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2025-02-18 19:41:28 +03:00 · 2025-02-18 19:41:28 +03:00 · 8cdf504893
commit 8cdf504893
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--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1,10 @@
+*.iml
+.gradle
+/local.properties
+/.idea
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
--- a/.gitmodules
+++ b/.gitmodules
@ -0,0 +1,6 @@
+[submodule "gradle"]
+	path = gradle
+	url = https://git.sicampus.ru/core/gradle.git
+[submodule "buildSrc"]
+	path = buildSrc
+	url = https://git.sicampus.ru/core/dependecies.git
--- a/README.md
+++ b/README.md
@ -0,0 +1,122 @@
+[![Android Studio version](https://img.shields.io/endpoint?url=https%3A%2F%2Fsicampus.ru%2Fgitea%2Fcore%2Fdocs%2Fraw%2Fbranch%2Fmain%2Fandroid-studio-label.json)](https://sicampus.ru/gitea/core/docs/src/branch/main/how-upload-project.md)
+
+# НТО 2024. II отборочный этап. Командные задани — клиентская часть
+
+## 📖 Предыстория
+В компании S контроль доступа в офис осуществляется с помощью СКУД (системы контроля управления доступом). На данный момент у каждого сотрудника компании есть карта-пропуск с NFC меткой. А у каждой входной двери есть считыватель с обеих сторон. При поднесении карты к считывателю, дверь открывается, а информация о времени входа или выхода сотрудника фиксируется в базе данных. 
+Администрации компании S требуется мобильное приложение, как для рядовых сотрудников, так и для администрации с возможностью просмотра посещений и работой электронного пропуска как временной замены обычного (при помощи сканировании QR кода, который находится на считывателе). Поскольку в приложении есть возможность использовать телефон как пропуск - то к данному приложению повышенные требования к безопасности всех данных, находящихся внутри него.
+
+
+
+## 📋 Системные требования
+
+| **Параметр**                | **Требование**                        |
+|-----------------------------|---------------------------------------|
+| **Минимальная версия Android** | 9.0 (API 28)                         |
+| **Целевая версия Android**    | 14 (API 34)                          |
+| **Поддерживаемые устройства** | смартфоны, планшеты                  |
+| **Ориентация экранов**         | портретная                           |
+| **Языки**                    | русский, английский                  |
+| **Разрешения**               | доступ к интернету, камера (при необходимости) |
+
+
+
+## 📱 Техническое задание
+Требуется разработать нативное мобильное приложение, которое будет содержать следующие экраны.
+
+
+### 1. Экран авторизации
+
+> Данный экран должен быть показан при первом входе в приложение, а также в ситуациях, когда пользователь не зарегистрировался в приложении.
+
+#### Элементы, которые должны присутствовать на экране:
+- Поле ввода (`id/username`), в котором пользователю необходимо ввести свой логин.
+- Кнопка входа (`id/login`), по нажатию на которую пользователь авторизуется в системе.
+- По умолчанию скрытое текстовое поле с ошибкой (`id/error`).
+
+#### Требования к компонентам:
+1. В пустом поле ввода должна отображаться подсказка, что требуется ввести пользователю.
+2. Если хотя бы одно из условий ниже соблюдено - кнопка должна быть неактивной:
+   - Поле ввода пустое.
+   - Количество символов менее 3х.
+   - Логин начинается с цифры.
+   - Логин содержит символы, отличные от латинского алфавита и цифр.
+3. Поле ввода и кнопку должно быть видно при раскрытии клавиатуры.
+4. - При нажатии на кнопку входа необходимо проверить, что данный пользователь существует с помощью запроса `api/<LOGIN>/auth` (подробное описание представлено в техническом задании серверной части).
+5. В случае отсутствия логина или любой другой неполадки - необходимо вывести ошибку, пока пользователь не изменит текстовое поле или повторно не нажмёт на кнопку.
+6. После нажатия на кнопку - логин должен быть сохранён и при следующем открытии приложения экран авторизации не должен быть показан.
+7. После нажатия на кнопку - при нажатии стрелки назад - экран авторизации не должен быть показан повторно.
+8. Экран авторизации показывается только в случае, если пользователь неавторизован.
+
+
+
+
+### 2. Главный экран
+
+> Данный экран содержит общую информацию о пользователе:
+>- ФИО
+>- Фото
+>- Должность
+>- Время последнего входа
+
+#### Элементы, которые должны присутствовать на экране:
+- Текстовое поле (`id/fullname`), в котором написано имя пользователя.
+- Изображение (`id/photo`), на котором отображено фото пользователя.
+- Текстовое поле (`id/position`), в котором написана должность пользователя.
+- Текстовое поле (`id/lastEntry`), в котором написана дата и время последнего входа пользователя.
+- Кнопка (`id/logout`) для выхода пользователя из аккаунта.
+- Кнопка (`id/refresh`) для обновления данных.
+- Кнопка (`id/scan`) для сканирования QR кода.
+- По умолчанию скрытое текстовое поле с ошибкой (`id/error`).
+
+#### Требования к компонентам:
+- В случае любой ошибки необходимо скрыть все элементы, кроме текстового поля с ошибкой и кнопки обновления данных.
+- Для получения данных необходимо использовать сетевой запрос `/api/<LOGIN>/info`.
+- Формат даты и времени последнего входа пользователя: `yyyy-MM-dd HH:mm` (например: 2024-02-31 08:31). Время необходимо отображать с сервера, без поправок на часовой пояс или локальное смещение.
+- При нажатии на кнопку выход все данные (если есть) пользователя должны быть очищены, а приложение должно открыть экран авторизации.
+- При нажатии кнопки сканирования необходимо открыть экран сканирования QR кода.
+- При нажатии на кнопку обновления данных - необходимо повторно вызывать сетевой запрос для получения актуальных данных.
+
+
+
+### 3. Экран сканирования QR-кода
+
+> Данный экран позволяет отсканировать код на турникете и войти с помощью смартфона. В данном случае данный экран будет уже написан и представлен dам в готовом виде в заготовке. Вам необходимо только подписаться на его результат с помощью **Result API** и обработать считанные данные из QR кода. **Данный экран нельзя модифицировать. Он поставляется как есть.**
+
+
+
+### 4. Экран с результатом сканирования QR кода
+
+> На данном экране необходимо вывести успешность или неуспешность входа с помощью метода QR кода.
+
+#### Элементы, которые должны присутствовать на экране:
+- Текстовое поле (`id/result`), где содержится текст об успешности или неуспешности входа.
+- Кнопка (`id/close`) для закрытия данного экрана.
