app/src/main/java/com/stormtales/notevault/network/StatusResponse.java

@@ -0,0 +1,14 @@
+package com.stormtales.notevault.network;
+
+public class StatusResponse {
+
+    private String status;
+
+    public String getStatus() {
+        return status;
+    }
+
+    public void setStatus(String status) {
+        this.status = status;
+    }
+}

app/src/main/java/com/stormtales/notevault/network/auth/AuthAPI.java

@@ -1,5 +1,6 @@
 package com.stormtales.notevault.network.auth;
 
+import com.stormtales.notevault.network.StatusResponse;
 import retrofit2.Call;
 import retrofit2.http.Body;
 import retrofit2.http.Headers;
@@ -10,7 +11,7 @@ public interface AuthAPI {
     @POST("/login/")
     Call<LoginResponse> login(@Body LoginRequest loginRequest);
 
-    /*@POST("/register/")
+    @POST("/register/")
     @Headers("Content-Type: application/json")
-    Call<StatusResponse> registration(@Body RegisterRequest registerRequest);*/
+    Call<StatusResponse> registration(@Body RegisterRequest registerRequest);
 }

app/src/main/java/com/stormtales/notevault/network/auth/AuthService.java

@@ -4,6 +4,7 @@ import android.content.Context;
 import android.text.TextUtils;
 import com.stormtales.notevault.network.APICallback;
 import com.stormtales.notevault.network.NetworkModule;
+import com.stormtales.notevault.network.StatusResponse;
 import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
@@ -44,8 +45,8 @@ public class AuthService {
     }
 
     public void performRegistration(String email, String username, String password, APICallback callback) {
-        /*RegisterRequest registerRequest = new RegisterRequest(username, password, email);
-        authService.registration(registerRequest).enqueue(new Callback<StatusResponse>() {
+        RegisterRequest registerRequest = new RegisterRequest(username, password, email);
+        authAPI.registration(registerRequest).enqueue(new Callback<StatusResponse>() {
 
             @Override
             public void onResponse(Call<StatusResponse> call, Response<StatusResponse> response) {
@@ -60,7 +61,7 @@ public class AuthService {
             public void onFailure(Call<StatusResponse> call, Throwable throwable) {
                 callback.onError("Netzwerkfehler: " + throwable.getMessage());
             }
-        });*/
+        });
     }
 
     private void saveToken(String token) {

app/src/main/java/com/stormtales/notevault/network/auth/RegisterRequest.java

@@ -0,0 +1,14 @@
+package com.stormtales.notevault.network.auth;
+
+public class RegisterRequest {
+    private String username;
+    private String email;
+    private String password;
+
+    public RegisterRequest(String username, String password, String email) {
+        this.username = username;
+        this.password = password;
+        this.email = email;
+    }
+
+}

app/src/main/java/com/stormtales/notevault/ui/login/LoginDialog.java

@@ -33,6 +33,8 @@ public class LoginDialog extends DialogFragment {
     private EditText editTextUsername;
     private EditText editTextPassword;
     private EditText editTextEmail;
+    private TextView textViewTitle;
+    private TextView textViewSwitch;
 
     @Override
     public void onAttach(Context context) {
@@ -51,12 +53,12 @@ public class LoginDialog extends DialogFragment {
         LayoutInflater inflater = requireActivity().getLayoutInflater();
         View view = inflater.inflate(R.layout.fragment_login_dialog, null);
 
-        TextView textViewTitle = view.findViewById(R.id.textViewTitle);
+        textViewTitle = view.findViewById(R.id.textViewTitle);
         editTextUsername = view.findViewById(R.id.editTextUsername);
         editTextEmail = view.findViewById(R.id.editTextEmail);
         editTextPassword = view.findViewById(R.id.editTextPassword);
         loginButton = view.findViewById(R.id.buttonAction);
-        TextView textViewSwitch = view.findViewById(R.id.textViewSwitch);
+        textViewSwitch = view.findViewById(R.id.textViewSwitch);
         loadingProgressBar = view.findViewById(R.id.loading);
         // Handle action button click
 
@@ -114,13 +116,21 @@ public class LoginDialog extends DialogFragment {
             } else {
                 // Handle registration logic
                 String username = editTextUsername.getText().toString();
-                AuthService authRepository = new AuthService(this.getContext());
-                //authRepository.performRegistration(email, username, password, registerCallback);
+                this.loginViewModel.performRegistration(email, password, username, this::onSuccessFullRegistration);
             }
         });
         return dialog;
     }
 
+    private void onSuccessFullRegistration() {
+        Toast.makeText(getContext(), "Successfully registered", Toast.LENGTH_LONG).show();
+        this.isLoginMode = true;
+        textViewTitle.setText(isLoginMode ? "Login" : "Register");
+        editTextUsername.setVisibility(isLoginMode ? View.GONE : View.VISIBLE);
+        loginButton.setText(isLoginMode ? "Login" : "Register");
+        textViewSwitch.setText(isLoginMode ? "Don't have an account? Register" : "Already have an account? Login");
+    }
+
     @Override
     public void onViewCreated(@NonNull @NotNull View view, @Nullable @org.jetbrains.annotations.Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);

app/src/main/java/com/stormtales/notevault/ui/login/LoginViewModel.java

@@ -6,6 +6,7 @@ import android.widget.Toast;
 import androidx.lifecycle.MutableLiveData;
 import androidx.lifecycle.ViewModel;
 import com.stormtales.notevault.R;
+import com.stormtales.notevault.network.APICallback;
 import com.stormtales.notevault.network.auth.AuthService;
 import com.stormtales.notevault.network.auth.LoginResponse;
 
@@ -29,6 +30,22 @@ public class LoginViewModel extends ViewModel {
         }
     }
 
+    public void performRegistration(String email, String password, String username, SuccessFullLoginCallback successFullLoginCallback) {
+        if(authService != null) {
+            authService.performRegistration(email, username, password, new APICallback() {
+                @Override
+                public void onSuccess() {
+                    successFullLoginCallback.onSuccess();
+                }
+
+                @Override
+                public void onError(String error) {
+                    Log.d("LoginService", error);
+                }
+            });
+        }
+    }
+
     public void setAuthService(AuthService authService) {
         this.authService = authService;
     }