Untested

app/build.gradle

@@ -7,8 +7,8 @@ android {
         applicationId "de.sebse.fuplanner"
         minSdkVersion 21
         targetSdkVersion 29
-        versionCode 42
-        versionName "1.6.3"
+        versionCode 43
+        versionName "1.6.4"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {

app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="de.sebse.fuplanner">
 
     <uses-permission
@@ -21,6 +22,10 @@
     <uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />
     <uses-permission android:name="android.permission.READ_SYNC_SETTINGS" />
 
+    <!-- Calendar integration -->
+    <uses-permission android:name="android.permission.READ_CALENDAR" />
+    <uses-permission android:name="android.permission.WRITE_CALENDAR" />
+
     <application
         android:allowBackup="true"
         android:fullBackupContent="@xml/backup_descriptor"
@@ -58,7 +63,6 @@
             android:syncable="true">
 
         </provider>
-
         <activity
             android:name=".services.fulogin.FUAuthenticatorActivity"
             android:label="@string/title_activity_fuauthenticator" />

app/src/main/java/de/sebse/fuplanner/MainActivity.java

@@ -278,17 +278,12 @@ public class MainActivity extends AppCompatActivity
                     updateNavigation();
                     if (restoreResult == Login.RESTORE_STATUS_SUCCESS && !isLoggedInBeforePause) {
                         changeFragment(getDefaultFragmentAfterLogin());
-                        registerSync();
                     } else if (restoreResult == Login.RESTORE_STATUS_INVALID_PASSWORD && isLoggedInBeforePause) {
                         kvv.account().logout(false);
                         changeFragment(getDefaultFragmentAfterLogout());
                     }
-                });
-                kvv.modules().list().reloadIfOutdated();
-            });
-        }
-        isPaused = false;
 
+                    if (restoreResult == Login.RESTORE_STATUS_SUCCESS || restoreResult == Login.RELOGIN) {
                         if (!Preferences.getBoolean(this, R.string.pref_set_auto_sync_on_startup) && mAccountManager.hasAccounts(AccountGeneral.ACCOUNT_TYPE)) {
                             registerSync(true);
                             Preferences.setBoolean(this, R.string.pref_set_auto_sync_on_startup, true);
@@ -296,6 +291,12 @@ public class MainActivity extends AppCompatActivity
                             registerSync();
                         }
                     }
+                });
+                kvv.modules().list().reloadIfOutdated();
+            });
+        }
+        isPaused = false;
+    }
 
     @Override
     public void onBackPressed() {
@@ -545,6 +546,13 @@ public class MainActivity extends AppCompatActivity
                     Bundle.EMPTY,
                     Long.parseLong(Preferences.getStringArray(this, R.array.pref_sync_frequency)) * 60 * 60
             );
+            forceSync();
+        }
+    }
+
+    public void forceSync() {
+        Account accountByType = mAccountManager.getAccountByType(AccountGeneral.ACCOUNT_TYPE);
+        if (accountByType != null && ContentResolver.getMasterSyncAutomatically() && ContentResolver.getSyncAutomatically(accountByType, KVVContentProvider.PROVIDER_NAME)) {
             ContentResolver.requestSync(accountByType, KVVContentProvider.PROVIDER_NAME, Bundle.EMPTY);
         }
     }

app/src/main/java/de/sebse/fuplanner/fragments/PrefsFragment.java

@@ -1,23 +1,40 @@
 package de.sebse.fuplanner.fragments;
 
+import android.Manifest;
 import android.accounts.Account;
 import android.content.ContentResolver;
+import android.content.Context;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.util.Log;
 
+import androidx.annotation.NonNull;
 import androidx.appcompat.app.AppCompatDelegate;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
 import androidx.preference.ListPreference;
 import androidx.preference.Preference;
 import androidx.preference.PreferenceFragmentCompat;
+
+import java.util.Arrays;
+
 import de.sebse.fuplanner.MainActivity;
 import de.sebse.fuplanner.R;
 import de.sebse.fuplanner.services.fulogin.AccountGeneral;
 import de.sebse.fuplanner.services.kvv.sync.KVVContentProvider;
+import de.sebse.fuplanner.services.kvv.ui.Download;
 import de.sebse.fuplanner.tools.CustomAccountManager;
+import de.sebse.fuplanner.tools.MainActivityListener;
 import de.sebse.fuplanner.tools.Preferences;
+import de.sebse.fuplanner.tools.RequestPermissionsResultListener;
+import de.sebse.fuplanner.tools.logging.Logger;
 
 public class PrefsFragment extends PreferenceFragmentCompat implements SharedPreferences.OnSharedPreferenceChangeListener {
 
+    private MainActivityListener mMainActivityListener;
+    private Logger log = new Logger(this);
+
     public static PrefsFragment newInstance() {
         PrefsFragment fragment = new PrefsFragment();
         Bundle args = new Bundle();
@@ -30,7 +47,7 @@ public class PrefsFragment extends PreferenceFragmentCompat implements SharedPre
         // Load the preferences from an XML resource
         setPreferencesFromResource(R.xml.preferences, rootKey);
         for (String s : getPreferenceScreen().getSharedPreferences().getAll().keySet()) {
-            onSharedPreferenceChanged(getPreferenceScreen().getSharedPreferences(), s);
+            updateListPreferenceSummary(s);
         }
     }
 
@@ -48,10 +65,9 @@ public class PrefsFragment extends PreferenceFragmentCompat implements SharedPre
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String s) {
-        Preference preference = getPreferenceScreen().findPreference(s);
-        if (preference instanceof ListPreference)
-            preference.setSummary(((ListPreference) preference).getEntry());
+        updateListPreferenceSummary(s);
 
+        if (s.equals(requireContext().getString(R.string.pref_sync_frequency))) {
             if (getActivity() != null && getActivity() instanceof MainActivity) {
                 CustomAccountManager accountManager = ((MainActivity) getActivity()).getAccountManager();
                 if (accountManager != null) {
@@ -66,12 +82,70 @@ public class PrefsFragment extends PreferenceFragmentCompat implements SharedPre
                     }
                 }
             }
+        }
 
+        if (s.equals(requireContext().getString(R.string.pref_night_mode))) {
             String nightMode = Preferences.getStringArray(requireContext(), R.array.pref_night_mode);
             switch (nightMode) {
-            case "night": AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES); break;
-            case "day": AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO); break;
-            default: AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM); break;
+                case "night":
+                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
+                    break;
+                case "day":
+                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
+                    break;
+                default:
+                    AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM);
+                    break;
             }
         }
+
+        if (s.equals(requireContext().getString(R.string.pref_add_calendar))
+                && getActivity() != null
+                && Preferences.getBoolean(getActivity(), R.string.pref_add_calendar)) {
+            if (ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.WRITE_CALENDAR) != PackageManager.PERMISSION_GRANTED
+                    || ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.READ_CALENDAR) != PackageManager.PERMISSION_GRANTED) {
+                ActivityCompat.requestPermissions(getActivity(), new String[]{Manifest.permission.WRITE_CALENDAR, Manifest.permission.READ_CALENDAR}, 1);
+            }
+        }
+        if (s.equals(requireContext().getString(R.string.pref_add_calendar)) && mMainActivityListener != null) {
+            log.d("Force sync...");
+            mMainActivityListener.forceSync();
+        }
+    }
+
+    private void updateListPreferenceSummary(String s) {
+        Preference preference = getPreferenceScreen().findPreference(s);
+        if (preference instanceof ListPreference)
+            preference.setSummary(((ListPreference) preference).getEntry());
+    }
+
+
+    @Override
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        if (context instanceof MainActivityListener) {
+            mMainActivityListener = (MainActivityListener) context;
+            mMainActivityListener.onTitleTextChange(R.string.settings);
+            mMainActivityListener.addRequestPermissionsResultListener(getRequestPermissionsResultListener(), "PrefFragment");
+        } else
+            throw new RuntimeException(context.toString() + " must implement MainActivityListener");
+    }
+
+    @Override
+    public void onDetach() {
+        super.onDetach();
+        mMainActivityListener.removeRequestPermissionsResultListener("PrefFragment");
+        mMainActivityListener = null;
+    }
+
+    private RequestPermissionsResultListener getRequestPermissionsResultListener() {
+        return (requestCode, permissions, grantResults) -> {
+            if (ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.WRITE_CALENDAR) != PackageManager.PERMISSION_GRANTED
+            || ContextCompat.checkSelfPermission(requireContext(), Manifest.permission.READ_CALENDAR) != PackageManager.PERMISSION_GRANTED) {
+                Preferences.setBoolean(requireContext(), R.string.pref_add_calendar, false);
+                setPreferenceScreen(null);
+                setPreferencesFromResource(R.xml.preferences, null);
+            }
+        };
+    }
 }

app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAnnounceFragment.java

@@ -2,6 +2,7 @@ package de.sebse.fuplanner.fragments.moddetails;
 
 
 import android.content.Context;
+import android.os.Build;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -102,8 +103,20 @@ public class ModDetailAnnounceFragment extends Fragment implements Download.OnDo
             return;
         mListener.getKVV(kvv -> {
             kvv.modules().list().find(mItemPos, (Modules.Module module) -> {
-                String folderName = "FU-"+module.title.replaceAll("[:*<>|/\"\\\\]", "-");
+                String folderName;
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                    if (module.semester != null) {
+                        folderName = module.semester.toString();
+                    } else {
+                        folderName = "PROJ";
+                    }
+                    folderName += "-" + module.title.replaceAll("[:*<>|/\"\\\\]", "-");
+                    folderName += "/Announcements";
+                } else {
+                    folderName = "FU-"+module.title.replaceAll("[:*<>|/\"\\\\]", "-");
                     folderName += "/Announcement";
+                }
+
                 getDownload().openDownloadDialog(title, url, folderName);
             }, log::e);
         });

app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailAssignmentFragment.java

@@ -2,6 +2,7 @@ package de.sebse.fuplanner.fragments.moddetails;
 
 
 import android.content.Context;
+import android.os.Build;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -102,8 +103,20 @@ public class ModDetailAssignmentFragment extends Fragment implements Download.On
             return;
         mListener.getKVV(kvv -> {
             kvv.modules().list().find(mItemPos, (Modules.Module module) -> {
-                String folderName = "FU-"+module.title.replaceAll("[:*<>|/\"\\\\]", "-");
-                folderName += "/Announcement";
+                String folderName;
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                    if (module.semester != null) {
+                        folderName = module.semester.toString();
+                    } else {
+                        folderName = "PROJ";
+                    }
+                    folderName += "-" + module.title.replaceAll("[:*<>|/\"\\\\]", "-");
+                    folderName += "/Assignments";
+                } else {
+                    folderName = "FU-"+module.title.replaceAll("[:*<>|/\"\\\\]", "-");
+                    folderName += "/Assignment";
+                }
+
                 getDownload().openDownloadDialog(title, url, folderName);
             }, log::e);
         });

app/src/main/java/de/sebse/fuplanner/fragments/moddetails/ModDetailResourceFragment.java

@@ -2,6 +2,7 @@ package de.sebse.fuplanner.fragments.moddetails;
 
 
 import android.content.Context;
+import android.os.Build;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
@@ -92,7 +93,18 @@ public class ModDetailResourceFragment extends Fragment implements Download.OnDo
                 } else if (node.getContent() instanceof Resource.File && ModDetailResourceFragment.this.mListener != null) { // if leaf is file
                     ModDetailResourceFragment.this.mListener.getKVV(kvv -> {
                         kvv.modules().resources().recv(mItemPos, (Modules.Module module) -> {
-                            String folderName = "FU-"+module.title.replaceAll("[:*<>|/\"\\\\]", "-");
+                            String folderName;
+                            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                                if (module.semester != null) {
+                                    folderName = module.semester.toString();
+                                } else {
+                                    folderName = "PROJ";
+                                }
+                                folderName += "-" + module.title.replaceAll("[:*<>|/\"\\\\]", "-");
+                                folderName += "/Resources";
+                            } else {
+                                folderName = "FU-"+module.title.replaceAll("[:*<>|/\"\\\\]", "-");
+                            }
                             Resource.File file = (Resource.File) node.getContent();
                             getDownload().openDownloadDialog(file, folderName);
                         }, log::e);

app/src/main/java/de/sebse/fuplanner/services/canteen/CanteenBrowser.java

@@ -49,12 +49,11 @@ public class CanteenBrowser extends HTTPService {
     }
 
     public void getCanteens(final NetworkCallback<Canteens> callback, final NetworkErrorCallback errorCallback, boolean forceRefresh) {
-        queue.add("list", () -> {
         if (this.canteens != null && !forceRefresh) {
             callback.onResponse(this.canteens);
-                queue.next("list");
             return;
         }
+        queue.add("list", () -> {
             this.upgradeCanteens(success -> {
                 if (this.canteens == null)
                     this.canteens = success;
@@ -111,12 +110,11 @@ public class CanteenBrowser extends HTTPService {
     }
 
     public void getAvailableCanteens(final NetworkCallback<Canteens> callback, final NetworkErrorCallback errorCallback, boolean forceRefresh) {
-        queue.add("available", () -> {
         if (this.availableCanteens != null && !forceRefresh) {
             callback.onResponse(this.availableCanteens);
-                queue.next("available");
             return;
         }
+        queue.add("available", () -> {
             this.upgradeAvailableCanteens(success -> {
                 if (this.availableCanteens == null)
                     this.availableCanteens = success;
@@ -186,12 +184,11 @@ public class CanteenBrowser extends HTTPService {
 
     public void getCanteen(Canteen canteen, final NetworkCallback<Canteen> callback, final NetworkErrorCallback errorCallback, boolean forceRefresh) {
         String hash = "canteen" + canteen.getId();
-        queue.add(hash, () -> {
         if (canteen.size() > 0 && !forceRefresh) {
             callback.onResponse(canteen);
-                queue.next(hash);
             return;
         }
+        queue.add(hash, () -> {
             this.upgradeCanteen(canteen, success -> {
                 canteen.update(success);
                 this.save();
@@ -233,12 +230,11 @@ public class CanteenBrowser extends HTTPService {
 
     public void getDay(Day day, final NetworkCallback<Day> callback, final NetworkErrorCallback errorCallback, boolean forceRefresh) {
         String hash = "day" + day.getCanteenId() + "@@@" + Canteen.calendarToKey(day.getCalendar());
-        queue.add(hash, () -> {
         if (day.size() > 0 && !forceRefresh) {
             callback.onResponse(day);
-                queue.next(hash);
             return;
         }
+        queue.add(hash, () -> {
             this.upgradeDay(day, success -> {
                 day.update(success);
                 this.save();

app/src/main/java/de/sebse/fuplanner/services/fulogin/UserLoginResult.java

@@ -0,0 +1,4 @@
+package de.sebse.fuplanner.services.fulogin;
+
+public class UserLoginResult {
+}

app/src/main/java/de/sebse/fuplanner/services/kvv/Constants.java

@@ -1,5 +1,6 @@
 package de.sebse.fuplanner.services.kvv;
 
 public class Constants {
-    public static final String KVV_SERVER_URL = "https://mycampus.imp.fu-berlin.de/";
+    public static final String WB_SERVER_URL = "https://mycampus.imp.fu-berlin.de/";
+    public static final String BB_SERVER_URL = "https://lms.fu-berlin.de/";
 }

app/src/main/java/de/sebse/fuplanner/services/kvv/KVV.java

@@ -13,7 +13,7 @@ import org.jetbrains.annotations.NotNull;
 import java.util.HashMap;
 
 import de.sebse.fuplanner.services.kvv.types.LoginTokenBB;
-import de.sebse.fuplanner.services.kvv.types.LoginTokenKVV;
+import de.sebse.fuplanner.services.kvv.types.LoginTokenWB;
 import de.sebse.fuplanner.tools.CustomAccountManager;
 
 public class KVV extends Service {
@@ -36,7 +36,7 @@ public class KVV extends Service {
         }
 
