MVP (#46)

.bettercodehub.yml

@@ -1,5 +1,5 @@
 exclude:
-- /app/src/main/java/io/github/wulkanowy/db/dao/entities/.*
+- /app/src/main/java/io/github/wulkanowy/data/db/dao/entities/.*
 component_depth: 1
 languages:
 - java

api/src/main/java/io/github/wulkanowy/api/Vulcan.java

@@ -48,7 +48,7 @@ public class Vulcan {
         this.login = login;
     }
 
-    public String login(String email, String password, String symbol)
+    public void login(String email, String password, String symbol)
             throws BadCredentialsException, AccountPermissionException,
             LoginErrorException, IOException, VulcanOfflineException {
 
@@ -56,8 +56,6 @@ public class Vulcan {
         login = getLogin();
 
         this.symbol = login.login(this.email, password, symbol);
-
-        return this.symbol;
     }
 
     public Vulcan login(String email, String password, String symbol, String id)
@@ -82,6 +80,10 @@ public class Vulcan {
         return email;
     }
 
+    public String getSymbol() {
+        return symbol;
+    }
+
     private void setFullEndpointInfo(String email) {
         String[] creds = email.split("\\\\");
 

api/src/main/java/io/github/wulkanowy/api/login/Login.java

@@ -27,14 +27,6 @@ public class Login {
         this.client = client;
     }
 
-    private String getLoginPageUrl() {
-        return LOGIN_PAGE_URL;
-    }
-
-    private String getLoginEndpointPageUrl() {
-        return LOGIN_ENDPOINT_PAGE_URL;
-    }
-
     public String login(String email, String password, String symbol)
             throws BadCredentialsException, LoginErrorException,
             AccountPermissionException, IOException, VulcanOfflineException {
@@ -47,7 +39,7 @@ public class Login {
             throws IOException, BadCredentialsException {
         this.symbol = symbol;
 
-        Document html = client.postPageByUrl(getLoginPageUrl(), new String[][]{
+        Document html = client.postPageByUrl(LOGIN_PAGE_URL, new String[][]{
                 {"LoginName", email},
                 {"Password", password}
         });
@@ -64,8 +56,7 @@ public class Login {
         this.symbol = findSymbol(defaultSymbol, certificate);
         client.setSymbol(this.symbol);
 
-        Document html = client.postPageByUrl(getLoginEndpointPageUrl()
+        Document html = client.postPageByUrl(LOGIN_ENDPOINT_PAGE_URL, new String[][]{
-                .replace("{symbol}", this.symbol), new String[][]{
                 {"wa", "wsignin1.0"},
                 {"wresult", certificate}
         });

app/build.gradle

@@ -62,29 +62,29 @@ android {
 }
 
 greendao {
-    schemaVersion 19
+    schemaVersion 20
     generateTests = true
 }
 
 dependencies {
     implementation project(':api')
-    implementation 'com.android.support:appcompat-v7:27.0.2'
+    implementation 'com.android.support:appcompat-v7:27.1.0'
-    implementation 'com.android.support:design:27.0.2'
+    implementation 'com.android.support:design:27.1.0'
-    implementation 'com.android.support:support-v4:27.0.2'
+    implementation 'com.android.support:support-v4:27.1.0'
-    implementation 'com.android.support:recyclerview-v7:27.0.2'
+    implementation 'com.android.support:recyclerview-v7:27.1.0'
-    implementation 'com.android.support:cardview-v7:27.0.2'
+    implementation 'com.android.support:cardview-v7:27.1.0'
-    implementation 'com.android.support:customtabs:27.0.2'
+    implementation 'com.android.support:customtabs:27.1.0'
     implementation 'com.firebase:firebase-jobdispatcher:0.8.5'
-    implementation 'com.thoughtbot:expandablerecyclerview:1.3'
     implementation 'org.apache.commons:commons-lang3:3.7'
-    implementation 'eu.davidea:flexible-adapter:5.0.0-rc3'
+    implementation 'eu.davidea:flexible-adapter:5.0.0-rc4'
+    implementation 'eu.davidea:flexible-adapter-ui:1.0.0-b1'
     implementation 'org.apache.commons:commons-collections4:4.1'
     implementation 'org.greenrobot:greendao:3.2.2'
     implementation 'com.jakewharton:butterknife:8.8.1'
     implementation 'joda-time:joda-time:2.9.9'
-    implementation 'com.github.javiersantos:AppUpdater:2.6.4'
     implementation 'com.google.dagger:dagger-android:2.14.1'
     implementation 'com.google.dagger:dagger-android-support:2.14.1'
+    implementation 'com.aurelhubert:ahbottomnavigation:2.1.0'
 
     implementation('com.crashlytics.sdk.android:crashlytics:2.8.0@aar') {
         transitive = true
@@ -94,6 +94,7 @@ dependencies {
     }
 
     annotationProcessor 'com.google.dagger:dagger-android-processor:2.14.1'
+    annotationProcessor 'com.google.dagger:dagger-compiler:2.14.1'
     annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
 
     debugImplementation 'com.amitshekhar.android:debug-db:1.0.1'

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/AccountTest.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/DayTest.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/GradeTest.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/LessonTest.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/SubjectTest.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/WeekTest.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
 

app/src/androidTest/java/io/github/wulkanowy/db/dao/DatabaseAccessTest.java

@@ -1,50 +0,0 @@
-package io.github.wulkanowy.db.dao;
-
-import android.support.test.InstrumentationRegistry;
-
-import org.greenrobot.greendao.database.Database;
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-
-import io.github.wulkanowy.db.dao.entities.DaoMaster;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.db.dao.entities.Grade;
-
-public class DatabaseAccessTest extends DatabaseAccess {
-
-    private static DaoSession daoSession;
-
-    @BeforeClass
-    public static void setUpClass() {
-        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(InstrumentationRegistry.getTargetContext()
-                , "wulkanowyTest-db");
-        Database database = devOpenHelper.getWritableDb();
-
-        daoSession = new DaoMaster(database).newSession();
-    }
-
-    @Before
-    public void setUp() {
-        daoSession.getGradeDao().deleteAll();
-        daoSession.clear();
-    }
-
-    @Test
-    public void getNewGradesTest() {
-        daoSession.getGradeDao().insert(new Grade()
-                .setIsNew(true));
-
-        Assert.assertEquals(1, new DatabaseAccess().getNewGrades(daoSession).size());
-    }
-
-    @AfterClass
-    public static void cleanUp() {
-        daoSession.getAccountDao().deleteAll();
-        daoSession.getGradeDao().deleteAll();
-        daoSession.getSubjectDao().deleteAll();
-        daoSession.clear();
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/services/sync/CurrentAccountLoginTest.java

@@ -1,106 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
-
-import org.greenrobot.greendao.database.Database;
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mockito;
-
-import java.io.IOException;
-
-import io.github.wulkanowy.api.Vulcan;
-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.api.login.VulcanOfflineException;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.AccountDao;
-import io.github.wulkanowy.db.dao.entities.DaoMaster;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.utils.security.CryptoException;
-import io.github.wulkanowy.utils.security.Safety;
-
-@RunWith(AndroidJUnit4.class)
-public class CurrentAccountLoginTest {
-
-    private static DaoSession daoSession;
-
-    private Context context;
-
-    private Context targetContext;
-
-    @BeforeClass
-    public static void setUpClass() {
-        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(InstrumentationRegistry.getTargetContext(), "wulkanowyTest-db");
-        Database database = devOpenHelper.getWritableDb();
-        daoSession = new DaoMaster(database).newSession();
-
-        DaoMaster.dropAllTables(database, true);
-        DaoMaster.createAllTables(database, true);
-    }
-
-    @Before
-    public void setUp() {
-        context = InstrumentationRegistry.getContext();
-        targetContext = InstrumentationRegistry.getTargetContext();
-
-        daoSession.getAccountDao().deleteAll();
-        daoSession.clear();
-
-        setUserIdSharePreferences(0);
-    }
-
-    @Test(expected = IOException.class)
-    public void emptyUserIdTest() throws CryptoException, BadCredentialsException,
-            AccountPermissionException, IOException, LoginErrorException, VulcanOfflineException {
-
-        CurrentAccountLogin currentAccountLogin = new CurrentAccountLogin(context, daoSession, new Vulcan());
-        currentAccountLogin.loginCurrentUser();
-    }
-
-    @Test
-    public void loginCurrentUserTest() throws Exception {
-        AccountDao accountDao = daoSession.getAccountDao();
-
-        Safety safety = new Safety();
-
-        Long userId = accountDao.insert(new Account()
-                .setEmail("TEST@TEST")
-                .setPassword(safety.encrypt("TEST@TEST", "TEST", context))
-                .setSymbol(""));
-
-        setUserIdSharePreferences(userId);
-
-        Vulcan vulcan = Mockito.mock(Vulcan.class);
-        Mockito.when(vulcan.login("TEST@TEST", "TEST", "TEST_SYMBOL", "TEST_ID")).thenReturn(new Vulcan());
-
-        CurrentAccountLogin currentAccountLogin = new CurrentAccountLogin(targetContext, daoSession, vulcan);
-        LoginSession loginSession = currentAccountLogin.loginCurrentUser();
-
-        Assert.assertNotNull(loginSession);
-        Assert.assertEquals(loginSession.getUserId(), userId);
-        Assert.assertNotNull(loginSession.getDaoSession());
-        Assert.assertEquals(loginSession.getVulcan(), vulcan);
-    }
-
-    private void setUserIdSharePreferences(long id) {
-        SharedPreferences sharedPreferences = targetContext.getSharedPreferences("LoginData", Context.MODE_PRIVATE);
-        SharedPreferences.Editor editor = sharedPreferences.edit();
-        editor.putLong("userId", id);
-        editor.apply();
-    }
-
-    @AfterClass
-    public static void cleanUp() {
-        daoSession.getAccountDao().deleteAll();
-        daoSession.clear();
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/services/sync/FirstAccountLoginTest.java

@@ -1,99 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-import android.support.test.InstrumentationRegistry;
-
-import org.greenrobot.greendao.database.Database;
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.mockito.Mockito;
-
-import io.github.wulkanowy.api.StudentAndParent;
-import io.github.wulkanowy.api.Vulcan;
-import io.github.wulkanowy.api.user.BasicInformation;
-import io.github.wulkanowy.api.user.PersonalData;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.DaoMaster;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.utils.security.Safety;
-
-public class FirstAccountLoginTest {
-
-    private static DaoSession daoSession;
-
-    private Context targetContext;
-
-    @BeforeClass
-    public static void setUpClass() {
-        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(InstrumentationRegistry.getTargetContext(), "wulkanowyTest-db");
-        Database database = devOpenHelper.getWritableDb();
-        daoSession = new DaoMaster(database).newSession();
-
-        DaoMaster.dropAllTables(database, true);
-        DaoMaster.createAllTables(database, true);
-    }
-
-    @Before
-    public void setUp() {
-        targetContext = InstrumentationRegistry.getTargetContext();
-
-        daoSession.getAccountDao().deleteAll();
-        daoSession.clear();
-
-        setUserIdSharePreferences(0);
-    }
-
-    @Test
-    public void loginTest() throws Exception {
-        StudentAndParent snp = Mockito.mock(StudentAndParent.class);
-        Mockito.when(snp.getId()).thenReturn("TEST-ID");
-
-        PersonalData personalData = Mockito.mock(PersonalData.class);
-        Mockito.doReturn("NAME-TEST").when(personalData).getFirstAndLastName();
-
-        BasicInformation basicInformation = Mockito.mock(BasicInformation.class);
-        Mockito.doReturn(personalData).when(basicInformation).getPersonalData();
-
-        Vulcan vulcan = Mockito.mock(Vulcan.class);
-        Mockito.doReturn("TEST-SYMBOL").when(vulcan).login(Mockito.anyString(), Mockito.anyString(), Mockito.anyString());
-        Mockito.doReturn(snp).when(vulcan).getStudentAndParent();
-        Mockito.doReturn(basicInformation).when(vulcan).getBasicInformation();
-
-        FirstAccountLogin firstAccountLogin = new FirstAccountLogin(targetContext, daoSession, vulcan);
-        LoginSession loginSession = firstAccountLogin.login("TEST@TEST", "TEST-PASS", "default");
-
-        Long userId = targetContext.getSharedPreferences("LoginData", Context.MODE_PRIVATE).getLong("userId", 0);
-
-        Assert.assertNotNull(loginSession);
-        Assert.assertNotEquals(0, userId.longValue());
-        Assert.assertEquals(loginSession.getUserId(), userId);
-        Assert.assertNotNull(loginSession.getDaoSession());
-        Assert.assertEquals(loginSession.getVulcan(), vulcan);
-
-        Safety safety = new Safety();
-        Account account = daoSession.getAccountDao().load(userId);
-        Assert.assertNotNull(account);
-        Assert.assertEquals("TEST@TEST", account.getEmail());
-        Assert.assertEquals("NAME-TEST", account.getName());
-        Assert.assertEquals("TEST-PASS", safety.decrypt("TEST@TEST", account.getPassword()));
-        Assert.assertEquals("TEST-SYMBOL", account.getSymbol());
-        Assert.assertEquals("TEST-ID", account.getSnpId());
-    }
-
-    private void setUserIdSharePreferences(long id) {
-        SharedPreferences sharedPreferences = targetContext.getSharedPreferences("LoginData", Context.MODE_PRIVATE);
-        SharedPreferences.Editor editor = sharedPreferences.edit();
-        editor.putLong("userId", id);
-        editor.apply();
-    }
-
-    @AfterClass
-    public static void cleanUp() {
-        daoSession.getAccountDao().deleteAll();
-        daoSession.clear();
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/services/sync/GradeSyncTest.java

@@ -1,88 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
-
-import org.greenrobot.greendao.database.Database;
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mockito;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import io.github.wulkanowy.api.Vulcan;
-import io.github.wulkanowy.api.grades.Grade;
-import io.github.wulkanowy.api.grades.GradesList;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.DaoMaster;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.db.dao.entities.Subject;
-
-@RunWith(AndroidJUnit4.class)
-public class GradeSyncTest {
-
-    private static DaoSession daoSession;
-
-    @BeforeClass
-    public static void setUpClass() {
-        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(InstrumentationRegistry.getTargetContext(), "wulkanowyTest-db");
-        Database database = devOpenHelper.getWritableDb();
-        daoSession = new DaoMaster(database).newSession();
-
-        DaoMaster.dropAllTables(database, true);
-        DaoMaster.createAllTables(database, true);
-    }
-
-    @Before
-    public void setUp() {
-        daoSession.getAccountDao().deleteAll();
-        daoSession.getGradeDao().deleteAll();
-        daoSession.getSubjectDao().deleteAll();
-        daoSession.clear();
-    }
-
-    @Test
-    public void syncGradesEmptyDatabaseTest() throws Exception {
-        Long userId = daoSession.getAccountDao().insert(new Account().setEmail("TEST@TEST"));
-        Long subjectId = daoSession.getSubjectDao().insert(new Subject().setName("Matematyka").setUserId(userId));
-
-        List<Grade> gradeList = new ArrayList<>();
-        gradeList.add(new Grade().setSubject("Matematyka").setValue("5"));
-
-        GradesList gradesListApi = Mockito.mock(GradesList.class);
-        Mockito.doReturn(gradeList).when(gradesListApi).getAll();
-
-        Vulcan vulcan = Mockito.mock(Vulcan.class);
-        Mockito.doReturn(gradesListApi).when(vulcan).getGradesList();
-
-        LoginSession loginSession = Mockito.mock(LoginSession.class);
-        Mockito.doReturn(vulcan).when(loginSession).getVulcan();
-        Mockito.doReturn(daoSession).when(loginSession).getDaoSession();
-        Mockito.doReturn(userId).when(loginSession).getUserId();
-
-        GradesSync gradesSync = new GradesSync();
-        gradesSync.sync(loginSession);
-
-        io.github.wulkanowy.db.dao.entities.Grade grade = daoSession.getGradeDao().load(1L);
-
-        Assert.assertNotNull(grade);
-        Assert.assertEquals(userId, grade.getUserId());
-        Assert.assertEquals(subjectId, grade.getSubjectId());
-        Assert.assertEquals("Matematyka", grade.getSubject());
-        Assert.assertEquals("5", grade.getValue());
-        Assert.assertFalse(grade.getIsNew());
-    }
-
-    @AfterClass
-    public static void cleanUp() {
-        daoSession.getAccountDao().deleteAll();
-        daoSession.getGradeDao().deleteAll();
-        daoSession.getSubjectDao().deleteAll();
-        daoSession.clear();
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/services/sync/SubjectSyncTest.java

@@ -1,82 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
-
-import org.greenrobot.greendao.database.Database;
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.Mockito;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import io.github.wulkanowy.api.Vulcan;
-import io.github.wulkanowy.api.grades.SubjectsList;
-import io.github.wulkanowy.db.dao.entities.DaoMaster;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.db.dao.entities.Subject;
-
-@RunWith(AndroidJUnit4.class)
-public class SubjectSyncTest {
-
-    private static DaoSession daoSession;
-
-    @BeforeClass
-    public static void setUpClass() {
-        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(InstrumentationRegistry.getTargetContext(), "wulkanowyTest-db");
-        Database database = devOpenHelper.getWritableDb();
-        daoSession = new DaoMaster(database).newSession();
-
-        DaoMaster.dropAllTables(database, true);
-        DaoMaster.createAllTables(database, true);
-    }
-
-    @Before
-    public void setUp() {
-        daoSession.getSubjectDao().deleteAll();
-        daoSession.clear();
-    }
-
-    @Test
-    public void syncSubjectTest() throws Exception {
-        List<io.github.wulkanowy.api.grades.Subject> subjectList = new ArrayList<>();
-        subjectList.add(new io.github.wulkanowy.api.grades.Subject()
-                .setName("Matematyka")
-                .setFinalRating("5")
-                .setPredictedRating("4"));
-
-        SubjectsList subjectsListApi = Mockito.mock(SubjectsList.class);
-        Mockito.doReturn(subjectList).when(subjectsListApi).getAll();
-
-        Vulcan vulcan = Mockito.mock(Vulcan.class);
-        Mockito.doReturn(subjectsListApi).when(vulcan).getSubjectsList();
-
-        LoginSession loginSession = Mockito.mock(LoginSession.class);
-        Mockito.doReturn(vulcan).when(loginSession).getVulcan();
-        Mockito.doReturn(2L).when(loginSession).getUserId();
-        Mockito.doReturn(daoSession).when(loginSession).getDaoSession();
-
-        SubjectsSync subjectsSync = new SubjectsSync();
-        subjectsSync.sync(loginSession);
-
-        Subject subject = daoSession.getSubjectDao().load(1L);
-
-        Assert.assertNotNull(subject);
-        Assert.assertEquals(2, subject.getUserId().longValue());
-        Assert.assertEquals("Matematyka", subject.getName());
-        Assert.assertEquals("5", subject.getFinalRating());
-        Assert.assertEquals("4", subject.getPredictedRating());
-
-    }
-
-    @AfterClass
-    public static void cleanUp() {
-        daoSession.getSubjectDao().deleteAll();
-        daoSession.clear();
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/services/sync/TimetableSyncTest.java

@@ -1,95 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.support.test.InstrumentationRegistry;
-import android.support.test.runner.AndroidJUnit4;
-
-import org.greenrobot.greendao.database.Database;
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import io.github.wulkanowy.api.Vulcan;
-import io.github.wulkanowy.api.timetable.Day;
-import io.github.wulkanowy.api.timetable.Lesson;
-import io.github.wulkanowy.api.timetable.Timetable;
-import io.github.wulkanowy.api.timetable.Week;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.DaoMaster;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-
-import static org.mockito.ArgumentMatchers.anyString;
-import static org.mockito.Mockito.doReturn;
-import static org.mockito.Mockito.mock;
-
-@RunWith(AndroidJUnit4.class)
-public class TimetableSyncTest {
-
-    private static DaoSession daoSession;
-
-    @BeforeClass
-    public static void setUpClass() {
-        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(InstrumentationRegistry.getTargetContext(), "wulkanowyTest-db");
-        Database database = devOpenHelper.getWritableDb();
-        daoSession = new DaoMaster(database).newSession();
-
-        DaoMaster.dropAllTables(database, true);
-        DaoMaster.createAllTables(database, true);
-    }
-
-    @Test
-    public void syncTimetableEmptyDatabaseTest() throws Exception {
-        Long userId = daoSession.getAccountDao().insert(new Account().setEmail("TEST@TEST"));
-
-        List<Day> dayList = new ArrayList<>();
-        dayList.add(new Day()
-                .setDate("20.12.2012")
-                .setLesson(new Lesson().setSubject("Matematyka").setRoom("20")));
-        Week week = new Week().setDays(dayList);
-
-        List<Day> nextDayList = new ArrayList<>();
-        dayList.add(new Day()
-                .setDate("24.11.2013")
-                .setLesson(new Lesson().setSubject("Matematyka").setRoom("22")));
-        Week nextWeek = new Week().setDays(nextDayList);
-
-        Timetable timetable = mock(Timetable.class);
-        doReturn(week).when(timetable).getWeekTable();
-        doReturn(nextWeek).when(timetable).getWeekTable(anyString());
-
-        Vulcan vulcan = mock(Vulcan.class);
-        doReturn(timetable).when(vulcan).getTimetable();
-
-        LoginSession loginSession = mock(LoginSession.class);
-        doReturn(vulcan).when(loginSession).getVulcan();
-        doReturn(daoSession).when(loginSession).getDaoSession();
-        doReturn(userId).when(loginSession).getUserId();
-
-        TimetableSync timetableSync = new TimetableSync();
-        timetableSync.sync(loginSession, null);
-
-        List<io.github.wulkanowy.db.dao.entities.Day> dayEntityList = daoSession.getDayDao().loadAll();
-        List<io.github.wulkanowy.db.dao.entities.Lesson> lessonEntityList = dayEntityList.get(0).getLessons();
-
-        Assert.assertNotNull(dayEntityList.get(0));
-        Assert.assertEquals(userId, dayEntityList.get(0).getUserId());
-        Assert.assertEquals(1L, lessonEntityList.get(0).getDayId().longValue());
-        Assert.assertEquals("Matematyka", lessonEntityList.get(0).getSubject());
-        Assert.assertEquals("20", lessonEntityList.get(0).getRoom());
-        Assert.assertEquals("20.12.2012", dayEntityList.get(0).getDate());
-
-    }
-
-    @AfterClass
-    public static void cleanUp() {
-        daoSession.getAccountDao().deleteAll();
-        daoSession.getDayDao().deleteAll();
-        daoSession.getLessonDao().deleteAll();
-        daoSession.getWeekDao().deleteAll();
-        daoSession.clear();
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/services/sync/VulcanSyncTest.java

@@ -1,30 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.support.test.runner.AndroidJUnit4;
-
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import java.io.IOException;
-
-@RunWith(AndroidJUnit4.class)
-public class VulcanSyncTest {
-
-    @Test(expected = IOException.class)
-    public void syncNoLoginSessionSubjectTest() throws IOException {
-        VulcanSync vulcanSync = new VulcanSync(new LoginSession());
-        vulcanSync.syncSubjectsAndGrades();
-    }
-
-    @Test(expected = IOException.class)
-    public void syncNoLoginSessionGradeTest() throws IOException {
-        VulcanSync vulcanSync = new VulcanSync(new LoginSession());
-        vulcanSync.syncGrades();
-    }
-
-    @Test(expected = IOException.class)
-    public void syncNoLoginSessionTimetableTest() throws IOException {
-        VulcanSync vulcanSync = new VulcanSync(new LoginSession());
-        vulcanSync.syncTimetable();
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/utils/security/SafetyTest.java

@@ -1,25 +0,0 @@
-package io.github.wulkanowy.utils.security;
-
-import android.content.Context;
-import android.support.test.InstrumentationRegistry;
-import android.support.test.filters.SdkSuppress;
-import android.support.test.filters.SmallTest;
-import android.support.test.runner.AndroidJUnit4;
-
-import org.junit.Assert;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-@SmallTest
-@RunWith(AndroidJUnit4.class)
-public class SafetyTest {
-
-    @Test
-    @SdkSuppress(minSdkVersion = 18)
-    public void encryptDecryptTest() throws Exception {
-        Context targetContext = InstrumentationRegistry.getTargetContext();
-
-        Safety safety = new Safety();
-        Assert.assertEquals("PASS", safety.decrypt("TEST", safety.encrypt("TEST", "PASS", targetContext)));
-    }
-}

app/src/androidTest/java/io/github/wulkanowy/utils/security/ScramblerTest.java

@@ -1,59 +1,25 @@
 package io.github.wulkanowy.utils.security;
 
 import android.content.Context;
-import android.os.Build;
 import android.support.test.InstrumentationRegistry;
 import android.support.test.filters.SdkSuppress;
 import android.support.test.filters.SmallTest;
 import android.support.test.runner.AndroidJUnit4;
 
 import org.junit.Assert;
-import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 @SmallTest
-@SdkSuppress(minSdkVersion = 18)
 @RunWith(AndroidJUnit4.class)
 public class ScramblerTest {
 
