Add services (#21)

.gitignore

@@ -22,6 +22,7 @@ local.properties
 # User-specific configurations
 .idea/copyright/profiles_settings.xml
 .idea/libraries/
+.idea/inspectionProfiles/
 .idea/.name
 .idea/compiler.xml
 .idea/encodings.xml

app/build.gradle

@@ -42,6 +42,7 @@ dependencies {
     compile 'com.thoughtbot:expandablerecyclerview:1.3'
     compile 'com.android.support:cardview-v7:25.3.1'
     compile 'com.google.code.gson:gson:2.8.1'
+    compile 'com.firebase:firebase-jobdispatcher:0.8.1'
 
     testCompile 'junit:junit:4.12'
     testCompile 'org.mockito:mockito-core:2.9.0'

app/src/main/AndroidManifest.xml

@@ -5,12 +5,13 @@
     android:installLocation="internalOnly">
 
     <uses-permission android:name="android.permission.INTERNET" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
 
-    <uses-sdk tools:overrideLibrary="com.thoughtbot.expandablerecyclerview, com.thoughtbot.expandablecheckrecyclerview" />
+    <uses-sdk tools:overrideLibrary="com.thoughtbot.expandablerecyclerview" />
 
     <application
-        android:allowBackup="true"
+        android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
@@ -18,9 +19,9 @@
         android:theme="@style/WulkanowyTheme">
         <activity
             android:name=".activity.started.StartedActivity"
+            android:configChanges="orientation|screenSize"
             android:noHistory="true"
-            android:theme="@style/WulkanowyTheme.noActionBar"
+            android:theme="@style/WulkanowyTheme.noActionBar">
-            android:configChanges="orientation|screenSize">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -29,13 +30,21 @@
         </activity>
         <activity
             android:name=".activity.main.MainActivity"
-            android:label="@string/login_text"
             android:configChanges="orientation|screenSize"
+            android:label="@string/login_text"
             android:windowSoftInputMode="adjustResize" />
         <activity
             android:name=".activity.dashboard.DashboardActivity"
-            android:label="@string/activity_dashboard_text"
+            android:configChanges="orientation|screenSize"
-            android:configChanges="orientation|screenSize"/>
+            android:label="@string/activity_dashboard_text" />
+
+        <service
+            android:name=".services.jobs.GradesSync$GradeJob"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.firebase.jobdispatcher.ACTION_EXECUTE" />
+            </intent-filter>
+        </service>
     </application>
 
 </manifest>

app/src/main/java/io/github/wulkanowy/activity/dashboard/DashboardActivity.java

@@ -16,8 +16,11 @@ import io.github.wulkanowy.activity.dashboard.lessonplan.LessonPlanFragment;
 public class DashboardActivity extends AppCompatActivity {
 
     private GradesFragment gradesFragment = new GradesFragment();
+
     private AttendanceFragment attendanceFragment = new AttendanceFragment();
+
     private BoardFragment boardFragment = new BoardFragment();
+
     private LessonPlanFragment lessonPlanFragment = new LessonPlanFragment();
 
     private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener

app/src/main/java/io/github/wulkanowy/activity/dashboard/grades/GradesFragment.java

@@ -10,23 +10,11 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
-import java.util.Map;
 
 import io.github.wulkanowy.R;
-import io.github.wulkanowy.api.Cookies;
-import io.github.wulkanowy.api.StudentAndParent;
-import io.github.wulkanowy.api.grades.GradesList;
 import io.github.wulkanowy.api.grades.Subject;
-import io.github.wulkanowy.api.grades.SubjectsList;
-import io.github.wulkanowy.database.accounts.Account;
-import io.github.wulkanowy.database.accounts.AccountsDatabase;
-import io.github.wulkanowy.database.cookies.CookiesDatabase;
 import io.github.wulkanowy.database.grades.GradesDatabase;
 import io.github.wulkanowy.database.subjects.SubjectsDatabase;
 
@@ -63,54 +51,23 @@ public class GradesFragment extends Fragment {
 
     public class MarksTask extends AsyncTask<Void, Void, Void> {
 
-        private Context mContext;
+        private Context context;
-        
-        private Map<String, String> loginCookies = new HashMap<>();
 
         MarksTask(Context context) {
-            mContext = context;
+            this.context = context;
         }
 
         @Override
         protected Void doInBackground(Void... params) {
-            long userId = mContext.getSharedPreferences("LoginData", Context.MODE_PRIVATE).getLong("isLogin", 0);
 
-            try {
+            SubjectsDatabase subjectsDatabase = new SubjectsDatabase(context);
-                Gson gson = new GsonBuilder().enableComplexMapKeySerialization()
+            GradesDatabase gradesDatabase = new GradesDatabase(context);
-                        .setPrettyPrinting().create();
-                CookiesDatabase cookiesDatabase = new CookiesDatabase(mContext);
-                cookiesDatabase.open();
-                loginCookies = gson.fromJson(cookiesDatabase.getCookies(), loginCookies.getClass());
-                cookiesDatabase.close();
-            } catch (Exception e) {
-                e.printStackTrace();
-            }
 