         @Override
-        public void onLogin(LoginTokenKVV tokenKVV, LoginTokenBB tokenBB, boolean isOnlyRefresh) {
+        public void onLogin(LoginTokenWB tokenKVV, LoginTokenBB tokenBB, boolean isOnlyRefresh) {
             for (KVVListener listener : mListeners.values())
                 listener.onLogin(tokenKVV, tokenBB, isOnlyRefresh);
         }

app/src/main/java/de/sebse/fuplanner/services/kvv/KVVListener.java

@@ -3,12 +3,12 @@ package de.sebse.fuplanner.services.kvv;
 import com.android.volley.NetworkResponse;
 
 import de.sebse.fuplanner.services.kvv.types.LoginTokenBB;
-import de.sebse.fuplanner.services.kvv.types.LoginTokenKVV;
+import de.sebse.fuplanner.services.kvv.types.LoginTokenWB;
 import de.sebse.fuplanner.services.kvv.types.Modules;
 import de.sebse.fuplanner.tools.CustomAccountManager;
 
 public interface KVVListener {
-    default void onLogin(LoginTokenKVV tokenKVV, LoginTokenBB tokenBB, boolean isOnlyRefresh) {}
+    default void onLogin(LoginTokenWB tokenKVV, LoginTokenBB tokenBB, boolean isOnlyRefresh) {}
 
     default void onLogout() {}
 

app/src/main/java/de/sebse/fuplanner/services/kvv/Login.java

@@ -10,9 +10,9 @@ import de.sebse.fuplanner.R;
 import de.sebse.fuplanner.services.fulogin.AccountGeneral;
 import de.sebse.fuplanner.services.kvv.sync.BBLogin;
 import de.sebse.fuplanner.services.kvv.sync.FULogin;
-import de.sebse.fuplanner.services.kvv.sync.KVVLogin;
+import de.sebse.fuplanner.services.kvv.sync.WBLogin;
 import de.sebse.fuplanner.services.kvv.types.LoginTokenBB;
-import de.sebse.fuplanner.services.kvv.types.LoginTokenKVV;
+import de.sebse.fuplanner.services.kvv.types.LoginTokenWB;
 import de.sebse.fuplanner.tools.CustomAccountManager;
 import de.sebse.fuplanner.tools.NetworkCallbackCollector;
 import de.sebse.fuplanner.tools.Preferences;
@@ -31,10 +31,10 @@ public class Login {
 
     private final KVVListener mListener;
     private Context context;
-    @Nullable private LoginTokenKVV mTokenKVV;
+    @Nullable private LoginTokenWB mTokenKVV;
     @Nullable private LoginTokenBB mTokenBB;
     private boolean mLoginPending = false;
-    private final NetworkCallbackCollector<Pair<LoginTokenKVV, LoginTokenBB>> mRefreshCallbacks = new NetworkCallbackCollector<>();
+    private final NetworkCallbackCollector<Pair<LoginTokenWB, LoginTokenBB>> mRefreshCallbacks = new NetworkCallbackCollector<>();
     private final NetworkCallbackCollector<Integer> mRestoreCallbacks = new NetworkCallbackCollector<>();
 
     Login(KVVListener listener, Context context) {
@@ -53,7 +53,7 @@ public class Login {
             return;
         }
         mLoginPending = true;
-        LoginTokenKVV.load(mListener.getAccountManager(), tokenKVV -> {
+        LoginTokenWB.load(mListener.getAccountManager(), tokenKVV -> {
             LoginTokenBB.load(mListener.getAccountManager(), tokenBB -> {
                 boolean result = setToken(tokenKVV, tokenBB);
                 mLoginPending = false;
@@ -69,7 +69,7 @@ public class Login {
     }
 
     public void isOfflineStoredAvailable(BooleanInterface callback) {
-        LoginTokenKVV.load(mListener.getAccountManager(), tokenKVV -> {
+        LoginTokenWB.load(mListener.getAccountManager(), tokenKVV -> {
             LoginTokenBB.load(mListener.getAccountManager(), tokenBB -> {
                 callback.run(tokenKVV != null && tokenBB != null);
             }, e -> callback.run(false));
@@ -103,7 +103,7 @@ public class Login {
         return isLoggedIn();
     }
 
-    void testLoginToken(@NotNull NetworkCallback<Pair<LoginTokenKVV, LoginTokenBB>> callback, @NotNull NetworkErrorCallback errorCallback) {
+    void testLoginToken(@NotNull NetworkCallback<Pair<LoginTokenWB, LoginTokenBB>> callback, @NotNull NetworkErrorCallback errorCallback) {
         if (mTokenKVV == null) {
             errorCallback.onError(new NetworkError(100173, -1, "Not logged in!"));
             return;
@@ -115,16 +115,16 @@ public class Login {
         testLoginToken(mTokenKVV, mTokenBB, callback, errorCallback);
     }
 
-    private void testLoginToken(@NotNull LoginTokenKVV tokenKVV, @NotNull LoginTokenBB tokenBB, @NotNull NetworkCallback<Pair<LoginTokenKVV, LoginTokenBB>> callback, @NotNull NetworkErrorCallback errorCallback) {
+    private void testLoginToken(@NotNull LoginTokenWB tokenKVV, @NotNull LoginTokenBB tokenBB, @NotNull NetworkCallback<Pair<LoginTokenWB, LoginTokenBB>> callback, @NotNull NetworkErrorCallback errorCallback) {
         FULogin mFULogin = new FULogin(getContext());
-        new KVVLogin(getContext(), mFULogin).testLoginToken(tokenKVV, tokenKVV1 -> {
+        new WBLogin(getContext(), mFULogin).testLoginToken(tokenKVV, tokenKVV1 -> {
             new BBLogin(getContext(), mFULogin).testLoginToken(tokenBB, tokenBB1 -> {
                 callback.onResponse(new Pair<>(tokenKVV1, tokenBB1));
             }, errorCallback);
         }, errorCallback);
     }
 
-    @Nullable public LoginTokenKVV getLoginTokenKVV() {
+    @Nullable public LoginTokenWB getLoginTokenKVV() {
         return mTokenKVV;
     }
 
@@ -132,7 +132,7 @@ public class Login {
         return mTokenBB;
     }
 
-    void refreshLogin(NetworkCallback<Pair<LoginTokenKVV, LoginTokenBB>> success, NetworkErrorCallback error, int flags) {
+    void refreshLogin(NetworkCallback<Pair<LoginTokenWB, LoginTokenBB>> success, NetworkErrorCallback error, int flags) {
         boolean isFirst = mRefreshCallbacks.isEmpty();
         mRefreshCallbacks.add(success, error);
         if (!isFirst)
@@ -140,10 +140,10 @@ public class Login {
         refreshLoginRunner(success, error, flags);
     }
 
-    private void refreshLoginRunner(NetworkCallback<Pair<LoginTokenKVV, LoginTokenBB>> success, NetworkErrorCallback error, int flags) {
+    private void refreshLoginRunner(NetworkCallback<Pair<LoginTokenWB, LoginTokenBB>> success, NetworkErrorCallback error, int flags) {
         CustomAccountManager manager = mListener.getAccountManager();
         if ((flags & LOGOUT_KVV) == LOGOUT_KVV) {
-            manager.doInvalidateToken(AccountGeneral.ACCOUNT_TYPE, AccountGeneral.AUTHTOKEN_TYPE_KVV, ignored -> {
+            manager.doInvalidateToken(AccountGeneral.ACCOUNT_TYPE, AccountGeneral.AUTHTOKEN_TYPE_WB, ignored -> {
                 refreshLoginRunner(success, error, flags & ~LOGOUT_KVV);
             });
         } else if ((flags & LOGOUT_BB) == LOGOUT_BB) {
@@ -178,7 +178,7 @@ public class Login {
         }
     }
 
-    private boolean setToken(@Nullable LoginTokenKVV tokenKVV, @Nullable LoginTokenBB tokenBB) {
+    private boolean setToken(@Nullable LoginTokenWB tokenKVV, @Nullable LoginTokenBB tokenBB) {
         if (tokenKVV == null || tokenBB == null)
             return false;
         boolean isOnlyRefresh = mTokenKVV != null;

app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesAnnouncements.java

@@ -39,7 +39,7 @@ public class ModulesAnnouncements extends PartModules<ArrayList<Announcement>> {
             errorCallback.onError(new NetworkError(101204, 500, "Currently running in offline mode!"));
             return;
         }
-        super.get(String.format(Constants.KVV_SERVER_URL+"direct/announcement/site/%s.json?n=999999&d=999999999&_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
+        super.get(String.format(Constants.WB_SERVER_URL +"direct/announcement/site/%s.json?n=999999&d=999999999&_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
             String body = response.getParsed();
             if (body == null) {
                 errorCallback.onError(new NetworkError(101201, 403, "No announcements retrieved!"));

app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesAssignments.java

@@ -39,7 +39,7 @@ public class ModulesAssignments extends PartModules<AssignmentList> {
             errorCallback.onError(new NetworkError(101304, 500, "Currently running in offline mode!"));
             return;
         }
-        get(String.format(Constants.KVV_SERVER_URL+"direct/assignment/site/%s.json?_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
+        get(String.format(Constants.WB_SERVER_URL +"direct/assignment/site/%s.json?_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
             String body = response.getParsed();
             if (body == null) {
                 errorCallback.onError(new NetworkError(101301, 403, "No assignments retrieved!"));

app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesEvents.java

@@ -46,7 +46,7 @@ public class ModulesEvents extends PartModules<EventList> {
             errorCallback.onError(new NetworkError(101404, 500, "Currently running in offline mode!"));
             return;
         }
-        get(String.format(Constants.KVV_SERVER_URL+"direct/calendar/site/%s.json?detailed=true&_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
+        get(String.format(Constants.WB_SERVER_URL +"direct/calendar/site/%s.json?detailed=true&_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
             String body = response.getParsed();
             if (body == null) {
                 errorCallback.onError(new NetworkError(101401, 403, "No events retrieved!"));

app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesGradebook.java

@@ -6,8 +6,6 @@ import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
-import java.util.ArrayList;
-
 import de.sebse.fuplanner.services.kvv.types.Grade;
 import de.sebse.fuplanner.services.kvv.types.Gradebook;
 import de.sebse.fuplanner.services.kvv.types.Modules;
@@ -39,7 +37,7 @@ public class ModulesGradebook extends PartModules<Gradebook> {
             errorCallback.onError(new NetworkError(101504, 500, "Currently running in offline mode!"));
             return;
         }
-        super.get(String.format(Constants.KVV_SERVER_URL+"direct/gradebook/site/%s.json", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
+        super.get(String.format(Constants.WB_SERVER_URL +"direct/gradebook/site/%s.json", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
             String body = response.getParsed();
             if (body == null) {
                 errorCallback.onError(new NetworkError(101501, 403, "No gradebook retrieved!"));

app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesList.java

@@ -104,9 +104,10 @@ public class ModulesList extends HTTPService {
         } catch (FileNotFoundException ignored) {
         } catch (IOException | ClassNotFoundException e) {
             e.printStackTrace();
+            delete();
         }
         if (this.mModules == null) {
-            recv(success -> {}, log::e);
+            recv(success -> {}, log::e, true);
         }
     }
 
@@ -131,6 +132,10 @@ public class ModulesList extends HTTPService {
                 mLogin.getLoginTokenBB() != null && mLogin.getLoginTokenBB().isOtherUser(mModules.getUsername())
         )
             delete();
+        if (this.mModules != null && !forceRefresh) {
+            callback.onResponse(this.mModules);
+            return;
+        }
         mQueue.add(() -> {
             if (mLogin.isLoginPending()) {
                 mLogin.restoreOnlineLogin(resCode -> {
@@ -141,11 +146,6 @@ public class ModulesList extends HTTPService {
             }
         });
         mQueue.add(() -> {
-            if (this.mModules != null && !forceRefresh) {
-                callback.onResponse(this.mModules);
-                mQueue.next();
-                return;
-            }
             Function<Integer, NetworkErrorCallback> errorFunc = ((Integer errorCode) -> (error -> {
                 if (retries > 0 && (error.getHttpStatus() == 401 || error.getHttpStatus() == 403)) {
                     mLogin.refreshLogin(success -> {
@@ -194,7 +194,7 @@ public class ModulesList extends HTTPService {
             callback.onResponse(modules);
             return;
         }
-        get(Constants.KVV_SERVER_URL+"direct/membership.json?_validateSession=", mLogin.getLoginTokenKVV().getCookies(), response -> {
+        get(Constants.WB_SERVER_URL +"direct/membership.json?_validateSession=", mLogin.getLoginTokenKVV().getCookies(), response -> {
             String body = response.getParsed();
             if (body == null) {
                 errorCallback.onError(new NetworkError(101111, 403, "No membership list retrieved!"));
@@ -226,7 +226,7 @@ public class ModulesList extends HTTPService {
                         if (--latch[0] == 0) successCallback.onResponse(modules);
                         continue;
                     }
-                    get(String.format(Constants.KVV_SERVER_URL+"direct/site/%s.json?_validateSession=", courseId), mLogin.getLoginTokenKVV().getCookies(), response1 -> {
+                    get(String.format(Constants.WB_SERVER_URL +"direct/site/%s.json?_validateSession=", courseId), mLogin.getLoginTokenKVV().getCookies(), response1 -> {
                         String body1 = response1.getParsed();
                         if (body1 == null) {
                             errorCallback.onError(new NetworkError(101113, 403, "No site retrieved!"));

app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesResources.java

@@ -1,6 +1,7 @@
 package de.sebse.fuplanner.services.kvv;
 
 import android.content.Context;
+import android.os.Build;
 import android.os.Environment;
 
 import org.json.JSONArray;
@@ -46,7 +47,7 @@ public class ModulesResources extends PartModules<ArrayList<Resource>> {
             errorCallback.onError(new NetworkError(101604, 500, "Currently running in offline mode!"));
             return;
         }
-        get(String.format(Constants.KVV_SERVER_URL+"direct/content/site/%s.json?_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
+        get(String.format(Constants.WB_SERVER_URL +"direct/content/site/%s.json?_validateSession=", ID), mLogin.getLoginTokenKVV().getCookies(), response -> {
             String body = response.getParsed();
             if (body == null) {
                 errorCallback.onError(new NetworkError(101601, 403, "No resources retrieved!"));
@@ -367,8 +368,15 @@ public class ModulesResources extends PartModules<ArrayList<Resource>> {
     }
     private String saveFileInDownloads(String filename, byte[] data, String moduleName) {
         // Saves file in folder: DOWNLOADS/moduleName
-        File folder = new File(Environment.getExternalStoragePublicDirectory(
+        File folder;
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            folder = new File(getContext().getExternalFilesDir(
                     Environment.DIRECTORY_DOWNLOADS), moduleName);
+        } else {
+            folder = new File(Environment.getExternalStoragePublicDirectory(
+                    Environment.DIRECTORY_DOWNLOADS), moduleName);
+        }
         if (!folder.mkdirs()) {
             log.w( "Directory not created");
         }

app/src/main/java/de/sebse/fuplanner/services/kvv/PartModules.java

@@ -19,6 +19,10 @@ abstract class PartModules<T> extends Part<Modules.Module> {
 
     @Override
     protected void recv(final Modules.Module module, final NetworkCallback<Modules.Module> callback, final NetworkErrorCallback errorCallback, final boolean forceRefresh, final int retries) {
+        if (getPart(module) != null && !forceRefresh) {
+            callback.onResponse(module);
+            return;
+        }
         mQueue.add(() -> {
             if (mLogin.isLoginPending()) {
                 mLogin.restoreOnlineLogin(resCode -> {
@@ -29,11 +33,6 @@ abstract class PartModules<T> extends Part<Modules.Module> {
             }
         });
         mQueue.add(() -> {
-            if (getPart(module) != null && !forceRefresh) {
-                callback.onResponse(module);
-                mQueue.next();
-                return;
-            }
             upgrade(module.getModuleType(), module.getID(), success -> {
                 if (setPart(module, success)) {
                     this.mList.store();

app/src/main/java/de/sebse/fuplanner/services/kvv/sync/BBLogin.java

@@ -1,6 +1,7 @@
 package de.sebse.fuplanner.services.kvv.sync;
 
 import android.content.Context;
+import android.os.Bundle;
 
 import org.jetbrains.annotations.NotNull;
 import org.json.JSONException;
@@ -16,147 +17,133 @@ import de.sebse.fuplanner.tools.network.NetworkCallback;
 import de.sebse.fuplanner.tools.network.NetworkError;
 import de.sebse.fuplanner.tools.network.NetworkErrorCallback;
 
