diff --git a/app/src/main/java/io/github/wulkanowy/data/DataModule.kt b/app/src/main/java/io/github/wulkanowy/data/DataModule.kt
index 50d6c8f9f..a492c08db 100644
--- a/app/src/main/java/io/github/wulkanowy/data/DataModule.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/DataModule.kt
@@ -18,17 +18,13 @@ import io.github.wulkanowy.data.api.SchoolsService
 import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.repositories.PreferencesRepository
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AppInfo
-import io.github.wulkanowy.utils.RemoteConfigHelper
-import io.github.wulkanowy.utils.WebkitCookieManagerProxy
 import kotlinx.serialization.json.Json
 import okhttp3.MediaType.Companion.toMediaType
 import okhttp3.OkHttpClient
 import okhttp3.logging.HttpLoggingInterceptor
 import retrofit2.Retrofit
 import retrofit2.create
-import timber.log.Timber
 import java.util.concurrent.TimeUnit
 import javax.inject.Singleton
 
@@ -36,23 +32,6 @@ import javax.inject.Singleton
 @InstallIn(SingletonComponent::class)
 internal class DataModule {
 
-    @Singleton
-    @Provides
-    fun provideSdk(
-        chuckerInterceptor: ChuckerInterceptor,
-        remoteConfig: RemoteConfigHelper,
-        webkitCookieManagerProxy: WebkitCookieManagerProxy,
-    ) = Sdk().apply {
-        androidVersion = android.os.Build.VERSION.RELEASE
-        buildTag = android.os.Build.MODEL
-        userAgentTemplate = remoteConfig.userAgentTemplate
-        setSimpleHttpLogger { Timber.d(it) }
-        setAdditionalCookieManager(webkitCookieManagerProxy)
-
-        // for debug only
-        addInterceptor(chuckerInterceptor, network = true)
-    }
-
     @Singleton
     @Provides
     fun provideChuckerCollector(
diff --git a/app/src/main/java/io/github/wulkanowy/data/WulkanowySdkFactory.kt b/app/src/main/java/io/github/wulkanowy/data/WulkanowySdkFactory.kt
new file mode 100644
index 000000000..6d4f9edad
--- /dev/null
+++ b/app/src/main/java/io/github/wulkanowy/data/WulkanowySdkFactory.kt
@@ -0,0 +1,64 @@
+package io.github.wulkanowy.data
+
+import com.chuckerteam.chucker.api.ChuckerInterceptor
+import io.github.wulkanowy.data.db.entities.Semester
+import io.github.wulkanowy.data.db.entities.Student
+import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.utils.RemoteConfigHelper
+import io.github.wulkanowy.utils.WebkitCookieManagerProxy
+import timber.log.Timber
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Singleton
+class WulkanowySdkFactory @Inject constructor(
+    private val chuckerInterceptor: ChuckerInterceptor,
+    private val remoteConfig: RemoteConfigHelper,
+    private val webkitCookieManagerProxy: WebkitCookieManagerProxy
+) {
+
+    private val sdk = Sdk().apply {
+        androidVersion = android.os.Build.VERSION.RELEASE
+        buildTag = android.os.Build.MODEL
+        userAgentTemplate = remoteConfig.userAgentTemplate
+        setSimpleHttpLogger { Timber.d(it) }
+        setAdditionalCookieManager(webkitCookieManagerProxy)
+
+        // for debug only
+        addInterceptor(chuckerInterceptor, network = true)
+    }
+
+    fun create() = sdk
+
+    fun create(student: Student, semester: Semester? = null): Sdk {
+        return create().apply {
+            email = student.email
+            password = student.password
+            symbol = student.symbol
+            schoolSymbol = student.schoolSymbol
+            studentId = student.studentId
+            classId = student.classId
+            emptyCookieJarInterceptor = true
+
+            if (Sdk.Mode.valueOf(student.loginMode) == Sdk.Mode.HEBE) {
+                mobileBaseUrl = student.mobileBaseUrl
+            } else {
+                scrapperBaseUrl = student.scrapperBaseUrl
+                domainSuffix = student.scrapperDomainSuffix
+                loginType = Sdk.ScrapperLoginType.valueOf(student.loginType)
+            }
+
+            mode = Sdk.Mode.valueOf(student.loginMode)
+            mobileBaseUrl = student.mobileBaseUrl
+            keyId = student.certificateKey
+            privatePem = student.privateKey
+
+            if (semester != null) {
+                diaryId = semester.diaryId
+                kindergartenDiaryId = semester.kindergartenDiaryId
+                schoolYear = semester.schoolYear
+                unitId = semester.unitId
+            }
+        }
+    }
+}
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceRepository.kt
index 46ea29f83..9b94cc103 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceRepository.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.AttendanceDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
 import io.github.wulkanowy.data.db.entities.Attendance
@@ -7,14 +8,11 @@ import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.sdk.pojo.Absent
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.sunday
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -28,7 +26,7 @@ import javax.inject.Singleton
 class AttendanceRepository @Inject constructor(
     private val attendanceDb: AttendanceDao,
     private val timetableDb: TimetableDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -59,8 +57,7 @@ class AttendanceRepository @Inject constructor(
             val lessons = timetableDb.load(
                 semester.diaryId, semester.studentId, start.monday, end.sunday
             )
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getAttendance(start.monday, end.sunday)
                 .mapToEntities(semester, lessons)
         },
@@ -90,8 +87,10 @@ class AttendanceRepository @Inject constructor(
     }
 
     suspend fun excuseForAbsence(
-        student: Student, semester: Semester,
-        absenceList: List<Attendance>, reason: String? = null
+        student: Student,
+        semester: Semester,
+        absenceList: List<Attendance>,
+        reason: String? = null
     ) {
         val items = absenceList.map { attendance ->
             Absent(
@@ -99,8 +98,7 @@ class AttendanceRepository @Inject constructor(
                 timeId = attendance.timeId
             )
         }
-        sdk.init(student)
-            .switchSemester(semester)
+        wulkanowySdkFactory.create(student, semester)
             .excuseForAbsence(items, reason)
     }
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceSummaryRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceSummaryRepository.kt
index 1129598ac..78c98169b 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceSummaryRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/AttendanceSummaryRepository.kt
@@ -1,17 +1,15 @@
 package io.github.wulkanowy.data.repositories
 
