Implemented homework

src/main/kotlin/ru/otus/cars/Car.kt

@@ -1,5 +1,7 @@
 package ru.otus.cars
 
+import ru.otus.cars.fuel.TankMouth
+
 /**
  * Машина целиком
  */
@@ -28,4 +30,6 @@ interface Car : CarInput {
      * Внутренний статический класс - номерой знак
      */
     data class Plates(val number: String, val region: Int)
+
+    val tankMouth: TankMouth
 }

src/main/kotlin/ru/otus/cars/CarFactory.kt

@@ -34,8 +34,8 @@ object Togliatti : CarFactory {
 
     override fun buildCar(builder: CarBuilder, plates: Car.Plates): Car {
         return when (builder) {
-            is Vaz2107.Companion -> return buildVaz2107(plates)
-            is Vaz2108.Companion -> return buildVaz2108(plates)
+            is Vaz2107.Companion -> buildVaz2107(plates)
+            is Vaz2108.Companion -> buildVaz2108(plates)
         }
     }
 }

src/main/kotlin/ru/otus/cars/CarOutput.kt

@@ -8,4 +8,6 @@ interface CarOutput {
      * Скажи текущую скорость
      */
     fun getCurrentSpeed(): Int
+
+    fun getFuelContents(): Int
 }

src/main/kotlin/ru/otus/cars/Taz.kt

@@ -1,5 +1,7 @@
 package ru.otus.cars
 
+import ru.otus.cars.fuel.TankMouth
+
 object Taz: Car {
     /**
      * Номерной знак
@@ -36,4 +38,7 @@ object Taz: Car {
     override fun wheelToLeft(degrees: Int) {
         throw NotImplementedError("Руля нет")
     }
+
+    override val tankMouth: TankMouth
+        get() = throw NotImplementedError("Взрыв")
 }

src/main/kotlin/ru/otus/cars/Vaz2107.kt

@@ -1,5 +1,8 @@
 package ru.otus.cars
 
+import ru.otus.cars.fuel.Tank
+import ru.otus.cars.fuel.TankMouth
+import ru.otus.cars.fuel.VazTank
 import kotlin.random.Random
 
 /**
@@ -17,9 +20,18 @@ class Vaz2107 private constructor(color: String) : VazPlatform(color) {
             }
         }
 
+        private fun getTank() : Tank{
+            val tank = VazTank()
+            val tankMouth = TankMouth.LpgTankMouth(tank)
+            tank.mouth = tankMouth
+            return tank
+        }
+
         override fun build(plates: Car.Plates): Vaz2107 = Vaz2107("Зеленый").apply {
             this.engine = getRandomEngine()
             this.plates = plates
+            this.tank = getTank()
+            this.tankMouth = this.tank.mouth
         }
 
         /**
@@ -40,6 +52,12 @@ class Vaz2107 private constructor(color: String) : VazPlatform(color) {
     override lateinit var engine: VazEngine
         private set
 
+    override lateinit var tank: Tank
+        private set
+
+    override lateinit var tankMouth: TankMouth
+        private set
+
     /**
      * Семерка едет так
      */
@@ -74,5 +92,9 @@ class Vaz2107 private constructor(color: String) : VazPlatform(color) {
         override fun getCurrentSpeed(): Int {
             return [email protected]
         }
+
+        override fun getFuelContents(): Int {
+            return [email protected]()
+        }
     }
 }

src/main/kotlin/ru/otus/cars/Vaz2108.kt

@@ -1,5 +1,8 @@
 package ru.otus.cars
 
+import ru.otus.cars.fuel.Tank
+import ru.otus.cars.fuel.TankMouth
+import ru.otus.cars.fuel.VazTank
 import kotlin.random.Random
 
 /**
@@ -18,9 +21,18 @@ class Vaz2108 private constructor(color: String) : VazPlatform(color) {
             }
         }
 