-public class BBLogin extends HTTPService {
-    private final FULogin mFULogin;
-    private long lastHash;
-    private long lastSync;
-    private static final long MAX_CACHE_TIME = 1000 * 60; // 1 minute
+import static de.sebse.fuplanner.services.kvv.Constants.BB_SERVER_URL;
+
+public class BBLogin extends LoginRoutine<LoginTokenBB> {
+    private FULogin fuLogin;
 
     public BBLogin(Context context, FULogin fuLogin) {
         super(context);
-        this.mFULogin = fuLogin;
+        this.fuLogin = fuLogin;
     }
 
-    public void testLoginToken(@NotNull LoginTokenBB token, @NotNull NetworkCallback<LoginTokenBB> callback, @NotNull NetworkErrorCallback errorCallback) {
-        if (token.hashCode() == lastHash && lastSync + MAX_CACHE_TIME > System.currentTimeMillis() && token.getStudentId() != null) {
-            callback.onResponse(token);
-            return;
+    @Override
+    public void doesAccountExists(@NotNull String username, @NotNull NetworkCallback<Boolean> callback, @NotNull NetworkErrorCallback error) {
+        callback.onResponse(true);
     }
-        get(String.format("https://lms.fu-berlin.de/learn/api/public/v1/users/?userName=%s", token.getUsername()), token.getCookies(), response -> {
+
+    @Override
+    protected LoginTokenBB createUnavailableToken() {
+        return new LoginTokenBB();
+    }
+
+    @Override
+    protected void checkToken(@NotNull LoginTokenBB token, @NotNull NetworkCallback<Bundle> bundleCallback, @NotNull NetworkErrorCallback error) {
+        get(String.format(BB_SERVER_URL + "learn/api/public/v1/users/?userName=%s", token.getUsername()), token.getCookies(), response -> {
             String body = response.getParsed();
             if (body == null) {
-                errorCallback.onError(new NetworkError(100272, 403, "Testing login failed!"));
+                error.onError(new NetworkError(100272, 403, "Testing BB login failed!"));
                 return;
             }
             try {
                 JSONObject json = new JSONObject(body);
                 json = json.getJSONArray("results").getJSONObject(0);
-                String id = json.getString("id");
-                String studentId = json.getString("studentId");
-                token.setAdditionals(id, studentId);
-                lastSync = System.currentTimeMillis();
-                lastHash = token.hashCode();
-                callback.onResponse(token);
+                Bundle bundle = new Bundle();
+                bundle.putString("id", json.getString("id"));
+                bundle.putString("studentId", json.getString("studentId"));
+                bundleCallback.onResponse(bundle);
             } catch (JSONException e) {
-                errorCallback.onError(new NetworkError(100271, 403, "Cannot parse profile!"));
+                error.onError(new NetworkError(100271, 403, "Cannot parse BB profile!"));
             }
-        }, error -> errorCallback.onError(new NetworkError(100270, error.networkResponse.statusCode, "Testing login failed!")));
+        }, err -> error.onError(new NetworkError(100270, err.networkResponse.statusCode, "Testing BB login failed!")));
     }
 
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-    public void doLogin(String username, String password, NetworkCallback<LoginTokenBB> callback, NetworkErrorCallback error) {
-        step1(success1 -> {
-            String samlLocation = success1.get("Location");
-            mFULogin.fulogin(samlLocation, username, password, samlResponse -> {
-                step5(samlResponse, success5 -> {
-                    String shibsessionKey = success5.get("shibsessionKey");
-                    String shibsessionName = success5.get("shibsessionName");
-                    step6(shibsessionKey, shibsessionName, success6 -> {
-                        String s_session_id = success6.get("s_session_id");
-                        String session_id = success6.get("session_id");
-                        LoginTokenBB token = new LoginTokenBB(username, s_session_id, session_id);
-                        callback.onResponse(token);
+    @Override
+    public void createLoginToken(@NotNull String username, @NotNull String password, @NotNull NetworkCallback<LoginTokenBB> callback, @NotNull NetworkErrorCallback error) {
+        getSAMLLocation(samlLocation -> {
+            fuLogin.fulogin(samlLocation, username, password, samlResponse -> {
+                startShibSession(samlResponse, shibSessionKey -> {
+                    String shibsessionKey = shibSessionKey.getString("shibsessionKey");
+                    String shibsessionName = shibSessionKey.getString("shibsessionName");
+                    startSession(shibsessionKey, shibsessionName, sessionCookies -> {
+                        Bundle bundle = new Bundle();
+                        bundle.putString("username", username);
+                        bundle.putAll(sessionCookies);
+                        LoginTokenBB tokenBB = new LoginTokenBB(bundle);
+                        testToken(tokenBB, callback, error);
                     }, error);
                 }, error);
             }, error);
         }, error);
     }
 
+
+
     /*
      1= GET https://lms.fu-berlin.de/lms-apps/login/sso/index.php
         -> Location-Header: https://identity.fu-berlin.de/idp-fub/profile/SAML2/Redirect/SSO?SAMLResponse=[SAMLResponse]&RelayState=[RelayState]
      */
-    private void step1(final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
-        get("https://lms.fu-berlin.de/lms-apps/login/sso/index.php", null, response -> {
+    private void getSAMLLocation(final NetworkCallback<String> callback, final NetworkErrorCallback errorCallback) {
+        get(BB_SERVER_URL + "lms-apps/login/sso/index.php", null, response -> {
             String location = response.getHeaders().get("Location");
-            if (location==null) {
-                errorCallback.onError(new NetworkError(100211, -1, "Error on getting SAML request!"));
+            if (location == null) {
+                errorCallback.onError(new NetworkError(100211, -1, "Error on getting BB SAML request!"));
                 return;
             }
-            HashMap<String, String> object = new HashMap<>();
-            object.put("Location", location);
-            callback.onResponse(object);
-        }, error -> errorCallback.onError(new NetworkError(100210, error.networkResponse.statusCode, "Error on getting SAML request!")));
+            callback.onResponse(location);
+        }, error -> errorCallback.onError(new NetworkError(100210, error.networkResponse.statusCode, "Error on getting BB SAML request!")));
     }
 
-
-
     /*
      5= POST https://lms.fu-berlin.de/Shibboleth.sso/SAML2/POST
         + Body: SAMLResponse=[SAML-RESPONSE]
         + Header: Content-Type: application/x-www-form-urlencoded
         -> Set-Cookie: _shibsession_[SESS-NR]: [SESS-VALUE]
     */
-    private void step5(String SAMLResponse, final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
+    private void startShibSession(String samlResponse, final NetworkCallback<Bundle> callback, final NetworkErrorCallback errorCallback) {
         HashMap<String, String> body = new HashMap<>();
-        body.put("SAMLResponse", SAMLResponse);
-        post("https://lms.fu-berlin.de/Shibboleth.sso/SAML2/POST", null, body, response -> {
+        body.put("SAMLResponse", samlResponse);
+        post(BB_SERVER_URL + "Shibboleth.sso/SAML2/POST", null, body, response -> {
             String cookies = response.getHeaders().get("Set-Cookie");
             if (cookies ==null) {
-                errorCallback.onError(new NetworkError(100251, -1, "Error on starting KVV session!"));
+                errorCallback.onError(new NetworkError(100251, -1, "Error on starting BB session!"));
                 return;
             }
-            HashMap<String, String> object = new HashMap<>();
-
 
             Pattern pattern = Pattern.compile("(_shibsession_[0-9a-f]+)=([^;]+);");
             Matcher matcher = pattern.matcher(cookies);
             if (!matcher.find()) {
-                errorCallback.onError(new NetworkError(100252, -1, "Error on starting KVV session!"));
-            }
-            object.put("shibsessionKey", matcher.group(1));
-            object.put("shibsessionName", matcher.group(2));
-
-            callback.onResponse(object);
-        }, error -> errorCallback.onError(new NetworkError(100250, error.networkResponse.statusCode, "Error on starting KVV session!")));
+                errorCallback.onError(new NetworkError(100252, -1, "Error on starting BB session!"));
             }
 
+            Bundle bundle = new Bundle();
+            bundle.putString("shibsessionKey", matcher.group(1));
+            bundle.putString("shibsessionName", matcher.group(2));
+
+            callback.onResponse(bundle);
+        }, error -> errorCallback.onError(new NetworkError(100250, error.networkResponse.statusCode, "Error on starting BB session!")));
+    }
 
     /*
      6= https://lms.fu-berlin.de/webapps/bb-auth-provider-shibboleth-bb_bb60/execute/shibbolethLogin?returnUrl=https://lms.fu-berlin.de/webapps/portal/execute/defaultTab&authProviderId=_3_1
         + Cookie: _shibsession_[SESS-NR]: [SESS-VALUE]
         -> Set-Cookie: JSESSIONID: [JSESSION-KVV]
 	*/
-    private void step6(String shibsessionKey, String shibsessionName, final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
+    private void startSession(String shibsessionKey, String shibsessionName, final NetworkCallback<Bundle> callback, final NetworkErrorCallback errorCallback) {
         HashMap<String, String> cookies = new HashMap<>();
         cookies.put(shibsessionKey, shibsessionName);
-        get("https://lms.fu-berlin.de/webapps/bb-auth-provider-shibboleth-bb_bb60/execute/shibbolethLogin?returnUrl=https://lms.fu-berlin.de/webapps/portal/execute/defaultTab&authProviderId=_3_1", cookies, response -> {
-            String cookies1 = response.getHeaders().get("Set-Cookie");
-            if (cookies1 ==null) {
-                errorCallback.onError(new NetworkError(100261, -1, "Cannot finish login process!"));
+        get(BB_SERVER_URL + "webapps/bb-auth-provider-shibboleth-bb_bb60/execute/shibbolethLogin?returnUrl=https://lms.fu-berlin.de/webapps/portal/execute/defaultTab&authProviderId=_3_1", cookies, response -> {
+            String cookiesSet = response.getHeaders().get("Set-Cookie");
+            if (cookiesSet == null) {
+                errorCallback.onError(new NetworkError(100261, -1, "Cannot finish BB login process!"));
                 return;
             }
-            HashMap<String, String> object;
             try {
-                object = getCookie(cookies1, new String[]{"session_id", "s_session_id"});
+                Bundle bundle = getCookie(cookiesSet, new String[]{"session_id", "s_session_id"});
+                callback.onResponse(bundle);
             } catch (NoSuchFieldException e) {
-                errorCallback.onError(new NetworkError(100262, -1, "Cannot finish login process!"));
-                return;
+                errorCallback.onError(new NetworkError(100262, -1, "Cannot finish BB login process!"));
             }
-            callback.onResponse(object);
-        }, error -> errorCallback.onError(new NetworkError(100260, error.networkResponse.statusCode, "Cannot finish login process!")));
+        }, error -> errorCallback.onError(new NetworkError(100260, error.networkResponse.statusCode, "Cannot finish BB login process!")));
     }
 }

app/src/main/java/de/sebse/fuplanner/services/kvv/sync/FULogin.java

@@ -1,12 +1,16 @@
 package de.sebse.fuplanner.services.kvv.sync;
 
 import android.content.Context;
+import android.os.Bundle;
 
 import java.util.HashMap;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
 import androidx.annotation.Nullable;
+
+import org.jetbrains.annotations.NotNull;
+
 import de.sebse.fuplanner.R;
 import de.sebse.fuplanner.tools.Preferences;
 import de.sebse.fuplanner.tools.network.HTTPService;
@@ -19,20 +23,20 @@ public class FULogin extends HTTPService {
         super(context);
     }
 