-    private Context targetContext;
-
-    private Scrambler scramblerLoad = new Scrambler();
-
-    @Before
-    public void setUp() throws CryptoException {
-        targetContext = InstrumentationRegistry.getTargetContext();
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
-            scramblerLoad.loadKeyStore();
-        }
-    }
-
-    @Test(expected = CryptoException.class)
-    @SdkSuppress(maxSdkVersion = 17)
-    public void testNoSuchAlgorithm() throws CryptoException {
-        scramblerLoad.loadKeyStore();
-    }
-
     @Test
-    public void decryptEncryptStringTest() throws CryptoException {
+    @SdkSuppress(minSdkVersion = 18)
-        scramblerLoad.generateNewKey("TEST", targetContext);
+    public void encryptDecryptTest() throws Exception {
-        Assert.assertEquals("pass",
+        Context targetContext = InstrumentationRegistry.getTargetContext();
-                scramblerLoad.decryptString("TEST", scramblerLoad.encryptString("TEST", "pass")));
-    }
 
-    @Test(expected = CryptoException.class)
+        Assert.assertEquals("PASS", Scrambler.decrypt("TEST",
-    public void decryptEmptyTest() throws CryptoException {
+                Scrambler.encrypt("TEST", "PASS", targetContext)));
-        scramblerLoad.decryptString("", "");
-    }
-
-    @Test(expected = CryptoException.class)
-    public void encryptEmptyTest() throws CryptoException {
-        scramblerLoad.encryptString("", "");
-    }
-
-    @Test(expected = CryptoException.class)
-    public void generateNewKeyEmptyTest() throws CryptoException {
-        scramblerLoad.generateNewKey("", targetContext);
     }
 }

app/src/main/AndroidManifest.xml

@@ -1,6 +1,5 @@
 <?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="io.github.wulkanowy"
     android:installLocation="internalOnly">
 
@@ -11,8 +10,6 @@
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
 
-    <uses-sdk tools:overrideLibrary="com.thoughtbot.expandablerecyclerview" />
-
     <application
         android:name=".WulkanowyApp"
         android:allowBackup="false"
@@ -25,7 +22,7 @@
             android:name=".ui.splash.SplashActivity"
             android:configChanges="orientation|screenSize"
             android:noHistory="true"
-            android:theme="@style/WulkanowyTheme.noActionBar">
+            android:theme="@style/WulkanowyTheme.SplashTheme">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -38,12 +35,12 @@
             android:label="@string/title_activity_login"
             android:windowSoftInputMode="adjustResize" />
         <activity
-            android:name=".ui.main.DashboardActivity"
+            android:name=".ui.main.MainActivity"
             android:configChanges="orientation|screenSize"
             android:label="@string/activity_dashboard_text" />
 
         <service
-            android:name=".services.jobs.FullSyncJob$SyncService"
+            android:name=".services.SyncJob"
             android:exported="false">
             <intent-filter>
                 <action android:name="com.firebase.jobdispatcher.ACTION_EXECUTE" />

app/src/main/java/io/github/wulkanowy/WulkanowyApp.java

@@ -1,50 +1,48 @@
 package io.github.wulkanowy;
 
 import android.app.Application;
-import android.content.Context;
-import android.content.SharedPreferences;
 
 import com.crashlytics.android.Crashlytics;
 import com.crashlytics.android.core.CrashlyticsCore;
 
 import org.greenrobot.greendao.query.QueryBuilder;
 
+import javax.inject.Inject;
+
 import eu.davidea.flexibleadapter.FlexibleAdapter;
 import eu.davidea.flexibleadapter.utils.Log;
 import io.fabric.sdk.android.Fabric;
-import io.github.wulkanowy.db.dao.entities.DaoMaster;
+import io.github.wulkanowy.data.RepositoryContract;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.di.component.ApplicationComponent;
+import io.github.wulkanowy.di.component.DaggerApplicationComponent;
+import io.github.wulkanowy.di.modules.ApplicationModule;
 
 public class WulkanowyApp extends Application {
 
-    public static final String DEBUG_TAG = "WulaknowyActivity";
+    protected ApplicationComponent applicationComponent;
 
-    private DaoSession daoSession;
+    @Inject
+    RepositoryContract repository;
 
     @Override
     public void onCreate() {
         super.onCreate();
+        applicationComponent = DaggerApplicationComponent
+                .builder()
+                .applicationModule(new ApplicationModule(this))
+                .build();
+        applicationComponent.inject(this);
 
+        initializeFabric();
         if (BuildConfig.DEBUG) {
             enableDebugLog();
         }
 
-        initializeFabric();
-
-        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(this, "wulkanowy-db");
-
-        daoSession = new DaoMaster(devOpenHelper.getWritableDb()).newSession();
-
-        int schemaVersion = getSharedPreferences("LoginData", Context.MODE_PRIVATE).getInt("schemaVersion", 0);
-
-        if (DaoMaster.SCHEMA_VERSION != schemaVersion) {
-            SharedPreferences sharedPreferences = getSharedPreferences("LoginData", Context.MODE_PRIVATE);
-            SharedPreferences.Editor editor = sharedPreferences.edit();
-            editor.putLong("userId", 0);
-            editor.putInt("schemaVersion", DaoMaster.SCHEMA_VERSION);
-            editor.apply();
     }
 
+    public ApplicationComponent getApplicationComponent() {
+        return applicationComponent;
     }
 
     private void enableDebugLog() {
@@ -62,6 +60,6 @@ public class WulkanowyApp extends Application {
     }
 
     public DaoSession getDaoSession() {
-        return daoSession;
+        return null;
     }
 }

app/src/main/java/io/github/wulkanowy/data/Repository.java

@@ -0,0 +1,143 @@
+package io.github.wulkanowy.data;
+
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.util.List;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.api.login.VulcanOfflineException;
+import io.github.wulkanowy.data.db.dao.entities.Account;
+import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.data.db.dao.entities.GradeDao;
+import io.github.wulkanowy.data.db.dao.entities.Week;
+import io.github.wulkanowy.data.db.dao.entities.WeekDao;
+import io.github.wulkanowy.data.db.resources.ResourcesContract;
+import io.github.wulkanowy.data.db.shared.SharedPrefContract;
+import io.github.wulkanowy.data.sync.SyncContract;
+import io.github.wulkanowy.data.sync.login.LoginSyncContract;
+import io.github.wulkanowy.data.sync.timetable.TimetableSyncContract;
+import io.github.wulkanowy.di.annotations.SyncGrades;
+import io.github.wulkanowy.di.annotations.SyncSubjects;
+import io.github.wulkanowy.utils.security.CryptoException;
+
+@Singleton
+public class Repository implements RepositoryContract {
+
+    private final SharedPrefContract sharedPref;
+
+    private final ResourcesContract resources;
+
+    private final DaoSession daoSession;
+
+    private final LoginSyncContract loginSync;
+
+    private final TimetableSyncContract timetableSync;
+
+    private final SyncContract gradeSync;
+
+    private final SyncContract subjectSync;
+
+    @Inject
+    Repository(SharedPrefContract sharedPref,
+               ResourcesContract resources,
+               DaoSession daoSession,
+               LoginSyncContract loginSync,
+               TimetableSyncContract timetableSync,
+               @SyncGrades SyncContract gradeSync,
+               @SyncSubjects SyncContract subjectSync) {
+        this.sharedPref = sharedPref;
+        this.resources = resources;
+        this.daoSession = daoSession;
+        this.loginSync = loginSync;
+        this.timetableSync = timetableSync;
+        this.gradeSync = gradeSync;
+        this.subjectSync = subjectSync;
+    }
+
+    @Override
+    public long getCurrentUserId() {
+        return sharedPref.getCurrentUserId();
+    }
+
+    @Override
+    public String[] getSymbolsKeysArray() {
+        return resources.getSymbolsKeysArray();
+    }
+
+    @Override
+    public String[] getSymbolsValuesArray() {
+        return resources.getSymbolsValuesArray();
+    }
+
+    @Override
+    public String getErrorLoginMessage(Exception e) {
+        return resources.getErrorLoginMessage(e);
+    }
+
+    @Override
+    public void loginUser(String email, String password, String symbol)
+            throws NotLoggedInErrorException, AccountPermissionException, IOException,
+            CryptoException, VulcanOfflineException, BadCredentialsException {
+        loginSync.loginUser(email, password, symbol);
+    }
+
+    @Override
+    public void loginCurrentUser() throws NotLoggedInErrorException, AccountPermissionException,
+            IOException, CryptoException, VulcanOfflineException, BadCredentialsException {
+        loginSync.loginCurrentUser();
+    }
+
+    @Override
+    public void syncGrades() throws NotLoggedInErrorException, IOException, ParseException {
+        gradeSync.sync();
+    }
+
+    @Override
+    public void syncSubjects() throws NotLoggedInErrorException, IOException, ParseException {
+        subjectSync.sync();
+    }
+
+    @Override
+    public void syncTimetable() throws NotLoggedInErrorException, IOException, ParseException {
+        timetableSync.syncTimetable();
+    }
+
+    @Override
+    public void syncTimetable(String date) throws NotLoggedInErrorException, IOException, ParseException {
+        timetableSync.syncTimetable(date);
+    }
+
+    @Override
+    public void syncAll() throws NotLoggedInErrorException, IOException, ParseException {
+        syncSubjects();
+        syncGrades();
+        syncTimetable();
+    }
+
+    @Override
+    public Account getCurrentUser() {
+        return daoSession.getAccountDao().load(sharedPref.getCurrentUserId());
+    }
+
+    @Override
+    public Week getWeek(String date) {
+        return daoSession.getWeekDao().queryBuilder()
+                .where(WeekDao.Properties.StartDayDate.eq(date),
+                        WeekDao.Properties.UserId.eq(getCurrentUserId()))
+                .unique();
+    }
+
+    @Override
+    public List<Grade> getNewGrades() {
+        return daoSession.getGradeDao().queryBuilder()
+                .where(GradeDao.Properties.IsNew.eq(1))
+                .list();
+    }
+}

app/src/main/java/io/github/wulkanowy/data/RepositoryContract.java

@@ -0,0 +1,34 @@
+package io.github.wulkanowy.data;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.util.List;
+
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.data.db.dao.entities.Account;
+import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.data.db.dao.entities.Week;
+import io.github.wulkanowy.data.db.resources.ResourcesContract;
+import io.github.wulkanowy.data.sync.login.LoginSyncContract;
+import io.github.wulkanowy.data.sync.timetable.TimetableSyncContract;
+
+@Singleton
+public interface RepositoryContract extends ResourcesContract, LoginSyncContract,
+        TimetableSyncContract {
+
+    long getCurrentUserId();
+
+    void syncGrades() throws NotLoggedInErrorException, IOException, ParseException;
+
+    void syncSubjects() throws NotLoggedInErrorException, IOException, ParseException;
+
+    void syncAll() throws NotLoggedInErrorException, IOException, ParseException;
+
+    Account getCurrentUser();
+
+    Week getWeek(String date);
+
+    List<Grade> getNewGrades();
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java

@@ -0,0 +1,19 @@
+package io.github.wulkanowy.data.db.dao;
+
+import android.content.Context;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.data.db.dao.entities.DaoMaster;
+import io.github.wulkanowy.di.annotations.ApplicationContext;
+import io.github.wulkanowy.di.annotations.DatabaseInfo;
+
+@Singleton
+public class DbHelper extends DaoMaster.DevOpenHelper {
+
+    @Inject
+    DbHelper(@ApplicationContext Context context, @DatabaseInfo String dbName) {
+        super(context, dbName);
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Account.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.DaoException;
 import org.greenrobot.greendao.annotation.Entity;

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Day.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.DaoException;
 import org.greenrobot.greendao.annotation.Entity;

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Grade.java

@@ -1,7 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
-
-import android.os.Parcel;
-import android.os.Parcelable;
 
 import org.apache.commons.lang3.builder.EqualsBuilder;
 import org.apache.commons.lang3.builder.HashCodeBuilder;
@@ -11,13 +8,15 @@ import org.greenrobot.greendao.annotation.Generated;
 import org.greenrobot.greendao.annotation.Id;
 import org.greenrobot.greendao.annotation.Property;
 
+import java.io.Serializable;
+
 import io.github.wulkanowy.R;
 
 @Entity(
         nameInDb = "Grades",
         active = true
 )
-public class Grade implements Parcelable {
+public class Grade implements Serializable {
 
     @Id(autoincrement = true)
     protected Long id;
@@ -61,9 +60,7 @@ public class Grade implements Parcelable {
     @Property(nameInDb = "READ")
     private boolean read = true;
 
-    protected Grade(Parcel source) {
+    private static final long serialVersionUID = 42L;
-        value = source.readString();
-    }
 
     @Generated(hash = 568899968)
     public Grade(Long id, Long subjectId, Long userId, String subject, String value,
@@ -90,36 +87,6 @@ public class Grade implements Parcelable {
     public Grade() {
     }
 
-    @Override
-    public int describeContents() {
-        return 0;
-    }
-
-    @Override
-    public void writeToParcel(Parcel parcel, int i) {
-        parcel.writeString(subject);
-        parcel.writeString(value);
-        parcel.writeString(color);
-        parcel.writeString(symbol);
-        parcel.writeString(description);
-        parcel.writeString(weight);
-        parcel.writeString(date);
-        parcel.writeString(teacher);
-        parcel.writeString(semester);
-    }
-
-    public static final Creator<Grade> CREATOR = new Creator<Grade>() {
-        @Override
-        public Grade createFromParcel(Parcel source) {
-            return new Grade(source);
-        }
-
-        @Override
-        public Grade[] newArray(int size) {
-            return new Grade[size];
-        }
-    };
-
     /**
      * Used to resolve relations
      */

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Lesson.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.DaoException;
 import org.greenrobot.greendao.annotation.Entity;
@@ -7,12 +7,14 @@ import org.greenrobot.greendao.annotation.Id;
 import org.greenrobot.greendao.annotation.Index;
 import org.greenrobot.greendao.annotation.Property;
 
+import java.io.Serializable;
+
 @Entity(
         nameInDb = "Lessons",
         active = true,
-        indexes ={@Index(value = "dayId,date,startTime,endTime", unique = true)}
+        indexes = {@Index(value = "dayId,date,startTime,endTime", unique = true)}
 )
-public class Lesson {
+public class Lesson implements Serializable {
 
     @Id(autoincrement = true)
     private Long id;
@@ -65,6 +67,8 @@ public class Lesson {
     @Property(nameInDb = "IS_NEW_MOVED_IN_CANCELED")
     private boolean isNewMovedInOrChanged = false;
 
+    private static final long serialVersionUID = 42L;
+
     /**
      * Used to resolve relations
      */

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Subject.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.DaoException;
 import org.greenrobot.greendao.annotation.Entity;

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Week.java

@@ -1,4 +1,4 @@
-package io.github.wulkanowy.db.dao.entities;
+package io.github.wulkanowy.data.db.dao.entities;
 
 import org.greenrobot.greendao.DaoException;
 import org.greenrobot.greendao.annotation.Entity;

app/src/main/java/io/github/wulkanowy/data/db/resources/AppResources.java

@@ -0,0 +1,59 @@
+package io.github.wulkanowy.data.db.resources;
+
+import android.content.Context;
+import android.content.res.Resources;
+
+import java.io.IOException;
+import java.net.SocketTimeoutException;
+import java.net.UnknownHostException;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.api.login.VulcanOfflineException;
+import io.github.wulkanowy.di.annotations.ApplicationContext;
+import io.github.wulkanowy.utils.AppConstant;
+import io.github.wulkanowy.utils.LogUtils;
+import io.github.wulkanowy.utils.security.CryptoException;
+
+@Singleton
+public class AppResources implements ResourcesContract {
+
+    private Resources resources;
+
+    @Inject
+    AppResources(@ApplicationContext Context context) {
+        resources = context.getResources();
+    }
+
+    @Override
+    public String[] getSymbolsKeysArray() {
+        return resources.getStringArray(R.array.symbols);
+    }
+
+    @Override
+    public String[] getSymbolsValuesArray() {
+        return resources.getStringArray(R.array.symbols_values);
+    }
+
+    @Override
+    public String getErrorLoginMessage(Exception exception) {
+        LogUtils.error(AppConstant.APP_NAME + " encountered a error", exception);
+
+        if (exception instanceof CryptoException) {
+            return resources.getString(R.string.encrypt_failed_text);
+        } else if (exception instanceof UnknownHostException) {
+            return resources.getString(R.string.noInternet_text);
+        } else if (exception instanceof SocketTimeoutException) {
+            return resources.getString(R.string.generic_timeout_error);
+        } else if (exception instanceof NotLoggedInErrorException || exception instanceof IOException) {
+            return resources.getString(R.string.login_denied_text);
+        } else if (exception instanceof VulcanOfflineException) {
+            return resources.getString(R.string.error_host_offline);
+        } else {
+            return exception.getMessage();
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/resources/ResourcesContract.java

@@ -0,0 +1,10 @@
+package io.github.wulkanowy.data.db.resources;
+
+public interface ResourcesContract {
+
+    String[] getSymbolsKeysArray();
+
+    String[] getSymbolsValuesArray();
+
+    String getErrorLoginMessage(Exception e);
+}

app/src/main/java/io/github/wulkanowy/data/db/shared/SharedPref.java

@@ -0,0 +1,33 @@
+package io.github.wulkanowy.data.db.shared;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.di.annotations.ApplicationContext;
+import io.github.wulkanowy.di.annotations.SharedPreferencesInfo;
+
+@Singleton
+public class SharedPref implements SharedPrefContract {
+
+    private static final String SHARED_KEY_USER_ID = "USER_ID";
+
+    private final SharedPreferences sharedPreferences;
+
+    @Inject
+    SharedPref(@ApplicationContext Context context, @SharedPreferencesInfo String sharedName) {
+        sharedPreferences = context.getSharedPreferences(sharedName, Context.MODE_PRIVATE);
+    }
+
+    @Override
+    public long getCurrentUserId() {
+        return sharedPreferences.getLong(SHARED_KEY_USER_ID, 0);
+    }
+
+    @Override
+    public void setCurrentUserId(long userId) {
+        sharedPreferences.edit().putLong(SHARED_KEY_USER_ID, userId).apply();
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/shared/SharedPrefContract.java

@@ -0,0 +1,8 @@
+package io.github.wulkanowy.data.db.shared;
+
+public interface SharedPrefContract {
+
+    long getCurrentUserId();
+
+    void setCurrentUserId(long userId);
+}

app/src/main/java/io/github/wulkanowy/data/sync/SyncContract.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.data.sync;
+
+import java.io.IOException;
+import java.text.ParseException;
+
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+
+public interface SyncContract {
+
+    void sync() throws NotLoggedInErrorException, IOException, ParseException;
+}

app/src/main/java/io/github/wulkanowy/data/sync/grades/GradeSync.java

@@ -0,0 +1,72 @@
+package io.github.wulkanowy.data.sync.grades;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.api.Vulcan;
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.data.db.dao.entities.Account;
+import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.data.db.dao.entities.SubjectDao;
+import io.github.wulkanowy.data.db.shared.SharedPrefContract;
+import io.github.wulkanowy.data.sync.SyncContract;
+import io.github.wulkanowy.utils.DataObjectConverter;
+import io.github.wulkanowy.utils.EntitiesCompare;
+import io.github.wulkanowy.utils.LogUtils;
+
+@Singleton
+public class GradeSync implements SyncContract {
+
+    private final DaoSession daoSession;
+
+    private final Vulcan vulcan;
+
+    private final SharedPrefContract sharedPref;
+
+    @Inject
+    GradeSync(DaoSession daoSession, SharedPrefContract sharedPref, Vulcan vulcan) {
+        this.daoSession = daoSession;
+        this.sharedPref = sharedPref;
+        this.vulcan = vulcan;
+    }
+
+    @Override
+    public void sync() throws IOException, NotLoggedInErrorException, ParseException {
+
+        long userId = sharedPref.getCurrentUserId();
+
+        Account account = daoSession.getAccountDao().load(userId);
+        account.resetGradeList();
+        account.resetSubjectList();
+
+        List<Grade> gradesFromNet = DataObjectConverter
+                .gradesToGradeEntities(vulcan.getGradesList().getAll());
+        List<Grade> gradesFromDb = account.getGradeList();
+
+        List<Grade> updatedGrades = EntitiesCompare.compareGradeList(gradesFromNet, gradesFromDb);
+
+        daoSession.getGradeDao().deleteInTx(gradesFromDb);
+
+        List<Grade> lastList = new ArrayList<>();
+
+        for (Grade grade : updatedGrades) {
+            grade.setUserId(userId);
+            grade.setSubjectId(daoSession.getSubjectDao().queryBuilder()
+                    .where(SubjectDao.Properties.Name.eq(grade.getSubject()),
+                            SubjectDao.Properties.UserId.eq(userId))
+                    .build()
+                    .uniqueOrThrow().getId());
+            lastList.add(grade);
+        }
+
+        daoSession.getGradeDao().insertInTx(lastList);
+
+        LogUtils.debug("Synchronization grades (amount = " + lastList.size() + ")");
+    }
+}

app/src/main/java/io/github/wulkanowy/data/sync/login/LoginSync.java

@@ -0,0 +1,81 @@
+package io.github.wulkanowy.data.sync.login;
+
+import android.content.Context;
+
+import java.io.IOException;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.api.Vulcan;
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.api.login.VulcanOfflineException;
+import io.github.wulkanowy.data.db.dao.entities.Account;
+import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.shared.SharedPrefContract;
+import io.github.wulkanowy.di.annotations.ApplicationContext;
+import io.github.wulkanowy.utils.LogUtils;
+import io.github.wulkanowy.utils.security.CryptoException;
+import io.github.wulkanowy.utils.security.Scrambler;
+
+@Singleton
+public class LoginSync implements LoginSyncContract {
+
+    private final DaoSession daoSession;
+
+    private final SharedPrefContract sharedPref;
+
+    private final Vulcan vulcan;
+
+    private final Context context;
+
+    @Inject
+    LoginSync(DaoSession daoSession, SharedPrefContract sharedPref,
+              Vulcan vulcan, @ApplicationContext Context context) {
+        this.daoSession = daoSession;
+        this.sharedPref = sharedPref;
+        this.vulcan = vulcan;
+        this.context = context;
+    }
+
+    @Override
+    public void loginUser(String email, String password, String symbol)
+            throws NotLoggedInErrorException, AccountPermissionException, IOException,
+            CryptoException, VulcanOfflineException, BadCredentialsException {
+
+        LogUtils.debug("Login new user email=" + email);
+
+        vulcan.login(email, password, symbol);
+
+        Account account = new Account()
+                .setName(vulcan.getBasicInformation().getPersonalData().getFirstAndLastName())
+                .setEmail(email)
+                .setPassword(Scrambler.encrypt(email, password, context))
+                .setSymbol(vulcan.getSymbol())
+                .setSnpId(vulcan.getStudentAndParent().getId());
+
+        sharedPref.setCurrentUserId(daoSession.getAccountDao().insert(account));
+    }
+
+    @Override
+    public void loginCurrentUser() throws NotLoggedInErrorException, AccountPermissionException,
+            IOException, CryptoException, VulcanOfflineException, BadCredentialsException {
+
+        long userId = sharedPref.getCurrentUserId();
+
+        if (userId == 0) {
+            throw new IOException("Can't find logged user");
+        }
+
+        LogUtils.debug("Login current user id=" + userId);
+
+        Account account = daoSession.getAccountDao().load(userId);
+
+        vulcan.login(account.getEmail(),
+                Scrambler.decrypt(account.getEmail(), account.getPassword()),
+                account.getSymbol(),
+                account.getSnpId());
+    }
+}