+
+#### Требования к компонентам:
+- В случае, если результат пришёл пустым или со статусом “Отмена” - необходимо вывести пользователю текст:  
+  *"Вход был отменён/Operation was cancelled"*
+- В случае, если данные пришли, то необходимо их отправить на сервер с запросом `api/<LOGIN>/open`, добавив данные из результата и получить ответ.
+- Если сервер ответил успешно - то отображаем текст:  
+  *"Успешно/Success"*
+- Если сервер ответил любой ошибкой - то отображаем текст:  
+  *"Что-то пошло не так/Something wrong"*
+- Кнопка закрытия всегда открывает главный экран.
+
+
+
+## 🛠 Решение
+
+Необходимо загрузить свое решение в систему [по ссылке](https://innovationcampus.ru/lms/mod/quiz/view.php?id=2149).
+
+Отметим, что работу необходимо осуществлять в представленных проектах-заготовках (шаблонах). 
+
+
+
+## ✅ Особенности оценивания
+
+Оценивание происходит с помощью автоматической системы тестирования, которая в автоматическом режиме находит элементы и взаимодействует с ними (именно для этого у каждого элемента указан уникальный идентификатор, по которому будет производится поиск). Каждый тест происходит с чистой установки приложения.
+В случае тестирования сервера на него поочередно отправляются команды, описанные в API и ожидаются определенные корректные ответы.
+Сервер и приложение тестируются независимо.
+
+
--- a/app/.gitignore
+++ b/app/.gitignore
@ -0,0 +1 @@
+/build
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@ -0,0 +1,69 @@
+plugins {
+    kotlinAndroid
+    androidApplication
+    jetbrainsKotlinSerialization version Version.Kotlin.language
+    kotlinAnnotationProcessor
+    id("com.google.dagger.hilt.android").version("2.51.1")
+}
+
+val packageName = "ru.myitschool.work"
+
+android {
+    namespace = packageName
+    compileSdk = Version.Android.Sdk.compile
+
+    defaultConfig {
+        applicationId = packageName
+        minSdk = Version.Android.Sdk.min
+        targetSdk = Version.Android.Sdk.target
+        versionCode = 1
+        versionName = "1.0"
+
+        testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildFeatures.viewBinding = true
+
+    compileOptions {
+        sourceCompatibility = Version.Kotlin.javaSource
+        targetCompatibility = Version.Kotlin.javaSource
+    }
+
+    kotlinOptions {
+        jvmTarget = Version.Kotlin.jvmTarget
+    }
+}
+
+dependencies {
+    defaultLibrary()
+
+    implementation(Dependencies.AndroidX.activity)
+    implementation(Dependencies.AndroidX.fragment)
+    implementation(Dependencies.AndroidX.constraintLayout)
+
+    implementation(Dependencies.AndroidX.Navigation.fragment)
+    implementation(Dependencies.AndroidX.Navigation.navigationUi)
+
+    implementation(Dependencies.Retrofit.library)
+    implementation(Dependencies.Retrofit.gsonConverter)
+
+    implementation("com.squareup.picasso:picasso:2.8")
+    implementation("org.jetbrains.kotlinx:kotlinx-serialization-json:1.7.1")
+    implementation("androidx.datastore:datastore-preferences:1.1.1")
+    implementation("com.google.mlkit:barcode-scanning:17.3.0")
+
+    val cameraX = "1.3.4"
+    implementation("androidx.camera:camera-core:$cameraX")
+    implementation("androidx.camera:camera-camera2:$cameraX")
+    implementation("androidx.camera:camera-lifecycle:$cameraX")
+    implementation("androidx.camera:camera-view:$cameraX")
+    implementation("androidx.camera:camera-mlkit-vision:1.4.0-rc04")
+
+    val hilt = "2.51.1"
+    implementation("com.google.dagger:hilt-android:$hilt")
+    kapt("com.google.dagger:hilt-android-compiler:$hilt")
+}
+
+kapt {
+    correctErrorTypes = true
+}
--- a/app/proguard-rules.pro
+++ b/app/proguard-rules.pro
@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <uses-feature android:name="android.hardware.camera.any" />
+
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+        android:name=".App"
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:networkSecurityConfig="@xml/network_security_config"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Default"
+        tools:targetApi="31">
+        <activity
+            android:name=".ui.RootActivity"
+            android:windowSoftInputMode="adjustResize"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
--- a/app/src/main/java/ru/myitschool/work/App.kt
+++ b/app/src/main/java/ru/myitschool/work/App.kt
@ -0,0 +1,9 @@
+package ru.myitschool.work
+
+import android.app.Application
+import dagger.hilt.android.HiltAndroidApp
+
+@HiltAndroidApp
+class App : Application() {
+
+}
--- a/app/src/main/java/ru/myitschool/work/MainActivity.kt
+++ b/app/src/main/java/ru/myitschool/work/MainActivity.kt
@ -0,0 +1,18 @@
+package ru.myitschool.work
+
+import android.os.Bundle
+import android.widget.Button
+import androidx.activity.ComponentActivity
+import androidx.appcompat.app.AppCompatActivity
+import dagger.hilt.android.AndroidEntryPoint
+
+//@AndroidEntryPoint
+//class MainActivity  : ComponentActivity() {
+//
+//    override fun onCreate(savedInstanceState: Bundle?) {
+//        super.onCreate(savedInstanceState)
+//
+//        val button: Button = findViewById(R.id.login)
+//    }
+//
+//}
--- a/app/src/main/java/ru/myitschool/work/core/Constants.kt
+++ b/app/src/main/java/ru/myitschool/work/core/Constants.kt
@ -0,0 +1,6 @@
+package ru.myitschool.work.core
+// БЕРИТЕ И ИЗМЕНЯЙТЕ ХОСТ ТОЛЬКО ЗДЕСЬ И НЕ БЕРИТЕ ИЗ ДРУГИХ МЕСТ. ФАЙЛ ПЕРЕМЕЩАТЬ НЕЛЬЗЯ
+object Constants {
+    const val SERVER_ADDRESS = "http://localhost:8090/api/"
+    //const val SERVER_ADDRESS = "http://192.168.1.73:8080/api/"
+}
--- a/app/src/main/java/ru/myitschool/work/data/remote/ErrorDto.kt
+++ b/app/src/main/java/ru/myitschool/work/data/remote/ErrorDto.kt
@ -0,0 +1,8 @@
+package ru.myitschool.work.data.remote
+
+data class ErrorDto(
+  val timestamp: String,
+  val status: Long,
+  val error: String,
+  val path: String,
+)
--- a/app/src/main/java/ru/myitschool/work/data/remote/LoginApi.kt
+++ b/app/src/main/java/ru/myitschool/work/data/remote/LoginApi.kt
@ -0,0 +1,19 @@
+package ru.myitschool.work.data.remote
+
+import okhttp3.ResponseBody
+import retrofit2.Response
+import retrofit2.http.Body
+import retrofit2.http.GET
+import retrofit2.http.PATCH
+import retrofit2.http.Path
+
+interface LoginApi {
+  @GET("{login}/auth")
+  suspend fun auth(@Path("login") login: String): Response<ResponseBody>
+