-    public void fulogin(String requestURI, String username, String password, final NetworkCallback<String> callback, final NetworkErrorCallback errorCallback) {
+    public void fulogin(String samlRequestUri, String username, String password, final NetworkCallback<String> callback, final NetworkErrorCallback errorCallback) {
         String old_shib_idp_session = Preferences.getString(getContext(), R.string.pref_shib_idp_session);
-        step2(requestURI, old_shib_idp_session, success2 -> {
-            String samlResp = success2.get("SAMLResponse");
-            if (samlResp != null) {
-                callback.onResponse(samlResp);
+        startSamlRequest(samlRequestUri, old_shib_idp_session, samlRequest -> {
+            if (samlRequest.containsKey("SAMLResponse")) {
+                callback.onResponse(samlRequest.getString("SAMLResponse", ""));
                 return;
             }
-            String fuJSESSIONID = success2.get("JSESSIONID");
-            step3(fuJSESSIONID, success3 -> {
-                step4(username, password, fuJSESSIONID, success4 -> {
-                    String shib_idp_session = success4.get("shib_idp_session");
+
+            String JSESSIONID = samlRequest.getString("JSESSIONID");
+            openLoginForm(JSESSIONID, success -> {
+                finishLogin(username, password, JSESSIONID, samlResp -> {
+                    String shib_idp_session = samlResp.getString("shib_idp_session");
                     Preferences.setString(getContext(), R.string.pref_shib_idp_session, shib_idp_session);
-                    String samlResponse = success4.get("SAMLResponse");
+                    String samlResponse = samlResp.getString("SAMLResponse");
                     if (samlResponse != null)
                         callback.onResponse(samlResponse);
                     else
@@ -47,24 +51,24 @@ public class FULogin extends HTTPService {
         -> Set-Cookie: JSESSIONID=[JSESSION-FU]
         -> Location: /idp-fub/profile/SAML2/Redirect/SSO?execution=e1s1
     */
-    private void step2(String url, @Nullable String shib_idp_session, final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
+    private void startSamlRequest(String samlRequestUri, @Nullable String shib_idp_session, final NetworkCallback<Bundle> callback, final NetworkErrorCallback errorCallback) {
         HashMap<String, String> cookiesReq = null;
         if (shib_idp_session != null) {
             cookiesReq = new HashMap<>();
             cookiesReq.put("shib_idp_session", shib_idp_session);
         }
-        get(url, cookiesReq, response -> {
+        get(samlRequestUri, cookiesReq, response -> {
             String body = response.getParsed();
             if (body != null) {
                 Pattern pattern = Pattern.compile("name=\"SAMLResponse\" value=\"([0-9a-zA-Z+]+=*)");
                 Matcher matcher = pattern.matcher(body);
                 if (!matcher.find()) {
-                    errorCallback.onError(new NetworkError(100344, -1, "Error on getting SAML response!"));
+                    errorCallback.onError(new NetworkError(100344, -1, "Error on getting FU SAML response!"));
                     return;
                 }
-                HashMap<String, String> object = new HashMap<>();
-                object.put("SAMLResponse", matcher.group(1));
-                callback.onResponse(object);
+                Bundle bundle = new Bundle();
+                bundle.putString("SAMLResponse", matcher.group(1));
+                callback.onResponse(bundle);
                 return;
             }
             String cookies = response.getHeaders().get("Set-Cookie");
@@ -72,14 +76,12 @@ public class FULogin extends HTTPService {
                 errorCallback.onError(new NetworkError(100321, -1, "Error on starting FU session!"));
                 return;
             }
-            HashMap<String, String> object;
             try {
-                object = getCookie(cookies, new String[]{"JSESSIONID"});
+                Bundle bundle = getCookie(cookies, new String[]{"JSESSIONID"});
+                callback.onResponse(bundle);
             } catch (NoSuchFieldException e) {
                 errorCallback.onError(new NetworkError(100322, -1, "Error on starting FU session!"));
-                return;
             }
-            callback.onResponse(object);
         }, error -> errorCallback.onError(new NetworkError(100320, error.networkResponse.statusCode, "Error on starting FU session!")));
     }
 
@@ -87,12 +89,12 @@ public class FULogin extends HTTPService {
      3= GET [Location-Header 2]
         + Cookie: JSESSIONID=[JSESSION-FU]
      */
-    private void step3(String JSESSIONID_FU, final NetworkCallback<Boolean> callback, final NetworkErrorCallback errorCallback) {
+    private void openLoginForm(String JSESSIONID_FU, final NetworkCallback<Boolean> callback, final NetworkErrorCallback errorCallback) {
         HashMap<String, String> cookies = new HashMap<>();
         cookies.put("JSESSIONID", JSESSIONID_FU);
         head("https://identity.fu-berlin.de/idp-fub/profile/SAML2/Redirect/SSO?execution=e1s1", cookies, response -> {
             callback.onResponse(true);
-        }, error -> errorCallback.onError(new NetworkError(100330, error.networkResponse.statusCode, "Error starting login page!")));
+        }, error -> errorCallback.onError(new NetworkError(100330, error.networkResponse.statusCode, "Error starting FU login page!")));
     }
 
     /*
@@ -104,28 +106,28 @@ public class FULogin extends HTTPService {
         -> Set-Cookie: shib_idp_session=[SHIB-IDP-SESSION]
         -> Body SAMLResponse-Input-value
      */
-    private void step4(String username, String password, String JSESSIONID_FU, final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
-        HashMap<String, String> cookies = new HashMap<>();
-        cookies.put("JSESSIONID", JSESSIONID_FU);
+    private void finishLogin(String username, String password, String JSESSIONID_FU, final NetworkCallback<Bundle> callback, final NetworkErrorCallback errorCallback) {
+        HashMap<String, String> cookiesReq = new HashMap<>();
+        cookiesReq.put("JSESSIONID", JSESSIONID_FU);
         HashMap<String, String> body = new HashMap<>();
         body.put("j_username", username);
         body.put("j_password", password);
         body.put("_eventId_proceed", "");
-        post("https://identity.fu-berlin.de/idp-fub/profile/SAML2/Redirect/SSO?execution=e1s1", cookies, body, response -> {
+        post("https://identity.fu-berlin.de/idp-fub/profile/SAML2/Redirect/SSO?execution=e1s1", cookiesReq, body, response -> {
             String content = response.getParsed();
             if (content == null) {
-                errorCallback.onError(new NetworkError(100343, -1, "Error on getting SAML response!"));
+                errorCallback.onError(new NetworkError(100343, -1, "Error on getting FU SAML response!"));
                 return;
             }
 
-            String cookies1 = response.getHeaders().get("Set-Cookie");
-            if (cookies1 ==null) {
+            String cookies = response.getHeaders().get("Set-Cookie");
+            if (cookies == null) {
                 errorCallback.onError(new NetworkError(100341, -1, "Error on logging in to FU Identity Server!"));
                 return;
             }
-            HashMap<String, String> object;
+            Bundle bundle;
             try {
-                object = getCookie(cookies1, new String[]{"shib_idp_session"});
+                bundle = getCookie(cookies, new String[]{"shib_idp_session"});
             } catch (NoSuchFieldException e) {
                 errorCallback.onError(new NetworkError(100342, -1, "Error on logging in to FU Identity Server!"));
                 return;
@@ -136,8 +138,8 @@ public class FULogin extends HTTPService {
                 errorCallback.onError(new NetworkError(100344, -1, "Error on getting SAML response!"));
                 return;
             }
-            object.put("SAMLResponse", matcher.group(1));
-            callback.onResponse(object);
+            bundle.putString("SAMLResponse", matcher.group(1));
+            callback.onResponse(bundle);
         }, error -> errorCallback.onError(new NetworkError(100345, error.networkResponse.statusCode, "Error on logging in to FU Identity Server!")));
     }
 }

app/src/main/java/de/sebse/fuplanner/services/kvv/sync/KVVLogin.java

@@ -1,176 +0,0 @@
-package de.sebse.fuplanner.services.kvv.sync;
-
-import android.content.Context;
-
-import org.jetbrains.annotations.NotNull;
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import java.util.HashMap;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-
-import de.sebse.fuplanner.services.kvv.Constants;
-import de.sebse.fuplanner.services.kvv.types.LoginTokenKVV;
-import de.sebse.fuplanner.tools.network.HTTPService;
-import de.sebse.fuplanner.tools.network.NetworkCallback;
-import de.sebse.fuplanner.tools.network.NetworkError;
-import de.sebse.fuplanner.tools.network.NetworkErrorCallback;
-
-public class KVVLogin extends HTTPService {
-    private final FULogin mFULogin;
-    private long lastHash;
-    private long lastSync;
-    private static final long MAX_CACHE_TIME = 1000 * 60; // 1 minute
-
-    public static final String KVV_SERVER_URL = Constants.KVV_SERVER_URL;
-
-    public KVVLogin(Context context, FULogin fuLogin) {
-        super(context);
-        this.mFULogin = fuLogin;
-    }
-
-
-    public void testLoginToken(@NotNull LoginTokenKVV token, @NotNull NetworkCallback<LoginTokenKVV> callback, @NotNull NetworkErrorCallback errorCallback) {
-        if (token.hashCode() == lastHash && lastSync + MAX_CACHE_TIME > System.currentTimeMillis() && token.getFullName() != null) {
-            callback.onResponse(token);
-            return;
-        }
-        get(String.format(KVV_SERVER_URL+"direct/profile/%s.json", token.getUsername()), token.getCookies(), response -> {
-            String body = response.getParsed();
-            if (body == null) {
-                errorCallback.onError(new NetworkError(100172, 403, "Testing login failed!"));
-                return;
-            }
-            try {
-                JSONObject json = new JSONObject(body);
-                String displayName = json.getString("displayName");
-                String email = json.getString("email");
-                token.setAdditionals(displayName, email);
-                lastSync = System.currentTimeMillis();
-                lastHash = token.hashCode();
-                callback.onResponse(token);
-            } catch (JSONException e) {
-                errorCallback.onError(new NetworkError(100171, 403, "Cannot parse profile!"));
-            }
-        }, error -> errorCallback.onError(new NetworkError(100170, error.networkResponse.statusCode, "Testing login failed!")));
-    }
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-    public void doLogin(String username, String password, NetworkCallback<LoginTokenKVV> callback, NetworkErrorCallback error) {
-        step0(username, success -> {
-            step1(success1 -> {
-                String samlLocation = success1.get("Location");
-                mFULogin.fulogin(samlLocation, username, password, samlResponse -> {
-                    step5(samlResponse, success5 -> {
-                        String shibsessionKey = success5.get("shibsessionKey");
-                        String shibsessionName = success5.get("shibsessionName");
-                        step6(shibsessionKey, shibsessionName, success6 -> {
-                            String kvvJSESSIONID = success6.get("JSESSIONID");
-                            LoginTokenKVV token = new LoginTokenKVV(username, kvvJSESSIONID);
-                            callback.onResponse(token);
-                        }, error);
-                    }, error);
-                }, error);
-            }, error);
-        }, error);
-    }
-
-    private void step0(String username, final NetworkCallback<Boolean> callback, final NetworkErrorCallback errorCallback) {
-        get(String.format(KVV_SERVER_URL+"direct/profile/%s", username), null, result -> {
-            callback.onResponse(true);
-        }, error -> {
-            if (error.networkResponse.statusCode == 500) {
-                errorCallback.onError(new NetworkError(100101, error.networkResponse.statusCode, "KVV not available!"));
-            } else {
-                callback.onResponse(true);
-            }
-        });
-    }
-
-    /*
-     1= GET https://mycampus.imp.fu-berlin.de/Shibboleth.sso/Login?entityID=https://identity.fu-berlin.de/idp-fub
-        -> Location-Header: https://identity.fu-berlin.de/idp-fub/profile/SAML2/Redirect/SSO?SAMLResponse=[SAMLResponse]&RelayState=[RelayState]
-     */
-    private void step1(final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
-        get(KVV_SERVER_URL+"Shibboleth.sso/Login?entityID=https://identity.fu-berlin.de/idp-fub", null, response -> {
-            String location = response.getHeaders().get("Location");
-            if (location==null) {
-                errorCallback.onError(new NetworkError(100111, -1, "Error on getting SAML request!"));
-                return;
-            }
-            HashMap<String, String> object = new HashMap<>();
-            object.put("Location", location);
-            callback.onResponse(object);
-        }, error -> errorCallback.onError(new NetworkError(100110, error.networkResponse.statusCode, "Error on getting SAML request!")));
-    }
-
-    /*
-     5= POST https://mycampus.imp.fu-berlin.de/Shibboleth.sso/SAML2/POST
-        + Body: SAMLResponse=[SAML-RESPONSE]
-        + Header: Content-Type: application/x-www-form-urlencoded
-        -> Set-Cookie: _shibsession_[SESS-NR]: [SESS-VALUE]
-    */
-    private void step5(String SAMLResponse, final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
-        HashMap<String, String> body = new HashMap<>();
-        body.put("SAMLResponse", SAMLResponse);
-        post(KVV_SERVER_URL+"Shibboleth.sso/SAML2/POST", null, body, response -> {
-            String cookies = response.getHeaders().get("Set-Cookie");
-            if (cookies ==null) {
-                errorCallback.onError(new NetworkError(100151, -1, "Error on starting KVV session!"));
-                return;
-            }
-            HashMap<String, String> object = new HashMap<>();
-
-
-            Pattern pattern = Pattern.compile("(_shibsession_[0-9a-f]+)=([^;]+);");
-            Matcher matcher = pattern.matcher(cookies);
-            if (!matcher.find()) {
-                errorCallback.onError(new NetworkError(100152, -1, "Error on starting KVV session!"));
-            }
-            object.put("shibsessionKey", matcher.group(1));
-            object.put("shibsessionName", matcher.group(2));
-
-            callback.onResponse(object);
-        }, error -> errorCallback.onError(new NetworkError(100150, error.networkResponse.statusCode, "Error on starting KVV session!")));
-    }
-
-
-    /*
-     6= https://mycampus.imp.fu-berlin.de/sakai-login-tool/container
-        + Cookie: _shibsession_[SESS-NR]: [SESS-VALUE]
-        -> Set-Cookie: JSESSIONID: [JSESSION-KVV]
-	*/
-    private void step6(String shibsessionKey, String shibsessionName, final NetworkCallback<HashMap<String, String>> callback, final NetworkErrorCallback errorCallback) {
-        HashMap<String, String> cookies = new HashMap<>();
-        cookies.put(shibsessionKey, shibsessionName);
-        get(KVV_SERVER_URL+"sakai-login-tool/container", cookies, response -> {
-            String cookies1 = response.getHeaders().get("Set-Cookie");
-            if (cookies1 ==null) {
-                errorCallback.onError(new NetworkError(100161, -1, "Cannot finish login process!"));
-                return;
-            }
-            HashMap<String, String> object;
-            try {
-                object = getCookie(cookies1, new String[]{"JSESSIONID"});
-            } catch (NoSuchFieldException e) {
-                errorCallback.onError(new NetworkError(100162, -1, "Cannot finish login process!"));
-                return;
-            }
-            callback.onResponse(object);
-        }, error -> errorCallback.onError(new NetworkError(100160, error.networkResponse.statusCode, "Cannot finish login process!")));
-    }
-}

