Merge branch 'release/0.14.2'

Version 0.14.2
Change color attr in backtround_header_note drawable to color re… (#644 )
2020-01-11 20:10:34 +01:00 · 2020-01-11 20:10:23 +01:00 · 2020-01-11 20:09:33 +01:00 · 2020-01-11 17:25:13 +01:00 · 2020-01-09 00:53:55 +01:00 · 2020-01-09 00:53:51 +01:00
521 changed files with 17610 additions and 3696 deletions
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@ -98,7 +98,7 @@ jobs:
          command: yes | sdkmanager --licenses && yes | sdkmanager --update
      - run:
          name: Setup emulator
-          command: sdkmanager "system-images;android-19;default;armeabi-v7a" && echo "no" | avdmanager create avd -n test -k "system-images;android-19;default;armeabi-v7a"
+          command: sdkmanager "system-images;android-22;default;armeabi-v7a" && echo "no" | avdmanager create avd -n test -k "system-images;android-22;default;armeabi-v7a"
      - run:
          name: Launch emulator
          command: export LD_LIBRARY_PATH=${ANDROID_HOME}/emulator/lib64:${ANDROID_HOME}/emulator/lib64/qt/lib && emulator64-arm -avd test -noaudio -no-boot-anim -no-window -accel on
@ -116,7 +116,7 @@ jobs:
            adb shell input keyevent 82
      - run:
          name: Run instrumented tests
-          command: ./gradlew clean createPlayDebugCoverageReport jacocoTestReport --no-daemon --stacktrace --console=plain -PdisablePreDex
+          command: ./gradlew clean createFdroidDebugCoverageReport jacocoTestReport --no-daemon --stacktrace --console=plain -PdisablePreDex
      - run:
          name: Collect logs from emulator
          command: adb logcat -d > ./app/build/reports/logcat_emulator.txt
--- a/.gitignore
+++ b/.gitignore
@ -1,39 +1,90 @@
-/captures
-.externalNativeBuild
-
-## https://gist.github.com/iainconnor/8605514
+# Created by https://www.gitignore.io

 # Built application files
-/build
-/*/build/
+*.apk
+*.ap_
+*.aab

-# Crashlytics configuations
-com_crashlytics_export_strings.xml
+# Files for the ART/Dalvik VM
+*.dex
+
+# Java class files
+*.class
+
+# Generated files
+bin/
+gen/
+out/
+
+# Gradle files
+.gradle/
+build/

 # Local configuration file (sdk path, etc)
 local.properties

-# Gradle generated files
-.gradle/
+# Proguard folder generated by Eclipse
+proguard/

-# Signing files
-.signing/
+# Log Files
+*.log

-# User-specific configurations
-.idea/copyright/profiles_settings.xml
+# Android Studio Navigation editor temp files
+.navigation/
+
+# Android Studio captures folder
+captures/
+
+# IntelliJ configurations
+*.iml
+.idea/workspace.xml
+.idea/tasks.xml
+.idea/gradle.xml
+.idea/assetWizardSettings.xml
+.idea/dictionaries
+.idea/libraries
+.idea/caches
+.idea/modules.xml
+.idea/navEditor.xml
+.idea/caches/
 .idea/libraries/
-.idea/inspectionProfiles/
+.idea/shelf/
 .idea/.name
 .idea/compiler.xml
+.idea/copyright/profiles_settings.xml
 .idea/encodings.xml
 .idea/misc.xml
-.idea/modules.xml
 .idea/scopes/scope_settings.xml
-.idea/tasks.xml
 .idea/vcs.xml
-.idea/workspace.xml
-.idea/caches/
-*.iml
+.idea/jsLibraryMappings.xml
+.idea/datasources.xml
+.idea/dataSources.ids
+.idea/sqlDataSources.xml
+.idea/dynamic.xml
+.idea/uiDesigner.xml
+.idea/runConfigurations.xml
+
+# Keystore files
+*.jks
+*.keystore
+*.p12
+
+# External native build folder generated in Android Studio 2.2 and later
+.externalNativeBuild
+
+# Version control
+vcs.xml
+
+# lint
+lint/intermediates/
+lint/generated/
+lint/outputs/
+lint/tmp/
+lint/reports/
+
+### Android Patch ###
+gen-external-apklibs
+output.json

 # OS-specific files
 .DS_Store
@ -43,9 +94,21 @@ local.properties
 .Trashes
 ehthumbs.db
 Thumbs.db
-.idea/caches/
-app/key.p12
-app/upload-key.jks
-*.log
-.idea/assetWizardSettings.xml
-.idea/uiDesigner.xml
+
+# Legacy Eclipse project files
+.classpath
+.project
+.cproject
+.settings/
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.war
+*.ear
+
+### AndroidStudio Patch ###
+
+!/gradle/wrapper/gradle-wrapper.jar
+.idea/jarRepositories.xml
--- a/.idea/codeStyles/Project.xml
+++ b/.idea/codeStyles/Project.xml
@ -2,7 +2,7 @@
  <code_scheme name="Project" version="173">
    <option name="LINE_SEPARATOR" value="&#10;" />
    <AndroidXmlCodeStyleSettings>
-      <option name="USE_CUSTOM_SETTINGS" value="true" />
+      <option name="ARRANGEMENT_SETTINGS_MIGRATED_TO_191" value="true" />
    </AndroidXmlCodeStyleSettings>
    <JetCodeStyleSettings>
      <option name="PACKAGES_TO_USE_STAR_IMPORTS">
@ -21,13 +21,10 @@
      <option name="CONTINUATION_INDENT_IN_ELVIS" value="false" />
      <option name="WRAP_ELVIS_EXPRESSIONS" value="0" />
    </JetCodeStyleSettings>
-    <XML>
-      <option name="XML_KEEP_LINE_BREAKS" value="false" />
-      <option name="XML_ALIGN_ATTRIBUTES" value="false" />
-      <option name="XML_SPACE_INSIDE_EMPTY_TAG" value="true" />
-    </XML>
+    <MarkdownNavigatorCodeStyleSettings>
+      <option name="RIGHT_MARGIN" value="72" />
+    </MarkdownNavigatorCodeStyleSettings>
    <codeStyleSettings language="XML">
-      <option name="FORCE_REARRANGE_MODE" value="1" />
      <indentOptions>
        <option name="CONTINUATION_INDENT_SIZE" value="4" />
      </indentOptions>
@ -38,6 +35,7 @@
              <match>
                <AND>
                  <NAME>xmlns:android</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
@ -48,6 +46,7 @@
              <match>
                <AND>
                  <NAME>xmlns:.*</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
@ -59,6 +58,7 @@
              <match>
                <AND>
                  <NAME>.*:id</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
@ -69,6 +69,7 @@
              <match>
                <AND>
                  <NAME>.*:name</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
@ -79,6 +80,7 @@
              <match>
                <AND>
                  <NAME>name</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
@ -89,6 +91,7 @@
              <match>
                <AND>
                  <NAME>style</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
@ -99,6 +102,7 @@
              <match>
                <AND>
                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>^$</XML_NAMESPACE>
                </AND>
              </match>
@ -110,6 +114,7 @@
              <match>
                <AND>
                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>http://schemas.android.com/apk/res/android</XML_NAMESPACE>
                </AND>
              </match>
@ -121,6 +126,7 @@
              <match>
                <AND>
                  <NAME>.*</NAME>
+                  <XML_ATTRIBUTE />
                  <XML_NAMESPACE>.*</XML_NAMESPACE>
                </AND>
              </match>
@ -138,7 +144,6 @@
      <option name="METHOD_PARAMETERS_LPAREN_ON_NEXT_LINE" value="true" />
      <option name="METHOD_PARAMETERS_RPAREN_ON_NEXT_LINE" value="true" />
      <option name="EXTENDS_LIST_WRAP" value="1" />
-      <option name="METHOD_CALL_CHAIN_WRAP" value="1" />
      <indentOptions>
        <option name="CONTINUATION_INDENT_SIZE" value="4" />
      </indentOptions>
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-        <option name="resolveModulePerSourceSet" value="false" />
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>
--- a/.travis.yml
+++ b/.travis.yml
@ -3,17 +3,18 @@ jdk: oraclejdk8

 env:
 global:
-    - ANDROID_API_LEVEL=28
-    - ANDROID_BUILD_TOOLS_VERSION=28.0.3
+    - ANDROID_API_LEVEL=29
+    - ANDROID_BUILD_TOOLS_VERSION=29.0.2

 cache:
  directories:
    - $HOME/.gradle/caches/
    - $HOME/.gradle/wrapper/

-#branches:
-# only:
-#   - develop
+branches:
+  only:
+    - develop
+    - 0.14.2

 android:
 licenses:
@ -33,12 +34,12 @@ android:
    - extra-android-m2repository
    - addon-google_apis-google-$ANDROID_API_LEVEL
    # Android emulator
-    - android-19
-    - sys-img-armeabi-v7a-android-19
+    - android-22
+    - sys-img-armeabi-v7a-android-22

 before_script:
    # Launch emulator before the execution
-    - echo no | android create avd --force -n test -t android-19 --abi armeabi-v7a
+    - echo no | android create avd --force -n test -t android-22 --abi armeabi-v7a
    - emulator -avd test -no-audio -no-window &
    - android-wait-for-emulator
    - adb shell input keyevent 82 &
@ -49,7 +50,7 @@ script:
  - fossa --no-ansi || true
  #- ./gradlew lintPlayRelease -x fabricGenerateResourcesPlayRelease --stacktrace --daemon
  - ./gradlew testPlayDebugUnitTest -x fabricGenerateResourcesPlay --stacktrace --daemon
-  - ./gradlew createPlayDebugCoverageReport --stacktrace --daemon
+  - ./gradlew createFdroidDebugCoverageReport --stacktrace --daemon
  - ./gradlew jacocoTestReport --stacktrace --daemon
  - if [ -z ${SONAR_HOST+x} ]; then echo "sonar scan skipped"; else
      git fetch --unshallow;
--- a/2
+++ b/2
@ -186,7 +186,7 @@
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

-   Copyright 2017 wulkanowy
+   Copyright 2019 Wulkanowy

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
--- a/README.en.md
+++ b/README.en.md
@ -0,0 +1,61 @@
+[Polska wersja README](README.md)
+
+# Wulkanowy
+[![Travis](https://img.shields.io/travis/com/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://travis-ci.com/wulkanowy/wulkanowy)
+[![Codecov](https://img.shields.io/codecov/c/github/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://codecov.io/gh/wulkanowy/wulkanowy)
+[![Discord](https://img.shields.io/discord/390889354199040011.svg?style=flat-square)](https://discord.gg/vccAQBr)
+[![F-Droid](https://img.shields.io/f-droid/v/io.github.wulkanowy.svg?style=flat-square)](https://f-droid.org/packages/io.github.wulkanowy/)
+[![Last release](https://img.shields.io/github/release/wulkanowy/wulkanowy.svg?logo=github&style=flat-square)](https://github.com/wulkanowy/wulkanowy/releases)
+
+Unofficial android VULCAN UONET+ register client for both students and their parents
+
+## Features
+
+* logging in using the email and password OR using token and pin
+* functions from the register website:
+    * grades
+    * grade statistics
+    * attendance
+    * percentage of attendance
+    * exams
+    * timetable
+    * completed lessons
+    * messages
+    * homework
+    * notes
+    * lucky number
+* calculation of the average independently of school's preferences
+* notifications, e.g. about a new grade
+* dark and black (AMOLED) theme
+* offline mode
+* no ads
+
+## Download
+
+You can download the current beta version from the Google Play or the F-Droid store
+
+[<img src="https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png"
+      alt="Get it on Google Play"
+      height="80">](https://play.google.com/store/apps/details?id=io.github.wulkanowy)
+[<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png"
+    alt="Get it on F-Droid"
+    height="80">](https://f-droid.org/packages/io.github.wulkanowy/)
+    
+You can also download a [development version](https://wulkanowy.github.io/#download) that includes new features being prepared for the next release
+
+## Built With
+
+
+* [Wulkanowy SDK](https://github.com/wulkanowy/sdk)
+* [RxJava 2](https://github.com/ReactiveX/RxJava)
+* [Dagger 2](https://github.com/google/dagger)
+* [Room](https://developer.android.com/topic/libraries/architecture/room)
+* [WorkManager](https://developer.android.com/topic/libraries/architecture/workmanager) 
+
+## Contributing
+
+Please contribute to the project either by creating a PR or submitting an issue on GitHub.
+
+## License
+
+This project is licensed under the Apache License 2.0 - see the [LICENSE](LICENSE) file for details
--- a/README.md
+++ b/README.md
@ -1,23 +1,62 @@
+[English version of README](README.en.md)
+
 # Wulkanowy
-
 [![Travis](https://img.shields.io/travis/com/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://travis-ci.com/wulkanowy/wulkanowy)
-[![Bitrise](https://img.shields.io/bitrise/daeff1893f3c8128/master.svg?token=Hjm1ACamk86JDeVVJHOeqQ&style=flat-square)](https://www.bitrise.io/app/daeff1893f3c8128)
 [![Codecov](https://img.shields.io/codecov/c/github/wulkanowy/wulkanowy/master.svg?style=flat-square)](https://codecov.io/gh/wulkanowy/wulkanowy)
-[![BCH compliance](https://bettercodehub.com/edge/badge/wulkanowy/wulkanowy?branch=master)](https://bettercodehub.com/)
-[![Sonarcloud](https://sonarcloud.io/api/project_badges/measure?project=io.github.wulkanowy%3Aapp&metric=sqale_rating)](https://sonarcloud.io/dashboard?id=io.github.wulkanowy%3Aapp)
-[![FOSSA Status](https://app.fossa.com/api/projects/custom%2B5644%2Fgithub.com%2Fwulkanowy%2Fwulkanowy.svg?type=shield)](https://app.fossa.com/projects/custom%2B5644%2Fgithub.com%2Fwulkanowy%2Fwulkanowy?ref=badge_shield)
 [![Discord](https://img.shields.io/discord/390889354199040011.svg?style=flat-square)](https://discord.gg/vccAQBr)
-[![F-Droid](https://img.shields.io/f-droid/v/io.github.wulkanowy.svg)](https://f-droid.org/packages/io.github.wulkanowy/)
-[![Last release](https://img.shields.io/github/release/wulkanowy/wulkanowy.svg?logo=github)](https://github.com/wulkanowy/wulkanowy/releases)
+[![F-Droid](https://img.shields.io/f-droid/v/io.github.wulkanowy.svg?style=flat-square)](https://f-droid.org/packages/io.github.wulkanowy/)
+[![Last release](https://img.shields.io/github/release/wulkanowy/wulkanowy.svg?logo=github&style=flat-square)](https://github.com/wulkanowy/wulkanowy/releases)

-[Pobierz wersję beta z Google Play](https://play.google.com/store/apps/details?id=io.github.wulkanowy&amp;utm_source=vcs)
+Nieoficjalny klient dziennika VULCAN UONET+ dla ucznia i rodzica

-[Pobierz wersję DEV](https://bitrise-redirector.herokuapp.com/v0.1/apps/f841f20d8f8b1dc8/builds/master/artifacts/0)
-[(Więcej wersji DEV)](https://wulkanowy.github.io/dev.html)
+## Funkcje

-Androidowy klient dziennika VULCAN UONET+.
+* logowanie za pomocą e-maila i hasła LUB tokena i pinu
+* funkcje ze strony internetowej dziennika:
+    * oceny
+    * statystyki ocen
+    * frekwencja
+    * procent frekwencji
+    * sprawdziany
+    * plan lekcji
+    * lekcje zrealizowane
+    * wiadomości
+    * zadania domowe
+    * uwagi
+    * szczęśliwy numerek
+* obliczanie średniej niezależnie od preferencji szkoły
+* powiadomienia np. o nowej ocenie
+* ciemny i czarny (AMOLED) motyw
+* tryb offilne
+* brak reklam
+
+## Pobierz
+
+Aktualną wersję beta możesz pobrać ze sklepu Google Play lub F-Droid
+
+[<img src="https://play.google.com/intl/en_us/badges/images/generic/en_badge_web_generic.png"
+      alt="Pobierz z Google Play"
+      height="80">](https://play.google.com/store/apps/details?id=io.github.wulkanowy)
+[<img src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png"
+    alt="Pobierz z F-Droid"
+    height="80">](https://f-droid.org/packages/io.github.wulkanowy/)


-## License
+Możesz także pobrać [wersję rozwojową](https://wulkanowy.github.io/#download), która zawiera nowe funkcje przygotowywane do następnego wydania

-[![FOSSA Status](https://app.fossa.com/api/projects/custom%2B5644%2Fgithub.com%2Fwulkanowy%2Fwulkanowy.svg?type=large)](https://app.fossa.com/projects/custom%2B5644%2Fgithub.com%2Fwulkanowy%2Fwulkanowy?ref=badge_large)
+
+## Zbudowana za pomocą
+
+* [Wulkanowy SDK](https://github.com/wulkanowy/SDK)
+* [RxJava 2](https://github.com/ReactiveX/RxJava)
+* [Dagger 2](https://github.com/google/dagger)
+* [Room](https://developer.android.com/topic/libraries/architecture/room)
+* [WorkManager](https://developer.android.com/topic/libraries/architecture/workmanager) 
+
+## Współpraca
+
+Wnieś swój wkład w projekt, tworząc PR lub wysyłając issue na GitHub.
+
+## Licencja
+
+Ten projekt udostępniany jest na licencji Apache License 2.0 - szczegóły w pliku [LICENSE](LICENSE)
--- a/app/.gitignore
+++ b/app/.gitignore
@ -1 +0,0 @@
-/build
--- a/app/build.gradle
+++ b/app/build.gradle
@ -6,18 +6,19 @@ apply plugin: 'io.fabric'
 apply plugin: 'com.github.triplet.play'
 apply from: 'jacoco.gradle'
 apply from: 'sonarqube.gradle'
+apply from: 'hooks.gradle'

 android {
-    compileSdkVersion 28
-    buildToolsVersion '28.0.3'
+    compileSdkVersion 29
+    buildToolsVersion '29.0.2'

    defaultConfig {
        applicationId "io.github.wulkanowy"
        testApplicationId "io.github.tests.wulkanowy"
-        minSdkVersion 15
-        targetSdkVersion 28
-        versionCode 38
-        versionName "0.9.0"
+        minSdkVersion 16
+        targetSdkVersion 29
+        versionCode 51
+        versionName "0.14.2"
        multiDexEnabled true
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        vectorDrawables.useSupportLibrary = true
@ -27,7 +28,10 @@ android {
        ]
        javaCompileOptions {
            annotationProcessorOptions {
-                arguments = ["room.schemaLocation": "$projectDir/schemas".toString()]
+                arguments = [
+                        "room.schemaLocation": "$projectDir/schemas".toString(),
+                        "room.incremental"   : "true"
+                ]
            }
        }
    }
@ -59,11 +63,11 @@ android {
            versionNameSuffix "-dev"
            testCoverageEnabled = true
            ext.enableCrashlytics = project.hasProperty("enableCrashlytics")
-            multiDexKeepProguard file('proguard-multidex-rules.pro')
        }
    }

    flavorDimensions "platform"
+
    productFlavors {
        play {
            dimension "platform"
@ -83,6 +87,15 @@ android {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+
+    packagingOptions {
+        exclude 'META-INF/library_release.kotlin_module'
+        exclude 'META-INF/library-core_release.kotlin_module'
+    }
 }

 androidExtensions {
@ -96,77 +109,93 @@ play {
    track = 'alpha'
 }

+ext {
+    work_manager = "2.3.0-rc01"
+    room = "2.2.3"
+    dagger = "2.25.4"
+    chucker = "2.0.4"
+    mockk = "1.9.2"
+}
+
+configurations.all {
+    resolutionStrategy.force "androidx.constraintlayout:constraintlayout:1.1.3"
+}
+
 dependencies {
-    implementation 'io.github.wulkanowy:api:0.9.0'
+    implementation "io.github.wulkanowy:sdk:0.14.2"

