From c49efba57d3f904d8b5fe471644408da835d6d00 Mon Sep 17 00:00:00 2001
From: sebastian <s.boeckelmann3@gmail.com>
Date: Sun, 3 Nov 2024 18:54:53 +0100
Subject: [PATCH] Implement Login Logic

---
 app/build.gradle.kts                          |  8 +++
 app/src/main/AndroidManifest.xml              |  2 +
 .../java/core/notevault/MainActivity.java     | 21 ++++++++
 .../java/core/notevault/sync/ApiClient.java   | 19 +++++++
 .../notevault/sync/auth/AuthRepository.java   | 50 +++++++++++++++++++
 .../core/notevault/sync/auth/AuthService.java | 11 ++++
 .../notevault/sync/auth/LoginCallback.java    |  7 +++
 .../notevault/sync/auth/LoginRequest.java     | 13 +++++
 .../notevault/sync/auth/LoginResponse.java    | 22 ++++++++
 .../notevault/ui/login/LoginCallBackImpl.java | 25 ++++++++++
 .../ui/login/LoginDialogFragment.java         | 41 +++++++++++++++
 app/src/main/res/drawable/login.xml           |  9 ++++
 .../main/res/layout/fragment_login_dialog.xml | 21 ++++++++
 app/src/main/res/menu/main.xml                | 15 +++---
 14 files changed, 257 insertions(+), 7 deletions(-)
 create mode 100644 app/src/main/java/core/notevault/sync/ApiClient.java
 create mode 100644 app/src/main/java/core/notevault/sync/auth/AuthRepository.java
 create mode 100644 app/src/main/java/core/notevault/sync/auth/AuthService.java
 create mode 100644 app/src/main/java/core/notevault/sync/auth/LoginCallback.java
 create mode 100644 app/src/main/java/core/notevault/sync/auth/LoginRequest.java
 create mode 100644 app/src/main/java/core/notevault/sync/auth/LoginResponse.java
 create mode 100644 app/src/main/java/core/notevault/ui/login/LoginCallBackImpl.java
 create mode 100644 app/src/main/java/core/notevault/ui/login/LoginDialogFragment.java
 create mode 100644 app/src/main/res/drawable/login.xml
 create mode 100644 app/src/main/res/layout/fragment_login_dialog.xml

diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 338d995..09ccecd 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -22,6 +22,10 @@ android {
             isMinifyEnabled = false
             proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
         }
+        debug {
+            // Setzt den Manifest-Platzhalter nur für den Debug-Build auf true
+            manifestPlaceholders["usesCleartextTraffic"] = "true"
+        }
     }
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_1_8
@@ -48,6 +52,10 @@ dependencies {
     testImplementation(libs.junit)
     androidTestImplementation(libs.ext.junit)
     androidTestImplementation(libs.espresso.core)
+    implementation("com.squareup.retrofit2:retrofit:2.9.0")
+    implementation("com.squareup.retrofit2:converter-gson:2.9.0")
+    implementation("com.squareup.okhttp3:logging-interceptor:4.9.1")
+
 
     val room_version = "2.6.1" // Aktuelle Room-Version
 
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index d970a5f..ddcd607 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
           xmlns:tools="http://schemas.android.com/tools">
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
             android:allowBackup="true"
             android:dataExtractionRules="@xml/data_extraction_rules"
@@ -11,6 +12,7 @@
             android:roundIcon="@mipmap/ic_launcher_round"
             android:supportsRtl="true"
             android:theme="@style/Theme.NoteVault"
+            android:usesCleartextTraffic="true"
             tools:targetApi="31">
         <activity
                 android:name=".MainActivity"
diff --git a/app/src/main/java/core/notevault/MainActivity.java b/app/src/main/java/core/notevault/MainActivity.java
index 421a7af..e87c87a 100644
--- a/app/src/main/java/core/notevault/MainActivity.java
+++ b/app/src/main/java/core/notevault/MainActivity.java
@@ -4,8 +4,10 @@ import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
 import android.util.Log;
+import android.view.MenuItem;
 import android.view.View;
 import android.view.Menu;
+import android.widget.Toast;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 import androidx.navigation.fragment.NavHostFragment;
@@ -19,10 +21,12 @@ import androidx.drawerlayout.widget.DrawerLayout;
 import androidx.appcompat.app.AppCompatActivity;
 import core.notevault.data.*;
 import core.notevault.databinding.ActivityMainBinding;
+import core.notevault.sync.auth.LoginCallback;
 import core.notevault.ui.gallery.GalleryFragment;
 import core.notevault.ui.gallery.detail.ConcertSongSelector;
 import core.notevault.ui.gallery.editor.ConcertEditorDialog;
 import core.notevault.ui.home.HomeFragment;
+import core.notevault.ui.login.LoginDialogFragment;
 import core.notevault.ui.metadatadialog.MetaDataDialog;
 import core.notevault.util.NoteSheetsUtil;
 
@@ -70,6 +74,21 @@ public class MainActivity extends AppCompatActivity implements MetaDataDialog.On
         return true;
     }
 
