diff --git a/app/build.gradle b/app/build.gradle
index 0fcedc68e..3a90d3fb9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -242,13 +242,13 @@ dependencies {
     implementation "at.favre.lib:slf4j-timber:1.0.1"
     implementation 'com.github.bastienpaulfr:Treessence:1.1.2'
     implementation "com.mikepenz:aboutlibraries-core:$about_libraries"
-    implementation "io.coil-kt:coil:2.4.0"
+    implementation 'io.coil-kt:coil:2.5.0'
     implementation "io.github.wulkanowy:AppKillerManager:3.0.1"
     implementation 'me.xdrop:fuzzywuzzy:1.4.0'
     implementation 'com.fredporciuncula:flow-preferences:1.9.1'
-    implementation 'org.apache.commons:commons-text:1.10.0'
+    implementation 'org.apache.commons:commons-text:1.11.0'
 
-    playImplementation platform('com.google.firebase:firebase-bom:32.4.0')
+    playImplementation platform('com.google.firebase:firebase-bom:32.4.1')
     playImplementation 'com.google.firebase:firebase-analytics-ktx'
     playImplementation 'com.google.firebase:firebase-messaging:'
     playImplementation 'com.google.firebase:firebase-crashlytics:'
@@ -272,7 +272,7 @@ dependencies {
     testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$coroutines"
     testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlin_version"
 
-    testImplementation 'org.robolectric:robolectric:4.10.3'
+    testImplementation 'org.robolectric:robolectric:4.11'
     testImplementation "androidx.test:runner:1.5.2"
     testImplementation "androidx.test.ext:junit:1.1.5"
     testImplementation "androidx.test:core:1.5.0"
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration10.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration10.kt
index c26a02d1f..0e7e14097 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration10.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration10.kt
@@ -5,7 +5,7 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration10 : Migration(9, 10) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Grades_Summary RENAME TO GradesSummary")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Grades_Summary RENAME TO GradesSummary")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration11.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration11.kt
index 6d129bca0..342e2e2e3 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration11.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration11.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration11 : Migration(10, 11) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Grades_temp (
                 id INTEGER PRIMARY KEY NOT NULL,
                 is_read INTEGER NOT NULL,
@@ -26,9 +27,10 @@ class Migration11 : Migration(10, 11) {
                 date INTEGER NOT NULL,
                 teacher TEXT NOT NULL
             )
-        """)
-        database.execSQL("INSERT INTO Grades_temp SELECT * FROM Grades")
-        database.execSQL("DROP TABLE Grades")
-        database.execSQL("ALTER TABLE Grades_temp RENAME TO Grades")
+        """
+        )
+        db.execSQL("INSERT INTO Grades_temp SELECT * FROM Grades")
+        db.execSQL("DROP TABLE Grades")
+        db.execSQL("ALTER TABLE Grades_temp RENAME TO Grades")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration12.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration12.kt
index c827b82ba..6cc726953 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration12.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration12.kt
@@ -5,16 +5,17 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration12 : Migration(11, 12) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        createTempStudentsTable(database)
-        replaceStudentTable(database)
-        updateStudentsWithClassId(database, getStudentsIds(database))
-        removeStudentsWithNoClassId(database)
-        ensureThereIsOnlyOneCurrentStudent(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        createTempStudentsTable(db)
+        replaceStudentTable(db)
+        updateStudentsWithClassId(db, getStudentsIds(db))
+        removeStudentsWithNoClassId(db)
+        ensureThereIsOnlyOneCurrentStudent(db)
     }
 
-    private fun createTempStudentsTable(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    private fun createTempStudentsTable(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Students_tmp (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 endpoint TEXT NOT NULL,
@@ -30,15 +31,16 @@ class Migration12 : Migration(11, 12) {
                 registration_date INTEGER NOT NULL,
                 class_id INTEGER NOT NULL
             )
-        """)
-        database.execSQL("CREATE UNIQUE INDEX index_Students_email_symbol_student_id_school_id_class_id ON Students_tmp (email, symbol, student_id, school_id, class_id)")
+        """
+        )
+        db.execSQL("CREATE UNIQUE INDEX index_Students_email_symbol_student_id_school_id_class_id ON Students_tmp (email, symbol, student_id, school_id, class_id)")
     }
 
-    private fun replaceStudentTable(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Students ADD COLUMN class_id INTEGER DEFAULT 0 NOT NULL")
-        database.execSQL("INSERT INTO Students_tmp SELECT * FROM Students")
-        database.execSQL("DROP TABLE Students")
-        database.execSQL("ALTER TABLE Students_tmp RENAME TO Students")
+    private fun replaceStudentTable(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Students ADD COLUMN class_id INTEGER DEFAULT 0 NOT NULL")
+        db.execSQL("INSERT INTO Students_tmp SELECT * FROM Students")
+        db.execSQL("DROP TABLE Students")
+        db.execSQL("ALTER TABLE Students_tmp RENAME TO Students")
     }
 
     private fun getStudentsIds(database: SupportSQLiteDatabase): List<Int> {
@@ -54,18 +56,18 @@ class Migration12 : Migration(11, 12) {
         return students
     }
 
-    private fun updateStudentsWithClassId(database: SupportSQLiteDatabase, students: List<Int>) {
+    private fun updateStudentsWithClassId(db: SupportSQLiteDatabase, students: List<Int>) {
         students.forEach {
-            database.execSQL("UPDATE Students SET class_id = IFNULL((SELECT class_id FROM Semesters WHERE student_id = $it), 0) WHERE student_id = $it")
+            db.execSQL("UPDATE Students SET class_id = IFNULL((SELECT class_id FROM Semesters WHERE student_id = $it), 0) WHERE student_id = $it")
         }
     }
 
-    private fun removeStudentsWithNoClassId(database: SupportSQLiteDatabase) {
-        database.execSQL("DELETE FROM Students WHERE class_id = 0")
+    private fun removeStudentsWithNoClassId(db: SupportSQLiteDatabase) {
+        db.execSQL("DELETE FROM Students WHERE class_id = 0")
     }
 