+  @GET("{login}/info")
+  suspend fun info(@Path("login") login: String): PersonInfoDto
+
+  @PATCH("{login}/open")
+  suspend fun open(@Path("login") login: String, @Body request: OpenWithCodeRequest): Response<ResponseBody>
+}
--- a/app/src/main/java/ru/myitschool/work/data/remote/OpenWithCodeRequest.kt
+++ b/app/src/main/java/ru/myitschool/work/data/remote/OpenWithCodeRequest.kt
@ -0,0 +1,5 @@
+package ru.myitschool.work.data.remote
+
+data class OpenWithCodeRequest(
+  val value: Long
+)
--- a/app/src/main/java/ru/myitschool/work/data/remote/PersonInfoDto.kt
+++ b/app/src/main/java/ru/myitschool/work/data/remote/PersonInfoDto.kt
@ -0,0 +1,10 @@
+package ru.myitschool.work.data.remote
+
+data class PersonInfoDto(
+  val id: Long,
+  val login: String,
+  val name: String,
+  val photo: String,
+  val position: String,
+  val lastVisit: String,
+)
--- a/app/src/main/java/ru/myitschool/work/di/AppModule.kt
+++ b/app/src/main/java/ru/myitschool/work/di/AppModule.kt
@ -0,0 +1,47 @@
+package ru.myitschool.work.di
+
+import android.content.Context
+import androidx.datastore.preferences.core.edit
+import androidx.datastore.preferences.core.stringPreferencesKey
+import androidx.datastore.preferences.preferencesDataStore
+import dagger.Module
+import dagger.Provides
+import dagger.hilt.InstallIn
+import dagger.hilt.android.qualifiers.ApplicationContext
+import dagger.hilt.components.SingletonComponent
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.map
+import retrofit2.Retrofit
+import retrofit2.converter.gson.GsonConverterFactory
+import ru.myitschool.work.core.Constants
+import ru.myitschool.work.data.remote.LoginApi
+import javax.inject.Inject
+import javax.inject.Singleton
+
+@Module
+@InstallIn(SingletonComponent::class)
+object AppModule {
+  @Provides
+  @Singleton
+  fun provideHttpClient() = Retrofit.Builder()
+    .baseUrl(Constants.SERVER_ADDRESS)
+    .addConverterFactory(GsonConverterFactory.create())
+    .build()
+
+  @Provides
+  @Singleton
+  fun provideLoginApi(retrofit: Retrofit) = retrofit.create(LoginApi::class.java)
+
+  private val Context.dataStore by preferencesDataStore("settings")
+
+  @Singleton
+  class DataStoreManager @Inject constructor(@ApplicationContext appContext: Context) {
+    private val settingsDataStore = appContext.dataStore
+    private val lastUsernameKey = stringPreferencesKey("last_username")
+    val lastUsername: Flow<String>
+      get() = settingsDataStore.data.map { it[lastUsernameKey].orEmpty() }
+
+    suspend fun setLastUsername(username: String) =
+      settingsDataStore.edit { it[lastUsernameKey] = username }
+  }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/RootActivity.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/RootActivity.kt
@ -0,0 +1,68 @@
+package ru.myitschool.work.ui
+
+import android.os.Bundle
+import androidx.activity.OnBackPressedCallback
+import androidx.appcompat.app.AppCompatActivity
+import androidx.navigation.createGraph
+import androidx.navigation.findNavController
+import androidx.navigation.fragment.NavHostFragment
+import androidx.navigation.fragment.fragment
+import dagger.hilt.android.AndroidEntryPoint
+import ru.myitschool.work.R
+import ru.myitschool.work.ui.login.LoginDestination
+import ru.myitschool.work.ui.login.LoginFragment
+import ru.myitschool.work.ui.main.MainDestination
+import ru.myitschool.work.ui.main.MainFragment
+import ru.myitschool.work.ui.qr.result.QrResultDestination
+import ru.myitschool.work.ui.qr.result.QrResultFragment
+import ru.myitschool.work.ui.qr.scan.QrScanDestination
+import ru.myitschool.work.ui.qr.scan.QrScanFragment
+import java.text.SimpleDateFormat
+import java.time.LocalDate
+import java.time.LocalDateTime
+import java.time.ZonedDateTime
+import java.time.format.DateTimeFormatter
+
+// НЕ ИЗМЕНЯЙТЕ НАЗВАНИЕ КЛАССА!
+@AndroidEntryPoint
+class RootActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_root)
+
+
+        val navHostFragment = supportFragmentManager
+            .findFragmentById(R.id.nav_host_fragment) as NavHostFragment?
+
+        if (navHostFragment != null) {
+            val navController = navHostFragment.navController
+            navController.graph = navController.createGraph(
+                startDestination = LoginDestination
+            ) {
+                fragment<LoginFragment, LoginDestination>()
+                fragment<QrScanFragment, QrScanDestination>()
+                fragment<MainFragment, MainDestination>()
+                fragment<QrResultFragment, QrResultDestination>()
+            }
+        }
+
+        onBackPressedDispatcher.addCallback(
+            this,
+            object : OnBackPressedCallback(true) {
+                override fun handleOnBackPressed() {
+                    onSupportNavigateUp()
+                }
+            }
+        )
+    }
+
+    override fun onSupportNavigateUp(): Boolean {
+        val navController = findNavController(R.id.nav_host_fragment)
+        val popBackResult = if (navController.previousBackStackEntry != null) {
+            navController.popBackStack()
+        } else {
+            false
+        }
+        return popBackResult || super.onSupportNavigateUp()
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/login/LoginDestination.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/login/LoginDestination.kt
@ -0,0 +1,6 @@
+package ru.myitschool.work.ui.login
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data object LoginDestination
--- a/app/src/main/java/ru/myitschool/work/ui/login/LoginFragment.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/login/LoginFragment.kt
@ -0,0 +1,64 @@
+package ru.myitschool.work.ui.login
+
+import android.os.Bundle
+import android.view.View
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import androidx.navigation.fragment.findNavController
+import dagger.hilt.android.AndroidEntryPoint
+import ru.myitschool.work.R
+import ru.myitschool.work.databinding.FragmentLoginBinding
+import ru.myitschool.work.ui.main.MainDestination
+import ru.myitschool.work.utils.collectWhenStarted
+import ru.myitschool.work.utils.TextChangedListener
+
+@AndroidEntryPoint
+class LoginFragment : Fragment(R.layout.fragment_login) {
+    private var _binding: FragmentLoginBinding? = null
+    private val binding: FragmentLoginBinding get() = _binding!!