    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
-    implementation "androidx.legacy:legacy-support-v4:1.0.0"
-    implementation "androidx.appcompat:appcompat:1.0.2"
-    implementation 'androidx.multidex:multidex:2.0.1'
+    implementation "androidx.core:core-ktx:1.2.0-rc01"
+    implementation "androidx.activity:activity-ktx:1.1.0-rc03"
+    implementation "androidx.appcompat:appcompat:1.1.0"
+    implementation "androidx.appcompat:appcompat-resources:1.1.0"
+    implementation "androidx.fragment:fragment-ktx:1.2.0-rc05"
+    implementation "androidx.annotation:annotation:1.1.0"
+    implementation "androidx.multidex:multidex:2.0.1"

-    implementation "androidx.cardview:cardview:1.0.0"
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation "com.google.android.material:material:1.1.0-alpha07"
-    implementation 'com.github.wulkanowy:MaterialChipsInput:b72fd0ee6f'
-    implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'
+    implementation "androidx.preference:preference-ktx:1.1.0"
+    implementation "androidx.recyclerview:recyclerview:1.1.0"
+    implementation "androidx.viewpager:viewpager:1.0.0"
+    implementation "androidx.swiperefreshlayout:swiperefreshlayout:1.1.0-alpha03"
+    implementation "androidx.constraintlayout:constraintlayout:1.1.3"
+    implementation "androidx.coordinatorlayout:coordinatorlayout:1.1.0"
+    implementation "com.google.android.material:material:1.1.0-rc01"
+    implementation "com.github.wulkanowy:material-chips-input:2.0.1"
+    implementation "com.github.PhilJay:MPAndroidChart:v3.1.0"
+    implementation "me.zhanghai.android.materialprogressbar:library:1.6.1"

-    implementation "androidx.work:work-runtime:2.0.1"
-    implementation "androidx.work:work-rxjava2:2.0.1"
+    implementation "androidx.work:work-runtime-ktx:$work_manager"
+    implementation "androidx.work:work-rxjava2:$work_manager"
+    implementation "androidx.work:work-gcm:$work_manager"

-    implementation "androidx.room:room-runtime:2.1.0-rc01"
-    implementation "androidx.room:room-rxjava2:2.1.0-rc01"
-    kapt "androidx.room:room-compiler:2.1.0-rc01"
+    implementation "androidx.room:room-runtime:$room"
+    implementation "androidx.room:room-rxjava2:$room"
+    implementation "androidx.room:room-ktx:$room"
+    kapt "androidx.room:room-compiler:$room"

-    implementation "com.google.dagger:dagger-android-support:2.23.1"
-    kapt "com.google.dagger:dagger-compiler:2.23.1"
-    kapt "com.google.dagger:dagger-android-processor:2.23.1"
-    implementation 'com.squareup.inject:assisted-inject-annotations-dagger2:0.4.0'
-    kapt 'com.squareup.inject:assisted-inject-processor-dagger2:0.4.0'
+    implementation "com.google.dagger:dagger-android-support:$dagger"
+    kapt "com.google.dagger:dagger-compiler:$dagger"
+    kapt "com.google.dagger:dagger-android-processor:$dagger"
+    implementation "com.squareup.inject:assisted-inject-annotations-dagger2:0.5.2"
+    kapt "com.squareup.inject:assisted-inject-processor-dagger2:0.5.2"

    implementation "eu.davidea:flexible-adapter:5.1.0"
    implementation "eu.davidea:flexible-adapter-ui:1.0.0"
    implementation "com.aurelhubert:ahbottomnavigation:2.3.4"
-    implementation 'com.ncapdevi:frag-nav:3.2.0'
+    implementation "com.ncapdevi:frag-nav:3.3.0"
+    implementation "com.github.YarikSOffice:lingver:1.1.0"

-    implementation 'com.github.pwittchen:reactivenetwork-rx2:3.0.3'
-    implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
-    implementation "io.reactivex.rxjava2:rxjava:2.2.9"
+    implementation "com.github.pwittchen:reactivenetwork-rx2:3.0.6"
+    implementation "io.reactivex.rxjava2:rxandroid:2.1.1"
+    implementation "io.reactivex.rxjava2:rxjava:2.2.16"

-    implementation 'com.google.code.gson:gson:2.8.5'
-    implementation "com.jakewharton.threetenabp:threetenabp:1.2.0"
+    implementation "com.google.code.gson:gson:2.8.6"
+    implementation "com.jakewharton.threetenabp:threetenabp:1.2.1"
    implementation "com.jakewharton.timber:timber:4.7.1"
    implementation "at.favre.lib:slf4j-timber:1.0.1"
-    implementation "com.squareup.okhttp3:logging-interceptor:3.12.3"
+    implementation "com.mikepenz:aboutlibraries-core:7.1.0"
+    implementation 'com.wdullaer:materialdatetimepicker:4.2.3'

-    implementation "com.mikepenz:aboutlibraries:6.2.3"
-    implementation 'com.takisoft.preferencex:preferencex:1.0.0'
+    playImplementation "com.google.firebase:firebase-core:17.2.1"
+    playImplementation "com.crashlytics.sdk.android:crashlytics:2.10.1"

-    playImplementation 'com.google.firebase:firebase-core:16.0.9'
-    playImplementation 'com.crashlytics.sdk.android:crashlytics:2.10.1'
+    releaseImplementation "fr.o80.chucker:library-no-op:$chucker"

-    releaseImplementation 'fr.o80.chucker:library-no-op:2.0.4'
-
-    debugImplementation 'fr.o80.chucker:library:2.0.4'
+    debugImplementation "fr.o80.chucker:library:$chucker"
    debugImplementation "com.amitshekhar.android:debug-db:1.0.6"

-    testImplementation "junit:junit:4.12"
-    testImplementation "io.mockk:mockk:1.9.2"
-    testImplementation 'org.threeten:threetenbp:1.4.0'
-    testImplementation "org.mockito:mockito-core:2.28.2"
-    testImplementation("org.mockito:mockito-inline:2.28.2") {
-        exclude group: 'org.mockito', module: 'mockito-core'
-    }
+    testImplementation "junit:junit:4.13"
+    testImplementation "io.mockk:mockk:$mockk"
+    testImplementation "org.threeten:threetenbp:1.4.0"
+    testImplementation "org.mockito:mockito-inline:3.2.4"

-    androidTestImplementation 'androidx.test:core:1.2.0'
-    androidTestImplementation 'androidx.test:runner:1.2.0'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation "io.mockk:mockk-android:1.9.2"
-    androidTestImplementation "androidx.room:room-testing:2.1.0-rc01"
+    androidTestImplementation "androidx.test:core:1.2.0"
+    androidTestImplementation "androidx.test:runner:1.2.0"
+    androidTestImplementation "androidx.test.ext:junit:1.1.1"
+    androidTestImplementation "io.mockk:mockk-android:$mockk"
+    androidTestImplementation "androidx.room:room-testing:$room"
    androidTestImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
-    androidTestImplementation "org.mockito:mockito-core:2.28.2"
-    androidTestImplementation('org.mockito:mockito-android:2.28.2') {
-        exclude group: 'org.mockito', module: 'mockito-core'
-    }
+    androidTestImplementation "org.mockito:mockito-android:3.2.4"
 }

 apply plugin: 'com.google.gms.google-services'
--- a/app/hooks.gradle
+++ b/app/hooks.gradle
@ -0,0 +1,10 @@
+apply plugin: "com.star-zero.gradle.githook"
+
+githook {
+    failOnMissingHooksDir = false
+    hooks {
+        "pre-push" {
+            shell = "./app/play-publish-lint.sh"
+        }
+    }
+}
--- a/app/jacoco.gradle
+++ b/app/jacoco.gradle
@ -1,7 +1,7 @@
 apply plugin: "jacoco"

 jacoco {
-    toolVersion "0.8.3"
+    toolVersion "0.8.4"
    reportsDir = file("$buildDir/reports")
 }

--- a/app/key-encrypted.p12
+++ b/app/key-encrypted.p12
--- a/app/play-publish-lint.sh
+++ b/app/play-publish-lint.sh
@ -0,0 +1,7 @@
+#!/bin/bash -
+
+content=$(cat < "app/src/main/play/release-notes/pl-PL/default.txt") || exit
+if [[ "${#content}" -gt 500 ]]; then
+    echo >&2 "Release notes content has reached the limit of 500 characters"
+    exit 1
+fi
--- a/app/proguard-multidex-rules.pro
+++ b/app/proguard-multidex-rules.pro
@ -1,3 +0,0 @@
-keep class android.support.test.internal** { *; }
-keep class org.junit.** { *; }
-keep public class io.github.wulkanowy** { *; }
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@ -11,6 +11,10 @@
 -verbose


+#Keep all wulkanowy files
+-keep class io.github.wulkanowy.** {*;}
+
+
 #Config for anallitycs
 -keepattributes *Annotation*
 -keepattributes SourceFile,LineNumberTable
@ -32,8 +36,10 @@
 -dontwarn rx.internal.util.**
 -dontwarn sun.misc.Unsafe

+
 #Config for MPAndroidChart
 -keep class com.github.mikephil.charting.** { *; }

-#Config for API
-keep class io.github.wulkanowy.api.** {*;}
+
+#Config for Material Components
+-keep class com.google.android.material.tabs.** { *; }
--- a/app/schemas/io.github.wulkanowy.data.db.AppDatabase/16.json
+++ b/app/schemas/io.github.wulkanowy.data.db.AppDatabase/16.json
--- a/app/schemas/io.github.wulkanowy.data.db.AppDatabase/17.json
+++ b/app/schemas/io.github.wulkanowy.data.db.AppDatabase/17.json
--- a/app/schemas/io.github.wulkanowy.data.db.AppDatabase/18.json
+++ b/app/schemas/io.github.wulkanowy.data.db.AppDatabase/18.json
--- a/app/schemas/io.github.wulkanowy.data.db.AppDatabase/19.json
+++ b/app/schemas/io.github.wulkanowy.data.db.AppDatabase/19.json
--- a/app/src/androidTest/java/io/github/wulkanowy/data/db/migrations/AbstractMigrationTest.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/db/migrations/AbstractMigrationTest.kt
@ -1,11 +1,13 @@
 package io.github.wulkanowy.data.db.migrations

+import androidx.preference.PreferenceManager
 import androidx.room.Room
 import androidx.room.testing.MigrationTestHelper
 import androidx.sqlite.db.framework.FrameworkSQLiteOpenHelperFactory
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.platform.app.InstrumentationRegistry
 import io.github.wulkanowy.data.db.AppDatabase
+import io.github.wulkanowy.data.db.SharedPrefProvider
 import org.junit.Rule

 abstract class AbstractMigrationTest {
@ -22,11 +24,8 @@ abstract class AbstractMigrationTest {
    fun getMigratedRoomDatabase(): AppDatabase {
        val database = Room.databaseBuilder(ApplicationProvider.getApplicationContext(),
            AppDatabase::class.java, dbName)
-            .addMigrations(
-                Migration12(),
-                Migration13(),
-                Migration14(),
-                Migration15()
+            .addMigrations(*AppDatabase.getMigrations(SharedPrefProvider(PreferenceManager
+                .getDefaultSharedPreferences(ApplicationProvider.getApplicationContext())))
            )
            .build()
        // close the database and release any stream resources when the test finishes
--- a/app/src/androidTest/java/io/github/wulkanowy/data/db/migrations/Migration13Test.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/db/migrations/Migration13Test.kt
@ -3,10 +3,14 @@ package io.github.wulkanowy.data.db.migrations
 import android.content.ContentValues
 import android.database.sqlite.SQLiteDatabase
 import androidx.sqlite.db.SupportSQLiteDatabase
+import io.github.wulkanowy.data.db.Converters
+import io.github.wulkanowy.data.db.entities.Semester
 import org.junit.Assert.assertEquals
-import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
 import org.junit.Test
+import org.threeten.bp.LocalDate.now
 import org.threeten.bp.LocalDate.of
+import kotlin.test.assertFalse
 import kotlin.test.assertTrue

 class Migration13Test : AbstractMigrationTest() {
@ -97,11 +101,9 @@ class Migration13Test : AbstractMigrationTest() {
            close()
        }

-        helper.runMigrationsAndValidate(dbName, 13, true, Migration13())
+        val db = helper.runMigrationsAndValidate(dbName, 13, true, Migration13())

-        val db = getMigratedRoomDatabase()
-
-        val semesters1 = db.semesterDao.loadAll(1, 5).blockingGet()
+        val semesters1 = getSemesters(db, "SELECT * FROM Semesters WHERE student_id = 1 AND class_id = 5")
        assertTrue { semesters1.single { it.isCurrent }.isCurrent }
        semesters1[0].run {
            assertFalse(isCurrent)
@ -119,7 +121,7 @@ class Migration13Test : AbstractMigrationTest() {
            assertEquals(2, diaryId)
        }

-        db.semesterDao.loadAll(2, 5).blockingGet().let {
+        getSemesters(db, "SELECT * FROM Semesters WHERE student_id = 2 AND class_id = 5").let {
            assertTrue { it.single { it.isCurrent }.isCurrent }
            assertEquals(1970, it[0].schoolYear)
            assertEquals(of(1970, 1, 1), it[0].end)
@ -130,7 +132,7 @@ class Migration13Test : AbstractMigrationTest() {
            assertTrue(it[3].isCurrent)
        }

-        db.semesterDao.loadAll(2, 5).blockingGet().let {
+        getSemesters(db, "SELECT * FROM Semesters WHERE student_id = 2 AND class_id = 5").let {
            assertTrue { it.single { it.isCurrent }.isCurrent }
            assertFalse(it[0].isCurrent)
            assertFalse(it[1].isCurrent)
@ -139,6 +141,30 @@ class Migration13Test : AbstractMigrationTest() {
        }
    }

+    private fun getSemesters(db: SupportSQLiteDatabase, query: String): List<Semester> {
+        val semesters = mutableListOf<Semester>()
+
+        val cursor = db.query(query)
+        if (cursor.moveToFirst()) {
+            do {
+                semesters.add(Semester(
+                    studentId = cursor.getInt(1),
+                    diaryId = cursor.getInt(2),
+                    diaryName = cursor.getString(3),
+                    semesterId = cursor.getInt(4),
+                    semesterName = cursor.getInt(5),
+                    isCurrent = cursor.getInt(6) == 1,
+                    classId = cursor.getInt(7),
+                    unitId = cursor.getInt(8),
+                    schoolYear = cursor.getInt(9),
+                    start = Converters().timestampToDate(cursor.getLong(10))!!,
+                    end = Converters().timestampToDate(cursor.getLong(11))!!
+                ))
+            } while (cursor.moveToNext())
+        }
+        return semesters.toList()
+    }
+
    private fun createStudent(db: SupportSQLiteDatabase, studentId: Int, schoolName: String = "", classId: Int = -1, schoolId: Int = 123) {
        db.insert("Students", SQLiteDatabase.CONFLICT_FAIL, ContentValues().apply {
            put("endpoint", "https://fakelog.cf")
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/grade/GradeRepositoryTest.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/grade/GradeRepositoryTest.kt
@ -6,15 +6,18 @@ import androidx.test.core.app.ApplicationProvider.getApplicationContext
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.SdkSuppress
 import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
-import io.github.wulkanowy.api.Api
+import io.github.wulkanowy.data.SdkHelper
 import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.repositories.TestInternetObservingStrategy
+import io.github.wulkanowy.sdk.Sdk
 import io.mockk.MockKAnnotations
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
 import io.mockk.impl.annotations.SpyK
+import io.mockk.just
+import io.mockk.runs
 import io.reactivex.Single
 import org.junit.After
 import org.junit.Before
@ -25,14 +28,13 @@ import org.threeten.bp.LocalDateTime
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
 import kotlin.test.assertTrue
-import io.github.wulkanowy.api.grades.Grade as GradeApi

@SdkSuppress(minSdkVersion = P)
@RunWith(AndroidJUnit4::class)
 class GradeRepositoryTest {

-    @SpyK
-    private var mockApi = Api()
+    @MockK
+    private lateinit var mockSdk: Sdk

    private val settings = InternetObservingSettings.builder()
        .strategy(TestInternetObservingStrategy())
@ -55,13 +57,14 @@ class GradeRepositoryTest {
        MockKAnnotations.init(this)
        testDb = Room.inMemoryDatabaseBuilder(getApplicationContext(), AppDatabase::class.java).build()
        gradeLocal = GradeLocal(testDb.gradeDao)
-        gradeRemote = GradeRemote(mockApi)
+        gradeRemote = GradeRemote(mockSdk)

-        every { mockApi.diaryId } returns 1
        every { studentMock.registrationDate } returns LocalDateTime.of(2019, 2, 27, 12, 0)
        every { semesterMock.studentId } returns 1
-        every { semesterMock.semesterId } returns 1
        every { semesterMock.diaryId } returns 1
+        every { semesterMock.schoolYear } returns 2019
+        every { semesterMock.semesterId } returns 1
+        every { mockSdk.switchDiary(any(), any()) } returns mockSdk
    }

    @After
@ -71,7 +74,7 @@ class GradeRepositoryTest {

    @Test
    fun markOlderThanRegisterDateAsRead() {
-        every { mockApi.getGrades(1) } returns Single.just(listOf(
+        every { mockSdk.getGrades(1) } returns Single.just(listOf(
            createGradeApi(5, 4.0, of(2019, 2, 25), "Ocena pojawiła się"),
            createGradeApi(5, 4.0, of(2019, 2, 26), "przed zalogowanie w aplikacji"),
            createGradeApi(5, 4.0, of(2019, 2, 27), "Ocena z dnia logowania"),
@ -95,7 +98,7 @@ class GradeRepositoryTest {
            createGradeLocal(3, 5.0, of(2019, 2, 27), "Trzecia")
        ))