-            try {
-                Cookies cookies = new Cookies();
-                cookies.setItems(loginCookies);
-
-                AccountsDatabase accountsDatabase = new AccountsDatabase(mContext);
-                accountsDatabase.open();
-                Account account = accountsDatabase.getAccount(userId);
-                accountsDatabase.close();
-
-                StudentAndParent snp = new StudentAndParent(cookies, account.getSymbol());
-                SubjectsList subjectsList = new SubjectsList(snp);
-
-                SubjectsDatabase subjectsDatabase = new SubjectsDatabase(mContext);
-                subjectsDatabase.open();
-                subjectsDatabase.put(subjectsList.getAll());
-                subjectsDatabase.close();
-
-
-                GradesList gradesList = new GradesList(snp);
-                GradesDatabase gradesDatabase = new GradesDatabase(mContext);
             gradesDatabase.open();
-                gradesDatabase.put(gradesList.getAll());
 
             for (Subject subject : subjectsDatabase.getAllSubjectsNames()) {
-                    List<GradeItem> gradeItems = gradesDatabase.getSubjectGrades(userId, SubjectsDatabase.getSubjectId(subject.getName()));
+                List<GradeItem> gradeItems = gradesDatabase.getSubjectGrades(context.getSharedPreferences("LoginData", Context.MODE_PRIVATE).getLong("isLogin", 0),
+                        SubjectsDatabase.getSubjectId(subject.getName()));
                 if (gradeItems.size() > 0) {
                     subjectWithGradesList.add(new SubjectWithGrades(subject.getName(), gradeItems));
                 }
@@ -118,11 +75,6 @@ public class GradesFragment extends Fragment {
 
             gradesDatabase.close();
 
-
-            } catch (Exception e) {
-                e.printStackTrace();
-            }
-
             return null;
         }
 

app/src/main/java/io/github/wulkanowy/activity/main/LoginTask.java

@@ -1,137 +1,86 @@
 package io.github.wulkanowy.activity.main;
 
-import android.app.Activity;
 import android.app.ProgressDialog;
+import android.content.Context;
 import android.content.Intent;
-import android.content.SharedPreferences;
-import android.database.SQLException;
 import android.os.AsyncTask;
 import android.widget.Toast;
 
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-
 import java.io.IOException;
 
 import io.github.wulkanowy.R;
 import io.github.wulkanowy.activity.dashboard.DashboardActivity;
-import io.github.wulkanowy.api.Cookies;
-import io.github.wulkanowy.api.StudentAndParent;
 import io.github.wulkanowy.api.login.AccountPermissionException;
 import io.github.wulkanowy.api.login.BadCredentialsException;
-import io.github.wulkanowy.api.login.Login;
 import io.github.wulkanowy.api.login.LoginErrorException;
-import io.github.wulkanowy.api.user.BasicInformation;
-import io.github.wulkanowy.api.user.PersonalData;
-import io.github.wulkanowy.database.accounts.Account;
-import io.github.wulkanowy.database.accounts.AccountsDatabase;
-import io.github.wulkanowy.database.cookies.CookiesDatabase;
 import io.github.wulkanowy.security.CryptoException;
-import io.github.wulkanowy.security.Safety;
+import io.github.wulkanowy.services.jobs.GradesSync;
+import io.github.wulkanowy.services.synchronisation.DataSynchronisation;
+import io.github.wulkanowy.services.synchronisation.VulcanSynchronisation;
+import io.github.wulkanowy.utilities.ConnectionUtilities;
 
 public class LoginTask extends AsyncTask<String, Integer, Integer> {
 
-    private Activity activity;
+    private Context context;
-
-    private boolean save;
 
     private ProgressDialog progress;
 
-    public LoginTask(Activity activity, boolean save) {
+    public LoginTask(Context context) {
-        this.activity = activity;
+        this.context = context;
-        this.save = save;
+        this.progress = new ProgressDialog(context);
-
-        this.progress = new ProgressDialog(activity);
     }
 
     @Override
     protected void onPreExecute() {
         super.onPreExecute();
 
-        progress.setTitle(activity.getText(R.string.login_text));
+        progress.setTitle(context.getText(R.string.login_text));
-        progress.setMessage(activity.getText(R.string.please_wait_text));
+        progress.setMessage(context.getText(R.string.please_wait_text));
         progress.setCancelable(false);
         progress.show();
     }
 
     @Override
     protected Integer doInBackground(String... credentials) {
-        Cookies cookies = new Cookies();
-        Login login = new Login(cookies);
 
