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2025-02-18 18:26:08 +03:00 · 2025-02-18 18:26:08 +03:00 · 6b2538c7f8
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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 +1,121 @@
+[![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 +1,72 @@
+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 {
+    implementation("androidx.legacy:legacy-support-v4:1.0.0")
+    implementation("androidx.lifecycle:lifecycle-livedata-ktx:2.6.1")
+    implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.6.1")
+    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 +1,33 @@
+<?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: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 +1,7 @@
+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/core/Constants.kt
+++ b/app/src/main/java/ru/myitschool/work/core/Constants.kt
@ -0,0 +1,5 @@
+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://192.168.0.75:8080"
+}
--- a/app/src/main/java/ru/myitschool/work/data/dto/Code.java
+++ b/app/src/main/java/ru/myitschool/work/data/dto/Code.java
@ -0,0 +1,20 @@
+package ru.myitschool.work.data.dto;
+
+public class Code {
+    private long value;
+
+    public Code() {
+    }
+
+    public Code(long value) {
+        this.value = value;
+    }
+
+    public long getValue() {
+        return value;
+    }
+
+    public void setValue(long value) {
+        this.value = value;
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/data/dto/Employee.java
+++ b/app/src/main/java/ru/myitschool/work/data/dto/Employee.java
@ -0,0 +1,34 @@
+package ru.myitschool.work.data.dto;
+
+public class Employee {
+    private long id;
+    private String login;
+    private String name;
+    private String photo;
+    private String position;
+    private String lastVisit;
+
+    public long getId() {
+        return id;
+    }
+
+    public String getLogin() {
+        return login;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getPhoto() {
+        return photo;
+    }
+
+    public String getPosition() {
+        return position;
+    }
+
+    public String getLastVisit() {
+        return lastVisit;
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/data/network/RetrofitFactory.java
+++ b/app/src/main/java/ru/myitschool/work/data/network/RetrofitFactory.java
@ -0,0 +1,31 @@
+package ru.myitschool.work.data.network;
+
+import static ru.myitschool.work.core.Constants.SERVER_ADDRESS;
+
+import retrofit2.Retrofit;
+import retrofit2.converter.gson.GsonConverterFactory;
+import ru.myitschool.work.data.network.api.EmployeeApi;
+
+public class RetrofitFactory {
+
+    private static RetrofitFactory INSTANCE;
+
+    private RetrofitFactory() {
+    }
+
+    public static synchronized RetrofitFactory getInstance() {
+        if (INSTANCE == null) {
+            INSTANCE = new RetrofitFactory();
+        }
+        return INSTANCE;
+    }
+
+    private final Retrofit retrofit = new Retrofit.Builder()
+            .baseUrl(SERVER_ADDRESS)
+            .addConverterFactory(GsonConverterFactory.create())
+            .build();
+
+    public EmployeeApi getEmployeeApi() {
+        return retrofit.create(EmployeeApi.class);
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/data/network/api/EmployeeApi.java
+++ b/app/src/main/java/ru/myitschool/work/data/network/api/EmployeeApi.java
@ -0,0 +1,20 @@
+package ru.myitschool.work.data.network.api;
+
+import retrofit2.Call;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.PATCH;
+import retrofit2.http.Path;
+import ru.myitschool.work.data.dto.Code;
+import ru.myitschool.work.data.dto.Employee;
+
+public interface EmployeeApi {
+    @GET("/api/{login}/auth")
+    Call<Void> auth(@Path("login") String login);
+
+    @GET("/api/{login}/info")
+    Call<Employee> info(@Path("login") String login);
+
+    @PATCH("/api/{login}/open")
+    Call<Void> open(@Path("login") String login, @Body Code code);
+}
--- a/app/src/main/java/ru/myitschool/work/data/repository/InfoRepositoryImpl.java
+++ b/app/src/main/java/ru/myitschool/work/data/repository/InfoRepositoryImpl.java
@ -0,0 +1,43 @@
+package ru.myitschool.work.data.repository;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import ru.myitschool.work.data.dto.Employee;
+import ru.myitschool.work.data.network.RetrofitFactory;
+import ru.myitschool.work.data.network.api.EmployeeApi;
+import ru.myitschool.work.domain.entities.Status;
+import ru.myitschool.work.domain.info.InfoRepository;
+
+public class InfoRepositoryImpl implements InfoRepository {
+    private static InfoRepositoryImpl INSTANCE;
+
+    public static InfoRepositoryImpl getInstance() {
+        if (INSTANCE == null) {
+            INSTANCE = new InfoRepositoryImpl();
+        }
+        return INSTANCE;
+    }
+
+    private EmployeeApi employeeApi = RetrofitFactory.getInstance().getEmployeeApi();
+
+
+    @Override
+    public void info(@NonNull String login, @NonNull Consumer<Status<Employee>> callback) {
+        employeeApi.info(login).enqueue(new Callback<Employee>() {
+            @Override
+            public void onResponse(Call<Employee> call, Response<Employee> response) {
+                callback.accept(new Status<>(response.code(), response.body(), null));
+            }
+
+            @Override
+            public void onFailure(Call<Employee> call, Throwable t) {
+                callback.accept(new Status<>(-1, null, t));
+            }
+        });
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/data/repository/LoginRepositoryImpl.java
+++ b/app/src/main/java/ru/myitschool/work/data/repository/LoginRepositoryImpl.java
@ -0,0 +1,42 @@
+package ru.myitschool.work.data.repository;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import ru.myitschool.work.data.network.RetrofitFactory;
+import ru.myitschool.work.data.network.api.EmployeeApi;
+import ru.myitschool.work.domain.entities.Status;
+import ru.myitschool.work.domain.login.LoginRepository;
+
+public class LoginRepositoryImpl implements LoginRepository {
+
+    private static LoginRepositoryImpl INSTANCE;
+
+    public static LoginRepositoryImpl getInstance() {
+        if (INSTANCE == null) {
+            INSTANCE = new LoginRepositoryImpl();
+        }
+        return INSTANCE;
+    }
+
+    private EmployeeApi employeeApi = RetrofitFactory.getInstance().getEmployeeApi();
+
+    @Override
+    public void auth(@NonNull String login, @NonNull Consumer<Status<Void>> callback) {
+        employeeApi.auth(login).enqueue(new Callback<Void>() {
+            @Override
+            public void onResponse(Call<Void> call, Response<Void> response) {