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        int id = item.getItemId();
+        if(id == R.id.action_login) {
+            openLoginDialog();
+            return true;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+
+    private void openLoginDialog() {
+        LoginDialogFragment loginDialogFragment = new LoginDialogFragment();
+        loginDialogFragment.show(getSupportFragmentManager(), "LOGIN_TAG");
+    }
+
     @Override
     public boolean onSupportNavigateUp() {
         NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_content_main);
@@ -177,4 +196,6 @@ public class MainActivity extends AppCompatActivity implements MetaDataDialog.On
             }
         }).start();
     }
+
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/core/notevault/sync/ApiClient.java b/app/src/main/java/core/notevault/sync/ApiClient.java
new file mode 100644
index 0000000..34a95f8
--- /dev/null
+++ b/app/src/main/java/core/notevault/sync/ApiClient.java
@@ -0,0 +1,19 @@
+package core.notevault.sync;
+
+import android.content.Context;
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+
+public class ApiClient {
+    private static Retrofit retrofit;
+
+    public static Retrofit getRetrofitInstance(Context context) {
+        if (retrofit == null) {
+            retrofit = new Retrofit.Builder()
+                    .baseUrl("http://192.168.178.30:8080/")
+                    .addConverterFactory(GsonConverterFactory.create())
+                    .build();
+        }
+        return retrofit;
+    }
+}
diff --git a/app/src/main/java/core/notevault/sync/auth/AuthRepository.java b/app/src/main/java/core/notevault/sync/auth/AuthRepository.java
new file mode 100644
index 0000000..a7036cb
--- /dev/null
+++ b/app/src/main/java/core/notevault/sync/auth/AuthRepository.java
@@ -0,0 +1,50 @@
+package core.notevault.sync.auth;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import core.notevault.sync.ApiClient;
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
+public class AuthRepository {
+    private final AuthService authService;
+    private final SharedPreferences preferences;
+
+    public AuthRepository(Context context) {
+        this.authService = ApiClient.getRetrofitInstance(context).create(AuthService.class);
+        this.preferences = context.getSharedPreferences("app_prefs", Context.MODE_PRIVATE);
+    }
+
+    public void performLogin(String username, String password, LoginCallback callback) {
+        LoginRequest loginRequest = new LoginRequest(username, password);
+
+        authService.login(loginRequest).enqueue(new Callback<LoginResponse>() {
+            @Override
+            public void onResponse(Call<LoginResponse> call, Response<LoginResponse> response) {
+                if (response.isSuccessful() && response.body() != null) {
+                    String token = response.body().getToken();
+                    saveToken(token);
+
+                    // Erfolgsrückmeldung an den Callback senden
+                    callback.onSuccess();
+                } else {
+                    // Fehlermeldung an den Callback senden
+                    callback.onError("Login fehlgeschlagen. Überprüfe Benutzername und Passwort.");
+                }
+            }
+
+            @Override
+            public void onFailure(Call<LoginResponse> call, Throwable t) {
+                // Netzwerkfehler an den Callback senden
+                callback.onError("Netzwerkfehler: " + t.getMessage());
+            }
+        });
+    }
+
+    private void saveToken(String token) {
+        SharedPreferences.Editor editor = preferences.edit();
+        editor.putString("jwt_token", token);
+        editor.apply();
+    }
+}
diff --git a/app/src/main/java/core/notevault/sync/auth/AuthService.java b/app/src/main/java/core/notevault/sync/auth/AuthService.java
new file mode 100644
index 0000000..8790231
--- /dev/null
+++ b/app/src/main/java/core/notevault/sync/auth/AuthService.java
@@ -0,0 +1,11 @@
+package core.notevault.sync.auth;
+
+import retrofit2.Call;
+import retrofit2.http.Body;
+import retrofit2.http.POST;
+
+public interface AuthService {
+
+    @POST("api/v1/auth/login")
+    Call<LoginResponse> login(@Body LoginRequest loginRequest);
+}
diff --git a/app/src/main/java/core/notevault/sync/auth/LoginCallback.java b/app/src/main/java/core/notevault/sync/auth/LoginCallback.java
new file mode 100644
index 0000000..565944f
--- /dev/null
+++ b/app/src/main/java/core/notevault/sync/auth/LoginCallback.java
@@ -0,0 +1,7 @@
+package core.notevault.sync.auth;
+
+public interface LoginCallback {
+
+    void onSuccess();
+    void onError(String error);
+}
diff --git a/app/src/main/java/core/notevault/sync/auth/LoginRequest.java b/app/src/main/java/core/notevault/sync/auth/LoginRequest.java
new file mode 100644
index 0000000..6465d72
--- /dev/null
+++ b/app/src/main/java/core/notevault/sync/auth/LoginRequest.java
@@ -0,0 +1,13 @@
+package core.notevault.sync.auth;
+
+public class LoginRequest {
+    private String username;
+    private String password;
+
+    public LoginRequest(String username, String password) {
+        this.username = username;
+        this.password = password;
+    }
+
+
+}
diff --git a/app/src/main/java/core/notevault/sync/auth/LoginResponse.java b/app/src/main/java/core/notevault/sync/auth/LoginResponse.java