app/src/main/java/io/github/wulkanowy/data/sync/login/LoginSyncContract.java

@@ -0,0 +1,19 @@
+package io.github.wulkanowy.data.sync.login;
+
+import java.io.IOException;
+
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.api.login.VulcanOfflineException;
+import io.github.wulkanowy.utils.security.CryptoException;
+
+public interface LoginSyncContract {
+
+    void loginUser(String email, String password, String symbol)
+            throws NotLoggedInErrorException, AccountPermissionException, IOException,
+            CryptoException, VulcanOfflineException, BadCredentialsException;
+
+    void loginCurrentUser() throws NotLoggedInErrorException, AccountPermissionException, IOException,
+            CryptoException, VulcanOfflineException, BadCredentialsException;
+}

app/src/main/java/io/github/wulkanowy/data/sync/subjects/SubjectSync.java

@@ -0,0 +1,61 @@
+package io.github.wulkanowy.data.sync.subjects;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.api.Vulcan;
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.dao.entities.Subject;
+import io.github.wulkanowy.data.db.dao.entities.SubjectDao;
+import io.github.wulkanowy.data.db.shared.SharedPrefContract;
+import io.github.wulkanowy.data.sync.SyncContract;
+import io.github.wulkanowy.utils.DataObjectConverter;
+import io.github.wulkanowy.utils.LogUtils;
+
+@Singleton
+public class SubjectSync implements SyncContract {
+
+    private final SubjectDao subjectDao;
+
+    private final Vulcan vulcan;
+
+    private final SharedPrefContract sharedPref;
+
+    @Inject
+    SubjectSync(DaoSession daoSession, SharedPrefContract sharedPref, Vulcan vulcan) {
+        this.subjectDao = daoSession.getSubjectDao();
+        this.sharedPref = sharedPref;
+        this.vulcan = vulcan;
+    }
+
+    @Override
+    public void sync() throws NotLoggedInErrorException, IOException, ParseException {
+
+        long userId = sharedPref.getCurrentUserId();
+
+        List<Subject> subjectsFromNet = DataObjectConverter
+                .subjectsToSubjectEntities(vulcan.getSubjectsList().getAll());
+
+        subjectDao.deleteInTx(subjectDao.queryBuilder()
+                .where(SubjectDao.Properties.UserId.eq(userId))
+                .build()
+                .list());
+
+        List<Subject> lastList = new ArrayList<>();
+
+        for (Subject subject : subjectsFromNet) {
+            subject.setUserId(userId);
+            lastList.add(subject);
+        }
+
+        subjectDao.insertInTx(lastList);
+
+        LogUtils.debug("Synchronization subjects (amount = " + lastList.size() + ")");
+    }
+}

app/src/main/java/io/github/wulkanowy/data/sync/timetable/TimetableSync.java

@@ -0,0 +1,119 @@
+package io.github.wulkanowy.data.sync.timetable;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.inject.Inject;
+import javax.inject.Singleton;
+
+import io.github.wulkanowy.api.Vulcan;
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.dao.entities.Day;
+import io.github.wulkanowy.data.db.dao.entities.DayDao;
+import io.github.wulkanowy.data.db.dao.entities.Lesson;
+import io.github.wulkanowy.data.db.dao.entities.LessonDao;
+import io.github.wulkanowy.data.db.dao.entities.Week;
+import io.github.wulkanowy.data.db.dao.entities.WeekDao;
+import io.github.wulkanowy.data.db.shared.SharedPrefContract;
+import io.github.wulkanowy.utils.DataObjectConverter;
+import io.github.wulkanowy.utils.LogUtils;
+import io.github.wulkanowy.utils.TimeUtils;
+
+@Singleton
+public class TimetableSync implements TimetableSyncContract {
+
+    private final DaoSession daoSession;
+
+    private final Vulcan vulcan;
+
+    private final SharedPrefContract sharedPref;
+
+    @Inject
+    TimetableSync(DaoSession daoSession, SharedPrefContract sharedPref, Vulcan vulcan) {
+        this.daoSession = daoSession;
+        this.sharedPref = sharedPref;
+        this.vulcan = vulcan;
+    }
+
+    @Override
+    public void syncTimetable(String date) throws NotLoggedInErrorException, IOException, ParseException {
+        long userId = sharedPref.getCurrentUserId();
+
+        io.github.wulkanowy.api.timetable.Week weekFromNet = date == null ? vulcan.getTimetable().getWeekTable()
+                : vulcan.getTimetable().getWeekTable(String.valueOf(TimeUtils.getNetTicks(date)));
+
+        Week weekFromDb = daoSession.getWeekDao().queryBuilder()
+                .where(WeekDao.Properties.UserId.eq(userId),
+                        WeekDao.Properties.StartDayDate.eq(weekFromNet.getStartDayDate()))
+                .unique();
+
+        Long weekId;
+
+        if (weekFromDb == null) {
+            Week weekFromNetEntity = DataObjectConverter.weekToWeekEntity(weekFromNet).setUserId(userId);
+            weekId = daoSession.getWeekDao().insert(weekFromNetEntity);
+        } else {
+            weekId = weekFromDb.getId();
+        }
+
+        List<io.github.wulkanowy.api.timetable.Day> dayListFromNet = weekFromNet.getDays();
+
+        List<Lesson> updatedLessonList = new ArrayList<>();
+
+        for (io.github.wulkanowy.api.timetable.Day dayFromNet : dayListFromNet) {
+            Day dayFromNetEntity = DataObjectConverter.dayToDayEntity(dayFromNet);
+
+            Day dayFromDb = daoSession.getDayDao().queryBuilder()
+                    .where(DayDao.Properties.UserId.eq(userId),
+                            DayDao.Properties.WeekId.eq(weekId),
+                            DayDao.Properties.Date.eq(dayFromNetEntity.getDate()))
+                    .unique();
+
+            dayFromNetEntity.setUserId(userId);
+            dayFromNetEntity.setWeekId(weekId);
+
+            Long dayId;
+
+            if (dayFromDb != null) {
+                dayFromNetEntity.setId(dayFromDb.getId());
+                daoSession.getDayDao().save(dayFromNetEntity);
+                dayId = dayFromNetEntity.getId();
+            } else {
+                dayId = daoSession.getDayDao().insert(dayFromNetEntity);
+            }
+
+            List<Lesson> lessonListFromNetEntities = DataObjectConverter
+                    .lessonsToLessonsEntities(dayFromNet.getLessons());
+
+            for (Lesson lessonFromNetEntity : lessonListFromNetEntities) {
+                Lesson lessonFromDb = daoSession.getLessonDao().queryBuilder()
+                        .where(LessonDao.Properties.DayId.eq(dayId),
+                                LessonDao.Properties.Date.eq(lessonFromNetEntity.getDate()),
+                                LessonDao.Properties.StartTime.eq(lessonFromNetEntity.getStartTime()),
+                                LessonDao.Properties.EndTime.eq(lessonFromNetEntity.getEndTime()))
+                        .unique();
+
+                if (lessonFromDb != null) {
+                    lessonFromNetEntity.setId(lessonFromDb.getId());
+                }
+
+                lessonFromNetEntity.setDayId(dayFromNetEntity.getId());
+
+                if (!"".equals(lessonFromNetEntity.getSubject())) {
+                    updatedLessonList.add(lessonFromNetEntity);
+                }
+            }
+        }
+        daoSession.getLessonDao().saveInTx(updatedLessonList);
+
+        LogUtils.debug("Synchronization lessons (amount = " + updatedLessonList.size() + ")");
+    }
+
+    @Override
+    public void syncTimetable() throws NotLoggedInErrorException, IOException, ParseException {
+        syncTimetable(null);
+    }
+}

app/src/main/java/io/github/wulkanowy/data/sync/timetable/TimetableSyncContract.java

@@ -0,0 +1,13 @@
+package io.github.wulkanowy.data.sync.timetable;
+
+import java.io.IOException;
+import java.text.ParseException;
+
+import io.github.wulkanowy.api.login.NotLoggedInErrorException;
+
+public interface TimetableSyncContract {
+
+    void syncTimetable(String date) throws NotLoggedInErrorException, IOException, ParseException;
+
+    void syncTimetable() throws NotLoggedInErrorException, IOException, ParseException;
+}

app/src/main/java/io/github/wulkanowy/db/dao/DatabaseAccess.java

@@ -1,20 +0,0 @@
-package io.github.wulkanowy.db.dao;
-
-import org.greenrobot.greendao.query.Query;
-
-import java.util.List;
-
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.db.dao.entities.Grade;
-import io.github.wulkanowy.db.dao.entities.GradeDao;
-
-public class DatabaseAccess {
-
-    public List<Grade> getNewGrades(DaoSession daoSession) {
-        Query<Grade> gradeQuery = daoSession.getGradeDao().queryBuilder()
-                .where(GradeDao.Properties.IsNew.eq(1))
-                .build();
-
-        return gradeQuery.list();
-    }
-}

app/src/main/java/io/github/wulkanowy/di/annotations/ActivityContext.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ActivityContext {
+}

app/src/main/java/io/github/wulkanowy/di/annotations/ApplicationContext.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface ApplicationContext {
+}

app/src/main/java/io/github/wulkanowy/di/annotations/DatabaseInfo.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface DatabaseInfo {
+}

app/src/main/java/io/github/wulkanowy/di/annotations/PerActivity.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Scope;
+
+@Scope
+@Retention(RetentionPolicy.RUNTIME)
+public @interface PerActivity {
+}

app/src/main/java/io/github/wulkanowy/di/annotations/PerFragment.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Scope;
+
+@Scope
+@Retention(RetentionPolicy.RUNTIME)
+public @interface PerFragment {
+}

app/src/main/java/io/github/wulkanowy/di/annotations/SharedPreferencesInfo.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface SharedPreferencesInfo {
+}

app/src/main/java/io/github/wulkanowy/di/annotations/SyncGrades.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface SyncGrades {
+}

app/src/main/java/io/github/wulkanowy/di/annotations/SyncSubjects.java

@@ -0,0 +1,11 @@
+package io.github.wulkanowy.di.annotations;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+public @interface SyncSubjects {
+}

app/src/main/java/io/github/wulkanowy/di/component/ActivityComponent.java

@@ -0,0 +1,19 @@
+package io.github.wulkanowy.di.component;
+
+import dagger.Component;
+import io.github.wulkanowy.di.annotations.PerActivity;
+import io.github.wulkanowy.di.modules.ActivityModule;
+import io.github.wulkanowy.ui.login.LoginActivity;
+import io.github.wulkanowy.ui.main.MainActivity;
+import io.github.wulkanowy.ui.splash.SplashActivity;
+
+@PerActivity
+@Component(dependencies = ApplicationComponent.class, modules = ActivityModule.class)
+public interface ActivityComponent {
+
+    void inject(SplashActivity splashActivity);
+
+    void inject(LoginActivity loginActivity);
+
+    void inject(MainActivity mainActivity);
+}

app/src/main/java/io/github/wulkanowy/di/component/ApplicationComponent.java

@@ -0,0 +1,26 @@
+package io.github.wulkanowy.di.component;
+
+import android.content.Context;
+
+import javax.inject.Singleton;
+
+import dagger.Component;
+import io.github.wulkanowy.WulkanowyApp;
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.di.annotations.ApplicationContext;
+import io.github.wulkanowy.di.modules.ApplicationModule;
+import io.github.wulkanowy.services.SyncJob;
+
+@Singleton
+@Component(modules = ApplicationModule.class)
+public interface ApplicationComponent {
+
+    @ApplicationContext
+    Context getContext();
+
+    RepositoryContract getRepository();
+
+    void inject(WulkanowyApp wulkanowyApp);
+
+    void inject(SyncJob syncJob);
+}

app/src/main/java/io/github/wulkanowy/di/component/FragmentComponent.java

@@ -0,0 +1,25 @@
+package io.github.wulkanowy.di.component;
+
+import dagger.Component;
+import io.github.wulkanowy.di.annotations.PerFragment;
+import io.github.wulkanowy.di.modules.FragmentModule;
+import io.github.wulkanowy.ui.main.attendance.AttendanceFragment;
+import io.github.wulkanowy.ui.main.dashboard.DashboardFragment;
+import io.github.wulkanowy.ui.main.grades.GradesFragment;
+import io.github.wulkanowy.ui.main.timetable.TimetableFragment;
+import io.github.wulkanowy.ui.main.timetable.TimetableTabFragment;
+
+@PerFragment
+@Component(dependencies = ApplicationComponent.class, modules = FragmentModule.class)
+public interface FragmentComponent {
+
+    void inject(GradesFragment gradesFragment);
+
+    void inject(AttendanceFragment attendanceFragment);
+
+    void inject(DashboardFragment dashboardFragment);
+
+    void inject(TimetableFragment timetableFragment);
+
+    void inject(TimetableTabFragment timetableTabFragment);
+}

app/src/main/java/io/github/wulkanowy/di/modules/ActivityModule.java

@@ -0,0 +1,64 @@
+package io.github.wulkanowy.di.modules;
+
+
+import android.content.Context;
+import android.support.v7.app.AppCompatActivity;
+
+import dagger.Module;
+import dagger.Provides;
+import io.github.wulkanowy.di.annotations.ActivityContext;
+import io.github.wulkanowy.di.annotations.PerActivity;
+import io.github.wulkanowy.ui.login.LoginContract;
+import io.github.wulkanowy.ui.login.LoginPresenter;
+import io.github.wulkanowy.ui.main.MainContract;
+import io.github.wulkanowy.ui.main.MainPagerAdapter;
+import io.github.wulkanowy.ui.main.MainPresenter;
+import io.github.wulkanowy.ui.splash.SplashContract;
+import io.github.wulkanowy.ui.splash.SplashPresenter;
+
+@Module
+public class ActivityModule {
+
+    private AppCompatActivity activity;
+
+    public ActivityModule(AppCompatActivity activity) {
+        this.activity = activity;
+    }
+
+    @ActivityContext
+    @Provides
+    Context provideContext() {
+        return activity;
+    }
+
+    @Provides
+    AppCompatActivity provideActivity() {
+        return activity;
+    }
+
+    @PerActivity
+    @Provides
+    SplashContract.Presenter provideSplashPresenter
+            (SplashPresenter splashPresenter) {
+        return splashPresenter;
+    }
+
+    @PerActivity
+    @Provides
+    LoginContract.Presenter provideLoginPresenter
+            (LoginPresenter loginPresenter) {
+        return loginPresenter;
+    }
+
+    @PerActivity
+    @Provides
+    MainContract.Presenter provideMainPresenter
+            (MainPresenter mainPresenter) {
+        return mainPresenter;
+    }
+
+    @Provides
+    MainPagerAdapter provideMainPagerAdapter() {
+        return new MainPagerAdapter(activity.getSupportFragmentManager());
+    }
+}

app/src/main/java/io/github/wulkanowy/di/modules/ApplicationModule.java

@@ -3,13 +3,41 @@ package io.github.wulkanowy.di.modules;
 import android.app.Application;
 import android.content.Context;
 
+import com.firebase.jobdispatcher.FirebaseJobDispatcher;
+import com.firebase.jobdispatcher.GooglePlayDriver;
+
+import javax.inject.Singleton;
+
 import dagger.Module;
 import dagger.Provides;
+import io.github.wulkanowy.api.Vulcan;
+import io.github.wulkanowy.data.Repository;
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.data.db.dao.DbHelper;
+import io.github.wulkanowy.data.db.dao.entities.DaoMaster;
+import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.resources.AppResources;
+import io.github.wulkanowy.data.db.resources.ResourcesContract;
+import io.github.wulkanowy.data.db.shared.SharedPref;
+import io.github.wulkanowy.data.db.shared.SharedPrefContract;
+import io.github.wulkanowy.data.sync.SyncContract;
+import io.github.wulkanowy.data.sync.grades.GradeSync;
+import io.github.wulkanowy.data.sync.login.LoginSync;
+import io.github.wulkanowy.data.sync.login.LoginSyncContract;
+import io.github.wulkanowy.data.sync.subjects.SubjectSync;
+import io.github.wulkanowy.data.sync.timetable.TimetableSync;
+import io.github.wulkanowy.data.sync.timetable.TimetableSyncContract;
+import io.github.wulkanowy.di.annotations.ApplicationContext;
+import io.github.wulkanowy.di.annotations.DatabaseInfo;
+import io.github.wulkanowy.di.annotations.SharedPreferencesInfo;
+import io.github.wulkanowy.di.annotations.SyncGrades;
+import io.github.wulkanowy.di.annotations.SyncSubjects;
+import io.github.wulkanowy.utils.AppConstant;
 
 @Module
 public class ApplicationModule {
 
-    protected final Application application;
+    private final Application application;
 
     public ApplicationModule(Application application) {
         this.application = application;
@@ -20,8 +48,82 @@ public class ApplicationModule {
         return application;
     }
 
+    @ApplicationContext
     @Provides
     Context provideAppContext() {
         return application;
     }
+
+    @DatabaseInfo
+    @Provides
+    String provideDatabaseName() {
+        return AppConstant.DATABASE_NAME;
+    }
+
+    @SharedPreferencesInfo
+    @Provides
+    String provideSharedPreferencesName() {
+        return AppConstant.SHARED_PREFERENCES_NAME;
+    }
+
+    @Singleton
+    @Provides
+    DaoSession provideDaoSession(DbHelper dbHelper) {
+        return new DaoMaster(dbHelper.getWritableDb()).newSession();
+    }
+
+    @Singleton
+    @Provides
+    Vulcan provideVulcan() {
+        return new Vulcan();
+    }
+
+    @Singleton
+    @Provides
+    RepositoryContract provideRepository(Repository repository) {
+        return repository;
+    }
+
+    @Singleton
+    @Provides
+    SharedPrefContract provideSharedPref(SharedPref sharedPref) {
+        return sharedPref;
+    }
+
+    @Singleton
+    @Provides
+    ResourcesContract provideAppResources(AppResources appResources) {
+        return appResources;
+    }
+
+    @Singleton
+    @Provides
+    LoginSyncContract provideLoginSync(LoginSync loginSync) {
+        return loginSync;
+    }
+
+    @SyncGrades
+    @Singleton
+    @Provides
+    SyncContract provideGradesSync(GradeSync gradeSync) {
+        return gradeSync;
+    }
+
+    @SyncSubjects
+    @Singleton
+    @Provides
+    SyncContract provideSubjectSync(SubjectSync subjectSync) {
+        return subjectSync;
+    }
+
+    @Singleton
+    @Provides
+    TimetableSyncContract provideTimetableSync(TimetableSync timetableSync) {
+        return timetableSync;
+    }
+
+    @Provides
+    FirebaseJobDispatcher provideDispatcher() {
+        return new FirebaseJobDispatcher(new GooglePlayDriver(application));
+    }
 }

app/src/main/java/io/github/wulkanowy/di/modules/FragmentModule.java

@@ -0,0 +1,76 @@
+package io.github.wulkanowy.di.modules;
+
+import android.support.v4.app.Fragment;
+
+import dagger.Module;
+import dagger.Provides;
+import eu.davidea.flexibleadapter.FlexibleAdapter;
+import io.github.wulkanowy.di.annotations.PerFragment;
+import io.github.wulkanowy.ui.main.attendance.AttendanceContract;
+import io.github.wulkanowy.ui.main.attendance.AttendancePresenter;
+import io.github.wulkanowy.ui.main.dashboard.DashboardContract;
+import io.github.wulkanowy.ui.main.dashboard.DashboardPresenter;
+import io.github.wulkanowy.ui.main.grades.GradeHeaderItem;
+import io.github.wulkanowy.ui.main.grades.GradesContract;
+import io.github.wulkanowy.ui.main.grades.GradesPresenter;
+import io.github.wulkanowy.ui.main.timetable.TimetableContract;
+import io.github.wulkanowy.ui.main.timetable.TimetableHeaderItem;
+import io.github.wulkanowy.ui.main.timetable.TimetablePagerAdapter;
+import io.github.wulkanowy.ui.main.timetable.TimetablePresenter;
+import io.github.wulkanowy.ui.main.timetable.TimetableTabContract;
+import io.github.wulkanowy.ui.main.timetable.TimetableTabPresenter;
+
+@Module
+public class FragmentModule {
+
+    private final Fragment fragment;
+
+    public FragmentModule(Fragment fragment) {
+        this.fragment = fragment;
+    }
+
+    @PerFragment
+    @Provides
+    GradesContract.Presenter provideGradesPresenter(GradesPresenter gradesPresenter) {
+        return gradesPresenter;
+    }
+
+    @PerFragment
+    @Provides
+    AttendanceContract.Presenter provideAttendancePresenter(AttendancePresenter attendancePresenter) {
+        return attendancePresenter;
+    }
+
+    @PerFragment
+    @Provides
+    DashboardContract.Presenter provideDashboardPresenter(DashboardPresenter dashboardPresenter) {
+        return dashboardPresenter;
+    }
+
+    @PerFragment
+    @Provides
+    TimetableContract.Presenter provideTimetablePresenter(TimetablePresenter timetablePresenter) {
+        return timetablePresenter;
+    }
+
+    @PerFragment
+    @Provides
+    TimetableTabContract.Presenter provideTimetableTabPresenter(TimetableTabPresenter timetableTabPresenter) {
+        return timetableTabPresenter;
+    }
+
+    @Provides
+    TimetablePagerAdapter provideTimetablePagerAdapter() {
+        return new TimetablePagerAdapter(fragment.getChildFragmentManager());
+    }
+
+    @Provides
+    FlexibleAdapter<GradeHeaderItem> provideGradesAdapter() {
+        return new FlexibleAdapter<>(null);
+    }
+
+    @Provides
+    FlexibleAdapter<TimetableHeaderItem> provideTimetableTabAdapter() {
+        return new FlexibleAdapter<>(null);
+    }
+}

app/src/main/java/io/github/wulkanowy/services/NotificationService.java

@@ -0,0 +1,55 @@
+package io.github.wulkanowy.services;
+
+
+import android.annotation.TargetApi;
+import android.app.Notification;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.content.Context;
+import android.os.Build;
+import android.support.v4.app.NotificationCompat;
+
+import java.util.Random;
+
+class NotificationService {
+
+    private static final String CHANNEL_ID = "Wulkanowy_New_Grade_Channel";
+
+    private static final String CHANNEL_NAME = "New Grade Channel";
+
+    private NotificationManager manager;
+
+    private Context context;
+
+    NotificationService(Context context) {
+        this.context = context;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            createChannel();
+        }
+    }
+
+    void notify(Notification notification) {
+        getManager().notify(new Random().nextInt(1000), notification);
+    }
+
+    NotificationCompat.Builder notificationBuilder() {
+        return new NotificationCompat.Builder(context, CHANNEL_ID);
+    }
+
+    @TargetApi(26)
+    private void createChannel() {
+        NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME,
+                NotificationManager.IMPORTANCE_HIGH);
+        notificationChannel.enableLights(true);
+        notificationChannel.enableVibration(true);
+        notificationChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
+        getManager().createNotificationChannel(notificationChannel);
+    }
+
+    private NotificationManager getManager() {
+        if (manager == null) {
+            manager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+        }
+        return manager;
+    }
+}

app/src/main/java/io/github/wulkanowy/services/SyncJob.java

@@ -0,0 +1,114 @@
+package io.github.wulkanowy.services;
+
+import android.app.PendingIntent;
+import android.content.Context;
+import android.support.v4.app.NotificationCompat;
+
+import com.firebase.jobdispatcher.Constraint;
+import com.firebase.jobdispatcher.FirebaseJobDispatcher;
+import com.firebase.jobdispatcher.GooglePlayDriver;
+import com.firebase.jobdispatcher.JobParameters;
+import com.firebase.jobdispatcher.JobService;
+import com.firebase.jobdispatcher.Lifetime;
+import com.firebase.jobdispatcher.RetryStrategy;
+import com.firebase.jobdispatcher.SimpleJobService;
+import com.firebase.jobdispatcher.Trigger;
+
+import java.util.List;
+
+import javax.inject.Inject;
+
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.WulkanowyApp;
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.ui.main.MainActivity;
+import io.github.wulkanowy.utils.LogUtils;
+
+public class SyncJob extends SimpleJobService {
+
+    private static final int DEFAULT_INTERVAL_START = 60 * 50;
+
+    private static final int DEFAULT_INTERVAL_END = DEFAULT_INTERVAL_START + (60 * 40);
+
+    public static final String EXTRA_INTENT_KEY = "cardId";
+
+    private List<Grade> gradeList;
+
+    @Inject
+    RepositoryContract repository;
+
+    public static void start(Context context) {
+        FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(context));
+
+        dispatcher.mustSchedule(dispatcher.newJobBuilder()
+                .setLifetime(Lifetime.FOREVER)
+                .setService(SyncJob.class)
+                .setTag("SyncJob")
+                .setRecurring(true)
+                .setTrigger(Trigger.executionWindow(DEFAULT_INTERVAL_START, DEFAULT_INTERVAL_END))
+                .setConstraints(Constraint.ON_ANY_NETWORK)
+                .setReplaceCurrent(false)
+                .setRetryStrategy(RetryStrategy.DEFAULT_EXPONENTIAL)
+                .build());
+    }
+
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        ((WulkanowyApp) getApplication()).getApplicationComponent().inject(this);
+    }
+
+    @Override
+    public int onRunJob(JobParameters job) {
+        try {
+            repository.loginCurrentUser();
+            repository.syncAll();
+
+            gradeList = repository.getNewGrades();
+
+            if (!gradeList.isEmpty()) {
+                showNotification();
+            }
+            return JobService.RESULT_SUCCESS;
+        } catch (Exception e) {
+            LogUtils.error("During background synchronization an error occurred", e);
+            return JobService.RESULT_FAIL_RETRY;
+        }
+    }
+
+    private void showNotification() {
+        NotificationService service = new NotificationService(getApplicationContext());
+
+        service.notify(service.notificationBuilder()
+                .setContentTitle(getStringTitle())
+                .setContentText(getStringContent())
+                .setSmallIcon(R.drawable.ic_notification)
+                .setAutoCancel(true)
+                .setDefaults(NotificationCompat.DEFAULT_ALL)
+                .setPriority(NotificationCompat.PRIORITY_HIGH)
+                .setColor(getResources().getColor(R.color.colorPrimary))
+                .setContentIntent(PendingIntent.getActivity(getApplicationContext(), 0,
+                        MainActivity.getStartIntent(getApplicationContext()).putExtra(EXTRA_INTENT_KEY, 0)
+                        , 0
+                ))
+                .build());
+    }
+
+    private String getStringTitle() {
+        if (gradeList.size() == 1) {
+            return getResources().getQuantityString(R.plurals.newGradePlurals, 1);
+        } else {
+            return getResources().getQuantityString(R.plurals.newGradePlurals, 2);
+        }
+    }
+
+    private String getStringContent() {
+        if (gradeList.size() == 1) {
+            return gradeList.get(0).getSubject();
+        } else {
+            return getResources().getQuantityString(R.plurals.receivedNewGradePlurals,
+                    gradeList.size(), gradeList.size());
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/services/Updater.java