+        if (ConnectionUtilities.isOnline(context)) {
+            VulcanSynchronisation vulcanSynchronisation = new VulcanSynchronisation();
             try {
-            login.login(credentials[0], credentials[1], credentials[2]);
+                vulcanSynchronisation.loginNewUser(credentials[0], credentials[1], credentials[2], context);
             } catch (BadCredentialsException e) {
                 return R.string.login_bad_credentials_text;
             } catch (AccountPermissionException e) {
                 return R.string.login_bad_account_permission_text;
-        } catch (LoginErrorException e) {
-            return R.string.login_denied_text;
-        }
-        try {
-            Gson gson = new GsonBuilder().enableComplexMapKeySerialization()
-                    .setPrettyPrinting().create();
-            CookiesDatabase cookiesDatabase = new CookiesDatabase(activity);
-            cookiesDatabase.open();
-            cookiesDatabase.put(gson.toJson(login.getCookies()));
-            cookiesDatabase.close();
-        } catch (SQLException e) {
-            return R.string.login_cookies_save_failed_text;
-        }
-
-        if (save) {
-            try {
-                StudentAndParent snp = new StudentAndParent(login.getCookiesObject(),
-                        credentials[2]);
-                BasicInformation userInfo = new BasicInformation(snp);
-                PersonalData personalData = userInfo.getPersonalData();
-                String firstAndLastName = personalData.getFirstAndLastName();
-
-                Safety safety = new Safety(activity);
-
-                Account account = new Account()
-                        .setName(firstAndLastName)
-                        .setEmail(credentials[0])
-                        .setPassword(safety.encrypt(credentials[0], credentials[1]))
-                        .setSymbol(credentials[2]);
-
-                AccountsDatabase accountsDatabase = new AccountsDatabase(activity);
-
-                accountsDatabase.open();
-                long idUser = accountsDatabase.put(account);
-                accountsDatabase.close();
-
-                SharedPreferences sharedPreferences = activity.getSharedPreferences("LoginData", activity.MODE_PRIVATE);
-                SharedPreferences.Editor editor = sharedPreferences.edit();
-                editor.putLong("isLogin", idUser);
-                editor.apply();
-
-            } catch (SQLException e) {
-                return R.string.SQLite_ioError_text;
-            } catch (IOException | LoginErrorException e) {
-                return R.string.login_denied_text;
             } catch (CryptoException e) {
                 return R.string.encrypt_failed_text;
-            } catch (UnsupportedOperationException e) {
+            } catch (LoginErrorException | IOException e) {
-                return R.string.root_failed_text;
+                return R.string.login_denied_text;
             }
-        }
+
-        //Map<String, String> cookiesList = login.getJar();
+            DataSynchronisation dataSynchronisation = new DataSynchronisation(context);
+            dataSynchronisation.syncGradesAndSubjects(vulcanSynchronisation);
 
             return R.string.login_accepted_text;
+
+        } else {
+            return R.string.noInternet_text;
+        }
     }
 
     protected void onPostExecute(Integer messageID) {
         super.onPostExecute(messageID);
 
+        GradesSync gradesSync = new GradesSync();
+        gradesSync.scheduledJob(context);
+
         progress.dismiss();
 
-        Toast.makeText(activity, activity.getString(messageID), Toast.LENGTH_LONG).show();
+        Toast.makeText(context, context.getString(messageID), Toast.LENGTH_LONG).show();
 
         if (messageID == R.string.login_accepted_text || messageID == R.string.root_failed_text
                 || messageID == R.string.encrypt_failed_text) {
-            Intent intent = new Intent(activity, DashboardActivity.class);
+            Intent intent = new Intent(context, DashboardActivity.class);
-            activity.startActivity(intent);
+            context.startActivity(intent);
         }
     }
 }

app/src/main/java/io/github/wulkanowy/activity/main/MainActivity.java

@@ -20,6 +20,7 @@ import io.github.wulkanowy.R;
 public class MainActivity extends AppCompatActivity {
 
     private float mTouchPosition;
+
     private float mReleasePosition;
 
     @Override
@@ -71,7 +72,7 @@ public class MainActivity extends AppCompatActivity {
         }
 
         if (!email.isEmpty() && !password.isEmpty() && !symbol.isEmpty()) {
-            new LoginTask(this, true).execute(email, password, symbol);
+            new LoginTask(this).execute(email, password, symbol);
         } else {
             Toast.makeText(this, R.string.data_text, Toast.LENGTH_SHORT).show();
         }

app/src/main/java/io/github/wulkanowy/activity/started/LoadingTask.java

@@ -1,36 +1,26 @@
 package io.github.wulkanowy.activity.started;
 
-import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
-import android.database.SQLException;
 import android.os.AsyncTask;
 import android.widget.Toast;
 
-import java.io.IOException;
-import java.net.InetSocketAddress;
-import java.net.Socket;
-import java.net.SocketAddress;
-
 import io.github.wulkanowy.R;
-import io.github.wulkanowy.activity.main.LoginTask;
+import io.github.wulkanowy.activity.dashboard.DashboardActivity;
 import io.github.wulkanowy.activity.main.MainActivity;
-import io.github.wulkanowy.database.accounts.Account;
+import io.github.wulkanowy.services.jobs.GradesSync;
-import io.github.wulkanowy.database.accounts.AccountsDatabase;
+import io.github.wulkanowy.utilities.ConnectionUtilities;
-import io.github.wulkanowy.security.CryptoException;
-import io.github.wulkanowy.security.Safety;
 
-public class LoadingTask extends AsyncTask<Void, Void, Void> {
+public class LoadingTask extends AsyncTask<Void, Void, Boolean> {
 