+                callback.accept(new Status<>(response.code(), null, null));
+            }
+
+            @Override
+            public void onFailure(Call<Void> call, Throwable t) {
+                callback.accept(new Status<>(-1, null, t));
+            }
+        });
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/data/repository/OpenRepositoryImpl.java
+++ b/app/src/main/java/ru/myitschool/work/data/repository/OpenRepositoryImpl.java
@ -0,0 +1,43 @@
+package ru.myitschool.work.data.repository;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+import ru.myitschool.work.data.dto.Code;
+import ru.myitschool.work.data.network.RetrofitFactory;
+import ru.myitschool.work.data.network.api.EmployeeApi;
+import ru.myitschool.work.domain.entities.Status;
+import ru.myitschool.work.domain.open.OpenRepository;
+
+public class OpenRepositoryImpl implements OpenRepository {
+
+    private static OpenRepositoryImpl INSTANCE;
+
+    public static OpenRepositoryImpl getInstance() {
+        if (INSTANCE == null) {
+            INSTANCE = new OpenRepositoryImpl();
+        }
+        return INSTANCE;
+    }
+
+    private EmployeeApi employeeApi = RetrofitFactory.getInstance().getEmployeeApi();
+
+    @Override
+    public void open(@NonNull String login, @NonNull Code code, @NonNull Consumer<Status<Void>> callback) {
+        employeeApi.open(login, code).enqueue(new Callback<Void>() {
+            @Override
+            public void onResponse(Call<Void> call, Response<Void> response) {
+                callback.accept(new Status<>(response.code(), null, null));
+            }
+
+            @Override
+            public void onFailure(Call<Void> call, Throwable t) {
+                callback.accept(new Status<>(-1, null, t));
+            }
+        });
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/domain/entities/Status.java
+++ b/app/src/main/java/ru/myitschool/work/domain/entities/Status.java
@ -0,0 +1,32 @@
+package ru.myitschool.work.domain.entities;
+
+import androidx.annotation.Nullable;
+
+public class Status<T> {
+    private final int statusCode;
+    @Nullable
+    private final T value;
+
+    @Nullable
+    private final Throwable errors;
+
+    public Status(int statusCode, @Nullable T value, @Nullable Throwable errors) {
+        this.statusCode = statusCode;
+        this.value = value;
+        this.errors = errors;
+    }
+
+    public int getStatusCode() {
+        return statusCode;
+    }
+
+    @Nullable
+    public T getValue() {
+        return value;
+    }
+
+    @Nullable
+    public Throwable getErrors() {
+        return errors;
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/domain/info/InfoRepository.java
+++ b/app/src/main/java/ru/myitschool/work/domain/info/InfoRepository.java
@ -0,0 +1,12 @@
+package ru.myitschool.work.domain.info;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import ru.myitschool.work.data.dto.Employee;
+import ru.myitschool.work.domain.entities.Status;
+
+public interface InfoRepository {
+    void info(@NonNull String login, @NonNull Consumer<Status<Employee>> callback);
+}
--- a/app/src/main/java/ru/myitschool/work/domain/info/InfoUseCase.java
+++ b/app/src/main/java/ru/myitschool/work/domain/info/InfoUseCase.java
@ -0,0 +1,20 @@
+package ru.myitschool.work.domain.info;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import ru.myitschool.work.data.dto.Employee;
+import ru.myitschool.work.domain.entities.Status;
+
+public class InfoUseCase {
+    private final InfoRepository repository;
+
+    public InfoUseCase(InfoRepository repository) {
+        this.repository = repository;
+    }
+
+    public void execute(@NonNull String login, @NonNull Consumer<Status<Employee>> callback) {
+        repository.info(login, callback);
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/domain/login/AuthUseCase.java
+++ b/app/src/main/java/ru/myitschool/work/domain/login/AuthUseCase.java
@ -0,0 +1,25 @@
+package ru.myitschool.work.domain.login;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import ru.myitschool.work.domain.entities.Status;
+
+public class AuthUseCase {
+    private final LoginRepository repository;
+
+    public AuthUseCase(LoginRepository repository) {
+        this.repository = repository;
+    }
+
+    public void execute(@NonNull String login, @NonNull Consumer<Status<Boolean>> callback) {
+        repository.auth(login, status -> {
+            callback.accept(new Status<>(
+                    status.getStatusCode(),
+                    (status.getStatusCode() == 200 || status.getStatusCode() == 401) ? status.getStatusCode() == 200 : null,
+                    status.getErrors()
+            ));
+        });
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/domain/login/LoginRepository.java
+++ b/app/src/main/java/ru/myitschool/work/domain/login/LoginRepository.java
@ -0,0 +1,11 @@
+package ru.myitschool.work.domain.login;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import ru.myitschool.work.domain.entities.Status;
+
+public interface LoginRepository {
+    void auth(@NonNull String login, @NonNull Consumer<Status<Void>> callback);
+}
--- a/app/src/main/java/ru/myitschool/work/domain/open/OpenRepository.java
+++ b/app/src/main/java/ru/myitschool/work/domain/open/OpenRepository.java
@ -0,0 +1,12 @@
+package ru.myitschool.work.domain.open;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import ru.myitschool.work.data.dto.Code;
+import ru.myitschool.work.domain.entities.Status;
+
+public interface OpenRepository {
+    void open(@NonNull String login, @NonNull Code code, @NonNull Consumer<Status<Void>> callback);
+}
--- a/app/src/main/java/ru/myitschool/work/domain/open/OpenUseCase.java
+++ b/app/src/main/java/ru/myitschool/work/domain/open/OpenUseCase.java
@ -0,0 +1,20 @@
+package ru.myitschool.work.domain.open;
+
+import androidx.annotation.NonNull;
+
+import java.util.function.Consumer;
+
+import ru.myitschool.work.data.dto.Code;
+import ru.myitschool.work.domain.entities.Status;
+
+public class OpenUseCase {
+    private final OpenRepository repository;
+
+    public OpenUseCase(OpenRepository repository) {
+        this.repository = repository;
+    }
+
+    public void execute(@NonNull String login, @NonNull Long code, @NonNull Consumer<Status<Void>> callback) {
+        repository.open(login, new Code(code), callback);
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/RootActivity.kt
+++ b/app/src/main/java/ru/myitschool/work/ui/RootActivity.kt
@ -0,0 +1,15 @@
+package ru.myitschool.work.ui
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import dagger.hilt.android.AndroidEntryPoint
+import ru.myitschool.work.R
+
+// НЕ ИЗМЕНЯЙТЕ НАЗВАНИЕ КЛАССА!