app/src/main/java/de/sebse/fuplanner/services/kvv/sync/KVVSyncAdapter.java

@@ -1,203 +0,0 @@
-package de.sebse.fuplanner.services.kvv.sync;
-
-import android.accounts.Account;
-import android.content.AbstractThreadedSyncAdapter;
-import android.content.ComponentName;
-import android.content.ContentProviderClient;
-import android.content.Context;
-import android.content.Intent;
-import android.content.ServiceConnection;
-import android.content.SyncResult;
-import android.os.Bundle;
-import android.os.IBinder;
-
-import java.util.ArrayList;
-import java.util.Iterator;
-
-import androidx.annotation.StringRes;
-import de.sebse.fuplanner.R;
-import de.sebse.fuplanner.fragments.moddetails.ModulePart;
-import de.sebse.fuplanner.services.kvv.KVV;
-import de.sebse.fuplanner.services.kvv.types.Announcement;
-import de.sebse.fuplanner.services.kvv.types.Assignment;
-import de.sebse.fuplanner.services.kvv.types.AssignmentList;
-import de.sebse.fuplanner.services.kvv.types.EventList;
-import de.sebse.fuplanner.services.kvv.types.Grade;
-import de.sebse.fuplanner.services.kvv.types.Gradebook;
-import de.sebse.fuplanner.services.kvv.types.Modules;
-import de.sebse.fuplanner.services.kvv.types.Resource;
-import de.sebse.fuplanner.tools.CustomNotificationManager;
-import de.sebse.fuplanner.tools.NewAsyncQueue;
-import de.sebse.fuplanner.tools.UtilsDate;
-import de.sebse.fuplanner.tools.logging.Logger;
-
-import static de.sebse.fuplanner.MainActivity.FRAGMENT_MODULES_DETAILS;
-
-public class KVVSyncAdapter extends AbstractThreadedSyncAdapter {
-    private KVV mKVV;
-    private Logger log = new Logger(this);
-    private NewAsyncQueue mQueue = new NewAsyncQueue();
-
-
-    private boolean mBound = false;
-    private boolean mWaitForBound = false;
-    private ServiceConnection mConnection = new ServiceConnection() {
-        @Override
-        public void onServiceConnected(ComponentName className, IBinder service) {
-            // We've bound to LocalService, cast the IBinder and get LocalService instance
-            KVV.LocalBinder binder = (KVV.LocalBinder) service;
-            mKVV = binder.getService();
-            mBound = true;
-            if (mWaitForBound) {
-                mWaitForBound = false;
-                mQueue.next();
-            }
-        }
-
-        @Override
-        public void onServiceDisconnected(ComponentName arg0) {
-            mBound = false;
-            mKVV = null;
-        }
-    };
-
-
-    /**
-     * Set up the sync adapter
-     */
-    KVVSyncAdapter(Context context, boolean autoInitialize) {
-        super(context, autoInitialize);
-        init(context);
-    }
-    /**
-     * Set up the sync adapter. This form of the
-     * constructor maintains compatibility with Android 3.0
-     * and later platform versions
-     */
-    public KVVSyncAdapter(
-            Context context,
-            boolean autoInitialize,
-            boolean allowParallelSyncs) {
-        super(context, autoInitialize, allowParallelSyncs);
-        init(context);
-    }
-
-    private void init(Context context) {
-        // Bind to LocalService
-    }
-
-    /*
-     * Specify the code you want to run in the sync adapter. The entire
-     * sync adapter runs in a background thread, so you don't have to set
-     * up your own background processing.
-     */
-    @Override
-    public void onPerformSync(
-            Account account,
-            Bundle extras,
-            String authority,
-            ContentProviderClient provider,
-            SyncResult syncResult) {
-        if (!mBound) {
-            Intent intent = new Intent(getContext(), KVV.class);
-            getContext().bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
-            mWaitForBound = true;
-            mQueue.add(() -> {});
-        }
-        mQueue.add(() -> {
-            mKVV.account().restoreOnlineLogin(bool -> {
-                mQueue.next();
-            });
-        });
-        mQueue.add(() -> {
-            if (!mKVV.account().isLoggedIn()) {
-                log.w("Not logged in!");
-                return;
-            }
-            mKVV.modules().list().reloadIfOutdated();
-            mKVV.modules().list().recv(success -> {
-                final int[] latch = {0};
-                Iterator<Modules.Module> iterator = success.latestSemesterIterator();
-                while (iterator.hasNext()) {
-                    latch[0] += 1;
-                    iterator.next();
-                }
-                iterator = success.latestSemesterIterator();
-                while (iterator.hasNext()) {
-                    Modules.Module module = iterator.next();
-                    final ArrayList<Announcement> announcements = module.announcements;
-                    final AssignmentList assignments = module.assignments;
-                    final EventList events = module.events;
-                    final Gradebook gradebook = module.gradebook;
-                    final ArrayList<Resource> resources = module.resources;
-                    mKVV.modules().details().recv(module, success1 -> {
-                        if (success1.second) {
-                            sendNotifications(announcements, module.announcements, module.title, Announcement::getTitle, Announcement::getId,
-                                    module.getID(), ModulePart.ANNOUNCEMENT,
-                                    R.string.announcement_updated, R.string.announcement_added, R.string.announcement_removed);
-                            sendNotifications(assignments, module.assignments, module.title, Assignment::getTitle, Assignment::getId,
-                                    module.getID(), ModulePart.ASSIGNMENT,
-                                    R.string.assignment_updated, R.string.assignment_added, R.string.assignment_removed);
-                            sendNotifications(events, module.events, module.title, evt -> evt.getTitle()+" - "+UtilsDate.getModifiedDate(evt.getStartDate()), event -> event.getStartDate() +event.getType()+event.getTitle(),
-                                    module.getID(), ModulePart.EVENT,
-                                    R.string.event_updated, R.string.event_added, R.string.event_removed);
-                            sendNotifications(gradebook, module.gradebook, module.title, Grade::getItemName, Grade::getItemName,
-                                    module.getID(), ModulePart.GRADEBOOK,
-                                    R.string.gradebook_updated, R.string.gradebook_added, R.string.gradebook_removed);
-                            sendNotifications(resources, module.resources, module.title, Resource::getTitle, Resource::getUrl,
-                                    module.getID(), ModulePart.RESOURCES,
-                                    R.string.resource_updated, R.string.resource_added, R.string.resource_removed);
-                            if (--latch[0] == 0) mQueue.next();
-                        }
-                    }, error -> {
-                        log.e(error);
-                        if (--latch[0] == 0) mQueue.next();
-                    }, true);
-                }
-            }, msg -> {
-                log.e(msg);
-                mQueue.next();
-            }, true);
-        });
-        mQueue.add(() -> {
-            mBound = false;
-            mKVV = null;
-            getContext().unbindService(mConnection);
-        });
-    }
-
-    private <T> void sendNotifications(Iterable<T> oldList, Iterable<T> newList, String title, StringInterface<T> titleInterface, StringInterface<T> idInterface, String moduleId, int modulePart, @StringRes int updateRes, @StringRes int addRes, @StringRes int removeRes) {
-        if (oldList == null || newList == null) {
-            return;
-        }
-        ArrayList<T> obsoletes = new ArrayList<>();
-        for (T old: oldList) {
-            obsoletes.add(old);
-        }
-        String targetData = moduleId+"."+ModulePart.getPageByPart(modulePart);
-        for (T newEntry: newList) {
-            boolean found = false;
-            for (T oldEntry: oldList) {
-                if (idInterface.get(newEntry).equals(idInterface.get(oldEntry))) {
-                    found = true;
-                    if (newEntry.hashCode() != oldEntry.hashCode()) {
-                        CustomNotificationManager.sendNotification(getContext(), getContext().getString(updateRes, title), titleInterface.get(newEntry), FRAGMENT_MODULES_DETAILS, targetData);
-                    }
-                    obsoletes.remove(oldEntry);
-                    break;
-                }
-            }
-            if (!found) {
-                CustomNotificationManager.sendNotification(getContext(), getContext().getString(addRes, title), titleInterface.get(newEntry), FRAGMENT_MODULES_DETAILS, targetData);
-            }
-        }
-        for (T oldEntry: obsoletes) {
-            CustomNotificationManager.sendNotification(getContext(), getContext().getString(removeRes, title), titleInterface.get(oldEntry), FRAGMENT_MODULES_DETAILS, targetData);
-        }
-    }
-
-    @FunctionalInterface
-    interface StringInterface<T> {
-        String get(T element);
-    }
-}

app/src/main/java/de/sebse/fuplanner/services/kvv/sync/LoginRoutine.java

@@ -0,0 +1,55 @@
+package de.sebse.fuplanner.services.kvv.sync;
+
+import android.content.Context;
+import android.os.Bundle;
+
+import org.jetbrains.annotations.NotNull;
+
+import de.sebse.fuplanner.services.kvv.types.LoginToken;
+import de.sebse.fuplanner.tools.network.HTTPService;
+import de.sebse.fuplanner.tools.network.NetworkCallback;
+import de.sebse.fuplanner.tools.network.NetworkErrorCallback;
+
+public abstract class LoginRoutine<T extends LoginToken> extends HTTPService {
+    private long lastHash;
+    private long lastSync;
+    private static final long MAX_CACHE_TIME = 1000 * 60; // 1 minute
+
+    public LoginRoutine(Context context) {
+        super(context);
+    }
+
+    public final void testToken(@NotNull T token, @NotNull NetworkCallback<T> callback, @NotNull NetworkErrorCallback error) {
+        if (token.hashCode() == lastHash && lastSync + MAX_CACHE_TIME > System.currentTimeMillis() && token.hasAdditionals()) {
+            callback.onResponse(token);
+            return;
+        }
+
+        checkToken(token, (bundle) -> {
+            token.setAdditionals(bundle);
+            lastSync = System.currentTimeMillis();
+            lastHash = token.hashCode();
+            callback.onResponse(token);
+        }, error);
+    }
+
+    public abstract void doesAccountExists(@NotNull String username, @NotNull NetworkCallback<Boolean> callback, @NotNull NetworkErrorCallback error);
+
+    protected abstract void checkToken(@NotNull T token, @NotNull NetworkCallback<Bundle> bundleCallback, @NotNull NetworkErrorCallback error);
+
+    public final void login(@NotNull String username, @NotNull String password, @NotNull NetworkCallback<T> callback, @NotNull NetworkErrorCallback error) {
+        doesAccountExists(username, success -> {
+            if (success) {
+                createLoginToken(username, password, callback, error);
+                return;
+            } else {
+                callback.onResponse(createUnavailableToken());
+                return;
+            }
+        }, error);
+    }
+
+    protected abstract void createLoginToken(@NotNull String username, @NotNull String password, @NotNull NetworkCallback<T> callback, @NotNull NetworkErrorCallback error);
+
+    protected abstract T createUnavailableToken();
+}