 import androidx.room.withTransaction
-import io.github.wulkanowy.data.*
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.dao.AttendanceSummaryDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
-import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.data.networkBoundResource
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -20,9 +18,9 @@ import javax.inject.Singleton
 @Singleton
 class AttendanceSummaryRepository @Inject constructor(
     private val attendanceDb: AttendanceSummaryDao,
-    private val sdk: Sdk,
     private val refreshHelper: AutoRefreshHelper,
     private val appDatabase: AppDatabase,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     private val saveFetchResultMutex = Mutex()
@@ -43,8 +41,7 @@ class AttendanceSummaryRepository @Inject constructor(
         },
         query = { attendanceDb.loadAll(semester.diaryId, semester.studentId, subjectId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getAttendanceSummary(subjectId)
                 .mapToEntities(semester, subjectId)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepository.kt
index f7f86b23d..45a36f55c 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepository.kt
@@ -1,17 +1,15 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.CompletedLessonsDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.sunday
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import java.time.LocalDate
@@ -21,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class CompletedLessonsRepository @Inject constructor(
     private val completedLessonsDb: CompletedLessonsDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -53,8 +51,7 @@ class CompletedLessonsRepository @Inject constructor(
             )
         },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getCompletedLessons(start.monday, end.sunday)
                 .mapToEntities(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/ConferenceRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/ConferenceRepository.kt
index fbe578604..58ce0091a 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/ConferenceRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/ConferenceRepository.kt
@@ -1,16 +1,14 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.ConferenceDao
 import io.github.wulkanowy.data.db.entities.Conference
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -21,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class ConferenceRepository @Inject constructor(
     private val conferenceDb: ConferenceDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -46,8 +44,7 @@ class ConferenceRepository @Inject constructor(
             conferenceDb.loadAll(semester.diaryId, student.studentId, startDate)
         },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getConferences()
                 .mapToEntities(semester)
                 .filter { it.date >= startDate }
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/ExamRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/ExamRepository.kt
index 9b8dd02e3..89dbcd5ce 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/ExamRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/ExamRepository.kt
@@ -1,18 +1,16 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.ExamDao
 import io.github.wulkanowy.data.db.entities.Exam
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.endExamsDay
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.startExamsDay
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -23,7 +21,7 @@ import javax.inject.Singleton
 @Singleton
 class ExamRepository @Inject constructor(
     private val examDb: ExamDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -56,8 +54,7 @@ class ExamRepository @Inject constructor(
             )
         },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getExams(start.startExamsDay, start.endExamsDay)
                 .mapToEntities(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/GradeRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/GradeRepository.kt
index ac1ef541b..e899f900d 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/GradeRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/GradeRepository.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.GradeDao
 import io.github.wulkanowy.data.db.dao.GradeDescriptiveDao
 import io.github.wulkanowy.data.db.dao.GradeSummaryDao
@@ -10,11 +11,8 @@ import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.toLocalDate
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
@@ -30,7 +28,7 @@ class GradeRepository @Inject constructor(
     private val gradeDb: GradeDao,
     private val gradeSummaryDb: GradeSummaryDao,
     private val gradeDescriptiveDb: GradeDescriptiveDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -63,8 +61,7 @@ class GradeRepository @Inject constructor(
             }
         },
         fetch = {
-            val (details, summary, descriptive) = sdk.init(student)
-                .switchSemester(semester)
+            val (details, summary, descriptive) = wulkanowySdkFactory.create(student, semester)
                 .getGrades(semester.semesterId)
 