+@AndroidEntryPoint
+class RootActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_root)
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/employee/EmployeeFragment.java
+++ b/app/src/main/java/ru/myitschool/work/ui/employee/EmployeeFragment.java
@ -0,0 +1,139 @@
+package ru.myitschool.work.ui.employee;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentResultListener;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.Navigation;
+
+import com.squareup.picasso.Picasso;
+
+import ru.myitschool.work.R;
+import ru.myitschool.work.data.dto.Employee;
+import ru.myitschool.work.databinding.FragmentEmployeeBinding;
+import ru.myitschool.work.ui.qr.scan.QrScanDestination;
+
+public class EmployeeFragment extends Fragment {
+
+    private static final String SHARED_PREFERENCES_LOGIN_PREFERENCES = "l01";
+    private static final String SHARED_PREFERENCES_LOGIN_STRING = "l02";
+    private static final String SHARED_PREFERENCES_CODE = "l03";
+
+
+    private FragmentEmployeeBinding binding;
+    private EmployeeViewModel viewModel;
+
+    public EmployeeFragment() {
+        super(R.layout.fragment_employee);
+    }
+
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        binding = FragmentEmployeeBinding.bind(view);
+        viewModel = new ViewModelProvider(this).get(EmployeeViewModel.class);
+
+
+        binding.logout.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                getContext()
+                        .getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE)
+                        .edit()
+                        .remove(SHARED_PREFERENCES_LOGIN_STRING).apply();
+
+                Navigation.findNavController(getView()).navigate(
+                        R.id.action_employee_fragment_to_login_fragment);
+            }
+        });
+
+        binding.refresh.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                viewModel.startQuery(getContext()
+                        .getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE)
+                        .getString(SHARED_PREFERENCES_LOGIN_STRING, ""));
+            }
+        });
+
+
+        binding.scan.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Navigation.findNavController(getView()).navigate(
+                        R.id.action_employee_fragment_to_qr_fragment);
+            }
+        });
+
+        getParentFragmentManager().setFragmentResultListener(QrScanDestination.REQUEST_KEY, this, new FragmentResultListener() {
+            @Override
+            public void onFragmentResult(@NonNull String key, @NonNull Bundle bundle) {
+                SharedPreferences sharedPreferences = getContext().getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE);
+                sharedPreferences.edit()
+                        .putString(SHARED_PREFERENCES_CODE, QrScanDestination.INSTANCE.getDataIfExist(bundle))
+                        .apply();
+                Navigation.findNavController(getView()).navigate(R.id.action_employee_fragment_to_result_fragment);
+            }
+        });
+
+
+        subscribe(viewModel);
+        viewModel.startQuery(getContext()
+                .getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE)
+                .getString(SHARED_PREFERENCES_LOGIN_STRING, ""));
+    }
+
+    private void subscribe(EmployeeViewModel viewModel) {
+        viewModel.isSuccessfulReceiptLiveData.observe(getViewLifecycleOwner(), new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean value) {
+                if (value) {
+                    binding.fullname.setVisibility(View.VISIBLE);
+                    binding.photo.setVisibility(View.VISIBLE);
+                    binding.position.setVisibility(View.VISIBLE);
+                    binding.lastEntry.setVisibility(View.VISIBLE);
+                    binding.logout.setVisibility(View.VISIBLE);
+                    binding.scan.setVisibility(View.VISIBLE);
+
+                    binding.error.setVisibility(View.GONE);
+                } else {
+                    binding.error.setVisibility(View.VISIBLE);
+                    binding.error.setText("error");
+
+                    binding.fullname.setVisibility(View.GONE);
+                    binding.photo.setVisibility(View.GONE);
+                    binding.position.setVisibility(View.GONE);
+                    binding.lastEntry.setVisibility(View.GONE);
+                    binding.logout.setVisibility(View.GONE);
+                    binding.scan.setVisibility(View.GONE);
+                }
+            }
+        });
+
+        viewModel.employeeLiveData.observe(getViewLifecycleOwner(), new Observer<Employee>() {
+            @Override
+            public void onChanged(Employee value) {
+                binding.fullname.setText(value.getName());
+                Picasso.get().load(value.getPhoto()).into(binding.photo);
+                binding.position.setText(value.getPosition());
+                binding.lastEntry.setText(value.getLastVisit());
+            }
+        });
+    }
+
+
+    @Override
+    public void onDestroyView() {
+        binding = null;
+        super.onDestroyView();
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/employee/EmployeeViewModel.java
+++ b/app/src/main/java/ru/myitschool/work/ui/employee/EmployeeViewModel.java
@ -0,0 +1,30 @@
+package ru.myitschool.work.ui.employee;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import ru.myitschool.work.data.dto.Employee;
+import ru.myitschool.work.data.repository.InfoRepositoryImpl;
+import ru.myitschool.work.domain.info.InfoUseCase;
+
+public class EmployeeViewModel extends ViewModel {
+    private final MutableLiveData<Boolean> mutableIsSuccessfulReceiptLiveData = new MutableLiveData<>();
+    public final LiveData<Boolean> isSuccessfulReceiptLiveData = mutableIsSuccessfulReceiptLiveData;
+
+    private final MutableLiveData<Employee> mutableEmployeeLiveData = new MutableLiveData<>();
+    public final LiveData<Employee> employeeLiveData = mutableEmployeeLiveData;
+
+    private final InfoUseCase infoUseCase = new InfoUseCase(InfoRepositoryImpl.getInstance());
+
+    public void startQuery(String currentLogin) {