@@ -1,189 +0,0 @@
-package io.github.wulkanowy.services;
-
-import android.Manifest;
-import android.app.Activity;
-import android.app.DownloadManager;
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.DialogInterface;
-import android.content.Intent;
-import android.content.IntentFilter;
-import android.content.pm.PackageManager;
-import android.database.Cursor;
-import android.net.Uri;
-import android.os.Build;
-import android.os.Environment;
-import android.support.annotation.NonNull;
-import android.support.design.widget.Snackbar;
-import android.support.v4.app.ActivityCompat;
-import android.support.v4.content.ContextCompat;
-import android.support.v4.content.FileProvider;
-import android.support.v7.app.AlertDialog;
-import android.util.Log;
-
-import com.github.javiersantos.appupdater.AppUpdaterUtils;
-import com.github.javiersantos.appupdater.enums.AppUpdaterError;
-import com.github.javiersantos.appupdater.enums.UpdateFrom;
-import com.github.javiersantos.appupdater.objects.Update;
-
-import java.io.File;
-
-import io.github.wulkanowy.BuildConfig;
-import io.github.wulkanowy.R;
-
-public class Updater {
-
-    private static final String DEBUG_TAG = "WulkanowyUpdater";
-
-    private static final int PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE = 0;
-
-    private Activity activity;
-
-    private Update update;
-
-    private DownloadManager downloadManager;
-
-    private BroadcastReceiver onComplete = new BroadcastReceiver() {
-
-        @Override
-        public void onReceive(Context context, Intent intent) {
-            DownloadManager.Query query = new DownloadManager.Query();
-            Cursor c = downloadManager.query(query);
-            if (c.moveToFirst()) {
-                String uriString = c.getString(c.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
-
-                if (uriString.substring(0, 7).matches("file://")) {
-                    uriString = uriString.substring(7);
-                }
-
-                File file = new File(uriString);
-
-                Intent install;
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-                    install = new Intent(Intent.ACTION_INSTALL_PACKAGE);
-                    install.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
-                    install.setData(FileProvider.getUriForFile(context,
-                            BuildConfig.APPLICATION_ID + ".fileprovider", file));
-                } else {
-                    install = new Intent(Intent.ACTION_VIEW);
-                    install.setDataAndType(Uri.parse("file://" + file.getAbsolutePath()),
-                            "application/vnd.android.package-archive");
-                }
-
-                context.startActivity(install);
-            }
-        }
-    };
-
-    public Updater(Activity activity) {
-        this.activity = activity;
-
-        downloadManager = (DownloadManager) activity.getSystemService(Context.DOWNLOAD_SERVICE);
-        activity.registerReceiver(onComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
-    }
-
-    private void downloadUpdate() {
-        if (ContextCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE)
-                == PackageManager.PERMISSION_GRANTED) {
-            startDownload();
-        } else {
-            requestWriteStoragePermission();
-        }
-    }
-
-    private void requestWriteStoragePermission() {
-        ActivityCompat.requestPermissions(activity,
-                new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
-                PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE);
-    }
-
-    private void startDownload() {
-        Snackbar.make(activity.findViewById(R.id.fragment_container), "Downloading started.", Snackbar.LENGTH_SHORT).show();
-
-        String path = Environment.getExternalStorageDirectory().toString() + File.separator +
-                Environment.DIRECTORY_DOWNLOADS + File.separator + "wulkanowy";
-
-        File dir = new File(path);
-        if(!dir.mkdirs()) {
-            for (String aChildren : dir.list()) {
-                new File(dir, aChildren).delete();
-            }
-        }
-
-        DownloadManager.Request request = new DownloadManager.Request(Uri.parse(update.getUrlToDownload().toString()))
-                .setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE)
-                .setAllowedOverRoaming(false)
-                .setTitle("Wulkanowy v" + update.getLatestVersionCode())
-                .setDescription(update.getLatestVersion())
-                .setVisibleInDownloadsUi(true)
-                .setMimeType("application/vnd.android.package-archive")
-                .setDestinationUri(Uri.fromFile(new File(path + File.separator + update.getLatestVersion() + ".apk")));
-
-        downloadManager.enqueue(request);
-    }
-
-    public void onRequestPermissionsResult(int requestCode, @NonNull int[] grantResults) {
-        if (requestCode == PERMISSION_REQUEST_WRITE_EXTERNAL_STORAGE) {
-            if (grantResults.length == 1 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
-                downloadUpdate();
-            } else {
-                Snackbar.make(activity.findViewById(R.id.fragment_container),
-                        "Write storage permission request was denied.",
-                        Snackbar.LENGTH_LONG)
-                        .show();
-            }
-        }
-    }
-
-    public Updater checkForUpdates() {
-        AppUpdaterUtils appUpdaterUtils = new AppUpdaterUtils(activity)
-                .setUpdateFrom(UpdateFrom.JSON)
-                .setUpdateJSON(BuildConfig.UPDATE_URL)
-                .withListener(new AppUpdaterUtils.UpdateListener() {
-
-                    @Override
-                    public void onSuccess(final Update currentUpdate, Boolean isUpdateAvailable) {
-                        Log.d(DEBUG_TAG, "Latest Version: " + currentUpdate.getLatestVersion());
-                        Log.d(DEBUG_TAG, "Latest Version Code: " + currentUpdate.getLatestVersionCode().toString());
-                        Log.d(DEBUG_TAG, "URL: " + currentUpdate.getUrlToDownload().toString());
-                        Log.d(DEBUG_TAG, "Is update available?: " + Boolean.toString(isUpdateAvailable));
-
-                        update = currentUpdate;
-                        showDialog(isUpdateAvailable);
-                    }
-
-                    @Override
-                    public void onFailed(AppUpdaterError error) {
-                        Log.e(DEBUG_TAG, "Something went wrong");
-                        Log.e(DEBUG_TAG, error.toString());
-                    }
-                });
-        appUpdaterUtils.start();
-
-        return this;
-    }
-
-    private void showDialog(boolean isUpdateAvailable) {
-        if (isUpdateAvailable) {
-            new AlertDialog.Builder(activity)
-                    .setTitle("Update is available")
-                    .setMessage("Update to version " + update.getLatestVersionCode().toString() +
-                            " is available. Your version is " + BuildConfig.VERSION_CODE + ". Update?")
-                    .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
-                        public void onClick(DialogInterface dialog, int which) {
-                            downloadUpdate();
-                        }
-                    })
-                    .setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {
-                        public void onClick(DialogInterface dialog, int which) {
-                            dialog.dismiss();
-                        }
-                    })
-                    .show();
-        }
-    }
-
-    public void onDestroy(Activity activity) {
-        activity.unregisterReceiver(onComplete);
-    }
-}

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

@@ -1,80 +0,0 @@
-package io.github.wulkanowy.services.jobs;
-
-import android.app.PendingIntent;
-import android.content.Intent;
-import android.support.v4.app.NotificationCompat;
-
-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.util.List;
-import java.util.Random;
-
-import io.github.wulkanowy.R;
-import io.github.wulkanowy.WulkanowyApp;
-import io.github.wulkanowy.db.dao.DatabaseAccess;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.db.dao.entities.Grade;
-import io.github.wulkanowy.services.notifications.NotificationBuilder;
-import io.github.wulkanowy.services.sync.VulcanSync;
-import io.github.wulkanowy.ui.main.DashboardActivity;
-
-public class FullSyncJob extends VulcanJobHelper {
-
-    private static final String UNIQUE_TAG = "FullSync";
-
-    private static final int DEFAULT_INTERVAL_START = 60 * 50;
-
-    private static final int DEFAULT_INTERVAL_END = DEFAULT_INTERVAL_START + (60 * 40);
-
-    @Override
-    protected Job createJob(FirebaseJobDispatcher dispatcher) {
-        return dispatcher.newJobBuilder()
-                .setLifetime(Lifetime.FOREVER)
-                .setService(SyncService.class)
-                .setTag(UNIQUE_TAG)
-                .setRecurring(true)
-                .setTrigger(Trigger.executionWindow(DEFAULT_INTERVAL_START, DEFAULT_INTERVAL_END))
-                .setConstraints(Constraint.ON_ANY_NETWORK)
-                .setReplaceCurrent(false)
-                .setRetryStrategy(RetryStrategy.DEFAULT_EXPONENTIAL)
-                .build();
-    }
-
-    public static class SyncService extends VulcanService {
-
-        @Override
-        public void workToBePerformed() throws Exception {
-            DaoSession daoSession = ((WulkanowyApp) getApplication()).getDaoSession();
-
-            VulcanSync synchronization = new VulcanSync()
-                    .loginCurrentUser(getApplicationContext(), daoSession);
-            synchronization.syncAll();
-            List<Grade> newGradeList = new DatabaseAccess().getNewGrades(daoSession);
-
-            if (newGradeList.size() == 1) {
-                buildNotify(getResources().getQuantityString(R.plurals.newGradePlurals, 1),
-                        newGradeList.get(0).getSubject());
-            } else if (newGradeList.size() > 1) {
-                buildNotify(getResources().getQuantityString(R.plurals.newGradePlurals, 2),
-                        getResources().getQuantityString(R.plurals.receivedNewGradePlurals, newGradeList.size(), newGradeList.size()));
-            }
-        }
-
-        private void buildNotify(String title, String bodyText) {
-            Intent intent = new Intent(getApplicationContext(), DashboardActivity.class);
-            intent.putExtra("cardID", 1);
-            PendingIntent pendingIntent = PendingIntent
-                    .getActivity(getApplicationContext(), 0, intent, 0);
-
-            NotificationBuilder notificationBuilder = new NotificationBuilder(getApplicationContext());
-            NotificationCompat.Builder builder = notificationBuilder
-                    .getNotifications(title, bodyText, pendingIntent);
-            notificationBuilder.getManager().notify(new Random().nextInt(10000), builder.build());
-        }
-    }
-}

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

@@ -1,22 +0,0 @@
-package io.github.wulkanowy.services.jobs;
-
-
-import android.content.Context;
-import android.util.Log;
-
-import com.firebase.jobdispatcher.FirebaseJobDispatcher;
-import com.firebase.jobdispatcher.GooglePlayDriver;
-import com.firebase.jobdispatcher.Job;
-
-public abstract class VulcanJobHelper {
-
-    public static final String DEBUG_TAG = "SynchronizationService";
-
-    public final void scheduledJob(Context context) {
-        FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(context));
-        dispatcher.mustSchedule(createJob(dispatcher));
-        Log.i(DEBUG_TAG, "Wulkanowy Job is initiation: " + this.toString());
-    }
-
-    protected abstract Job createJob(FirebaseJobDispatcher dispatcher);
-}

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

@@ -1,57 +0,0 @@
-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.lang.ref.WeakReference;
-
-public abstract class VulcanService extends JobService {
-
-    private SyncTask syncTask;
-
-    @Override
-    public boolean onStartJob(JobParameters params) {
-        Log.d(VulcanJobHelper.DEBUG_TAG, "Wulkanowy services start");
-        syncTask = new SyncTask(this, params);
-        syncTask.execute();
-        return true;
-    }
-
-    @Override
-    public boolean onStopJob(JobParameters params) {
-        Log.e(VulcanJobHelper.DEBUG_TAG, "Wulkanowy services stop");
-        if (syncTask != null) {
-            syncTask.cancel(true);
-        }
-        return true;
-    }
-
-    public abstract void workToBePerformed() throws Exception;
-
-    private static class SyncTask extends AsyncTask<Void, Void, Void> {
-
-        private JobParameters jobParameters;
-
-        private WeakReference<VulcanService> vulcanService;
-
-        public SyncTask(VulcanService vulcanService, JobParameters jobParameters) {
-            this.jobParameters = jobParameters;
-            this.vulcanService = new WeakReference<>(vulcanService);
-        }
-
-        @Override
-        protected Void doInBackground(Void... voids) {
-            try {
-                vulcanService.get().workToBePerformed();
-            } catch (Exception e) {
-                Log.e(VulcanJobHelper.DEBUG_TAG, "User logging in the background failed", e);
-            } finally {
-                vulcanService.get().jobFinished(jobParameters, false);
-            }
-            return null;
-        }
-    }
-}

app/src/main/java/io/github/wulkanowy/services/notifications/NotificationBuilder.java

@@ -1,60 +0,0 @@
-package io.github.wulkanowy.services.notifications;
-
-
-import android.annotation.TargetApi;
-import android.app.Notification;
-import android.app.NotificationChannel;
-import android.app.NotificationManager;
-import android.app.PendingIntent;
-import android.content.Context;
-import android.content.ContextWrapper;
-import android.os.Build;
-import android.support.v4.app.NotificationCompat;
-
-import io.github.wulkanowy.R;
-
-public class NotificationBuilder extends ContextWrapper {
-
-    public static final String CHANNEL_ID = "Wulkanowy_New_Grade_Channel";
-
-    public static final String CHANNEL_NAME = "New Grade Channel";
-
-    private NotificationManager manager;
-
-    public NotificationBuilder(Context context) {
-        super(context);
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            createChannel();
-        }
-    }
-
-    @TargetApi(26)
-    private void createChannel() {
-        NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ID, CHANNEL_NAME,
-                NotificationManager.IMPORTANCE_HIGH);
-        notificationChannel.enableLights(true);
-        notificationChannel.enableVibration(true);
-        notificationChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
-        getManager().createNotificationChannel(notificationChannel);
-    }
-
-    public NotificationCompat.Builder getNotifications(String title, String bodyText, PendingIntent pendingIntent) {
-        return new NotificationCompat.Builder(getApplicationContext(), CHANNEL_ID)
-                .setContentTitle(title)
-                .setContentText(bodyText)
-                .setSmallIcon(R.drawable.ic_notification)
-                .setAutoCancel(true)
-                .setContentIntent(pendingIntent)
-                .setChannelId(CHANNEL_ID)
-                .setDefaults(NotificationCompat.DEFAULT_ALL)
-                .setPriority(NotificationCompat.PRIORITY_HIGH)
-                .setColor(getResources().getColor(R.color.colorPrimary));
-    }
-
-    public NotificationManager getManager() {
-        if (manager == null) {
-            manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
-        }
-        return manager;
-    }
-}

app/src/main/java/io/github/wulkanowy/services/sync/CurrentAccountLogin.java

@@ -1,64 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.content.Context;
-import android.util.Log;
-
-import java.io.IOException;
-
-import io.github.wulkanowy.api.Vulcan;
-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.api.login.VulcanOfflineException;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.AccountDao;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.services.jobs.VulcanJobHelper;
-import io.github.wulkanowy.utils.security.CryptoException;
-import io.github.wulkanowy.utils.security.Safety;
-
-public class CurrentAccountLogin {
-
-    private final Context context;
-
-    private final DaoSession daoSession;
-
-    private final Vulcan vulcan;
-
-    public CurrentAccountLogin(Context context, DaoSession daoSession, Vulcan vulcan) {
-        this.context = context;
-        this.daoSession = daoSession;
-        this.vulcan = vulcan;
-    }
-
-    public LoginSession loginCurrentUser() throws CryptoException,
-            BadCredentialsException, AccountPermissionException, IOException, LoginErrorException, VulcanOfflineException {
-
-        AccountDao accountDao = daoSession.getAccountDao();
-
-        long userId = context.getSharedPreferences("LoginData", Context.MODE_PRIVATE).getLong("userId", 0);
-
-        if (userId != 0) {
-
-            Log.d(VulcanJobHelper.DEBUG_TAG, "Login current user id=" + String.valueOf(userId));
-
-            Safety safety = new Safety();
-            Account account = accountDao.load(userId);
-
-            vulcan.login(
-                    account.getEmail(),
-                    safety.decrypt(account.getEmail(), account.getPassword()),
-                    account.getSymbol(),
-                    account.getSnpId()
-            );
-
-            return new LoginSession()
-                    .setDaoSession(daoSession)
-                    .setUserId(userId)
-                    .setVulcan(vulcan);
-        } else {
-            Log.wtf(VulcanJobHelper.DEBUG_TAG, "loginCurrentUser - USERID IS EMPTY");
-            throw new IOException("Can't find user with index 0");
-        }
-    }
-}

app/src/main/java/io/github/wulkanowy/services/sync/FirstAccountLogin.java

@@ -1,59 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.content.Context;
-import android.content.SharedPreferences;
-
-import java.io.IOException;
-
-import io.github.wulkanowy.api.Vulcan;
-import io.github.wulkanowy.api.login.AccountPermissionException;
-import io.github.wulkanowy.api.login.BadCredentialsException;
-import io.github.wulkanowy.api.login.NotLoggedInErrorException;
-import io.github.wulkanowy.api.login.VulcanOfflineException;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.AccountDao;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.utils.security.CryptoException;
-import io.github.wulkanowy.utils.security.Safety;
-
-public class FirstAccountLogin {
-
-    private final Context context;
-
-    private final DaoSession daoSession;
-
-    private final Vulcan vulcan;
-
-    public FirstAccountLogin(Context context, DaoSession daoSession, Vulcan vulcan) {
-        this.context = context;
-        this.daoSession = daoSession;
-        this.vulcan = vulcan;
-    }
-
-    public LoginSession login(String email, String password, String symbol)
-            throws NotLoggedInErrorException, AccountPermissionException, IOException, CryptoException, VulcanOfflineException, BadCredentialsException {
-
-        String realSymbol = vulcan.login(email, password, symbol);
-
-        AccountDao accountDao = daoSession.getAccountDao();
-        Safety safety = new Safety();
-        Account account = new Account()
-                .setName(vulcan.getBasicInformation().getPersonalData().getFirstAndLastName())
-                .setEmail(email)
-                .setPassword(safety.encrypt(email, password, context))
-                .setSymbol(realSymbol)
-                .setSnpId(vulcan.getStudentAndParent().getId());
-
-        long userId = accountDao.insert(account);
-
-        SharedPreferences sharedPreferences = context.getSharedPreferences("LoginData", Context.MODE_PRIVATE);
-        SharedPreferences.Editor editor = sharedPreferences.edit();
-        editor.putLong("userId", userId);
-        editor.apply();
-
-        return new LoginSession()
-                .setVulcan(vulcan)
-                .setUserId(userId)
-                .setDaoSession(daoSession);
-    }
-}

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

@@ -1,64 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.util.Log;
-
-import org.greenrobot.greendao.query.Query;
-
-import java.io.IOException;
-import java.text.ParseException;
-import java.util.ArrayList;
-import java.util.List;
-
-import io.github.wulkanowy.api.grades.GradesList;
-import io.github.wulkanowy.api.login.NotLoggedInErrorException;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.AccountDao;
-import io.github.wulkanowy.db.dao.entities.Grade;
-import io.github.wulkanowy.db.dao.entities.GradeDao;
-import io.github.wulkanowy.db.dao.entities.Subject;
-import io.github.wulkanowy.db.dao.entities.SubjectDao;
-import io.github.wulkanowy.services.jobs.VulcanJobHelper;
-import io.github.wulkanowy.utils.DataObjectConverter;
-import io.github.wulkanowy.utils.EntitiesCompare;
-
-public class GradesSync {
-
-    public void sync(LoginSession loginSession) throws IOException,
-            ParseException, NotLoggedInErrorException {
-
-        GradesList gradesList = loginSession.getVulcan().getGradesList();
-
-        GradeDao gradeDao = loginSession.getDaoSession().getGradeDao();
-        AccountDao accountDao = loginSession.getDaoSession().getAccountDao();
-        SubjectDao subjectDao = loginSession.getDaoSession().getSubjectDao();
-
-        Account account = accountDao.load(loginSession.getUserId());
-
-        account.resetGradeList();
-        account.resetSubjectList();
-
-        List<Grade> gradesFromDb = account.getGradeList();
-        List<Grade> gradeEntitiesList = DataObjectConverter.gradesToGradeEntities(gradesList.getAll());
-        List<Grade> updatedList = EntitiesCompare.compareGradeList(gradeEntitiesList, gradesFromDb);
-        List<Grade> lastList = new ArrayList<>();
-
-        GradeDao.dropTable(gradeDao.getDatabase(), true);
-        GradeDao.createTable(gradeDao.getDatabase(), false);
-
-        for (Grade grade : updatedList) {
-
-            Query<Subject> subjectQuery = subjectDao.queryBuilder()
-                    .where(SubjectDao.Properties.Name.eq(grade.getSubject()))
-                    .build();
-
-            grade.setUserId(loginSession.getUserId());
-            grade.setSubjectId((subjectQuery.uniqueOrThrow()).getId());
-
-            lastList.add(grade);
-        }
-
-        gradeDao.insertInTx(lastList);
-
-        Log.d(VulcanJobHelper.DEBUG_TAG, "Synchronization grades (amount = " + String.valueOf(lastList.size() + ")"));
-    }
-}

app/src/main/java/io/github/wulkanowy/services/sync/LoginSession.java

@@ -1,69 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-
-import org.apache.commons.lang3.builder.EqualsBuilder;
-import org.apache.commons.lang3.builder.HashCodeBuilder;
-
-import io.github.wulkanowy.api.Vulcan;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-
-
-public class LoginSession {
-
-    private Long userId;
-
-    private Vulcan vulcan;
-
-    private DaoSession daoSession;
-
-    public Long getUserId() {
-        return userId;
-    }
-
-    public LoginSession setUserId(Long userId) {
-        this.userId = userId;
-        return this;
-    }
-
-    public Vulcan getVulcan() {
-        return vulcan;
-    }
-
-    public LoginSession setVulcan(Vulcan vulcan) {
-        this.vulcan = vulcan;
-        return this;
-    }
-
-    public DaoSession getDaoSession() {
-        return daoSession;
-    }
-
-    public LoginSession setDaoSession(DaoSession daoSession) {
-        this.daoSession = daoSession;
-        return this;
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-
-        if (o == null || getClass() != o.getClass()) return false;
-
-        LoginSession that = (LoginSession) o;
-
-        return new EqualsBuilder()
-                .append(userId, that.userId)
-                .append(vulcan, that.vulcan)
-                .append(daoSession, that.daoSession)
-                .isEquals();
-    }
-
-    @Override
-    public int hashCode() {
-        return new HashCodeBuilder(17, 37)
-                .append(userId)
-                .append(vulcan)
-                .append(daoSession)
-                .toHashCode();
-    }
-}