-    private fun ensureThereIsOnlyOneCurrentStudent(database: SupportSQLiteDatabase) {
-        database.execSQL("UPDATE Students SET is_current = 0")
-        database.execSQL("UPDATE Students SET is_current = 1 WHERE id = (SELECT MAX(id) FROM Students)")
+    private fun ensureThereIsOnlyOneCurrentStudent(db: SupportSQLiteDatabase) {
+        db.execSQL("UPDATE Students SET is_current = 0")
+        db.execSQL("UPDATE Students SET is_current = 1 WHERE id = (SELECT MAX(id) FROM Students)")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration13.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration13.kt
index 36de1e837..c5030232b 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration13.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration13.kt
@@ -5,27 +5,30 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration13 : Migration(12, 13) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        addClassNameToStudents(database, getStudentsIds(database))
-        updateSemestersTable(database)
-        markAtLeastAndOnlyOneSemesterAtCurrent(database, getStudentsAndClassIds(database))
-        clearMessagesTable(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        addClassNameToStudents(db, getStudentsIds(db))
+        updateSemestersTable(db)
+        markAtLeastAndOnlyOneSemesterAtCurrent(db, getStudentsAndClassIds(db))
+        clearMessagesTable(db)
     }
 
-    private fun addClassNameToStudents(database: SupportSQLiteDatabase, students: List<Pair<Int, String>>) {
-        database.execSQL("ALTER TABLE Students ADD COLUMN class_name TEXT DEFAULT \"\" NOT NULL")
+    private fun addClassNameToStudents(
+        db: SupportSQLiteDatabase,
+        students: List<Pair<Int, String>>
+    ) {
+        db.execSQL("ALTER TABLE Students ADD COLUMN class_name TEXT DEFAULT \"\" NOT NULL")
 
         students.forEach { (id, name) ->
             val schoolName = name.substringAfter(" - ")
             val className = name.substringBefore(" - ", "").replace("Klasa ", "")
-            database.execSQL("UPDATE Students SET class_name = '$className' WHERE id = '$id'")
-            database.execSQL("UPDATE Students SET school_name = '$schoolName' WHERE id = '$id'")
+            db.execSQL("UPDATE Students SET class_name = '$className' WHERE id = '$id'")
+            db.execSQL("UPDATE Students SET school_name = '$schoolName' WHERE id = '$id'")
         }
     }
 
-    private fun getStudentsIds(database: SupportSQLiteDatabase): MutableList<Pair<Int, String>> {
+    private fun getStudentsIds(db: SupportSQLiteDatabase): MutableList<Pair<Int, String>> {
         val students = mutableListOf<Pair<Int, String>>()
-        database.query("SELECT id, school_name FROM Students").use {
+        db.query("SELECT id, school_name FROM Students").use {
             if (it.moveToFirst()) {
                 do {
                     students.add(it.getInt(0) to it.getString(1))
@@ -36,15 +39,15 @@ class Migration13 : Migration(12, 13) {
         return students
     }
 
-    private fun updateSemestersTable(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Semesters ADD COLUMN school_year INTEGER DEFAULT 1970 NOT NULL")
-        database.execSQL("ALTER TABLE Semesters ADD COLUMN start INTEGER DEFAULT 0 NOT NULL")
-        database.execSQL("ALTER TABLE Semesters ADD COLUMN `end` INTEGER DEFAULT 0 NOT NULL")
+    private fun updateSemestersTable(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Semesters ADD COLUMN school_year INTEGER DEFAULT 1970 NOT NULL")
+        db.execSQL("ALTER TABLE Semesters ADD COLUMN start INTEGER DEFAULT 0 NOT NULL")
+        db.execSQL("ALTER TABLE Semesters ADD COLUMN `end` INTEGER DEFAULT 0 NOT NULL")
     }
 
-    private fun getStudentsAndClassIds(database: SupportSQLiteDatabase): List<Pair<Int, Int>> {
+    private fun getStudentsAndClassIds(db: SupportSQLiteDatabase): List<Pair<Int, Int>> {
         val students = mutableListOf<Pair<Int, Int>>()
-        database.query("SELECT student_id, class_id FROM Students").use {
+        db.query("SELECT student_id, class_id FROM Students").use {
             if (it.moveToFirst()) {
                 do {
                     students.add(it.getInt(0) to it.getInt(1))
@@ -55,14 +58,17 @@ class Migration13 : Migration(12, 13) {
         return students
     }
 
-    private fun markAtLeastAndOnlyOneSemesterAtCurrent(database: SupportSQLiteDatabase, students: List<Pair<Int, Int>>) {
+    private fun markAtLeastAndOnlyOneSemesterAtCurrent(
+        db: SupportSQLiteDatabase,
+        students: List<Pair<Int, Int>>
+    ) {
         students.forEach { (studentId, classId) ->
-            database.execSQL("UPDATE Semesters SET is_current = 0 WHERE student_id = '$studentId' AND class_id = '$classId'")
-            database.execSQL("UPDATE Semesters SET is_current = 1 WHERE id = (SELECT id FROM Semesters WHERE student_id = '$studentId' AND class_id = '$classId' ORDER BY semester_id DESC)")
+            db.execSQL("UPDATE Semesters SET is_current = 0 WHERE student_id = '$studentId' AND class_id = '$classId'")
+            db.execSQL("UPDATE Semesters SET is_current = 1 WHERE id = (SELECT id FROM Semesters WHERE student_id = '$studentId' AND class_id = '$classId' ORDER BY semester_id DESC)")
         }
     }
 
