johnkil’s gists

johnkil / EncryptedSettings.kt

Created July 17, 2025 11:48 — forked from AJIEKCX/EncryptedSettings.kt

A secure implementation of SharedPreferences for the MultiplatformSettings library

	import android.content.SharedPreferences
	import com.google.crypto.tink.Aead
	import com.google.crypto.tink.KeysetHandle
	import com.google.crypto.tink.RegistryConfiguration
	import com.google.crypto.tink.TinkProtoKeysetFormat
	import com.google.crypto.tink.aead.AeadConfig
	import com.google.crypto.tink.aead.PredefinedAeadParameters
	import com.google.crypto.tink.integration.android.AndroidKeystore
	import com.google.crypto.tink.subtle.Base64
	import com.google.crypto.tink.subtle.Hex

johnkil / EventK.kt

Created November 27, 2024 13:31

	data class Event(
	val id: Int,
	val image: Image?,
	val title: String,
	val description: String?,
	val areQuestionsAllowed: Boolean,
	val startDate: Instant,
	val endDate: Instant,
	val organizer: User,
	val address: EventLocation?,

johnkil / ZipUtils.kt

Created October 7, 2024 09:06

	import java.nio.file.*
	import java.util.zip.ZipEntry
	import java.util.zip.ZipOutputStream
	import kotlin.io.path.*

	@OptIn(ExperimentalPathApi::class)
	fun ZipOutputStream.addFolder(entryName: String, folder: Path) {
	for (path in folder.walk()) {
	val relativized = folder.relativize(path)
	val prefix = if (entryName.isNotEmpty()) {

johnkil / SyncChallengesProgressUseCase.kt

Created October 20, 2023 15:02

	class SyncChallengesProgressUseCase @Inject constructor(
	private val challengesRepository: ChallengesRepository,
	private val getStepsFromFitnessApp: GetStepsFromFitnessAppUseCase,
	getPhoneManufactureData: GetPhoneManufactureDataUseCase
	) {
	private val deviceId = getPhoneManufactureData().deviceId

	suspend operator fun invoke(startDate: Instant): SyncChallengesProgressResult {
	val now = Clock.System.now()
	if (startDate.daysUntil(now, TimeZone.currentSystemDefault()) == 0) {

johnkil / OAuthTokenLocalDataSource.kt

Created May 6, 2023 13:28

	@Singleton
	class OAuthTokenLocalDataSource @Inject constructor(
	app: Application
	) {
	private val sharedPrefs: SharedPreferences = EncryptedSharedPreferences.create(
	"oauth_token_local_data_source",
	MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
	app,
	EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
	EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM

johnkil / BugsnagTree.kt

Created February 20, 2023 15:35

	import android.util.Log
	import com.bugsnag.android.Bugsnag
	import timber.log.Timber
	import java.util.*

	class BugsnagTree : Timber.DebugTree() {
	// Adding one to the initial size accounts for the add before remove.
	private val buffer = ArrayDeque<String>(BUFFER_SIZE + 1)

	override fun isLoggable(tag: String?, priority: Int): Boolean = priority >= Log.INFO

johnkil / zen.md

Created June 8, 2022 09:57

Задача: Спроектировать Дзен как продукт

johnkil / InitAppUpdateFlow.kt

Created April 25, 2022 15:21

Support in-app updates

	private fun initAppUpdateFlow() {
	logcat { "check app update" }
	val appUpdateManager = AppUpdateManagerFactory.create(this)
	lifecycleScope.launch {
	try {
	appUpdateManager.requestUpdateFlow().collect(::onAppUpdateResult)
	} catch (e: InstallException) {
	logcat(LogPriority.ERROR) { "Failed to request app update flow\n${e.asLog()}" }
	}
	}

johnkil / CurrencyCode.kt

Last active March 30, 2021 16:11

	inline class CurrencyCode private constructor(private val isoCode: String) {

	override fun toString(): String = isoCode

	companion object {
	fun from(isoCode: String): CurrencyCode {
	require(isoCode.matches("^[A-Za-z]{3}$".toRegex())) {
	"Invalid ISO 4217 currency code format: $isoCode"
	}
	return CurrencyCode(isoCode.toUpperCase(Locale.ROOT).intern())

johnkil / CompositeOnFocusChangeListener.kt

Last active March 30, 2021 16:11

	class CompositeOnFocusChangeListener constructor(
	vararg listeners: OnFocusChangeListener
	) : OnFocusChangeListener, MutableSet<OnFocusChangeListener> by listeners.toMutableSet() {

	override fun onFocusChange(view: View, hasFocus: Boolean) {
	forEach { it.onFocusChange(view, hasFocus) }
	}
	}

	fun View.addOnFocusChangeListener(listener: OnFocusChangeListener) {

Evgenii Shishkin johnkil