-        every { mockApi.getGrades(1) } returns Single.just(listOf(
+        every { mockSdk.getGrades(1) } returns Single.just(listOf(
            createGradeApi(5, 2.0, of(2019, 2, 25), "Ocena ma datę, jest inna, ale nie zostanie powiadomiona"),
            createGradeApi(4, 3.0, of(2019, 2, 26), "starszą niż ostatnia lokalnie"),
            createGradeApi(3, 4.0, of(2019, 2, 27), "Ta jest z tego samego dnia co ostatnia lokalnie"),
@ -119,7 +122,7 @@ class GradeRepositoryTest {
            createGradeLocal(3, 5.0, of(2019, 2, 26), "Jakaś inna ocena")
        ))

-        every { mockApi.getGrades(1) } returns Single.just(listOf(
+        every { mockSdk.getGrades(1) } returns Single.just(listOf(
            createGradeApi(5, 3.0, of(2019, 2, 25), "Taka sama ocena"),
            createGradeApi(3, 5.0, of(2019, 2, 26), "Jakaś inna ocena")
        ))
@ -137,7 +140,7 @@ class GradeRepositoryTest {
            createGradeLocal(3, 5.0, of(2019, 2, 26), "Jakaś inna ocena")
        ))

-        every { mockApi.getGrades(1) } returns Single.just(listOf(
+        every { mockSdk.getGrades(1) } returns Single.just(listOf(
            createGradeApi(5, 3.0, of(2019, 2, 25), "Taka sama ocena"),
            createGradeApi(5, 3.0, of(2019, 2, 25), "Taka sama ocena"),
            createGradeApi(3, 5.0, of(2019, 2, 26), "Jakaś inna ocena")
@ -153,7 +156,7 @@ class GradeRepositoryTest {
    fun emptyLocal() {
        gradeLocal.saveGrades(listOf())

-        every { mockApi.getGrades(1) } returns Single.just(listOf(
+        every { mockSdk.getGrades(1) } returns Single.just(listOf(
            createGradeApi(5, 3.0, of(2019, 2, 25), "Taka sama ocena"),
            createGradeApi(5, 3.0, of(2019, 2, 25), "Taka sama ocena"),
            createGradeApi(3, 5.0, of(2019, 2, 26), "Jakaś inna ocena")
@ -172,7 +175,7 @@ class GradeRepositoryTest {
            createGradeLocal(3, 5.0, of(2019, 2, 26), "Jakaś inna ocena")
        ))

-        every { mockApi.getGrades(1) } returns Single.just(listOf())
+        every { mockSdk.getGrades(1) } returns Single.just(listOf())

        val grades = GradeRepository(settings, gradeLocal, gradeRemote)
            .getGrades(studentMock, semesterMock, true).blockingGet()
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/grade/TestGradeEntityCreator.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/grade/TestGradeEntityCreator.kt
@ -1,8 +1,7 @@
 package io.github.wulkanowy.data.repositories.grade

-import io.github.wulkanowy.api.toDate
 import org.threeten.bp.LocalDate
-import io.github.wulkanowy.api.grades.Grade as GradeRemote
+import io.github.wulkanowy.sdk.pojo.Grade as GradeRemote
 import io.github.wulkanowy.data.db.entities.Grade as GradeLocal

 fun createGradeLocal(value: Int, weight: Double, date: LocalDate, desc: String, semesterId: Int = 1): GradeLocal {
@ -18,17 +17,25 @@ fun createGradeLocal(value: Int, weight: Double, date: LocalDate, desc: String,
        description = desc,
        entry = "",
        gradeSymbol = "",
-        value = value,
+        value = value.toDouble(),
        weight = "",
        weightValue = weight
    )
 }

 fun createGradeApi(value: Int, weight: Double, date: LocalDate, desc: String): GradeRemote {
-    return GradeRemote().apply {
-        this.value = value
-        this.weightValue = weight
-        this.date = date.toDate()
-        this.description = desc
-    }
+    return GradeRemote(
+        subject = "",
+        color = "",
+        comment = "",
+        date = date,
+        description = desc,
+        entry = "",
+        modifier = .0,
+        symbol = "",
+        teacher = "",
+        value = value.toDouble(),
+        weight = weight.toString(),
+        weightValue = weight
+    )
 }
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsLocalTest.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsLocalTest.kt
@ -4,6 +4,7 @@ import androidx.room.Room
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import io.github.wulkanowy.data.db.AppDatabase
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
 import org.junit.After
@ -24,7 +25,7 @@ class GradeStatisticsLocalTest {
    fun createDb() {
        testDb = Room.inMemoryDatabaseBuilder(ApplicationProvider.getApplicationContext(), AppDatabase::class.java)
            .build()
-        gradeStatisticsLocal = GradeStatisticsLocal(testDb.gradeStatistics)
+        gradeStatisticsLocal = GradeStatisticsLocal(testDb.gradeStatistics, testDb.gradePointsStatistics)
    }

    @After
@ -63,7 +64,52 @@ class GradeStatisticsLocalTest {
        assertEquals(stats[0].subject, "Wszystkie")
    }

+    @Test
+    fun saveAndRead_points() {
+        gradeStatisticsLocal.saveGradesPointsStatistics(listOf(
+            getGradePointsStatistics("Matematyka", 2, 1),
+            getGradePointsStatistics("Chemia", 2, 1),
+            getGradePointsStatistics("Fizyka", 1, 2)
+        ))
+
+        val stats = gradeStatisticsLocal.getGradesPointsStatistics(
+            Semester(2, 2, "", 2019, 1, 2, true, LocalDate.now(), LocalDate.now(), 1, 1),
+            "Matematyka"
+        ).blockingGet()
+        with(stats) {
+            assertEquals(subject, "Matematyka")
+            assertEquals(others, 5.0)
+            assertEquals(student, 5.0)
+        }
+    }
+
+    @Test
+    fun saveAndRead_subjectEmpty() {
+        gradeStatisticsLocal.saveGradesPointsStatistics(listOf())
+
+        val stats = gradeStatisticsLocal.getGradesPointsStatistics(
+            Semester(2, 2, "", 2019, 1, 2, true, LocalDate.now(), LocalDate.now(), 1, 1),
+            "Matematyka"
+        ).blockingGet()
+        assertEquals(null, stats)
+    }
+
+    @Test
+    fun saveAndRead_allEmpty() {
+        gradeStatisticsLocal.saveGradesPointsStatistics(listOf())
+
+        val stats = gradeStatisticsLocal.getGradesPointsStatistics(
+            Semester(2, 2, "", 2019, 1, 2, true, LocalDate.now(), LocalDate.now(), 1, 1),
+            "Wszystkie"
+        ).blockingGet()
+        assertEquals(null, stats)
+    }
+
    private fun getGradeStatistics(subject: String, studentId: Int, semesterId: Int): GradeStatistics {
        return GradeStatistics(studentId, semesterId, subject, 5, 5, false)
    }
+
+    private fun getGradePointsStatistics(subject: String, studentId: Int, semesterId: Int): GradePointsStatistics {
+        return GradePointsStatistics(studentId, semesterId, subject, 5.0, 5.0)
+    }
 }
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/recipient/RecipientLocalTest.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/recipient/RecipientLocalTest.kt
@ -42,7 +42,7 @@ class RecipientLocalTest {
        ))

        val recipients = recipientLocal.getRecipients(
-            Student("fakelog.cf", "AUTO", "", "", "", 1, "", "", "", "", 1, true, LocalDateTime.now()),
+            Student("fakelog.cf", "AUTO", "", "", "", "", false, "", "", "", 1, 0, "", "", "", "", 1, true, LocalDateTime.now()),
            2,
            ReportingUnit(1, 4, "", 0, "", emptyList())
        ).blockingGet()
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/student/StudentLocalTest.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/student/StudentLocalTest.kt
@ -5,7 +5,7 @@ import androidx.room.Room
 import androidx.test.core.app.ApplicationProvider
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import io.github.wulkanowy.data.db.AppDatabase
-import io.github.wulkanowy.data.db.SharedPrefHelper
+import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.db.entities.Student
 import org.junit.After
 import org.junit.Before
@ -21,14 +21,14 @@ class StudentLocalTest {

    private lateinit var testDb: AppDatabase

-    private lateinit var sharedHelper: SharedPrefHelper
+    private lateinit var sharedProvider: SharedPrefProvider

    @Before
    fun createDb() {
        val context = ApplicationProvider.getApplicationContext<Context>()
        testDb = Room.inMemoryDatabaseBuilder(context, AppDatabase::class.java)
            .build()
-        sharedHelper = SharedPrefHelper(context.getSharedPreferences("TEST", Context.MODE_PRIVATE))
+        sharedProvider = SharedPrefProvider(context.getSharedPreferences("TEST", Context.MODE_PRIVATE))
        studentLocal = StudentLocal(testDb.studentDao, context)
    }

@ -39,7 +39,7 @@ class StudentLocalTest {

    @Test
    fun saveAndReadTest() {
-        studentLocal.saveStudents(listOf(Student(email = "test", password = "test123", schoolSymbol = "23", endpoint = "fakelog.cf", loginType = "AUTO", isCurrent = true, studentName = "", schoolName = "", studentId = 0, classId = 1, symbol = "", registrationDate = now(), className = "")))
+        studentLocal.saveStudents(listOf(Student(email = "test", password = "test123", schoolSymbol = "23", scrapperBaseUrl = "fakelog.cf", loginType = "AUTO", isCurrent = true, studentName = "", schoolName = "", studentId = 0, classId = 1, symbol = "", registrationDate = now(), className = "", loginMode = "API", certificateKey = "", privateKey = "", mobileBaseUrl = "", userLoginId = 0, isParent = false)))
            .blockingGet()

        val student = studentLocal.getCurrentStudent(true).blockingGet()
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/timetable/TestTimetableEntityCreator.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/timetable/TestTimetableEntityCreator.kt
@ -1,13 +1,11 @@
 package io.github.wulkanowy.data.repositories.timetable

-import io.github.wulkanowy.api.toDate
-import io.github.wulkanowy.utils.toDate
 import org.threeten.bp.LocalDateTime
 import org.threeten.bp.LocalDateTime.now
-import io.github.wulkanowy.api.timetable.Timetable as TimetableRemote
+import io.github.wulkanowy.sdk.pojo.Timetable as TimetableRemote
 import io.github.wulkanowy.data.db.entities.Timetable as TimetableLocal

-fun createTimetableLocal(number: Int, start: LocalDateTime, room: String = "", subject: String = "", teacher: String = ""): TimetableLocal {
+fun createTimetableLocal(start: LocalDateTime, number: Int, room: String = "", subject: String = "", teacher: String = "", changes: Boolean = false): TimetableLocal {
    return TimetableLocal(
        studentId = 1,
        diaryId = 2,
@ -23,23 +21,27 @@ fun createTimetableLocal(number: Int, start: LocalDateTime, room: String = "", s
        teacher = teacher,
        teacherOld = "",
        info = "",
-        changes = false,
+        changes = changes,
        canceled = false
    )
 }

-fun createTimetableRemote(number: Int, start: LocalDateTime, room: String, subject: String = "", teacher: String = ""): TimetableRemote {
+fun createTimetableRemote(start: LocalDateTime, number: Int = 1, room: String = "", subject: String = "", teacher: String = "", changes: Boolean = false): TimetableRemote {
    return TimetableRemote(
        number = number,
-        start = start.toDate(),
-        end = start.plusMinutes(45).toDate(),
-        date = start.toLocalDate().toDate(),
+        start = start,
+        end = start.plusMinutes(45),
+        date = start.toLocalDate(),
        subject = subject,
        group = "",
        room = room,
        teacher = teacher,
        info = "",
-        changes = false,
-        canceled = false
+        changes = changes,
+        canceled = false,
+        roomOld = "",
+        subjectOld = "",
+        teacherOld = "",
+        studentPlan = true
    )
 }
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/timetable/TimetableLocalTest.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/timetable/TimetableLocalTest.kt
@ -35,9 +35,9 @@ class TimetableLocalTest {
    @Test
    fun saveAndReadTest() {
        timetableDb.saveTimetable(listOf(
-            createTimetableLocal(1, of(2018, 9, 10, 0, 0, 0)),
-            createTimetableLocal(1, of(2018, 9, 14, 0, 0, 0)),
-            createTimetableLocal(1, of(2018, 9, 17, 0, 0, 0))
+            createTimetableLocal(of(2018, 9, 10, 0, 0, 0), 1),
+            createTimetableLocal(of(2018, 9, 14, 0, 0, 0), 1),
+            createTimetableLocal(of(2018, 9, 17, 0, 0, 0), 1)
        ))

        val exams = timetableDb.getTimetable(
--- a/app/src/androidTest/java/io/github/wulkanowy/data/repositories/timetable/TimetableRepositoryTest.kt
+++ b/app/src/androidTest/java/io/github/wulkanowy/data/repositories/timetable/TimetableRepositoryTest.kt
@ -6,14 +6,13 @@ import androidx.test.core.app.ApplicationProvider.getApplicationContext
 import androidx.test.ext.junit.runners.AndroidJUnit4
 import androidx.test.filters.SdkSuppress
 import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.repositories.TestInternetObservingStrategy
+import io.github.wulkanowy.sdk.Sdk
 import io.mockk.MockKAnnotations
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.reactivex.Single
 import org.junit.After
 import org.junit.Before
@ -27,8 +26,8 @@ import kotlin.test.assertEquals
@RunWith(AndroidJUnit4::class)
 class TimetableRepositoryTest {

-    @SpyK
-    private var mockApi = Api()
+    @MockK
+    private lateinit var mockSdk: Sdk

    private val settings = InternetObservingSettings.builder()
        .strategy(TestInternetObservingStrategy())
@ -48,10 +47,13 @@ class TimetableRepositoryTest {
        MockKAnnotations.init(this)
        testDb = Room.inMemoryDatabaseBuilder(getApplicationContext(), AppDatabase::class.java).build()
        timetableLocal = TimetableLocal(testDb.timetableDao)
-        timetableRemote = TimetableRemote(mockApi)
+        timetableRemote = TimetableRemote(mockSdk)

        every { semesterMock.studentId } returns 1
        every { semesterMock.diaryId } returns 2
+        every { semesterMock.schoolYear } returns 2019
+        every { semesterMock.semesterId } returns 1
+        every { mockSdk.switchDiary(any(), any()) } returns mockSdk
    }

    @After
@ -60,19 +62,19 @@ class TimetableRepositoryTest {
    }

    @Test
-    fun copyDetailsToCompletedFromPrevious() {
+    fun copyRoomToCompletedFromPrevious() {
        timetableLocal.saveTimetable(listOf(
-            createTimetableLocal(1, of(2019, 3, 5, 8, 0), "123", "Przyroda"),
-            createTimetableLocal(2, of(2019, 3, 5, 8, 50), "321", "Religia"),
-            createTimetableLocal(3, of(2019, 3, 5, 9, 40), "213", "W-F"),
-            createTimetableLocal(4, of(2019, 3, 5, 10, 30), "213", "W-F", "Jan Kowalski")
+            createTimetableLocal(of(2019, 3, 5, 8, 0), 1, "123", "Przyroda"),
+            createTimetableLocal(of(2019, 3, 5, 8, 50), 2, "321", "Religia"),
+            createTimetableLocal(of(2019, 3, 5, 9, 40), 3, "213", "W-F"),
+            createTimetableLocal(of(2019, 3, 5, 10, 30),3, "213", "W-F", "Jan Kowalski")
        ))

-        every { mockApi.getTimetable(any(), any()) } returns Single.just(listOf(
-            createTimetableRemote(1, of(2019, 3, 5, 8, 0), "", "Przyroda"),
-            createTimetableRemote(2, of(2019, 3, 5, 8, 50), "", "Religia"),
-            createTimetableRemote(3, of(2019, 3, 5, 9, 40), "", "W-F"),
-            createTimetableRemote(4, of(2019, 3, 5, 10, 30), "", "W-F")
+        every { mockSdk.getTimetable(any(), any()) } returns Single.just(listOf(
+            createTimetableRemote(of(2019, 3, 5, 8, 0), 1, "", "Przyroda"),
+            createTimetableRemote(of(2019, 3, 5, 8, 50), 2, "", "Religia"),
+            createTimetableRemote(of(2019, 3, 5, 9, 40), 3, "", "W-F"),
+            createTimetableRemote(of(2019, 3, 5, 10, 30), 4, "", "W-F")
        ))

        val lessons = TimetableRepository(settings, timetableLocal, timetableRemote)
@ -83,7 +85,63 @@ class TimetableRepositoryTest {
        assertEquals("123", lessons[0].room)
        assertEquals("321", lessons[1].room)
        assertEquals("213", lessons[2].room)
+    }