-    private final boolean SAVE_DATA = true;
+    private Context context;
-    private Activity activity;
-    private boolean isOnline;
 
-    LoadingTask(Activity main) {
+    LoadingTask(Context context) {
-        activity = main;
+        this.context = context;
     }
 
     @Override
-    protected Void doInBackground(Void... voids) {
+    protected Boolean doInBackground(Void... voids) {
 
         try {
             Thread.sleep(500);
@@ -38,74 +28,27 @@ public class LoadingTask extends AsyncTask<Void, Void, Void> {
             e.printStackTrace();
         }
 
-        isOnline = isOnline();
+        return ConnectionUtilities.isOnline(context);
-
-        return null;
     }
 
-    protected void onPostExecute(Void result) {
+    protected void onPostExecute(Boolean result) {
+        super.onPostExecute(result);
 
-        if (isOnline) {
+        if (!result) {
-            signIn();
+            Toast.makeText(context, R.string.noInternet_text, Toast.LENGTH_LONG).show();
+        }
+
+        if (context.getSharedPreferences("LoginData", Context.MODE_PRIVATE).getLong("isLogin", 0) == 0) {
+            Intent intent = new Intent(context, MainActivity.class);
+            context.startActivity(intent);
         } else {
-            Intent intent = new Intent(activity, MainActivity.class);
+            GradesSync gradesSync = new GradesSync();
-            activity.startActivity(intent);
+            gradesSync.scheduledJob(context);
 
-            Toast.makeText(activity, R.string.noInternet_text, Toast.LENGTH_SHORT).show();
+            Intent intent = new Intent(context, DashboardActivity.class);
-        }
+            context.startActivity(intent);
         }
 
-    private boolean isOnline() {
-        try {
-            int timeoutMs = 1500;
-            Socket sock = new Socket();
-            SocketAddress address = new InetSocketAddress("8.8.8.8", 53);
 
-            sock.connect(address, timeoutMs);
-            sock.close();
-
-            return true;
-        } catch (IOException e) {
-            return false;
-        }
-    }
-
-    private boolean signIn() {
-
-        if (SAVE_DATA) {
-            AccountsDatabase accountsDatabase = new AccountsDatabase(activity);
-            accountsDatabase.open();
-
-            if (accountsDatabase.checkExist("accounts")) {
-                try {
-                    Account account = accountsDatabase.getAccount(activity.getSharedPreferences("LoginData", activity.MODE_PRIVATE).getLong("isLogin", 0));
-                    accountsDatabase.close();
-
-                    if (account != null) {
-
-                        Safety safety = new Safety(activity);
-
-                        new LoginTask(activity, false).execute(
-                                account.getEmail(),
-                                safety.decrypt(account.getEmail(), account.getPassword()),
-                                account.getSymbol()
-                        );
-
-                        return true;
-                    }
-                } catch (SQLException e) {
-                    Toast.makeText(activity, R.string.SQLite_ioError_text,
-                            Toast.LENGTH_LONG).show();
-                } catch (CryptoException e) {
-                    Toast.makeText(activity, R.string.decrypt_failed_text, Toast.LENGTH_LONG).show();
-                }
-            }
-            accountsDatabase.close();
-        }
-
-        Intent intent = new Intent(activity, MainActivity.class);
-        activity.startActivity(intent);
-
-        return false;
     }
 }

app/src/main/java/io/github/wulkanowy/database/DatabaseAdapter.java

@@ -10,7 +10,7 @@ public class DatabaseAdapter {
 
     private final String DATABASE_NAME = "accountdatabase.db";
 
-    private final int DATABASE_VERSION = 5;
+    private final int DATABASE_VERSION = 6;
 
     public static SQLiteDatabase database;
 
@@ -44,7 +44,7 @@ public class DatabaseAdapter {
         Log.d(DatabaseHelper.DEBUG_TAG, "Close database");
     }
 
-    public boolean checkExist(String tableName, String dbfield, String fieldValue) {
+    protected boolean checkExist(String tableName, String dbfield, String fieldValue) {
 
         Cursor cursor;
 
@@ -73,17 +73,16 @@ public class DatabaseAdapter {
         return false;
     }
 
-    public boolean checkExist(String tableName) {
+    protected boolean checkExist(String tableName) {
         return checkExist(tableName, null, null);
     }
 
-    public void deleteAndCreate(String tableName) {
+    protected void deleteAndCreate(String tableName) {
 
         database.execSQL(databaseHelper.DROP_TABLE + tableName);
         database.execSQL(databaseHelper.SUBJECT_TABLE);
         database.execSQL(databaseHelper.ACCOUNT_TABLE);
         database.execSQL(databaseHelper.GRADE_TABLE);
-        database.execSQL(databaseHelper.COOKIES_TABLE);
 
         Log.d(DatabaseHelper.DEBUG_TAG, "Recreate table " + tableName);
 

app/src/main/java/io/github/wulkanowy/database/DatabaseHelper.java

@@ -40,10 +40,6 @@ public class DatabaseHelper extends SQLiteOpenHelper {
             "semester INTEGER, " +
             "isNew INTEGER );";
 