app/src/main/java/de/sebse/fuplanner/services/kvv/sync/ModuleSyncAdapter.java

@@ -0,0 +1,373 @@
+package de.sebse.fuplanner.services.kvv.sync;
+
+import android.Manifest;
+import android.accounts.Account;
+import android.accounts.AccountManager;
+import android.content.AbstractThreadedSyncAdapter;
+import android.content.ComponentName;
+import android.content.ContentProviderClient;
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.content.SyncResult;
+import android.content.pm.PackageManager;
+import android.database.Cursor;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.provider.CalendarContract.Calendars;
+import android.provider.CalendarContract.Events;
+import android.util.Pair;
+
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.Iterator;
+
+import androidx.annotation.StringRes;
+import androidx.core.content.ContextCompat;
+
+import de.sebse.fuplanner.R;
+import de.sebse.fuplanner.fragments.moddetails.ModulePart;
+import de.sebse.fuplanner.services.kvv.KVV;
+import de.sebse.fuplanner.services.kvv.types.Announcement;
+import de.sebse.fuplanner.services.kvv.types.Assignment;
+import de.sebse.fuplanner.services.kvv.types.AssignmentList;
+import de.sebse.fuplanner.services.kvv.types.Event;
+import de.sebse.fuplanner.services.kvv.types.EventList;
+import de.sebse.fuplanner.services.kvv.types.Grade;
+import de.sebse.fuplanner.services.kvv.types.Gradebook;
+import de.sebse.fuplanner.services.kvv.types.Modules;
+import de.sebse.fuplanner.services.kvv.types.Resource;
+import de.sebse.fuplanner.tools.CustomNotificationManager;
+import de.sebse.fuplanner.tools.NewAsyncQueue;
+import de.sebse.fuplanner.tools.Preferences;
+import de.sebse.fuplanner.tools.UtilsDate;
+import de.sebse.fuplanner.tools.logging.Logger;
+
+import static android.provider.CalendarContract.CALLER_IS_SYNCADAPTER;
+import static de.sebse.fuplanner.MainActivity.FRAGMENT_MODULES_DETAILS;
+
+public class KVVSyncAdapter extends AbstractThreadedSyncAdapter {
+    private KVV mKVV;
+    private Logger log = new Logger(this);
+    private NewAsyncQueue mQueue = new NewAsyncQueue();
+
+
+    private boolean mBound = false;
+    private boolean mWaitForBound = false;
+    private ServiceConnection mConnection = new ServiceConnection() {
+        @Override
+        public void onServiceConnected(ComponentName className, IBinder service) {
+            // We've bound to LocalService, cast the IBinder and get LocalService instance
+            KVV.LocalBinder binder = (KVV.LocalBinder) service;
+            mKVV = binder.getService();
+            mBound = true;
+            if (mWaitForBound) {
+                mWaitForBound = false;
+                mQueue.next();
+            }
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName arg0) {
+            mBound = false;
+            mKVV = null;
+        }
+    };
+
+
+    /**
+     * Set up the sync adapter
+     */
+    KVVSyncAdapter(Context context, boolean autoInitialize) {
+        super(context, autoInitialize);
+        init(context);
+    }
+    /**
+     * Set up the sync adapter. This form of the
+     * constructor maintains compatibility with Android 3.0
+     * and later platform versions
+     */
+    public KVVSyncAdapter(
+            Context context,
+            boolean autoInitialize,
+            boolean allowParallelSyncs) {
+        super(context, autoInitialize, allowParallelSyncs);
+        init(context);
+    }
+
+    private void init(Context context) {
+        // Bind to LocalService
+    }
+
+    /*
+     * Specify the code you want to run in the sync adapter. The entire
+     * sync adapter runs in a background thread, so you don't have to set
+     * up your own background processing.
+     */
+    @Override
+    public void onPerformSync(
+            Account account,
+            Bundle extras,
+            String authority,
+            ContentProviderClient provider,
+            SyncResult syncResult) {
+        if (!mBound && !mWaitForBound) {
+            Intent intent = new Intent(getContext(), KVV.class);
+            getContext().bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
+            mWaitForBound = true;
+            mQueue.add(() -> {});
+        }
+        mQueue.add(() -> {
+            mKVV.account().restoreOnlineLogin(bool -> {
+                mQueue.next();
+            });
+        });
+        mQueue.add(() -> {
+            if (!mKVV.account().isLoggedIn()) {
+                log.w("Not logged in!");
+                mQueue.next();
+                return;
+            }
+            mKVV.modules().list().reloadIfOutdated();
+            mKVV.modules().list().recv(success -> {
+                final int[] latch = {0};
+                Iterator<Modules.Module> iterator = success.latestSemesterIterator();
+                while (iterator.hasNext()) {
+                    latch[0] += 1;
+                    iterator.next();
+                }
+                boolean doAddToCalendar = createCalendar(account);
+                log.d("sync calendar", doAddToCalendar);
+                iterator = success.latestSemesterIterator();
+                while (iterator.hasNext()) {
+                    Modules.Module module = iterator.next();
+                    final ArrayList<Announcement> announcements = module.announcements;
+                    final AssignmentList assignments = module.assignments;
+                    final EventList events = module.events;
+                    final Gradebook gradebook = module.gradebook;
+                    final ArrayList<Resource> resources = module.resources;
+                    mKVV.modules().details().recv(module, success1 -> {
+                        if (success1.second) {
+                            sendNotifications(announcements, module.announcements, module.title, Announcement::getTitle, Announcement::getId,
+                                    module.getID(), ModulePart.ANNOUNCEMENT,
+                                    R.string.announcement_updated, R.string.announcement_added, R.string.announcement_removed);
+                            sendNotifications(assignments, module.assignments, module.title, Assignment::getTitle, Assignment::getId,
+                                    module.getID(), ModulePart.ASSIGNMENT,
+                                    R.string.assignment_updated, R.string.assignment_added, R.string.assignment_removed);
+                            //ArrayList<Event> differencesAdd = new ArrayList<>();
+                            //ArrayList<Pair<Event, Event>> differencesUpd = new ArrayList<>();
+                            //ArrayList<Event> differencesDel = new ArrayList<>();
+                            sendNotifications(events, module.events, module.title, evt -> evt.getTitle()+" - "+UtilsDate.getModifiedDate(evt.getStartDate()), event -> event.getStartDate() +event.getType()+event.getTitle(),
+                                    module.getID(), ModulePart.EVENT,
+                                    R.string.event_updated, R.string.event_added, R.string.event_removed/*,
+                                    differencesAdd, differencesUpd, differencesDel*/);
+                            sendNotifications(gradebook, module.gradebook, module.title, Grade::getItemName, Grade::getItemName,
+                                    module.getID(), ModulePart.GRADEBOOK,
+                                    R.string.gradebook_updated, R.string.gradebook_added, R.string.gradebook_removed);
+                            sendNotifications(resources, module.resources, module.title, Resource::getTitle, Resource::getUrl,
+                                    module.getID(), ModulePart.RESOURCES,
+                                    R.string.resource_updated, R.string.resource_added, R.string.resource_removed);
+                            if (doAddToCalendar) {
+                                addToCalendar(module.events, account);
+                            }
+                            if (--latch[0] == 0) {
+                                forceSync();
+                                mQueue.next();
+                            }
+                        }
+                    }, error -> {
+                        log.e(error);
+                        if (--latch[0] == 0) {
+                            forceSync();
+                            mQueue.next();
+                        }
+                    }, true);
+                }
+            }, error -> {
+                log.e(error);
+                mQueue.next();
+            }, true);
+        });
+        mQueue.add(() -> {
+            if (mBound) {
+                getContext().unbindService(mConnection);
+            }
+            mBound = false;
+            mKVV = null;
+            mQueue.next();
+        });
+    }
+
+    static Uri asSyncAdapter(Uri uri, String account, String accountType) {
+        return uri.buildUpon()
+                .appendQueryParameter(CALLER_IS_SYNCADAPTER, "true")
+                .appendQueryParameter(Calendars.ACCOUNT_NAME, account)
+                .appendQueryParameter(Calendars.ACCOUNT_TYPE, accountType).build();
+    }
+
+    private static Uri createCalendarWithName(Context ctx, Account account, String calendarName) {
+        String accountName = account.name;
+        String accountType = account.type;
+        Uri target = asSyncAdapter(Calendars.CONTENT_URI, accountName, accountType);
+
+        ContentValues values = new ContentValues();
+        values.put(Calendars._ID, calendarName.hashCode());
+        values.put(Calendars.ACCOUNT_NAME, accountName);
+        values.put(Calendars.ACCOUNT_TYPE, accountType);
+        values.put(Calendars.NAME, calendarName);
+        values.put(Calendars.CALENDAR_DISPLAY_NAME, calendarName);
+        values.put(Calendars.CALENDAR_COLOR, 0x00FF00);
+        values.put(Calendars.CALENDAR_ACCESS_LEVEL, Calendars.CAL_ACCESS_READ);
+        values.put(Calendars.OWNER_ACCOUNT, accountName);
+        values.put(Calendars.VISIBLE, 1);
+        values.put(Calendars.SYNC_EVENTS, 1);
+        values.put(Calendars.CALENDAR_TIME_ZONE, "Europe/Berlin");
+        values.put(Calendars.CAN_PARTIALLY_UPDATE, 1);
+        values.put(Calendars.CAL_SYNC1, System.currentTimeMillis());
+
+        return ctx.getContentResolver().insert(target, values);
+    }
+
+    private int createEvents(Context ctx, Account account, String calendarName, EventList events) {
+        String accountName = account.name;
+        String accountType = account.type;
+        Uri target = asSyncAdapter(Events.CONTENT_URI, accountName, accountType);
+
+        ContentValues[] contentValues = new ContentValues[events.size()];
+        for (int i = 0; i < contentValues.length; i++) {
+            Event event  = events.get(i);
+            ContentValues values = new ContentValues();
+            //values.put(Events._ID, event.hashCode());
+            values.put(Events.TITLE, event.getTitle());
+            values.put(Events.DTSTART, event.getStartDate());
+            values.put(Events.DTEND, event.getEndDate());
+            values.put(Events.CALENDAR_ID, calendarName.hashCode());
+            contentValues[i] = values;
+            //ctx.getContentResolver().insert(target, values);
+        }
+        log.d(contentValues.length);
+        return ctx.getContentResolver().bulkInsert(target, contentValues);
+    }
+
+    private static Cursor getCalendars(Context ctx, Account account) {
+        Uri target = asSyncAdapter(Calendars.CONTENT_URI, account.name, account.type);
+
+        return ctx.getContentResolver().query(target, new String[]{Calendars.CALENDAR_DISPLAY_NAME, Calendars.ACCOUNT_NAME}, null, null, null);
+    }
+
+    private static Cursor getEvents(Context ctx, Account account) {
+        Uri target = asSyncAdapter(Events.CONTENT_URI, account.name, account.type);
+
+        return ctx.getContentResolver().query(target, new String[]{Events.TITLE, Events.DTSTART}, null, null, null);
+    }
+
+    private static int deleteCalendars(Context ctx, Account account) {
+        String accountName = account.name;
+        String accountType = account.type;
+        Uri target = asSyncAdapter(Calendars.CONTENT_URI, account.name, account.type);
+
+        ContentValues values = new ContentValues();
+        values.put(Calendars.ACCOUNT_NAME, accountName);
+        values.put(Calendars.ACCOUNT_TYPE, accountType);
+
+        return ctx.getContentResolver().delete(target, null, null);
+    }
+
+    private void addToCalendar(EventList events, Account account) {
+        if (events == null) {
+            return;
+        }
+        if (ContextCompat.checkSelfPermission(getContext(), Manifest.permission.WRITE_CALENDAR) == PackageManager.PERMISSION_GRANTED
+                && ContextCompat.checkSelfPermission(getContext(), Manifest.permission.READ_CALENDAR) == PackageManager.PERMISSION_GRANTED) {
+            boolean integrationEnabled = Preferences.getBoolean(getContext(), R.string.pref_add_calendar);
+            if (integrationEnabled) {
+                createEvents(getContext(), account, getContext().getString(R.string.app_name), events);
+            }
+        }
+    }
+
+    private boolean createCalendar(Account account) {
+        if (ContextCompat.checkSelfPermission(getContext(), Manifest.permission.WRITE_CALENDAR) == PackageManager.PERMISSION_GRANTED
+                && ContextCompat.checkSelfPermission(getContext(), Manifest.permission.READ_CALENDAR) == PackageManager.PERMISSION_GRANTED) {
+            boolean integrationEnabled = Preferences.getBoolean(getContext(), R.string.pref_add_calendar);
+            if (integrationEnabled) {
+                //log.w("No calendar found! Add calendar...");
+                deleteCalendars(getContext(), account);
+                createCalendarWithName(getContext(), account, getContext().getString(R.string.app_name));
+                return true;
+            } else {
+                log.w("Calendar found and integration disabled! Delete calendar...");
+                deleteCalendars(getContext(), account);
+                return false;
+            }
+        } else {
+            log.w("Permission calendar not granted!");
+            return false;
+        }
+    }
+
+    private void forceSync() {
+        // Force a sync
+        Bundle extras = new Bundle();
+        extras.putBoolean(ContentResolver.SYNC_EXTRAS_EXPEDITED, true);
+        extras.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
+        AccountManager am = AccountManager.get(getContext());
+        Account[] acc = am.getAccountsByType("com.google");
+        Account account = null;
+        if (acc.length>0) {
+            account = acc[0];
+            ContentResolver.requestSync(account, "com.android.calendar", extras);
+        }
+    }
+
+    private <T> void sendNotifications(Iterable<T> oldList, Iterable<T> newList, String title, StringInterface<T> titleInterface, StringInterface<T> idInterface, String moduleId, int modulePart, @StringRes int updateRes, @StringRes int addRes, @StringRes int removeRes) {
+        sendNotifications(oldList, newList, title, titleInterface, idInterface, moduleId, modulePart, updateRes, addRes, removeRes, null, null, null);
+    }
+
+    private <T> void sendNotifications(Iterable<T> oldList, Iterable<T> newList, String title, StringInterface<T> titleInterface, StringInterface<T> idInterface, String moduleId, int modulePart, @StringRes int updateRes, @StringRes int addRes, @StringRes int removeRes, ArrayList<T> changesAdd, ArrayList<Pair<T, T>> changesUpd, ArrayList<T> changesDel) {
+            if (oldList == null || newList == null) {
+            return;
+        }
+        ArrayList<T> obsoletes = new ArrayList<>();
+        for (T old: oldList) {
+            obsoletes.add(old);
+        }
+        String targetData = moduleId+"."+ModulePart.getPageByPart(modulePart);
+        for (T newEntry: newList) {
+            boolean found = false;
+            for (T oldEntry: oldList) {
+                if (idInterface.get(newEntry).equals(idInterface.get(oldEntry))) {
+                    found = true;
+                    if (newEntry.hashCode() != oldEntry.hashCode()) {
+                        CustomNotificationManager.sendNotification(getContext(), getContext().getString(updateRes, title), titleInterface.get(newEntry), FRAGMENT_MODULES_DETAILS, targetData);
+                        if (changesUpd != null) {
+                            changesUpd.add(new Pair<>(oldEntry, newEntry));
+                        }
+                    }
+                    obsoletes.remove(oldEntry);
+                    break;
+                }
+            }
+            if (!found) {
+                CustomNotificationManager.sendNotification(getContext(), getContext().getString(addRes, title), titleInterface.get(newEntry), FRAGMENT_MODULES_DETAILS, targetData);
+                if (changesAdd != null) {
+                    changesAdd.add(newEntry);
+                }
+            }
+        }
+        for (T oldEntry: obsoletes) {
+            CustomNotificationManager.sendNotification(getContext(), getContext().getString(removeRes, title), titleInterface.get(oldEntry), FRAGMENT_MODULES_DETAILS, targetData);
+            if (changesDel != null) {
+                changesDel.add(oldEntry);
+            }
+        }
+    }
+
+    @FunctionalInterface
+    interface StringInterface<T> {
+        String get(T element);
+    }
+}

app/src/main/java/de/sebse/fuplanner/services/kvv/sync/WBLogin.java

@@ -0,0 +1,158 @@
+package de.sebse.fuplanner.services.kvv.sync;
+
+import android.content.Context;
+import android.os.Bundle;
+
+import org.jetbrains.annotations.NotNull;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.HashMap;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import de.sebse.fuplanner.services.kvv.types.LoginTokenWB;
+import de.sebse.fuplanner.tools.network.NetworkCallback;
+import de.sebse.fuplanner.tools.network.NetworkError;
+import de.sebse.fuplanner.tools.network.NetworkErrorCallback;
+
+import static de.sebse.fuplanner.services.kvv.Constants.WB_SERVER_URL;
+
+public class WBLogin extends LoginRoutine<LoginTokenWB> {
+    private final FULogin fuLogin;
+
+    public WBLogin(Context context, FULogin fuLogin) {
+        super(context);
+        this.fuLogin = fuLogin;
+    }
+
+    @Override
+    public void doesAccountExists(@NotNull String username, @NotNull NetworkCallback<Boolean> callback, @NotNull NetworkErrorCallback error) {
+        callback.onResponse(true);
+        get(String.format(WB_SERVER_URL + "direct/profile/%s.json", username), null, response -> {
+            callback.onResponse(true);
+        }, err -> {
+            if (err.networkResponse.statusCode == 403) {
+                callback.onResponse(true);
+            } else {
+                callback.onResponse(false);
+            }
+        });
+    }
+
+    @Override
+    protected LoginTokenWB createUnavailableToken() {
+        return new LoginTokenWB();
+    }
+
+    @Override
+    protected void checkToken(@NotNull LoginTokenWB token, @NotNull NetworkCallback<Bundle> bundleCallback, @NotNull NetworkErrorCallback error) {
+        get(String.format(WB_SERVER_URL + "direct/profile/%s.json", token.getUsername()), token.getCookies(), response -> {
+            String body = response.getParsed();
+            if (body == null) {
+                error.onError(new NetworkError(100172, 403, "Testing WB login failed!"));
+                return;
+            }
+            try {
+                JSONObject json = new JSONObject(body);
+                Bundle bundle = new Bundle();
+                bundle.putString("fullName", json.getString("displayName"));
+                bundle.putString("email", json.getString("email"));
+                bundleCallback.onResponse(bundle);
+            } catch (JSONException e) {
+                error.onError(new NetworkError(100171, 403, "Cannot parse WB profile!"));
+            }
+        }, err -> error.onError(new NetworkError(100170, err.networkResponse.statusCode, "Testing WB login failed!")));
+    }
+
+    @Override
+    public void createLoginToken(@NotNull String username, @NotNull String password, @NotNull NetworkCallback<LoginTokenWB> callback, @NotNull NetworkErrorCallback error) {
+        getSAMLLocation(samlLocation -> {
+            fuLogin.fulogin(samlLocation, username, password, samlResponse -> {
+                startShibSession(samlResponse, shibSessionKey -> {
+                    String shibsessionKey = shibSessionKey.getString("shibsessionKey");
+                    String shibsessionName = shibSessionKey.getString("shibsessionName");
+                    startSession(shibsessionKey, shibsessionName, sessionCookies -> {
+                        Bundle bundle = new Bundle();
+                        bundle.putString("username", username);
+                        bundle.putAll(sessionCookies);
+                        LoginTokenWB tokenWB = new LoginTokenWB(bundle);
+                        testToken(tokenWB, callback, error);
+                    }, error);
+                }, error);
+            }, error);
+        }, error);
+    }
+
+
+
+    /*
+     1= GET https://mycampus.imp.fu-berlin.de/Shibboleth.sso/Login?entityID=https://identity.fu-berlin.de/idp-fub
+        -> Location-Header: https://identity.fu-berlin.de/idp-fub/profile/SAML2/Redirect/SSO?SAMLResponse=[SAMLResponse]&RelayState=[RelayState]
+     */
+    private void getSAMLLocation(final NetworkCallback<String> callback, final NetworkErrorCallback errorCallback) {
+        get(WB_SERVER_URL + "Shibboleth.sso/Login?entityID=https://identity.fu-berlin.de/idp-fub", null, response -> {
+            String location = response.getHeaders().get("Location");
+            if (location == null) {
+                errorCallback.onError(new NetworkError(100111, -1, "Error on getting WB SAML request!"));
+                return;
+            }
+            callback.onResponse(location);
+        }, error -> errorCallback.onError(new NetworkError(100110, error.networkResponse.statusCode, "Error on getting WB SAML request!")));
+    }
+
+    /*
+     5= POST https://mycampus.imp.fu-berlin.de/Shibboleth.sso/SAML2/POST
+        + Body: SAMLResponse=[SAML-RESPONSE]
+        + Header: Content-Type: application/x-www-form-urlencoded
+        -> Set-Cookie: _shibsession_[SESS-NR]: [SESS-VALUE]
+    */
+    private void startShibSession(String samlResponse, final NetworkCallback<Bundle> callback, final NetworkErrorCallback errorCallback) {
+        HashMap<String, String> body = new HashMap<>();
+        body.put("SAMLResponse", samlResponse);
+        post(WB_SERVER_URL + "Shibboleth.sso/SAML2/POST", null, body, response -> {
+            String cookies = response.getHeaders().get("Set-Cookie");
+            if (cookies ==null) {
+                errorCallback.onError(new NetworkError(100151, -1, "Error on starting WB session!"));
+                return;
+            }
+
+
+            Pattern pattern = Pattern.compile("(_shibsession_[0-9a-f]+)=([^;]+);");
+            Matcher matcher = pattern.matcher(cookies);
+            if (!matcher.find()) {
+                errorCallback.onError(new NetworkError(100152, -1, "Error on starting WB session!"));
+            }
+
+            Bundle bundle = new Bundle();
+            bundle.putString("shibsessionKey", matcher.group(1));
+            bundle.putString("shibsessionName", matcher.group(2));
+
+            callback.onResponse(bundle);
+        }, error -> errorCallback.onError(new NetworkError(100150, error.networkResponse.statusCode, "Error on starting WB session!")));
+    }
+
+
+    /*
+     6= https://mycampus.imp.fu-berlin.de/sakai-login-tool/container
+        + Cookie: _shibsession_[SESS-NR]: [SESS-VALUE]
+        -> Set-Cookie: JSESSIONID: [JSESSION-KVV]
+	*/
+    private void startSession(String shibsessionKey, String shibsessionName, final NetworkCallback<Bundle> callback, final NetworkErrorCallback errorCallback) {
+        HashMap<String, String> cookies = new HashMap<>();
+        cookies.put(shibsessionKey, shibsessionName);
+        get(WB_SERVER_URL + "sakai-login-tool/container", cookies, response -> {
+            String cookies1 = response.getHeaders().get("Set-Cookie");
+            if (cookies1 ==null) {
+                errorCallback.onError(new NetworkError(100161, -1, "Cannot finish WB login process!"));
+                return;
+            }
+            try {
+                Bundle bundle = getCookie(cookies1, new String[]{"JSESSIONID"});
+                callback.onResponse(bundle);
+            } catch (NoSuchFieldException e) {
+                errorCallback.onError(new NetworkError(100162, -1, "Cannot finish WB login process!"));
+            }
+        }, error -> errorCallback.onError(new NetworkError(100160, error.networkResponse.statusCode, "Cannot finish WB login process!")));
+    }
+}

app/src/main/java/de/sebse/fuplanner/services/kvv/types/CacheBBCourse.java

@@ -82,8 +82,8 @@ public class CacheBBCourse implements Serializable {
         return mKVVCourseList.contains(courseID);
     }
 