-    private fun clearMessagesTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DELETE FROM Messages")
+    private fun clearMessagesTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DELETE FROM Messages")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration14.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration14.kt
index 4dac0d306..793b4a9d2 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration14.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration14.kt
@@ -5,9 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration14 : Migration(13, 14) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS GradesSummary")
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS GradesSummary")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS GradesSummary (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 semester_id INTEGER NOT NULL,
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration15.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration15.kt
index 5be49a95b..5ff44e9ca 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration15.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration15.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration15 : Migration(14, 15) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS MobileDevices (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -14,6 +15,7 @@ class Migration15 : Migration(14, 15) {
                 name TEXT NOT NULL,
                 date INTEGER NOT NULL
             )
-        """)
+        """
+        )
     }
 }
diff --git 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
index 7f40c0f8d..8a8f5b8f2 100644
--- 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
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration16 : Migration(15, 16) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Teachers (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -15,6 +16,7 @@ class Migration16 : Migration(15, 16) {
                 name TEXT NOT NULL,
                 short_name TEXT NOT NULL
             )
-        """)
+        """
+        )
     }
 }
diff --git 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
index e2a2574db..cf3318ad4 100644
--- 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
@@ -5,13 +5,14 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration17 : Migration(16, 17) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        createGradesPointsStatisticsTable(database)
-        truncateSemestersTable(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        createGradesPointsStatisticsTable(db)
+        truncateSemestersTable(db)
     }
 
-    private fun createGradesPointsStatisticsTable(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    private fun createGradesPointsStatisticsTable(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS GradesPointsStatistics(
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -20,10 +21,11 @@ class Migration17 : Migration(16, 17) {
                 others REAL NOT NULL,
                 student REAL NOT NULL
             )
-        """)
+        """
+        )
     }
 
-    private fun truncateSemestersTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DELETE FROM Semesters")
+    private fun truncateSemestersTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DELETE FROM Semesters")
     }
 }
diff --git 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
index 6c5e56c6a..713f8e724 100644
--- 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
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration18 : Migration(17, 18) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS School (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
diff --git 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
index d38f1245a..021cdbb37 100644
--- 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
@@ -6,16 +6,17 @@ 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)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        migrateMessages(db)
+        migrateGrades(db)
+        migrateStudents(db)
         migrateSharedPreferences()
     }
 
-    private fun migrateMessages(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE Messages")
-        database.execSQL("""
+    private fun migrateMessages(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE Messages")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Messages (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 is_notified INTEGER NOT NULL,
@@ -34,12 +35,14 @@ class Migration19(private val sharedPrefProvider: SharedPrefProvider) : Migratio
                 read_by INTEGER NOT NULL,
                 removed INTEGER NOT NULL
             )
-        """)
+        """
+        )
     }
 
-    private fun migrateGrades(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE Grades")
-        database.execSQL("""
+    private fun migrateGrades(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE Grades")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Grades (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 is_read INTEGER NOT NULL,
@@ -59,11 +62,13 @@ class Migration19(private val sharedPrefProvider: SharedPrefProvider) : Migratio
                 date INTEGER NOT NULL,
                 teacher TEXT NOT NULL
             )
-        """)
+        """
+        )
     }
 
-    private fun migrateStudents(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    private fun migrateStudents(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Students_tmp (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 scrapper_base_url TEXT NOT NULL,
@@ -86,26 +91,29 @@ class Migration19(private val sharedPrefProvider: SharedPrefProvider) : Migratio
                 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;")
+        db.execSQL("ALTER TABLE Students ADD COLUMN scrapperBaseUrl TEXT NOT NULL DEFAULT \"\";")
+        db.execSQL("ALTER TABLE Students ADD COLUMN apiBaseUrl TEXT NOT NULL DEFAULT \"\";")
+        db.execSQL("ALTER TABLE Students ADD COLUMN is_parent INT NOT NULL DEFAULT 0;")
+        db.execSQL("ALTER TABLE Students ADD COLUMN loginMode TEXT NOT NULL DEFAULT \"\";")
+        db.execSQL("ALTER TABLE Students ADD COLUMN certificateKey TEXT NOT NULL DEFAULT \"\";")
+        db.execSQL("ALTER TABLE Students ADD COLUMN privateKey TEXT NOT NULL DEFAULT \"\";")
+        db.execSQL("ALTER TABLE Students ADD COLUMN user_login_id INTEGER NOT NULL DEFAULT 0;")
 
-        database.execSQL("""
+        db.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)")
+        """
+        )
+        db.execSQL("DROP TABLE Students")
+        db.execSQL("ALTER TABLE Students_tmp RENAME TO Students")
+        db.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() {
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration2.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration2.kt
index c5a30991a..be8675092 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration2.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration2.kt
@@ -5,14 +5,16 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration2 : Migration(1, 2) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS LuckyNumbers (
                 id INTEGER PRIMARY KEY NOT NULL,
                 is_notified INTEGER NOT NULL,
                 student_id INTEGER NOT NULL,
                 date INTEGER NOT NULL,
                 lucky_number INTEGER NOT NULL)
-            """)
+            """
+        )
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration20.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration20.kt
index 2fcfc183d..7ad43230b 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration20.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration20.kt
@@ -5,14 +5,15 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration20 : Migration(19, 20) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        migrateTimetable(database)
-        truncateSubjects(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        migrateTimetable(db)
+        truncateSubjects(db)
     }
 
-    private fun migrateTimetable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE Timetable")
-        database.execSQL("""
+    private fun migrateTimetable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE Timetable")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS `Timetable` (
                 `id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 `student_id` INTEGER NOT NULL,
@@ -33,10 +34,11 @@ class Migration20 : Migration(19, 20) {
                 `changes` INTEGER NOT NULL,
                 `canceled` INTEGER NOT NULL
             )
-        """)
+        """
+        )
     }
 
-    private fun truncateSubjects(database: SupportSQLiteDatabase) {
-        database.execSQL("DELETE FROM Subjects")
+    private fun truncateSubjects(db: SupportSQLiteDatabase) {
+        db.execSQL("DELETE FROM Subjects")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration21.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration21.kt
index bc0ff900c..60e044cdc 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration21.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration21.kt
@@ -5,11 +5,11 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration21 : Migration(20, 21) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Attendance ADD COLUMN excusable INTEGER NOT NULL DEFAULT 0")
-        database.execSQL("ALTER TABLE Attendance ADD COLUMN time_id INTEGER NOT NULL DEFAULT 0")
-        database.execSQL("ALTER TABLE Attendance ADD COLUMN excuse_status TEXT DEFAULT NULL")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Attendance ADD COLUMN excusable INTEGER NOT NULL DEFAULT 0")
+        db.execSQL("ALTER TABLE Attendance ADD COLUMN time_id INTEGER NOT NULL DEFAULT 0")
+        db.execSQL("ALTER TABLE Attendance ADD COLUMN excuse_status TEXT DEFAULT NULL")
 
