johnkil

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

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

@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

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

Задача: Спроектировать Дзен как продукт

• умная лента
• поиск*
• 50 мил DAU
• текстовые статьи, фото, видео
• каналы ,можно подписаться
• уведомления push
• генерация контента

johnkil

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

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

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) {

johnkil

interface Validator<in V, out E> {
  fun validate(value: V): ValidationResult<E>
}

class CompositeValidator<in V, out E>(
  private vararg val validators: Validator<V, E>
) : Validator<V, E> {

  override fun validate(value: V): ValidationResult<E> {
    for (validator in validators) {

johnkil

// Dagger 1 example
@Module(
        complete = false,
        library = true
)
public final class ApiModule {
    @Provides
    @Singleton
    Retrofit provideRetrofit(Gson gson, Application app) {
        return new Retrofit.Builder()