-    public final String COOKIES_TABLE = "CREATE TABLE IF NOT EXISTS cookies( " +
-            "id INTEGER PRIMARY KEY AUTOINCREMENT, " +
-            "cookies TEXT );";
-
     public final String DROP_TABLE = "DROP TABLE IF EXISTS ";
 
     public DatabaseHelper(Context context, String name, CursorFactory factory, int version) {
@@ -55,7 +51,6 @@ public class DatabaseHelper extends SQLiteOpenHelper {
         db.execSQL(ACCOUNT_TABLE);
         db.execSQL(SUBJECT_TABLE);
         db.execSQL(GRADE_TABLE);
-        db.execSQL(COOKIES_TABLE);
         Log.d(DEBUG_TAG, "Create database");
     }
 
@@ -64,7 +59,6 @@ public class DatabaseHelper extends SQLiteOpenHelper {
         db.execSQL(DROP_TABLE + "accounts");
         db.execSQL(DROP_TABLE + "subjects");
         db.execSQL(DROP_TABLE + "grades");
-        db.execSQL(DROP_TABLE + "cookies");
         onCreate(db);
         Log.d(DEBUG_TAG, "Database upgrade from ver." + oldVersion + " to ver." + newVersion);
     }

app/src/main/java/io/github/wulkanowy/database/accounts/AccountsDatabase.java

@@ -13,10 +13,15 @@ import io.github.wulkanowy.database.DatabaseHelper;
 public class AccountsDatabase extends DatabaseAdapter {
 
     private String name = "name";
+
     private String email = "email";
+
     private String password = "password";
+
     private String symbol = "symbol";
+
     private String idText = "id";
+
     private String accounts = "accounts";
 
     public AccountsDatabase(Context context) {

app/src/main/java/io/github/wulkanowy/database/cookies/CookiesDatabase.java

@@ -1,58 +0,0 @@
-package io.github.wulkanowy.database.cookies;
-
-import android.content.ContentValues;
-import android.content.Context;
-import android.database.Cursor;
-import android.database.SQLException;
-import android.util.Log;
-
-import io.github.wulkanowy.database.DatabaseAdapter;
-import io.github.wulkanowy.database.DatabaseHelper;
-
-public class CookiesDatabase extends DatabaseAdapter {
-
-    private String cookies = "cookies";
-
-    public CookiesDatabase(Context context) {
-        super(context);
-    }
-
-    public long put(String serializableCookiesMap) {
-
-        ContentValues newCookie = new ContentValues();
-        newCookie.put(cookies, serializableCookiesMap);
-
-        if (!database.isReadOnly()) {
-            if (!checkExist(cookies)) {
-                long newId = database.insertOrThrow(cookies, null, newCookie);
-                Log.d(DatabaseHelper.DEBUG_TAG, "Put cookies into database");
-                return newId;
-            } else {
-                deleteAndCreate(cookies);
-                long newId = database.insertOrThrow(cookies, null, newCookie);
-                Log.d(DatabaseHelper.DEBUG_TAG, "Put cookies into database");
-                return newId;
-            }
-        } else {
-            Log.e(DatabaseHelper.DEBUG_TAG, "Attempt to write on read-only database");
-            throw new SQLException("Attempt to write on read-only database");
-        }
-    }
-
-    public String getCookies() {
-
-        String exec = "SELECT " + cookies + " FROM " + cookies;
-
-        Cursor cursor = database.rawQuery(exec, null);
-
-        cursor.moveToFirst();
-
-        String cookie = cursor.getString(0);
-
-        cursor.close();
-
-        Log.d(DatabaseHelper.DEBUG_TAG, "Extract cookies from database");
-
-        return cookie;
-    }
-}

app/src/main/java/io/github/wulkanowy/database/subjects/SubjectsDatabase.java

@@ -18,11 +18,17 @@ import io.github.wulkanowy.database.DatabaseHelper;
 public class SubjectsDatabase extends DatabaseAdapter {
 
     private static String idText = "id";
+
     private static String name = "name";
+
     private static String predictedRating1 = "predictedRating1";
+
     private static String finalRating1 = "finalRating1";
+
     private static String predictedRating2 = "predictedRating2";
+
     private static String finalRating2 = "finalRating2";
+
     private static String subjects = "subjects";
 
     public SubjectsDatabase(Context context) {

app/src/main/java/io/github/wulkanowy/security/Scrambler.java

@@ -31,8 +31,11 @@ import javax.security.auth.x500.X500Principal;
 public class Scrambler {
 
     private KeyStore keyStore;
+
     private static final String ANDROID_KEYSTORE = "AndroidKeyStore";
+
     public final static String DEBUG_TAG = "KeyStoreSecurity";
+
     public Context context;
 