-        database.execSQL("DELETE FROM Semesters")
+        db.execSQL("DELETE FROM Semesters")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration22.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration22.kt
index cf50a6c3e..ef525a49d 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration22.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration22.kt
@@ -5,7 +5,7 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration22 : Migration(21, 22) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Students ADD COLUMN school_short TEXT NOT NULL DEFAULT ''")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Students ADD COLUMN school_short TEXT NOT NULL DEFAULT ''")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration23.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration23.kt
index 22de94c3f..3650307a6 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration23.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration23.kt
@@ -5,10 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration23 : Migration(22, 23) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Notes ADD COLUMN teacher_symbol TEXT NOT NULL DEFAULT ''")
-        database.execSQL("ALTER TABLE Notes ADD COLUMN category_type INTEGER NOT NULL DEFAULT 0")
-        database.execSQL("ALTER TABLE Notes ADD COLUMN is_points_show INTEGER NOT NULL DEFAULT 0")
-        database.execSQL("ALTER TABLE Notes ADD COLUMN points INTEGER NOT NULL DEFAULT 0")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Notes ADD COLUMN teacher_symbol TEXT NOT NULL DEFAULT ''")
+        db.execSQL("ALTER TABLE Notes ADD COLUMN category_type INTEGER NOT NULL DEFAULT 0")
+        db.execSQL("ALTER TABLE Notes ADD COLUMN is_points_show INTEGER NOT NULL DEFAULT 0")
+        db.execSQL("ALTER TABLE Notes ADD COLUMN points INTEGER NOT NULL DEFAULT 0")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration24.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration24.kt
index 604ed4875..a3cd98197 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration24.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration24.kt
@@ -5,9 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration24 : Migration(23, 24) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Messages ADD COLUMN has_attachments INTEGER NOT NULL DEFAULT 0")
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Messages ADD COLUMN has_attachments INTEGER NOT NULL DEFAULT 0")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS MessageAttachments (
                 real_id INTEGER NOT NULL,
                 message_id INTEGER NOT NULL,
@@ -16,6 +17,7 @@ class Migration24 : Migration(23, 24) {
                 filename TEXT NOT NULL,
                 PRIMARY KEY(real_id)
             )
-        """)
+        """
+        )
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration25.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration25.kt
index 4749bac73..cb395d7e0 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration25.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration25.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration25 : Migration(24, 25) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Homework ADD COLUMN is_done INTEGER NOT NULL DEFAULT 0")
-        database.execSQL("ALTER TABLE Homework ADD COLUMN attachments TEXT NOT NULL DEFAULT \"[]\"")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Homework ADD COLUMN is_done INTEGER NOT NULL DEFAULT 0")
+        db.execSQL("ALTER TABLE Homework ADD COLUMN attachments TEXT NOT NULL DEFAULT \"[]\"")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration26.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration26.kt
index 7130d86d8..94746b456 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration26.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration26.kt
@@ -5,10 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration26 : Migration(25, 26) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE GradesSummary ADD COLUMN is_predicted_grade_notified INTEGER NOT NULL DEFAULT 1")
-        database.execSQL("ALTER TABLE GradesSummary ADD COLUMN is_final_grade_notified INTEGER NOT NULL DEFAULT 1")
-        database.execSQL("ALTER TABLE GradesSummary ADD COLUMN predicted_grade_last_change INTEGER NOT NULL DEFAULT 0")
-        database.execSQL("ALTER TABLE GradesSummary ADD COLUMN final_grade_last_change INTEGER NOT NULL DEFAULT 0")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE GradesSummary ADD COLUMN is_predicted_grade_notified INTEGER NOT NULL DEFAULT 1")
+        db.execSQL("ALTER TABLE GradesSummary ADD COLUMN is_final_grade_notified INTEGER NOT NULL DEFAULT 1")
+        db.execSQL("ALTER TABLE GradesSummary ADD COLUMN predicted_grade_last_change INTEGER NOT NULL DEFAULT 0")
+        db.execSQL("ALTER TABLE GradesSummary ADD COLUMN final_grade_last_change INTEGER NOT NULL DEFAULT 0")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration27.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration27.kt
index 5c60beead..a7ba763df 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration27.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration27.kt
@@ -5,24 +5,25 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration27 : Migration(26, 27) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Students ADD COLUMN user_name TEXT NOT NULL DEFAULT \"\"")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Students ADD COLUMN user_name TEXT NOT NULL DEFAULT \"\"")
 
-        val students = getStudentsIdsAndNames(database)
-        val units = getReportingUnits(database)
+        val students = getStudentsIdsAndNames(db)
+        val units = getReportingUnits(db)
 
         students.forEach { (id, userLoginId, studentName) ->
-            val userNameFromUnits = units.singleOrNull { (senderId, _) -> senderId == userLoginId }?.second
+            val userNameFromUnits =
+                units.singleOrNull { (senderId, _) -> senderId == userLoginId }?.second
             val normalizedStudentName = studentName.split(" ").asReversed().joinToString(" ")
 
             val userName = userNameFromUnits ?: normalizedStudentName
-            database.execSQL("UPDATE Students SET user_name = '$userName' WHERE id = '$id'")
+            db.execSQL("UPDATE Students SET user_name = '$userName' WHERE id = '$id'")
         }
     }
 
-    private fun getStudentsIdsAndNames(database: SupportSQLiteDatabase): MutableList<Triple<Long, Int, String>> {
+    private fun getStudentsIdsAndNames(db: SupportSQLiteDatabase): MutableList<Triple<Long, Int, String>> {
         val students = mutableListOf<Triple<Long, Int, String>>()
-        database.query("SELECT id, user_login_id, student_name FROM Students").use {
+        db.query("SELECT id, user_login_id, student_name FROM Students").use {
             if (it.moveToFirst()) {
                 do {
                     students.add(Triple(it.getLong(0), it.getInt(1), it.getString(2)))
@@ -33,9 +34,9 @@ class Migration27 : Migration(26, 27) {
         return students
     }
 