-        assertEquals("", lessons[3].teacher)
+    @Test
+    fun copyTeacherToCompletedFromPrevious() {
+        timetableLocal.saveTimetable(listOf(
+            createTimetableLocal(of(2019, 12, 23, 8, 0), 1, "123", "Matematyka", "Paweł Poniedziałkowski", false),
+            createTimetableLocal(of(2019, 12, 23, 8, 50), 2, "124", "Matematyka", "Paweł Poniedziałkowski", false),
+            createTimetableLocal(of(2019, 12, 23, 9, 40), 3, "125", "Język polski", "Joanna Wtorkowska", true),
+            createTimetableLocal(of(2019, 12, 23, 10, 40), 4, "126", "Język polski", "Joanna Wtorkowska", true),
+
+            createTimetableLocal(of(2019, 12, 24, 8, 0), 1, "123", "Język polski", "Joanna Wtorkowska", false),
+            createTimetableLocal(of(2019, 12, 24, 8, 50), 2, "124", "Język polski", "Joanna Wtorkowska", false),
+            createTimetableLocal(of(2019, 12, 24, 9, 40), 3, "125", "Język polski", "Joanna Środowska", true),
+            createTimetableLocal(of(2019, 12, 24, 10, 40), 4, "126", "Język polski", "Joanna Środowska", true),
+
+            createTimetableLocal(of(2019, 12, 25, 8, 0), 1, "123", "Matematyka", "", false),
+            createTimetableLocal(of(2019, 12, 25, 8, 50), 2, "124", "Matematyka", "", false),
+            createTimetableLocal(of(2019, 12, 25, 9, 40), 3, "125", "Matematyka", "", true),
+            createTimetableLocal(of(2019, 12, 25, 10, 40), 4, "126", "Matematyka", "", true)
+        ))
+
+        every { mockSdk.getTimetable(any(), any()) } returns Single.just(listOf(
+            createTimetableRemote(of(2019, 12, 23, 8, 0), 1, "123", "Matematyka", "Paweł Poniedziałkowski", false),
+            createTimetableRemote(of(2019, 12, 23, 8, 50), 2, "124", "Matematyka", "Jakub Wtorkowski", true),
+            createTimetableRemote(of(2019, 12, 23, 9, 40), 3, "125", "Język polski", "Joanna Poniedziałkowska", false),
+            createTimetableRemote(of(2019, 12, 23, 10, 40), 4, "126", "Język polski", "Joanna Wtorkowska", true),
+
+            createTimetableRemote(of(2019, 12, 24, 8, 0), 1, "123", "Język polski", "", false),
+            createTimetableRemote(of(2019, 12, 24, 8, 50), 2, "124", "Język polski", "", true),
+            createTimetableRemote(of(2019, 12, 24, 9, 40), 3, "125", "Język polski", "", false),
+            createTimetableRemote(of(2019, 12, 24, 10, 40), 4, "126", "Język polski", "", true),
+
+            createTimetableRemote(of(2019, 12, 25, 8, 0), 1, "123", "Matematyka", "Paweł Środowski", false),
+            createTimetableRemote(of(2019, 12, 25, 8, 50), 2, "124", "Matematyka", "Paweł Czwartkowski", true),
+            createTimetableRemote(of(2019, 12, 25, 9, 40), 3, "125", "Matematyka", "Paweł Środowski", false),
+            createTimetableRemote(of(2019, 12, 25, 10, 40), 4, "126", "Matematyka", "Paweł Czwartkowski", true)
+        ))
+
+        val lessons = TimetableRepository(settings, timetableLocal, timetableRemote)
+            .getTimetable(semesterMock, LocalDate.of(2019, 12, 23), LocalDate.of(2019, 12, 25), true)
+            .blockingGet()
+
+        assertEquals(12, lessons.size)
+
+        assertEquals("Paweł Poniedziałkowski", lessons[0].teacher)
+        assertEquals("Jakub Wtorkowski", lessons[1].teacher)
+        assertEquals("Joanna Poniedziałkowska", lessons[2].teacher)
+        assertEquals("Joanna Wtorkowska", lessons[3].teacher)
+
+        assertEquals("Joanna Wtorkowska", lessons[4].teacher)
+        assertEquals("", lessons[5].teacher)
+        assertEquals("", lessons[6].teacher)
+        assertEquals("", lessons[7].teacher)
+
+        assertEquals("Paweł Środowski", lessons[8].teacher)
+        assertEquals("Paweł Czwartkowski", lessons[9].teacher)
+        assertEquals("Paweł Środowski", lessons[10].teacher)
+        assertEquals("Paweł Czwartkowski", lessons[11].teacher)
    }
 }
--- a/app/src/debug/res/drawable/ic_launcher_foreground.xml
+++ b/app/src/debug/res/drawable/ic_launcher_foreground.xml
@ -1,58 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-        android:width="108dp"
-        android:height="108dp"
-        android:viewportWidth="1926.9231"
-        android:viewportHeight="1926.9231">
-    <group android:translateX="462.46155"
-            android:translateY="462.46155">
-      <path
-          android:pathData="M2000,1440.1V2002H1240.1L238.1,1000v0l-120,-120c0.2,-0.2 -0.7,-1.6 -0.6,-1.8 1.6,-3.1 3.4,-6 5,-9.1 0.4,-0.8 0.6,-1.6 0.6,-2.5 9.2,-15.1 20.2,-28.9 31.4,-42.6 0.1,-0.2 0.3,-0.3 0.4,-0.5 5.1,-6.3 10.3,-12.6 15.3,-18.9 1,-1.2 1.9,-2.4 2.9,-3.7 0.2,-0.2 0.3,-0.4 0.5,-0.6 7.6,-9.7 14.8,-19.7 21.2,-30.2 1,-1.7 2,-3.4 2.9,-5.1 0.1,-0.2 0.2,-0.3 0.3,-0.5 6.2,-11.4 11.3,-23.3 17.7,-34.6 4.5,-8 9.3,-15.9 13.8,-23.9 0.1,-0.2 0.2,-0.3 0.3,-0.5 0.8,-1.5 1.6,-3 2.4,-4.4 0.2,-0.3 0.3,-0.6 0.5,-0.9 2,-3.7 3.8,-7.4 5.6,-11.2 6.2,-13.4 10.2,-27.7 14,-41.9 0,-0.2 0.1,-0.3 0.1,-0.5 0.3,-1 0.5,-2 0.8,-2.9 4,-15.3 7.3,-31.4 13.5,-45.9 1.4,-3.3 3,-6.5 4.6,-9.6 0.1,-0.2 0.2,-0.3 0.3,-0.5 5,-9.7 10.6,-19.1 13.5,-29.7 2.6,-9.2 3.5,-19 3.6,-28.8 0,-0.2 0,-0.3 0,-0.5 0.1,-7.2 -0.1,-14.4 -0.4,-21.3 0.9,-5.6 1.9,-11.3 3,-16.9 0.2,-0.9 0.3,-1.7 0.5,-2.6 1.2,-5.9 2.5,-11.7 4.2,-17.4 0,-0.1 0.1,-0.3 0.1,-0.4 0,-0.2 0.1,-0.3 0.1,-0.5 0.2,-2.1 -0.8,-3.7 -2.4,-4.5l7.7,-7.6c1.2,0.9 2.7,1.3 4.3,0.9 12.8,-3.9 24.9,-9.9 36.3,-16.8 2.8,-1.7 5.6,-3.4 8.3,-5.2 0.2,-0.1 0.3,-0.2 0.5,-0.3 7.7,-4.9 15.2,-10.2 22.1,-16 3.1,-2.7 5.9,-5.6 8.3,-8.9 0.1,-0.2 0.2,-0.3 0.4,-0.5 2.3,-3.4 4.2,-7.2 5.3,-11.4 2.4,-9.2 1.9,-19 1.9,-28.4 0,-0.2 0,-0.4 0,-0.6l5.7,-5.6 -0.3,0.1 4.1,1.3 45.3,45 9.6,9.6 14.3,14.3 100.8,100.8 17.2,17.2 16.3,16.3 30.3,-30.3 -192.9,-191.5c0.5,-0.5 1.1,-1.6 1.4,-2.3 0.3,-0.6 0.5,-1.2 0.4,-1.9 0,-0.8 -0.2,-1.6 -0.6,-2.3 -0.1,-0.3 -0.3,-0.7 -0.4,-1 -0.2,-0.4 -0.5,-0.7 -0.9,-1.1l27.8,-27.8 191.1,-191.1c0.7,0.4 1.5,0.6 2.5,0.7 4.1,0 8.2,0.1 11.9,1.9 0.5,0.3 1.3,0.7 2.1,1.1 1.7,2.3 3.5,4.5 5.7,6.2 2.7,2.1 8.2,3 9.4,0.3z"
-          android:fillColor="#AD2A2A"/>
-      <path
-          android:pathData="m616.3,796.7c0.4,1.2 0.5,2.4 0.5,3.7l-5.8,73.3c-0.4,5.2 -5,9.3 -10.6,9.3h-187.2c-4,0 -7.7,-2.3 -9.5,-5.6l-30.9,-57.4c-0.2,-0.3 -0.3,-0.6 -0.4,-0.9l-29.1,-70.5c-1.1,-2.5 -0.9,-5.4 0.3,-7.8l48.3,-94.5c1.2,-2.3 1.4,-5 0.5,-7.4l-23.6,-65.4c-0.8,-2.3 -0.7,-4.9 0.3,-7.1l39.4,-83.9c4,-8.4 17.1,-7.7 19.9,1.1l12.3,38.2 37.5,100.4c1,2.8 3.4,5 6.4,6l80,27.3c3.1,1.1 5.5,3.4 6.5,6.3z"
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-      <path
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-          android:strokeLineJoin="round"
-          android:strokeWidth="4"
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-          android:fillType="nonZero"
-          android:fillAlpha="1"
-          android:strokeLineCap="square"/>
-      <path
-          android:pathData="m728.71,710.91l0,19.89l-88.7,0l0,59.3l77.04,0L717.05,810l-77.04,0l0,65.39l89.84,0l0,19.9L616.56,895.29L616.56,791.16l-52.35,-52.35 -0.77,-0.18c5.41,6.64 9.65,14.32 12.69,23.09 3.72,10.39 5.62,21.92 5.7,34.6L581.84,809.87c-0.08,12.67 -1.98,24.25 -5.7,34.72 -3.63,10.39 -8.95,19.35 -15.97,26.87 -6.93,7.43 -15.46,13.26 -25.6,17.49 -7.54,3.1 -15.86,5.07 -24.97,5.89 -3.04,0.27 -6.16,0.42 -9.37,0.45L457.53,895.29l0,-6.55l-0.37,6.82 53.8,53.45l415.85,0c0.24,0 0.47,-0.02 0.69,-0.05L1132.91,948.97L953.5,769.55l-58.39,-58.39 -0.28,0.06 -58.03,184.06l-20.4,0l-44.66,-141.34zM783.29,711.07 L826.41,857.52 850.08,777.86zM509.6,711.29c1.52,0.15 3.01,0.33 4.49,0.54 -1.47,-0.21 -2.97,-0.39 -4.49,-0.54zM481.35,730.04l0,146.11l18.88,0c9.97,-0.08 18.59,-1.81 25.85,-5.19 7.27,-3.46 13.26,-8.15 17.99,-14.07 4.82,-5.91 8.36,-12.88 10.64,-20.91 2.37,-8.03 3.59,-16.73 3.68,-26.11l0,-13.81c-0.08,-9.38 -1.31,-18.04 -3.68,-25.98 -2.37,-8.03 -5.91,-14.95 -10.64,-20.78 -4.73,-5.91 -10.73,-10.56 -17.99,-13.94 -7.27,-3.38 -15.88,-5.15 -25.85,-5.32zM560.17,734.86c0.65,0.69 1.26,1.4 1.88,2.11 -0.61,-0.72 -1.23,-1.42 -1.88,-2.11z"
-          android:strokeAlpha="1"
-          android:strokeLineJoin="miter"
-          android:strokeWidth="1.94642854"
-          android:fillColor="#000000"
-          android:strokeColor="#00000000"
-          android:fillAlpha="0.18431373"
-          android:strokeLineCap="butt"/>
-      <path
-          android:pathData="m457.53,895.28l0,-184.51l42.7,0q19.26,0.25 34.34,6.59 15.21,6.21 25.6,17.49 10.52,11.15 15.97,26.86 5.58,15.59 5.7,34.59l0,13.56q-0.13,19.01 -5.7,34.72 -5.45,15.59 -15.97,26.86 -10.39,11.15 -25.6,17.49 -15.08,6.21 -34.34,6.34zM481.35,730.04l0,146.11l18.88,0q14.95,-0.13 25.85,-5.2 10.9,-5.2 17.99,-14.07 7.22,-8.87 10.64,-20.91 3.55,-12.04 3.67,-26.1l0,-13.81q-0.13,-14.07 -3.67,-25.98 -3.55,-12.04 -10.64,-20.78 -7.1,-8.87 -17.99,-13.94 -10.9,-5.07 -25.85,-5.32z"
-          android:fillColor="#ffffff"
-          android:strokeColor="#00000000"
-          android:fillAlpha="1"/>
-      <path
-          android:pathData="M717.05,810L640.01,810l0,65.39l89.84,0l0,19.9l-113.29,0l0,-184.51l112.15,0l0,20.02L640.01,730.8l0,59.31l77.05,0z"
-          android:fillColor="#ffffff"
-          android:strokeColor="#00000000"
-          android:fillAlpha="1"/>
-      <path
-          android:pathData="m826.41,857.52 l43.59,-146.74l24.96,0l-58.16,184.51L816.4,895.28l-58.29,-184.51l25.09,0z"
-          android:fillColor="#ffffff"
-          android:strokeColor="#00000000"
-          android:fillAlpha="1"/>
-    </group>
-</vector>
--- a/app/src/debug/res/drawable/ic_launcher_foreground_dev.xml
+++ b/app/src/debug/res/drawable/ic_launcher_foreground_dev.xml
@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="1926"
+    android:viewportHeight="1926">
+    <path
+        android:fillColor="#ad2a2a"
+        android:pathData="M2465,1904v561h-759L704,1463l-120,-120 -1,-1 5,-9 1,-3c9,-15 20,-29 31,-43l16,-19 3,-4 21,-30 3,-6c7,-11 12,-23 18,-35l14,-24 3,-4v-1a234,234 0,0 0,20 -53v-1l1,-3c4,-15 7,-31 13,-46l5,-9v-1c5,-10 11,-19 14, -30 2,-9 3,-19 3,-28v-1,-21l3,-17v-3l4,-17h1v-1c0,-2 -1,-4 -3,-4l8,-8 4,1c13,-4 25,-10 37,-17l8,-5 22,-16 9,-9v-1l5, -11c3,-9 2,-19 2,-29l6,-6 4,2 45,45 10,9 14,14 101,101 17,17 16,17 31,-31 -193,-191 1,-2 1,-2 -1,-3v-1l-1,-1 27,-27 192,-192 2,1a27,27 0,0 1,14 3l6,6c2,2 8,3 9,1l1310,1310z" />
+    <path
+        android:fillColor="#fff"
+        android:pathData="M1082,1260v4l-6,73c0,5 -5,9 -10,9H879c-4,0 -8,-2 -10,-5l-31,-58 -29,-71v-8l48,-94c2,-3 2,-5 1, -8l-24,-65c-1,-2 0,-5 1,-7l39,-84c4,-8 17,-8 20,1l12,38 38,101c1,2 3,5 6,6l80,27c3,1 6,3 7,6l45,135zM852,717c0,-23 15,-43 35,-52l-2,-8c0,-11 13,-20 29,-20h1a38,38 0,0 1,36 -18l3,-2c11,-16 37,-27 68,-27 12,0 23,2 32,4 3,-3 8,-6 14,-6s12,3 14,8c8,-9 22,-16 38,-16 25,0 45,16 45,36l-1,7 3,4c16,6 27,17 27,30 0,14 -15,27 -34,32 -2,0 -3,1 -3,3 0,11 -11,21 -26,22v1c0,22 -41,40 -92,40 -11,0 -21,-1 -31,-3v1c0,9 -12,16 -26,16h-2l2,7c0,14 -18,25 -40,25h-7l-4, 2c-2,7 -8,12 -15,12 -9,0 -16,-7 -16,-16 0,-5 1,-8 4,-11l1,-4c-2,-3 -2,-5 -2,-8 0,-2 -2,-3 -3,-3 -27,-6 -48,-29 -48,-56z" />
+    <path
+        android:fillColor="#fff"
+        android:pathData="M1336,1346h-125c-3,0 -6,-1 -8,-4l-84,-118 -1,-2 -42,-122 -5,-5 -102,-52 -5,-6 -15,-75 -2,-3 -34,-51c-2,-3 -2,-6 -1,-9l21,-45c2,-4 5,-6 9,-6l39,-2c3,0 5,-1 6,-3l29,-22c5,-4 14,-2 17,4l98,201 1,2 13,81 2,5 197,216c6,6 1,16 -8,16zM801,1302c1,3 1,6 -1,8l-19,31c-2,3 -5,5 -9,5H591c-8,0 -13,-8 -9,-15l116,-171 2,-3 53, -228c1,-3 3,-5 5,-6l72,-40c3,-1 5,-4 5,-7l10,-42c2,-9 15,-11 20,-3l3,6c2,2 2,5 1,8l-66,190v5l16,91v5l-40,88v6l22,72z" />
+    <path
+        android:fillColor="#3f3f3f"
+        android:pathData="M886.7,1119.5h1580.5c0.6,0 0,292 0,292H886.7a19.4,19.4 0,0 1,-19.5 -19.5v-253c0,-10.8 8.7,-19.5 19.5,-19.5z"
+        android:strokeWidth="4"
+        android:strokeAlpha=".5"
+        android:strokeColor="#000"
+        android:strokeLineCap="square"
+        android:strokeLineJoin="round" />
+    <path
+        android:fillAlpha=".2"
+        android:fillColor="#000"
+        android:pathData="M1191.2,1173.4v19.9h-88.7v59.3h77v19.9h-77v65.4h89.8v19.9L1079,1357.8v-104.2l-52.3,-52.3 -0.8, -0.2a75.1,75.1 0,0 1,12.7 23,104 104,0 0,1 5.7,34.7v13.5c0,12.7 -2,24.3 -5.7,34.8a72.8,72.8 0,0 1,-41.6 44.4,85.5 85.5,0 0,1 -34.3,6.3L920,1357.8v-6.6l-0.4,6.8 53.8,53.5h622L1416,1232l-58.4,-58.4h-0.3l-58,184.1h -20.4l-44.7,-141.3zM1245.8,1173.5l43,146.5 23.7,-79.7zM972.1,1173.8zM943.8,1192.5v146.1h18.9a62,62 0,0 0,25.8 -5.2,50.3 50.3,0 0,0 18,-14c4.9,-6 8.4,-13 10.7,-21 2.3,-8 3.6,-16.7 3.7,-26v-13.9c-0.1,-9.4 -1.4,-18 -3.7,-26 -2.4,-8 -6,-15 -10.7,-20.7a49.3,49.3 0,0 0,-18 -14,63.4 63.4,0 0,0 -25.8,-5.3zM1022.6,1197.3l2,2.1 -2,-2z"
+        android:strokeWidth="1.9"
+        android:strokeColor="#000" />
+    <path
+        android:fillColor="#fff"
+        android:pathData="M920,1357.7v-184.5h42.7q19.3,0.3 34.3,6.6 15.2,6.2 25.6,17.5 10.6,11.2 16,26.9 5.6,15.6 5.7, 34.6v13.5q-0.1,19 -5.7,34.7 -5.4,15.6 -16,26.9 -10.4,11.2 -25.6,17.5 -15,6.2 -34.3,6.3zM943.8,1192.5v146.1h18.9q15, -0.1 25.8,-5.2 11,-5.2 18,-14 7.3,-9 10.7,-21 3.5,-12 3.6,-26v-13.9q0,-14 -3.6,-26t-10.7,-20.7q-7,-9 -18,-14 -10.9,-5 -25.8,-5.3zM1179.5,1272.5h-77v65.4h89.8v19.9L1079,1357.8v-184.6h112.2v20h-88.7v59.4h77zM1288.9, 1320l43.6,-146.8h25l-58.2,184.6h-20.4l-58.3,-184.6h25z"
+        android:strokeWidth="1"
+        android:strokeColor="#000" />
+</vector>
--- a/app/src/debug/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/app/src/debug/res/mipmap-anydpi-v26/ic_launcher.xml
@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+    <background android:drawable="@color/colorPrimary" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground_dev" />
 </adaptive-icon>
--- a/app/src/debug/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/app/src/debug/res/mipmap-anydpi-v26/ic_launcher_round.xml
@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_background"/>
-    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+    <background android:drawable="@color/colorPrimary" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground_dev" />
 </adaptive-icon>
--- a/app/src/debug/res/values-pl/strings.xml
+++ b/app/src/debug/res/values-pl/strings.xml
@ -1,3 +0,0 @@
-<resources>
-    <string name="app_name">Wulkanowy DEV</string>
-</resources>
--- a/app/src/debug/res/values/ic_launcher_background.xml
+++ b/app/src/debug/res/values/ic_launcher_background.xml
@ -1,4 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <color name="ic_launcher_background">#D32F2F</color>
-</resources>
--- a/app/src/fdroid/java/io/github/wulkanowy/utils/CrashlyticsUtils.kt
+++ b/app/src/fdroid/java/io/github/wulkanowy/utils/CrashlyticsUtils.kt
@ -5,13 +5,13 @@ package io.github.wulkanowy.utils
 import android.content.Context
 import timber.log.Timber

