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. Creating an Uber Clone - Part XXV

2. LocationService
✦Mark hailing in websocket code
✦Server checks available area
✦Send push notifications to available drivers
✦Expand the circle of search
© Codename One 2017 all rights reserved

3. public static final String CODENAME_ONE_PUSH_KEY = "----";
public static final String GOOGLE_PUSH_AUTH_KEY = "----";
public static final String APNS_DEV_PUSH_CERT = "----";
public static final String APNS_PROD_PUSH_CERT = "----";
public static final String APNS_DEV_PUSH_PASS = "----";
public static final String APNS_PROD_PUSH_PASS = "----";
public static final boolean APNS_PRODUCTION = false;
Globals

4. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

5. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

6. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

7. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

8. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

9. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

10. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

11. private static final short MESSAGE_TYPE_DRIVER_FOUND = 4;
private static final short HAILING_OFF = 0;
private static final short HAILING_ON = 1;
private static final short HAILING_TURN_OFF = 2;
private static LocationService instance;
private int hailing;
private Motion halingRadius;
private String from;
private String to;
private List<String> notificationList;
private long driverId;
private CarAdded driverFound;
LocationService

12. if(ll == lon && lt == lat && dir == direction && hailing == HAILING_OFF) {
// no need to do an update
return;
}
sendLocationUpdate

13. dos.writeDouble(lat);
dos.writeDouble(lon);
dos.writeFloat(dir);
if(hailing == HAILING_ON) {
dos.writeDouble(((double)halingRadius.getValue()) / 1000.0);
dos.writeByte(HAILING_ON);
byte[] fromBytes = from.getBytes("UTF-8");
byte[] toBytes = to.getBytes("UTF-8");
dos.writeShort(fromBytes.length);
dos.write(fromBytes);
dos.writeShort(toBytes.length);
dos.write(toBytes);
} else {
dos.writeDouble(1);
dos.writeByte(hailing);
if(hailing == HAILING_TURN_OFF) {
hailing = HAILING_OFF;
}
}
dos.flush();
send(bos.toByteArray());
} catch(IOException err) {
Log.e(err);
}
sendLocationUpdate

14. dos.writeDouble(lat);
dos.writeDouble(lon);
dos.writeFloat(dir);
if(hailing == HAILING_ON) {
dos.writeDouble(((double)halingRadius.getValue()) / 1000.0);
dos.writeByte(HAILING_ON);
byte[] fromBytes = from.getBytes("UTF-8");
byte[] toBytes = to.getBytes("UTF-8");
dos.writeShort(fromBytes.length);
dos.write(fromBytes);
dos.writeShort(toBytes.length);
dos.write(toBytes);
} else {
dos.writeDouble(1);
dos.writeByte(hailing);
if(hailing == HAILING_TURN_OFF) {
hailing = HAILING_OFF;
}
}
dos.flush();
send(bos.toByteArray());
} catch(IOException err) {
Log.e(err);
}
sendLocationUpdate

15. dos.writeDouble(lat);
dos.writeDouble(lon);
dos.writeFloat(dir);
if(hailing == HAILING_ON) {
dos.writeDouble(((double)halingRadius.getValue()) / 1000.0);
dos.writeByte(HAILING_ON);
byte[] fromBytes = from.getBytes("UTF-8");
byte[] toBytes = to.getBytes("UTF-8");
dos.writeShort(fromBytes.length);
dos.write(fromBytes);
dos.writeShort(toBytes.length);
dos.write(toBytes);
} else {
dos.writeDouble(1);
dos.writeByte(hailing);
if(hailing == HAILING_TURN_OFF) {
hailing = HAILING_OFF;
}
}
dos.flush();
send(bos.toByteArray());
} catch(IOException err) {
Log.e(err);
}
sendLocationUpdate

16. dos.writeDouble(lat);
dos.writeDouble(lon);
dos.writeFloat(dir);
if(hailing == HAILING_ON) {
dos.writeDouble(((double)halingRadius.getValue()) / 1000.0);
dos.writeByte(HAILING_ON);
byte[] fromBytes = from.getBytes("UTF-8");
byte[] toBytes = to.getBytes("UTF-8");
dos.writeShort(fromBytes.length);
dos.write(fromBytes);
dos.writeShort(toBytes.length);
dos.write(toBytes);
} else {
dos.writeDouble(1);
dos.writeByte(hailing);
if(hailing == HAILING_TURN_OFF) {
hailing = HAILING_OFF;
}
}
dos.flush();
send(bos.toByteArray());
} catch(IOException err) {
Log.e(err);
}
sendLocationUpdate

17. dos.writeDouble(lat);
dos.writeDouble(lon);
dos.writeFloat(dir);
if(hailing == HAILING_ON) {
dos.writeDouble(((double)halingRadius.getValue()) / 1000.0);
dos.writeByte(HAILING_ON);
byte[] fromBytes = from.getBytes("UTF-8");
byte[] toBytes = to.getBytes("UTF-8");
dos.writeShort(fromBytes.length);
dos.write(fromBytes);
dos.writeShort(toBytes.length);
dos.write(toBytes);
} else {
dos.writeDouble(1);
dos.writeByte(hailing);
if(hailing == HAILING_TURN_OFF) {
hailing = HAILING_OFF;
}
}
dos.flush();
send(bos.toByteArray());
} catch(IOException err) {
Log.e(err);
}
sendLocationUpdate