-    private fun getReportingUnits(database: SupportSQLiteDatabase): MutableList<Pair<Int, String>> {
+    private fun getReportingUnits(db: SupportSQLiteDatabase): MutableList<Pair<Int, String>> {
         val units = mutableListOf<Pair<Int, String>>()
-        database.query("SELECT sender_id, sender_name FROM ReportingUnits").use {
+        db.query("SELECT sender_id, sender_name FROM ReportingUnits").use {
             if (it.moveToFirst()) {
                 do {
                     units.add(it.getInt(0) to it.getString(1))
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration28.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration28.kt
index 51e7628b5..e8a5a4a86 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration28.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration28.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration28 : Migration(27, 28) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Conferences (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration29.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration29.kt
index 327552d75..dac303d27 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration29.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration29.kt
@@ -5,9 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration29 : Migration(28, 29) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS GradesStatistics")
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS GradesStatistics")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS GradeSemesterStatistics (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -16,8 +17,10 @@ class Migration29 : Migration(28, 29) {
                 amounts TEXT NOT NULL,
                 student_grade INTEGER NOT NULL
             )
-        """)
-        database.execSQL("""
+        """
+        )
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS GradePartialStatistics (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration3.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration3.kt
index d9699c0f4..44d421648 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration3.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration3.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration3 : Migration(2, 3) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS CompletedLesson (
                 id INTEGER PRIMARY KEY NOT NULL,
                 student_id INTEGER NOT NULL,
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration30.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration30.kt
index b33914fec..3fea8ec0e 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration30.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration30.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration30 : Migration(29, 30) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE TimetableAdditional (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -16,6 +17,7 @@ class Migration30 : Migration(29, 30) {
                 date INTEGER NOT NULL,
                 subject TEXT NOT NULL
             )
-        """)
+        """
+        )
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration31.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration31.kt
index 064a3e5bc..28fb10562 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration31.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration31.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration31 : Migration(30, 31) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL(
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
             """CREATE TABLE IF NOT EXISTS StudentInfo (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, 
                 student_id INTEGER NOT NULL, 
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration32.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration32.kt
index 508485e08..347873936 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration32.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration32.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration32 : Migration(31, 32) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Students ADD COLUMN nick TEXT NOT NULL DEFAULT \"\"")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Students ADD COLUMN nick TEXT NOT NULL DEFAULT \"\"")
     }
 }
 
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration33.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration33.kt
index 4a57880d4..9778d2790 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration33.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration33.kt
@@ -5,10 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration33 : Migration(32, 33) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS StudentInfo")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS StudentInfo")
 
-        database.execSQL(
+        db.execSQL(
             """CREATE TABLE IF NOT EXISTS StudentInfo (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, 
                 student_id INTEGER NOT NULL, 
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration34.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration34.kt
index 2c57eb00a..e9eec58cd 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration34.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration34.kt
@@ -5,9 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration34 : Migration(33, 34) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DELETE FROM ReportingUnits")
-        database.execSQL("DELETE FROM Recipients")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DELETE FROM ReportingUnits")
+        db.execSQL("DELETE FROM Recipients")
     }
 }
 
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration35.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration35.kt
index f63431d00..b238ce8b4 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration35.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration35.kt
@@ -7,13 +7,13 @@ import io.github.wulkanowy.utils.AppInfo
 
 class Migration35(private val appInfo: AppInfo) : Migration(34, 35) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Students ADD COLUMN `avatar_color` INTEGER NOT NULL DEFAULT 0")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Students ADD COLUMN `avatar_color` INTEGER NOT NULL DEFAULT 0")
 
-        database.query("SELECT * FROM Students").use {
+        db.query("SELECT * FROM Students").use {
             while (it.moveToNext()) {
                 val studentId = it.getLongOrNull(0)
-                database.execSQL(
+                db.execSQL(
                     """
                         UPDATE Students
                         SET avatar_color = ${appInfo.defaultColorsForAvatar.random()}
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration36.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration36.kt
index 7ea106585..62ce346cd 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration36.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration36.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration36 : Migration(35, 36) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Exams ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
-        database.execSQL("ALTER TABLE Homework ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Exams ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+        db.execSQL("ALTER TABLE Homework ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration37.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration37.kt
index a3fcd51a6..9ab35514f 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration37.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration37.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration37 : Migration(36, 37) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL(
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS TimetableHeaders (
                 id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration38.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration38.kt
index 1f90f5a44..bb9b32bfa 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration38.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration38.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration38 : Migration(37, 38) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS `SchoolAnnouncements` (
                 `id` INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
                 `student_id` INTEGER NOT NULL,
@@ -14,6 +15,7 @@ class Migration38 : Migration(37, 38) {
                 `subject` TEXT NOT NULL,
                 `content` TEXT NOT NULL
             )
-        """)
+        """
+        )
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration39.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration39.kt
index 6c0d36dd2..2e5315bf4 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration39.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration39.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration39 : Migration(38, 39) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Conferences ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
-        database.execSQL("ALTER TABLE SchoolAnnouncements ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Conferences ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+        db.execSQL("ALTER TABLE SchoolAnnouncements ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration4.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration4.kt
index 0ae89bdd6..b6089aa62 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration4.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration4.kt
@@ -5,9 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration4 : Migration(3, 4) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS Messages")
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS Messages")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Messages (
                 id INTEGER PRIMARY KEY NOT NULL,
                 is_notified INTEGER NOT NULL,
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration40.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration40.kt
index 6d2795c7c..8e38b0c84 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration40.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration40.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration40 : Migration(39, 40) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL(
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS `Notifications` (
                 `student_id` INTEGER NOT NULL, 
@@ -20,4 +20,4 @@ class Migration40 : Migration(39, 40) {
             """
         )
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration41.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration41.kt
index ccaf85755..bfc28334b 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration41.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration41.kt
@@ -7,9 +7,9 @@ import io.github.wulkanowy.data.enums.GradeExpandMode
 