-    public void setBBCourse(String courseID, Modules.Module lecturer) {
-        mBBCourseList.put(courseID, lecturer);
+    public void setBBCourse(String courseID, Modules.Module module) {
+        mBBCourseList.put(courseID, module);
         mBBCourseListRefresh.put(courseID, System.currentTimeMillis());
     }
 

app/src/main/java/de/sebse/fuplanner/services/kvv/types/CacheKVVCourse.java

@@ -68,8 +68,8 @@ public class CacheKVVCourse implements Serializable {
         fos.close();
     }
 
-    public void setKVVCourse(String courseID, Modules.Module lecturer) {
-        mKVVCourseList.put(courseID, lecturer);
+    public void setKVVCourse(String courseID, Modules.Module module) {
+        mKVVCourseList.put(courseID, module);
         mKVVCourseListRefresh.put(courseID, System.currentTimeMillis());
     }
 

app/src/main/java/de/sebse/fuplanner/services/kvv/types/LoginToken.java

@@ -0,0 +1,123 @@
+package de.sebse.fuplanner.services.kvv.types;
+
+import android.os.Bundle;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.HashMap;
+import java.util.Objects;
+
+import de.sebse.fuplanner.services.fulogin.AccountGeneral;
+import de.sebse.fuplanner.tools.CustomAccountManager;
+
+public abstract class LoginToken {
+    private boolean isExpanded = false;
+    private boolean isAvailable = false;
+
+    LoginToken(@NotNull CustomAccountManager manager, @NotNull LoginTokenInterface callback, @NotNull CustomAccountManager.ExceptionInterface errorCallback) {
+        if (!manager.hasAccounts(AccountGeneral.ACCOUNT_TYPE)) {
+            callback.run(null);
+            return;
+        }
+        manager.getTokenByType(AccountGeneral.ACCOUNT_TYPE, AccountGeneral.AUTHTOKEN_TYPE_BLACKBOARD, tokenString -> {
+            if (tokenString == null) {
+                callback.run(null);
+                return;
+            }
+            fromString(tokenString);
+            callback.run(this);
+        }, errorCallback);
+    }
+
+    LoginToken() {
+        super();
+    }
+
+    LoginToken(Bundle bundle) {
+        super();
+        init(bundle);
+    }
+
+    protected abstract String getAccountType();
+
+    protected void init(Bundle bundle) {
+        isAvailable = true;
+    }
+
+    public void setAdditionals(Bundle bundle) {
+        isExpanded = true;
+        isAvailable = true;
+    }
+
+    public final boolean hasAdditionals() {
+        return isExpanded;
+    }
+
+    public void setUnavailable() {
+        isExpanded = false;
+        isAvailable = false;
+    }
+
+    public final void unsetAdditionals() {
+        isExpanded = false;
+    }
+
+    public final void fromString(String jsonString) {
+        try {
+            JSONObject json = new JSONObject(jsonString);
+            this.isAvailable = json.getBoolean("isAvailable");
+            this.isExpanded = json.getBoolean("isExpanded");
+            jsonToObject(json);
+        } catch (JSONException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @NotNull
+    public final String toString() {
+        JSONObject json = null;
+        try {
+            json = objectToJson();
+            json.put("isAvailable", isAvailable);
+            json.put("isExpanded", isExpanded);
+        } catch (JSONException e) {
+            e.printStackTrace();
+        }
+        if (json != null) {
+            return json.toString();
+        }
+        return "";
+    }
+
+    protected abstract void jsonToObject(JSONObject json) throws JSONException;
+
+    protected abstract JSONObject objectToJson() throws JSONException;
+
+    public abstract HashMap<String, String> getCookies();
+
+    public final String getCookieString() {
+        StringBuilder result = new StringBuilder();
+        HashMap<String, String> cookies = this.getCookies();
+        for (String header: cookies.keySet()) {
+            result.append(header).append("=").append(cookies.get(header)).append(";");
+        }
+        return result.substring(0, result.length()-1);
+    }
+
+    public final boolean isExpanded() {
+        return isExpanded;
+    }
+
+    public final boolean isAvailable() {
+        return isAvailable;
+    }
+
+    public interface LoginTokenInterface {
+        void run(LoginToken token);
+    }
+
+    public abstract boolean isOtherUser(String user);
+}

app/src/main/java/de/sebse/fuplanner/services/kvv/types/LoginTokenBB.java

@@ -1,7 +1,10 @@
 package de.sebse.fuplanner.services.kvv.types;
 
+import android.os.Bundle;
+
 import com.google.android.gms.common.internal.Objects;
 
+import org.jetbrains.annotations.NotNull;
 import org.json.JSONException;
 import org.json.JSONObject;
 
@@ -16,66 +19,59 @@ import de.sebse.fuplanner.tools.CustomAccountManager;
  * Created by sebastian on 29.10.17.
  */
 
-public class LoginTokenBB {
-    private final String s_session_id;
-    private final String session_id;
-    private final String username;
-    private boolean isAvailable = true;
+public class LoginTokenBB extends LoginToken {
+    private String s_session_id;
+    private String session_id;
+    private String username;
     @Nullable private String id;
     @Nullable private String studentId;
 
-    public LoginTokenBB(String username, String s_session_id, String session_id) {
-        this.username = username;
-        this.s_session_id = s_session_id;
-        this.session_id = session_id;
+    public LoginTokenBB() {
+        super();
     }
 
-    public static void load(CustomAccountManager manager, LoginTokenInterface callback, CustomAccountManager.ExceptionInterface errorCallback) {
-        if (!manager.hasAccounts(AccountGeneral.ACCOUNT_TYPE)) {
-            callback.run(null);
-            return;
-        }
-        manager.getTokenByType(AccountGeneral.ACCOUNT_TYPE, AccountGeneral.AUTHTOKEN_TYPE_BLACKBOARD, tokenString -> {
-            if (tokenString == null) {
-                callback.run(null);
-                return;
-            }
-            callback.run(LoginTokenBB.fromJsonString(tokenString));
-        }, errorCallback);
+    public LoginTokenBB(Bundle bundle) {
+        super(bundle);
     }
 
-    public static boolean hasAccounts(CustomAccountManager manager) {
-        return manager.hasAccounts(AccountGeneral.ACCOUNT_TYPE);
+    @Override
+    protected void init(Bundle bundle) {
+        super.init(bundle);
+        this.username = bundle.getString("username");
+        this.s_session_id = bundle.getString("s_session_id");
+        this.session_id = bundle.getString("session_id");
     }
 
-    public void delete(CustomAccountManager manager) {
-        manager.deleteAccount(AccountGeneral.ACCOUNT_TYPE);
+    @Override
+    protected String getAccountType() {
+        return AccountGeneral.AUTHTOKEN_TYPE_BLACKBOARD;
     }
 
-    public void setAdditionals(String id, String studentId) {
-        this.id = id;
-        this.studentId = studentId;
-        this.isAvailable = true;
+    @Override
+    public void setAdditionals(Bundle bundle) {
+        super.setAdditionals(bundle);
+        this.id = bundle.getString("id");
+        this.studentId = bundle.getString("studentId");
     }
 
-    public void setNotAvailable() {
+    @Override
+    public void setUnavailable() {
+        super.setUnavailable();
         this.id = null;
         this.studentId = null;
-        this.isAvailable = false;
-    }
-
-    public boolean isAvailable() {
-        return isAvailable;
     }
 
+    @NotNull
     public String getUsername() {
         return username;
     }
 
-    private String getSessionId() {
+    @NotNull
+    public String getSessionId() {
         return session_id;
     }
 
+    @NotNull
     public String getSSessionId() {
         return s_session_id;
     }
@@ -90,6 +86,7 @@ public class LoginTokenBB {
         return studentId;
     }
 
+    @Override
     public HashMap<String, String> getCookies() {
         HashMap<String, String> cookies = new HashMap<>();
         cookies.put("session_id", getSessionId());
@@ -97,55 +94,40 @@ public class LoginTokenBB {
         return cookies;
     }
 
+    @Override
     public boolean isOtherUser(String username) {
         return !this.getUsername().equals(username);
     }
 
-    @NonNull
     @Override
-    public String toString() {
-        StringBuilder result = new StringBuilder();
-        HashMap<String, String> cookies = this.getCookies();
-        for (String header: cookies.keySet()) {
-            result.append(header).append("=").append(cookies.get(header)).append(";");
-        }
-        return result.substring(0, result.length()-1);
-    }
-
-    public String toJsonString() {
+    protected JSONObject objectToJson() throws JSONException {
         JSONObject json = new JSONObject();
-        try {
+        if (isAvailable()) {
             json.put("s_session_id", s_session_id);
             json.put("session_id", session_id);
             json.put("username", username);
+        }
+        if (isExpanded()) {
             json.put("id", id);
             json.put("studentId", studentId);
-            json.put("isAvailable", isAvailable);
-        } catch (JSONException e) {
-            return null;
         }
-        return json.toString();
+        return json;
     }
 
-    private static LoginTokenBB fromJsonString(String tokenString) {
-        try {
-            JSONObject json = new JSONObject(tokenString);
-            LoginTokenBB token = new LoginTokenBB(
-                    json.getString("username"),
-                    json.getString("s_session_id"),
-                    json.getString("session_id"));
-            if (!json.isNull("id"))
-                token.setAdditionals(
-                        json.getString("id"),
-                        json.getString("studentId")
-                );
-            if (!json.optBoolean("isAvailable", true)) {
-                token.setNotAvailable();
+    @Override
+    protected void jsonToObject(JSONObject json) throws JSONException {
+        if (isAvailable()) {
+            Bundle bundle = new Bundle();
+            bundle.putString("username", json.getString("username"));
+            bundle.putString("s_session_id", json.getString("s_session_id"));
+            bundle.putString("session_id", json.getString("session_id"));
+            init(bundle);
         }
-            return token;
-        } catch (JSONException e) {
-            e.printStackTrace();
-            return null;
+        if (isExpanded()) {
+            Bundle bundle = new Bundle();
+            bundle.putString("id", json.getString("id"));
+            bundle.putString("studentId", json.getString("studentId"));
+            setAdditionals(bundle);
         }
     }
 
@@ -153,8 +135,4 @@ public class LoginTokenBB {
     public int hashCode() {
         return Objects.hashCode(s_session_id, session_id, username, id, studentId);
     }
-
-    public interface LoginTokenInterface {
-        void run(LoginTokenBB token);
-    }
 }

app/src/main/java/de/sebse/fuplanner/services/kvv/types/LoginTokenKVV.java

@@ -1,152 +0,0 @@
-package de.sebse.fuplanner.services.kvv.types;
-
-import com.google.android.gms.common.internal.Objects;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-import java.util.HashMap;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import de.sebse.fuplanner.services.fulogin.AccountGeneral;
-import de.sebse.fuplanner.tools.CustomAccountManager;
-
-/**
- * Created by sebastian on 29.10.17.
- */
-
-public class LoginTokenKVV {
-    private final String username;
-    private final String JSESSIONID;
-    private boolean isAvailable = true;
-    @Nullable private String fullName;
-    @Nullable private String email;
-
-    public LoginTokenKVV(String username, String JSESSIONID) {
-        this.username = username;
-        this.JSESSIONID = JSESSIONID;
-    }
-
-    public static void load(CustomAccountManager manager, LoginTokenInterface callback, CustomAccountManager.ExceptionInterface errorCallback) {
-        if (!manager.hasAccounts(AccountGeneral.ACCOUNT_TYPE)) {
-            callback.run(null);
-            return;
-        }
-        manager.getTokenByType(AccountGeneral.ACCOUNT_TYPE, AccountGeneral.AUTHTOKEN_TYPE_KVV, tokenString -> {
-            if (tokenString == null) {
-                callback.run(null);
-                return;
-            }
-            callback.run(LoginTokenKVV.fromJsonString(tokenString));
-        }, errorCallback);
-    }
-
-    public static boolean hasAccounts(CustomAccountManager manager) {
-        return manager.hasAccounts(AccountGeneral.ACCOUNT_TYPE);
-    }
-
-    public void delete(CustomAccountManager manager) {
-        manager.deleteAccount(AccountGeneral.ACCOUNT_TYPE);
-    }
-
-    public void setAdditionals(String fullName, String email) {
-        this.fullName = fullName;
-        this.email = email;
-        this.isAvailable = true;
-    }
-
-    public void setNotAvailable() {
-        this.fullName = null;
-        this.email = null;
-        this.isAvailable = false;
-    }
-
-    public boolean isAvailable() {
-        return isAvailable;
-    }
-
-    public String getUsername() {
-        return username;
-    }
-
-    private String getJSESSIONID() {
-        return JSESSIONID;
-    }
-
-    @Nullable
-    public String getFullName() {
-        return fullName;
-    }
-
-    @Nullable
-    public String getEmail() {
-        return email;
-    }
-
-    public HashMap<String, String> getCookies() {
-        HashMap<String, String> cookies = new HashMap<>();
-        cookies.put("JSESSIONID", getJSESSIONID());
-        cookies.put("pasystem_timezone_ok", "true");
-        return cookies;
-    }
-
-    public boolean isOtherUser(String username) {
-        return !this.getUsername().equals(username);
-    }
-
-    @NonNull
-    @Override
-    public String toString() {
-        StringBuilder result = new StringBuilder();
-        HashMap<String, String> cookies = this.getCookies();
-        for (String header: cookies.keySet()) {
-            result.append(header).append("=").append(cookies.get(header)).append(";");
-        }
-        return result.substring(0, result.length()-1);
-    }
-
-    public String toJsonString() {
-        JSONObject json = new JSONObject();
-        try {
-            json.put("username", username);
-            json.put("JSESSIONID", JSESSIONID);
-            json.put("fullName", fullName);
-            json.put("email", email);
-            json.put("isAvailable", isAvailable);
-        } catch (JSONException e) {
-            return null;
-        }
-        return json.toString();
-    }
-
-    private static LoginTokenKVV fromJsonString(String tokenString) {
-        try {
-            JSONObject json = new JSONObject(tokenString);
-            LoginTokenKVV token = new LoginTokenKVV(
-                    json.getString("username"),
-                    json.getString("JSESSIONID"));
-            if (!json.isNull("fullName"))
-                token.setAdditionals(
-                        json.getString("fullName"),
-                        json.getString("email")
-                );
-            if (!json.optBoolean("isAvailable", true)) {
-                token.setNotAvailable();
-            }
-            return token;
-        } catch (JSONException e) {
-            e.printStackTrace();
-            return null;
-        }
-    }
-
-    @Override
-    public int hashCode() {
-        return Objects.hashCode(username, JSESSIONID, fullName, email);
-    }
-
-    public interface LoginTokenInterface {
-        void run(LoginTokenKVV token);
-    }
-}