+
+    private val viewModel: LoginViewModel by viewModels()
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        _binding = FragmentLoginBinding.bind(view)
+
+        binding.username.addTextChangedListener(TextChangedListener { viewModel.onUsernameChanged(it) })
+        subscribe()
+        viewModel.initialize()
+        binding.login.setOnClickListener {
+            login(binding.username.text.toString())
+        }
+    }
+
+    private fun login(username: String) {
+        viewModel.tryLogin(username) {
+            findNavController().apply {
+                popBackStack<LoginDestination>(true)
+                navigate(MainDestination(username))
+            }
+        }
+    }
+
+    private fun subscribe() {
+        viewModel.state.collectWhenStarted(this) { state ->
+            binding.login.isEnabled = state.isLoginEnabled
+            if (state.error != null) {
+                binding.error.visibility = View.VISIBLE
+                binding.error.text = state.error
+            } else {
+                binding.error.visibility = View.GONE
+            }
+        }
+        viewModel.savedUsername.collectWhenStarted(this) { username ->
+            if (!username.isNullOrBlank()) {
+                login(username)
+            }
+        }
+    }
+
+    override fun onDestroyView() {
+        _binding = null
+        super.onDestroyView()
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/login/LoginState.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/login/LoginState.kt
@ -0,0 +1,5 @@
+package ru.myitschool.work.ui.login
+
+data class LoginState(
+  val isLoginEnabled: Boolean = false, val error: String? = null
+)
--- a/app/src/main/java/ru/myitschool/work/ui/login/LoginViewModel.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/login/LoginViewModel.kt
@ -0,0 +1,89 @@
+package ru.myitschool.work.ui.login
+
+import android.content.Context
+import android.util.Log
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.google.gson.GsonBuilder
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import retrofit2.HttpException
+import ru.myitschool.work.data.remote.LoginApi
+import ru.myitschool.work.data.remote.ErrorDto
+import ru.myitschool.work.di.AppModule
+import javax.inject.Inject
+
+@HiltViewModel
+class LoginViewModel @Inject constructor(
+    @ApplicationContext private val context: Context,
+    private val api: LoginApi,
+    private val dataStoreManager: AppModule.DataStoreManager
+) : ViewModel() {
+    private val _state = MutableStateFlow(LoginState())
+    val state = _state.asStateFlow()
+
+    private val _savedUsername = MutableStateFlow<String?>(null)
+    val savedUsername = _savedUsername.asStateFlow()
+
+    fun initialize() {
+        viewModelScope.launch {
+            dataStoreManager.lastUsername.distinctUntilChanged().collect { lastUsername ->
+                if (lastUsername.isNotEmpty()) {
+                    _savedUsername.update { lastUsername }
+                } else {
+                    _savedUsername.update { null }
+                    _state.update { LoginState() }
+                }
+            }
+        }
+    }
+
+    fun tryLogin(username: String, onSuccess: () -> Unit) {
+        viewModelScope.launch {
+            try {
+                val resp = api.auth(username)
+                if (resp.code() != 200) {
+                    throw HttpException(resp)
+                }
+                Log.d("LoginViewModel", "Login success for $username")
+                dataStoreManager.setLastUsername(username)
+                onSuccess()
+            } catch (httpExc: HttpException) {
+                Log.e("LoginViewModel", "Login failed for $username", httpExc)
+                try {
+                    httpExc.response()?.errorBody()?.string()?.let { errorString ->
+                        val gson = GsonBuilder().create()
+                        val errorDto = gson.fromJson(errorString, ErrorDto::class.java)
+                        _state.update { it.copy(error = errorDto.error) }
+                    }
+                } catch (e: Exception) {
+                    _state.update { it.copy(error = httpExc.message()) }
+                }
+            } catch (e: Exception) {
+                Log.e("LoginViewModel", "Login failed for $username", e)
+               _state.update { it.copy(error = "Unknown error: ${e.message}") }
+            }
+        }
+    }
+
+    fun onUsernameChanged(username: String) =
+        _state.update { it.copy(isLoginEnabled = isUsernameValid(username), error = null) }
+
+    companion object {
+        fun isUsernameValid(username: String): Boolean {
+            if (username.isEmpty() || username.length < 3 || username.first().isDigit()) {
+                return false
+            }
+            return username.all { it.isLetterOrDigit() && it.isAsciiPrintable() }
+        }
+
+        private fun Char.isAsciiPrintable(): Boolean {
+            return this.code in 32..126
+        }
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/main/MainDestination.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/main/MainDestination.kt
@ -0,0 +1,6 @@
+package ru.myitschool.work.ui.main
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class MainDestination(val username: String)
--- a/app/src/main/java/ru/myitschool/work/ui/main/MainFragment.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/main/MainFragment.kt
@ -0,0 +1,68 @@
+package ru.myitschool.work.ui.main
+
+import android.os.Bundle
+import android.view.View
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import androidx.navigation.fragment.findNavController
+import androidx.navigation.toRoute
+import com.squareup.picasso.Picasso
+import dagger.hilt.android.AndroidEntryPoint
+import ru.myitschool.work.R
+import ru.myitschool.work.databinding.FragmentMainBinding
+import ru.myitschool.work.ui.login.LoginDestination
+import ru.myitschool.work.ui.qr.result.QrResultDestination
+import ru.myitschool.work.ui.qr.scan.QrScanDestination
+import ru.myitschool.work.utils.collectWhenStarted
+
+@AndroidEntryPoint
+class MainFragment: Fragment(R.layout.fragment_main) {
+  private var _binding: FragmentMainBinding? = null
+  private val binding: FragmentMainBinding get() = _binding!!