 class Migration41(private val sharedPrefProvider: SharedPrefProvider) : Migration(40, 41) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
+    override fun migrate(db: SupportSQLiteDatabase) {
         migrateSharedPreferences()
-        database.execSQL("ALTER TABLE Homework ADD COLUMN is_added_by_user INTEGER NOT NULL DEFAULT 0")
+        db.execSQL("ALTER TABLE Homework ADD COLUMN is_added_by_user INTEGER NOT NULL DEFAULT 0")
     }
 
     private fun migrateSharedPreferences() {
@@ -18,4 +18,4 @@ class Migration41(private val sharedPrefProvider: SharedPrefProvider) : Migratio
         }
         sharedPrefProvider.delete("pref_key_expand_grade")
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration42.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration42.kt
index 3d66f301b..14356e279 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration42.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration42.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration42 : Migration(41, 42) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL(
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
             """CREATE TABLE IF NOT EXISTS `AdminMessages` (
             `id` INTEGER NOT NULL, 
             `title` TEXT NOT NULL, 
@@ -21,4 +21,4 @@ class Migration42 : Migration(41, 42) {
             PRIMARY KEY(`id`))"""
         )
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration43.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration43.kt
index 68c2834d6..ef8108166 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration43.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration43.kt
@@ -5,8 +5,8 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration43 : Migration(42, 43) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Timetable ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
-        database.execSQL("ALTER TABLE Attendance ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Timetable ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
+        db.execSQL("ALTER TABLE Attendance ADD COLUMN is_notified INTEGER NOT NULL DEFAULT 1")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration44.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration44.kt
index 7bdcab5f4..0a4e5f962 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration44.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration44.kt
@@ -5,7 +5,7 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration44 : Migration(43, 44) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE AdminMessages ADD COLUMN is_dismissible INTEGER NOT NULL DEFAULT 0")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE AdminMessages ADD COLUMN is_dismissible INTEGER NOT NULL DEFAULT 0")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration46.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration46.kt
index d3fa5cf93..0bacbaa0e 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration46.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration46.kt
@@ -8,65 +8,65 @@ import java.time.ZoneOffset
 
 class Migration46 : Migration(45, 46) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        migrateConferences(database)
-        migrateMessages(database)
-        migrateMobileDevices(database)
-        migrateNotifications(database)
-        migrateTimetable(database)
-        migrateTimetableAdditional(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        migrateConferences(db)
+        migrateMessages(db)
+        migrateMobileDevices(db)
+        migrateNotifications(db)
+        migrateTimetable(db)
+        migrateTimetableAdditional(db)
     }
 
-    private fun migrateConferences(database: SupportSQLiteDatabase) {
-        database.query("SELECT * FROM Conferences").use {
+    private fun migrateConferences(db: SupportSQLiteDatabase) {
+        db.query("SELECT * FROM Conferences").use {
             while (it.moveToNext()) {
                 val id = it.getLong(it.getColumnIndexOrThrow("id"))
                 val timestampLocal = it.getLong(it.getColumnIndexOrThrow("date"))
                 val timestampUtc = timestampLocal.timestampLocalToUTC()
 
-                database.execSQL("UPDATE Conferences SET date = $timestampUtc WHERE id = $id")
+                db.execSQL("UPDATE Conferences SET date = $timestampUtc WHERE id = $id")
             }
         }
     }
 
-    private fun migrateMessages(database: SupportSQLiteDatabase) {
-        database.query("SELECT * FROM Messages").use {
+    private fun migrateMessages(db: SupportSQLiteDatabase) {
+        db.query("SELECT * FROM Messages").use {
             while (it.moveToNext()) {
                 val id = it.getLong(it.getColumnIndexOrThrow("id"))
                 val timestampLocal = it.getLong(it.getColumnIndexOrThrow("date"))
                 val timestampUtc = timestampLocal.timestampLocalToUTC()
 
-                database.execSQL("UPDATE Messages SET date = $timestampUtc WHERE id = $id")
+                db.execSQL("UPDATE Messages SET date = $timestampUtc WHERE id = $id")
             }
         }
     }
 
-    private fun migrateMobileDevices(database: SupportSQLiteDatabase) {
-        database.query("SELECT * FROM MobileDevices").use {
+    private fun migrateMobileDevices(db: SupportSQLiteDatabase) {
+        db.query("SELECT * FROM MobileDevices").use {
             while (it.moveToNext()) {
                 val id = it.getLong(it.getColumnIndexOrThrow("id"))
                 val timestampLocal = it.getLong(it.getColumnIndexOrThrow("date"))
                 val timestampUtc = timestampLocal.timestampLocalToUTC()
 
-                database.execSQL("UPDATE MobileDevices SET date = $timestampUtc WHERE id = $id")
+                db.execSQL("UPDATE MobileDevices SET date = $timestampUtc WHERE id = $id")
             }
         }
     }
 
-    private fun migrateNotifications(database: SupportSQLiteDatabase) {
-        database.query("SELECT * FROM Notifications").use {
+    private fun migrateNotifications(db: SupportSQLiteDatabase) {
+        db.query("SELECT * FROM Notifications").use {
             while (it.moveToNext()) {
                 val id = it.getLong(it.getColumnIndexOrThrow("id"))
                 val timestampLocal = it.getLong(it.getColumnIndexOrThrow("date"))
                 val timestampUtc = timestampLocal.timestampLocalToUTC()
 
-                database.execSQL("UPDATE Notifications SET date = $timestampUtc WHERE id = $id")
+                db.execSQL("UPDATE Notifications SET date = $timestampUtc WHERE id = $id")
             }
         }
     }
 