+fun initCrashlytics(context: Context, appInfo: AppInfo) {
+    // do nothing
+}
+
 class CrashlyticsTree : Timber.Tree() {

    override fun log(priority: Int, tag: String?, message: String, t: Throwable?) {
        // do nothing
    }
 }
-
-fun initCrashlytics(context: Context) {
-    // do nothing
-}
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@ -4,8 +4,6 @@
    package="io.github.wulkanowy"
    android:installLocation="internalOnly">

-    <uses-sdk tools:overrideLibrary="com.readystatesoftware.chuck" />
-
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
@ -45,6 +43,7 @@
            android:name=".ui.modules.message.send.SendMessageActivity"
            android:configChanges="orientation|screenSize"
            android:label="@string/send_message_title"
+            android:windowSoftInputMode="adjustResize"
            android:theme="@style/WulkanowyTheme.NoActionBar" />
        <activity
            android:name=".ui.modules.timetablewidget.TimetableWidgetConfigureActivity"
@ -80,7 +79,6 @@
                android:name="android.appwidget.provider"
                android:resource="@xml/provider_widget_timetable" />
        </receiver>
-
        <receiver
            android:name=".ui.modules.luckynumberwidget.LuckyNumberWidgetProvider"
            android:label="@string/lucky_number_title">
--- a/app/src/main/java/io/github/wulkanowy/WulkanowyApp.kt
+++ b/app/src/main/java/io/github/wulkanowy/WulkanowyApp.kt
@ -1,18 +1,21 @@
 package io.github.wulkanowy

 import android.content.Context
+import android.util.Log.INFO
+import android.util.Log.VERBOSE
 import androidx.multidex.MultiDex
 import androidx.work.Configuration
-import androidx.work.WorkManager
 import com.jakewharton.threetenabp.AndroidThreeTen
+import com.yariksoffice.lingver.Lingver
 import dagger.android.AndroidInjector
 import dagger.android.support.DaggerApplication
 import eu.davidea.flexibleadapter.FlexibleAdapter
 import eu.davidea.flexibleadapter.utils.Log
-import io.github.wulkanowy.BuildConfig.DEBUG
 import io.github.wulkanowy.di.DaggerAppComponent
 import io.github.wulkanowy.services.sync.SyncWorkerFactory
+import io.github.wulkanowy.ui.base.ThemeManager
 import io.github.wulkanowy.utils.ActivityLifecycleLogger
+import io.github.wulkanowy.utils.AppInfo
 import io.github.wulkanowy.utils.CrashlyticsTree
 import io.github.wulkanowy.utils.DebugLogTree
 import io.github.wulkanowy.utils.initCrashlytics
@ -22,11 +25,17 @@ import timber.log.Timber
 import java.io.IOException
 import javax.inject.Inject

-class WulkanowyApp : DaggerApplication() {
+class WulkanowyApp : DaggerApplication(), Configuration.Provider {

    @Inject
    lateinit var workerFactory: SyncWorkerFactory

+    @Inject
+    lateinit var themeManager: ThemeManager
+
+    @Inject
+    lateinit var appInfo: AppInfo
+
    override fun attachBaseContext(base: Context?) {
        super.attachBaseContext(base)
        MultiDex.install(this)
@ -35,15 +44,16 @@ class WulkanowyApp : DaggerApplication() {
    override fun onCreate() {
        super.onCreate()
        AndroidThreeTen.init(this)
-        WorkManager.initialize(this, Configuration.Builder().setWorkerFactory(workerFactory).build())
        RxJavaPlugins.setErrorHandler(::onError)
+        Lingver.init(this)
+        themeManager.applyDefaultTheme()

-        initCrashlytics(applicationContext)
        initLogging()
+        initCrashlytics(this, appInfo)
    }

    private fun initLogging() {
-        if (DEBUG) {
+        if (appInfo.isDebug) {
            Timber.plant(DebugLogTree())
            FlexibleAdapter.enableLogs(Log.Level.DEBUG)
        } else {
@ -53,12 +63,19 @@ class WulkanowyApp : DaggerApplication() {
    }

    private fun onError(error: Throwable) {
-        if (error is UndeliverableException && error.cause is IOException || error.cause is InterruptedException) {
-            Timber.e(error.cause, "An undeliverable error occurred")
+        //RxJava's too deep stack traces may cause SOE on older android devices
+        val cause = error.cause
+        if (error is UndeliverableException && cause is IOException || cause is InterruptedException || cause is StackOverflowError) {
+            Timber.e(cause, "An undeliverable error occurred")
        } else throw error
    }

    override fun applicationInjector(): AndroidInjector<out DaggerApplication> {
        return DaggerAppComponent.factory().create(this)
    }
+
+    override fun getWorkManagerConfiguration() = Configuration.Builder()
+        .setWorkerFactory(workerFactory)
+        .setMinimumLoggingLevel(if (appInfo.isDebug) VERBOSE else INFO)
+        .build()
 }
--- a/app/src/main/java/io/github/wulkanowy/data/ApiHelper.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/ApiHelper.kt
@ -1,35 +0,0 @@
-package io.github.wulkanowy.data
-
-import io.github.wulkanowy.api.Api
-import io.github.wulkanowy.data.db.entities.Student
-import java.net.URL
-import javax.inject.Inject
-
-class ApiHelper @Inject constructor(private val api: Api) {
-
-    fun initApi(student: Student) {
-        api.apply {
-            email = student.email
-            password = student.password
-            symbol = student.symbol
-            schoolSymbol = student.schoolSymbol
-            studentId = student.studentId
-            classId = student.classId
-            host = URL(student.endpoint).run { host + ":$port".removeSuffix(":-1") }
-            ssl = student.endpoint.startsWith("https")
-            loginType = Api.LoginType.valueOf(student.loginType)
-            useNewStudent = true
-        }
-    }
-
-    fun initApi(email: String, password: String, symbol: String, endpoint: String) {
-        api.apply {
-            this.email = email
-            this.password = password
-            this.symbol = symbol
-            host = URL(endpoint).run { host + ":$port".removeSuffix(":-1") }
-            ssl = endpoint.startsWith("https")
-            useNewStudent = true
-        }
-    }
-}
--- a/app/src/main/java/io/github/wulkanowy/data/RepositoryModule.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/RepositoryModule.kt
@ -11,12 +11,10 @@ import com.readystatesoftware.chuck.api.ChuckInterceptor
 import com.readystatesoftware.chuck.api.RetentionManager
 import dagger.Module
 import dagger.Provides
-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.AppDatabase
+import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.repositories.preferences.PreferencesRepository
-import okhttp3.logging.HttpLoggingInterceptor
-import okhttp3.logging.HttpLoggingInterceptor.Level.BASIC
-import okhttp3.logging.HttpLoggingInterceptor.Level.NONE
+import io.github.wulkanowy.sdk.Sdk
 import timber.log.Timber
 import javax.inject.Singleton

@ -33,15 +31,14 @@ internal class RepositoryModule {

    @Singleton
    @Provides
-    fun provideApi(chuckCollector: ChuckCollector, context: Context): Api {
-        return Api().apply {
-            logLevel = NONE
+    fun provideSdk(chuckCollector: ChuckCollector, context: Context): Sdk {
+        return Sdk().apply {
            androidVersion = android.os.Build.VERSION.RELEASE
            buildTag = android.os.Build.MODEL
-            setInterceptor(HttpLoggingInterceptor(HttpLoggingInterceptor.Logger { Timber.d(it) }).setLevel(BASIC))
+            setSimpleHttpLogger { Timber.d(it) }

            // for debug only
-            setInterceptor(ChuckInterceptor(context, chuckCollector).maxContentLength(250000L), true, 0)
+            addInterceptor(ChuckInterceptor(context, chuckCollector).maxContentLength(250000L), true)
        }
    }

@ -55,7 +52,7 @@ internal class RepositoryModule {

    @Singleton
    @Provides
-    fun provideDatabase(context: Context) = AppDatabase.newInstance(context)
+    fun provideDatabase(context: Context, sharedPrefProvider: SharedPrefProvider) = AppDatabase.newInstance(context, sharedPrefProvider)

    @Singleton
    @Provides
@ -85,6 +82,10 @@ internal class RepositoryModule {
    @Provides
    fun provideGradeStatisticsDao(database: AppDatabase) = database.gradeStatistics

+    @Singleton
+    @Provides
+    fun provideGradePointsStatisticsDao(database: AppDatabase) = database.gradePointsStatistics
+
    @Singleton
    @Provides
    fun provideMessagesDao(database: AppDatabase) = database.messagesDao
@ -136,4 +137,12 @@ internal class RepositoryModule {
    @Singleton
    @Provides
    fun provideMobileDevicesDao(database: AppDatabase) = database.mobileDeviceDao
+
+    @Singleton
+    @Provides
+    fun provideTeacherDao(database: AppDatabase) = database.teacherDao
+
+    @Singleton
+    @Provides
+    fun provideSchoolInfoDao(database: AppDatabase) = database.schoolDao
 }
--- a/app/src/main/java/io/github/wulkanowy/data/SdkHelper.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/SdkHelper.kt
@ -0,0 +1,30 @@
+package io.github.wulkanowy.data
+
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.sdk.Sdk
+import javax.inject.Inject
+
+class SdkHelper @Inject constructor(private val sdk: Sdk) {
+
+    fun init(student: Student) {
+        sdk.apply {
+            email = student.email
+            password = student.password
+            symbol = student.symbol
+            schoolSymbol = student.schoolSymbol
+            studentId = student.studentId
+            classId = student.classId
+
+            if (Sdk.Mode.valueOf(student.loginMode) != Sdk.Mode.API) {
+                scrapperBaseUrl = student.scrapperBaseUrl
+                loginType = Sdk.ScrapperLoginType.valueOf(student.loginType)
+            }
+            loginId = student.userLoginId
+
+            mode = Sdk.Mode.valueOf(student.loginMode)
+            mobileBaseUrl = student.mobileBaseUrl
+            certKey = student.certificateKey
+            privateKey = student.privateKey
+        }
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/AppDatabase.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/AppDatabase.kt
@ -6,11 +6,13 @@ import androidx.room.Room
 import androidx.room.RoomDatabase
 import androidx.room.RoomDatabase.JournalMode.TRUNCATE
 import androidx.room.TypeConverters
+import androidx.room.migration.Migration
 import io.github.wulkanowy.data.db.dao.AttendanceDao
 import io.github.wulkanowy.data.db.dao.AttendanceSummaryDao
 import io.github.wulkanowy.data.db.dao.CompletedLessonsDao
 import io.github.wulkanowy.data.db.dao.ExamDao
 import io.github.wulkanowy.data.db.dao.GradeDao
+import io.github.wulkanowy.data.db.dao.GradePointsStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeSummaryDao
 import io.github.wulkanowy.data.db.dao.HomeworkDao
@ -20,15 +22,18 @@ import io.github.wulkanowy.data.db.dao.MobileDeviceDao
 import io.github.wulkanowy.data.db.dao.NoteDao
 import io.github.wulkanowy.data.db.dao.RecipientDao
 import io.github.wulkanowy.data.db.dao.ReportingUnitDao
+import io.github.wulkanowy.data.db.dao.SchoolDao
 import io.github.wulkanowy.data.db.dao.SemesterDao
 import io.github.wulkanowy.data.db.dao.StudentDao
 import io.github.wulkanowy.data.db.dao.SubjectDao
+import io.github.wulkanowy.data.db.dao.TeacherDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.data.db.entities.AttendanceSummary
 import io.github.wulkanowy.data.db.entities.CompletedLesson
 import io.github.wulkanowy.data.db.entities.Exam
 import io.github.wulkanowy.data.db.entities.Grade
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.GradeSummary
 import io.github.wulkanowy.data.db.entities.Homework
@ -38,9 +43,11 @@ import io.github.wulkanowy.data.db.entities.MobileDevice
 import io.github.wulkanowy.data.db.entities.Note
 import io.github.wulkanowy.data.db.entities.Recipient
 import io.github.wulkanowy.data.db.entities.ReportingUnit
+import io.github.wulkanowy.data.db.entities.School
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.Subject
+import io.github.wulkanowy.data.db.entities.Teacher
 import io.github.wulkanowy.data.db.entities.Timetable
 import io.github.wulkanowy.data.db.migrations.Migration10
 import io.github.wulkanowy.data.db.migrations.Migration11
@ -48,6 +55,10 @@ import io.github.wulkanowy.data.db.migrations.Migration12
 import io.github.wulkanowy.data.db.migrations.Migration13
 import io.github.wulkanowy.data.db.migrations.Migration14
 import io.github.wulkanowy.data.db.migrations.Migration15
+import io.github.wulkanowy.data.db.migrations.Migration16
+import io.github.wulkanowy.data.db.migrations.Migration17
+import io.github.wulkanowy.data.db.migrations.Migration18
+import io.github.wulkanowy.data.db.migrations.Migration19
 import io.github.wulkanowy.data.db.migrations.Migration2
 import io.github.wulkanowy.data.db.migrations.Migration3
 import io.github.wulkanowy.data.db.migrations.Migration4
@ -70,6 +81,7 @@ import javax.inject.Singleton
        Grade::class,
        GradeSummary::class,
        GradeStatistics::class,
+        GradePointsStatistics::class,
        Message::class,
        Note::class,
        Homework::class,
@ -78,7 +90,9 @@ import javax.inject.Singleton
        CompletedLesson::class,
        ReportingUnit::class,
        Recipient::class,
-        MobileDevice::class
+        MobileDevice::class,
+        Teacher::class,
+        School::class
    ],
    version = AppDatabase.VERSION_SCHEMA,
    exportSchema = true
@ -87,29 +101,37 @@ import javax.inject.Singleton
 abstract class AppDatabase : RoomDatabase() {

    companion object {
-        const val VERSION_SCHEMA = 15
+        const val VERSION_SCHEMA = 19

-        fun newInstance(context: Context): AppDatabase {
+        fun getMigrations(sharedPrefProvider: SharedPrefProvider): Array<Migration> {
+            return arrayOf(
+                Migration2(),
+                Migration3(),
+                Migration4(),
+                Migration5(),
+                Migration6(),
+                Migration7(),
+                Migration8(),
+                Migration9(),
+                Migration10(),
+                Migration11(),
+                Migration12(),
+                Migration13(),
+                Migration14(),
+                Migration15(),
+                Migration16(),
+                Migration17(),
+                Migration18(),
+                Migration19(sharedPrefProvider)
+            )
+        }
+
+        fun newInstance(context: Context, sharedPrefProvider: SharedPrefProvider): AppDatabase {
            return Room.databaseBuilder(context, AppDatabase::class.java, "wulkanowy_database")
                .setJournalMode(TRUNCATE)
                .fallbackToDestructiveMigrationFrom(VERSION_SCHEMA + 1)
                .fallbackToDestructiveMigrationOnDowngrade()
-                .addMigrations(
-                    Migration2(),
-                    Migration3(),
-                    Migration4(),
-                    Migration5(),
-                    Migration6(),
-                    Migration7(),
-                    Migration8(),
-                    Migration9(),
-                    Migration10(),
-                    Migration11(),
-                    Migration12(),
-                    Migration13(),
-                    Migration14(),
-                    Migration15()
-                )
+                .addMigrations(*getMigrations(sharedPrefProvider))
                .build()
        }
    }
@ -132,6 +154,8 @@ abstract class AppDatabase : RoomDatabase() {

    abstract val gradeStatistics: GradeStatisticsDao

+    abstract val gradePointsStatistics: GradePointsStatisticsDao
+
    abstract val messagesDao: MessagesDao

    abstract val noteDao: NoteDao
@ -149,4 +173,8 @@ abstract class AppDatabase : RoomDatabase() {
    abstract val recipientDao: RecipientDao

    abstract val mobileDeviceDao: MobileDeviceDao
+
+    abstract val teacherDao: TeacherDao
+
+    abstract val schoolDao: SchoolDao
 }
--- a/app/src/main/java/io/github/wulkanowy/data/db/SharedPrefHelper.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/SharedPrefHelper.kt
@ -1,23 +0,0 @@
-package io.github.wulkanowy.data.db
-
-import android.annotation.SuppressLint
-import android.content.SharedPreferences
-import javax.inject.Inject
-import javax.inject.Singleton
-
-@Singleton
-@SuppressLint("ApplySharedPref")
-class SharedPrefHelper @Inject constructor(private val sharedPref: SharedPreferences) {
-
-    fun putLong(key: String, value: Long, sync: Boolean = false) {
-        sharedPref.edit().putLong(key, value).apply {
-            if (sync) commit() else apply()
-        }
-    }
-
-    fun getLong(key: String, defaultValue: Long) = sharedPref.getLong(key, defaultValue)
-
-    fun delete(key: String) {
-        sharedPref.edit().remove(key).apply()
-    }
-}
--- a/app/src/main/java/io/github/wulkanowy/data/db/SharedPrefProvider.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/SharedPrefProvider.kt
@ -0,0 +1,30 @@
+package io.github.wulkanowy.data.db
+
+import android.content.SharedPreferences
+import androidx.core.content.edit
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class SharedPrefProvider @Inject constructor(private val sharedPref: SharedPreferences) {
+
+    companion object {
+        const val APP_VERSION_CODE_KEY = "app_version_code"
+    }
+
+    fun putLong(key: String, value: Long, sync: Boolean = false) {
+        sharedPref.edit(sync) { putLong(key, value) }
+    }
+
+    fun getLong(key: String, defaultValue: Long) = sharedPref.getLong(key, defaultValue)
+
+    fun getString(key: String, defaultValue: String): String = sharedPref.getString(key, defaultValue) ?: defaultValue
+
+    fun putString(key: String, value: String, sync: Boolean = false) {
+        sharedPref.edit(sync) { putString(key, value) }
+    }
+
+    fun delete(key: String) {
+        sharedPref.edit().remove(key).apply()
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/AttendanceDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/AttendanceDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.reactivex.Maybe
@ -11,13 +9,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface AttendanceDao {
-
-    @Insert
-    fun insertAll(exams: List<Attendance>): List<Long>
-
-    @Delete
-    fun deleteAll(exams: List<Attendance>)
+interface AttendanceDao : BaseDao<Attendance> {

    @Query("SELECT * FROM Attendance WHERE diary_id = :diaryId AND student_id = :studentId AND date >= :from AND date <= :end")
    fun loadAll(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): Maybe<List<Attendance>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/AttendanceSummaryDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/AttendanceSummaryDao.kt
@ -1,20 +1,12 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.AttendanceSummary
 import io.reactivex.Maybe

@Dao
-interface AttendanceSummaryDao {
-
-    @Insert
-    fun insertAll(exams: List<AttendanceSummary>): List<Long>
-
-    @Delete
-    fun deleteAll(exams: List<AttendanceSummary>)
+interface AttendanceSummaryDao : BaseDao<AttendanceSummary> {