+  private val viewModel: MainViewModel by viewModels()
+  private val picasso: Picasso by lazy { Picasso.get() }
+
+  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+    super.onViewCreated(view, savedInstanceState)
+    _binding = FragmentMainBinding.bind(view)
+
+    val username = findNavController().currentBackStackEntry?.toRoute<MainDestination>()?.username
+    username?.let { user ->
+      viewModel.loadPersonInfo(user)
+      binding.refresh.setOnClickListener { viewModel.loadPersonInfo(user) }
+      binding.logout.setOnClickListener {
+        viewModel.logout {
+          findNavController().apply {
+            popBackStack<MainDestination>(true)
+            navigate(LoginDestination)
+          }
+        }
+      }
+      binding.scan.setOnClickListener {
+        findNavController().navigate(QrResultDestination(user))
+        findNavController().navigate(QrScanDestination)
+      }
+    }
+    subscribe()
+  }
+
+  private fun subscribe() {
+    viewModel.state.collectWhenStarted(this) { state ->
+      if (state.photo.isNotEmpty()) {
+        picasso.load(state.photo).into(binding.photo)
+      }
+      binding.fullname.text = state.fullName
+      binding.position.text = state.position
+      binding.lastEntry.text = state.lastVisit
+      setError(state.error)
+    }
+  }
+
+  private fun setError(error: String?) {
+    val showError = error != null
+    val views = listOf(binding.fullname, binding.position, binding.lastEntry, binding.photo, binding.scan, binding.logout)
+    views.forEach { it.visibility = if (showError) View.GONE else View.VISIBLE}
+    binding.error.visibility = if (showError) View.VISIBLE else View.GONE
+    binding.error.text = error ?: ""
+  }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/main/MainState.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/main/MainState.kt
@ -0,0 +1,9 @@
+package ru.myitschool.work.ui.main
+
+data class MainState(
+  val fullName: String = "",
+  val photo: String = "",
+  val position: String = "",
+  val lastVisit: String = "",
+  val error: String? = null
+)
--- a/app/src/main/java/ru/myitschool/work/ui/main/MainViewModel.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/main/MainViewModel.kt
@ -0,0 +1,73 @@
+package ru.myitschool.work.ui.main
+
+import android.content.Context
+import android.util.Log
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.google.gson.GsonBuilder
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.distinctUntilChanged
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import retrofit2.HttpException
+import ru.myitschool.work.data.remote.LoginApi
+import ru.myitschool.work.data.remote.ErrorDto
+import ru.myitschool.work.di.AppModule
+import java.text.SimpleDateFormat
+import javax.inject.Inject
+
+@HiltViewModel
+class MainViewModel @Inject constructor(
+  @ApplicationContext private val context: Context,
+  private val api: LoginApi,
+  private val dataStoreManager: AppModule.DataStoreManager
+) : ViewModel() {
+  private val _state = MutableStateFlow(MainState())
+  val state = _state.asStateFlow()
+
+  private val dfo = SimpleDateFormat("yyyy-MM-dd HH:mm")
+  private val dfi= SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss")
+
+  fun loadPersonInfo(username: String) {
+    viewModelScope.launch {
+      try {
+        val info = api.info(username)
+        _state.update {
+          MainState(
+            fullName = info.name,
+            photo = info.photo,
+            position = info.position,
+            lastVisit = dfo.format(dfi.parse(info.lastVisit)!!),
+            error = null
+          )
+        }
+      } catch (httpException: HttpException) {
+        try {
+          httpException.response()?.errorBody()?.string()?.let { errorString ->
+            val gson = GsonBuilder().create()
+            val errorDto = gson.fromJson(errorString, ErrorDto::class.java)
+            _state.update {
+              MainState(
+                error = errorDto.error
+              )
+            }
+          }
+        } catch (e: Exception) {
+          _state.update { MainState(error = httpException.message()) }
+        }
+      } catch (e: Exception) {
+        _state.update { MainState(error = "Unknown error: ${e.message}") }
+      }
+    }
+  }
+
+  fun logout(onLogout: () -> Unit) {
+    viewModelScope.launch {
+      dataStoreManager.setLastUsername("")
+      onLogout()
+    }
+  }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultDestination.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultDestination.kt
@ -0,0 +1,6 @@
+package ru.myitschool.work.ui.qr.result
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class QrResultDestination(val username: String)
--- a/app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultFragment.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultFragment.kt
@ -0,0 +1,47 @@
+package ru.myitschool.work.ui.qr.result
+
+import android.os.Bundle
+import android.view.View
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.viewModels
+import androidx.navigation.fragment.findNavController
+import androidx.navigation.toRoute
+import dagger.hilt.android.AndroidEntryPoint
+import ru.myitschool.work.R
+import ru.myitschool.work.databinding.FragmentQrResultBinding
+import ru.myitschool.work.ui.main.MainDestination
+import ru.myitschool.work.ui.qr.scan.QrScanDestination
+import ru.myitschool.work.utils.collectWhenStarted
+
+@AndroidEntryPoint
+class QrResultFragment: Fragment(R.layout.fragment_qr_result) {
+  private var _binding: FragmentQrResultBinding? = null
+  private val binding: FragmentQrResultBinding get() = _binding!!
+
+  private val viewModel: QrResultViewModel by viewModels()
+
+  override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+    super.onViewCreated(view, savedInstanceState)
+    _binding = FragmentQrResultBinding.bind(view)
+    subscribe()
+    binding.close.setOnClickListener { findNavController().navigateUp() }
+
+    findNavController().currentBackStackEntry?.savedStateHandle?.let {
+      val data = it.get<Bundle>(QrScanDestination.REQUEST_KEY)?.getString("key_qr")
+      val username = findNavController().currentBackStackEntry?.toRoute<MainDestination>()?.username
+      username?.let { user ->
+        viewModel.tryParseData(user, data)
+      }
+    }
+  }
+
+  private fun subscribe() {
+    viewModel.result.collectWhenStarted(this) { data ->
+      binding.result.setText(when (data) {
+        QrResultViewModel.QrResultSource.SUCCESS -> R.string.success_result
+        QrResultViewModel.QrResultSource.FAILURE -> R.string.failure_result
+        QrResultViewModel.QrResultSource.CANCEL -> R.string.cancel_result
+      })
+    }
+  }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultViewModel.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/result/QrResultViewModel.kt
@ -0,0 +1,45 @@
+package ru.myitschool.work.ui.qr.result
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import dagger.hilt.android.lifecycle.HiltViewModel
+import dagger.hilt.android.qualifiers.ApplicationContext
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import retrofit2.HttpException
+import ru.myitschool.work.data.remote.LoginApi
+import ru.myitschool.work.data.remote.OpenWithCodeRequest
+import javax.inject.Inject
+
+@HiltViewModel
+class QrResultViewModel @Inject constructor(
+  @ApplicationContext private val context: Context,