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

@@ -1,39 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.util.Log;
-
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-
-import io.github.wulkanowy.api.grades.SubjectsList;
-import io.github.wulkanowy.api.login.NotLoggedInErrorException;
-import io.github.wulkanowy.db.dao.entities.Subject;
-import io.github.wulkanowy.db.dao.entities.SubjectDao;
-import io.github.wulkanowy.services.jobs.VulcanJobHelper;
-import io.github.wulkanowy.utils.DataObjectConverter;
-
-public class SubjectsSync {
-
-    public void sync(LoginSession loginSession) throws IOException,
-            NotLoggedInErrorException {
-
-        SubjectsList subjectsList = loginSession.getVulcan().getSubjectsList();
-        SubjectDao subjectDao = loginSession.getDaoSession().getSubjectDao();
-
-        List<Subject> subjectEntitiesList = DataObjectConverter.subjectsToSubjectEntities(subjectsList.getAll());
-        List<Subject> preparedList = new ArrayList<>();
-
-        for (Subject subject : subjectEntitiesList) {
-            subject.setUserId(loginSession.getUserId());
-            preparedList.add(subject);
-        }
-
-        SubjectDao.dropTable(subjectDao.getDatabase(), true);
-        SubjectDao.createTable(subjectDao.getDatabase(), false);
-        subjectDao.insertInTx(preparedList);
-
-
-        Log.d(VulcanJobHelper.DEBUG_TAG, "Synchronization subjects (amount = " + String.valueOf(subjectEntitiesList.size() + ")"));
-    }
-}

app/src/main/java/io/github/wulkanowy/services/sync/TimetableSync.java

@@ -1,121 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.util.Log;
-
-import org.greenrobot.greendao.query.Query;
-
-import java.io.IOException;
-import java.text.ParseException;
-import java.util.ArrayList;
-import java.util.List;
-
-import io.github.wulkanowy.api.login.NotLoggedInErrorException;
-import io.github.wulkanowy.api.timetable.Day;
-import io.github.wulkanowy.api.timetable.Week;
-import io.github.wulkanowy.db.dao.entities.DayDao;
-import io.github.wulkanowy.db.dao.entities.Lesson;
-import io.github.wulkanowy.db.dao.entities.LessonDao;
-import io.github.wulkanowy.db.dao.entities.WeekDao;
-import io.github.wulkanowy.services.jobs.VulcanJobHelper;
-import io.github.wulkanowy.utils.DataObjectConverter;
-import io.github.wulkanowy.utils.TimeUtils;
-
-public class TimetableSync {
-
-    public void sync(@NonNull LoginSession loginSession, @Nullable String dateOfMonday) throws NotLoggedInErrorException,
-            IOException, ParseException {
-        DayDao dayDao = loginSession.getDaoSession().getDayDao();
-        LessonDao lessonDao = loginSession.getDaoSession().getLessonDao();
-        WeekDao weekDao = loginSession.getDaoSession().getWeekDao();
-
-        Long weekId;
-
-        Week week = dateOfMonday == null ? loginSession.getVulcan().getTimetable().getWeekTable()
-                : loginSession.getVulcan().getTimetable()
-                .getWeekTable(String.valueOf(TimeUtils.getNetTicks(dateOfMonday, "yyyy-MM-dd")));
-
-        Query<io.github.wulkanowy.db.dao.entities.Week> weekQuery = weekDao.queryBuilder()
-                .where(WeekDao.Properties.UserId.eq(loginSession.getUserId()), WeekDao.Properties.StartDayDate.eq(week.getStartDayDate())).build();
-
-        io.github.wulkanowy.db.dao.entities.Week week1 = weekQuery.unique();
-
-        if (week1 != null) {
-            weekId = week1.getId();
-        } else {
-            weekId = weekDao.insert(DataObjectConverter.weekToWeekEntitie(week).setUserId(loginSession.getUserId()));
-        }
-
-        List<Day> dayList = week.getDays();
-
-        dayDao.saveInTx(getPreparedDaysList(dayList, loginSession.getUserId(), weekId, dayDao));
-
-        Log.d(VulcanJobHelper.DEBUG_TAG, "Synchronization days (amount = " + dayList.size() + ")");
-
-        List<Lesson> lessonList = new ArrayList<>();
-        lessonList.addAll(getPreparedLessonsList(dayList, dayDao, lessonDao, loginSession.getUserId(), weekId));
-
-        lessonDao.saveInTx(lessonList);
-
-        Log.d(VulcanJobHelper.DEBUG_TAG, "Synchronization lessons (amount = " + lessonList.size() + ")");
-    }
-
-    private List<Lesson> getPreparedLessonsList(List<Day> dayList, DayDao dayDao, LessonDao lessonDao, long userId, long weekId) {
-        List<Lesson> allLessonsList = new ArrayList<>();
-
-        for (Day day : dayList) {
-
-            Query<io.github.wulkanowy.db.dao.entities.Day> dayQuery = dayDao.queryBuilder()
-                    .where(DayDao.Properties.Date.eq(day.getDate()),
-                            DayDao.Properties.UserId.eq(userId),
-                            DayDao.Properties.WeekId.eq(weekId))
-                    .build();
-
-            List<Lesson> lessonEntityList = DataObjectConverter.lessonsToLessonsEntities(day.getLessons());
-            List<Lesson> updatedLessonEntityList = new ArrayList<>();
-
-            for (Lesson lesson : lessonEntityList) {
-                Lesson lesson1 = lessonDao.queryBuilder()
-                        .where(LessonDao.Properties.DayId.eq(dayQuery.uniqueOrThrow().getId()),
-                                LessonDao.Properties.Date.eq(lesson.getDate()),
-                                LessonDao.Properties.StartTime.eq(lesson.getStartTime()),
-                                LessonDao.Properties.EndTime.eq(lesson.getEndTime()))
-                        .unique();
-
-                if (lesson1 != null) {
-                    lesson.setId(lesson1.getId());
-                }
-
-                lesson.setDayId(dayQuery.uniqueOrThrow().getId());
-                if (!"".equals(lesson.getSubject())) {
-                    updatedLessonEntityList.add(lesson);
-                }
-            }
-            allLessonsList.addAll(updatedLessonEntityList);
-        }
-        return allLessonsList;
-    }
-
-    private List<io.github.wulkanowy.db.dao.entities.Day> getPreparedDaysList(List<Day> dayList, long userId, long weekId, DayDao dayDao) {
-        List<io.github.wulkanowy.db.dao.entities.Day> updatedDayList = new ArrayList<>();
-        List<io.github.wulkanowy.db.dao.entities.Day> dayEntityList = DataObjectConverter
-                .daysToDaysEntities(dayList);
-        for (io.github.wulkanowy.db.dao.entities.Day day : dayEntityList) {
-
-            Query<io.github.wulkanowy.db.dao.entities.Day> dayQuery = dayDao.queryBuilder().where(DayDao.Properties.UserId.eq(userId), DayDao.Properties.WeekId.eq(weekId), DayDao.Properties.Date.eq(day.getDate())).build();
-
-            io.github.wulkanowy.db.dao.entities.Day day1 = dayQuery.unique();
-
-            if (day1 != null) {
-                day.setId(day1.getId());
-            }
-
-            day.setUserId(userId);
-            day.setWeekId(weekId);
-            updatedDayList.add(day);
-        }
-        return updatedDayList;
-    }
-}

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

@@ -1,105 +0,0 @@
-package io.github.wulkanowy.services.sync;
-
-import android.content.Context;
-import android.support.annotation.Nullable;
-import android.util.Log;
-
-import java.io.IOException;
-
-import io.github.wulkanowy.api.Vulcan;
-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.api.login.NotLoggedInErrorException;
-import io.github.wulkanowy.api.login.VulcanOfflineException;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.services.jobs.VulcanJobHelper;
-import io.github.wulkanowy.utils.security.CryptoException;
-
-public class VulcanSync {
-
-    private LoginSession loginSession;
-
-    public VulcanSync(LoginSession loginSession) {
-        this.loginSession = loginSession;
-    }
-
-    public VulcanSync() {
-        this.loginSession = new LoginSession();
-    }
-
-    public void firstLoginSignInStep(Context context, DaoSession daoSession, String email, String password, String symbol)
-            throws NotLoggedInErrorException, AccountPermissionException, IOException, CryptoException, VulcanOfflineException, BadCredentialsException {
-        FirstAccountLogin firstAccountLogin = new FirstAccountLogin(context, daoSession, new Vulcan());
-        loginSession = firstAccountLogin.login(email, password, symbol);
-    }
-
-    public VulcanSync loginCurrentUser(Context context, DaoSession daoSession) throws CryptoException,
-            BadCredentialsException, AccountPermissionException, LoginErrorException, IOException, VulcanOfflineException {
-        return loginCurrentUser(context, daoSession, new Vulcan());
-    }
-
-    public VulcanSync loginCurrentUser(Context context, DaoSession daoSession, Vulcan vulcan)
-            throws CryptoException, BadCredentialsException, AccountPermissionException,
-            LoginErrorException, IOException, VulcanOfflineException {
-
-        CurrentAccountLogin currentAccountLogin = new CurrentAccountLogin(context, daoSession, vulcan);
-        loginSession = currentAccountLogin.loginCurrentUser();
-        return this;
-    }
-
-    public void syncAll() throws IOException {
-        syncSubjectsAndGrades();
-        syncTimetable();
-    }
-
-    public void syncGrades() throws IOException {
-        if (loginSession != null) {
-            GradesSync gradesSync = new GradesSync();
-            try {
-                gradesSync.sync(loginSession);
-            } catch (Exception e) {
-                Log.e(VulcanJobHelper.DEBUG_TAG, "Synchronisation of grades failed", e);
-                throw new IOException(e.getCause());
-            }
-        } else {
-            Log.e(VulcanJobHelper.DEBUG_TAG, "Before sync, should login user to log",
-                    new UnsupportedOperationException());
-        }
-    }
-
-    public void syncSubjectsAndGrades() throws IOException {
-        if (loginSession != null) {
-            SubjectsSync subjectsSync = new SubjectsSync();
-            try {
-                subjectsSync.sync(loginSession);
-                syncGrades();
-            } catch (Exception e) {
-                Log.e(VulcanJobHelper.DEBUG_TAG, "Synchronisation of subjects failed", e);
-                throw new IOException(e.getCause());
-            }
-        } else {
-            Log.e(VulcanJobHelper.DEBUG_TAG, "Before sync, should login user to log",
-                    new UnsupportedOperationException());
-        }
-    }
-
-    public void syncTimetable() throws IOException {
-        syncTimetable(null);
-    }
-
-    public void syncTimetable(@Nullable String date) throws IOException {
-        if (loginSession != null) {
-            TimetableSync timetableSync = new TimetableSync();
-            try {
-                timetableSync.sync(loginSession, date);
-            } catch (Exception e) {
-                Log.e(VulcanJobHelper.DEBUG_TAG, "Synchronization of timetable failed", e);
-                throw new IOException(e.getCause());
-            }
-        } else {
-            Log.e(VulcanJobHelper.DEBUG_TAG, "Before sync, should login user to log",
-                    new UnsupportedOperationException());
-        }
-    }
-}

app/src/main/java/io/github/wulkanowy/ui/base/BaseActivity.java

@@ -0,0 +1,67 @@
+package io.github.wulkanowy.ui.base;
+
+import android.os.Bundle;
+import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
+import android.widget.Toast;
+
+import butterknife.Unbinder;
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.WulkanowyApp;
+import io.github.wulkanowy.di.component.ActivityComponent;
+import io.github.wulkanowy.di.component.DaggerActivityComponent;
+import io.github.wulkanowy.di.modules.ActivityModule;
+import io.github.wulkanowy.utils.NetworkUtils;
+
+public abstract class BaseActivity extends AppCompatActivity implements BaseContract.View {
+
+    private ActivityComponent activityComponent;
+
+    private Unbinder unbinder;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        activityComponent = DaggerActivityComponent.builder()
+                .activityModule(new ActivityModule(this))
+                .applicationComponent(((WulkanowyApp) getApplication()).getApplicationComponent())
+                .build();
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (unbinder != null) {
+            unbinder.unbind();
+        }
+    }
+
+    @Override
+    public void onError(int resId) {
+        onError(getString(resId));
+    }
+
+    @Override
+    public void onError(String message) {
+        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
+    }
+
+    @Override
+    public void onNoNetworkError() {
+        onError(R.string.noInternet_text);
+    }
+
+    @Override
+    public boolean isNetworkConnected() {
+        return NetworkUtils.isOnline(getApplicationContext());
+    }
+
+    public ActivityComponent getActivityComponent() {
+        return activityComponent;
+    }
+
+    public void setButterKnife(Unbinder unbinder) {
+        this.unbinder = unbinder;
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/base/BaseContract.java

@@ -0,0 +1,27 @@
+package io.github.wulkanowy.ui.base;
+
+import android.support.annotation.StringRes;
+
+import io.github.wulkanowy.di.annotations.PerActivity;
+
+public interface BaseContract {
+
+    interface View {
+
+        void onError(@StringRes int resId);
+
+        void onError(String message);
+
+        void onNoNetworkError();
+
+        boolean isNetworkConnected();
+    }
+
+    @PerActivity
+    interface Presenter<V extends View> {
+
+        void onStart(V view);
+
+        void onDestroy();
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/base/BaseFragment.java

@@ -0,0 +1,104 @@
+package io.github.wulkanowy.ui.base;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.app.Fragment;
+import android.view.View;
+
+import butterknife.Unbinder;
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.WulkanowyApp;
+import io.github.wulkanowy.di.component.DaggerFragmentComponent;
+import io.github.wulkanowy.di.component.FragmentComponent;
+import io.github.wulkanowy.di.modules.FragmentModule;
+
+public abstract class BaseFragment extends Fragment implements BaseContract.View {
+
+    private BaseActivity activity;
+
+    private Unbinder unbinder;
+
+    private FragmentComponent fragmentComponent;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        if (context instanceof BaseActivity) {
+            activity = (BaseActivity) context;
+        }
+
+        fragmentComponent = DaggerFragmentComponent.builder()
+                .fragmentModule(new FragmentModule(this))
+                .applicationComponent(((WulkanowyApp) activity.getApplication()).getApplicationComponent())
+                .build();
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setHasOptionsMenu(false);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        setUpOnViewCreated(view);
+    }
+
+    @Override
+    public void onDetach() {
+        activity = null;
+        super.onDetach();
+    }
+
+    @Override
+    public void onDestroyView() {
+        if (unbinder != null) {
+            unbinder.unbind();
+        }
+        super.onDestroyView();
+    }
+
+    @Override
+    public void onError(int resId) {
+        onError(getString(resId));
+    }
+
+    @Override
+    public void onError(String message) {
+        if (activity != null) {
+            activity.onError(message);
+        }
+    }
+
+    @Override
+    public void onNoNetworkError() {
+        onError(R.string.noInternet_text);
+    }
+
+    @Override
+    public boolean isNetworkConnected() {
+        return activity != null && activity.isNetworkConnected();
+    }
+
+    public void setButterKnife(Unbinder unbinder) {
+        this.unbinder = unbinder;
+    }
+
+    public void setTitle(String title) {
+        if (activity != null) {
+            activity.setTitle(title);
+        }
+    }
+
+    public FragmentComponent getFragmentComponent() {
+        return fragmentComponent;
+    }
+
+
+    protected void setUpOnViewCreated(View fragmentView) {
+        // do something on view created
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/base/BasePresenter.java

@@ -0,0 +1,35 @@
+package io.github.wulkanowy.ui.base;
+
+import javax.inject.Inject;
+
+import io.github.wulkanowy.data.RepositoryContract;
+
+public class BasePresenter<V extends BaseContract.View> implements BaseContract.Presenter<V> {
+
+    private final RepositoryContract repository;
+
+    private V view;
+
+    @Inject
+    public BasePresenter(RepositoryContract repository) {
+        this.repository = repository;
+    }
+
+    @Override
+    public void onStart(V view) {
+        this.view = view;
+    }
+
+    @Override
+    public void onDestroy() {
+        view = null;
+    }
+
+    public final RepositoryContract getRepository() {
+        return repository;
+    }
+
+    public V getView() {
+        return view;
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/login/LoginActivity.java

@@ -1,226 +1,223 @@
 package io.github.wulkanowy.ui.login;
 
-import android.app.Activity;
+import android.animation.Animator;
-import android.net.Uri;
+import android.animation.AnimatorListenerAdapter;
+import android.content.Context;
+import android.content.Intent;
 import android.os.Bundle;
-import android.support.annotation.NonNull;
+import android.support.design.widget.Snackbar;
-import android.support.customtabs.CustomTabsIntent;
+import android.support.design.widget.TextInputLayout;
-import android.text.TextUtils;
-import android.view.KeyEvent;
-import android.view.MotionEvent;
 import android.view.View;
-import android.view.View.OnClickListener;
 import android.view.inputmethod.EditorInfo;
 import android.widget.ArrayAdapter;
 import android.widget.AutoCompleteTextView;
-import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;
 
-import java.util.LinkedHashMap;
+import javax.inject.Inject;
 
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import butterknife.OnClick;
+import butterknife.OnEditorAction;
 import io.github.wulkanowy.R;
-import io.github.wulkanowy.services.Updater;
+import io.github.wulkanowy.ui.base.BaseActivity;
+import io.github.wulkanowy.ui.main.MainActivity;
+import io.github.wulkanowy.utils.AppConstant;
+import io.github.wulkanowy.utils.CommonUtils;
 import io.github.wulkanowy.utils.KeyboardUtils;
 
-/**
+public class LoginActivity extends BaseActivity implements LoginContract.View {
- * A login screen that offers login via email/password.
- */
-public class LoginActivity extends Activity {
 
-    private float touchPosition;
+    @BindView(R.id.login_activity_email_edit)
+    EditText emailView;
 
-    private EditText emailView;
+    @BindView(R.id.login_activity_pass_edit)
+    EditText passwordView;
 
-    private EditText passwordView;
+    @BindView(R.id.login_activity_symbol_edit)
+    AutoCompleteTextView symbolView;
 
-    private AutoCompleteTextView symbolView;
+    @BindView(R.id.login_activity_form_scroll)
+    View loginFormView;
 
-    private Updater updater;
+    @BindView(R.id.login_activity_progress_container)
+    View loadingBarView;
+
+    @BindView(R.id.login_activity_progress_text)
+    TextView loginProgressText;
+
+    @BindView(R.id.login_activity_symbol_text_input)
+    TextInputLayout symbolLayout;
+
+    @Inject
+    LoginContract.Presenter presenter;
+
+    private EditText requestedView;
+
+    public static Intent getStartIntent(Context context) {
+        return new Intent(context, LoginActivity.class);
+    }
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_login);
 
-        updater = new Updater(this).checkForUpdates();
+        setButterKnife(ButterKnife.bind(this));
+        getActivityComponent().inject(this);
 
-        // Set up the login form.
+        presenter.onStart(this);
-        emailView = findViewById(R.id.email);
-        passwordView = findViewById(R.id.password);
-        symbolView = findViewById(R.id.symbol);
 
-        passwordView.setOnEditorActionListener(getTextViewSignInListener());
+        setUpOnCreate();
-        symbolView.setOnEditorActionListener(getTextViewSignInListener());
 
-        populateAutoComplete();
-
-        Button signInButton = findViewById(R.id.action_sign_in);
-        signInButton.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View view) {
-                attemptLogin();
-            }
-        });
-
-        findViewById(R.id.action_create_account).setOnClickListener(getButtonLinkListener(
-                "https://cufs.vulcan.net.pl/Default/AccountManage/CreateAccount"
-        ));
-
-        findViewById(R.id.action_forgot_password).setOnClickListener(getButtonLinkListener(
-                "https://cufs.vulcan.net.pl/Default/AccountManage/UnlockAccount"
-        ));
     }
 
-    @Override
+    protected void setUpOnCreate() {
-    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        symbolView.setAdapter(new ArrayAdapter<>(this, android.R.layout.simple_list_item_1,
-        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+                getResources().getStringArray(R.array.symbols)));
-        updater.onRequestPermissionsResult(requestCode, grantResults);
     }
 
-    private TextView.OnEditorActionListener getTextViewSignInListener() {
+    @OnClick(R.id.login_activity_sign_button)
-        return new TextView.OnEditorActionListener() {
+    void onLoginButtonClick() {
-            @Override
+        presenter.attemptLogin(
-            public boolean onEditorAction(TextView textView, int id, KeyEvent keyEvent) {
+                emailView.getText().toString(),
+                passwordView.getText().toString(),
+                symbolView.getText().toString());
+    }
+
+    @OnEditorAction(value = {R.id.login_activity_symbol_edit, R.id.login_activity_pass_edit})
+    boolean onEditorAction(int id) {
         if (id == EditorInfo.IME_ACTION_DONE || id == EditorInfo.IME_NULL) {
-                    attemptLogin();
+            onLoginButtonClick();
             return true;
         }
         return false;
     }
-        };
+
+    @OnClick(R.id.login_activity_create_text)
+    void onCreateAccountButtonClick() {
+        CommonUtils.openInternalBrowserViewer(getApplicationContext(),
+                AppConstant.VULCAN_CREATE_ACCOUNT_URL);
+    }
+
+    @OnClick(R.id.login_activity_forgot_text)
+    void onForgotPasswordButtonClick() {
+        CommonUtils.openInternalBrowserViewer(getApplicationContext(),
+                AppConstant.VULCAN_FORGOT_PASS_URL);
     }
 
-    private OnClickListener getButtonLinkListener(final String url) {
-        return new OnClickListener() {
     @Override
-            public void onClick(View view) {
+    public void setErrorEmailRequired() {
-                CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
+        emailView.requestFocus();
-                CustomTabsIntent customTabsIntent = builder.build();
+        emailView.setError(getString(R.string.error_field_required));
-                builder.setToolbarColor(getResources().getColor(R.color.colorPrimary));
+        requestedView = emailView;
-                customTabsIntent.launchUrl(view.getContext(), Uri.parse(url));
-            }
-        };
     }
 
-    private void populateAutoComplete() {
+    @Override
-        // Get the string array
+    public void setErrorEmailInvalid() {
-        String[] countries = getResources().getStringArray(R.array.symbols);
+        emailView.requestFocus();
-        // Create the adapter and set it to the AutoCompleteTextView
+        emailView.setError(getString(R.string.error_invalid_email));
-        ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1,
+        requestedView = emailView;
-                countries);
-        symbolView.setAdapter(adapter);
     }
 
-    /**
+    @Override
-     * Attempts to sign in the account specified by the login form.
+    public void setErrorPassRequired() {
-     */
+        passwordView.requestFocus();
-    private void attemptLogin() {
+        passwordView.setError(getString(R.string.error_field_required));
-        // Reset errors.
+        requestedView = passwordView;
+    }
+
+    @Override
+    public void setErrorPassInvalid() {
+        passwordView.requestFocus();
+        passwordView.setError(getString(R.string.error_invalid_password));
+        requestedView = passwordView;
+    }
+
+    @Override
+    public void setErrorPassIncorrect() {
+        passwordView.requestFocus();
+        passwordView.setError(getString(R.string.error_incorrect_password));
+        requestedView = passwordView;
+    }
+
+    @Override
+    public void setErrorSymbolRequired() {
+        symbolLayout.setVisibility(View.VISIBLE);
+        symbolView.setError(getString(R.string.error_bad_account_permission));
+        symbolView.requestFocus();
+        requestedView = symbolView;
+    }
+
+    @Override
+    public void resetViewErrors() {
         emailView.setError(null);
         passwordView.setError(null);
-
-        // Store values at the time of the login attempt.
-        String email = emailView.getText().toString();
-        String password = passwordView.getText().toString();
-        String symbol = symbolView.getText().toString();
-
-        boolean cancel = false;
-        View focusView = null;
-
-        // Check for a valid password.
-        if (TextUtils.isEmpty(password)) {
-            passwordView.setError(getString(R.string.error_field_required));
-            focusView = passwordView;
-            cancel = true;
-        } else if (!isPasswordValid(password)) {
-            passwordView.setError(getString(R.string.error_invalid_password));
-            focusView = passwordView;
-            cancel = true;
-        }
-
-        // Check for a valid email address.
-        if (TextUtils.isEmpty(email)) {
-            emailView.setError(getString(R.string.error_field_required));
-            focusView = emailView;
-            cancel = true;
-        } else if (!isEmailValid(email)) {
-            emailView.setError(getString(R.string.error_invalid_email));
-            focusView = emailView;
-            cancel = true;
-        }
-
-        // Check for a valid symbol.
-        if (TextUtils.isEmpty(symbol)) {
-            symbol = "Default";
-        }
-
-        String[] keys = getResources().getStringArray(R.array.symbols);
-        String[] values = getResources().getStringArray(R.array.symbols_values);
-        LinkedHashMap<String, String> map = new LinkedHashMap<>();
-
-        for (int i = 0; i < Math.min(keys.length, values.length); ++i) {
-            map.put(keys[i], values[i]);
-        }
-
-        if (map.containsKey(symbol)) {
-            symbol = map.get(symbol);
-        }
-
-        if (cancel) {
-            // There was an error; don't attempt login and focus the first
-            // form field with an error.
-            focusView.requestFocus();
-        } else {
-            // Show a progress spinner and kick off a background task to
-            // perform the user login attempt.
-            LoginTask authTask = new LoginTask(this, email, password, symbol);
-            authTask.showProgress(true);
-            authTask.execute();
-            KeyboardUtils.hideSoftInput(this);
-        }
-    }
-
-    private boolean isEmailValid(String email) {
-        return email.contains("@") || email.contains("\\\\");
-    }
-
-    private boolean isPasswordValid(String password) {
-        return password.length() > 4;
     }
 
