app/src/main/AndroidManifest.xml

@@ -6,6 +6,7 @@
             android:allowBackup="true"
             android:dataExtractionRules="@xml/data_extraction_rules"
             android:fullBackupContent="@xml/backup_rules"
+            android:networkSecurityConfig="@xml/network_security_config"
             android:icon="@mipmap/ic_launcher"
             android:label="@string/app_name"
             android:roundIcon="@mipmap/ic_launcher_round"

app/src/main/java/com/stormtales/notevault/MainActivity.java

@@ -11,7 +11,9 @@ import androidx.navigation.ui.NavigationUI;
 import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.appcompat.app.AppCompatActivity;
 import com.stormtales.notevault.databinding.ActivityMainBinding;
+import com.stormtales.notevault.network.APICallback;
 import com.stormtales.notevault.network.auth.AuthService;
+import com.stormtales.notevault.ui.login.LoginDialog;
 
 public class MainActivity extends AppCompatActivity {
 
@@ -76,7 +78,27 @@ public class MainActivity extends AppCompatActivity {
     }
 
     public void showLoginDialog() {
-        /*LoginFragment loginFragment = new LoginFragment();
-        loginFragment.show(getSupportFragmentManager(), "login");*/
+        LoginDialog loginDialog = LoginDialog.newInstance(new APICallback() {
+            @Override
+            public void onSuccess() {
+
+            }
+
+            @Override
+            public void onError(String error) {
+
+            }
+        }, new APICallback() {
+            @Override
+            public void onSuccess() {
+
+            }
+
+            @Override
+            public void onError(String error) {
+
+            }
+        });
+        loginDialog.show(getSupportFragmentManager(), "login");
     }
 }

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

@@ -0,0 +1,89 @@
+package com.stormtales.notevault.ui.login;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.TextView;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+import com.stormtales.notevault.R;
+import com.stormtales.notevault.network.APICallback;
+import com.stormtales.notevault.network.auth.AuthService;
+
+public class LoginDialog extends DialogFragment {
+
+    private APICallback loginCallback;
+    private APICallback registerCallback;
+
+    private boolean isLoginMode = true;
+
+    private Dialog dialog;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        if (loginCallback == null) {
+            throw new IllegalStateException("LoginDialogFragment must be created using newInstance()");
+        }
+    }
+
+    public static LoginDialog newInstance(APICallback loginCallback, APICallback registerCallback) {
+        LoginDialog fragment = new LoginDialog();
+        fragment.loginCallback = loginCallback;
+        fragment.registerCallback = registerCallback;
+        return fragment;
+    }
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        AlertDialog.Builder builder = new AlertDialog.Builder(requireContext());
+        LayoutInflater inflater = requireActivity().getLayoutInflater();
+        View view = inflater.inflate(R.layout.fragment_login_dialog, null);
+
+        TextView textViewTitle = view.findViewById(R.id.textViewTitle);
+        EditText editTextUsername = view.findViewById(R.id.editTextUsername);
+        EditText editTextEmail = view.findViewById(R.id.editTextEmail);
+        EditText editTextPassword = view.findViewById(R.id.editTextPassword);
+        Button buttonAction = view.findViewById(R.id.buttonAction);
+        TextView textViewSwitch = view.findViewById(R.id.textViewSwitch);
+
+        // Handle action button click
+        buttonAction.setOnClickListener(v -> {
+            if (isLoginMode) {
+                // Handle login logic
+                String email = editTextEmail.getText().toString();
+                String password = editTextPassword.getText().toString();
+                AuthService authRepository = new AuthService(this.getContext());
+                authRepository.performLogin(email, password, loginCallback);
+            } else {
+                // Handle registration logic
+                String email = editTextEmail.getText().toString();
+                String password = editTextPassword.getText().toString();
+                String username = editTextUsername.getText().toString();
+                AuthService authRepository = new AuthService(this.getContext());
+                authRepository.performRegistration(email, username, password, registerCallback);
+            }
+        });
+
+        // Toggle between Login and Registration
+        textViewSwitch.setOnClickListener(v -> {
+            isLoginMode = !isLoginMode;
+            textViewTitle.setText(isLoginMode ? "Login" : "Register");
+            editTextUsername.setVisibility(isLoginMode ? View.GONE : View.VISIBLE);
+            buttonAction.setText(isLoginMode ? "Login" : "Register");
+            textViewSwitch.setText(isLoginMode ? "Don't have an account? Register" : "Already have an account? Login");
+        });
+
+        builder.setView(view);
+        return builder.create();
+    }
+
+}

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

@@ -0,0 +1,6 @@
+package com.stormtales.notevault.ui.login;
+
+import androidx.lifecycle.ViewModel;
+
+public class LoginViewModel extends ViewModel {
+}

app/src/main/res/drawable/dialog_background.xml

@@ -0,0 +1,6 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android">
+    <solid android:color="@android:color/white" />
+    <corners android:radius="16dp" />
+    <padding android:left="16dp" android:top="16dp" android:right="16dp" android:bottom="16dp" />
+    <elevation android:height="4dp" />
+</shape>

app/src/main/res/layout/fragment_login_dialog.xml

@@ -0,0 +1,68 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content"
+              android:orientation="vertical"
+              android:padding="16dp"
+              android:background="@drawable/dialog_background"
+              android:layout_gravity="center_horizontal">
+
+    <!-- Title -->
+    <TextView
+            android:id="@+id/textViewTitle"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Login"
+            android:textSize="18sp"
+            android:textStyle="bold"
+            android:gravity="center"
+            android:paddingBottom="16dp" />
+
+    <!-- Username Field (Visible only in Registration mode) -->
+    <EditText
+            android:id="@+id/editTextUsername"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="Username"
+            android:visibility="gone" />
+
+    <!-- Email Field -->
+    <EditText
+            android:id="@+id/editTextEmail"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="Email"
+            android:inputType="textEmailAddress" />
+
+    <!-- Password Field -->
+    <EditText
+            android:id="@+id/editTextPassword"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="Password"
+            android:inputType="textPassword" />
+
+    <!-- Action Button -->
+    <Button
+            android:id="@+id/buttonAction"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Login"
+            android:backgroundTint="?attr/colorPrimary"
+            android:textColor="@android:color/white"
+            android:layout_marginTop="16dp" />
+
+    <!-- Toggle Login/Registration -->
+    <TextView
+            android:id="@+id/textViewSwitch"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="Don't have an account? Register"
+            android:gravity="center"
+            android:textColor="?attr/colorPrimary"
+            android:layout_marginTop="8dp"
+            android:padding="8dp"
+            android:clickable="true"
+            android:focusable="true" />
+
+</LinearLayout>

app/src/main/res/xml/network_security_config.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <domain-config cleartextTrafficPermitted="true">
+        <domain includeSubdomains="true">192.168.178.30</domain>
+    </domain-config>
+</network-security-config>