Adds save device name in shared preferences and check device exist or no.

ui/src/main/java/com/wireguard/android/activity/LoginActivity.java

@@ -67,35 +67,41 @@ public class LoginActivity extends AppCompatActivity {
     private void login(String username, String password) {
         loginViewModel.login(username,password,this).observe(this, new Observer<StatusResource<User>>() {
             @Override public void onChanged(final StatusResource<User> userStatusResource) {
-                switch (userStatusResource.status){
+                switch (userStatusResource.status) {
                     case SUCCESS:
-                        loginViewModel.addDevice(LoginActivity.this).observe(LoginActivity.this, new Observer<StatusResource<Device>>() {
-                            @Override public void onChanged(final StatusResource<Device> deviceStatusResource) {
-                                switch (deviceStatusResource.status){
-                                    case SUCCESS:
-                                        closeLoadingDialog();
-                                        Toast.makeText(LoginActivity.this,"Success",Toast.LENGTH_SHORT).show();
-                                        Log.d("TAG","Success");
-                                        break;
-                                    case LOADING:
-                                        Log.d("TAG","Loading");
-                                        break;
-                                    case ERROR:
-                                        Toast.makeText(LoginActivity.this,"Login Failed",Toast.LENGTH_SHORT).show();
-                                        Log.d("TAG","Error");
-                                        break;
+                        if (loginViewModel.isDeviceLoggedIn(LoginActivity.this)) {
+                            Toast.makeText(LoginActivity.this, "Success", Toast.LENGTH_SHORT).show();
+                            Log.d("TAG", "Success");
+                            closeLoadingDialog();
+                        } else {
+                            loginViewModel.addDevice(LoginActivity.this).observe(LoginActivity.this, new Observer<StatusResource<Device>>() {
+                                @Override public void onChanged(final StatusResource<Device> deviceStatusResource) {
+                                    switch (deviceStatusResource.status) {
+                                        case SUCCESS:
+                                            closeLoadingDialog();
+                                            Toast.makeText(LoginActivity.this, "Success", Toast.LENGTH_SHORT).show();
+                                            Log.d("TAG", "Success");
+                                            break;
+                                        case LOADING:
+                                            Log.d("TAG", "Loading");
+                                            break;
+                                        case ERROR:
+                                            Toast.makeText(LoginActivity.this, "Login Failed", Toast.LENGTH_SHORT).show();
+                                            Log.d("TAG", "Error");
+                                            break;
+                                    }
                                 }
-                            }
-                        });
-                        Log.d("TAG","Success");
-                        break;
-                    case LOADING:
-                        Log.d("TAG","Loading");
-                        break;
-                    case ERROR:
-                        Toast.makeText(LoginActivity.this,"Login Failed",Toast.LENGTH_SHORT).show();
-                        Log.d("TAG","Error");
-                        break;
+                            });
+                        }
+                            Log.d("TAG", "Success");
+                            break;
+                            case LOADING:
+                                Log.d("TAG", "Loading");
+                                break;
+                            case ERROR:
+                                Toast.makeText(LoginActivity.this, "Login Failed", Toast.LENGTH_SHORT).show();
+                                Log.d("TAG", "Error");
+                                break;
                 }
             }
         });

ui/src/main/java/com/wireguard/android/repository/DataRepository.java

@@ -125,6 +125,7 @@ public class DataRepository {
                                         if(deviceNameItem.length>1){
                                             if(deviceNameItem[0].contains(myDeviceName[0]) && deviceNameItem[1].contains(myDeviceName[1])){
                                                 setMutableLiveData(StatusResource.success());
+                                                UserStore.getInstance(context).setDevice(device.getName());
                                                 flag = false;
                                                 break;
                                             }
@@ -148,6 +149,7 @@ public class DataRepository {
                                             clientApi.addDevice(header, body).enqueue(new Callback<Device>() {
                                                 @Override public void onResponse(final Call<Device> call, final Response<Device> response) {
                                                     if (response.isSuccessful()) {
+                                                        UserStore.getInstance(context).setDevice(response.body().getName());
                                                         setMutableLiveData(StatusResource.success());
                                                     } else {
                                                         final String errorMessage = createErrorMessage(call, response);
@@ -192,6 +194,7 @@ public class DataRepository {
                                                 clientApi.addDevice(header, body).enqueue(new Callback<Device>() {
                                                     @Override public void onResponse(final Call<Device> call, final Response<Device> response) {
                                                         if (response.isSuccessful()) {
+                                                            UserStore.getInstance(context).setDevice(response.body().getName());
                                                             setMutableLiveData(StatusResource.success());
                                                         } else {
                                                             final String errorMessage = createErrorMessage(call, response);
@@ -253,4 +256,8 @@ public class DataRepository {
     private String getDeviceModel(){
         return Build.MODEL;
     }
+
+    public boolean isDeviceLoggedIn(Context context){
+        return !UserStore.DEVICE_DEFAULT_VALUE.equals(UserStore.getInstance(context).getDevice());
+    }
 }

ui/src/main/java/com/wireguard/android/util/UserStore.java

@@ -9,7 +9,9 @@ public class UserStore {
 
     private static final String USER_SHARED_PREF = "com.wireguard.android.util.bubbleUserSharedPref";
     private static final String USER_DATA_KEY = "com.wireguard.android.util.bubbleUserResponse";
+    private static final String DEVICE_DATA_KEY = "com.wireguard.android.util.bubbleDeviceResponse";
     public  static final String USER_TOKEN_DEFAULT_VALUE = "";
+    public static final String DEVICE_DEFAULT_VALUE = "";
 
     public static UserStore getInstance(Context context) {
         if (instance == null) {
@@ -35,4 +37,11 @@ public class UserStore {
         return sharedPreferences.getString(USER_DATA_KEY, USER_TOKEN_DEFAULT_VALUE);
     }
 
+    public void setDevice(String device){
+        sharedPreferences.edit().putString(DEVICE_DATA_KEY, device).apply();
+    }
+
+    public String getDevice(){
+        return sharedPreferences.getString(DEVICE_DATA_KEY, DEVICE_DEFAULT_VALUE);
+    }
 }

ui/src/main/java/com/wireguard/android/viewmodel/LoginViewModel.java

@@ -24,4 +24,8 @@ public class LoginViewModel extends ViewModel {
     public LiveData<StatusResource<Device>> addDevice(Context context){
         return DataRepository.getRepositoryInstance().addDevice(context);
     }
+
+    public boolean isDeviceLoggedIn(Context context){
+        return DataRepository.getRepositoryInstance().isDeviceLoggedIn(context);
+    }
 }