     @Override
-    public boolean dispatchTouchEvent(MotionEvent ev) {
+    public void showSoftInput() {
-
+        KeyboardUtils.showSoftInput(requestedView, this);
-        if (ev.getAction() == MotionEvent.ACTION_DOWN) {
-            touchPosition = ev.getY();
     }
-        if (ev.getAction() == MotionEvent.ACTION_UP) {
-            float releasePosition = ev.getY();
 
-            if (touchPosition - releasePosition == 0) {
+    @Override
-                View view = getCurrentFocus();
+    public void hideSoftInput() {
-                if (view != null && (ev.getAction() == MotionEvent.ACTION_UP
-                        || ev.getAction() == MotionEvent.ACTION_MOVE) && view instanceof EditText
-                        && !view.getClass().getName().startsWith("android.webkit.")) {
-
-                    int[] coordinators = new int[2];
-                    view.getLocationOnScreen(coordinators);
-                    float x = ev.getRawX() + view.getLeft() - coordinators[0];
-                    float y = ev.getRawY() + view.getTop() - coordinators[1];
-                    if (x < view.getLeft() || x > view.getRight() || y < view.getTop()
-                            || y > view.getBottom()) {
         KeyboardUtils.hideSoftInput(this);
     }
+
+    @Override
+    public void onError(String message) {
+        Snackbar.make(findViewById(R.id.login_activity_container), message,
+                Snackbar.LENGTH_LONG).show();
     }
+
+    @Override
+    public void setStepOneLoginProgress() {
+        onLoginProgressUpdate("1", getString(R.string.step_login));
     }
+
+    @Override
+    public void setStepTwoLoginProgress() {
+        onLoginProgressUpdate("2", getString(R.string.step_synchronization));
     }
-        return super.dispatchTouchEvent(ev);
+
+    @Override
+    public void openMainActivity() {
+        startActivity(MainActivity.getStartIntent(this));
+        finish();
+    }
+
+    @Override
+    public void showLoginProgress(final boolean show) {
+        int animTime = getResources().getInteger(android.R.integer.config_shortAnimTime);
+
+        loginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
+        loginFormView.animate().setDuration(animTime).alpha(
+                show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                loginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
+            }
+        });
+
+        loadingBarView.setVisibility(show ? View.VISIBLE : View.GONE);
+        loadingBarView.animate().setDuration(animTime).alpha(
+                show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationEnd(Animator animation) {
+                loadingBarView.setVisibility(show ? View.VISIBLE : View.GONE);
+            }
+        });
     }
 
     @Override
     public void onDestroy() {
         super.onDestroy();
-        updater.onDestroy(this);
+        presenter.onDestroy();
+    }
+
+    private void onLoginProgressUpdate(String step, String message) {
+        loginProgressText.setText(String.format("%1$s/2 - %2$s...", step, message));
     }
 }

app/src/main/java/io/github/wulkanowy/ui/login/LoginContract.java

@@ -0,0 +1,53 @@
+package io.github.wulkanowy.ui.login;
+
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.di.annotations.PerActivity;
+import io.github.wulkanowy.ui.base.BaseContract;
+
+public interface LoginContract {
+    interface View extends BaseContract.View {
+
+        void setErrorEmailRequired();
+
+        void setErrorPassRequired();
+
+        void setErrorSymbolRequired();
+
+        void setErrorEmailInvalid();
+
+        void setErrorPassInvalid();
+
+        void setErrorPassIncorrect();
+
+        void resetViewErrors();
+
+        void setStepOneLoginProgress();
+
+        void setStepTwoLoginProgress();
+
+        void openMainActivity();
+
+        void showLoginProgress(boolean show);
+
+        void showSoftInput();
+
+        void hideSoftInput();
+
+    }
+
+    @PerActivity
+    interface Presenter extends BaseContract.Presenter<View> {
+
+        void attemptLogin(String email, String password, String symbol);
+
+        void onStartAsync();
+
+        void onLoginProgress(int step);
+
+        void onEndAsync(boolean success, Exception exception);
+
+        void onCanceledAsync();
+
+        RepositoryContract getRepository();
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/login/LoginPresenter.java

@@ -0,0 +1,143 @@
+package io.github.wulkanowy.ui.login;
+
+import android.text.TextUtils;
+
+import java.util.LinkedHashMap;
+
+import javax.inject.Inject;
+
+import io.github.wulkanowy.api.login.AccountPermissionException;
+import io.github.wulkanowy.api.login.BadCredentialsException;
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.ui.base.BasePresenter;
+import io.github.wulkanowy.utils.AppConstant;
+
+public class LoginPresenter extends BasePresenter<LoginContract.View>
+        implements LoginContract.Presenter {
+
+    private LoginTask loginAsync;
+
+    @Inject
+    LoginPresenter(RepositoryContract repository) {
+        super(repository);
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (loginAsync != null) {
+            loginAsync.cancel(true);
+            loginAsync = null;
+        }
+    }
+
+    @Override
+    public void attemptLogin(String email, String password, String symbol) {
+        getView().resetViewErrors();
+
+        if (!isAllFieldCorrect(password, email)) {
+            getView().showSoftInput();
+            return;
+        }
+
+        if (getView().isNetworkConnected()) {
+            // Dopóki używamy AsyncTask presenter będzie musiał "wiedzieć" o AsyncTaskach
+            loginAsync = new LoginTask(this,
+                    email,
+                    password,
+                    getNormalizedSymbol(symbol));
+            loginAsync.execute();
+
+        } else {
+            getView().onNoNetworkError();
+        }
+
+        getView().hideSoftInput();
+    }
+
+    @Override
+    public void onStartAsync() {
+        getView().showLoginProgress(true);
+    }
+
+    @Override
+    public void onLoginProgress(int step) {
+        if (step == 1) {
+            getView().setStepOneLoginProgress();
+        } else if (step == 2) {
+            getView().setStepTwoLoginProgress();
+        }
+    }
+
+    @Override
+    public void onEndAsync(boolean success, Exception exception) {
+        if (success) {
+            getView().openMainActivity();
+        } else if (exception instanceof BadCredentialsException) {
+            getView().setErrorPassIncorrect();
+            getView().showSoftInput();
+            getView().showLoginProgress(false);
+        } else if (exception instanceof AccountPermissionException) {
+            getView().setErrorSymbolRequired();
+            getView().showSoftInput();
+            getView().showLoginProgress(false);
+        } else {
+            getView().onError(getRepository().getErrorLoginMessage(exception));
+            getView().showLoginProgress(false);
+        }
+
+    }
+
+    @Override
+    public void onCanceledAsync() {
+        getView().showLoginProgress(false);
+    }
+
+    private boolean isEmailValid(String email) {
+        return email.contains("@") || email.contains("\\\\");
+    }
+
+    private boolean isPasswordValid(String password) {
+        return password.length() > 4;
+    }
+
+    private String getNormalizedSymbol(String symbol) {
+        if (TextUtils.isEmpty(symbol)) {
+            return AppConstant.DEFAULT_SYMBOL;
+        }
+
+        String[] keys = getRepository().getSymbolsKeysArray();
+        String[] values = getRepository().getSymbolsValuesArray();
+        LinkedHashMap<String, String> map = new LinkedHashMap<>();
+
+        for (int i = 0; i < Math.min(keys.length, values.length); ++i) {
+            map.put(keys[i], values[i]);
+        }
+
+        if (map.containsKey(symbol)) {
+            return map.get(symbol);
+        }
+        return AppConstant.DEFAULT_SYMBOL;
+    }
+
+    private boolean isAllFieldCorrect(String password, String email) {
+        boolean correct = true;
+
+        if (TextUtils.isEmpty(password)) {
+            getView().setErrorPassRequired();
+            correct = false;
+        } else if (!isPasswordValid(password)) {
+            getView().setErrorPassInvalid();
+            correct = false;
+        }
+
+        if (TextUtils.isEmpty(email)) {
+            getView().setErrorEmailRequired();
+            correct = false;
+        } else if (!isEmailValid(email)) {
+            getView().setErrorEmailInvalid();
+            correct = false;
+        }
+        return correct;
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/login/LoginTask.java

@@ -1,64 +1,21 @@
 package io.github.wulkanowy.ui.login;
 
-import android.animation.Animator;
-import android.animation.AnimatorListenerAdapter;
-import android.app.Activity;
-import android.content.DialogInterface;
-import android.content.Intent;
 import android.os.AsyncTask;
-import android.support.design.widget.Snackbar;
-import android.support.design.widget.TextInputLayout;
-import android.support.v7.app.AlertDialog;
-import android.view.View;
-import android.widget.EditText;
-import android.widget.TextView;
 
-import com.crashlytics.android.Crashlytics;
+public class LoginTask extends AsyncTask<Void, Integer, Boolean> {
-import com.crashlytics.android.answers.Answers;
-import com.crashlytics.android.answers.CustomEvent;
 
-import java.io.IOException;
+    private String email;
-import java.lang.ref.WeakReference;
-import java.net.SocketTimeoutException;
-import java.net.UnknownHostException;
 
-import io.github.wulkanowy.R;
+    private String password;
-import io.github.wulkanowy.WulkanowyApp;
-import io.github.wulkanowy.api.login.AccountPermissionException;
-import io.github.wulkanowy.api.login.BadCredentialsException;
-import io.github.wulkanowy.api.login.NotLoggedInErrorException;
-import io.github.wulkanowy.api.login.VulcanOfflineException;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.services.jobs.FullSyncJob;
-import io.github.wulkanowy.services.sync.LoginSession;
-import io.github.wulkanowy.services.sync.VulcanSync;
-import io.github.wulkanowy.ui.main.DashboardActivity;
-import io.github.wulkanowy.utils.KeyboardUtils;
-import io.github.wulkanowy.utils.NetworkUtils;
-import io.github.wulkanowy.utils.security.CryptoException;
 
-/**
+    private String symbol;
- * Represents an asynchronous login/registration task used to authenticate
- * the user.
- */
-public class LoginTask extends AsyncTask<Void, String, Integer> {
 
-    private final String email;
+    private LoginContract.Presenter presenter;
 
-    private final String password;
+    private Exception exception;
 
-    private final String symbol;
+    LoginTask(LoginContract.Presenter presenter, String email, String password, String symbol) {
-
+        this.presenter = presenter;
-    private WeakReference<Activity> activity;
-
-    private WeakReference<View> progressView;
-
-    private WeakReference<View> loginFormView;
-
-    private WeakReference<TextView> showText;
-
-    LoginTask(Activity activity, String email, String password, String symbol) {
-        this.activity = new WeakReference<>(activity);
         this.email = email;
         this.password = password;
         this.symbol = symbol;
@@ -66,159 +23,36 @@ public class LoginTask extends AsyncTask<Void, String, Integer> {
 
     @Override
     protected void onPreExecute() {
-        showText = new WeakReference<>((TextView) activity.get().findViewById(R.id.login_progress_text));
+        presenter.onStartAsync();
     }
 
     @Override
-    protected Integer doInBackground(Void... params) {
+    protected Boolean doInBackground(Void... params) {
-        if (NetworkUtils.isOnline(activity.get())) {
-            DaoSession daoSession = ((WulkanowyApp) activity.get().getApplication()).getDaoSession();
-            VulcanSync vulcanSync = new VulcanSync(new LoginSession());
-
         try {
-                publishProgress("1", activity.get().getResources().getString(R.string.step_login));
+            publishProgress(1);
-                vulcanSync.firstLoginSignInStep(activity.get(), daoSession, email, password, symbol);
+            presenter.getRepository().loginUser(email, password, symbol);
 
-                publishProgress("2", activity.get().getResources().getString(R.string.step_synchronization));
+            publishProgress(2);
-                vulcanSync.syncAll();
+            presenter.getRepository().syncAll();
-            } catch (BadCredentialsException e) {
+        } catch (Exception e) {
-                return R.string.login_bad_credentials_text;
+            exception = e;
-            } catch (AccountPermissionException e) {
+            return false;
-                return R.string.error_bad_account_permission;
-            } catch (CryptoException e) {
-                return R.string.encrypt_failed_text;
-            } catch (UnknownHostException e) {
-                return R.string.noInternet_text;
-            } catch (SocketTimeoutException e) {
-                return R.string.generic_timeout_error;
-            } catch (NotLoggedInErrorException | IOException e) {
-                return R.string.login_denied_text;
-            } catch (VulcanOfflineException e) {
-                return R.string.error_host_offline;
-            } catch (UnsupportedOperationException e) {
-                return -1;
-            } catch (Throwable e) {
-                Crashlytics.logException(e);
-                return R.string.login_denied_text;
-            }
-
-            new FullSyncJob().scheduledJob(activity.get());
-
-            return R.string.login_accepted_text;
-
-        } else {
-            return R.string.noInternet_text;
         }
+        return true;
     }
 
     @Override
-    protected void onProgressUpdate(String... progress) {
+    protected void onProgressUpdate(Integer... progress) {
-        showText.get().setText(String.format("%1$s/2 - %2$s...", progress[0], progress[1]));
+        presenter.onLoginProgress(progress[0]);
     }
 
     @Override
-    protected void onPostExecute(final Integer messageID) {
+    protected void onPostExecute(Boolean success) {
-        showProgress(false);
+        presenter.onEndAsync(success, exception);
-
-        switch (messageID) {
-            // if success
-            case R.string.login_accepted_text:
-                logFirstLoginAction(true, activity.get().getString(messageID));
-                Intent intent = new Intent(activity.get(), DashboardActivity.class);
-                activity.get().finish();
-                activity.get().startActivity(intent);
-                break;
-
-            // if bad credentials entered
-            case R.string.login_bad_credentials_text:
-                logFirstLoginAction(false, activity.get().getString(messageID));
-                EditText passwordView = activity.get().findViewById(R.id.password);
-                passwordView.setError(activity.get().getString(R.string.error_incorrect_password));
-                passwordView.requestFocus();
-                KeyboardUtils.showSoftInput(passwordView, activity.get());
-                break;
-
-            // if no permission
-            case R.string.error_bad_account_permission:
-                logFirstLoginAction(false, activity.get().getString(messageID));
-                // Change to visible symbol input view
-                TextInputLayout symbolLayout = activity.get().findViewById(R.id.to_symbol_input_layout);
-                symbolLayout.setVisibility(View.VISIBLE);
-
-                EditText symbolView = activity.get().findViewById(R.id.symbol);
-                symbolView.setError(activity.get().getString(R.string.error_bad_account_permission));
-                symbolView.requestFocus();
-                KeyboardUtils.showSoftInput(symbolView, activity.get());
-                break;
-
-            // if rooted and SDK < 18
-            case -1:
-                logFirstLoginAction(false, "Device rooted");
-                final AlertDialog.Builder alertDialog = new AlertDialog.Builder(activity.get())
-                        .setIcon(android.R.drawable.ic_dialog_alert)
-                        .setTitle(R.string.alert_dialog_blocked_app)
-                        .setMessage(R.string.alert_dialog_blocked_app_message)
-                        .setPositiveButton(R.string.generic_dialog_close, new DialogInterface.OnClickListener() {
-                            @Override
-                            public void onClick(DialogInterface dialogInterface, int i) {
-                                dialogInterface.dismiss();
-                            }
-                        });
-                alertDialog.show();
-                break;
-
-            default:
-                logFirstLoginAction(false, activity.get().getString(messageID));
-                Snackbar.make(activity.get().findViewById(R.id.fragment_container),
-                        messageID, Snackbar.LENGTH_LONG).show();
-                break;
-        }
-    }
-
-    private void logFirstLoginAction(boolean success, String message) {
-        Answers.getInstance().logCustom(new CustomEvent("First login")
-                .putCustomAttribute("Symbol", symbol)
-                .putCustomAttribute("Success", success ? 1 : 0)
-                .putCustomAttribute("Message", message));
     }
 
     @Override
     protected void onCancelled() {
-        showProgress(false);
+        presenter.onCanceledAsync();
-    }
-
-    /**
-     * Shows the progress UI and hides the login form.
-     */
-    void showProgress(final boolean show) {
-        loginFormView = new WeakReference<>(activity.get().findViewById(R.id.login_form));
-        progressView = new WeakReference<>(activity.get().findViewById(R.id.login_progress));
-
-        int animTime = activity.get().getResources().getInteger(android.R.integer.config_shortAnimTime);
-
-        changeLoginFormVisibility(show, animTime);
-        changeProgressVisibility(show, animTime);
-    }
-
-    private void changeLoginFormVisibility(final boolean show, final int animTime) {
-        loginFormView.get().setVisibility(show ? View.GONE : View.VISIBLE);
-        loginFormView.get().animate().setDuration(animTime).alpha(
-                show ? 0 : 1).setListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                loginFormView.get().setVisibility(show ? View.GONE : View.VISIBLE);
-            }
-        });
-    }
-
-    private void changeProgressVisibility(final boolean show, final int animTime) {
-        progressView.get().setVisibility(show ? View.VISIBLE : View.GONE);
-        progressView.get().animate().setDuration(animTime).alpha(
-                show ? 1 : 0).setListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                progressView.get().setVisibility(show ? View.VISIBLE : View.GONE);
-            }
-        });
     }
 }

app/src/main/java/io/github/wulkanowy/ui/main/AbstractFragment.java

@@ -1,189 +0,0 @@
-package io.github.wulkanowy.ui.main;
-
-
-import android.app.Activity;
-import android.content.Context;
-import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-import android.support.v4.app.Fragment;
-import android.support.v4.widget.SwipeRefreshLayout;
-import android.support.v7.widget.RecyclerView;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.Toast;
-
-import java.lang.ref.WeakReference;
-import java.util.ArrayList;
-import java.util.List;
-
-import eu.davidea.flexibleadapter.FlexibleAdapter;
-import eu.davidea.flexibleadapter.common.SmoothScrollLinearLayoutManager;
-import eu.davidea.flexibleadapter.items.AbstractExpandableHeaderItem;
-import io.github.wulkanowy.R;
-import io.github.wulkanowy.WulkanowyApp;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.utils.NetworkUtils;
-
-public abstract class AbstractFragment<T extends AbstractExpandableHeaderItem> extends Fragment
-        implements AsyncResponse<T> {
-
-    private FlexibleAdapter<T> flexibleAdapter;
-
-    private List<T> itemList = new ArrayList<>();
-
-    private WeakReference<Activity> activityWeakReference;
-
-    private SwipeRefreshLayout swipeRefreshLayout;
-
-    private RecyclerView recyclerViewLayout;
-
-    private DaoSession daoSession;
-
-    private long userId;
-
-    public AbstractFragment() {
-        //empty constructor for fragments
-    }
-
-    public long getUserId() {
-        return userId;
-    }
-
-    public SwipeRefreshLayout getRefreshLayoutView() {
-        return swipeRefreshLayout;
-    }
-
-    public DaoSession getDaoSession() {
-        return daoSession;
-    }
-
-    public Activity getActivityWeakReference() {
-        return activityWeakReference.get();
-    }
-
-    public abstract int getLayoutId();
-
-    public abstract int getRecyclerViewId();
-
-    public abstract int getLoadingBarId();
-
-    public abstract int getRefreshLayoutId();
-
-    public abstract List<T> getItems() throws Exception;
-
-    public abstract void onRefresh() throws Exception;
-
-    public abstract void onPostRefresh(int stringResult);
-
-    @Override
-    public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setRetainInstance(true);
-    }
-
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        View view = inflater.inflate(getLayoutId(), container, false);
-        recyclerViewLayout = view.findViewById(getRecyclerViewId());
-        swipeRefreshLayout = view.findViewById(getRefreshLayoutId());
-        setUpRefreshLayout(swipeRefreshLayout);
-        return view;
-    }
-
-    @Override
-    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
-        super.onActivityCreated(savedInstanceState);
-
-        if (getActivity() != null && getView() != null) {
-            activityWeakReference = new WeakReference<Activity>(getActivity());
-            daoSession = ((WulkanowyApp) getActivity().getApplication()).getDaoSession();
-            userId = getActivity().getSharedPreferences("LoginData", Context.MODE_PRIVATE)
-                    .getLong("userId", 0);
-
-            if (itemList != null)
-                if (itemList.isEmpty()) {
-                    flexibleAdapter = getFlexibleAdapter(itemList);
-                    setAdapterOnRecyclerView(recyclerViewLayout);
-                    if (getUserVisibleHint()) {
-                        new DatabaseQueryTask(this).execute();
-                    }
-                } else {
-                    setAdapterOnRecyclerView(recyclerViewLayout);
-                    setLoadingBarInvisible(getView());
-                }
-        }
-    }
-
-    @Override
-    public void setUserVisibleHint(boolean isVisibleToUser) {
-        super.setUserVisibleHint(isVisibleToUser);
-        if (isResumed() && isVisibleToUser && flexibleAdapter.getItemCount() == 0) {
-            new DatabaseQueryTask(this).execute();
-        }
-    }
-
-    @Override
-    public void onQuarryProcessFinish(@NonNull List<T> resultItemList) {
-        itemList = resultItemList;
-        flexibleAdapter = getFlexibleAdapter(itemList);
-        setAdapterOnRecyclerView(recyclerViewLayout);
-        if (getView() != null) {
-            setLoadingBarInvisible(getView());
-        }
-    }
-
-    @Override
-    public void onRefreshProcessFinish(@Nullable List<T> resultItemList, int stringEventId) {
-        if (resultItemList != null) {
-            itemList = resultItemList;
-            updateDataInRecyclerView();
-        }
-        onPostRefresh(stringEventId);
-        getRefreshLayoutView().setRefreshing(false);
-    }
-
-    @NonNull
-    protected FlexibleAdapter<T> getFlexibleAdapter(@NonNull List<T> itemList) {
-        return new FlexibleAdapter<>(itemList)
-                .setAutoCollapseOnExpand(true)
-                .setAutoScrollOnExpand(true)
-                .expandItemsAtStartUp();
-    }
-
-    @NonNull
-    private SwipeRefreshLayout.OnRefreshListener getDefaultRefreshListener() {
-        return new SwipeRefreshLayout.OnRefreshListener() {
-            @Override
-            public void onRefresh() {
-                if (NetworkUtils.isOnline(getContext())) {
-                    new RefreshTask(AbstractFragment.this).execute();
-                } else {
-                    Toast.makeText(getContext(), R.string.noInternet_text, Toast.LENGTH_SHORT).show();
-                    swipeRefreshLayout.setRefreshing(false);
-                }
-            }
-        };
-    }
-
-    private void updateDataInRecyclerView() {
-        flexibleAdapter.updateDataSet(itemList);
-        setAdapterOnRecyclerView(recyclerViewLayout);
-    }
-
-    protected void setUpRefreshLayout(@NonNull SwipeRefreshLayout swipeRefreshLayout) {
-        swipeRefreshLayout.setColorSchemeResources(android.R.color.black);
-        swipeRefreshLayout.setOnRefreshListener(getDefaultRefreshListener());
-    }
-
-    protected final void setLoadingBarInvisible(@NonNull View mainView) {
-        mainView.findViewById(getLoadingBarId()).setVisibility(View.INVISIBLE);
-    }
-
-    protected void setAdapterOnRecyclerView(@NonNull RecyclerView recyclerView) {
-        recyclerView.setLayoutManager(new SmoothScrollLinearLayoutManager(getActivityWeakReference()));
-        recyclerView.setAdapter(flexibleAdapter);
-    }
-}