     public Scrambler(Context context) {

app/src/main/java/io/github/wulkanowy/services/jobs/GradesSync.java

@@ -0,0 +1,53 @@
+package io.github.wulkanowy.services.jobs;
+
+import com.firebase.jobdispatcher.Constraint;
+import com.firebase.jobdispatcher.FirebaseJobDispatcher;
+import com.firebase.jobdispatcher.Job;
+import com.firebase.jobdispatcher.Lifetime;
+import com.firebase.jobdispatcher.RetryStrategy;
+import com.firebase.jobdispatcher.Trigger;
+
+import java.io.IOException;
+
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.api.login.LoginErrorException;
+import io.github.wulkanowy.security.CryptoException;
+import io.github.wulkanowy.services.synchronisation.DataSynchronisation;
+import io.github.wulkanowy.services.synchronisation.VulcanSynchronisation;
+
+public class GradesSync extends VulcanSync {
+
+    public static final String UNIQUE_TAG = "GradesSync34512";
+
+    public static final int DEFAULT_INTERVAL_START = 60 * 50;
+
+    public static final int DEFAULT_INTERVAL_END = DEFAULT_INTERVAL_START + (60 * 10);
+
+    @Override
+    protected Job createJob(FirebaseJobDispatcher dispatcher) {
+        return dispatcher.newJobBuilder()
+                .setLifetime(Lifetime.FOREVER)
+                .setService(GradeJob.class)
+                .setTag(UNIQUE_TAG)
+                .setRecurring(true)
+                .setTrigger(Trigger.executionWindow(DEFAULT_INTERVAL_START, DEFAULT_INTERVAL_END))
+                .setConstraints(Constraint.ON_ANY_NETWORK)
+                .setReplaceCurrent(true)
+                .setRetryStrategy(RetryStrategy.DEFAULT_EXPONENTIAL)
+                .build();
+    }
+
+    public static class GradeJob extends VulcanJob {
+
+        @Override
+        public void workToBePerformed() throws CryptoException, BadCredentialsException,
+                LoginErrorException, AccountPermissionException, IOException {
+
+            VulcanSynchronisation vulcanSynchronisation = new VulcanSynchronisation();
+            DataSynchronisation dataSynchronisation = new DataSynchronisation(getApplicationContext());
+            vulcanSynchronisation.loginCurrentUser(getApplicationContext());
+            dataSynchronisation.syncGrades(vulcanSynchronisation);
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/services/jobs/SubjectsSync.java

@@ -0,0 +1,54 @@
+package io.github.wulkanowy.services.jobs;
+
+import com.firebase.jobdispatcher.Constraint;
+import com.firebase.jobdispatcher.FirebaseJobDispatcher;
+import com.firebase.jobdispatcher.Job;
+import com.firebase.jobdispatcher.Lifetime;
+import com.firebase.jobdispatcher.RetryStrategy;
+import com.firebase.jobdispatcher.Trigger;
+
+import java.io.IOException;
+
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.api.login.LoginErrorException;
+import io.github.wulkanowy.security.CryptoException;
+import io.github.wulkanowy.services.synchronisation.DataSynchronisation;
+import io.github.wulkanowy.services.synchronisation.VulcanSynchronisation;
+
+public class SubjectsSync extends VulcanSync {
+
+    public static final String UNIQUE_TAG = "SubjectsSync34512";
+
+    public static final int DEFAULT_INTERVAL_START = 0;
+
+    public static final int DEFAULT_INTERVAL_END = DEFAULT_INTERVAL_START + 10;
+
+    @Override
+    protected Job createJob(FirebaseJobDispatcher dispatcher) {
+        return dispatcher.newJobBuilder()
+                .setLifetime(Lifetime.UNTIL_NEXT_BOOT)
+                .setService(SubjectJob.class)
+                .setTag(UNIQUE_TAG)
+                .setRecurring(false)
+                .setTrigger(Trigger.executionWindow(DEFAULT_INTERVAL_START, DEFAULT_INTERVAL_END))
+                .setConstraints(Constraint.ON_ANY_NETWORK)
+                .setReplaceCurrent(true)
+                .setRetryStrategy(RetryStrategy.DEFAULT_EXPONENTIAL)
+                .build();
+    }
+
+    private class SubjectJob extends VulcanJob {
+
+        @Override
+        public void workToBePerformed() throws CryptoException, BadCredentialsException,
+                LoginErrorException, AccountPermissionException, IOException {
+
+            VulcanSynchronisation vulcanSynchronisation = new VulcanSynchronisation();
+            DataSynchronisation dataSynchronisation = new DataSynchronisation(getApplicationContext());
+            vulcanSynchronisation.loginCurrentUser(getApplicationContext());
+            dataSynchronisation.syncSubjects(vulcanSynchronisation);
+
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/services/jobs/VulcanJob.java