18. @Override
protected void onMessage(byte[] bytes) {
try {
DataInputStream dis = new DataInputStream(new ByteArrayInputStream(bytes));
short response = dis.readShort();
if(response == MESSAGE_TYPE_DRIVER_FOUND) {
driverId = dis.readLong();
User u = cars.get(driverId);
if(u == null) {
u = new User().id.set(driverId);
cars.put(driverId, u);
}
u.car.set(dis.readUTF()).
givenName.set(dis.readUTF()).
surname.set(dis.readUTF()).
currentRating.set(dis.readFloat());
final User finalUser = u;
callSerially(() -> driverFound.carAdded(finalUser));
return;
}
int size = dis.readInt();
List<String> sendPush = null;
for(int iter = 0 ; iter < size ; iter++) {
onMessage

19. @Override
protected void onMessage(byte[] bytes) {
try {
DataInputStream dis = new DataInputStream(new ByteArrayInputStream(bytes));
short response = dis.readShort();
if(response == MESSAGE_TYPE_DRIVER_FOUND) {
driverId = dis.readLong();
User u = cars.get(driverId);
if(u == null) {
u = new User().id.set(driverId);
cars.put(driverId, u);
}
u.car.set(dis.readUTF()).
givenName.set(dis.readUTF()).
surname.set(dis.readUTF()).
currentRating.set(dis.readFloat());
final User finalUser = u;
callSerially(() -> driverFound.carAdded(finalUser));
return;
}
int size = dis.readInt();
List<String> sendPush = null;
for(int iter = 0 ; iter < size ; iter++) {
onMessage

20. List<String> sendPush = null;
for(int iter = 0 ; iter < size ; iter++) {
long id = dis.readLong();
User car = cars.get(id);
if(car == null) {
car = new User().
id.set(id).
latitude.set(dis.readDouble()).
longitude.set(dis.readDouble()).
direction.set(dis.readFloat()).
pushToken.set(dis.readUTF());
cars.put(id, car);
User finalCar = car;
callSerially(() -> carCallback.carAdded(finalCar));
} else {
car.latitude.set(dis.readDouble()).
longitude.set(dis.readDouble()).
direction.set(dis.readFloat()).
pushToken.set(dis.readUTF());
}
if(hailing==HAILING_ON && response==MESSAGE_TYPE_AVAILBLE_DRIVER_POSITIONS){
if(!notificationList.contains(car.pushToken.get())) {
notificationList.add(car.pushToken.get());
onMessage

21. if(hailing==HAILING_ON && response==MESSAGE_TYPE_AVAILBLE_DRIVER_POSITIONS){
if(!notificationList.contains(car.pushToken.get())) {
notificationList.add(car.pushToken.get());
if(sendPush == null) {
sendPush = new ArrayList<>();
}
sendPush.add(car.pushToken.get());
}
}
}
if(sendPush != null) {
String[] devices = new String[sendPush.size()];
sendPush.toArray(devices);
String apnsCert = APNS_DEV_PUSH_CERT;
String apnsPass = APNS_DEV_PUSH_PASS;
if(APNS_PRODUCTION) {
apnsCert = APNS_PROD_PUSH_CERT;
apnsPass = APNS_PROD_PUSH_PASS;
}
new Push(CODENAME_ONE_PUSH_KEY,
"#" + UserService.getUser().id.getLong() +
";Ride pending from: " + from + " to: " + to,
devices).
onMessage

22. if(hailing==HAILING_ON && response==MESSAGE_TYPE_AVAILBLE_DRIVER_POSITIONS){
if(!notificationList.contains(car.pushToken.get())) {
notificationList.add(car.pushToken.get());
if(sendPush == null) {
sendPush = new ArrayList<>();
}
sendPush.add(car.pushToken.get());
}
}
}
if(sendPush != null) {
String[] devices = new String[sendPush.size()];
sendPush.toArray(devices);
String apnsCert = APNS_DEV_PUSH_CERT;
String apnsPass = APNS_DEV_PUSH_PASS;
if(APNS_PRODUCTION) {
apnsCert = APNS_PROD_PUSH_CERT;
apnsPass = APNS_PROD_PUSH_PASS;
}
new Push(CODENAME_ONE_PUSH_KEY,
"#" + UserService.getUser().id.getLong() +
";Ride pending from: " + from + " to: " + to,
devices).
onMessage

23. }
}
if(sendPush != null) {
String[] devices = new String[sendPush.size()];
sendPush.toArray(devices);
String apnsCert = APNS_DEV_PUSH_CERT;
String apnsPass = APNS_DEV_PUSH_PASS;
if(APNS_PRODUCTION) {
apnsCert = APNS_PROD_PUSH_CERT;
apnsPass = APNS_PROD_PUSH_PASS;
}
new Push(CODENAME_ONE_PUSH_KEY,
"#" + UserService.getUser().id.getLong() +
";Ride pending from: " + from + " to: " + to,
devices).
pushType(3).
apnsAuth(apnsCert, apnsPass, APNS_PRODUCTION).
gcmAuth(GOOGLE_PUSH_AUTH_KEY).sendAsync();
}
} catch(IOException err) {
Log.e(err);
}
}
onMessage

24. public final Property<String, User> pushToken = new Property<>("pushToken");
private final PropertyIndex idx = new PropertyIndex(this, "User", id, givenName,
surname, phone, email, facebookId, googleId, driver, car, currentRating,
latitude, longitude, direction, authToken, password, pushToken);
User

25. public static void hailRide(String from, String to, CarAdded callback) {
instance.driverFound = callback;
instance.from = from;
instance.to = to;
instance.notificationList = new ArrayList<>();
instance.halingRadius = Motion.createLinearMotion(500, 2000, 30000);
instance.halingRadius.start();
instance.hailing = HAILING_ON;
instance.server.sendLocationUpdate();
}
hailRide