+  private val api: LoginApi
+): ViewModel() {
+  enum class QrResultSource { SUCCESS, FAILURE, CANCEL }
+
+  private val _result = MutableStateFlow(QrResultSource.CANCEL)
+  val result = _result.asStateFlow()
+
+  fun tryParseData(username: String, data: String?) {
+    viewModelScope.launch {
+      if (data == null) {
+        _result.update {
+          QrResultSource.CANCEL
+        }
+      } else {
+        try {
+          api.open(username, OpenWithCodeRequest(data.toLong()))
+          _result.update { QrResultSource.SUCCESS }
+        } catch (e: HttpException) {
+          e.response()?.errorBody()?.string()?.let { errorString ->
+            _result.update { QrResultSource.FAILURE }
+          }
+        }
+      }
+    }
+  }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/qr/scan/QrScanDestination.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/scan/QrScanDestination.kt
@ -0,0 +1,30 @@
+package ru.myitschool.work.ui.qr.scan
+
+import android.os.Bundle
+import androidx.core.os.bundleOf
+import kotlinx.serialization.Serializable
+
+// НЕ ИЗМЕНЯЙТЕ ЭТОТ ФАЙЛ. В ТЕСТАХ ОН БУДЕМ ВОЗВРАЩЁН В ИСХОДНОЕ СОСТОЯНИЕ
+@Serializable
+data object QrScanDestination {
+    const val REQUEST_KEY = "qr_result"
+    private const val KEY_QR_DATA = "key_qr"
+
+    fun newInstance(): QrScanFragment {
+        return QrScanFragment()
+    }
+
+    fun getDataIfExist(bundle: Bundle): String? {
+        return if (bundle.containsKey(KEY_QR_DATA)) {
+            bundle.getString(KEY_QR_DATA)
+        } else {
+            null
+        }
+    }
+
+    internal fun packToBundle(data: String): Bundle {
+        return bundleOf(
+            KEY_QR_DATA to data
+        )
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/qr/scan/QrScanFragment.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/scan/QrScanFragment.kt
@ -0,0 +1,139 @@
+package ru.myitschool.work.ui.qr.scan
+
+import android.os.Bundle
+import android.view.View
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.camera.core.ImageAnalysis
+import androidx.camera.mlkit.vision.MlKitAnalyzer
+import androidx.camera.view.LifecycleCameraController
+import androidx.camera.view.PreviewView
+import androidx.core.content.ContextCompat
+import androidx.core.os.bundleOf
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.setFragmentResult
+import androidx.fragment.app.viewModels
+import androidx.navigation.NavController
+import androidx.navigation.fragment.findNavController
+import com.google.mlkit.vision.barcode.BarcodeScanner
+import com.google.mlkit.vision.barcode.BarcodeScannerOptions
+import com.google.mlkit.vision.barcode.BarcodeScanning
+import com.google.mlkit.vision.barcode.common.Barcode
+import ru.myitschool.work.R
+import ru.myitschool.work.databinding.FragmentQrScanBinding
+import ru.myitschool.work.utils.collectWhenStarted
+import ru.myitschool.work.utils.visibleOrGone
+
+// НЕ ИЗМЕНЯЙТЕ ЭТОТ ФАЙЛ. В ТЕСТАХ ОН БУДЕМ ВОЗВРАЩЁН В ИСХОДНОЕ СОСТОЯНИЕ
+class QrScanFragment : Fragment(R.layout.fragment_qr_scan) {
+    private var _binding: FragmentQrScanBinding? = null
+    private val binding: FragmentQrScanBinding get() = _binding!!
+
+    private var barcodeScanner: BarcodeScanner? = null
+    private var isCameraInit: Boolean = false
+    private val permissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { isGranted -> viewModel.onPermissionResult(isGranted) }
+
+    private val viewModel: QrScanViewModel by viewModels()
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        _binding = FragmentQrScanBinding.bind(view)
+        sendResult(bundleOf())
+        subscribe()
+        initCallback()
+    }
+
+    private fun initCallback() {
+        binding.close.setOnClickListener { viewModel.close() }
+    }
+
+    private fun subscribe() {
+        viewModel.state.collectWhenStarted(this) { state ->
+            binding.loading.visibleOrGone(state is QrScanViewModel.State.Loading)
+            binding.viewFinder.visibleOrGone(state is QrScanViewModel.State.Scan)
+            if (!isCameraInit && state is QrScanViewModel.State.Scan) {
+                startCamera()
+                isCameraInit = true
+            }
+        }
+
+        viewModel.action.collectWhenStarted(this) { action ->
+            when (action) {
+                is QrScanViewModel.Action.RequestPermission -> requestPermission(action.permission)
+                is QrScanViewModel.Action.CloseWithCancel -> {
+                    goBack()
+                }
+                is QrScanViewModel.Action.CloseWithResult -> {
+                    sendResult(QrScanDestination.packToBundle(action.result))
+                    goBack()
+                }
+            }
+        }
+    }
+
+    private fun requestPermission(permission: String) {
+        permissionLauncher.launch(permission)
+    }
+
+    private fun startCamera() {
+        val context = requireContext()
+        val cameraController = LifecycleCameraController(context)
+        val previewView: PreviewView = binding.viewFinder
+        val executor = ContextCompat.getMainExecutor(context)
+
+        val options = BarcodeScannerOptions.Builder()
+            .setBarcodeFormats(Barcode.FORMAT_QR_CODE)
+            .build()
+        val barcodeScanner = BarcodeScanning.getClient(options)
+        this.barcodeScanner = barcodeScanner
+
+        cameraController.setImageAnalysisAnalyzer(
+            executor,
+            MlKitAnalyzer(
+                listOf(barcodeScanner),
+                ImageAnalysis.COORDINATE_SYSTEM_VIEW_REFERENCED,
+                executor
+            ) { result ->
+                result?.getValue(barcodeScanner)?.firstOrNull()?.let { value ->
+                    viewModel.findBarcode(value)
+
+                }
+            }
+        )
+
+        cameraController.bindToLifecycle(this)
+        previewView.controller = cameraController
+    }
+
+    override fun onDestroyView() {
+        barcodeScanner?.close()
+        barcodeScanner = null
+        _binding = null
+        super.onDestroyView()
+    }
+
+    private fun goBack() {
+        findNavControllerOrNull()?.popBackStack()
+            ?: requireActivity().onBackPressedDispatcher.onBackPressed()
+    }
+
+    private fun sendResult(bundle: Bundle) {
+        setFragmentResult(
+            QrScanDestination.REQUEST_KEY,
+            bundle
+        )
+        findNavControllerOrNull()
+            ?.previousBackStackEntry
+            ?.savedStateHandle
+            ?.set(QrScanDestination.REQUEST_KEY, bundle)
+    }
+
+    private fun findNavControllerOrNull(): NavController? {
+        return try {
+            findNavController()
+        } catch (_: Throwable) {
+            null
+        }
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/qr/scan/QrScanViewModel.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/scan/QrScanViewModel.kt
@ -0,0 +1,93 @@
+package ru.myitschool.work.ui.qr.scan
+
+import android.Manifest
+import android.app.Application
+import android.content.pm.PackageManager
+import androidx.core.content.ContextCompat
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.viewModelScope
+import com.google.mlkit.vision.barcode.common.Barcode
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asSharedFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import ru.myitschool.work.utils.MutablePublishFlow
+