+        infoUseCase.execute(currentLogin, status -> {
+            if (status.getStatusCode() == 200) {
+                mutableEmployeeLiveData.postValue(status.getValue());
+                mutableIsSuccessfulReceiptLiveData.setValue(true);
+            } else /*(status.getStatusCode() == 401) */ {
+                mutableIsSuccessfulReceiptLiveData.setValue(false);
+            }
+        });
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/login/LoginFragment.java
+++ b/app/src/main/java/ru/myitschool/work/ui/login/LoginFragment.java
@ -0,0 +1,108 @@
+package ru.myitschool.work.ui.login;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.Navigation;
+
+import ru.myitschool.work.R;
+import ru.myitschool.work.databinding.FragmentLoginBinding;
+
+public class LoginFragment extends Fragment {
+
+    private static final String SHARED_PREFERENCES_LOGIN_PREFERENCES = "l01";
+    private static final String SHARED_PREFERENCES_LOGIN_STRING = "l02";
+
+    private FragmentLoginBinding binding;
+    private LoginViewModel viewModel;
+
+    public LoginFragment() {
+        super(R.layout.fragment_login);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+
+        SharedPreferences sharedPreferences = getContext().getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE);
+        if (sharedPreferences.contains(SHARED_PREFERENCES_LOGIN_STRING)) {
+
+            Navigation.findNavController(getView()).navigate(
+                    R.id.action_login_fragment_to_employee_fragment);
+        }
+
+        binding = FragmentLoginBinding.bind(view);
+        viewModel = new ViewModelProvider(this).get(LoginViewModel.class);
+
+        binding.username.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                viewModel.onChangeLogin(s.toString());
+                binding.error.setVisibility(View.GONE);
+            }
+        });
+        binding.login.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                viewModel.startQuery();
+                binding.error.setVisibility(View.GONE);
+            }
+        });
+
+        subscribe(viewModel);
+
+        viewModel.onChangeLogin(binding.username.toString());
+
+    }
+
+    private void subscribe(LoginViewModel viewModel) {
+        viewModel.buttonStateLiveData.observe(getViewLifecycleOwner(), new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean value) {
+                binding.login.setClickable(value);
+                binding.login.setEnabled(value);
+            }
+        });
+        viewModel.loginStateLiveData.observe(getViewLifecycleOwner(), new Observer<String>() {
+            @Override
+            public void onChanged(String s) {
+                if (s.equals("Correct Login")) {
+                    SharedPreferences sharedPreferences = getContext().getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE);
+                    sharedPreferences.edit()
+                            .putString(SHARED_PREFERENCES_LOGIN_STRING, binding.username.getText().toString())
+                            .apply();
+
+                    Navigation.findNavController(getView()).navigate(
+                            R.id.action_login_fragment_to_employee_fragment);
+                } else if (s.equals("Incorrect Login")) {
+                    binding.error.setVisibility(View.VISIBLE);
+                    binding.error.setText("Error");
+                }
+            }
+        });
+    }
+
+    @Override
+    public void onDestroyView() {
+        binding = null;
+        super.onDestroyView();
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/login/LoginViewModel.java
+++ b/app/src/main/java/ru/myitschool/work/ui/login/LoginViewModel.java
@ -0,0 +1,47 @@
+package ru.myitschool.work.ui.login;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import ru.myitschool.work.data.repository.LoginRepositoryImpl;
+import ru.myitschool.work.domain.login.AuthUseCase;
+
+public class LoginViewModel extends ViewModel {
+
+    private final MutableLiveData<Boolean> mutableButtonStateLiveData = new MutableLiveData<>();
+    public final LiveData<Boolean> buttonStateLiveData = mutableButtonStateLiveData;
+
+    private final MutableLiveData<String> mutableLoginStateLiveData = new MutableLiveData<>();
+    public final LiveData<String> loginStateLiveData = mutableLoginStateLiveData;
+
+
+    private final AuthUseCase authUseCase = new AuthUseCase(LoginRepositoryImpl.getInstance());
+
+
+    private String login;
+
+    public void onChangeLogin(String login) {
+        this.login = login;
+        onChangeButtonState(login);
+    }
+
+    private void onChangeButtonState(String login) {
+        if (login.length() >= 3 && !Character.isDigit(login.charAt(0)) && login.matches("^[a-zA-Z0-9]*$")) {
+            mutableButtonStateLiveData.postValue(true);
+        } else {
+            mutableButtonStateLiveData.postValue(false);
+        }
+    }
+
+    public void startQuery() {
+        final String currentLogin = login;
+        authUseCase.execute(currentLogin, status -> {
+            if (status.getStatusCode() == 200) {
+                mutableLoginStateLiveData.postValue("Correct Login");
+            } else /*(status.getStatusCode() == 401) */ {
+                mutableLoginStateLiveData.postValue("Incorrect Login");
+            }
+        });
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/qr/result/ResultFragment.java
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/result/ResultFragment.java
@ -0,0 +1,82 @@
+package ru.myitschool.work.ui.qr.result;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.View;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModelProvider;
+import androidx.navigation.Navigation;
+
+import ru.myitschool.work.R;
+import ru.myitschool.work.databinding.FragmentResultBinding;
+
+public class ResultFragment extends Fragment {
+    private static final String SHARED_PREFERENCES_LOGIN_PREFERENCES = "l01";
+    private static final String SHARED_PREFERENCES_LOGIN_STRING = "l02";
+    private static final String SHARED_PREFERENCES_CODE = "l03";
+
+
+    private FragmentResultBinding binding;
+    private ResultViewModel viewModel;