-    private fun migrateTimetable(database: SupportSQLiteDatabase) {
-        database.query("SELECT * FROM Timetable").use {
+    private fun migrateTimetable(db: SupportSQLiteDatabase) {
+        db.query("SELECT * FROM Timetable").use {
             while (it.moveToNext()) {
                 val id = it.getLong(it.getColumnIndexOrThrow("id"))
                 val timestampLocalStart = it.getLong(it.getColumnIndexOrThrow("start"))
@@ -74,13 +74,13 @@ class Migration46 : Migration(45, 46) {
                 val timestampUtcStart = timestampLocalStart.timestampLocalToUTC()
                 val timestampUtcEnd = timestampLocalEnd.timestampLocalToUTC()
 
-                database.execSQL("UPDATE Timetable SET start = $timestampUtcStart, end = $timestampUtcEnd WHERE id = $id")
+                db.execSQL("UPDATE Timetable SET start = $timestampUtcStart, end = $timestampUtcEnd WHERE id = $id")
             }
         }
     }
 
-    private fun migrateTimetableAdditional(database: SupportSQLiteDatabase) {
-        database.query("SELECT * FROM TimetableAdditional").use {
+    private fun migrateTimetableAdditional(db: SupportSQLiteDatabase) {
+        db.query("SELECT * FROM TimetableAdditional").use {
             while (it.moveToNext()) {
                 val id = it.getLong(it.getColumnIndexOrThrow("id"))
                 val timestampLocalStart = it.getLong(it.getColumnIndexOrThrow("start"))
@@ -88,7 +88,7 @@ class Migration46 : Migration(45, 46) {
                 val timestampUtcStart = timestampLocalStart.timestampLocalToUTC()
                 val timestampUtcEnd = timestampLocalEnd.timestampLocalToUTC()
 
-                database.execSQL("UPDATE TimetableAdditional SET start = $timestampUtcStart, end = $timestampUtcEnd WHERE id = $id")
+                db.execSQL("UPDATE TimetableAdditional SET start = $timestampUtcStart, end = $timestampUtcEnd WHERE id = $id")
             }
         }
     }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration49.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration49.kt
index 6e1de19d4..97766c01e 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration49.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration49.kt
@@ -5,10 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration49 : Migration(48, 49) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS SchoolAnnouncements")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS SchoolAnnouncements")
 
-        database.execSQL(
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS `SchoolAnnouncements` (
             `user_login_id` INTEGER NOT NULL, 
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration5.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration5.kt
index dbcd916ba..a5b4e8e1a 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration5.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration5.kt
@@ -7,11 +7,16 @@ import java.time.ZoneOffset
 
 class Migration5 : Migration(4, 5) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Students ADD COLUMN registration_date INTEGER DEFAULT 0 NOT NULL")
-        database.execSQL("UPDATE Students SET registration_date = '${now().atZone(ZoneOffset.UTC).toInstant().toEpochMilli()}'")
-        database.execSQL("DROP TABLE IF EXISTS Notes")
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Students ADD COLUMN registration_date INTEGER DEFAULT 0 NOT NULL")
+        db.execSQL(
+            "UPDATE Students SET registration_date = '${
+                now().atZone(ZoneOffset.UTC).toInstant().toEpochMilli()
+            }'"
+        )
+        db.execSQL("DROP TABLE IF EXISTS Notes")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Notes (
                 id INTEGER PRIMARY KEY NOT NULL,
                 is_read INTEGER NOT NULL,
@@ -21,6 +26,7 @@ class Migration5 : Migration(4, 5) {
                 teacher TEXT NOT NULL,
                 category TEXT NOT NULL,
                 content TEXT NOT NULL)
-            """)
+            """
+        )
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration50.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration50.kt
index d45a81570..577998ca0 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration50.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration50.kt
@@ -5,9 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration50 : Migration(49, 50) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS MobileDevices")
-        database.execSQL(
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS MobileDevices")
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS `MobileDevices` (
             `user_login_id` INTEGER NOT NULL, 
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration51.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration51.kt
index e78e2e3a7..7023049f9 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration51.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration51.kt
@@ -5,17 +5,17 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration51 : Migration(50, 51) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        createMailboxTable(database)
-        recreateMessagesTable(database)
-        recreateMessageAttachmentsTable(database)
-        recreateRecipientsTable(database)
-        deleteReportingUnitTable(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        createMailboxTable(db)
+        recreateMessagesTable(db)
+        recreateMessageAttachmentsTable(db)
+        recreateRecipientsTable(db)
+        deleteReportingUnitTable(db)
     }
 
-    private fun createMailboxTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS Mailboxes")
-        database.execSQL(
+    private fun createMailboxTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS Mailboxes")
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS `Mailboxes` (
                 `globalKey` TEXT NOT NULL,
@@ -30,9 +30,9 @@ class Migration51 : Migration(50, 51) {
         )
     }
 
-    private fun recreateMessagesTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS Messages")
-        database.execSQL(
+    private fun recreateMessagesTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS Messages")
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS `Messages` (
                 `message_global_key` TEXT NOT NULL,
@@ -52,9 +52,9 @@ class Migration51 : Migration(50, 51) {
         )
     }
 
-    private fun recreateMessageAttachmentsTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS MessageAttachments")
-        database.execSQL(
+    private fun recreateMessageAttachmentsTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS MessageAttachments")
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS `MessageAttachments` (
                 `real_id` INTEGER NOT NULL,
@@ -66,9 +66,9 @@ class Migration51 : Migration(50, 51) {
         )
     }
 
-    private fun recreateRecipientsTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS Recipients")
-        database.execSQL(
+    private fun recreateRecipientsTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS Recipients")
+        db.execSQL(
             """
             CREATE TABLE IF NOT EXISTS `Recipients` (
                 `mailboxGlobalKey` TEXT NOT NULL,
@@ -82,7 +82,7 @@ class Migration51 : Migration(50, 51) {
         )
     }
 
-    private fun deleteReportingUnitTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS ReportingUnits")
+    private fun deleteReportingUnitTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS ReportingUnits")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration53.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration53.kt
index 12624a51a..dd9e68c97 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration53.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration53.kt
@@ -5,14 +5,14 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration53 : Migration(52, 53) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        createMailboxTable(database)
-        recreateMessagesTable(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        createMailboxTable(db)
+        recreateMessagesTable(db)
     }
 