    @Query("SELECT * FROM AttendanceSummary WHERE diary_id = :diaryId AND student_id = :studentId AND subject_id = :subjectId")
    fun loadAll(diaryId: Int, studentId: Int, subjectId: Int): Maybe<List<AttendanceSummary>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/BaseDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/BaseDao.kt
@ -0,0 +1,17 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Delete
+import androidx.room.Insert
+import androidx.room.Update
+
+interface BaseDao<T> {
+
+    @Insert
+    fun insertAll(items: List<T>): List<Long>
+
+    @Update
+    fun updateAll(items: List<T>)
+
+    @Delete
+    fun deleteAll(items: List<T>)
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/CompletedLessonsDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/CompletedLessonsDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.CompletedLesson
 import io.reactivex.Maybe
@ -11,13 +9,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface CompletedLessonsDao {
-
-    @Insert
-    fun insertAll(exams: List<CompletedLesson>)
-
-    @Delete
-    fun deleteAll(exams: List<CompletedLesson>)
+interface CompletedLessonsDao : BaseDao<CompletedLesson> {

    @Query("SELECT * FROM CompletedLesson WHERE diary_id = :diaryId AND student_id = :studentId AND date >= :from AND date <= :end")
    fun loadAll(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): Maybe<List<CompletedLesson>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/ExamDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/ExamDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Exam
 import io.reactivex.Maybe
@ -11,13 +9,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface ExamDao {
-
-    @Insert
-    fun insertAll(exams: List<Exam>): List<Long>
-
-    @Delete
-    fun deleteAll(exams: List<Exam>)
+interface ExamDao : BaseDao<Exam> {

    @Query("SELECT * FROM Exams WHERE diary_id = :diaryId AND student_id = :studentId AND date >= :from AND date <= :end")
    fun loadAll(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): Maybe<List<Exam>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/GradeDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/GradeDao.kt
@ -1,26 +1,14 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
-import androidx.room.Update
 import io.github.wulkanowy.data.db.entities.Grade
 import io.reactivex.Maybe
 import javax.inject.Singleton

@Singleton
@Dao
-interface GradeDao {
-
-    @Insert
-    fun insertAll(grades: List<Grade>)
-
-    @Update
-    fun updateAll(grade: List<Grade>)
-
-    @Delete
-    fun deleteAll(grades: List<Grade>)
+interface GradeDao : BaseDao<Grade> {

    @Query("SELECT * FROM Grades WHERE semester_id = :semesterId AND student_id = :studentId")
    fun loadAll(semesterId: Int, studentId: Int): Maybe<List<Grade>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/GradePointsStatisticsDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/GradePointsStatisticsDao.kt
@ -0,0 +1,18 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
+import io.reactivex.Maybe
+import javax.inject.Singleton
+
+@Singleton
+@Dao
+interface GradePointsStatisticsDao : BaseDao<GradePointsStatistics> {
+
+    @Query("SELECT * FROM GradesPointsStatistics WHERE student_id = :studentId AND semester_id = :semesterId AND subject = :subjectName")
+    fun loadSubject(semesterId: Int, studentId: Int, subjectName: String): Maybe<GradePointsStatistics>
+
+    @Query("SELECT * FROM GradesPointsStatistics WHERE student_id = :studentId AND semester_id = :semesterId")
+    fun loadAll(semesterId: Int, studentId: Int): Maybe<List<GradePointsStatistics>>
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/GradeStatisticsDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/GradeStatisticsDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.reactivex.Maybe
@ -10,13 +8,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface GradeStatisticsDao {
-
-    @Insert
-    fun insertAll(gradesStatistics: List<GradeStatistics>)
-
-    @Delete
-    fun deleteAll(gradesStatistics: List<GradeStatistics>)
+interface GradeStatisticsDao : BaseDao<GradeStatistics> {

    @Query("SELECT * FROM GradesStatistics WHERE student_id = :studentId AND semester_id = :semesterId AND subject = :subjectName AND is_semester = :isSemester")
    fun loadSubject(semesterId: Int, studentId: Int, subjectName: String, isSemester: Boolean): Maybe<List<GradeStatistics>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/GradeSummaryDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/GradeSummaryDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.GradeSummary
 import io.reactivex.Maybe
@ -10,13 +8,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface GradeSummaryDao {
-
-    @Insert
-    fun insertAll(gradesSummary: List<GradeSummary>)
-
-    @Delete
-    fun deleteAll(gradesSummary: List<GradeSummary>)
+interface GradeSummaryDao : BaseDao<GradeSummary> {

    @Query("SELECT * FROM GradesSummary WHERE student_id = :studentId AND semester_id = :semesterId")
    fun loadAll(semesterId: Int, studentId: Int): Maybe<List<GradeSummary>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/HomeworkDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/HomeworkDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Homework
 import io.reactivex.Maybe
@ -11,13 +9,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface HomeworkDao {
-
-    @Insert
-    fun insertAll(homework: List<Homework>)
-
-    @Delete
-    fun deleteAll(homework: List<Homework>)
+interface HomeworkDao : BaseDao<Homework> {

    @Query("SELECT * FROM Homework WHERE semester_id = :semesterId AND student_id = :studentId AND date >= :from AND date <= :end")
    fun loadAll(semesterId: Int, studentId: Int, from: LocalDate, end: LocalDate): Maybe<List<Homework>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/LuckyNumberDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/LuckyNumberDao.kt
@ -1,10 +1,7 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
-import androidx.room.Update
 import io.github.wulkanowy.data.db.entities.LuckyNumber
 import io.reactivex.Maybe
 import org.threeten.bp.LocalDate
@ -12,18 +9,8 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface LuckyNumberDao {
-
-    @Insert
-    fun insert(luckyNumber: LuckyNumber)
-
-    @Update
-    fun update(luckyNumber: LuckyNumber)
-
-    @Delete
-    fun delete(luckyNumber: LuckyNumber)
+interface LuckyNumberDao : BaseDao<LuckyNumber> {

    @Query("SELECT * FROM LuckyNumbers WHERE student_id = :studentId AND date = :date")
    fun load(studentId: Int, date: LocalDate): Maybe<LuckyNumber>
-
 }
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/MessagesDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/MessagesDao.kt
@ -1,24 +1,12 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
-import androidx.room.Update
 import io.github.wulkanowy.data.db.entities.Message
 import io.reactivex.Maybe

@Dao
-interface MessagesDao {
-
-    @Insert
-    fun insertAll(messages: List<Message>)
-
-    @Delete
-    fun deleteAll(messages: List<Message>)
-
-    @Update
-    fun updateAll(messages: List<Message>)
+interface MessagesDao : BaseDao<Message> {

    @Query("SELECT * FROM Messages WHERE student_id = :studentId AND folder_id = :folder AND removed = 0 ORDER BY date DESC")
    fun loadAll(studentId: Int, folder: Int): Maybe<List<Message>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/MobileDeviceDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/MobileDeviceDao.kt
@ -1,20 +1,12 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.MobileDevice
 import io.reactivex.Maybe

@Dao
-interface MobileDeviceDao {
-
-    @Insert
-    fun insertAll(devices: List<MobileDevice>)
-
-    @Delete
-    fun deleteAll(devices: List<MobileDevice>)
+interface MobileDeviceDao : BaseDao<MobileDevice> {

    @Query("SELECT * FROM MobileDevices WHERE student_id = :studentId ORDER BY date DESC")
    fun loadAll(studentId: Int): Maybe<List<MobileDevice>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/NoteDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/NoteDao.kt
@ -1,28 +1,15 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
-import androidx.room.Update
 import io.github.wulkanowy.data.db.entities.Note
 import io.reactivex.Maybe
 import javax.inject.Singleton

@Singleton
@Dao
-interface NoteDao {
-
-    @Insert
-    fun insertAll(notes: List<Note>)
-
-    @Update
-    fun updateAll(notes: List<Note>)
-
-    @Delete
-    fun deleteAll(notes: List<Note>)
+interface NoteDao : BaseDao<Note> {

    @Query("SELECT * FROM Notes WHERE student_id = :studentId")
    fun loadAll(studentId: Int): Maybe<List<Note>>
-
 }
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/RecipientDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/RecipientDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Recipient
 import io.reactivex.Maybe
@ -10,13 +8,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface RecipientDao {
-
-    @Insert
-    fun insertAll(messages: List<Recipient>)
-
-    @Delete
-    fun deleteAll(messages: List<Recipient>)
+interface RecipientDao : BaseDao<Recipient> {

    @Query("SELECT * FROM Recipients WHERE student_id = :studentId AND role = :role AND unit_id = :unitId")
    fun load(studentId: Int, role: Int, unitId: Int): Maybe<List<Recipient>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/ReportingUnitDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/ReportingUnitDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.ReportingUnit
 import io.reactivex.Maybe
@ -10,13 +8,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface ReportingUnitDao {
-
-    @Insert
-    fun insertAll(reportingUnits: List<ReportingUnit>)
-
-    @Delete
-    fun deleteAll(reportingUnits: List<ReportingUnit>)
+interface ReportingUnitDao : BaseDao<ReportingUnit> {

    @Query("SELECT * FROM ReportingUnits WHERE student_id = :studentId")
    fun load(studentId: Int): Maybe<List<ReportingUnit>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/SchoolDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/SchoolDao.kt
@ -0,0 +1,15 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.School
+import io.reactivex.Maybe
+import javax.inject.Singleton
+
+@Singleton
+@Dao
+interface SchoolDao : BaseDao<School> {
+
+    @Query("SELECT * FROM School WHERE student_id = :studentId AND class_id = :classId")
+    fun load(studentId: Int, classId: Int): Maybe<School>
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/SemesterDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/SemesterDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Semester
 import io.reactivex.Maybe
@ -10,13 +8,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface SemesterDao {
-
-    @Insert
-    fun insertAll(semester: List<Semester>)
-
-    @Delete
-    fun deleteAll(semester: List<Semester>)
+interface SemesterDao : BaseDao<Semester> {

    @Query("SELECT * FROM Semesters WHERE student_id = :studentId AND class_id = :classId")
    fun loadAll(studentId: Int, classId: Int): Maybe<List<Semester>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/SubjectDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/SubjectDao.kt
@ -1,20 +1,12 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Subject
 import io.reactivex.Maybe

@Dao
-interface SubjectDao {
-
-    @Insert
-    fun insertAll(subjects: List<Subject>): List<Long>
-
-    @Delete
-    fun deleteAll(subjects: List<Subject>)
+interface SubjectDao : BaseDao<Subject> {

    @Query("SELECT * FROM Subjects WHERE diary_id = :diaryId AND student_id = :studentId")
    fun loadAll(diaryId: Int, studentId: Int): Maybe<List<Subject>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/TeacherDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/TeacherDao.kt
@ -0,0 +1,15 @@
+package io.github.wulkanowy.data.db.dao
+
+import androidx.room.Dao
+import androidx.room.Query
+import io.github.wulkanowy.data.db.entities.Teacher
+import io.reactivex.Maybe
+import javax.inject.Singleton
+
+@Singleton
+@Dao
+interface TeacherDao : BaseDao<Teacher> {
+
+    @Query("SELECT * FROM Teachers WHERE student_id = :studentId AND class_id = :classId")
+    fun loadAll(studentId: Int, classId: Int): Maybe<List<Teacher>>
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/dao/TimetableDao.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/dao/TimetableDao.kt
@ -1,8 +1,6 @@
 package io.github.wulkanowy.data.db.dao

 import androidx.room.Dao
-import androidx.room.Delete
-import androidx.room.Insert
 import androidx.room.Query
 import io.github.wulkanowy.data.db.entities.Timetable
 import io.reactivex.Maybe
@ -11,13 +9,7 @@ import javax.inject.Singleton

@Singleton
@Dao
-interface TimetableDao {
-
-    @Insert
-    fun insertAll(exams: List<Timetable>): List<Long>
-
-    @Delete
-    fun deleteAll(exams: List<Timetable>)
+interface TimetableDao : BaseDao<Timetable> {

    @Query("SELECT * FROM Timetable WHERE diary_id = :diaryId AND student_id = :studentId AND date >= :from AND date <= :end")
    fun loadAll(diaryId: Int, studentId: Int, from: LocalDate, end: LocalDate): Maybe<List<Timetable>>
--- a/app/src/main/java/io/github/wulkanowy/data/db/entities/Grade.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/entities/Grade.kt
@ -19,7 +19,7 @@ data class Grade(

    val entry: String,

-    val value: Int,
+    val value: Double,

    val modifier: Double,

--- a/app/src/main/java/io/github/wulkanowy/data/db/entities/GradePointsStatistics.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/entities/GradePointsStatistics.kt
@ -0,0 +1,24 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "GradesPointsStatistics")
+data class GradePointsStatistics(
+
+    @ColumnInfo(name = "student_id")
+    val studentId: Int,
+
+    @ColumnInfo(name = "semester_id")
+    val semesterId: Int,
+
+    val subject: String,
+
+    val others: Double,
+
+    val student: Double
+) {
+    @PrimaryKey(autoGenerate = true)
+    var id: Long = 0
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/entities/Message.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/entities/Message.kt
@ -29,6 +29,8 @@ data class Message(

    val subject: String,

+    var content: String,
+
    val date: LocalDateTime,

    @ColumnInfo(name = "folder_id")
@ -50,6 +52,4 @@ data class Message(

    @ColumnInfo(name = "is_notified")
    var isNotified: Boolean = true
-
-    var content: String? = null
 }
--- a/app/src/main/java/io/github/wulkanowy/data/db/entities/School.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/entities/School.kt
@ -0,0 +1,30 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.io.Serializable
+
+@Entity(tableName = "School")
+data class School(
+
+    @ColumnInfo(name = "student_id")
+    val studentId: Int,
+
+    @ColumnInfo(name = "class_id")
+    val classId: Int,
+
+    val name: String,
+
+    val address: String,
+
+    val contact: String,
+
+    val headmaster: String,
+
+    val pedagogue: String
+) : Serializable {
+
+    @PrimaryKey(autoGenerate = true)
+    var id: Long = 0
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/entities/Student.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/entities/Student.kt
@ -10,10 +10,27 @@ import java.io.Serializable
@Entity(tableName = "Students", indices = [Index(value = ["email", "symbol", "student_id", "school_id", "class_id"], unique = true)])
 data class Student(

-    val endpoint: String,
+    @ColumnInfo(name = "scrapper_base_url")
+    val scrapperBaseUrl: String,

+    @ColumnInfo(name = "mobile_base_url")
+    val mobileBaseUrl: String,
+
+    @ColumnInfo(name = "login_type")
    val loginType: String,

+    @ColumnInfo(name = "login_mode")
+    val loginMode: String,
+
+    @ColumnInfo(name = "certificate_key")
+    val certificateKey: String,
+
+    @ColumnInfo(name = "private_key")
+    val privateKey: String,
+
+    @ColumnInfo(name = "is_parent")
+    val isParent: Boolean,
+
    val email: String,

    var password: String,
@ -23,6 +40,9 @@ data class Student(
    @ColumnInfo(name = "student_id")
    val studentId: Int,

+    @ColumnInfo(name = "user_login_id")
+    val userLoginId: Int,
+
    @ColumnInfo(name = "student_name")
    val studentName: String,

--- a/app/src/main/java/io/github/wulkanowy/data/db/entities/Teacher.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/entities/Teacher.kt
@ -0,0 +1,27 @@
+package io.github.wulkanowy.data.db.entities
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+import java.io.Serializable
+
+@Entity(tableName = "Teachers")
+data class Teacher(
+
+    @ColumnInfo(name = "student_id")
+    val studentId: Int,
+
+    @ColumnInfo(name = "class_id")
+    val classId: Int,
+
+    val subject: String,
+
+    val name: String,
+
+    @ColumnInfo(name = "short_name")
+    val shortName: String
+) : Serializable {
+
+    @PrimaryKey(autoGenerate = true)
+    var id: Long = 0
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration16.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration16.kt
@ -0,0 +1,20 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration16 : Migration(15, 16) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS Teachers (
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                student_id INTEGER NOT NULL,
+                class_id INTEGER NOT NULL,
+                subject TEXT NOT NULL,
+                name TEXT NOT NULL,
+                short_name TEXT NOT NULL
+            )
+        """)
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration17.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration17.kt
@ -0,0 +1,29 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration17 : Migration(16, 17) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        createGradesPointsStatisticsTable(database)
+        truncateSemestersTable(database)
+    }
+
+    private fun createGradesPointsStatisticsTable(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS GradesPointsStatistics(
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                student_id INTEGER NOT NULL,
+                semester_id INTEGER NOT NULL,
+                subject TEXT NOT NULL,
+                others REAL NOT NULL,
+                student REAL NOT NULL
+            )
+        """)
+    }
+
+    private fun truncateSemestersTable(database: SupportSQLiteDatabase) {
+        database.execSQL("DELETE FROM Semesters")
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration18.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration18.kt
@ -0,0 +1,22 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+
+class Migration18 : Migration(17, 18) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS School (
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                student_id INTEGER NOT NULL,
+                class_id INTEGER NOT NULL,
+                name TEXT NOT NULL,
+                address TEXT NOT NULL,
+                contact TEXT NOT NULL,
+                headmaster TEXT NOT NULL,
+                pedagogue TEXT NOT NULL
+            )
+        """)
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration19.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration19.kt
@ -0,0 +1,119 @@
+package io.github.wulkanowy.data.db.migrations
+
+import androidx.room.migration.Migration
+import androidx.sqlite.db.SupportSQLiteDatabase
+import io.github.wulkanowy.data.db.SharedPrefProvider
+
+class Migration19(private val sharedPrefProvider: SharedPrefProvider) : Migration(18, 19) {
+
+    override fun migrate(database: SupportSQLiteDatabase) {
+        migrateMessages(database)
+        migrateGrades(database)
+        migrateStudents(database)
+        migrateSharedPreferences()
+    }
+
+    private fun migrateMessages(database: SupportSQLiteDatabase) {
+        database.execSQL("DROP TABLE Messages")
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS Messages (
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                is_notified INTEGER NOT NULL,
+                student_id INTEGER NOT NULL,
+                real_id INTEGER NOT NULL,
+                message_id INTEGER NOT NULL,
+                sender_name TEXT NOT NULL,
+                sender_id INTEGER NOT NULL,
+                recipient_name TEXT NOT NULL,
+                subject TEXT NOT NULL,
+                content TEXT NOT NULL,
+                date INTEGER NOT NULL,
+                folder_id INTEGER NOT NULL,
+                unread INTEGER NOT NULL,
+                unread_by INTEGER NOT NULL,
+                read_by INTEGER NOT NULL,
+                removed INTEGER NOT NULL
+            )
+        """)
+    }
+
+    private fun migrateGrades(database: SupportSQLiteDatabase) {
+        database.execSQL("DROP TABLE Grades")
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS Grades (
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                is_read INTEGER NOT NULL,
+                is_notified INTEGER NOT NULL,
+                semester_id INTEGER NOT NULL,
+                student_id INTEGER NOT NULL,
+                subject TEXT NOT NULL,
+                entry TEXT NOT NULL,
+                value REAL NOT NULL,
+                modifier REAL NOT NULL,
+                comment TEXT NOT NULL,
+                color TEXT NOT NULL,
+                grade_symbol TEXT NOT NULL,
+                description TEXT NOT NULL,
+                weight TEXT NOT NULL,
+                weightValue REAL NOT NULL,
+                date INTEGER NOT NULL,
+                teacher TEXT NOT NULL
+            )
+        """)
+    }
+
+    private fun migrateStudents(database: SupportSQLiteDatabase) {
+        database.execSQL("""
+            CREATE TABLE IF NOT EXISTS Students_tmp (
+                id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+                scrapper_base_url TEXT NOT NULL,
+                mobile_base_url TEXT NOT NULL,
+                is_parent INTEGER NOT NULL,
+                login_type TEXT NOT NULL,
+                login_mode TEXT NOT NULL,
+                certificate_key TEXT NOT NULL,
+                private_key TEXT NOT NULL,
+                email TEXT NOT NULL,
+                password TEXT NOT NULL,
+                symbol TEXT NOT NULL,
+                student_id INTEGER NOT NULL,
+                user_login_id INTEGER NOT NULL,
+                student_name TEXT NOT NULL,
+                school_id TEXT NOT NULL,
+                school_name TEXT NOT NULL,
+                class_name TEXT NOT NULL,
+                class_id INTEGER NOT NULL,
+                is_current INTEGER NOT NULL,
+                registration_date INTEGER NOT NULL
+            )
+        """)
+
+        database.execSQL("ALTER TABLE Students ADD COLUMN scrapperBaseUrl TEXT NOT NULL DEFAULT \"\";")
+        database.execSQL("ALTER TABLE Students ADD COLUMN apiBaseUrl TEXT NOT NULL DEFAULT \"\";")
+        database.execSQL("ALTER TABLE Students ADD COLUMN is_parent INT NOT NULL DEFAULT 0;")
+        database.execSQL("ALTER TABLE Students ADD COLUMN loginMode TEXT NOT NULL DEFAULT \"\";")
+        database.execSQL("ALTER TABLE Students ADD COLUMN certificateKey TEXT NOT NULL DEFAULT \"\";")
+        database.execSQL("ALTER TABLE Students ADD COLUMN privateKey TEXT NOT NULL DEFAULT \"\";")
+        database.execSQL("ALTER TABLE Students ADD COLUMN user_login_id INTEGER NOT NULL DEFAULT 0;")
+
+        database.execSQL("""
+            INSERT INTO Students_tmp(
+            id, scrapper_base_url, mobile_base_url, is_parent, login_type, login_mode, certificate_key, private_key, email, password, symbol, student_id, user_login_id, student_name, school_id, school_name, school_id, school_name, class_name, class_id, is_current, registration_date)
+            SELECT
+            id, endpoint, apiBaseUrl, is_parent, loginType, "SCRAPPER", certificateKey, privateKey, email, password, symbol, student_id, user_login_id, student_name, school_id, school_name, school_id, school_name, class_name, class_id, is_current, registration_date
+            FROM Students
+        """)
+        database.execSQL("DROP TABLE Students")
+        database.execSQL("ALTER TABLE Students_tmp RENAME TO Students")
+        database.execSQL("CREATE UNIQUE INDEX index_Students_email_symbol_student_id_school_id_class_id ON Students (email, symbol, student_id, school_id, class_id)")
+    }
+
+    private fun migrateSharedPreferences() {
+        if (sharedPrefProvider.getString("grade_modifier_plus", "0.0") == "0.0") {
+            sharedPrefProvider.putString("grade_modifier_plus", "0.33")
+        }
+        if (sharedPrefProvider.getString("grade_modifier_minus", "0.0") == "0.0") {
+            sharedPrefProvider.putString("grade_modifier_minus", "0.33")
+        }
+    }
+}
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/attendance/AttendanceRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/attendance/AttendanceRemote.kt
@ -1,25 +1,24 @@
 package io.github.wulkanowy.data.repositories.attendance