             Triple(
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepository.kt
index 809f92d3e..f120d34f3 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepository.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.GradePartialStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradePointsStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradeSemesterStatisticsDao
@@ -12,11 +13,8 @@ import io.github.wulkanowy.data.mappers.mapPointsToStatisticsItems
 import io.github.wulkanowy.data.mappers.mapSemesterToStatisticItems
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import java.util.Locale
@@ -28,7 +26,7 @@ class GradeStatisticsRepository @Inject constructor(
     private val gradePartialStatisticsDb: GradePartialStatisticsDao,
     private val gradePointsStatisticsDb: GradePointsStatisticsDao,
     private val gradeSemesterStatisticsDb: GradeSemesterStatisticsDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -56,8 +54,7 @@ class GradeStatisticsRepository @Inject constructor(
         },
         query = { gradePartialStatisticsDb.loadAll(semester.semesterId, semester.studentId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getGradesPartialStatistics(semester.semesterId)
                 .mapToEntities(semester)
         },
@@ -104,8 +101,7 @@ class GradeStatisticsRepository @Inject constructor(
         },
         query = { gradeSemesterStatisticsDb.loadAll(semester.semesterId, semester.studentId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getGradesSemesterStatistics(semester.semesterId)
                 .mapToEntities(semester)
         },
@@ -163,8 +159,7 @@ class GradeStatisticsRepository @Inject constructor(
         },
         query = { gradePointsStatisticsDb.loadAll(semester.semesterId, semester.studentId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getGradesPointsStatistics(semester.semesterId)
                 .mapToEntities(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/HomeworkRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/HomeworkRepository.kt
index 1a9c7ffaf..7893ef631 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/HomeworkRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/HomeworkRepository.kt
@@ -1,18 +1,16 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.HomeworkDao
 import io.github.wulkanowy.data.db.entities.Homework
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.sunday
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import java.time.LocalDate
@@ -22,7 +20,7 @@ import javax.inject.Singleton
 @Singleton
 class HomeworkRepository @Inject constructor(
     private val homeworkDb: HomeworkDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -55,8 +53,7 @@ class HomeworkRepository @Inject constructor(
             )
         },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getHomework(start.monday, end.sunday)
                 .mapToEntities(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/LuckyNumberRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/LuckyNumberRepository.kt
index 45b7f6e29..3636cb51e 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/LuckyNumberRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/LuckyNumberRepository.kt
@@ -1,12 +1,11 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.LuckyNumberDao
 import io.github.wulkanowy.data.db.entities.LuckyNumber
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntity
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
-import io.github.wulkanowy.utils.init
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.sync.Mutex
@@ -18,7 +17,7 @@ import javax.inject.Singleton
 @Singleton
 class LuckyNumberRepository @Inject constructor(
     private val luckyNumberDb: LuckyNumberDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     private val saveFetchResultMutex = Mutex()
@@ -33,7 +32,9 @@ class LuckyNumberRepository @Inject constructor(
         shouldFetch = { it == null || forceRefresh },
         query = { luckyNumberDb.load(student.studentId, now()) },
         fetch = {
-            sdk.init(student).getLuckyNumber(student.schoolShortName)?.mapToEntity(student)
+            wulkanowySdkFactory.create(student)
+                .getLuckyNumber(student.schoolShortName)
+                ?.mapToEntity(student)
         },
         saveFetchResult = { oldLuckyNumber, newLuckyNumber ->
             newLuckyNumber ?: return@networkBoundResource
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/MessageRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/MessageRepository.kt
index a4517760b..ede2a0fde 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/MessageRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/MessageRepository.kt
@@ -4,6 +4,7 @@ import android.content.Context
 import dagger.hilt.android.qualifiers.ApplicationContext
 import io.github.wulkanowy.R
 import io.github.wulkanowy.data.Resource
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.db.dao.MailboxDao
 import io.github.wulkanowy.data.db.dao.MessageAttachmentDao
@@ -29,11 +30,9 @@ import io.github.wulkanowy.data.pojos.MessageDraft
 import io.github.wulkanowy.data.toFirstResult
 import io.github.wulkanowy.data.waitForResult
 import io.github.wulkanowy.domain.messages.GetMailboxByStudentUseCase
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.sdk.pojo.Folder
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -48,7 +47,7 @@ class MessageRepository @Inject constructor(
     private val messagesDb: MessagesDao,
     private val mutedMessageSendersDao: MutedMessageSendersDao,
     private val messageAttachmentDao: MessageAttachmentDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     @ApplicationContext private val context: Context,
     private val refreshHelper: AutoRefreshHelper,
     private val sharedPrefProvider: SharedPrefProvider,
@@ -82,10 +81,16 @@ class MessageRepository @Inject constructor(
             } else messagesDb.loadMessagesWithMutedAuthor(mailbox.globalKey, folder.id)
         },
         fetch = {
-            sdk.init(student).getMessages(
-                folder = Folder.valueOf(folder.name),
-                mailboxKey = mailbox?.globalKey,
-            ).mapToEntities(student, mailbox, mailboxDao.loadAll(student.email))
+            wulkanowySdkFactory.create(student)
+                .getMessages(
+                    folder = Folder.valueOf(folder.name),
+                    mailboxKey = mailbox?.globalKey,
+                )
+                .mapToEntities(
+                    student = student,
+                    mailbox = mailbox,
+                    allMailboxes = mailboxDao.loadAll(student.email)
+                )
         },
         saveFetchResult = { oldWithAuthors, new ->
             val old = oldWithAuthors.map { it.message }
@@ -115,10 +120,11 @@ class MessageRepository @Inject constructor(
         },
         query = { messagesDb.loadMessageWithAttachment(message.messageGlobalKey) },
         fetch = {
-            sdk.init(student).getMessageDetails(
-                messageKey = it!!.message.messageGlobalKey,
-                markAsRead = message.unread && markAsRead,
-            )
+            wulkanowySdkFactory.create(student)
+                .getMessageDetails(
+                    messageKey = it!!.message.messageGlobalKey,
+                    markAsRead = message.unread && markAsRead,
+                )
         },
         saveFetchResult = { old, new ->
             checkNotNull(old) { "Fetched message no longer exist!" }
@@ -159,19 +165,19 @@ class MessageRepository @Inject constructor(
         recipients: List<Recipient>,
         mailbox: Mailbox,
     ) {
-        sdk.init(student).sendMessage(
-            subject = subject,
-            content = content,
-            recipients = recipients.mapFromEntities(),
-            mailboxId = mailbox.globalKey,
-        )
+        wulkanowySdkFactory.create(student)
+            .sendMessage(
+                subject = subject,
+                content = content,
+                recipients = recipients.mapFromEntities(),
+                mailboxId = mailbox.globalKey,
+            )
         refreshFolders(student, mailbox, listOf(SENT))
     }
 
     suspend fun restoreMessages(student: Student, mailbox: Mailbox?, messages: List<Message>) {
-        sdk.init(student).restoreMessages(
-            messages = messages.map { it.messageGlobalKey },
-        )
+        wulkanowySdkFactory.create(student)
+            .restoreMessages(messages = messages.map { it.messageGlobalKey })
 
         refreshFolders(student, mailbox)
     }
@@ -182,10 +188,11 @@ class MessageRepository @Inject constructor(
 
     suspend fun deleteMessages(student: Student, messages: List<Message>) {
         val firstMessage = messages.first()
-        sdk.init(student).deleteMessages(
-            messages = messages.map { it.messageGlobalKey },
-            removeForever = firstMessage.folderId == TRASHED.id,
-        )
+        wulkanowySdkFactory.create(student)
+            .deleteMessages(
+                messages = messages.map { it.messageGlobalKey },
+                removeForever = firstMessage.folderId == TRASHED.id,
+            )
 
         if (firstMessage.folderId != TRASHED.id) {
             val deletedMessages = messages.map {
@@ -230,7 +237,9 @@ class MessageRepository @Inject constructor(
         },
         query = { mailboxDao.loadAll(student.email, student.symbol, student.schoolSymbol) },
         fetch = {
-            sdk.init(student).getMailboxes().mapToEntities(student)
+            wulkanowySdkFactory.create(student)
+                .getMailboxes()
+                .mapToEntities(student)
         },
         saveFetchResult = { old, new ->
             mailboxDao.deleteAll(old uniqueSubtract new)
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/MobileDeviceRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/MobileDeviceRepository.kt
index 48b4fc287..19466554a 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/MobileDeviceRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/MobileDeviceRepository.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.MobileDeviceDao
 import io.github.wulkanowy.data.db.entities.MobileDevice
 import io.github.wulkanowy.data.db.entities.Semester
@@ -8,11 +9,8 @@ import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.mappers.mapToMobileDeviceToken
 import io.github.wulkanowy.data.networkBoundResource
 import io.github.wulkanowy.data.pojos.MobileDeviceToken
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -21,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class MobileDeviceRepository @Inject constructor(
     private val mobileDb: MobileDeviceDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -42,8 +40,7 @@ class MobileDeviceRepository @Inject constructor(
         },
         query = { mobileDb.loadAll(student.userLoginId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getRegisteredDevices()
                 .mapToEntities(student)
         },
@@ -57,16 +54,14 @@ class MobileDeviceRepository @Inject constructor(
     )
 
     suspend fun unregisterDevice(student: Student, semester: Semester, device: MobileDevice) {
-        sdk.init(student)
-            .switchSemester(semester)
+        wulkanowySdkFactory.create(student, semester)
             .unregisterDevice(device.deviceId)
 