+// НЕ ИЗМЕНЯЙТЕ ЭТОТ ФАЙЛ. В ТЕСТАХ ОН БУДЕМ ВОЗВРАЩЁН В ИСХОДНОЕ СОСТОЯНИЕ
+class QrScanViewModel(
+    application: Application
+) : AndroidViewModel(application) {
+
+    private val _action = MutablePublishFlow<Action>()
+    val action = _action.asSharedFlow()
+
+    private val _state = MutableStateFlow<State>(initialState)
+    val state = _state.asStateFlow()
+
+    init {
+        checkPermission()
+    }
+
+    fun onPermissionResult(isGranted: Boolean) {
+        viewModelScope.launch {
+            if (isGranted) {
+                _state.update { State.Scan }
+            } else {
+                _action.emit(Action.CloseWithCancel)
+            }
+        }
+    }
+
+    private fun checkPermission() {
+        viewModelScope.launch {
+            val isPermissionGranted = ContextCompat.checkSelfPermission(
+                getApplication(),
+                CAMERA_PERMISSION
+            ) == PackageManager.PERMISSION_GRANTED
+            if (isPermissionGranted) {
+                _state.update { State.Scan }
+            } else {
+                delay(1000)
+                _action.emit(Action.RequestPermission(CAMERA_PERMISSION))
+            }
+        }
+    }
+
+    fun findBarcode(barcode: Barcode) {
+        viewModelScope.launch {
+            barcode.rawValue?.let { value ->
+                _action.emit(Action.CloseWithResult(value))
+            }
+        }
+    }
+
+    fun close() {
+        viewModelScope.launch {
+            _action.emit(Action.CloseWithCancel)
+        }
+    }
+
+    sealed interface State {
+        data object Loading : State
+
+        data object Scan : State
+    }
+
+    sealed interface Action {
+        data class RequestPermission(
+            val permission: String
+        ) : Action
+        data object CloseWithCancel : Action
+        data class CloseWithResult(
+            val result: String
+        ) : Action
+    }
+
+    private companion object {
+        val initialState = State.Loading
+
+        const val CAMERA_PERMISSION = Manifest.permission.CAMERA
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/utils/FlowExtensions.kt
+++ b/app/src/main/java/ru/myitschool/work/utils/FlowExtensions.kt
@ -0,0 +1,10 @@
+package ru.myitschool.work.utils
+
+import kotlinx.coroutines.channels.BufferOverflow
+import kotlinx.coroutines.flow.MutableSharedFlow
+
+fun <T> MutablePublishFlow() = MutableSharedFlow<T>(
+    replay = 0,
+    extraBufferCapacity = 1,
+    BufferOverflow.DROP_OLDEST
+)
--- a/app/src/main/java/ru/myitschool/work/utils/FragmentExtesions.kt
+++ b/app/src/main/java/ru/myitschool/work/utils/FragmentExtesions.kt
@ -0,0 +1,18 @@
+package ru.myitschool.work.utils
+
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.flowWithLifecycle
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.launch
+
+inline fun <T> Flow<T>.collectWhenStarted(
+    fragment: Fragment,
+    crossinline collector: (T) -> Unit
+) {
+    fragment.viewLifecycleOwner.lifecycleScope.launch {
+        flowWithLifecycle(fragment.viewLifecycleOwner.lifecycle).collect { value ->
+            collector.invoke(value)
+        }
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/utils/TextChangedListener.kt
+++ b/app/src/main/java/ru/myitschool/work/utils/TextChangedListener.kt
@ -0,0 +1,17 @@
+package ru.myitschool.work.utils
+
+import android.annotation.SuppressLint
+import android.text.Editable
+import android.text.TextWatcher
+import android.view.View
+import ru.myitschool.work.databinding.FragmentLoginBinding
+
+class TextChangedListener(private val onChange: (String) -> Unit) :
+  TextWatcher {
+    override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) = Unit
+
+    override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) =
+        onChange(s?.toString().orEmpty())
+
+    override fun afterTextChanged(s: Editable?) = Unit
+}
--- a/app/src/main/java/ru/myitschool/work/utils/ViewExtensions.kt
+++ b/app/src/main/java/ru/myitschool/work/utils/ViewExtensions.kt
@ -0,0 +1,7 @@
+package ru.myitschool.work.utils
+
+import android.view.View
+
+fun View.visibleOrGone(isVisible: Boolean) {
+    this.visibility = if (isVisible) View.VISIBLE else View.GONE
+}
--- a/app/src/main/res/drawable/ic_close.xml
+++ b/app/src/main/res/drawable/ic_close.xml
@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M19,6.41L17.59,5 12,10.59 6.41,5 5,6.41 10.59,12 5,17.59 6.41,19 12,13.41 17.59,19 19,17.59 13.41,12z"/>
+    
+</vector>
--- a/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
--- a/app/src/main/res/drawable/ic_launcher_foreground.xml
+++ b/app/src/main/res/drawable/ic_launcher_foreground.xml
@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
--- a/app/src/main/res/drawable/ic_logout.xml
+++ b/app/src/main/res/drawable/ic_logout.xml
@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:autoMirrored="true" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17,7l-1.41,1.41L18.17,11H8v2h10.17l-2.58,2.58L17,17l5,-5zM4,5h8V3H4c-1.1,0 -2,0.9 -2,2v14c0,1.1 0.9,2 2,2h8v-2H4V5z"/>
+    
+</vector>
--- a/app/src/main/res/drawable/ic_no_img.xml
+++ b/app/src/main/res/drawable/ic_no_img.xml
@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M21.9,21.9l-8.49,-8.49l0,0L3.59,3.59l0,0L2.1,2.1L0.69,3.51L3,5.83V19c0,1.1 0.9,2 2,2h13.17l2.31,2.31L21.9,21.9zM5,18l3.5,-4.5l2.5,3.01L12.17,15l3,3H5zM21,18.17L5.83,3H19c1.1,0 2,0.9 2,2V18.17z"/>
+    
+</vector>
--- a/app/src/main/res/drawable/ic_qr_code.xml
+++ b/app/src/main/res/drawable/ic_qr_code.xml
@ -0,0 +1,25 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M3,11h8V3H3V11zM5,5h4v4H5V5z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M3,21h8v-8H3V21zM5,15h4v4H5V15z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M13,3v8h8V3H13zM19,9h-4V5h4V9z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M19,19h2v2h-2z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M13,13h2v2h-2z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M15,15h2v2h-2z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M13,17h2v2h-2z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M15,19h2v2h-2z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17,17h2v2h-2z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17,13h2v2h-2z"/>
+      
+    <path android:fillColor="@android:color/white" android:pathData="M19,15h2v2h-2z"/>
+    
+</vector>
--- a/app/src/main/res/drawable/ic_refresh.xml
+++ b/app/src/main/res/drawable/ic_refresh.xml
@ -0,0 +1,5 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android" android:height="24dp" android:tint="#000000" android:viewportHeight="24" android:viewportWidth="24" android:width="24dp">
+      
+    <path android:fillColor="@android:color/white" android:pathData="M17.65,6.35C16.2,4.9 14.21,4 12,4c-4.42,0 -7.99,3.58 -7.99,8s3.57,8 7.99,8c3.73,0 6.84,-2.55 7.73,-6h-2.08c-0.82,2.33 -3.04,4 -5.65,4 -3.31,0 -6,-2.69 -6,-6s2.69,-6 6,-6c1.66,0 3.14,0.69 4.22,1.78L13,11h7V4l-2.35,2.35z"/>
+    
+</vector>
--- a/app/src/main/res/layout/activity_root.xml
+++ b/app/src/main/res/layout/activity_root.xml
@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/nav_host_fragment"
+        android:name="androidx.navigation.fragment.NavHostFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:defaultNavHost="true" />
+
+</FrameLayout>
--- a/app/src/main/res/layout/fragment_login.xml
+++ b/app/src/main/res/layout/fragment_login.xml
@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <EditText
