sample for any class

app/build.gradle.kts

@@ -10,6 +10,8 @@ plugins {
 dependencies {
     // Project "app" depends on project "utils". (Project paths are separated with ":", so ":utils" refers to the top-level "utils" project.)
     implementation(project(":utils"))
+// https://mvnrepository.com/artifact/io.github.serpro69/kotlin-faker
+    implementation("io.github.serpro69:kotlin-faker:2.0.0-rc.7")
 }
 
 application {

app/src/main/kotlin/datasource.kt

@@ -0,0 +1,26 @@
+import io.github.serpro69.kfaker.Faker
+import model.*
+import java.util.*
+val faker = Faker()
+
+fun generateUsers(count: Int):List<User> {
+   val userList = mutableListOf<User>()
+    repeat(count){
+        userList.add(AdminUser(
+            UUID.randomUUID(),
+            faker.name.neutralFirstName(),
+            faker.string.numerify("555")
+        ))
+        userList.add(ManagerUser(
+            UUID.randomUUID(),
+            faker.phoneNumber.phoneNumber(),
+            faker.string.numerify("1010")
+        ))
+        userList.add(DefaultUser(
+            UUID.randomUUID(),
+            faker.name.neutralFirstName(),
+            faker.string.numerify("555")
+        ))
+    }
+    return userList
+}

app/src/main/kotlin/main.kt

@@ -1,45 +1,25 @@
-import model.UserAuthorize
-import java.security.KeyStore.SecretKeyEntry
-import java.security.SecureRandom
-import java.time.LocalDate
-import javax.crypto.SecretKeyFactory
-import javax.crypto.spec.PBEKeySpec
-import javax.crypto.spec.SecretKeySpec
+import model.AdminUser
+import model.DefaultUser
+import model.ManagerUser
+import kotlin.random.Random
 
-val authorizeList = mutableListOf<UserAuthorize>()
 fun main(){
-    val secureRandom = SecureRandom()
-    val salt = byteArrayOf()
-    secureRandom.nextBytes(salt)
+    val users = generateUsers(10)
+    users.forEach {
+        println(it.password)
     }
-
-fun hashedPassword(password: String, salt: ByteArray): String{
-    val pbeKeySpec = PBEKeySpec(
-        password.toCharArray(),
-        salt,
-        65536,
-        128)
-    val factory = SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1")
-    return factory.generateSecret(pbeKeySpec).encoded.toString()
+    val randomUserIndex = Random.nextInt(0, users.size)
+    val findUser = users[randomUserIndex]
+    println(findUser::class.java)
+    when(findUser){
+        is AdminUser -> {
+            println("adm")
         }
-fun matches(password: String, passwordHashed: String, salt: ByteArray): Boolean{
-    return  hashedPassword(password, salt).contentEquals(passwordHashed)
+        is ManagerUser -> {
+            println("manager")
         }
-fun registration(): UserAuthorize {
-    val userLogin = readlnOrNull()
-    checkNotNull(userLogin)
-    require(userLogin.length >= 4){
-        "Никнейм должен быть больше 4 символов"
+        is DefaultUser ->{
+            println("default")
         }
-    userLogin.forEach {
-        require(it.isLetterOrDigit())
-        require("@" in userLogin)
-        require(userLogin.contains("@"))
     }
-    return UserAuthorize(
-        authorizeList.size + 1,
-        password = "123",
-        login = userLogin,
-        lastAuthorizeDate = LocalDate.now()
-    )
 }

app/src/main/kotlin/model/AdminUser.kt

@@ -0,0 +1,9 @@
+package model
+
+import java.util.UUID
+
+class AdminUser(
+    userUUID: UUID,
+    userLogin: String,
+    userPassword: String,
+):User(userUUID, userLogin, userPassword)

app/src/main/kotlin/model/DefaultUser.kt

@@ -0,0 +1,10 @@
+package model
+
+import io.github.serpro69.kfaker.Faker
+import java.util.UUID
+
+class DefaultUser(
+    userUUID: UUID,
+    userLogin: String,
+    userPassword: String,
+):User(userUUID, userLogin, userPassword)

app/src/main/kotlin/model/ManagerUser.kt

@@ -0,0 +1,9 @@
+package model
+
+import java.util.UUID
+
+class ManagerUser(
+    userUUID: UUID,
+    userLogin: String,
+    userPassword: String,
+):User(userUUID, userLogin, userPassword)

app/src/main/kotlin/model/User.kt

@@ -0,0 +1,8 @@
+package model
+
+import java.util.UUID
+
+open class User(
+    val userUUID: UUID,
+    var login: String,
+    var password: String, )

app/src/main/kotlin/model/UserAuthorize.kt

@@ -1,10 +0,0 @@
-package model
-
-import java.time.LocalDate
-
-data class UserAuthorize(
-    val userId: Int,
-    val login: String,
-    var password: String,
-    var lastAuthorizeDate: LocalDate
-)

app/src/main/kotlin/service/AdminServiceImpl.kt

@@ -0,0 +1,3 @@
+package service
+
+class AdminServiceImpl