-    private fun createMailboxTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS Mailboxes")
-        database.execSQL(
+    private fun createMailboxTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS Mailboxes")
+        db.execSQL(
             """
                 CREATE TABLE IF NOT EXISTS `Mailboxes` (
                     `globalKey` TEXT NOT NULL,
@@ -29,9 +29,9 @@ class Migration53 : Migration(52, 53) {
         )
     }
 
-    private fun recreateMessagesTable(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS Messages")
-        database.execSQL(
+    private fun recreateMessagesTable(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS Messages")
+        db.execSQL(
             """
                 CREATE TABLE IF NOT EXISTS `Messages` (
                     `email` TEXT NOT NULL,
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration54.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration54.kt
index 678bd32f2..60bd21f0a 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration54.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration54.kt
@@ -5,22 +5,24 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration54 : Migration(53, 54) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        migrateResman(database)
-        removeTomaszowMazowieckiStudents(database)
+    override fun migrate(db: SupportSQLiteDatabase) {
+        migrateResman(db)
+        removeTomaszowMazowieckiStudents(db)
     }
 
-    private fun migrateResman(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    private fun migrateResman(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             UPDATE Students SET
                 scrapper_base_url = 'https://vulcan.net.pl',
                 login_type = 'ADFSLightScoped',
                 symbol = 'rzeszowprojekt'
             WHERE scrapper_base_url = 'https://resman.pl'
-        """.trimIndent())
+        """.trimIndent()
+        )
     }
 
-    private fun removeTomaszowMazowieckiStudents(database: SupportSQLiteDatabase) {
-        database.execSQL("DELETE FROM Students WHERE symbol = 'tomaszowmazowiecki'")
+    private fun removeTomaszowMazowieckiStudents(db: SupportSQLiteDatabase) {
+        db.execSQL("DELETE FROM Students WHERE symbol = 'tomaszowmazowiecki'")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration6.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration6.kt
index fa9436187..06cd5f0fd 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration6.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration6.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration6 : Migration(5, 6) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS ReportingUnits (
                 id INTEGER PRIMARY KEY NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -15,9 +16,11 @@ class Migration6 : Migration(5, 6) {
                 sender_id INTEGER NOT NULL,
                 sender_name TEXT NOT NULL,
                 roles TEXT NOT NULL)
-                """)
+                """
+        )
 
-        database.execSQL("""
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Recipients (
                 id INTEGER PRIMARY KEY NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -28,10 +31,11 @@ class Migration6 : Migration(5, 6) {
                 unit_id INTEGER NOT NULL,
                 role INTEGER NOT NULL,
                 hash TEXT NOT NULL)
-                """)
+                """
+        )
 
-        database.execSQL("DELETE FROM Semesters WHERE 1")
-        database.execSQL("ALTER TABLE Semesters ADD COLUMN class_id INTEGER DEFAULT 0 NOT NULL")
-        database.execSQL("ALTER TABLE Semesters ADD COLUMN unit_id INTEGER DEFAULT 0 NOT NULL")
+        db.execSQL("DELETE FROM Semesters WHERE 1")
+        db.execSQL("ALTER TABLE Semesters ADD COLUMN class_id INTEGER DEFAULT 0 NOT NULL")
+        db.execSQL("ALTER TABLE Semesters ADD COLUMN unit_id INTEGER DEFAULT 0 NOT NULL")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration7.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration7.kt
index 120716c81..83a822f22 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration7.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration7.kt
@@ -5,8 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration7 : Migration(6, 7) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS GradesStatistics (
                 id INTEGER PRIMARY KEY NOT NULL,
                 student_id INTEGER NOT NULL,
@@ -15,6 +16,7 @@ class Migration7 : Migration(6, 7) {
                 grade INTEGER NOT NULL,
                 amount INTEGER NOT NULL,
                 is_semester INTEGER NOT NULL)
-            """)
+            """
+        )
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration8.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration8.kt
index 7009ee129..992e8c68d 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration8.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration8.kt
@@ -5,9 +5,9 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration8 : Migration(7, 8) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("ALTER TABLE Timetable ADD COLUMN subjectOld TEXT DEFAULT \"\" NOT NULL")
-        database.execSQL("ALTER TABLE Timetable ADD COLUMN roomOld TEXT DEFAULT \"\" NOT NULL")
-        database.execSQL("ALTER TABLE Timetable ADD COLUMN teacherOld TEXT DEFAULT \"\" NOT NULL")
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("ALTER TABLE Timetable ADD COLUMN subjectOld TEXT DEFAULT \"\" NOT NULL")
+        db.execSQL("ALTER TABLE Timetable ADD COLUMN roomOld TEXT DEFAULT \"\" NOT NULL")
+        db.execSQL("ALTER TABLE Timetable ADD COLUMN teacherOld TEXT DEFAULT \"\" NOT NULL")
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration9.kt b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration9.kt
index d79a57062..b83c34c41 100644
--- a/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration9.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration9.kt
@@ -5,9 +5,10 @@ import androidx.sqlite.db.SupportSQLiteDatabase
 
 class Migration9 : Migration(8, 9) {
 
-    override fun migrate(database: SupportSQLiteDatabase) {
-        database.execSQL("DROP TABLE IF EXISTS Messages")
-        database.execSQL("""
+    override fun migrate(db: SupportSQLiteDatabase) {
+        db.execSQL("DROP TABLE IF EXISTS Messages")
+        db.execSQL(
+            """
             CREATE TABLE IF NOT EXISTS Messages (
                 id INTEGER PRIMARY KEY NOT NULL,
                 student_id INTEGER NOT NULL,
diff --git a/build.gradle b/build.gradle
index 3fafd2d24..e2b82e9a3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -36,7 +36,3 @@ allprojects {
         maven { url "https://developer.huawei.com/repo/" }
     }
 }
-
-tasks.register('clean', Delete) {
-    delete rootProject.buildDir
-}