+
+    public ResultFragment() {
+        super(R.layout.fragment_result);
+    }
+
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        binding = FragmentResultBinding.bind(view);
+        viewModel = new ViewModelProvider(this).get(ResultViewModel.class);
+
+
+        binding.close.setOnClickListener(v -> {
+            Navigation.findNavController(getView()).navigate(R.id.action_result_fragment_to_employee_fragment);
+
+        });
+
+        try {
+            if (getContext()
+                    .getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE)
+                    .getString(SHARED_PREFERENCES_CODE, null) == null) {
+                binding.result.setText(R.string.operation_was_cancelled);
+            }
+            viewModel.startQuery(getContext()
+                    .getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE)
+                    .getString(SHARED_PREFERENCES_LOGIN_STRING, ""), Long.valueOf(getContext()
+                    .getSharedPreferences(SHARED_PREFERENCES_LOGIN_PREFERENCES, Context.MODE_PRIVATE)
+                    .getString(SHARED_PREFERENCES_CODE, "")));
+        } catch (Exception e) {
+            binding.result.setText(R.string.operation_was_cancelled);
+        }
+
+
+        subscribe(viewModel);
+    }
+
+    private void subscribe(ResultViewModel viewModel) {
+        viewModel.isCorrectLiveData.observe(getViewLifecycleOwner(), new Observer<Boolean>() {
+            @Override
+            public void onChanged(Boolean value) {
+                if (value) {
+                    binding.result.setText(R.string.success);
+                } else {
+                    binding.result.setText(R.string.something_wrong);
+                }
+            }
+        });
+    }
+
+
+    @Override
+    public void onDestroyView() {
+        binding = null;
+        super.onDestroyView();
+    }
+}
--- a/app/src/main/java/ru/myitschool/work/ui/qr/result/ResultViewModel.java
+++ b/app/src/main/java/ru/myitschool/work/ui/qr/result/ResultViewModel.java
@ -0,0 +1,27 @@
+package ru.myitschool.work.ui.qr.result;
+
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.ViewModel;
+
+import ru.myitschool.work.data.repository.OpenRepositoryImpl;
+import ru.myitschool.work.domain.open.OpenUseCase;
+
+public class ResultViewModel extends ViewModel {
+
+    private final MutableLiveData<Boolean> mutableIsCorrectLiveData = new MutableLiveData<>();
+    public final LiveData<Boolean> isCorrectLiveData = mutableIsCorrectLiveData;
+
+    private final OpenUseCase openUseCase = new OpenUseCase(OpenRepositoryImpl.getInstance());
+
+
+    public void startQuery(String currentLogin, Long code) {
+        openUseCase.execute(currentLogin, code, status -> {
+            if (status.getStatusCode() == 200) {
+                mutableIsCorrectLiveData.setValue(true);
+            } else /*(status.getStatusCode() == 400 || status.getStatusCode() == 401)*/ {
+                mutableIsCorrectLiveData.setValue(false);
+            }
+        });
+    }
+}
--- 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 +1,12 @@
+package ru.myitschool.work.utils
+
+import android.text.Editable
+import android.text.TextWatcher
+
+open class TextChangedListener: TextWatcher {
+    override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) = Unit
+
+    override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) = Unit
+
+    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 +1,8 @@
+<androidx.fragment.app.FragmentContainerView 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"
+    android:id="@+id/root"
+    app:navGraph="@navigation/nav_graph"
+    android:name="androidx.navigation.fragment.NavHostFragment"
+    app:defaultNavHost="true" />
--- a/app/src/main/res/layout/fragment_employee.xml
+++ b/app/src/main/res/layout/fragment_employee.xml
@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="20dp"
+    tools:context=".ui.employee.EmployeeFragment">
+
+    <TextView
+        android:id="@+id/fullname"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        tools:text="fullname" />
+
+    <ImageView
+        android:id="@+id/photo"
+        android:layout_width="200dp"
+        android:layout_height="200dp" />
+
+    <TextView
+        android:id="@+id/position"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        tools:text="position" />
+
+    <TextView
+        android:id="@+id/lastEntry"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        tools:text="lastEntry" />
+
+    <TextView
+        android:id="@+id/error"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:visibility="gone"
+        tools:text="error" />
+
+    <Button
+        android:id="@+id/logout"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="logout" />
+
+    <Button
+        android:id="@+id/refresh"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="refresh" />
+
+    <Button
+        android:id="@+id/scan"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="scan" />
+
+</LinearLayout>
--- a/app/src/main/res/layout/fragment_login.xml
+++ b/app/src/main/res/layout/fragment_login.xml
@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="20dp">
+
+    <EditText
+        android:id="@+id/username"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="hint" />
+
+    <Button
+        android:id="@+id/login"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="login" />
+
+    <TextView
+        android:id="@+id/error"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:visibility="gone" />
+
+</LinearLayout>
--- 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/layout/fragment_result.xml
+++ b/app/src/main/res/layout/fragment_result.xml
@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:padding="20dp">
+
+    <TextView
+        android:id="@+id/result"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="result" />
+
+    <Button
+        android:id="@+id/close"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="close" />
+
+</LinearLayout>
--- 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/navigation/nav_graph.xml
+++ b/app/src/main/res/navigation/nav_graph.xml