app/src/main/java/io/github/wulkanowy/ui/main/AsyncResponse.java

@@ -1,14 +0,0 @@
-package io.github.wulkanowy.ui.main;
-
-import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
-
-import java.util.List;
-
-import eu.davidea.flexibleadapter.items.AbstractExpandableHeaderItem;
-
-public interface AsyncResponse<T extends AbstractExpandableHeaderItem> {
-    void onQuarryProcessFinish(@NonNull List<T> resultItemList);
-
-    void onRefreshProcessFinish(@Nullable List<T> resultItemList, int stringErrorId);
-}

app/src/main/java/io/github/wulkanowy/ui/main/DashboardActivity.java

@@ -1,133 +0,0 @@
-package io.github.wulkanowy.ui.main;
-
-import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.design.widget.BottomNavigationView;
-import android.support.v4.app.Fragment;
-import android.support.v4.app.FragmentTransaction;
-import android.support.v7.app.AppCompatActivity;
-import android.view.MenuItem;
-
-import io.github.wulkanowy.R;
-import io.github.wulkanowy.services.Updater;
-import io.github.wulkanowy.ui.main.attendance.AttendanceFragment;
-import io.github.wulkanowy.ui.main.board.BoardFragment;
-import io.github.wulkanowy.ui.main.grades.GradesFragment;
-import io.github.wulkanowy.ui.main.timetable.TimetableFragment;
-
-public class DashboardActivity extends AppCompatActivity {
-
-    private Fragment currentFragment;
-
-    private GradesFragment gradesFragment = new GradesFragment();
-
-    private AttendanceFragment attendanceFragment = new AttendanceFragment();
-
-    private BoardFragment boardFragment = new BoardFragment();
-
-    private TimetableFragment timetableFragment = new TimetableFragment();
-
-    private Updater updater;
-
-    private boolean showed;
-
-    private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
-            = new BottomNavigationView.OnNavigationItemSelectedListener() {
-
-        @Override
-        public boolean onNavigationItemSelected(@NonNull MenuItem item) {
-            switch (item.getItemId()) {
-                case R.id.navigation_marks:
-                    setTitle(R.string.grades_text);
-                    currentFragment = gradesFragment;
-                    break;
-
-                case R.id.navigation_attendance:
-                    setTitle(R.string.attendance_text);
-                    currentFragment = attendanceFragment;
-                    break;
-
-                case R.id.navigation_lessonplan:
-                    setTitle(R.string.lessonplan_text);
-                    currentFragment = timetableFragment;
-                    break;
-
-                case R.id.navigation_dashboard:
-                default:
-                    setTitle(R.string.dashboard_text);
-                    currentFragment = boardFragment;
-                    break;
-            }
-            FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
-            transaction.replace(R.id.fragment_container, currentFragment);
-            transaction.commit();
-            return true;
-        }
-    };
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_dashboard);
-
-        BottomNavigationView navigation = findViewById(R.id.navigation);
-        navigation.setSelectedItemId(R.id.navigation_marks);
-        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
-
-        if (savedInstanceState != null) {
-            currentFragment = getSupportFragmentManager().getFragment(savedInstanceState, "currentFragment");
-            setTitle(savedInstanceState.getString("activityTitle"));
-        } else {
-            currentFragment = gradesFragment;
-            setTitle(R.string.grades_text);
-        }
-
-        int cardID = getIntent().getIntExtra("cardID", 0);
-
-        if (cardID == 1) {
-            currentFragment = gradesFragment;
-        }
-
-        getSupportFragmentManager().beginTransaction()
-                .replace(R.id.fragment_container, currentFragment).commit();
-    }
-
-    @Override
-    protected void onStart() {
-        super.onStart();
-        if (!showed) {
-            updater = new Updater(this).checkForUpdates();
-            showed = true;
-        }
-    }
-
-    @Override
-    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
-        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
-        updater.onRequestPermissionsResult(requestCode, grantResults);
-    }
-
-    @Override
-    public void onSaveInstanceState(Bundle outState) {
-        super.onSaveInstanceState(outState);
-        outState.putString("activityTitle", getTitle().toString());
-        getSupportFragmentManager().putFragment(outState, "currentFragment", currentFragment);
-    }
-
-    public void onBackPressed() {
-
-        BottomNavigationView navigation = findViewById(R.id.navigation);
-
-        if (navigation.getSelectedItemId() != R.id.navigation_dashboard) {
-            navigation.setSelectedItemId(R.id.navigation_dashboard);
-        } else if (navigation.getSelectedItemId() == R.id.navigation_dashboard) {
-            moveTaskToBack(true);
-        }
-    }
-
-    @Override
-    public void onDestroy() {
-        super.onDestroy();
-        updater.onDestroy(this);
-    }
-}

app/src/main/java/io/github/wulkanowy/ui/main/DatabaseQueryTask.java

@@ -1,30 +0,0 @@
-package io.github.wulkanowy.ui.main;
-
-import android.os.AsyncTask;
-
-import java.util.List;
-
-public class DatabaseQueryTask extends AsyncTask<Void, Void, List<?>> {
-
-    private AbstractFragment abstractFragment;
-
-    public DatabaseQueryTask(AbstractFragment<?> abstractFragment) {
-        this.abstractFragment = abstractFragment;
-    }
-
-    @Override
-    protected List<?> doInBackground(Void... voids) {
-        try {
-            return abstractFragment.getItems();
-        } catch (Exception e) {
-            return null;
-        }
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    protected void onPostExecute(List<?> objects) {
-        super.onPostExecute(objects);
-        abstractFragment.onQuarryProcessFinish(objects);
-    }
-}

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

@@ -0,0 +1,153 @@
+package io.github.wulkanowy.ui.main;
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Color;
+import android.os.Bundle;
+import android.support.v7.app.ActionBar;
+import android.view.View;
+
+import com.aurelhubert.ahbottomnavigation.AHBottomNavigation;
+import com.aurelhubert.ahbottomnavigation.AHBottomNavigationItem;
+import com.aurelhubert.ahbottomnavigation.AHBottomNavigationViewPager;
+
+import javax.inject.Inject;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.services.SyncJob;
+import io.github.wulkanowy.ui.base.BaseActivity;
+import io.github.wulkanowy.ui.main.dashboard.DashboardFragment;
+import io.github.wulkanowy.ui.main.grades.GradesFragment;
+import io.github.wulkanowy.ui.main.timetable.TimetableFragment;
+
+public class MainActivity extends BaseActivity implements MainContract.View,
+        AHBottomNavigation.OnTabSelectedListener, OnFragmentIsReadyListener {
+
+    private int initTabPosition = 0;
+
+    @BindView(R.id.main_activity_nav)
+    AHBottomNavigation bottomNavigation;
+
+    @BindView(R.id.main_activity_view_pager)
+    AHBottomNavigationViewPager viewPager;
+
+    @BindView(R.id.main_activity_progress_bar)
+    View progressBar;
+
+    @Inject
+    MainPagerAdapter pagerAdapter;
+
+    @Inject
+    MainContract.Presenter presenter;
+
+    public static Intent getStartIntent(Context context) {
+        return new Intent(context, MainActivity.class);
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        initTabPosition = getIntent().getIntExtra(SyncJob.EXTRA_INTENT_KEY, initTabPosition);
+
+        getActivityComponent().inject(this);
+        setButterKnife(ButterKnife.bind(this));
+
+        presenter.onStart(this);
+
+        initiationViewPager();
+        initiationBottomNav();
+    }
+
+    @Override
+    public void showProgressBar(boolean show) {
+        progressBar.setVisibility(show ? View.VISIBLE : View.INVISIBLE);
+        viewPager.setVisibility(show ? View.INVISIBLE : View.VISIBLE);
+        bottomNavigation.setVisibility(show ? View.INVISIBLE : View.VISIBLE);
+    }
+
+    @Override
+    public void showActionBar() {
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.show();
+        }
+    }
+
+    @Override
+    public void hideActionBar() {
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.hide();
+        }
+    }
+
+    @Override
+    public boolean onTabSelected(int position, boolean wasSelected) {
+        presenter.onTabSelected(position, wasSelected);
+        return true;
+    }
+
+    @Override
+    public void setCurrentPage(int position) {
+        viewPager.setCurrentItem(position, false);
+    }
+
+    @Override
+    public void onFragmentIsReady() {
+        presenter.onFragmentIsReady();
+    }
+
+    private void initiationBottomNav() {
+        bottomNavigation.addItem(new AHBottomNavigationItem(
+                getString(R.string.grades_text),
+                getResources().getDrawable(R.drawable.icon_grade_26dp)
+        ));
+        bottomNavigation.addItem(new AHBottomNavigationItem(
+                getString(R.string.attendance_text),
+                getResources().getDrawable(R.drawable.icon_attendance_24dp)
+        ));
+        bottomNavigation.addItem(new AHBottomNavigationItem(
+                getString(R.string.dashboard_text),
+                getResources().getDrawable(R.drawable.ic_dashboard_black_24dp)
+        ));
+        bottomNavigation.addItem(new AHBottomNavigationItem(
+                getString(R.string.lessonplan_text),
+                getResources().getDrawable(R.drawable.icon_lessonplan_24dp)
+        ));
+        bottomNavigation.addItem(new AHBottomNavigationItem(
+                getString(R.string.settings_text),
+                getResources().getDrawable(R.drawable.icon_other_24dp)
+        ));
+
+        bottomNavigation.setAccentColor(getResources().getColor(R.color.colorPrimary));
+        bottomNavigation.setInactiveColor(Color.BLACK);
+        bottomNavigation.setBackgroundColor(getResources().getColor(R.color.colorBackgroundBottomNavi));
+        bottomNavigation.setTitleState(AHBottomNavigation.TitleState.ALWAYS_SHOW);
+        bottomNavigation.setOnTabSelectedListener(this);
+        bottomNavigation.setCurrentItem(initTabPosition);
+        bottomNavigation.setBehaviorTranslationEnabled(false);
+    }
+
+    private void initiationViewPager() {
+        pagerAdapter.addFragment(new GradesFragment());
+        pagerAdapter.addFragment(new DashboardFragment());
+        pagerAdapter.addFragment(new DashboardFragment());
+        pagerAdapter.addFragment(new TimetableFragment());
+        pagerAdapter.addFragment(new DashboardFragment());
+
+        viewPager.setPagingEnabled(false);
+        viewPager.setAdapter(pagerAdapter);
+        viewPager.setOffscreenPageLimit(4);
+        viewPager.setCurrentItem(initTabPosition, false);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        presenter.onDestroy();
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/MainContract.java

@@ -0,0 +1,26 @@
+package io.github.wulkanowy.ui.main;
+
+import io.github.wulkanowy.di.annotations.PerActivity;
+import io.github.wulkanowy.ui.base.BaseContract;
+
+public interface MainContract {
+
+    interface View extends BaseContract.View {
+
+        void setCurrentPage(int position);
+
+        void showProgressBar(boolean show);
+
+        void showActionBar();
+
+        void hideActionBar();
+    }
+
+    @PerActivity
+    interface Presenter extends BaseContract.Presenter<View> {
+
+        void onTabSelected(int position, boolean wasSelected);
+
+        void onFragmentIsReady();
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/MainPagerAdapter.java

@@ -0,0 +1,31 @@
+package io.github.wulkanowy.ui.main;
+
+import android.support.v4.app.Fragment;
+import android.support.v4.app.FragmentManager;
+import android.support.v4.app.FragmentStatePagerAdapter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainPagerAdapter extends FragmentStatePagerAdapter {
+
+    private List<Fragment> fragmentList = new ArrayList<>();
+
+    public MainPagerAdapter(FragmentManager fragmentManager) {
+        super(fragmentManager);
+    }
+
+    void addFragment(Fragment fragment) {
+        fragmentList.add(fragment);
+    }
+
+    @Override
+    public Fragment getItem(int position) {
+        return fragmentList.get(position);
+    }
+
+    @Override
+    public int getCount() {
+        return fragmentList.size();
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/MainPresenter.java

@@ -0,0 +1,44 @@
+package io.github.wulkanowy.ui.main;
+
+
+import javax.inject.Inject;
+
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.ui.base.BasePresenter;
+
+public class MainPresenter extends BasePresenter<MainContract.View>
+        implements MainContract.Presenter {
+
+    private int fragmentCount = 0;
+
+    @Inject
+    MainPresenter(RepositoryContract repository) {
+        super(repository);
+    }
+
+    @Override
+    public void onStart(MainContract.View view) {
+        super.onStart(view);
+        getView().showProgressBar(true);
+        getView().hideActionBar();
+    }
+
+    @Override
+    public void onTabSelected(int position, boolean wasSelected) {
+        if (!wasSelected) {
+            getView().setCurrentPage(position);
+        }
+    }
+
+    @Override
+    public void onFragmentIsReady() {
+        if (fragmentCount < 5) {
+            fragmentCount++;
+        }
+
+        if (fragmentCount == 5) {
+            getView().showActionBar();
+            getView().showProgressBar(false);
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/OnFragmentIsReadyListener.java

@@ -0,0 +1,6 @@
+package io.github.wulkanowy.ui.main;
+
+public interface OnFragmentIsReadyListener {
+
+    void onFragmentIsReady();
+}

app/src/main/java/io/github/wulkanowy/ui/main/RefreshTask.java

@@ -1,56 +0,0 @@
-package io.github.wulkanowy.ui.main;
-
-import android.os.AsyncTask;
-import android.util.Log;
-
-import java.net.SocketTimeoutException;
-import java.net.UnknownHostException;
-import java.util.List;
-
-import io.github.wulkanowy.R;
-import io.github.wulkanowy.api.login.VulcanOfflineException;
-
-public class RefreshTask extends AsyncTask<Void, Void, List<?>> {
-
-    public static final String DEBUG_TAG = "RefreshTask";
-
-    private int stringEventId = 0;
-
-    private AbstractFragment abstractFragment;
-
-    public RefreshTask(AbstractFragment abstractFragment) {
-        this.abstractFragment = abstractFragment;
-    }
-
-    @Override
-    protected List<?> doInBackground(Void... voids) {
-        try {
-            abstractFragment.onRefresh();
-            return abstractFragment.getItems();
-        } catch (UnknownHostException e) {
-            stringEventId = R.string.noInternet_text;
-            Log.i(DEBUG_TAG, "Synchronization is failed because occur problem with internet",
-                    e.getCause());
-            return null;
-        } catch (SocketTimeoutException e) {
-            stringEventId = R.string.generic_timeout_error;
-            Log.i(DEBUG_TAG, "Too long wait for connection with internet", e);
-            return null;
-        } catch (VulcanOfflineException e) {
-            stringEventId = R.string.error_host_offline;
-            Log.i(DEBUG_TAG, "VULCAN services is offline");
-            return null;
-        } catch (Exception e) {
-            stringEventId = R.string.refresh_error_text;
-            Log.e(DEBUG_TAG, "There was a sync problem", e);
-            return null;
-        }
-    }
-
-    @SuppressWarnings("unchecked")
-    @Override
-    protected void onPostExecute(List<?> objects) {
-        super.onPostExecute(objects);
-        abstractFragment.onRefreshProcessFinish(objects, stringEventId);
-    }
-}

app/src/main/java/io/github/wulkanowy/ui/main/attendance/AttendanceContract.java

@@ -0,0 +1,23 @@
+package io.github.wulkanowy.ui.main.attendance;
+
+import io.github.wulkanowy.di.annotations.PerFragment;
+import io.github.wulkanowy.ui.base.BaseContract;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
+
+public interface AttendanceContract {
+
+    interface View extends BaseContract.View {
+
+        void setActivityTitle();
+
+        boolean isMenuVisible();
+    }
+
+    @PerFragment
+    interface Presenter extends BaseContract.Presenter<View> {
+
+        void onStart(View view, OnFragmentIsReadyListener listener);
+
+        void onFragmentVisible(boolean isVisible);
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/attendance/AttendanceFragment.java

@@ -2,18 +2,58 @@ package io.github.wulkanowy.ui.main.attendance;
 
 import android.os.Bundle;
 import android.support.annotation.NonNull;
-import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
-import io.github.wulkanowy.R;
+import javax.inject.Inject;
 
-public class AttendanceFragment extends Fragment {
+import butterknife.ButterKnife;
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.di.component.FragmentComponent;
+import io.github.wulkanowy.ui.base.BaseFragment;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
+
+public class AttendanceFragment extends BaseFragment implements AttendanceContract.View {
+
+    @Inject
+    AttendanceContract.Presenter presenter;
+
+    public AttendanceFragment() {
+        // empty constructor for fragment
+    }
 
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_attendance, container, false);
+        View view = inflater.inflate(R.layout.fragment_attendance, container, false);
+
+        FragmentComponent component = getFragmentComponent();
+        if (component != null) {
+            component.inject(this);
+            setButterKnife(ButterKnife.bind(this, view));
+            presenter.onStart(this, (OnFragmentIsReadyListener) getActivity());
+        }
+
+        return view;
+    }
+
+    @Override
+    public void setMenuVisibility(boolean menuVisible) {
+        super.setMenuVisibility(menuVisible);
+        if (presenter != null) {
+            presenter.onFragmentVisible(menuVisible);
+        }
+    }
+
+    @Override
+    public void setActivityTitle() {
+        setTitle(getString(R.string.dashboard_text));
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        presenter.onDestroy();
     }
 }

app/src/main/java/io/github/wulkanowy/ui/main/attendance/AttendancePresenter.java

@@ -0,0 +1,37 @@
+package io.github.wulkanowy.ui.main.attendance;
+
+import javax.inject.Inject;
+
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.ui.base.BasePresenter;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
+
+public class AttendancePresenter extends BasePresenter<AttendanceContract.View>
+        implements AttendanceContract.Presenter {
+
+    private OnFragmentIsReadyListener listener;
+
+    @Inject
+    AttendancePresenter(RepositoryContract repository) {
+        super(repository);
+    }
+
+    @Override
+    public void onStart(AttendanceContract.View view, OnFragmentIsReadyListener listener) {
+        super.onStart(view);
+        this.listener = listener;
+
+        if (getView().isMenuVisible()) {
+            getView().setActivityTitle();
+        }
+
+        this.listener.onFragmentIsReady();
+    }
+
+    @Override
+    public void onFragmentVisible(boolean isVisible) {
+        if (isVisible) {
+            getView().setActivityTitle();
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/board/BoardFragment.java

@@ -1,19 +0,0 @@
-package io.github.wulkanowy.ui.main.board;
-
-import android.os.Bundle;
-import android.support.annotation.NonNull;
-import android.support.v4.app.Fragment;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-
-import io.github.wulkanowy.R;
-
-public class BoardFragment extends Fragment {
-
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
-                             Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.fragment_board, container, false);
-    }
-}

app/src/main/java/io/github/wulkanowy/ui/main/dashboard/DashboardContract.java

@@ -0,0 +1,23 @@
+package io.github.wulkanowy.ui.main.dashboard;
+
+import io.github.wulkanowy.di.annotations.PerActivity;
+import io.github.wulkanowy.ui.base.BaseContract;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
+
+public interface DashboardContract {
+
+    interface View extends BaseContract.View {
+
+        void setActivityTitle();
+
+        boolean isMenuVisible();
+    }
+
+    @PerActivity
+    interface Presenter extends BaseContract.Presenter<View> {
+
+        void onStart(View view, OnFragmentIsReadyListener listener);
+
+        void onFragmentVisible(boolean isVisible);
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/dashboard/DashboardFragment.java

@@ -0,0 +1,48 @@
+package io.github.wulkanowy.ui.main.dashboard;
+
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import javax.inject.Inject;
+
+import butterknife.ButterKnife;
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.di.component.FragmentComponent;
+import io.github.wulkanowy.ui.base.BaseFragment;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
+
+public class DashboardFragment extends BaseFragment implements DashboardContract.View {
+
+    @Inject
+    DashboardContract.Presenter presenter;
+
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_board, container, false);
+
+        FragmentComponent component = getFragmentComponent();
+        if (component != null) {
+            component.inject(this);
+            setButterKnife(ButterKnife.bind(this, view));
+            presenter.onStart(this, (OnFragmentIsReadyListener) getActivity());
+        }
+        return view;
+    }
+
+    @Override
+    public void setMenuVisibility(boolean menuVisible) {
+        super.setMenuVisibility(menuVisible);
+        if (presenter != null) {
+            presenter.onFragmentVisible(menuVisible);
+        }
+    }
+
+    @Override
+    public void setActivityTitle() {
+        setTitle(getString(R.string.dashboard_text));
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/dashboard/DashboardPresenter.java

@@ -0,0 +1,37 @@
+package io.github.wulkanowy.ui.main.dashboard;
+
+import javax.inject.Inject;
+
+import io.github.wulkanowy.data.RepositoryContract;
+import io.github.wulkanowy.ui.base.BasePresenter;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
+
+public class DashboardPresenter extends BasePresenter<DashboardContract.View>
+        implements DashboardContract.Presenter {
+
+    private OnFragmentIsReadyListener listener;
+
+    @Inject
+    DashboardPresenter(RepositoryContract repository) {
+        super(repository);
+    }
+
+    @Override
+    public void onStart(DashboardContract.View view, OnFragmentIsReadyListener listener) {
+        super.onStart(view);
+        this.listener = listener;
+
+        if (getView().isMenuVisible()) {
+            getView().setActivityTitle();
+        }
+
+        this.listener.onFragmentIsReady();
+    }
+
+    @Override
+    public void onFragmentVisible(boolean isVisible) {
+        if (isVisible) {
+            getView().setActivityTitle();
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/grades/GradeHeaderItem.java

@@ -0,0 +1,117 @@
+package io.github.wulkanowy.ui.main.grades;
+
+
+import android.content.res.Resources;
+import android.view.View;
+import android.widget.TextView;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import org.apache.commons.lang3.builder.HashCodeBuilder;
+
+import java.util.List;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import eu.davidea.flexibleadapter.FlexibleAdapter;
+import eu.davidea.flexibleadapter.items.AbstractExpandableHeaderItem;
+import eu.davidea.viewholders.ExpandableViewHolder;
+import io.github.wulkanowy.R;
+import io.github.wulkanowy.data.db.dao.entities.Subject;
+import io.github.wulkanowy.utils.AverageCalculator;
+
+public class GradeHeaderItem
+        extends AbstractExpandableHeaderItem<GradeHeaderItem.HeaderViewHolder, GradesSubItem> {
+
+    private Subject subject;
+
+    GradeHeaderItem(Subject subject) {
+        this.subject = subject;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+
+        if (o == null || getClass() != o.getClass()) return false;
+
+        GradeHeaderItem that = (GradeHeaderItem) o;
+
+        return new EqualsBuilder()
+                .append(subject, that.subject)
+                .isEquals();
+    }
+
+    @Override
+    public int hashCode() {
+        return new HashCodeBuilder(17, 37)
+                .append(subject)
+                .toHashCode();
+    }
+
+    @Override
+    public int getLayoutRes() {
+        return R.layout.grade_header;
+    }
+
+    @Override
+    public HeaderViewHolder createViewHolder(View view, FlexibleAdapter adapter) {
+        return new HeaderViewHolder(view, adapter);
+    }
+
+    @Override
+    public void bindViewHolder(FlexibleAdapter adapter, HeaderViewHolder holder, int position, List payloads) {
+        holder.onBind(subject, getSubItems());
+    }
+
+    static class HeaderViewHolder extends ExpandableViewHolder {
+
+        @BindView(R.id.grade_header_subject_text)
+        TextView subjectName;
+
+        @BindView(R.id.grade_header_average_text)
+        TextView averageText;
+
+        @BindView(R.id.grade_header_number_of_grade_text)
+        TextView numberText;
+
+        @BindView(R.id.grade_header_alert_image)
+        View alertImage;
+
+        Resources resources;
+
+        HeaderViewHolder(View view, FlexibleAdapter adapter) {
+            super(view, adapter);
+            ButterKnife.bind(this, view);
+            resources = view.getResources();
+            view.setOnClickListener(this);
+        }
+
+        void onBind(Subject item, List<GradesSubItem> subItems) {
+            subjectName.setText(item.getName());
+            numberText.setText(resources.getQuantityString(R.plurals.numberOfGradesPlurals,
+                    subItems.size(), subItems.size()));
+            averageText.setText(getGradesAverageString(item));
+            alertImage.setVisibility(isSubItemsRead(subItems) ? View.INVISIBLE : View.VISIBLE);
+            alertImage.setTag(item.getName());
+        }
+
+        private boolean isSubItemsRead(List<GradesSubItem> subItems) {
+            boolean isRead = true;
+
+            for (GradesSubItem item : subItems) {
+                isRead = item.getGrade().getRead();
+            }
+            return isRead;
+        }
+
+        private String getGradesAverageString(Subject item) {
+            float average = AverageCalculator.calculate(item.getGradeList());
+
+            if (average < 0) {
+                return resources.getString(R.string.info_no_average);
+            } else {
+                return resources.getString(R.string.info_average_grades, average);
+            }
+        }
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/grades/GradesAdapter.java