new file mode 100644
index 0000000..e9a1330
--- /dev/null
+++ b/app/src/main/java/core/notevault/sync/auth/LoginResponse.java
@@ -0,0 +1,22 @@
+package core.notevault.sync.auth;
+
+public class LoginResponse {
+    private String token;
+    private String username;
+
+    public String getToken() {
+        return token;
+    }
+
+    public void setToken(String token) {
+        this.token = token;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+}
diff --git a/app/src/main/java/core/notevault/ui/login/LoginCallBackImpl.java b/app/src/main/java/core/notevault/ui/login/LoginCallBackImpl.java
new file mode 100644
index 0000000..4c1c0e0
--- /dev/null
+++ b/app/src/main/java/core/notevault/ui/login/LoginCallBackImpl.java
@@ -0,0 +1,25 @@
+package core.notevault.ui.login;
+
+import android.content.Context;
+import android.util.Log;
+import android.widget.Toast;
+import core.notevault.sync.auth.LoginCallback;
+
+public class LoginCallBackImpl implements LoginCallback {
+    private Context context;
+
+    public LoginCallBackImpl(Context context) {
+        this.context = context;
+    }
+
+    @Override
+    public void onSuccess() {
+        Toast.makeText(context, "Login successfull", Toast.LENGTH_SHORT).show();
+    }
+
+    @Override
+    public void onError(String error) {
+        Log.d("Login", error);
+        Toast.makeText(context, "Login not successfull: " + error, Toast.LENGTH_LONG).show();
+    }
+}
diff --git a/app/src/main/java/core/notevault/ui/login/LoginDialogFragment.java b/app/src/main/java/core/notevault/ui/login/LoginDialogFragment.java
new file mode 100644
index 0000000..07ed33d
--- /dev/null
+++ b/app/src/main/java/core/notevault/ui/login/LoginDialogFragment.java
@@ -0,0 +1,41 @@
+package core.notevault.ui.login;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.EditText;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+import core.notevault.R;
+import core.notevault.sync.auth.AuthRepository;
+
+public class LoginDialogFragment extends DialogFragment {
+
+    @NonNull
+    @Override
+    public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
+        LayoutInflater inflater = requireActivity().getLayoutInflater();
+        View loginView = inflater.inflate(R.layout.fragment_login_dialog, null); // Ersetze 'your_dialog_layout' durch deinen Dateinamen
+
+        EditText usernameInput = loginView.findViewById(R.id.editTextUsername);
+        EditText passwordInput = loginView.findViewById(R.id.editTextPassword);
+
+        AuthRepository authRepository = new AuthRepository(this.getContext());
+
+        return new AlertDialog.Builder(requireContext())
+                .setView(loginView)
+                .setPositiveButton("Speichern", (dialog, which) -> {
+                    String username = usernameInput.getText().toString();
+                    String password = passwordInput.getText().toString();
+
+                    authRepository.performLogin(username, password, new LoginCallBackImpl(this.getContext()));
+                } )
+                .setNegativeButton("Abbrechen", (dialog, which) -> {} )
+                .create();
+    }
+
+
+}
diff --git a/app/src/main/res/drawable/login.xml b/app/src/main/res/drawable/login.xml
new file mode 100644
index 0000000..2e5aa22
--- /dev/null
+++ b/app/src/main/res/drawable/login.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960">
+  <path
+      android:pathData="M480,840v-80h280v-560L480,200v-80h280q33,0 56.5,23.5T840,200v560q0,33 -23.5,56.5T760,840L480,840ZM400,680 L345,622 447,520L120,520v-80h327L345,338l55,-58 200,200 -200,200Z"
+      android:fillColor="#e8eaed"/>
+</vector>
diff --git a/app/src/main/res/layout/fragment_login_dialog.xml b/app/src/main/res/layout/fragment_login_dialog.xml
new file mode 100644
index 0000000..cd95cea
--- /dev/null
+++ b/app/src/main/res/layout/fragment_login_dialog.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- res/layout/dialog_login.xml -->
+<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">
+
+    <EditText
+            android:id="@+id/editTextUsername"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="Username" />
+
+    <EditText
+            android:id="@+id/editTextPassword"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="Password"
+            android:inputType="textPassword" />
+</LinearLayout>
diff --git a/app/src/main/res/menu/main.xml b/app/src/main/res/menu/main.xml
index 5960867..4c6e013 100644
--- a/app/src/main/res/menu/main.xml
+++ b/app/src/main/res/menu/main.xml
@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-      xmlns:app="http://schemas.android.com/apk/res-auto">
-    <item android:id="@+id/action_settings"
-          android:title="@string/action_settings"
-          android:orderInCategory="101"
-          app:showAsAction="never"/>
-</menu>
\ No newline at end of file
+<!-- res/menu/main_menu.xml -->
+<menu xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:android="http://schemas.android.com/apk/res/android">
+    <item
+            android:id="@+id/action_login"
+            android:title="Login"
+            android:icon="@drawable/login"
+            app:showAsAction="always"/> <!-- Wichtig: immer in der Toolbar anzeigen -->
+</menu>