         mobileDb.deleteAll(listOf(device))
     }
 
     suspend fun getToken(student: Student, semester: Semester): MobileDeviceToken {
-        return sdk.init(student)
-            .switchSemester(semester)
+        return wulkanowySdkFactory.create(student, semester)
             .getToken()
             .mapToMobileDeviceToken()
     }
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/NoteRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/NoteRepository.kt
index feb92c154..9551e01eb 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/NoteRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/NoteRepository.kt
@@ -1,16 +1,14 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.NoteDao
 import io.github.wulkanowy.data.db.entities.Note
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.toLocalDate
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
@@ -21,7 +19,7 @@ import javax.inject.Singleton
 @Singleton
 class NoteRepository @Inject constructor(
     private val noteDb: NoteDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -45,8 +43,7 @@ class NoteRepository @Inject constructor(
         },
         query = { noteDb.loadAll(student.studentId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getNotes()
                 .mapToEntities(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/RecipientRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/RecipientRepository.kt
index 4a1474ced..8233d932e 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/RecipientRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/RecipientRepository.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.RecipientDao
 import io.github.wulkanowy.data.db.entities.Mailbox
 import io.github.wulkanowy.data.db.entities.MailboxType
@@ -7,10 +8,8 @@ import io.github.wulkanowy.data.db.entities.Message
 import io.github.wulkanowy.data.db.entities.Recipient
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.uniqueSubtract
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -18,14 +17,15 @@ import javax.inject.Singleton
 @Singleton
 class RecipientRepository @Inject constructor(
     private val recipientDb: RecipientDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
     private val cacheKey = "recipient"
 
     suspend fun refreshRecipients(student: Student, mailbox: Mailbox, type: MailboxType) {
-        val new = sdk.init(student).getRecipients(mailbox.globalKey)
+        val new = wulkanowySdkFactory.create(student)
+            .getRecipients(mailbox.globalKey)
             .mapToEntities(mailbox.globalKey)
         val old = recipientDb.loadAll(type, mailbox.globalKey)
 
@@ -60,7 +60,7 @@ class RecipientRepository @Inject constructor(
     ): List<Recipient> {
         mailbox ?: return emptyList()
 
-        return sdk.init(student)
+        return wulkanowySdkFactory.create(student)
             .getMessageReplayDetails(message.messageGlobalKey)
             .sender
             .let(::listOf)
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/RecoverRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/RecoverRepository.kt
index 5940f477b..b554bda0f 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/RecoverRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/RecoverRepository.kt
@@ -1,17 +1,23 @@
 package io.github.wulkanowy.data.repositories
 
-import io.github.wulkanowy.sdk.Sdk
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import javax.inject.Inject
 import javax.inject.Singleton
 
 @Singleton
-class RecoverRepository @Inject constructor(private val sdk: Sdk) {
+class RecoverRepository @Inject constructor(
+    private val wulkanowySdkFactory: WulkanowySdkFactory
+) {
 
-    suspend fun getReCaptchaSiteKey(host: String, symbol: String): Pair<String, String> {
-        return sdk.getPasswordResetCaptchaCode(host, symbol)
-    }
+    suspend fun getReCaptchaSiteKey(host: String, symbol: String): Pair<String, String> =
+        wulkanowySdkFactory.create()
+            .getPasswordResetCaptchaCode(host, symbol)
 
     suspend fun sendRecoverRequest(
-        url: String, symbol: String, email: String, reCaptchaResponse: String
-    ): String = sdk.sendPasswordResetRequest(url, symbol, email, reCaptchaResponse)
+        url: String,
+        symbol: String,
+        email: String,
+        reCaptchaResponse: String
+    ): String = wulkanowySdkFactory.create()
+        .sendPasswordResetRequest(url, symbol, email, reCaptchaResponse)
 }
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolAnnouncementRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolAnnouncementRepository.kt
index f09a46aa1..6a04ce75f 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolAnnouncementRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolAnnouncementRepository.kt
@@ -1,14 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SchoolAnnouncementDao
 import io.github.wulkanowy.data.db.entities.SchoolAnnouncement
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.sync.Mutex
@@ -18,7 +17,7 @@ import javax.inject.Singleton
 @Singleton
 class SchoolAnnouncementRepository @Inject constructor(
     private val schoolAnnouncementDb: SchoolAnnouncementDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -41,7 +40,7 @@ class SchoolAnnouncementRepository @Inject constructor(
             schoolAnnouncementDb.loadAll(student.userLoginId)
         },
         fetch = {
-            val sdk = sdk.init(student)
+            val sdk = wulkanowySdkFactory.create(student)
             val lastAnnouncements = sdk.getLastAnnouncements().mapToEntities(student)
             val directorInformation = sdk.getDirectorInformation().mapToEntities(student)
             lastAnnouncements + directorInformation
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolRepository.kt
index b42b4d577..c48abb6f8 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolRepository.kt
@@ -1,15 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SchoolDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntity
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -17,7 +15,7 @@ import javax.inject.Singleton
 @Singleton
 class SchoolRepository @Inject constructor(
     private val schoolDb: SchoolDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -40,8 +38,7 @@ class SchoolRepository @Inject constructor(
         },
         query = { schoolDb.load(semester.studentId, semester.classId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getSchool()
                 .mapToEntity(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolsRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolsRepository.kt
index 216a8c112..4a16d6f13 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolsRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/SchoolsRepository.kt
@@ -1,17 +1,15 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.api.SchoolsService
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.db.entities.StudentWithSemesters
 import io.github.wulkanowy.data.pojos.IntegrityRequest
 import io.github.wulkanowy.data.pojos.LoginEvent
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.ui.modules.login.LoginData
 import io.github.wulkanowy.utils.IntegrityHelper
 import io.github.wulkanowy.utils.getCurrentOrLast
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.withTimeout
 import timber.log.Timber
 import java.util.UUID
@@ -23,7 +21,7 @@ import kotlin.time.Duration.Companion.seconds
 class SchoolsRepository @Inject constructor(
     private val integrityHelper: IntegrityHelper,
     private val schoolsService: SchoolsService,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     suspend fun logSchoolLogin(loginData: LoginData, students: List<StudentWithSemesters>) {
@@ -40,10 +38,9 @@ class SchoolsRepository @Inject constructor(
     private suspend fun logLogin(loginData: LoginData, student: Student, semester: Semester) {
         val requestId = UUID.randomUUID().toString()
         val token = integrityHelper.getIntegrityToken(requestId) ?: return
+        val updatedStudent = student.copy(password = loginData.password)
 