@@ -1,183 +0,0 @@
-package io.github.wulkanowy.ui.main.grades;
-
-
-import android.app.Activity;
-import android.app.DialogFragment;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ImageView;
-import android.widget.TextView;
-
-import com.thoughtbot.expandablerecyclerview.ExpandableRecyclerViewAdapter;
-import com.thoughtbot.expandablerecyclerview.models.ExpandableGroup;
-import com.thoughtbot.expandablerecyclerview.viewholders.ChildViewHolder;
-import com.thoughtbot.expandablerecyclerview.viewholders.GroupViewHolder;
-
-import java.lang.ref.WeakReference;
-import java.util.List;
-
-import io.github.wulkanowy.R;
-import io.github.wulkanowy.db.dao.entities.Grade;
-import io.github.wulkanowy.utils.AverageCalculator;
-
-public class GradesAdapter extends ExpandableRecyclerViewAdapter<GradesAdapter.SubjectViewHolder, GradesAdapter.GradeViewHolder> {
-
-    private static int numberOfNotReadGrade;
-
-    private Activity activity;
-
-    public GradesAdapter(List<? extends ExpandableGroup> groups, Activity activity) {
-        super(groups);
-        this.activity = activity;
-    }
-
-    @Override
-    public SubjectViewHolder onCreateGroupViewHolder(ViewGroup parent, int viewType) {
-        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.subject_item, parent, false);
-        return new SubjectViewHolder(view, activity);
-    }
-
-    @Override
-    public GradeViewHolder onCreateChildViewHolder(ViewGroup child, int viewType) {
-        View view = LayoutInflater.from(child.getContext()).inflate(R.layout.grade_item, child, false);
-        return new GradeViewHolder(view, activity);
-    }
-
-    @Override
-    public void onBindGroupViewHolder(SubjectViewHolder holder, int flatPosition, ExpandableGroup group) {
-        holder.bind(group);
-    }
-
-    @Override
-    public void onBindChildViewHolder(GradeViewHolder holder, int flatPosition, ExpandableGroup group, int childIndex) {
-        holder.bind((Grade) group.getItems().get(childIndex));
-    }
-
-    public static class SubjectViewHolder extends GroupViewHolder {
-
-        private WeakReference<Activity> activity;
-
-        private TextView subjectName;
-
-        private TextView numberOfGrades;
-
-        private TextView averageGrades;
-
-        private ImageView subjectAlertNewGrades;
-
-        public SubjectViewHolder(View itemView, Activity activity) {
-            super(itemView);
-            this.activity = new WeakReference<>(activity);
-
-            subjectName = itemView.findViewById(R.id.subject_text);
-            numberOfGrades = itemView.findViewById(R.id.subject_number_of_grades);
-            subjectAlertNewGrades = itemView.findViewById(R.id.subject_new_grades_alert);
-            averageGrades = itemView.findViewById(R.id.subject_grades_average);
-        }
-
-        @SuppressWarnings("unchecked")
-        public void bind(ExpandableGroup group) {
-            int volumeGrades = group.getItemCount();
-            List<Grade> gradeList = group.getItems();
-            float average = AverageCalculator.calculate(gradeList);
-
-            itemView.setTag(group.getTitle());
-
-            if (average < 0) {
-                averageGrades.setText(R.string.info_no_average);
-            } else {
-                averageGrades.setText(activity.get().getResources().getString(R.string.info_average_grades, average));
-            }
-            subjectName.setText(group.getTitle());
-            numberOfGrades.setText(activity.get().getResources().getQuantityString(R.plurals.numberOfGradesPlurals, volumeGrades, volumeGrades));
-
-            for (Grade grade : gradeList) {
-                if (!grade.getRead()) {
-                    subjectAlertNewGrades.setVisibility(View.VISIBLE);
-                } else {
-                    subjectAlertNewGrades.setVisibility(View.INVISIBLE);
-                }
-            }
-        }
-    }
-
-    public static class GradeViewHolder extends ChildViewHolder {
-
-        private WeakReference<Activity> activity;
-
-        private TextView gradeValue;
-
-        private TextView descriptionGrade;
-
-        private TextView dateGrade;
-
-        private ImageView alertNewGrade;
-
-        private View itemView;
-
-        private Grade gradeItem;
-
-        public GradeViewHolder(View itemView, Activity activity) {
-            super(itemView);
-            this.itemView = itemView;
-            this.activity = new WeakReference<>(activity);
-
-            gradeValue = itemView.findViewById(R.id.grade_text);
-            descriptionGrade = itemView.findViewById(R.id.description_grade_text);
-            dateGrade = itemView.findViewById(R.id.grade_date_text);
-            alertNewGrade = itemView.findViewById(R.id.grade_new_grades_alert);
-        }
-
-        public void bind(Grade grade) {
-            gradeValue.setText(grade.getValue());
-            gradeValue.setBackgroundResource(grade.getValueColor());
-            dateGrade.setText(grade.getDate());
-            gradeItem = grade;
-
-            if (grade.getDescription() == null || "".equals(grade.getDescription())) {
-                if (!"".equals(grade.getSymbol())) {
-                    descriptionGrade.setText(grade.getSymbol());
-                } else {
-                    descriptionGrade.setText(R.string.noDescription_text);
-                }
-            } else {
-                descriptionGrade.setText(grade.getDescription());
-            }
-
-            if (gradeItem.getRead()) {
-                alertNewGrade.setVisibility(View.INVISIBLE);
-            } else {
-                alertNewGrade.setVisibility(View.VISIBLE);
-                numberOfNotReadGrade++;
-            }
-
-            itemView.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    GradesDialogFragment gradesDialogFragment = GradesDialogFragment.newInstance(gradeItem);
-                    gradesDialogFragment.setStyle(DialogFragment.STYLE_NO_TITLE, 0);
-                    gradesDialogFragment.show(activity.get().getFragmentManager(), gradeItem.toString());
-
-                    if (!gradeItem.getRead()) {
-                        numberOfNotReadGrade--;
-                    }
-
-                    if (numberOfNotReadGrade == 0) {
-                        View subjectView = activity.get().findViewById(R.id.subject_grade_recycler).findViewWithTag(gradeItem.getSubject());
-                        if (subjectView != null) {
-                            View subjectAlertNewGrade = subjectView.findViewById(R.id.subject_new_grades_alert);
-                            subjectAlertNewGrade.setVisibility(View.INVISIBLE);
-                        }
-                    }
-
-                    gradeItem.setRead(true);
-                    gradeItem.setIsNew(false);
-                    gradeItem.update();
-                    alertNewGrade.setVisibility(View.INVISIBLE);
-                }
-            });
-
-        }
-    }
-}

app/src/main/java/io/github/wulkanowy/ui/main/grades/GradesContract.java

@@ -0,0 +1,40 @@
+package io.github.wulkanowy.ui.main.grades;
+
+import android.support.v4.widget.SwipeRefreshLayout;
+
+import java.util.List;
+
+import io.github.wulkanowy.di.annotations.PerActivity;
+import io.github.wulkanowy.ui.base.BaseContract;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
+
+public interface GradesContract {
+
+    interface View extends BaseContract.View, SwipeRefreshLayout.OnRefreshListener {
+
+        void updateAdapterList(List<GradeHeaderItem> headerItems);
+
+        void showNoItem(boolean show);
+
+        void onRefreshSuccessNoGrade();
+
+        void onRefreshSuccess(int number);
+
+        void hideRefreshingBar();
+
+        void setActivityTitle();
+
+        boolean isMenuVisible();
+
+    }
+
+    @PerActivity
+    interface Presenter extends BaseContract.Presenter<View> {
+
+        void onFragmentVisible(boolean isVisible);
+
+        void onRefresh();
+
+        void onStart(View view, OnFragmentIsReadyListener listener);
+    }
+}

app/src/main/java/io/github/wulkanowy/ui/main/grades/GradesDialogFragment.java

@@ -1,107 +1,116 @@
 package io.github.wulkanowy.ui.main.grades;
 
 
-import android.app.Dialog;
-import android.app.DialogFragment;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v4.app.DialogFragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Button;
 import android.widget.TextView;
 
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import butterknife.OnClick;
 import io.github.wulkanowy.R;
-import io.github.wulkanowy.db.dao.entities.Grade;
+import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.utils.CommonUtils;
 
 public class GradesDialogFragment extends DialogFragment {
 
+    private static final String ARGUMENT_KEY = "Item";
+
     private Grade grade;
 
+    @BindView(R.id.grade_dialog_value)
+    TextView value;
+
+    @BindView(R.id.grade_dialog_subject)
+    TextView subject;
+
+    @BindView(R.id.grade_dialog_description_value)
+    TextView description;
+
+    @BindView(R.id.grade_dialog_weight_value)
+    TextView weight;
+
+    @BindView(R.id.grade_dialog_teacher_value)
+    TextView teacher;
+
+    @BindView(R.id.grade_dialog_color_value)
+    TextView color;
+
+    @BindView(R.id.grade_dialog_date_value)
+    TextView date;
+
     public GradesDialogFragment() {
-        setRetainInstance(true);
+        //empty constructor for fragment
     }
 
-    public static final GradesDialogFragment newInstance(Grade grade) {
+    public static GradesDialogFragment newInstance(Grade item) {
-        return new GradesDialogFragment().setGrade(grade);
+        GradesDialogFragment dialogFragment = new GradesDialogFragment();
+
+        Bundle bundle = new Bundle();
+        bundle.putSerializable(ARGUMENT_KEY, item);
+
+        dialogFragment.setArguments(bundle);
+
+        return dialogFragment;
     }
 
-    public static int colorHexToColorName(String hexColor) {
+    @Override
-        switch (hexColor) {
+    public void onCreate(@Nullable Bundle savedInstanceState) {
-            case "000000":
+        super.onCreate(savedInstanceState);
-                return R.string.color_black_text;
+        if (getArguments() != null) {
-
+            grade = (Grade) getArguments().getSerializable(ARGUMENT_KEY);
-            case "F04C4C":
-                return R.string.color_red_text;
-
-            case "20A4F7":
-                return R.string.color_blue_text;
-
-            case "6ECD07":
-                return R.string.color_green_text;
-
-            default:
-                return R.string.noColor_text;
         }
     }
 
-    private GradesDialogFragment setGrade(Grade grade) {
-        this.grade = grade;
-        return this;
-    }
-
     @Nullable
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.grades_dialog, container, false);
+        View view = inflater.inflate(R.layout.grade_dialog, container, false);
 
-        TextView gradeText = view.findViewById(R.id.dialog_grade_text);
+        ButterKnife.bind(this, view);
-        TextView subjectText = view.findViewById(R.id.subject_dialog_text_value);
-        TextView descriptionText = view.findViewById(R.id.description_dialog_text_value);
-        TextView weightText = view.findViewById(R.id.weight_dialog_text_value);
-        TextView teacherText = view.findViewById(R.id.teacher_dialog_text_value);
-        TextView dateText = view.findViewById(R.id.date_dialog_text_value);
-        TextView colorText = view.findViewById(R.id.color_dialog_text_value);
-        Button closeDialog = view.findViewById(R.id.close_dialog);
 
-        subjectText.setText(grade.getSubject());
+        subject.setText(grade.getSubject());
-        gradeText.setText(grade.getValue());
+        value.setText(grade.getValue());
-        gradeText.setBackgroundResource(grade.getValueColor());
+        value.setBackgroundResource(grade.getValueColor());
-        weightText.setText(grade.getWeight());
+        weight.setText(grade.getWeight());
-        dateText.setText(grade.getDate());
+        date.setText(grade.getDate());
-        colorText.setText(colorHexToColorName(grade.getColor()));
+        color.setText(CommonUtils.colorHexToColorName(grade.getColor()));
+        teacher.setText(getTeacherString());
+        description.setText(getDescriptionString());
 
-        if ("".equals(grade.getDescription())) {
-            if (!"".equals(grade.getSymbol())) {
-                descriptionText.setText(grade.getSymbol());
-            }
-        } else if (!"".equals(grade.getSymbol())) {
-            descriptionText.setText(String.format("%1$s - %2$s", grade.getSymbol(), grade.getDescription()));
-        } else {
-            descriptionText.setText(grade.getDescription());
-        }
-
-        if (!"".equals(grade.getTeacher())) {
-            teacherText.setText(grade.getTeacher());
-        }
-
-        closeDialog.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                dismiss();
-            }
-        });
 
         return view;
     }
 
-    @Override
+    @OnClick(R.id.grade_dialog_close_button)
-    public void onDestroyView() {
+    void onClickClose() {
-        Dialog dialog = getDialog();
+        dismiss();
-        if (dialog != null && getRetainInstance()) {
+    }
-            dialog.setDismissMessage(null);
+
+    private String getDescriptionString() {
+        if ("".equals(grade.getDescription())) {
+            if (!"".equals(grade.getSymbol())) {
+                return grade.getSymbol();
+            } else {
+                return getString(R.string.noDescription_text);
+            }
+        } else if (!"".equals(grade.getSymbol())) {
+            return String.format("%1$s - %2$s", grade.getSymbol(), grade.getDescription());
+        } else {
+            return grade.getDescription();
+        }
+    }
+
+    private String getTeacherString() {
+        if (grade.getTeacher() != null && !"".equals(grade.getTeacher())) {
+            return grade.getTeacher();
+        } else {
+            return getString(R.string.generic_app_no_data);
         }
-        super.onDestroyView();
     }
 }

app/src/main/java/io/github/wulkanowy/ui/main/grades/GradesFragment.java

@@ -1,211 +1,133 @@
 package io.github.wulkanowy.ui.main.grades;
 
-import android.app.Activity;
-import android.content.Context;
-import android.os.AsyncTask;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
 import android.support.design.widget.Snackbar;
-import android.support.v4.app.Fragment;
 import android.support.v4.widget.SwipeRefreshLayout;
-import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
-import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Toast;
 
-import java.lang.ref.WeakReference;
-import java.util.ArrayList;
 import java.util.List;
 
+import javax.inject.Inject;
+
+import butterknife.BindView;
+import butterknife.ButterKnife;
+import eu.davidea.flexibleadapter.FlexibleAdapter;
+import eu.davidea.flexibleadapter.common.SmoothScrollLinearLayoutManager;
 import io.github.wulkanowy.R;
-import io.github.wulkanowy.WulkanowyApp;
+import io.github.wulkanowy.di.component.FragmentComponent;
-import io.github.wulkanowy.api.Vulcan;
+import io.github.wulkanowy.ui.base.BaseFragment;
-import io.github.wulkanowy.api.login.VulcanOfflineException;
+import io.github.wulkanowy.ui.main.OnFragmentIsReadyListener;
-import io.github.wulkanowy.db.dao.DatabaseAccess;
-import io.github.wulkanowy.db.dao.entities.Account;
-import io.github.wulkanowy.db.dao.entities.AccountDao;
-import io.github.wulkanowy.db.dao.entities.DaoSession;
-import io.github.wulkanowy.db.dao.entities.Grade;
-import io.github.wulkanowy.db.dao.entities.Subject;
-import io.github.wulkanowy.services.jobs.VulcanJobHelper;
-import io.github.wulkanowy.services.sync.LoginSession;
-import io.github.wulkanowy.services.sync.VulcanSync;
-import io.github.wulkanowy.utils.NetworkUtils;
 
-public class GradesFragment extends Fragment {
+public class GradesFragment extends BaseFragment implements GradesContract.View {
 
-    private static List<SubjectWithGrades> subjectWithGradesList = new ArrayList<>();
+    @BindView(R.id.grade_fragment_recycler)
+    RecyclerView recyclerView;
 
-    private static long userId;
+    @BindView(R.id.grade_fragment_no_item_container)
+    View noItemView;
+
+    @BindView(R.id.grade_fragment_swipe_refresh)
+    SwipeRefreshLayout refreshLayout;
+
+    @Inject
+    FlexibleAdapter<GradeHeaderItem> adapter;
+
+    @Inject
+    GradesContract.Presenter presenter;
 
     public GradesFragment() {
-        //empty constructor for fragments
+        // empty constructor for fragment
-    }
-
-    private static void createExpList(View mainView, Activity activity) {
-
-        RecyclerView recyclerView = mainView.findViewById(R.id.subject_grade_recycler);
-        recyclerView.setLayoutManager(new LinearLayoutManager(activity));
-        GradesAdapter gradesAdapter = new GradesAdapter(subjectWithGradesList, activity);
-        recyclerView.setAdapter(gradesAdapter);
-    }
-
-    private static void downloadGradesFormDatabase(DaoSession daoSession) {
-
-        subjectWithGradesList = new ArrayList<>();
-
-        AccountDao accountDao = daoSession.getAccountDao();
-        Account account = accountDao.load(userId);
-
-        for (Subject subject : account.getSubjectList()) {
-            List<Grade> gradeList = subject.getGradeList();
-            if (!gradeList.isEmpty()) {
-                SubjectWithGrades subjectWithGrades = new SubjectWithGrades(subject.getName(), gradeList);
-                subjectWithGradesList.add(subjectWithGrades);
-            }
-        }
     }
 
+    @Nullable
     @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-                             Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.fragment_grades, container, false);
-        view.findViewById(R.id.fragment_no_grades).setVisibility(View.GONE);
 
-        if (getActivity() != null) {
+        FragmentComponent component = getFragmentComponent();
-            DaoSession daoSession = ((WulkanowyApp) getActivity().getApplication()).getDaoSession();
+        if (component != null) {
-            userId = getActivity().getSharedPreferences("LoginData", Context.MODE_PRIVATE)
+            component.inject(this);
-                    .getLong("userId", 0);
+            setButterKnife(ButterKnife.bind(this, view));
-
+            presenter.onStart(this, (OnFragmentIsReadyListener) getActivity());
-            prepareRefreshLayout(view, daoSession);
-
-            if (subjectWithGradesList.equals(new ArrayList<>())) {
-                createExpList(view, getActivity());
-                new GenerateListTask(getActivity(), view, daoSession).execute();
-            } else {
-                createExpList(view, getActivity());
-                view.findViewById(R.id.loadingPanel).setVisibility(View.INVISIBLE);
-            }
         }
+
         return view;
     }
 
-    private void prepareRefreshLayout(final View mainView, final DaoSession daoSession) {
-
-        final SwipeRefreshLayout swipeRefreshLayout = mainView.findViewById(R.id.grade_swipe_refresh);
-
-        swipeRefreshLayout.setColorSchemeResources(android.R.color.black,
-                android.R.color.holo_blue_bright,
-                android.R.color.holo_green_light,
-                android.R.color.holo_orange_light,
-                android.R.color.holo_red_light);
-
-        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
     @Override
-            public void onRefresh() {
+    protected void setUpOnViewCreated(View fragmentView) {
-                if (NetworkUtils.isOnline(getContext())) {
+        noItemView.setVisibility(View.GONE);
-                    new RefreshTask(getActivity(), mainView, daoSession).execute();
+
-                } else {
+        adapter.setAutoCollapseOnExpand(true);
-                    Toast.makeText(mainView.getContext(), R.string.noInternet_text, Toast.LENGTH_SHORT).show();
+        adapter.setAutoScrollOnExpand(true);
-                    swipeRefreshLayout.setRefreshing(false);
+        adapter.expandItemsAtStartUp();
-                }
+
-            }
+        recyclerView.setLayoutManager(new SmoothScrollLinearLayoutManager(fragmentView.getContext()));
-        });
+        recyclerView.setAdapter(adapter);
+
+        refreshLayout.setColorSchemeResources(android.R.color.black);
+        refreshLayout.setOnRefreshListener(this);
     }
 
-    private static class GenerateListTask extends AsyncTask<Void, Void, Void> {
+    @Override
+    public void setMenuVisibility(boolean menuVisible) {
+        super.setMenuVisibility(menuVisible);
+        if (presenter != null) {
+            presenter.onFragmentVisible(menuVisible);
+        }
+    }
 
-        private WeakReference<View> mainView;
+    @Override
-
+    public void setActivityTitle() {
-        private WeakReference<Activity> activity;
+        setTitle(getString(R.string.grades_text));
-
-        private DaoSession daoSession;
-
-        public GenerateListTask(Activity activity, View mainView, DaoSession daoSession) {
-            this.activity = new WeakReference<>(activity);
-            this.mainView = new WeakReference<>(mainView);
-            this.daoSession = daoSession;
     }
 
     @Override
-        protected Void doInBackground(Void... params) {
+    public void onRefresh() {
-            downloadGradesFormDatabase(daoSession);
+        presenter.onRefresh();
-            return null;
     }
 
     @Override
-        protected void onPostExecute(Void result) {
+    public void showNoItem(boolean show) {
-            super.onPostExecute(result);
+        noItemView.setVisibility(show ? View.VISIBLE : View.INVISIBLE);
-            createExpList(mainView.get(), activity.get());
-            mainView.get().findViewById(R.id.loadingPanel).setVisibility(View.INVISIBLE);
-            if (subjectWithGradesList.isEmpty()) {
-                mainView.get().findViewById(R.id.fragment_no_grades).setVisibility(View.VISIBLE);
-            }
-        }
-    }
-
-    private static class RefreshTask extends AsyncTask<Void, Void, Integer> {
-
-        private DaoSession daoSession;
-
-        private WeakReference<Activity> activity;
-
-        private WeakReference<View> mainView;
-
-        public RefreshTask(Activity activity, View mainView, DaoSession daoSession) {
-            this.activity = new WeakReference<>(activity);
-            this.daoSession = daoSession;
-            this.mainView = new WeakReference<>(mainView);
     }
 
     @Override
-        protected Integer doInBackground(Void... params) {
+    public void hideRefreshingBar() {
-            VulcanSync vulcanSync = new VulcanSync(new LoginSession());
+        refreshLayout.setRefreshing(false);
-            try {
+    }
-                vulcanSync.loginCurrentUser(activity.get(), daoSession, new Vulcan());
+
-                vulcanSync.syncGrades();
+    @Override
-                downloadGradesFormDatabase(daoSession);
+    public void updateAdapterList(List<GradeHeaderItem> headerItems) {
-                return 1;
+        adapter.updateDataSet(headerItems);
-            } catch (VulcanOfflineException e) {
+    }
-                Log.e(VulcanJobHelper.DEBUG_TAG, "There was a sync problem, because vulcan is offline", e);
+
-                return R.string.error_host_offline;
+    @Override
-            } catch (Exception e) {
+    public void onRefreshSuccessNoGrade() {
-                Log.e(VulcanJobHelper.DEBUG_TAG, "There was a sync problem", e);
+        onError(R.string.snackbar_no_grades);
-                return R.string.refresh_error_text;
+    }
+
+    @Override
+    public void onRefreshSuccess(int number) {
+        onError(getString(R.string.snackbar_new_grade, number));
+    }
+
+    @Override
+    public void onError(String message) {
+        if (getActivity() != null) {
+            Snackbar.make(getActivity().findViewById(R.id.main_activity_view_pager),
+                    message, Snackbar.LENGTH_LONG).show();
         }
     }
 
     @Override
-        protected void onPostExecute(Integer messageID) {
+    public void onDestroyView() {
-            super.onPostExecute(messageID);
+        presenter.onDestroy();
-
+        super.onDestroyView();
-            if (1 == messageID) {
-                if (mainView.get() != null && activity.get() != null) {
-                    createExpList(mainView.get(), activity.get());
-                }
-
-                int volumeGrades = new DatabaseAccess().getNewGrades(daoSession).size();
-
-                if (volumeGrades == 0) {
-                    Snackbar.make(activity.get().findViewById(R.id.fragment_container),
-                            R.string.snackbar_no_grades,
-                            Snackbar.LENGTH_SHORT).show();
-                } else {
-                    Snackbar.make(activity.get().findViewById(R.id.fragment_container),
-                            activity.get().getString(R.string.snackbar_new_grade, volumeGrades),
-                            Snackbar.LENGTH_SHORT).show();
-                }
-            } else {
-                Toast.makeText(activity.get(), messageID, Toast.LENGTH_SHORT).show();
-            }
-
-            if (mainView.get() != null) {
-                SwipeRefreshLayout swipeRefreshLayout = mainView.get().findViewById(R.id.grade_swipe_refresh);
-                swipeRefreshLayout.setRefreshing(false);
-            }
-        }
     }
 }