اصول S.O.L.I.D در کاتلین

data class User(
var id:Long,
var name:String,
var password:String
){
Fun signIn(){
     //this method will do signing in operation
}
Fun signOut(){
     // this method will do signing out operation
}
}
}

data class User(
var id:Long,
var name:String,
var password:String
)
Class AuthentivationService(){
Fun signIn(){
 //this method will do signing in operation
}
Fun signOut(){
// this method will do signing out operation
}
}

class Rectangle{
    private var length
    private var height
    //getters / setters  …
}
class Circle{
    private var radius
    //getters / setters  …
} 
class AreaFactory{
    public fun calculateArea(shapes:ArrayList<Object>):Double{
    var area = 0
    for (shape in shapes){
        if(shape is Rectangle) {
        var rect = shape as Rectangle
        area += (rect.getLength()*rect.getHeight())
}
else if (shape is Circle){
    var circle = shape as Circle
    area += (circle.getRadius()*circle. getRadius ()*Math.PI)
}
else{
    throw new RunTimeExeption(“shape not supported”)    
}
}
return area
}
}

Public interface Shape {
    fun getArea()
}
class Rectangle : Shape {
    private var length
    private var height
    //getters / setters  …
override  fun getArea():Double {
return (length*height)
}
class Circle: Shape {
    private var radius
    //getters / setters  …
override  fun getArea():Double{
return (radius * radius *Math.PI)
}
class AreaFactory{
    fun calculateArea(shapes:ArrayList<String>):Double{
    var area:Double = 0.toDouble()
    for (shape in shapes){
        area += shape.getArea()
}
return area
}   
     }

abstract class Vehicle {
protected var isEngineWorking = false
abstract fun startEngine()
abstract fun stopEngine()
abstract fun moveForward()
abstract fun moveBack()
}
class Car:Vehicle() { 
override fun startEngine() {
println("Engine started") 
isEngineWorking = true
}
override fun stopEngine() {
println("Engine stopped")
 isFngineWorking = false
}
override fun moveForward() {
println("Moving forward")
}
override fun moveBack() {
println("Moving back!")
}
}
class Bicycle:Vehicle(){
override fun startEngine() {
TODO("Not yet implemented")
}
override fun stopEngine() {
TODO("Not yet implemented")
}
override fun moveForward() {
println("Moving forward")
}
override fun moveBack() {
println("Moving back!")
}
}

interface Vehicle {
fun move forward() 
fun moveBack
}
abstract class VehicleWithEngine:Vehicle {
private var isEngineWorking = false
open fun startEngine(){isEngineWorking = true} 
open fun stopEngine(){isEngineWorking = false)
}
class Car:VehicleWithEngine(){ 
override fun startEngine() {
super.startEngine() 
println("Engine started")
}
override fun stopEngine() {
super.stopEngine() 
println("Engine stopped")
}
override fun moveForward() {
println("Moving forward")
}
override fun moveBack() {
println("Moving back!")
}
}
 
class Bicycle:Vehicle{ 
override fun moveForward() {
println("Moving forward")
}
override fun moveBack() { 
println("Moving back!")
}
}

interface Animal {
fun eat() 
fun sleep() 
fun fly()
}
class Cat : Animal { 
override fun eat() {
println("Cat is eating fish")
}
override fun sleep() {
println("Cat is sleeping on its owner's bed")
}
override fun fly() {
TODO ( "Not yet implemented")   //cat can not fly!!
}
}
class Bird : Animal {
override fun eat() {
println("Bird is eating forage")
}
override fun sleep() {
println("Bird is sleeping in the nest")
}
override fun fly(){
println("Bird is flying in so high"
}
}   

interface Animal {
fun eat()
fun sleep()
}
interface FlyingAnimal {
fun fly()
}
class Cat : Animal { 
override fun eat() {
println("Cat is eating fish")
}
override fun sleep() { 
println("Cat is sleeping on its owner's bed")
}
}
class Bird : Animal, FlyingAnimal {
override fun eat() {  
println("Bird is eating forage")
}
override fun sleep() {
println("Bird is sleeping in the nest")
}
override fun fly() {
println("Bird is flying in so high")
}

class AndroidDeveloper { 
fun developerMobileApp(){
println("developing Android Application by using kotlin")
}
}
class IosDeveloper { 
fun developerMobileApp(){
println("developing iOS Application by using swift")
}
}
fun main(){
val androidDeveloper = AndroidDeveloper() 
val iosDeveloper = IosDeveloper()
 
androidDeveloper.developerMobileApp()
iosDeveloper.developerMobileApp()
}

interface MobileDeveloper{
fun developerMobileApp() 
}
class AndroidDeveloper (var mobileService: MobileServices): MobileDeveloper {     override fun developerMobileApp(){ 
println("developing Android Application by using kotlin." +
"application will work with ${mobileService.serviceName}") 
}
enum class MobileServices (var serviceName: String) {
HMS( serviceName: "Huawei Mobile Service"),
GMSC serviceName: "Google Mobile Service"),
BOTH( ServiceName: "Huawei Mobile Service and Google Mobile Service")
}
}
class IosDeveloper : MobileDeveloper {
override fun developerMobileApp({
println("developing iOS Application by using swift")
}
}
fun main{
val developers = arrayListof (AndroidDeveloper (AndroidDeveloper. MobileServices.HMS) , IosDeveloper())
developers.forEach { developer ->
developer.developerMobileApp()
}
}