+        android:id="@+id/username"
+        android:layout_width="match_parent"
+        android:layout_height="96dp"
+        android:layout_marginTop="16dp"
+        android:autofillHints=""
+        android:ems="16"
+        android:hint="@string/username_label"
+        android:inputType="text"
+        android:visibility="visible" />
+
+    <Button
+        android:id="@+id/login"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="16dp"
+        android:enabled="false"
+        android:text="@string/login_button" />
+
+    <TextView
+        android:id="@+id/error"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        android:layout_marginTop="16dp"
+        android:textAlignment="center"
+        android:visibility="gone" />
+
+</LinearLayout>
--- a/app/src/main/res/layout/fragment_main.xml
+++ b/app/src/main/res/layout/fragment_main.xml
@ -0,0 +1,85 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/fullname"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="TextView"
+        android:textSize="24sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <ImageView
+        android:id="@+id/photo"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/fullname"
+        tools:srcCompat="@tools:sample/avatars" />
+
+    <TextView
+        android:id="@+id/position"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="TextView"
+        android:textSize="20sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/photo" />
+
+    <TextView
+        android:id="@+id/lastEntry"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="TextView"
+        android:textSize="20sp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/position" />
+
+    <Button
+        android:id="@+id/logout"
+        android:layout_width="256dp"
+        android:layout_height="48dp"
+        android:text="LOGOUT"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/lastEntry" />
+
+    <Button
+        android:id="@+id/refresh"
+        android:layout_width="256dp"
+        android:layout_height="48dp"
+        android:text="Refresh"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/logout" />
+
+    <Button
+        android:id="@+id/scan"
+        android:layout_width="256dp"
+        android:layout_height="48dp"
+        android:layout_weight="10"
+        android:text="Scan QR"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/refresh" />
+
+    <TextView
+        android:id="@+id/error"
+        android:layout_width="256dp"
+        android:layout_height="48dp"
+        android:text="TextView"
+        android:textAlignment="center"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/scan" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/fragment_qr_result.xml
+++ b/app/src/main/res/layout/fragment_qr_result.xml
@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/result"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="256dp"
+        android:text="TextView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/close"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:text="Back"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/result" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/layout/fragment_qr_scan.xml
+++ b/app/src/main/res/layout/fragment_qr_scan.xml
@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.camera.view.PreviewView
+        android:id="@+id/viewFinder"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <ProgressBar
+        android:id="@+id/loading"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+        android:id="@+id/close"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp"
+        android:contentDescription="@string/close_button"
+        android:src="@drawable/ic_close"
+        app:elevation="0dp"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
--- a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+    <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
--- a/app/src/main/res/mipmap-hdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-hdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-mdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-mdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
--- a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
+++ b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
--- a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
+++ b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources></resources>
--- a/app/src/main/res/values-ru/strings_qr.xml
+++ b/app/src/main/res/values-ru/strings_qr.xml
@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="close_button">Закрыть</string>
+    <string name="login_button">Войти</string>
+    <string name="username_label">Логин</string>
+    <string name="cancel_result">Вход был отменён</string>
+    <string name="success_result">Успешно</string>
+    <string name="failure_result">Что-то пошло не так</string>
+</resources>
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
--- a/app/src/main/res/values/ids.xml
+++ b/app/src/main/res/values/ids.xml
@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <item name="rootContainer" type="id"/>
+</resources>
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@ -0,0 +1,5 @@
+<resources>
+    <string name="app_name" translatable="false">NTO Pass</string>
+    <string name="login_button">Login</string>
+    <string name="username_label">Username</string>
+</resources>
--- a/app/src/main/res/values/strings_qr.xml
+++ b/app/src/main/res/values/strings_qr.xml
@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="close_button">Close</string>
+    <string name="cancel_result">Operation was cancelled</string>
+    <string name="success_result">Success</string>
+    <string name="failure_result">Something wrong</string>
+</resources>
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Default" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
--- a/app/src/main/res/xml/backup_rules.xml
+++ b/app/src/main/res/xml/backup_rules.xml
@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
--- a/app/src/main/res/xml/data_extraction_rules.xml
+++ b/app/src/main/res/xml/data_extraction_rules.xml
@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>
--- a/app/src/main/res/xml/network_security_config.xml
+++ b/app/src/main/res/xml/network_security_config.xml
@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<network-security-config>
+    <base-config cleartextTrafficPermitted="true"/>
+</network-security-config>
--- a/build.gradle.kts
+++ b/build.gradle.kts
@ -0,0 +1,7 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+    androidApplication version Version.agp apply false
+    kotlinJvm version Version.Kotlin.language apply false
+    kotlinAnnotationProcessor version Version.Kotlin.language apply false
+    id("com.google.dagger.hilt.android") version "2.51.1" apply false
+}
--- a/gradle.properties
+++ b/gradle.properties
@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true
--- a/234
+++ b/234
@ -0,0 +1,234 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
--- a/gradlew.bat
+++ b/gradlew.bat
@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
--- a/settings.gradle.kts
+++ b/settings.gradle.kts
@ -0,0 +1,17 @@
+pluginManagement {
+    repositories {
+        google()
+        mavenCentral()
+        gradlePluginPortal()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+
+rootProject.name = "Work"
+include(":app")