-        val schoolInfo = sdk
-            .init(student.copy(password = loginData.password))
-            .switchSemester(semester)
+        val schoolInfo = wulkanowySdkFactory.create(updatedStudent, semester)
             .getSchool()
 
         schoolsService.logLoginEvent(
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/SemesterRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/SemesterRepository.kt
index 9ae22babc..da21f59ac 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/SemesterRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/SemesterRepository.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SemesterDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
@@ -7,7 +8,6 @@ import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.DispatchersProvider
 import io.github.wulkanowy.utils.getCurrentOrLast
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.isCurrent
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.withContext
@@ -18,7 +18,7 @@ import javax.inject.Singleton
 @Singleton
 class SemesterRepository @Inject constructor(
     private val semesterDb: SemesterDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val dispatchers: DispatchersProvider,
 ) {
 
@@ -60,7 +60,10 @@ class SemesterRepository @Inject constructor(
     }
 
     private suspend fun refreshSemesters(student: Student) {
-        val new = sdk.init(student).getSemesters().mapToEntities(student.studentId)
+        val new = wulkanowySdkFactory.create(student)
+            .getSemesters()
+            .mapToEntities(student.studentId)
+
         if (new.isEmpty()) return Timber.i("Empty semester list!")
 
         val old = semesterDb.loadAll(student.studentId, student.classId)
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/StudentInfoRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/StudentInfoRepository.kt
index d42be180d..db4c0aebb 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/StudentInfoRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/StudentInfoRepository.kt
@@ -1,13 +1,11 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.StudentInfoDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntity
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -15,7 +13,7 @@ import javax.inject.Singleton
 @Singleton
 class StudentInfoRepository @Inject constructor(
     private val studentInfoDao: StudentInfoDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
 ) {
 
     private val saveFetchResultMutex = Mutex()
@@ -30,9 +28,9 @@ class StudentInfoRepository @Inject constructor(
         shouldFetch = { it == null || forceRefresh },
         query = { studentInfoDao.loadStudentInfo(student.studentId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
-                .getStudentInfo().mapToEntity(semester)
+            wulkanowySdkFactory.create(student, semester)
+                .getStudentInfo()
+                .mapToEntity(semester)
         },
         saveFetchResult = { old, new ->
             if (old != null && new != old) {
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/StudentRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/StudentRepository.kt
index e063840cb..9a5ecd538 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/StudentRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/StudentRepository.kt
@@ -1,6 +1,7 @@
 package io.github.wulkanowy.data.repositories
 
 import androidx.room.withTransaction
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.AppDatabase
 import io.github.wulkanowy.data.db.dao.SemesterDao
 import io.github.wulkanowy.data.db.dao.StudentDao
@@ -14,9 +15,7 @@ import io.github.wulkanowy.data.mappers.mapToPojo
 import io.github.wulkanowy.data.pojos.RegisterUser
 import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.DispatchersProvider
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.security.Scrambler
-import io.github.wulkanowy.utils.switchSemester
 import kotlinx.coroutines.withContext
 import javax.inject.Inject
 import javax.inject.Singleton
@@ -26,7 +25,7 @@ class StudentRepository @Inject constructor(
     private val dispatchers: DispatchersProvider,
     private val studentDb: StudentDao,
     private val semesterDb: SemesterDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val appDatabase: AppDatabase,
     private val scrambler: Scrambler,
 ) {
@@ -37,7 +36,7 @@ class StudentRepository @Inject constructor(
         pin: String,
         symbol: String,
         token: String
-    ): RegisterUser = sdk
+    ): RegisterUser = wulkanowySdkFactory.create()
         .getStudentsFromHebe(token, pin, symbol, "")
         .mapToPojo(null)
 
@@ -47,7 +46,7 @@ class StudentRepository @Inject constructor(
         scrapperBaseUrl: String,
         domainSuffix: String,
         symbol: String
-    ): RegisterUser = sdk
+    ): RegisterUser = wulkanowySdkFactory.create()
         .getUserSubjectsFromScrapper(email, password, scrapperBaseUrl, domainSuffix, symbol)
         .mapToPojo(password)
 
@@ -56,7 +55,7 @@ class StudentRepository @Inject constructor(
         password: String,
         scrapperBaseUrl: String,
         symbol: String
-    ): RegisterUser = sdk
+    ): RegisterUser = wulkanowySdkFactory.create()
         .getStudentsHybrid(email, password, scrapperBaseUrl, "", symbol)
         .mapToPojo(password)
 
@@ -149,13 +148,11 @@ class StudentRepository @Inject constructor(
         .distinctBy { it.student.studentName }.size == 1
 
     suspend fun authorizePermission(student: Student, semester: Semester, pesel: String) =
-        sdk.init(student)
-            .switchSemester(semester)
+        wulkanowySdkFactory.create(student, semester)
             .authorizePermission(pesel)
 
     suspend fun refreshStudentName(student: Student, semester: Semester) {
-        val newCurrentApiStudent = sdk.init(student)
-            .switchSemester(semester)
+        val newCurrentApiStudent = wulkanowySdkFactory.create(student, semester)
             .getCurrentStudent() ?: return
 
         val studentName = StudentName(
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/SubjectRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/SubjectRepository.kt
index cf7f86c22..573c7c149 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/SubjectRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/SubjectRepository.kt
@@ -1,15 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.SubjectDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -18,7 +16,7 @@ import javax.inject.Singleton
 @Singleton
 class SubjectRepository @Inject constructor(
     private val subjectDao: SubjectDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -39,8 +37,7 @@ class SubjectRepository @Inject constructor(
         },
         query = { subjectDao.loadAll(semester.diaryId, semester.studentId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getSubjects()
                 .mapToEntities(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/TeacherRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/TeacherRepository.kt
index 5a488b27c..a5a6e3f9c 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/TeacherRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/TeacherRepository.kt
@@ -1,15 +1,13 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.TeacherDao
 import io.github.wulkanowy.data.db.entities.Semester
 import io.github.wulkanowy.data.db.entities.Student
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.sync.Mutex
 import javax.inject.Inject
@@ -18,7 +16,7 @@ import javax.inject.Singleton
 @Singleton
 class TeacherRepository @Inject constructor(
     private val teacherDb: TeacherDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val refreshHelper: AutoRefreshHelper,
 ) {
 