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.Attendance
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.utils.toLocalDate
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import org.threeten.bp.LocalDate
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class AttendanceRemote @Inject constructor(private val api: Api) {
+class AttendanceRemote @Inject constructor(private val sdk: Sdk) {

    fun getAttendance(semester: Semester, startDate: LocalDate, endDate: LocalDate): Single<List<Attendance>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getAttendance(startDate, endDate) }.map { attendance ->
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getAttendance(startDate, endDate, semester.semesterId)
+            .map { attendance ->
                attendance.map {
                    Attendance(
                        studentId = semester.studentId,
                        diaryId = semester.diaryId,
-                        date = it.date.toLocalDate(),
+                        date = it.date,
                        number = it.number,
                        subject = it.subject,
                        name = it.name,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/attendancesummary/AttendanceSummaryRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/attendancesummary/AttendanceSummaryRemote.kt
@ -1,18 +1,18 @@
 package io.github.wulkanowy.data.repositories.attendancesummary

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.AttendanceSummary
 import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class AttendanceSummaryRemote @Inject constructor(private val api: Api) {
+class AttendanceSummaryRemote @Inject constructor(private val sdk: Sdk) {

    fun getAttendanceSummary(semester: Semester, subjectId: Int): Single<List<AttendanceSummary>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { api.getAttendanceSummary(subjectId) }.map { attendance ->
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getAttendanceSummary(subjectId)
+            .map { attendance ->
                attendance.map {
                    AttendanceSummary(
                        studentId = semester.studentId,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/completedlessons/CompletedLessonsRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/completedlessons/CompletedLessonsRemote.kt
@ -1,27 +1,25 @@
 package io.github.wulkanowy.data.repositories.completedlessons

-import io.github.wulkanowy.api.Api
-import io.github.wulkanowy.api.toLocalDate
 import io.github.wulkanowy.data.db.entities.CompletedLesson
 import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import org.threeten.bp.LocalDate
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class CompletedLessonsRemote @Inject constructor(private val api: Api) {
+class CompletedLessonsRemote @Inject constructor(private val sdk: Sdk) {

    fun getCompletedLessons(semester: Semester, startDate: LocalDate, endDate: LocalDate): Single<List<CompletedLesson>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getCompletedLessons(startDate, endDate) }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getCompletedLessons(startDate, endDate)
            .map { lessons ->
                lessons.map {
                    it.absence
                    CompletedLesson(
                        studentId = semester.studentId,
                        diaryId = semester.diaryId,
-                        date = it.date.toLocalDate(),
+                        date = it.date,
                        number = it.number,
                        subject = it.subject,
                        topic = it.topic,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/exam/ExamRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/exam/ExamRemote.kt
@ -1,26 +1,25 @@
 package io.github.wulkanowy.data.repositories.exam

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.Exam
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.utils.toLocalDate
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import org.threeten.bp.LocalDate
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class ExamRemote @Inject constructor(private val api: Api) {
+class ExamRemote @Inject constructor(private val sdk: Sdk) {

    fun getExams(semester: Semester, startDate: LocalDate, endDate: LocalDate): Single<List<Exam>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getExams(startDate, endDate) }.map { exams ->
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getExams(startDate, endDate, semester.semesterId)
+            .map { exams ->
                exams.map {
                    Exam(
                        studentId = semester.studentId,
                        diaryId = semester.diaryId,
-                        date = it.date.toLocalDate(),
-                        entryDate = it.entryDate.toLocalDate(),
+                        date = it.date,
+                        entryDate = it.entryDate,
                        subject = it.subject,
                        group = it.group,
                        type = it.type,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/grade/GradeRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/grade/GradeRemote.kt
@ -1,35 +1,33 @@
 package io.github.wulkanowy.data.repositories.grade

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.Grade
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.utils.toLocalDate
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class GradeRemote @Inject constructor(private val api: Api) {
+class GradeRemote @Inject constructor(private val sdk: Sdk) {

    fun getGrades(semester: Semester): Single<List<Grade>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getGrades(semester.semesterId) }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getGrades(semester.semesterId)
            .map { grades ->
                grades.map {
                    Grade(
-                        semesterId = semester.semesterId,
                        studentId = semester.studentId,
+                        semesterId = semester.semesterId,
                        subject = it.subject,
                        entry = it.entry,
                        value = it.value,
                        modifier = it.modifier,
                        comment = it.comment,
                        color = it.color,
-                        gradeSymbol = it.symbol.orEmpty(),
-                        description = it.description.orEmpty(),
+                        gradeSymbol = it.symbol,
+                        description = it.description,
                        weight = it.weight,
                        weightValue = it.weightValue,
-                        date = it.date.toLocalDate(),
+                        date = it.date,
                        teacher = it.teacher
                    )
                }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/gradessummary/GradeSummaryRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/gradessummary/GradeSummaryRemote.kt
@ -1,24 +1,23 @@
 package io.github.wulkanowy.data.repositories.gradessummary

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.GradeSummary
 import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class GradeSummaryRemote @Inject constructor(private val api: Api) {
+class GradeSummaryRemote @Inject constructor(private val sdk: Sdk) {

    fun getGradeSummary(semester: Semester): Single<List<GradeSummary>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getGradesSummary(semester.semesterId) }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getGradesSummary(semester.semesterId)
            .map { gradesSummary ->
                gradesSummary.map {
                    GradeSummary(
                        semesterId = semester.semesterId,
                        studentId = semester.studentId,
-                        position = it.order,
+                        position = 0,
                        subject = it.name,
                        predictedGrade = it.predicted,
                        finalGrade = it.final,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsLocal.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsLocal.kt
@ -1,6 +1,8 @@
 package io.github.wulkanowy.data.repositories.gradestatistics

+import io.github.wulkanowy.data.db.dao.GradePointsStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeStatisticsDao
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
 import io.reactivex.Maybe
@ -8,27 +10,57 @@ import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class GradeStatisticsLocal @Inject constructor(private val gradeStatisticsDb: GradeStatisticsDao) {
+class GradeStatisticsLocal @Inject constructor(
+    private val gradeStatisticsDb: GradeStatisticsDao,
+    private val gradePointsStatisticsDb: GradePointsStatisticsDao
+) {

    fun getGradesStatistics(semester: Semester, isSemester: Boolean): Maybe<List<GradeStatistics>> {
-        return gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester)
-            .filter { !it.isEmpty() }
+        return gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester).filter { it.isNotEmpty() }
+    }
+
+    fun getGradesPointsStatistics(semester: Semester): Maybe<List<GradePointsStatistics>> {
+        return gradePointsStatisticsDb.loadAll(semester.semesterId, semester.studentId).filter { it.isNotEmpty() }
    }

    fun getGradesStatistics(semester: Semester, isSemester: Boolean, subjectName: String): Maybe<List<GradeStatistics>> {
-        return (if ("Wszystkie" == subjectName) gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester).map { list ->
-            list.groupBy { it.grade }.map {
-                GradeStatistics(semester.studentId, semester.semesterId, subjectName, it.key, it.value.fold(0) { acc, e -> acc + e.amount }, false)
+        return when (subjectName) {
+            "Wszystkie" -> gradeStatisticsDb.loadAll(semester.semesterId, semester.studentId, isSemester).map { list ->
+                list.groupBy { it.grade }.map {
+                    GradeStatistics(semester.studentId, semester.semesterId, subjectName, it.key,
+                        it.value.fold(0) { acc, e -> acc + e.amount }, false)
+                }
            }
+            else -> gradeStatisticsDb.loadSubject(semester.semesterId, semester.studentId, subjectName, isSemester)
+        }.filter { it.isNotEmpty() }
+    }
+
+    fun getGradesPointsStatistics(semester: Semester, subjectName: String): Maybe<GradePointsStatistics> {
+        return when (subjectName) {
+            "Wszystkie" -> gradePointsStatisticsDb.loadAll(semester.semesterId, semester.studentId).flatMap { list ->
+                if (list.isEmpty()) return@flatMap Maybe.empty<GradePointsStatistics>()
+                Maybe.just(GradePointsStatistics(semester.studentId, semester.semesterId, subjectName,
+                    list.fold(.0) { acc, e -> acc + e.others },
+                    list.fold(.0) { acc, e -> acc + e.student })
+                )
+            }
+            else -> gradePointsStatisticsDb.loadSubject(semester.semesterId, semester.studentId, subjectName)
        }
-        else gradeStatisticsDb.loadSubject(semester.semesterId, semester.studentId, subjectName, isSemester)).filter { !it.isEmpty() }
    }

    fun saveGradesStatistics(gradesStatistics: List<GradeStatistics>) {
        gradeStatisticsDb.insertAll(gradesStatistics)
    }

+    fun saveGradesPointsStatistics(gradePointsStatistics: List<GradePointsStatistics>) {
+        gradePointsStatisticsDb.insertAll(gradePointsStatistics)
+    }
+
    fun deleteGradesStatistics(gradesStatistics: List<GradeStatistics>) {
        gradeStatisticsDb.deleteAll(gradesStatistics)
    }
+
+    fun deleteGradesPointsStatistics(gradesPointsStatistics: List<GradePointsStatistics>) {
+        gradePointsStatisticsDb.deleteAll(gradesPointsStatistics)
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsRemote.kt
@ -1,27 +1,44 @@
 package io.github.wulkanowy.data.repositories.gradestatistics

-import io.github.wulkanowy.api.Api
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class GradeStatisticsRemote @Inject constructor(private val api: Api) {
+class GradeStatisticsRemote @Inject constructor(private val sdk: Sdk) {

    fun getGradeStatistics(semester: Semester, isSemester: Boolean): Single<List<GradeStatistics>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getGradesStatistics(semester.semesterId, isSemester) }
-            .map { gradeStatistics ->
-                gradeStatistics.map {
-                    GradeStatistics(
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).let {
+            if (isSemester) it.getGradesAnnualStatistics(semester.semesterId)
+            else it.getGradesPartialStatistics(semester.semesterId)
+        }.map { gradeStatistics ->
+            gradeStatistics.map {
+                GradeStatistics(
+                    semesterId = semester.semesterId,
+                    studentId = semester.studentId,
+                    subject = it.subject,
+                    grade = it.gradeValue,
+                    amount = it.amount,
+                    semester = isSemester
+                )
+            }
+        }
+    }
+
+    fun getGradePointsStatistics(semester: Semester): Single<List<GradePointsStatistics>> {
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getGradesPointsStatistics(semester.semesterId)
+            .map { gradePointsStatistics ->
+                gradePointsStatistics.map {
+                    GradePointsStatistics(
                        semesterId = semester.semesterId,
                        studentId = semester.studentId,
                        subject = it.subject,
-                        grade = it.gradeValue,
-                        amount = it.amount ?: 0,
-                        semester = isSemester
+                        others = it.others,
+                        student = it.student
                    )
                }
            }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/gradestatistics/GradeStatisticsRepository.kt
@ -2,9 +2,11 @@ package io.github.wulkanowy.data.repositories.gradestatistics

 import com.github.pwittchen.reactivenetwork.library.rx2.ReactiveNetwork
 import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
+import io.github.wulkanowy.data.db.entities.GradePointsStatistics
 import io.github.wulkanowy.data.db.entities.GradeStatistics
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.utils.uniqueSubtract
+import io.reactivex.Maybe
 import io.reactivex.Single
 import java.net.UnknownHostException
 import javax.inject.Inject
@ -31,4 +33,19 @@ class GradeStatisticsRepository @Inject constructor(
                        }
                }.flatMap { local.getGradesStatistics(semester, isSemester, subjectName).toSingle(emptyList()) })
    }
+
+    fun getGradesPointsStatistics(semester: Semester, subjectName: String, forceRefresh: Boolean): Maybe<GradePointsStatistics> {
+        return local.getGradesPointsStatistics(semester, subjectName).filter { !forceRefresh }
+            .switchIfEmpty(ReactiveNetwork.checkInternetConnectivity(settings)
+                .flatMapMaybe {
+                    if (it) remote.getGradePointsStatistics(semester).toMaybe()
+                    else Maybe.error(UnknownHostException())
+                }.flatMap { new ->
+                    local.getGradesPointsStatistics(semester).defaultIfEmpty(emptyList())
+                        .doOnSuccess { old ->
+                            local.deleteGradesPointsStatistics(old.uniqueSubtract(new))
+                            local.saveGradesPointsStatistics(new.uniqueSubtract(old))
+                        }
+                }.flatMap { local.getGradesPointsStatistics(semester, subjectName) })
+    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/homework/HomeworkRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/homework/HomeworkRemote.kt
@ -1,27 +1,25 @@
 package io.github.wulkanowy.data.repositories.homework

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.Homework
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.utils.toLocalDate
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import org.threeten.bp.LocalDate
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class HomeworkRemote @Inject constructor(private val api: Api) {
+class HomeworkRemote @Inject constructor(private val sdk: Sdk) {

    fun getHomework(semester: Semester, startDate: LocalDate, endDate: LocalDate): Single<List<Homework>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getHomework(startDate, endDate) }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getHomework(startDate, endDate)
            .map { homework ->
                homework.map {
                    Homework(
                        semesterId = semester.semesterId,
                        studentId = semester.studentId,
-                        date = it.date.toLocalDate(),
-                        entryDate = it.entryDate.toLocalDate(),
+                        date = it.date,
+                        entryDate = it.entryDate,
                        subject = it.subject,
                        content = it.content,
                        teacher = it.teacher,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/luckynumber/LuckyNumberLocal.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/luckynumber/LuckyNumberLocal.kt
@ -12,15 +12,15 @@ import javax.inject.Singleton
 class LuckyNumberLocal @Inject constructor(private val luckyNumberDb: LuckyNumberDao) {

    fun saveLuckyNumber(luckyNumber: LuckyNumber) {
-        luckyNumberDb.insert(luckyNumber)
+        luckyNumberDb.insertAll(listOf(luckyNumber))
    }

    fun updateLuckyNumber(luckyNumber: LuckyNumber) {
-        luckyNumberDb.update(luckyNumber)
+        luckyNumberDb.updateAll(listOf(luckyNumber))
    }

    fun deleteLuckyNumber(luckyNumber: LuckyNumber) {
-        luckyNumberDb.delete(luckyNumber)
+        luckyNumberDb.deleteAll(listOf(luckyNumber))
    }

    fun getLuckyNumber(semester: Semester, date: LocalDate): Maybe<LuckyNumber> {
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/luckynumber/LuckyNumberRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/luckynumber/LuckyNumberRemote.kt
@ -1,20 +1,18 @@
 package io.github.wulkanowy.data.repositories.luckynumber

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.LuckyNumber
 import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Maybe
-import io.reactivex.Single
 import org.threeten.bp.LocalDate
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class LuckyNumberRemote @Inject constructor(private val api: Api) {
+class LuckyNumberRemote @Inject constructor(private val sdk: Sdk) {

    fun getLuckyNumber(semester: Semester): Maybe<LuckyNumber> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMapMaybe { it.getLuckyNumber() }
+        return sdk.getLuckyNumber()
            .map {
                LuckyNumber(
                    studentId = semester.studentId,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRemote.kt
@ -1,24 +1,23 @@
 package io.github.wulkanowy.data.repositories.message