@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/nav_graph.xml"
+    app:startDestination="@id/login_fragment">
+
+    <fragment
+        android:id="@+id/login_fragment"
+        android:name="ru.myitschool.work.ui.login.LoginFragment"
+        android:label="LoginFragment">
+        <action
+            android:id="@+id/action_login_fragment_to_employee_fragment"
+            app:destination="@id/employee_fragment" />
+    </fragment>
+
+    <fragment
+        android:id="@+id/employee_fragment"
+        android:name="ru.myitschool.work.ui.employee.EmployeeFragment"
+        android:label="EmployeeFragment">
+        <action
+            android:id="@+id/action_employee_fragment_to_login_fragment"
+            app:destination="@id/login_fragment" />
+        <action
+            android:id="@+id/action_employee_fragment_to_qr_fragment"
+            app:destination="@id/qr_fragment" />
+        <action
+            android:id="@+id/action_employee_fragment_to_result_fragment"
+            app:destination="@id/result_fragment" />
+    </fragment>
+
+    <fragment
+        android:id="@+id/qr_fragment"
+        android:name="ru.myitschool.work.ui.qr.scan.QrScanFragment"
+        android:label="QrScanFragment"></fragment>
+
+    <fragment
+        android:id="@+id/result_fragment"
+        android:name="ru.myitschool.work.ui.qr.result.ResultFragment"
+        android:label="ResultFragment">
+        <action
+            android:id="@+id/action_result_fragment_to_employee_fragment"
+            app:destination="@id/employee_fragment" />
+        <action
+            android:id="@+id/action_result_fragment_to_qr_fragment"
+            app:destination="@id/qr_fragment" />
+    </fragment>
+</navigation>
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">NTO Pass</string>
+    <string name="operation_was_cancelled">Вход был отменён</string>
+    <string name="success">Успешно</string>
+    <string name="something_wrong">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 +1,6 @@
+<resources>
+    <string name="app_name">NTO Pass</string>
+    <string name="operation_was_cancelled">Operation was cancelled</string>
+    <string name="success">Success</string>
+    <string name="something_wrong">Something wrong</string>
+</resources>
--- a/app/src/main/res/values/strings_qr.xml
+++ b/app/src/main/res/values/strings_qr.xml
@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="close_button">Close</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/buildSrc/.gitignore
+++ b/buildSrc/.gitignore
@ -0,0 +1,2 @@
+/.gradle
+/build
--- a/buildSrc/build.gradle.kts
+++ b/buildSrc/build.gradle.kts
@ -0,0 +1,8 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    google()
+    mavenCentral()
+}
--- a/buildSrc/src/main/java/Dependencies.kt
+++ b/buildSrc/src/main/java/Dependencies.kt
@ -0,0 +1,220 @@
+data class Dependency(
+        val name: String,
+        val version: String,
+) {
+    val fullPath get() = "$name:$version"
+}
+
+object Dependencies {
+
+    /**
+     * Type-safe HTTP client for Android and Java by Square, Inc.
+     *
+     * [Documentation](http://square.github.io/retrofit/)
+     *
+     * [Github](https://github.com/square/retrofit)
+     *
+     * [Apache License 2.0](https://github.com/square/retrofit/blob/master/LICENSE.txt)
+     *
+     * [Changelog](https://github.com/square/retrofit/blob/master/CHANGELOG.md)
+     */
+    object Retrofit {
+        private const val version = "2.9.0"
+
+        val library = Dependency("com.squareup.retrofit2:retrofit", version)
+        val gsonConverter = Dependency("com.squareup.retrofit2:converter-gson", version)
+    }
+
+
+    /**
+     * [Documentation](https://developer.android.com/jetpack/androidx)
+     *
+     * [Releases](https://developer.android.com/jetpack/androidx/versions).
+     */
+    object AndroidX {
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/core)
+         */
+        val core = Dependency("androidx.core:core-ktx", "1.13.1")
+
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/appcompat)
+         */
+        val appcompat = Dependency("androidx.appcompat:appcompat", "1.7.0")
+
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/activity)
+         */
+        val activity = Dependency("androidx.activity:activity", "1.9.3")
+
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/fragment)
+         */
+        val fragment = Dependency("androidx.fragment:fragment-ktx", "1.8.4")
+
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/recyclerview)
+         */
+        val recyclerView = Dependency("androidx.recyclerview:recyclerview", "1.3.2")
+
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/cardview)
+         */
+        val cardView = Dependency("androidx.cardview:cardview", "1.0.0")
+
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/gridlayout)
+         */
+        val gridLayout = Dependency("androidx.gridlayout:gridlayout", "1.0.0")
+
+        /**
+         * A ConstraintLayout is a ViewGroup which allows you to position and size widgets in a flexible way.
+         *
+         * [Documentation](https://developer.android.com/reference/android/support/constraint/ConstraintLayout)
+         *
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/constraintlayout)
+         */
+        val constraintLayout = Dependency("androidx.constraintlayout:constraintlayout", "2.1.4")
+
+        /**
+         * CoordinatorLayout is a super-powered FrameLayout.
+         * CoordinatorLayout is intended for two primary use cases:
+         * 1. As a top-level application decor or chrome layout
+         * 2. As a container for a specific interaction with one or more child views
+         *
+         * [Documentation](https://developer.android.com/jetpack/androidx/releases/coordinatorlayout)
+         *
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/coordinatorlayout)
+         */
+        val coordinatorLayout = Dependency("androidx.coordinatorlayout:coordinatorlayout", "1.2.0")
+
+        /**
+         * The SwipeRefreshLayout should be used whenever the user
+         * can refresh the contents of a view via a vertical swipe gesture.