@@ -39,8 +37,7 @@ class TeacherRepository @Inject constructor(
         },
         query = { teacherDb.loadAll(semester.studentId, semester.classId) },
         fetch = {
-            sdk.init(student)
-                .switchSemester(semester)
+            wulkanowySdkFactory.create(student, semester)
                 .getTeachers()
                 .mapToEntities(semester)
         },
diff --git a/app/src/main/java/io/github/wulkanowy/data/repositories/TimetableRepository.kt b/app/src/main/java/io/github/wulkanowy/data/repositories/TimetableRepository.kt
index 0d208c1fc..335789991 100644
--- a/app/src/main/java/io/github/wulkanowy/data/repositories/TimetableRepository.kt
+++ b/app/src/main/java/io/github/wulkanowy/data/repositories/TimetableRepository.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.data.db.dao.TimetableAdditionalDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
 import io.github.wulkanowy.data.db.dao.TimetableHeaderDao
@@ -11,14 +12,11 @@ import io.github.wulkanowy.data.db.entities.TimetableHeader
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.data.networkBoundResource
 import io.github.wulkanowy.data.pojos.TimetableFull
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.services.alarm.TimetableNotificationSchedulerHelper
 import io.github.wulkanowy.utils.AutoRefreshHelper
 import io.github.wulkanowy.utils.getRefreshKey
-import io.github.wulkanowy.utils.init
 import io.github.wulkanowy.utils.monday
 import io.github.wulkanowy.utils.sunday
-import io.github.wulkanowy.utils.switchSemester
 import io.github.wulkanowy.utils.uniqueSubtract
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.combine
@@ -33,7 +31,7 @@ class TimetableRepository @Inject constructor(
     private val timetableDb: TimetableDao,
     private val timetableAdditionalDb: TimetableAdditionalDao,
     private val timetableHeaderDb: TimetableHeaderDao,
-    private val sdk: Sdk,
+    private val wulkanowySdkFactory: WulkanowySdkFactory,
     private val schedulerHelper: TimetableNotificationSchedulerHelper,
     private val refreshHelper: AutoRefreshHelper,
 ) {
@@ -74,8 +72,7 @@ class TimetableRepository @Inject constructor(
         },
         query = { getFullTimetableFromDatabase(student, semester, start, end) },
         fetch = {
-            val timetableFull = sdk.init(student)
-                .switchSemester(semester)
+            val timetableFull = wulkanowySdkFactory.create(student, semester)
                 .getTimetable(start.monday, end.sunday)
 
             timetableFull.mapToEntities(semester)
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/captcha/CaptchaDialog.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/captcha/CaptchaDialog.kt
index 98b4fda71..ce2173d28 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/captcha/CaptchaDialog.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/captcha/CaptchaDialog.kt
@@ -10,8 +10,8 @@ import android.webkit.WebViewClient
 import androidx.core.os.bundleOf
 import dagger.hilt.android.AndroidEntryPoint
 import io.github.wulkanowy.R
+import io.github.wulkanowy.data.WulkanowySdkFactory
 import io.github.wulkanowy.databinding.DialogCaptchaBinding
-import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.ui.base.BaseDialogFragment
 import io.github.wulkanowy.utils.WebkitCookieManagerProxy
 import timber.log.Timber
@@ -21,7 +21,7 @@ import javax.inject.Inject
 class CaptchaDialog : BaseDialogFragment<DialogCaptchaBinding>() {
 
     @Inject
-    lateinit var sdk: Sdk
+    lateinit var wulkanowySdkFactory: WulkanowySdkFactory
 
     @Inject
     lateinit var webkitCookieManagerProxy: WebkitCookieManagerProxy
@@ -59,7 +59,7 @@ class CaptchaDialog : BaseDialogFragment<DialogCaptchaBinding>() {
             webView = this
             with(settings) {
                 javaScriptEnabled = true
-                userAgentString = sdk.userAgent
+                userAgentString = wulkanowySdkFactory.create().userAgent
             }
 
             webViewClient = object : WebViewClient() {
diff --git a/app/src/main/java/io/github/wulkanowy/utils/SdkExtension.kt b/app/src/main/java/io/github/wulkanowy/utils/SdkExtension.kt
deleted file mode 100644
index 9b6ca7060..000000000
--- a/app/src/main/java/io/github/wulkanowy/utils/SdkExtension.kt
+++ /dev/null
@@ -1,42 +0,0 @@
-package io.github.wulkanowy.utils
-
-import io.github.wulkanowy.data.db.entities.Semester
-import io.github.wulkanowy.data.db.entities.Student
-import io.github.wulkanowy.sdk.Sdk
-import timber.log.Timber
-
-fun Sdk.init(student: Student): Sdk {
-    email = student.email
-    password = student.password
-    symbol = student.symbol
-    schoolSymbol = student.schoolSymbol
-    studentId = student.studentId
-    classId = student.classId
-    emptyCookieJarInterceptor = true
-
-    if (Sdk.Mode.valueOf(student.loginMode) == Sdk.Mode.HEBE) {
-        mobileBaseUrl = student.mobileBaseUrl
-    } else {
-        scrapperBaseUrl = student.scrapperBaseUrl
-        domainSuffix = student.scrapperDomainSuffix
-        loginType = Sdk.ScrapperLoginType.valueOf(student.loginType)
-    }
-
-    mode = Sdk.Mode.valueOf(student.loginMode)
-    mobileBaseUrl = student.mobileBaseUrl
-    keyId = student.certificateKey
-    privatePem = student.privateKey
-
-    Timber.d("Sdk in ${student.loginMode} mode reinitialized")
-
-    return this
-}
-
-fun Sdk.switchSemester(semester: Semester): Sdk {
-    return switchDiary(
-        diaryId = semester.diaryId,
-        kindergartenDiaryId = semester.kindergartenDiaryId,
-        schoolYear = semester.schoolYear,
-        unitId = semester.unitId,
-    )
-}
diff --git a/app/src/test/java/io/github/wulkanowy/WulkanowySdkFactoryCreator.kt b/app/src/test/java/io/github/wulkanowy/WulkanowySdkFactoryCreator.kt
new file mode 100644
index 000000000..dd1ce0569
--- /dev/null
+++ b/app/src/test/java/io/github/wulkanowy/WulkanowySdkFactoryCreator.kt
@@ -0,0 +1,12 @@
+package io.github.wulkanowy
+
+import io.github.wulkanowy.data.WulkanowySdkFactory
+import io.github.wulkanowy.sdk.Sdk
+import io.mockk.every
+import io.mockk.mockk
+
+fun createWulkanowySdkFactoryMock(sdk: Sdk) = mockk<WulkanowySdkFactory>()
+    .apply {
+        every { create() } returns sdk
+        every { create(any(), any()) } answers { callOriginal() }
+    }
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/AttendanceRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/AttendanceRepositoryTest.kt
index e64144c2f..b34902363 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/AttendanceRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/AttendanceRepositoryTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.AttendanceDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
@@ -16,8 +17,8 @@ import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.test.runTest
@@ -30,8 +31,8 @@ import io.github.wulkanowy.sdk.pojo.Attendance as SdkAttendance
 
 class AttendanceRepositoryTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var attendanceDb: AttendanceDao
@@ -63,7 +64,8 @@ class AttendanceRepositoryTest {
         every { refreshHelper.shouldBeRefreshed(any()) } returns false
         coEvery { timetableDb.load(any(), any(), any(), any()) } returns emptyList()
 