-import io.github.wulkanowy.api.Api
-import io.github.wulkanowy.api.messages.Folder
-import io.github.wulkanowy.api.messages.SentMessage
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.Recipient
+import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.utils.toLocalDateTime
+import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.sdk.pojo.Folder
+import io.github.wulkanowy.sdk.pojo.SentMessage
 import io.reactivex.Single
 import org.threeten.bp.LocalDateTime.now
 import javax.inject.Inject
 import javax.inject.Singleton
-import io.github.wulkanowy.api.messages.Message as ApiMessage
-import io.github.wulkanowy.api.messages.Recipient as ApiRecipient
+import io.github.wulkanowy.sdk.pojo.Recipient as SdkRecipient

@Singleton
-class MessageRemote @Inject constructor(private val api: Api) {
+class MessageRemote @Inject constructor(private val sdk: Sdk) {

-    fun getMessages(student: Student, folder: MessageFolder): Single<List<Message>> {
-        return api.getMessages(Folder.valueOf(folder.name)).map { messages ->
+    fun getMessages(student: Student, semester: Semester, folder: MessageFolder): Single<List<Message>> {
+        return sdk.getMessages(Folder.valueOf(folder.name), semester.start.atStartOfDay(), semester.end.atStartOfDay()).map { messages ->
            messages.map {
                Message(
                    studentId = student.id.toInt(),
@ -28,7 +27,8 @@ class MessageRemote @Inject constructor(private val api: Api) {
                    senderId = it.senderId ?: 0,
                    recipient = it.recipient.orEmpty(),
                    subject = it.subject.trim(),
-                    date = it.date?.toLocalDateTime() ?: now(),
+                    date = it.date ?: now(),
+                    content = it.content.orEmpty(),
                    folderId = it.folderId,
                    unread = it.unread ?: false,
                    unreadBy = it.unreadBy ?: 0,
@ -40,27 +40,28 @@ class MessageRemote @Inject constructor(private val api: Api) {
    }

    fun getMessagesContent(message: Message, markAsRead: Boolean = false): Single<String> {
-        return api.getMessageContent(message.messageId, message.folderId, markAsRead, message.realId)
+        return sdk.getMessageContent(message.messageId, message.folderId, markAsRead, message.realId)
    }

    fun sendMessage(subject: String, content: String, recipients: List<Recipient>): Single<SentMessage> {
-        return api.sendMessage(
+        return sdk.sendMessage(
            subject = subject,
            content = content,
            recipients = recipients.map {
-                ApiRecipient(
+                SdkRecipient(
                    id = it.realId,
                    name = it.realName,
                    loginId = it.loginId,
                    reportingUnitId = it.unitId,
                    role = it.role,
-                    hash = it.hash
+                    hash = it.hash,
+                    shortName = it.name
                )
            }
        )
    }

    fun deleteMessage(message: Message): Single<Boolean> {
-        return api.deleteMessages(listOf(Pair(message.realId, message.folderId)))
+        return sdk.deleteMessages(listOf(Pair(message.realId, message.folderId)))
    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/message/MessageRepository.kt
@ -2,12 +2,13 @@ package io.github.wulkanowy.data.repositories.message

 import com.github.pwittchen.reactivenetwork.library.rx2.ReactiveNetwork
 import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
-import io.github.wulkanowy.api.messages.SentMessage
-import io.github.wulkanowy.data.ApiHelper
+import io.github.wulkanowy.data.SdkHelper
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.Recipient
+import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.repositories.message.MessageFolder.RECEIVED
+import io.github.wulkanowy.sdk.pojo.SentMessage
 import io.github.wulkanowy.utils.uniqueSubtract
 import io.reactivex.Completable
 import io.reactivex.Maybe
@ -21,16 +22,16 @@ class MessageRepository @Inject constructor(
    private val settings: InternetObservingSettings,
    private val local: MessageLocal,
    private val remote: MessageRemote,
-    private val apiHelper: ApiHelper
+    private val sdkHelper: SdkHelper
 ) {

-    fun getMessages(student: Student, folder: MessageFolder, forceRefresh: Boolean = false, notify: Boolean = false): Single<List<Message>> {
-        return Single.just(apiHelper.initApi(student))
+    fun getMessages(student: Student, semester: Semester, folder: MessageFolder, forceRefresh: Boolean = false, notify: Boolean = false): Single<List<Message>> {
+        return Single.just(sdkHelper.init(student))
            .flatMap { _ ->
                local.getMessages(student, folder).filter { !forceRefresh }
                    .switchIfEmpty(ReactiveNetwork.checkInternetConnectivity(settings)
                        .flatMap {
-                            if (it) remote.getMessages(student, folder)
+                            if (it) remote.getMessages(student, semester, folder)
                            else Single.error(UnknownHostException())
                        }.flatMap { new ->
                            local.getMessages(student, folder).toSingle(emptyList())
@ -47,10 +48,10 @@ class MessageRepository @Inject constructor(
    }

    fun getMessage(student: Student, messageDbId: Long, markAsRead: Boolean = false): Single<Message> {
-        return Single.just(apiHelper.initApi(student))
+        return Single.just(sdkHelper.init(student))
            .flatMap { _ ->
                local.getMessage(messageDbId)
-                    .filter { !it.content.isNullOrEmpty() }
+                    .filter { it.content.isNotEmpty() }
                    .switchIfEmpty(ReactiveNetwork.checkInternetConnectivity(settings)
                        .flatMap {
                            if (it) local.getMessage(messageDbId).toSingle()
@ -60,7 +61,7 @@ class MessageRepository @Inject constructor(
                            remote.getMessagesContent(dbMessage, markAsRead).doOnSuccess {
                                local.updateMessages(listOf(dbMessage.copy(unread = false).apply {
                                    id = dbMessage.id
-                                    content = it
+                                    content = content.ifBlank { it }
                                }))
                            }
                        }.flatMap {
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/mobiledevice/MobileDeviceLocal.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/mobiledevice/MobileDeviceLocal.kt
@ -3,7 +3,6 @@ package io.github.wulkanowy.data.repositories.mobiledevice
 import io.github.wulkanowy.data.db.dao.MobileDeviceDao
 import io.github.wulkanowy.data.db.entities.MobileDevice
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.data.db.entities.Student
 import io.reactivex.Maybe
 import javax.inject.Inject
 import javax.inject.Singleton
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/mobiledevice/MobileDeviceRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/mobiledevice/MobileDeviceRemote.kt
@ -1,25 +1,23 @@
 package io.github.wulkanowy.data.repositories.mobiledevice

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.MobileDevice
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.pojos.MobileDeviceToken
-import io.github.wulkanowy.utils.toLocalDateTime
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class MobileDeviceRemote @Inject constructor(private val api: Api) {
+class MobileDeviceRemote @Inject constructor(private val sdk: Sdk) {

    fun getDevices(semester: Semester): Single<List<MobileDevice>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { api.getRegisteredDevices() }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getRegisteredDevices()
            .map { devices ->
                devices.map {
                    MobileDevice(
                        studentId = semester.studentId,
-                        date = it.date.toLocalDateTime(),
+                        date = it.date,
                        deviceId = it.id,
                        name = it.name
                    )
@ -28,13 +26,11 @@ class MobileDeviceRemote @Inject constructor(private val api: Api) {
    }

    fun unregisterDevice(semester: Semester, device: MobileDevice): Single<Boolean> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { api.unregisterDevice(device.deviceId) }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).unregisterDevice(device.deviceId)
    }

    fun getToken(semester: Semester): Single<MobileDeviceToken> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { api.getToken() }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getToken()
            .map {
                MobileDeviceToken(
                    token = it.token,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/mobiledevice/MobileDeviceRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/mobiledevice/MobileDeviceRepository.kt
@ -35,10 +35,18 @@ class MobileDeviceRepository @Inject constructor(
    }

    fun unregisterDevice(semester: Semester, device: MobileDevice): Single<Boolean> {
-        return remote.unregisterDevice(semester, device)
+        return ReactiveNetwork.checkInternetConnectivity(settings)
+            .flatMap {
+                if (it) remote.unregisterDevice(semester, device)
+                else Single.error(UnknownHostException())
+            }
    }

    fun getToken(semester: Semester): Single<MobileDeviceToken> {
-        return remote.getToken(semester)
+        return ReactiveNetwork.checkInternetConnectivity(settings)
+            .flatMap {
+                if (it) remote.getToken(semester)
+                else Single.error(UnknownHostException())
+            }
    }
 }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/note/NoteRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/note/NoteRemote.kt
@ -1,24 +1,22 @@
 package io.github.wulkanowy.data.repositories.note

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.Note
 import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.utils.toLocalDate
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class NoteRemote @Inject constructor(private val api: Api) {
+class NoteRemote @Inject constructor(private val sdk: Sdk) {

    fun getNotes(semester: Semester): Single<List<Note>> {
-        return Single.just(api.apply { diaryId = semester.diaryId })
-            .flatMap { it.getNotes() }
+        return sdk.switchDiary(semester.diaryId, semester.schoolYear).getNotes(semester.semesterId)
            .map { notes ->
                notes.map {
                    Note(
                        studentId = semester.studentId,
-                        date = it.date.toLocalDate(),
+                        date = it.date,
                        teacher = it.teacher,
                        category = it.category,
                        content = it.content
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/preferences/PreferencesRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/preferences/PreferencesRepository.kt
@ -12,49 +12,64 @@ class PreferencesRepository @Inject constructor(
    val context: Context
 ) {
    val startMenuIndex: Int
-        get() = sharedPref.getString(context.getString(R.string.pref_key_start_menu), "0")?.toIntOrNull() ?: 0
+        get() = getString(R.string.pref_key_start_menu, R.string.pref_default_startup).toInt()

    val isShowPresent: Boolean
-        get() = sharedPref.getBoolean(context.getString(R.string.pref_key_attendance_present), true)
+        get() = getBoolean(R.string.pref_key_attendance_present, R.bool.pref_default_attendance_present)

    val gradeAverageMode: String
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_average_mode), "only_one_semester") ?: "only_one_semester"
+        get() = getString(R.string.pref_key_grade_average_mode, R.string.pref_default_grade_average_mode)
+
+    val gradeAverageForceCalc: Boolean
+        get() = getBoolean(R.string.pref_key_grade_average_force_calc, R.bool.pref_default_grade_average_force_calc)

    val isGradeExpandable: Boolean
-        get() = !sharedPref.getBoolean(context.getString(R.string.pref_key_expand_grade), false)
+        get() = !getBoolean(R.string.pref_key_expand_grade, R.bool.pref_default_expand_grade)

-    val appThemeKey: String = context.getString(R.string.pref_key_app_theme)
+    val appThemeKey = context.getString(R.string.pref_key_app_theme)
    val appTheme: String
-        get() = sharedPref.getString(appThemeKey, "light") ?: "light"
+        get() = getString(appThemeKey, R.string.pref_default_app_theme)

    val gradeColorTheme: String
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_color_scheme), "vulcan") ?: "vulcan"
+        get() = getString(R.string.pref_key_grade_color_scheme, R.string.pref_default_grade_color_scheme)

-    val serviceEnableKey: String = context.getString(R.string.pref_key_services_enable)
+    val appLanguageKey = context.getString(R.string.pref_key_app_language)
+    val appLanguage
+        get() = getString(appLanguageKey, R.string.pref_default_app_language)
+
+    val serviceEnableKey = context.getString(R.string.pref_key_services_enable)
    val isServiceEnabled: Boolean
-        get() = sharedPref.getBoolean(serviceEnableKey, true)
+        get() = getBoolean(serviceEnableKey, R.bool.pref_default_services_enable)

-    val servicesIntervalKey: String = context.getString(R.string.pref_key_services_interval)
+    val servicesIntervalKey = context.getString(R.string.pref_key_services_interval)
    val servicesInterval: Long
-        get() = sharedPref.getString(servicesIntervalKey, "60")?.toLongOrNull() ?: 60
+        get() = getString(servicesIntervalKey, R.string.pref_default_services_interval).toLong()

-    val servicesOnlyWifiKey: String = context.getString(R.string.pref_key_services_wifi_only)
+    val servicesOnlyWifiKey = context.getString(R.string.pref_key_services_wifi_only)
    val isServicesOnlyWifi: Boolean
-        get() = sharedPref.getBoolean(servicesOnlyWifiKey, false)
+        get() = getBoolean(servicesOnlyWifiKey, R.bool.pref_default_services_wifi_only)

    val isNotificationsEnable: Boolean
-        get() = sharedPref.getBoolean(context.getString(R.string.pref_key_notifications_enable), true)
+        get() = getBoolean(R.string.pref_key_notifications_enable, R.bool.pref_default_notifications_enable)

-    val isDebugNotificationEnableKey: String = context.getString(R.string.pref_key_notification_debug)
+    val isDebugNotificationEnableKey = context.getString(R.string.pref_key_notification_debug)
    val isDebugNotificationEnable: Boolean
-        get() = sharedPref.getBoolean(isDebugNotificationEnableKey, false)
+        get() = getBoolean(isDebugNotificationEnableKey, R.bool.pref_default_notification_debug)

    val gradePlusModifier: Double
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_modifier_plus), "0.0")?.toDouble() ?: 0.0
+        get() = getString(R.string.pref_key_grade_modifier_plus, R.string.pref_default_grade_modifier_plus).toDouble()

    val gradeMinusModifier: Double
-        get() = sharedPref.getString(context.getString(R.string.pref_key_grade_modifier_minus), "0.0")?.toDouble() ?: 0.0
+        get() = getString(R.string.pref_key_grade_modifier_minus, R.string.pref_default_grade_modifier_minus).toDouble()

    val fillMessageContent: Boolean
-        get() = sharedPref.getBoolean(context.getString(R.string.pref_key_fill_message_content), true)
+        get() = getBoolean(R.string.pref_key_fill_message_content, R.bool.pref_default_fill_message_content)
+
+    private fun getString(id: Int, default: Int) = getString(context.getString(id), default)
+
+    private fun getString(id: String, default: Int) = sharedPref.getString(id, context.getString(default)) ?: context.getString(default)
+
+    private fun getBoolean(id: Int, default: Int) = getBoolean(context.getString(id), default)
+
+    private fun getBoolean(id: String, default: Int) = sharedPref.getBoolean(id, context.resources.getBoolean(default))
 }
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientLocal.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientLocal.kt
@ -15,7 +15,7 @@ class RecipientLocal @Inject constructor(private val recipientDb: RecipientDao)
        return recipientDb.load(student.studentId, role, unit.realId).filter { !it.isEmpty() }
    }

-    fun saveRecipients(recipients: List<Recipient>) {
+    fun saveRecipients(recipients: List<Recipient>): List<Long> {
        return recipientDb.insertAll(recipients)
    }

--- a/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRemote.kt
@ -1,34 +1,34 @@
 package io.github.wulkanowy.data.repositories.recipient

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.Recipient
 import io.github.wulkanowy.data.db.entities.ReportingUnit
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton
-import io.github.wulkanowy.api.messages.Recipient as ApiRecipient
+import io.github.wulkanowy.sdk.pojo.Recipient as SdkRecipient

@Singleton
-class RecipientRemote @Inject constructor(private val api: Api) {
+class RecipientRemote @Inject constructor(private val sdk: Sdk) {

    fun getRecipients(role: Int, unit: ReportingUnit): Single<List<Recipient>> {
-        return api.getRecipients(unit.realId, role)
+        return sdk.getRecipients(unit.realId, role)
            .map { recipients ->
                recipients.map { it.toRecipient() }
            }
    }

    fun getMessageRecipients(message: Message): Single<List<Recipient>> {
-        return api.getMessageRecipients(message.messageId, message.senderId)
+        return sdk.getMessageRecipients(message.messageId, message.senderId)
            .map { recipients ->
                recipients.map { it.toRecipient() }
            }
    }

-    private fun ApiRecipient.toRecipient(): Recipient {
+    private fun SdkRecipient.toRecipient(): Recipient {
        return Recipient(
-            studentId = api.studentId,
+            studentId = sdk.studentId,
            realId = id,
            realName = name,
            name = shortName,
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/recipient/RecipientRepository.kt
@ -2,7 +2,7 @@ package io.github.wulkanowy.data.repositories.recipient

 import com.github.pwittchen.reactivenetwork.library.rx2.ReactiveNetwork
 import com.github.pwittchen.reactivenetwork.library.rx2.internet.observing.InternetObservingSettings
-import io.github.wulkanowy.data.ApiHelper
+import io.github.wulkanowy.data.SdkHelper
 import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.Recipient
 import io.github.wulkanowy.data.db.entities.ReportingUnit
@ -18,11 +18,11 @@ class RecipientRepository @Inject constructor(
    private val settings: InternetObservingSettings,
    private val local: RecipientLocal,
    private val remote: RecipientRemote,
-    private val apiHelper: ApiHelper
+    private val sdkHelper: SdkHelper
 ) {

    fun getRecipients(student: Student, role: Int, unit: ReportingUnit, forceRefresh: Boolean = false): Single<List<Recipient>> {
-        return Single.just(apiHelper.initApi(student))
+        return Single.just(sdkHelper.init(student))
            .flatMap { _ ->
                local.getRecipients(student, role, unit).filter { !forceRefresh }
                    .switchIfEmpty(ReactiveNetwork.checkInternetConnectivity(settings)
@ -43,7 +43,7 @@ class RecipientRepository @Inject constructor(
    }

    fun getMessageRecipients(student: Student, message: Message): Single<List<Recipient>> {
-        return Single.just(apiHelper.initApi(student))
+        return Single.just(sdkHelper.init(student))
            .flatMap { ReactiveNetwork.checkInternetConnectivity(settings) }
            .flatMap {
                if (it) remote.getMessageRecipients(message)
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/reportingunit/ReportingUnitLocal.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/reportingunit/ReportingUnitLocal.kt
@ -18,7 +18,7 @@ class ReportingUnitLocal @Inject constructor(private val reportingUnitDb: Report
        return reportingUnitDb.loadOne(student.studentId, unitId)
    }

-    fun saveReportingUnits(reportingUnits: List<ReportingUnit>) {
+    fun saveReportingUnits(reportingUnits: List<ReportingUnit>): List<Long> {
        return reportingUnitDb.insertAll(reportingUnits)
    }

--- a/app/src/main/java/io/github/wulkanowy/data/repositories/reportingunit/ReportingUnitRemote.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/reportingunit/ReportingUnitRemote.kt
@ -1,19 +1,19 @@
 package io.github.wulkanowy.data.repositories.reportingunit

-import io.github.wulkanowy.api.Api
 import io.github.wulkanowy.data.db.entities.ReportingUnit
+import io.github.wulkanowy.sdk.Sdk
 import io.reactivex.Single
 import javax.inject.Inject
 import javax.inject.Singleton

@Singleton
-class ReportingUnitRemote @Inject constructor(private val api: Api) {
+class ReportingUnitRemote @Inject constructor(private val sdk: Sdk) {

    fun getReportingUnits(): Single<List<ReportingUnit>> {
-        return api.getReportingUnits().map {
+        return sdk.getReportingUnits().map {
            it.map { unit ->
                ReportingUnit(
-                    studentId = api.studentId,
+                    studentId = sdk.studentId,
                    realId = unit.id,
                    roles = unit.roles,
                    senderId = unit.senderId,
--- a/Show More
+++ b/Show More