+         *
+         * [Documentation](https://developer.android.com/jetpack/androidx/releases/swiperefreshlayout)
+         *
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/swiperefreshlayout)
+         */
+        val swipeRefreshLayout = Dependency("androidx.swiperefreshlayout:swiperefreshlayout", "1.1.0")
+
+        /**
+         * [Changelog](https://developer.android.com/jetpack/androidx/releases/test/)
+         */
+        object Testing {
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing)
+             */
+            val core = Dependency("androidx.test:core", "1.5.0")
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing)
+             */
+            val junit = Dependency("androidx.test.ext:junit-ktx", "1.1.5")
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing/espresso)
+             */
+            object Espresso {
+                private const val version = "3.5.1"
+                val core = Dependency("androidx.test.espresso:espresso-core", version)
+                val intents = Dependency("androidx.test.espresso:espresso-intents", version)
+                val contrib = Dependency("androidx.test.espresso:espresso-contrib", version)
+            }
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing/junit-runner)
+             */
+            val runner = Dependency("androidx.test:runner", "1.5.2")
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing/junit-rules)
+             */
+            val rules = Dependency("androidx.test:rules", "1.5.0")
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing/junit-rules)
+             */
+            val compose = Dependency("androidx.compose.ui:ui-test-junit4", "1.6.0")
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing/junit-runner#using-android-test-orchestrator)
+             */
+            val orchestrator = Dependency("androidx.test:orchestrator", "1.4.2")
+
+            /**
+             * [Documentation](https://developer.android.com/training/testing/ui-automator)
+             */
+            val uiAutomator = Dependency("androidx.test.uiautomator:uiautomator", "2.2.0")
+        }
+
+        /**
+         * [Documentation](https://material.io/develop/android/)
+         *
+         * [Github](https://github.com/material-components/material-components-android)
+         *
+         * [Changelog](https://github.com/material-components/material-components-android/releases)
+         */
+        val materialDesign = Dependency("com.google.android.material:material", "1.11.0")
+
+        object Lifecycle {
+            private const val version = "2.6.1"
+
+            val viewModel = Dependency("androidx.lifecycle:lifecycle-viewmodel-ktx", version)
+            val common = Dependency("androidx.lifecycle:lifecycle-common", version)
+        }
+
+        object Navigation {
+            private const val version = "2.8.3"
+
+            val fragment = Dependency("androidx.navigation:navigation-fragment-ktx", version)
+            val navigationUi = Dependency("androidx.navigation:navigation-ui-ktx", version)
+        }
+    }
+
+    /**
+     * JUnit is a simple framework to write repeatable tests.
+     *
+     * [Documentation](https://junit.org/junit4/)
+     *
+     * [Github](https://github.com/junit-team/junit4)
+     *
+     * [Eclipse Public License 1.0](https://github.com/junit-team/junit4/blob/master/LICENSE-junit.txt)
+     *
+     * [Changelog](https://github.com/junit-team/junit4/wiki)
+     */
+    val junit = Dependency("junit:junit", "4.13")
+
+    /**
+     * Truth makes your test assertions and failure messages more readable.
+     * Similar to AssertJ, it natively supports many JDK and Guava types,
+     * and it is extensible to others.
+     *
+     * [Documentation](https://truth.dev/)
+     *
+     * [Github](https://github.com/google/truth)
+     *
+     * [Apache License 2.0](https://github.com/google/truth/blob/master/LICENSE)
+     *
+     * [Changelog](https://github.com/google/truth/releases)
+     */
+    val truth = Dependency("com.google.truth:truth", "1.3.0")
+
+    /**
+     * Kaspresso is a framework for Android UI testing. Based on Espresso and UI Automator.
+     *
+     * [Documentation](https://kasperskylab.github.io/Kaspresso/)
+     *
+     * [Github](https://github.com/KasperskyLab/Kaspresso)
+     *
+     * [Apache License 2.0](https://github.com/KasperskyLab/Kaspresso/blob/master/LICENSE.txt)
+     *
+     * [Changelog](https://github.com/KasperskyLab/Kaspresso/releases)
+     */
+    object Kaspresso {
+        private const val version = "1.5.3"
+        val core = Dependency("com.kaspersky.android-components:kaspresso", version)
+        val composeSupport = Dependency("com.kaspersky.android-components:kaspresso-compose-support", version)
+    }
+}
--- a/buildSrc/src/main/java/DependencyHandlerExtensions.kt
+++ b/buildSrc/src/main/java/DependencyHandlerExtensions.kt
@ -0,0 +1,40 @@
+import org.gradle.api.artifacts.dsl.DependencyHandler
+
+fun DependencyHandler.implementation(dependency: Dependency) {
+    add(Type.IMPLEMENTATION, dependency.fullPath)
+}
+
+fun DependencyHandler.testImplementation(dependency: Dependency) {
+    add(Type.TEST_IMPLEMENTATION, dependency.fullPath)
+}
+
+fun DependencyHandler.androidTestImplementation(dependency: Dependency) {
+    add(Type.ANDROID_TEST_IMPLEMENTATION, dependency.fullPath)
+}
+
+fun DependencyHandler.api(dependency: Dependency) {
+    add(Type.API, dependency.fullPath)
+}
+
+fun DependencyHandler.kapt(dependency: Dependency) {
+    add(Type.KAPT, dependency.fullPath)
+}
+
+fun DependencyHandler.ksp(dependency: Dependency) {
+    add(Type.KSP, dependency.fullPath)