@@ -0,0 +1,51 @@
+package io.github.wulkanowy.services.jobs;
+
+import android.os.AsyncTask;
+import android.util.Log;
+
+import com.firebase.jobdispatcher.JobParameters;
+import com.firebase.jobdispatcher.JobService;
+
+import java.io.IOException;
+
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.api.login.LoginErrorException;
+import io.github.wulkanowy.security.CryptoException;
+
+public abstract class VulcanJob extends JobService {
+
+    private SyncTask syncTask = new SyncTask();
+
+    @Override
+    public boolean onStartJob(JobParameters params) {
+        Log.d(VulcanSync.DEBUG_TAG, "Start job");
+        syncTask.execute(params);
+        return true;
+    }
+
+    @Override
+    public boolean onStopJob(JobParameters params) {
+        Log.d(VulcanSync.DEBUG_TAG, "Stop job");
+        syncTask.cancel(true);
+        return true;
+    }
+
+    public abstract void workToBePerformed() throws CryptoException, BadCredentialsException,
+            LoginErrorException, AccountPermissionException, IOException;
+
+    private class SyncTask extends AsyncTask<JobParameters, Void, Void> {
+
+        @Override
+        protected Void doInBackground(JobParameters... params) {
+            try {
+                workToBePerformed();
+            } catch (Exception e) {
+                Log.e(VulcanSync.DEBUG_TAG, "User logging in the background failed", e);
+            } finally {
+                jobFinished(params[0], false);
+            }
+            return null;
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/services/jobs/VulcanSync.java

@@ -0,0 +1,21 @@
+package io.github.wulkanowy.services.jobs;
+
+
+import android.content.Context;
+
+import com.firebase.jobdispatcher.FirebaseJobDispatcher;
+import com.firebase.jobdispatcher.GooglePlayDriver;
+import com.firebase.jobdispatcher.Job;
+
+public abstract class VulcanSync {
+
+    public static final String DEBUG_TAG = "SynchronizationService";
+
+    public void scheduledJob(Context context) {
+        FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(context));
+        dispatcher.mustSchedule(createJob(dispatcher));
+    }
+
+    protected abstract Job createJob(FirebaseJobDispatcher dispatcher);
+
+}

app/src/main/java/io/github/wulkanowy/services/synchronisation/DataSynchronisation.java

@@ -0,0 +1,40 @@
+package io.github.wulkanowy.services.synchronisation;
+
+import android.content.Context;
+import android.util.Log;
+
+import io.github.wulkanowy.services.jobs.VulcanSync;
+
+public class DataSynchronisation {
+
+    private Context context;
+
+    public DataSynchronisation(Context context) {
+        this.context = context;
+    }
+
+    public void syncGrades(VulcanSynchronisation vulcanSynchronisation) {
+        GradesSynchronisation gradesSynchronisation = new GradesSynchronisation();
+
+        try {
+            gradesSynchronisation.sync(vulcanSynchronisation, context);
+        } catch (Exception e) {
+            Log.e(VulcanSync.DEBUG_TAG, "Synchronisation of grades failed", e);
+        }
+    }
+
+    public void syncSubjects(VulcanSynchronisation vulcanSynchronisation) {
+        SubjectsSynchronisation subjectsSynchronisation = new SubjectsSynchronisation();
+
+        try {
+            subjectsSynchronisation.sync(vulcanSynchronisation, context);
+        } catch (Exception e) {
+            Log.e(VulcanSync.DEBUG_TAG, "Synchronisation of subjects failed", e);
+        }
+    }
+
+    public void syncGradesAndSubjects(VulcanSynchronisation vulcanSynchronisation) {
+        syncSubjects(vulcanSynchronisation);
+        syncGrades(vulcanSynchronisation);
+    }
+}

app/src/main/java/io/github/wulkanowy/services/synchronisation/GradesSynchronisation.java

@@ -0,0 +1,23 @@
+package io.github.wulkanowy.services.synchronisation;
+
+import android.content.Context;
+
+import java.io.IOException;
+import java.text.ParseException;
+
+import io.github.wulkanowy.api.grades.GradesList;
+import io.github.wulkanowy.api.login.LoginErrorException;
+import io.github.wulkanowy.database.grades.GradesDatabase;
+
+public class GradesSynchronisation {
+
+    public void sync(VulcanSynchronisation vulcanSynchronisation, Context context) throws IOException, ParseException, LoginErrorException {
+
+        GradesList gradesList = new GradesList(vulcanSynchronisation.getStudentAndParent());
+
+        GradesDatabase gradesDatabase = new GradesDatabase(context);
+        gradesDatabase.open();
+        gradesDatabase.put(gradesList.getAll());
+        gradesDatabase.close();
+    }
+}

app/src/main/java/io/github/wulkanowy/services/synchronisation/SubjectsSynchronisation.java

@@ -0,0 +1,23 @@
+package io.github.wulkanowy.services.synchronisation;
+
+import android.content.Context;
+
+import java.io.IOException;
+import java.text.ParseException;
+
+import io.github.wulkanowy.api.grades.SubjectsList;
+import io.github.wulkanowy.api.login.LoginErrorException;
+import io.github.wulkanowy.database.subjects.SubjectsDatabase;
+
+public class SubjectsSynchronisation {
+
+    public void sync(VulcanSynchronisation vulcanSynchronisation, Context context) throws IOException, ParseException, LoginErrorException {
+
+        SubjectsList subjectsList = new SubjectsList(vulcanSynchronisation.getStudentAndParent());
+
+        SubjectsDatabase subjectsDatabase = new SubjectsDatabase(context);
+        subjectsDatabase.open();
+        subjectsDatabase.put(subjectsList.getAll());
+        subjectsDatabase.close();
+    }
+}

app/src/main/java/io/github/wulkanowy/services/synchronisation/VulcanSynchronisation.java