app/src/main/java/de/sebse/fuplanner/services/kvv/types/LoginTokenWB.java

@@ -0,0 +1,126 @@
+package de.sebse.fuplanner.services.kvv.types;
+
+import android.os.Bundle;
+
+import com.google.android.gms.common.internal.Objects;
+
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import java.util.HashMap;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import de.sebse.fuplanner.services.fulogin.AccountGeneral;
+import de.sebse.fuplanner.tools.CustomAccountManager;
+
+/**
+ * Created by sebastian on 29.10.17.
+ */
+
+public class LoginTokenWB extends LoginToken {
+    private String username;
+    private String JSESSIONID;
+    @Nullable private String fullName;
+    @Nullable private String email;
+
+    public LoginTokenWB() {
+        super();
+    }
+
+    public LoginTokenWB(Bundle bundle) {
+        super(bundle);
+    }
+
+    @Override
+    protected void init(Bundle bundle) {
+        super.init(bundle);
+        this.username = bundle.getString("username");
+        this.JSESSIONID = bundle.getString("JSESSIONID");
+    }
+
+    @Override
+    protected String getAccountType() {
+        return AccountGeneral.AUTHTOKEN_TYPE_WB;
+    }
+
+    @Override
+    public void setAdditionals(Bundle bundle) {
+        super.setAdditionals(bundle);
+        this.fullName = bundle.getString("fullName");
+        this.email = bundle.getString("email");
+    }
+
+    @Override
+    public void setUnavailable() {
+        super.setUnavailable();
+        this.fullName = null;
+        this.email = null;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    private String getJSESSIONID() {
+        return JSESSIONID;
+    }
+
+    @Nullable
+    public String getFullName() {
+        return fullName;
+    }
+
+    @Nullable
+    public String getEmail() {
+        return email;
+    }
+
+    @Override
+    public HashMap<String, String> getCookies() {
+        HashMap<String, String> cookies = new HashMap<>();
+        cookies.put("JSESSIONID", getJSESSIONID());
+        cookies.put("pasystem_timezone_ok", "true");
+        return cookies;
+    }
+
+    @Override
+    public boolean isOtherUser(String username) {
+        return !this.getUsername().equals(username);
+    }
+
+    @Override
+    protected JSONObject objectToJson() throws JSONException {
+        JSONObject json = new JSONObject();
+        if (isAvailable()) {
+            json.put("username", username);
+            json.put("JSESSIONID", JSESSIONID);
+        }
+        if (isExpanded()) {
+            json.put("fullName", fullName);
+            json.put("email", email);
+        }
+        return json;
+    }
+
+    @Override
+    protected void jsonToObject(JSONObject json) throws JSONException {
+        if (isAvailable()) {
+            Bundle bundle = new Bundle();
+            bundle.putString("username", json.getString("username"));
+            bundle.putString("JSESSIONID", json.getString("JSESSIONID"));
+            init(bundle);
+        }
+        if (isExpanded()) {
+            Bundle bundle = new Bundle();
+            bundle.putString("fullName", json.getString("fullName"));
+            bundle.putString("email", json.getString("email"));
+            setAdditionals(bundle);
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(username, JSESSIONID, fullName, email);
+    }
+}

app/src/main/java/de/sebse/fuplanner/services/kvv/types/Semester.java

@@ -2,6 +2,7 @@ package de.sebse.fuplanner.services.kvv.types;
 
 import java.io.Serializable;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import de.sebse.fuplanner.tools.Regex;
 
@@ -52,4 +53,10 @@ public class Semester implements Serializable {
         }
         return false;
     }
+
+    @NonNull
+    @Override
+    public String toString() {
+        return (type == SEM_SS ? "SS" : "WS") + year;
+    }
 }

app/src/main/java/de/sebse/fuplanner/services/kvv/ui/Download.java

@@ -2,11 +2,13 @@ package de.sebse.fuplanner.services.kvv.ui;
 
 import android.Manifest;
 import android.app.AlertDialog;
+import android.content.ActivityNotFoundException;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.res.Resources;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Environment;
 
 import java.io.File;
@@ -47,8 +49,14 @@ public class Download {
         if (context == null)
             return;
         AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(context);
-        File f = new File(Environment.getExternalStoragePublicDirectory(
-                Environment.DIRECTORY_DOWNLOADS)+"/"+folderName+"/"+file.getTitle());
+        File f;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+            f = new File(context.getExternalFilesDir(
+                    Environment.DIRECTORY_DOWNLOADS) + "/" + folderName + "/" + file.getTitle());
+        } else {
+            f = new File(Environment.getExternalStoragePublicDirectory(
+                    Environment.DIRECTORY_DOWNLOADS) + "/" + folderName + "/" + file.getTitle());
+        }
         Resources resources = context.getResources();
         String message = "";
         if (file.getAuthor() != null && !file.getAuthor().isEmpty())
@@ -236,7 +244,12 @@ public class Download {
             intent.setDataAndType(uri, "*/*");
         }
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        try {
             context.startActivity(intent);
+        } catch (ActivityNotFoundException e) {
+            log.e("No matching activity found!");
+            e.printStackTrace();
+        }
 
     }
 

app/src/main/java/de/sebse/fuplanner/tools/MainActivityListener.java

@@ -24,4 +24,6 @@ public interface MainActivityListener {
     void addRequestPermissionsResultListener(RequestPermissionsResultListener listener, String id);
 
     void removeRequestPermissionsResultListener(String id);
+
+    void forceSync();
 }

app/src/main/res/values-de/strings.xml

@@ -31,7 +31,7 @@
     <string name="current_percentage">Punkte: %1$.1f / %2$.1f\nProzentsatz: %3$.1f \%%\nBeste Note: %4$.1f / %5$.1f - %6$.1f \%% (%7$s)</string>
     <string name="offline_mode">Offline-Modus</string>
     <string name="refresh_failed">Aktualisieren fehlgeschlagen…</string>
-    <string name="share_intent">Hey, schau\' dir die neue KVV App an: %1$s</string>
+    <string name="share_intent">Hey, schau dir die neue App für Whiteboard und Blackboard an der FU an: %1$s</string>
     <string name="refresh">"Aktualisieren"</string>
     <string name="go_to_today">Heute</string>
     <string name="canteens">Kantinen</string>
@@ -52,6 +52,8 @@
     <string name="pref_sync_frequency_title">Synchronisationshäufigkeit</string>
     <string name="pref_sync_frequency_summary">Stellt Häufigkeit der automatischen Synchronisation ein</string>
     <string name="pref_sync_frequency_dialog">Sync-Frequenz</string>
+    <string name="pref_add_calendar_title">Zum Kalender hinzufügen</string>
+    <string name="pref_add_calendar_summary">Wenn ausgewählt, wird </string>
     <string name="meals">Hauptgerichte</string>
     <string name="special_meals">Spezial Gerichte</string>
     <string name="side_dishes">Beilagen</string>

app/src/main/res/values/arrays.xml

@@ -1,54 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <string-array name="pref_price_group_entries">
-        <item>All</item>
-        <item>Student</item>
-        <item>Employee</item>
-        <item>Other</item>
-    </string-array>
-    <string-array name="pref_price_group_values" translatable="false">
-        <item>all</item>
-        <item>student</item>
-        <item>employee</item>
-        <item>other</item>
-    </string-array>
-
-    <string-array name="pref_sync_frequency_entries">
-        <item>Every hour</item>
-        <item>Every 2 hours</item>
-        <item>Every 4 hours</item>
-        <item>Every 6 hours</item>
-        <item>Every 12 hours</item>
-        <item>Every 24 hours</item>
-    </string-array>
-    <string-array name="pref_sync_frequency_values" translatable="false">
-        <item>1</item>
-        <item>2</item>
-        <item>4</item>
-        <item>6</item>
-        <item>12</item>
-        <item>24</item>
-    </string-array>
-
-    <string-array name="pref_food_level_entries">
-        <item>Show every meal</item>
-        <item>Show only vegetarian meals</item>
-        <item>Show only vegan meals</item>
-    </string-array>
-    <string-array name="pref_food_level_values" translatable="false">
-        <item>all</item>
-        <item>vegetarian</item>
-        <item>vegan</item>
-    </string-array>
-
-    <string-array name="pref_night_mode_entries">
-        <item>Follow system default</item>
-        <item>Always day mode</item>
-        <item>Always night mode</item>
-    </string-array>
-    <string-array name="pref_night_mode_values" translatable="false">
-        <item>auto</item>
-        <item>day</item>
-        <item>night</item>
-    </string-array>
-</resources>

app/src/main/res/values/preferences.xml

@@ -1,6 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <!-- Select an item -->
+    <string-array name="pref_price_group_entries">
+        <item>All</item>
+        <item>Student</item>
+        <item>Employee</item>
+        <item>Other</item>
+    </string-array>
+    <string-array name="pref_price_group_values" translatable="false">
+        <item>all</item>
+        <item>student</item>
+        <item>employee</item>
+        <item>other</item>
+    </string-array>
     <string-array name="pref_price_group" translatable="false">
         <item>@string/pref_price_group</item>
         <item>@string/pref_price_group_default</item>
@@ -8,6 +20,22 @@
     <string name="pref_price_group" translatable="false">pref_price_group</string>
     <string name="pref_price_group_default" translatable="false">all</string>
 
+    <string-array name="pref_sync_frequency_entries">
+        <item>Every hour</item>
+        <item>Every 2 hours</item>
+        <item>Every 4 hours</item>
+        <item>Every 6 hours</item>
+        <item>Every 12 hours</item>
+        <item>Every 24 hours</item>
+    </string-array>
+    <string-array name="pref_sync_frequency_values" translatable="false">
+        <item>1</item>
+        <item>2</item>
+        <item>4</item>
+        <item>6</item>
+        <item>12</item>
+        <item>24</item>
+    </string-array>
     <string-array name="pref_sync_frequency" translatable="false">
         <item>@string/pref_sync_frequency</item>
         <item>@string/pref_sync_frequency_default</item>
@@ -15,6 +43,16 @@
     <string name="pref_sync_frequency" translatable="false">pref_sync_frequency</string>
     <string name="pref_sync_frequency_default" translatable="false">6</string>
 
+    <string-array name="pref_food_level_entries">
+        <item>Show every meal</item>
+        <item>Show only vegetarian meals</item>
+        <item>Show only vegan meals</item>
+    </string-array>
+    <string-array name="pref_food_level_values" translatable="false">
+        <item>all</item>
+        <item>vegetarian</item>
+        <item>vegan</item>
+    </string-array>
     <string-array name="pref_food_level" translatable="false">
         <item>@string/pref_food_level</item>
         <item>@string/pref_food_level_default</item>
@@ -22,6 +60,16 @@
     <string name="pref_food_level" translatable="false">pref_food_level</string>
     <string name="pref_food_level_default" translatable="false">all</string>
 
+    <string-array name="pref_night_mode_entries">
+        <item>Follow system default</item>
+        <item>Always day mode</item>
+        <item>Always night mode</item>
+    </string-array>
+    <string-array name="pref_night_mode_values" translatable="false">
+        <item>auto</item>
+        <item>day</item>
+        <item>night</item>
+    </string-array>
     <string-array name="pref_night_mode" translatable="false">
         <item>@string/pref_night_mode</item>
         <item>@string/pref_night_mode_default</item>
@@ -29,6 +77,9 @@
     <string name="pref_night_mode" translatable="false">pref_night_mode</string>
     <string name="pref_night_mode_default" translatable="false">auto</string>
 
+    <string name="pref_add_calendar" translatable="false">pref_add_calendar</string>
+    <string name="pref_add_calendar_default" translatable="false">false</string>
+
     <!-- Other preferences -->
 
     <string name="pref_last_visited_news" translatable="false">pref_last_visited_news</string>

app/src/main/res/values/strings.xml

@@ -11,7 +11,7 @@
     <string name="schedule">Schedule</string>
     <string name="courses">Courses</string>
     <string name="canteen_plan">Canteen Plan</string>
-    <string name="settings">Settings</string>
+    <string name="settings">Preferences</string>
     <string name="options">Options</string>
     <string name="log_out">Log out</string>
     <string name="share">Share</string>
@@ -33,7 +33,7 @@
     <string name="current_percentage">Points: %1$.1f / %2$.1f\nPercentage: %3$.1f \%%\nBest Grade: %4$.1f / %5$.1f - %6$.1f \%% (%7$s)</string>
     <string name="offline_mode">Offline Mode</string>
     <string name="refresh_failed">Refresh failed…</string>
-    <string name="share_intent">Hey, check out the new KVV app: %1$s</string>
+    <string name="share_intent">Hey, check out the new Whiteboard and Blackboard app: %1$s</string>
     <string name="app_url" translatable="false">https://play.google.com/store/apps/details?id=de.sebse.fuplanner</string>
     <string name="refresh">Refresh</string>
     <string name="go_to_today">Go to today</string>
@@ -59,6 +59,8 @@
     <string name="pref_sync_frequency_title">Sync frequency</string>
     <string name="pref_sync_frequency_summary">Set automatic background sync frequency</string>
     <string name="pref_sync_frequency_dialog">Frequency Selection</string>
+    <string name="pref_add_calendar_title">Add to Calendar</string>
+    <string name="pref_add_calendar_summary">If checked schedule will be added to your calendar app</string>
     <string name="meals">Meals</string>
     <string name="special_meals">Special meals</string>
     <string name="side_dishes">Side Dishes</string>

app/src/main/res/xml/preferences.xml

@@ -33,6 +33,11 @@
         android:entries="@array/pref_sync_frequency_entries"
         android:entryValues="@array/pref_sync_frequency_values"
         android:dialogTitle="@string/pref_sync_frequency_dialog" />
+    <CheckBoxPreference
+        android:key="@string/pref_add_calendar"
+        android:defaultValue="@string/pref_add_calendar_default"
+        android:title="@string/pref_add_calendar_title"
+        android:summary="@string/pref_add_calendar_summary" />
     <PreferenceScreen
         android:title="@string/open_data_policy"
         android:summary="@string/open_data_policy_summary">