+}
+
+fun DependencyHandler.defaultLibrary() {
+    api(Dependencies.AndroidX.core)
+    api(Dependencies.AndroidX.appcompat)
+    api(Dependencies.AndroidX.materialDesign)
+}
+
+private object Type {
+    const val IMPLEMENTATION = "implementation"
+    const val TEST_IMPLEMENTATION = "testImplementation"
+    const val ANDROID_TEST_IMPLEMENTATION = "androidTestImplementation"
+    const val API = "api"
+    const val KAPT = "kapt"
+    const val KSP = "ksp"
+}
--- a/buildSrc/src/main/java/Plugin.kt
+++ b/buildSrc/src/main/java/Plugin.kt
@ -0,0 +1,67 @@
+import org.gradle.kotlin.dsl.version
+import org.gradle.plugin.use.PluginDependenciesSpec
+import org.gradle.plugin.use.PluginDependencySpec
+
+val PluginDependenciesSpec.androidApplication: PluginDependencySpec
+    get() = id(Plugin.Id.Android.application)
+val PluginDependenciesSpec.androidLibrary: PluginDependencySpec
+    get() = id(Plugin.Id.Android.library)
+val PluginDependenciesSpec.kotlinJvm: PluginDependencySpec
+    get() = id(Plugin.Id.Kotlin.jvm)
+val PluginDependenciesSpec.kotlinAndroid: PluginDependencySpec
+    get() = id(Plugin.Id.Kotlin.android)
+val PluginDependenciesSpec.kotlinParcelize: PluginDependencySpec
+    get() = id(Plugin.Id.Kotlin.parcelize)
+val PluginDependenciesSpec.kotlinAnnotationProcessor: PluginDependencySpec
+    get() = id(Plugin.Id.Kotlin.annotationProcessor)
+val PluginDependenciesSpec.kotlinSerialization: PluginDependencySpec
+    get() = id(Plugin.Id.Kotlin.serialization)
+val PluginDependenciesSpec.jetbrainsKotlinSerialization: PluginDependencySpec
+    get() = id(Plugin.Id.JetBrains.serialization)
+
+object Plugin {
+    object Id {
+        object Android {
+            /**
+             * [Documentation](https://google.github.io/android-gradle-dsl/current/)
+             * [Changelog](https://developer.android.com/studio/releases/gradle-plugin)
+             */
+            const val application = "com.android.application"
+            /**
+             * [Documentation](https://google.github.io/android-gradle-dsl/current/)
+             * [Changelog](https://developer.android.com/studio/releases/gradle-plugin)
+             */
+            const val library = "com.android.library"
+        }
+
+        object Kotlin {
+            /**
+             * Plugin published in https://plugins.gradle.org/
+             */
+            const val jvm = "org.jetbrains.kotlin.jvm"
+            /**
+             * Plugin published in https://plugins.gradle.org/
+             */
+            const val android = "org.jetbrains.kotlin.android"
+
+            /**
+             * Plugin published in https://plugins.gradle.org/
+             */
+            const val parcelize = "kotlin-parcelize"
+
+            /**
+             * Plugin published in https://plugins.gradle.org/
+             */
+            const val annotationProcessor = "org.jetbrains.kotlin.kapt"
+
+            /**
+             * Plugin published in https://plugins.gradle.org/
+             */
+            const val serialization = "plugin.serialization"
+        }
+
+        object JetBrains {
+            const val serialization = "org.jetbrains.kotlin.plugin.serialization"
+        }
+    }
+}
--- a/buildSrc/src/main/java/Version.kt
+++ b/buildSrc/src/main/java/Version.kt
@ -0,0 +1,42 @@
+import org.gradle.api.JavaVersion
+
+object Version {
+
+    /**
+     * Gradle is an open-source build automation tool focused on flexibility and performance.
+     *
+     * [Documentation](https://docs.gradle.org/current/userguide/userguide.html)
+     *
+     * [Github](https://github.com/gradle/gradle)
+     *
+     * [Apache 2.0 License](https://github.com/gradle/gradle/blob/master/LICENSE)
+     *
+     * [Changelog](https://gradle.org/releases/)
+     */
+    const val agp = "8.7.1"
+
+    object Kotlin {
+
+        /**
+         * [Documentation](https://kotlinlang.org/)
+         *
+         * [Source Code](https://github.com/JetBrains/kotlin/)
+         *
+         * [Apache 2.0 License](https://github.com/JetBrains/kotlin/blob/master/license/LICENSE.txt)
+         *
+         * [Changelog](https://kotlinlang.org/releases.html)
+         */
+        const val language = "2.0.21"
+
+        val javaSource = JavaVersion.VERSION_11
+        const val jvmTarget = "11"
+    }
+
+    object Android {
+        object Sdk {
+            const val min = 24
+            const val compile = 34
+            const val target = 34
+        }
+    }
+}
--- 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/gradle/README.md
+++ b/gradle/README.md
@ -0,0 +1,11 @@
+# Файл для управления дистрибутивом Gradle
+
+Данный репозиторий необходим для поддержки актуальности дистрибутива Gradle в проектах. Данный проект необходимо подключать подмодулём и использовать во всех проектах.
+
+## Как обвновлять дистрибутив
+
+Перед обновлением необходимо удостоверится, что версия самого Gradle установлена не ниже, чем в дистрибутиве. Сделать это можно [здесь](https://sicampus.ru/gitea/core/dependecies/src/branch/main/src/main/java/Version.kt#L16).
+
+Процесс обновления выглядит следуюющим образом:
+1. В начале обновляем саму версию Gradle ([в этом репозитории](https://sicampus.ru/gitea/core/dependecies)).
+2. Обновлем ссылку на дестрибутив и проверяем совместимость.
--- a/gradle/wrapper/gradle-wrapper.jar
+++ b/gradle/wrapper/gradle-wrapper.jar
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@ -0,0 +1,6 @@
+#Thu Jan 04 22:32:26 NOVT 2024
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.9-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
--- 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")