-        attendanceRepository = AttendanceRepository(attendanceDb, timetableDb, sdk, refreshHelper)
+        attendanceRepository =
+            AttendanceRepository(attendanceDb, timetableDb, wulkanowySdkFactory, refreshHelper)
     }
 
     @Test
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepositoryTest.kt
index f8f688501..e20603d22 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/CompletedLessonsRepositoryTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.CompletedLessonsDao
 import io.github.wulkanowy.data.errorOrNull
@@ -15,8 +16,8 @@ import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.test.runTest
 import org.junit.Assert.assertEquals
@@ -28,8 +29,8 @@ import io.github.wulkanowy.sdk.pojo.CompletedLesson as SdkCompletedLesson
 
 class CompletedLessonsRepositoryTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var completedLessonDb: CompletedLessonsDao
@@ -58,7 +59,7 @@ class CompletedLessonsRepositoryTest {
         every { refreshHelper.shouldBeRefreshed(any()) } returns false
 
         completedLessonRepository =
-            CompletedLessonsRepository(completedLessonDb, sdk, refreshHelper)
+            CompletedLessonsRepository(completedLessonDb, wulkanowySdkFactory, refreshHelper)
     }
 
     @Test
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/ExamRemoteTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/ExamRemoteTest.kt
index d1ed9ca32..671c66f95 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/ExamRemoteTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/ExamRemoteTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.ExamDao
 import io.github.wulkanowy.data.errorOrNull
@@ -15,8 +16,8 @@ import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.test.runTest
@@ -28,8 +29,8 @@ import io.github.wulkanowy.sdk.pojo.Exam as SdkExam
 
 class ExamRemoteTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var examDb: ExamDao
@@ -59,7 +60,7 @@ class ExamRemoteTest {
         MockKAnnotations.init(this)
         every { refreshHelper.shouldBeRefreshed(any()) } returns false
 
-        examRepository = ExamRepository(examDb, sdk, refreshHelper)
+        examRepository = ExamRepository(examDb, wulkanowySdkFactory, refreshHelper)
     }
 
     @Test
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/GradeRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/GradeRepositoryTest.kt
index 0ea5d3fa4..0045badf1 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/GradeRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/GradeRepositoryTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.GradeDao
 import io.github.wulkanowy.data.db.dao.GradeDescriptiveDao
@@ -18,8 +19,8 @@ import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.test.runTest
@@ -35,8 +36,8 @@ import io.github.wulkanowy.sdk.pojo.Grade as SdkGrade
 
 class GradeRepositoryTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var gradeDb: GradeDao
@@ -65,7 +66,7 @@ class GradeRepositoryTest {
             gradeDb = gradeDb,
             gradeSummaryDb = gradeSummaryDb,
             gradeDescriptiveDb = gradeDescriptiveDb,
-            sdk = sdk,
+            wulkanowySdkFactory = wulkanowySdkFactory,
             refreshHelper = refreshHelper,
         )
 
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepositoryTest.kt
index dfd36ee1a..6733190b7 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/GradeStatisticsRepositoryTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.GradePartialStatisticsDao
 import io.github.wulkanowy.data.db.dao.GradePointsStatisticsDao
@@ -13,9 +14,14 @@ import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.sdk.pojo.GradeStatisticsItem
 import io.github.wulkanowy.sdk.pojo.GradeStatisticsSubject
 import io.github.wulkanowy.utils.AutoRefreshHelper
-import io.mockk.*
+import io.mockk.MockKAnnotations
+import io.mockk.Runs
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
+import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.runBlocking
 import org.junit.Assert.assertEquals
@@ -24,8 +30,8 @@ import org.junit.Test
 
 class GradeStatisticsRepositoryTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var gradePartialStatisticsDb: GradePartialStatisticsDao
@@ -54,7 +60,7 @@ class GradeStatisticsRepositoryTest {
             gradePartialStatisticsDb = gradePartialStatisticsDb,
             gradePointsStatisticsDb = gradePointsStatisticsDb,
             gradeSemesterStatisticsDb = gradeSemesterStatisticsDb,
-            sdk = sdk,
+            wulkanowySdkFactory = wulkanowySdkFactory,
             refreshHelper = refreshHelper,
         )
     }
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/LuckyNumberRemoteTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/LuckyNumberRemoteTest.kt
index fa78b1bd3..854d5d548 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/LuckyNumberRemoteTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/LuckyNumberRemoteTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.LuckyNumberDao
 import io.github.wulkanowy.data.errorOrNull
@@ -12,8 +13,8 @@ import io.mockk.Runs
 import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.test.runTest
@@ -25,8 +26,8 @@ import io.github.wulkanowy.sdk.pojo.LuckyNumber as SdkLuckyNumber
 
 class LuckyNumberRemoteTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var luckyNumberDb: LuckyNumberDao
@@ -43,7 +44,7 @@ class LuckyNumberRemoteTest {
     fun setUp() {
         MockKAnnotations.init(this)
 
-        luckyNumberRepository = LuckyNumberRepository(luckyNumberDb, sdk)
+        luckyNumberRepository = LuckyNumberRepository(luckyNumberDb, wulkanowySdkFactory)
     }
 
     @Test
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/MessageRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/MessageRepositoryTest.kt
index fbbe49345..9819fb1f7 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/MessageRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/MessageRepositoryTest.kt
@@ -1,6 +1,7 @@
 package io.github.wulkanowy.data.repositories
 
 import android.content.Context
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.SharedPrefProvider
 import io.github.wulkanowy.data.db.dao.MailboxDao
@@ -28,10 +29,9 @@ import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
 import io.mockk.mockk
-import kotlinx.coroutines.ExperimentalCoroutinesApi
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.flow.toList
 import kotlinx.coroutines.runBlocking
@@ -45,11 +45,10 @@ import java.time.Instant
 import java.time.ZoneOffset
 import kotlin.test.assertTrue
 