@@ -0,0 +1,106 @@
+package io.github.wulkanowy.services.synchronisation;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.util.Log;
+
+import java.io.IOException;
+import java.util.Map;
+
+import io.github.wulkanowy.api.Cookies;
+import io.github.wulkanowy.api.StudentAndParent;
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.api.login.Login;
+import io.github.wulkanowy.api.login.LoginErrorException;
+import io.github.wulkanowy.api.user.BasicInformation;
+import io.github.wulkanowy.api.user.PersonalData;
+import io.github.wulkanowy.database.accounts.Account;
+import io.github.wulkanowy.database.accounts.AccountsDatabase;
+import io.github.wulkanowy.security.CryptoException;
+import io.github.wulkanowy.security.Safety;
+import io.github.wulkanowy.services.jobs.VulcanSync;
+
+public class VulcanSynchronisation {
+
+    private StudentAndParent studentAndParent;
+
+    public void loginCurrentUser(Context context) throws CryptoException, BadCredentialsException, LoginErrorException, AccountPermissionException, IOException {
+
+        long userId = context.getSharedPreferences("LoginData", Context.MODE_PRIVATE).getLong("isLogin", 0);
+
+        if (userId != 0) {
+            AccountsDatabase accountsDatabase = new AccountsDatabase(context);
+            accountsDatabase.open();
+            Account account = accountsDatabase.getAccount(userId);
+            accountsDatabase.close();
+            Safety safety = new Safety(context);
+
+            Login login = loginUser(
+                    account.getEmail(),
+                    safety.decrypt(account.getEmail(), account.getPassword()),
+                    account.getSymbol());
+
+            getAndSetStudentAndParentFromApi(account.getSymbol(), login.getCookies());
+        } else {
+            Log.wtf(VulcanSync.DEBUG_TAG, "loginCurrentUser - USERID IS EMPTY");
+        }
+    }
+
+    public void loginNewUser(String email, String password, String symbol, Context context) throws BadCredentialsException, LoginErrorException, AccountPermissionException, IOException, CryptoException {
+
+        Login login = loginUser(email, password, symbol);
+
+        Safety safety = new Safety(context);
+        AccountsDatabase accountsDatabase = new AccountsDatabase(context);
+        BasicInformation basicInformation = new BasicInformation(getAndSetStudentAndParentFromApi(symbol, login.getCookies()));
+        PersonalData personalData = basicInformation.getPersonalData();
+
+        Account account = new Account()
+                .setName(personalData.getFirstAndLastName())
+                .setEmail(email)
+                .setPassword(safety.encrypt(email, password))
+                .setSymbol(symbol);
+
+        accountsDatabase.open();
+        long idNewUser = accountsDatabase.put(account);
+        accountsDatabase.close();
+
+        SharedPreferences sharedPreferences = context.getSharedPreferences("LoginData", Context.MODE_PRIVATE);
+        SharedPreferences.Editor editor = sharedPreferences.edit();
+        editor.putLong("isLogin", idNewUser);
+        editor.apply();
+    }
+
+    public StudentAndParent getStudentAndParent() {
+        return studentAndParent;
+    }
+
+    private void setStudentAndParent(StudentAndParent studentAndParent) {
+        this.studentAndParent = studentAndParent;
+    }
+
+    private Login loginUser(String email, String password, String symbol) throws BadCredentialsException, LoginErrorException, AccountPermissionException {
+
+        Cookies cookies = new Cookies();
+        Login login = new Login(cookies);
+        login.login(email, password, symbol);
+        return login;
+
+    }
+
+    private StudentAndParent getAndSetStudentAndParentFromApi(String symbol, Map<String, String> cookiesMap) throws IOException, LoginErrorException {
+
+        if (studentAndParent == null) {
+            Cookies cookies = new Cookies();
+            cookies.setItems(cookiesMap);
+
+            StudentAndParent snp = new StudentAndParent(cookies, symbol);
+
+            setStudentAndParent(snp);
+            return snp;
+        } else {
+            return studentAndParent;
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/utilities/ConnectionUtilities.java

@@ -0,0 +1,15 @@
+package io.github.wulkanowy.utilities;
+
+import android.content.Context;
+import android.net.ConnectivityManager;
+import android.net.NetworkInfo;
+
+public abstract class ConnectionUtilities {
+
+    public static boolean isOnline(Context context) {
+        ConnectivityManager connectivityManager =
+                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
+        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
+        return networkInfo != null && networkInfo.isConnectedOrConnecting();
+    }
+}

app/src/main/java/io/github/wulkanowy/utilities/DateHelper.java

@@ -10,6 +10,7 @@ import java.util.TimeZone;
 abstract public class DateHelper {
 
     private static final long TICKS_AT_EPOCH = 621355968000000000L;
+
     private static final long TICKS_PER_MILLISECOND = 10000;
 
     public static long getTicks(Date date) {

app/src/main/java/io/github/wulkanowy/utilities/RootUtilities.java

@@ -5,7 +5,7 @@ import android.os.Build;
 
 import java.io.File;
 
-public class RootUtilities {
+abstract public class RootUtilities {
 
     public static boolean isRooted() {