = new WeakHashMap<>();
private BraintreeGateway getGateway(String auth) {
BraintreeGateway bg = gatewayCache.get(auth);
if(bg != null) {
return bg;
}
RestaurantEntity r = restaurantRepository.findOne(auth);
if(r != null) {
bg = new BraintreeGateway(
Environment.SANDBOX,
r.getMerchantId(),
r.getPublicKey(),
r.getPrivateKey()
);
gatewayCache.put(auth, bg);
return bg;
}
return null;
}
BraintreePaymentService

7. @RequestMapping(method=RequestMethod.GET)
public @ResponseBody String getToken(@RequestParam(name = "auth") String auth) {
return getGateway(auth).clientToken().generate();
}
@RequestMapping(method=RequestMethod.POST)
public @ResponseBody PurchaseResult purchase(@RequestBody(required=true) Order i) {
TransactionRequest request = new TransactionRequest()
.amount(i.calculateAmount())
.paymentMethodNonce(i.getNounce())
.options()
.submitForSettlement(true)
.done();
Result<Transaction> result = getGateway(i.getAuth()).transaction().sale(request);
if(result.isSuccess()) {
// Store entry and email restaurant
}
return new PurchaseResult(result.isSuccess(), result.getMessage());
}
}
BraintreePaymentService

8. @RequestMapping(method=RequestMethod.GET)
public @ResponseBody String getToken(@RequestParam(name = "auth") String auth) {
return getGateway(auth).clientToken().generate();
}
@RequestMapping(method=RequestMethod.POST)
public @ResponseBody PurchaseResult purchase(@RequestBody(required=true) Order i) {
TransactionRequest request = new TransactionRequest()
.amount(i.calculateAmount())
.paymentMethodNonce(i.getNounce())
.options()
.submitForSettlement(true)
.done();
Result<Transaction> result = getGateway(i.getAuth()).transaction().sale(request);
if(result.isSuccess()) {
// Store entry and email restaurant
}
return new PurchaseResult(result.isSuccess(), result.getMessage());
}
}
BraintreePaymentService

9. @RequestMapping(method=RequestMethod.GET)
public @ResponseBody String getToken(@RequestParam(name = "auth") String auth) {
return getGateway(auth).clientToken().generate();
}
@RequestMapping(method=RequestMethod.POST)
public @ResponseBody PurchaseResult purchase(@RequestBody(required=true) Order i) {
TransactionRequest request = new TransactionRequest()
.amount(i.calculateAmount())
.paymentMethodNonce(i.getNounce())
.options()
.submitForSettlement(true)
.done();
Result<Transaction> result = getGateway(i.getAuth()).transaction().sale(request);
if(result.isSuccess()) {
// Store entry and email restaurant
}
return new PurchaseResult(result.isSuccess(), result.getMessage());
}
}
BraintreePaymentService

10. @RequestMapping(method=RequestMethod.GET)
public @ResponseBody String getToken(@RequestParam(name = "auth") String auth) {
return getGateway(auth).clientToken().generate();
}
@RequestMapping(method=RequestMethod.POST)
public @ResponseBody PurchaseResult purchase(@RequestBody(required=true) Order i) {
TransactionRequest request = new TransactionRequest()
.amount(i.calculateAmount())
.paymentMethodNonce(i.getNounce())
.options()
.submitForSettlement(true)
.done();
Result<Transaction> result = getGateway(i.getAuth()).transaction().sale(request);
if(result.isSuccess()) {
// Store entry and email restaurant
}
return new PurchaseResult(result.isSuccess(), result.getMessage());
}
}
BraintreePaymentService

11. @Entity
@Table(name="Restaurant")
public class RestaurantEntity {
@Id
private String id;
private String name;
private String merchantId;
private String publicKey;
private String privateKey;
private double currentVersionIOS = 1.0;
private double lastSupportedVersionIOS = 0;
private double currentVersionAnd = 1.0;
private double lastSupportedVersionAnd = 0;
private double currentVersionUWP = 1.0;
private double lastSupportedVersionUWP = 0;
private long dishListUpdateTimestamp = 1;
private String restaurantEmail;
@OneToMany
private Set<DishEntity> dishes;
@OneToMany
private Set<CategoryEntity> categories;
public RestaurantEntity() {
id = UUID.randomUUID().toString();
}
RestaurantEntity

12. @Entity
@Table(name="Purchases")
public class OrderEntity {
@Id
private String id;
@OneToMany
private Set<OrderLineEntity> dishQuanity;
private Date date;
private String notes;
public OrderEntity() {
id = UUID.randomUUID().toString();
}
OrderEntity vs. dao Order
public class Order {
private String id;
private Date date;
private boolean purchased;
private Map<Dish, Integer> dishQuantity = new
HashMap<>();
private String notes;
private String nounce;
private String auth;
public BigDecimal calculateAmount() {
BigDecimal b = BigDecimal.ZERO;
for(Map.Entry<Dish, Integer> d :
dishQuantity.entrySet()) {
b = b.add(new BigDecimal(
d.getValue() *
d.getKey().
getPrice()));
}
return b;
}

13. @Controller
@RequestMapping("/ver")
public class VersionService {
@Autowired
private RestaurantRepository restaurantRepository;
@RequestMapping(method=RequestMethod.GET)
public @ResponseBody AppVersion getKey(@RequestParam(value="os", required=true) String os,
@RequestParam(value="appId", required=true) String appId) {
RestaurantEntity r = restaurantRepository.findOne(appId);
switch(os) {
case "ios":
return new AppVersion(r.getCurrentVersionIOS(), r.getLastSupportedVersionIOS());
case "and":
return new AppVersion(r.getCurrentVersionAnd(), r.getLastSupportedVersionAnd());
case "win":
return new AppVersion(r.getCurrentVersionUWP(), r.getLastSupportedVersionUWP());
}
return null;
}
}
VersionService

14. Thank You