-@OptIn(ExperimentalCoroutinesApi::class)
 class MessageRepositoryTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var messageDb: MessagesDao
@@ -102,7 +101,7 @@ class MessageRepositoryTest {
             messagesDb = messageDb,
             mutedMessageSendersDao = mutesDb,
             messageAttachmentDao = messageAttachmentDao,
-            sdk = sdk,
+            wulkanowySdkFactory = wulkanowySdkFactory,
             context = context,
             refreshHelper = refreshHelper,
             sharedPrefProvider = sharedPrefProvider,
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/MobileDeviceRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/MobileDeviceRepositoryTest.kt
index aa93a5e6f..5513a95fe 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/MobileDeviceRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/MobileDeviceRepositoryTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.MobileDeviceDao
 import io.github.wulkanowy.data.errorOrNull
@@ -16,8 +17,8 @@ import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.test.runTest
 import org.junit.Assert
@@ -28,8 +29,8 @@ import java.time.ZonedDateTime.of
 
 class MobileDeviceRepositoryTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var mobileDeviceDb: MobileDeviceDao
@@ -53,7 +54,8 @@ class MobileDeviceRepositoryTest {
         MockKAnnotations.init(this)
         every { refreshHelper.shouldBeRefreshed(any()) } returns false
 
-        mobileDeviceRepository = MobileDeviceRepository(mobileDeviceDb, sdk, refreshHelper)
+        mobileDeviceRepository =
+            MobileDeviceRepository(mobileDeviceDb, wulkanowySdkFactory, refreshHelper)
     }
 
     @Test
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/RecipientLocalTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/RecipientLocalTest.kt
index e608cafb1..0ecaad9ea 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/RecipientLocalTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/RecipientLocalTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.db.dao.RecipientDao
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.getMailboxEntity
@@ -7,9 +8,14 @@ import io.github.wulkanowy.getStudentEntity
 import io.github.wulkanowy.sdk.Sdk
 import io.github.wulkanowy.sdk.pojo.MailboxType
 import io.github.wulkanowy.utils.AutoRefreshHelper
-import io.mockk.*
+import io.mockk.MockKAnnotations
+import io.mockk.Runs
+import io.mockk.coEvery
+import io.mockk.coVerify
+import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
+import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.runBlocking
 import org.junit.Assert.assertEquals
 import org.junit.Before
@@ -18,8 +24,8 @@ import io.github.wulkanowy.sdk.pojo.Recipient as SdkRecipient
 
 class RecipientLocalTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var recipientDb: RecipientDao
@@ -63,7 +69,7 @@ class RecipientLocalTest {
         MockKAnnotations.init(this)
         every { refreshHelper.shouldBeRefreshed(any()) } returns false
 
-        recipientRepository = RecipientRepository(recipientDb, sdk, refreshHelper)
+        recipientRepository = RecipientRepository(recipientDb, wulkanowySdkFactory, refreshHelper)
     }
 
     @Test
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/SemesterRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/SemesterRepositoryTest.kt
index 96db8a794..3a18ac48a 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/SemesterRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/SemesterRepositoryTest.kt
@@ -1,6 +1,7 @@
 package io.github.wulkanowy.data.repositories
 
 import io.github.wulkanowy.TestDispatchersProvider
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.db.dao.SemesterDao
 import io.github.wulkanowy.data.mappers.mapToEntities
 import io.github.wulkanowy.getSemesterEntity
@@ -12,8 +13,8 @@ import io.mockk.Runs
 import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
+import io.mockk.spyk
 import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.test.runTest
 import org.junit.Assert.assertEquals
@@ -24,8 +25,8 @@ import java.time.LocalDate.now
 
 class SemesterRepositoryTest {
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var semesterDb: SemesterDao
@@ -38,7 +39,8 @@ class SemesterRepositoryTest {
     fun initTest() {
         MockKAnnotations.init(this)
 
-        semesterRepository = SemesterRepository(semesterDb, sdk, TestDispatchersProvider())
+        semesterRepository =
+            SemesterRepository(semesterDb, wulkanowySdkFactory, TestDispatchersProvider())
     }
 
     @Test
diff --git a/app/src/test/java/io/github/wulkanowy/data/repositories/TimetableRepositoryTest.kt b/app/src/test/java/io/github/wulkanowy/data/repositories/TimetableRepositoryTest.kt
index 2a61f99ce..a14605435 100644
--- a/app/src/test/java/io/github/wulkanowy/data/repositories/TimetableRepositoryTest.kt
+++ b/app/src/test/java/io/github/wulkanowy/data/repositories/TimetableRepositoryTest.kt
@@ -1,5 +1,6 @@
 package io.github.wulkanowy.data.repositories
 
+import io.github.wulkanowy.createWulkanowySdkFactoryMock
 import io.github.wulkanowy.data.dataOrNull
 import io.github.wulkanowy.data.db.dao.TimetableAdditionalDao
 import io.github.wulkanowy.data.db.dao.TimetableDao
@@ -18,9 +19,9 @@ import io.mockk.coEvery
 import io.mockk.coVerify
 import io.mockk.every
 import io.mockk.impl.annotations.MockK
-import io.mockk.impl.annotations.SpyK
 import io.mockk.just
 import io.mockk.mockk
+import io.mockk.spyk
 import kotlinx.coroutines.flow.flowOf
 import kotlinx.coroutines.runBlocking
 import org.junit.Assert.assertEquals
@@ -37,8 +38,8 @@ class TimetableRepositoryTest {
     @MockK(relaxed = true)
     private lateinit var timetableNotificationSchedulerHelper: TimetableNotificationSchedulerHelper
 
-    @SpyK
-    private var sdk = Sdk()
+    private var sdk = spyk<Sdk>()
+    private val wulkanowySdkFactory = createWulkanowySdkFactoryMock(sdk)
 
     @MockK
     private lateinit var timetableDb: TimetableDao
@@ -71,7 +72,7 @@ class TimetableRepositoryTest {
             timetableDb,
             timetableAdditionalDao,
             timetableHeaderDao,
-            sdk,
+            wulkanowySdkFactory,
             timetableNotificationSchedulerHelper,
             refreshHelper
         )