+        private fun getTank() : Tank {
+            val tank = VazTank()
+            val tankMouth = TankMouth.PetrolTankMouth(tank)
+            tank.mouth = tankMouth
+            return tank
+        }
+
         override fun build(plates: Car.Plates): Vaz2108 = Vaz2108("Красный").apply {
             this.engine = getRandomEngine()
             this.plates = plates
+            this.tank = getTank()
+            this.tankMouth = this.tank.mouth
         }
 
         fun alignWheels(vaz2108: Vaz2108) {
@@ -38,6 +50,12 @@ class Vaz2108 private constructor(color: String) : VazPlatform(color) {
     override lateinit var engine: VazEngine
         private set
 
+    override lateinit var tank: Tank
+        private set
+
+    override lateinit var tankMouth: TankMouth
+        private set
+
     /**
      * Восьмерка едет так
      */
@@ -78,5 +96,9 @@ class Vaz2108 private constructor(color: String) : VazPlatform(color) {
         override fun getCurrentSpeed(): Int {
             return [email protected]
         }
+
+        override fun getFuelContents(): Int {
+            return [email protected]()
+        }
     }
 }

src/main/kotlin/ru/otus/cars/VazPlatform.kt

@@ -1,5 +1,7 @@
 package ru.otus.cars
 
+import ru.otus.cars.fuel.Tank
+
 abstract class VazPlatform(override val color: String) : Car {
     // Положение руля. Доступно только внутри класса и наследникам
     protected var wheelAngle: Int = 0 // Положение руля
@@ -14,6 +16,8 @@ abstract class VazPlatform(override val color: String) : Car {
 
     // Абстрактное свойство двигателя
     abstract val engine: VazEngine
+
+    abstract val tank: Tank
 }
 
 // Перечисление двигателей ВАЗ

src/main/kotlin/ru/otus/cars/fuel/Tank.kt

@@ -0,0 +1,8 @@
+package ru.otus.cars.fuel
+
+interface Tank {
+    val mouth: TankMouth
+    fun getContents(): Int
+    fun receiveFuel(liters: Int)
+}
+

src/main/kotlin/ru/otus/cars/fuel/TankMouth.kt

@@ -0,0 +1,19 @@
+package ru.otus.cars.fuel
+
+sealed class TankMouth(private val tank: Tank) {
+    fun open() {
+        println("Горловина открыта")
+    }
+
+    fun close() {
+        println("Горловина закрыта")
+    }
+
+    fun fill(liters: Int) {
+        tank.receiveFuel(liters)
+    }
+
+    class LpgTankMouth(tank: Tank) : TankMouth(tank)
+    class PetrolTankMouth(tank: Tank) : TankMouth(tank)
+}
+

src/main/kotlin/ru/otus/cars/fuel/VazTank.kt

@@ -0,0 +1,14 @@
+package ru.otus.cars.fuel
+
+class VazTank : Tank {
+    override lateinit var mouth: TankMouth
+
+    private var fuelAmount: Int = 0
+
+    override fun getContents(): Int = fuelAmount
+
+    override fun receiveFuel(liters: Int) {
+        fuelAmount += liters
+    }
+
+}

src/main/kotlin/ru/otus/cars/gasstation/GasStation.kt

@@ -0,0 +1,31 @@
+package ru.otus.cars.gasstation
+
+import ru.otus.cars.Car
+import ru.otus.cars.fuel.TankMouth
+
+class GasStation {
+    fun fillUpCar(car: Car, liters: Int){
+        try {
+            when(car.tankMouth){
+                is TankMouth.LpgTankMouth -> fillWithLpg(car, liters)
+                is TankMouth.PetrolTankMouth -> fillWithPetrol(car, liters)
+            }
+        } catch (e: Error) {
+            println("Что-то пошло не там при заправке: ${e.message}")
+        }
+    }
+
+    private fun fillWithLpg(car: Car, liters: Int) {
+        car.tankMouth.open()
+        car.tankMouth.fill(liters)
+        car.tankMouth.close()
+        println("Заправил $liters газа")
+    }
+
+    private fun fillWithPetrol(car: Car, liters: Int) {
+        car.tankMouth.open()
+        car.tankMouth.fill(liters)
+        car.tankMouth.close()
+        println("Заправил $liters бензина")
+    }
+}

src/main/kotlin/ru/otus/cars/main.kt

@@ -1,6 +1,10 @@
 package ru.otus.cars
 
+import ru.otus.cars.gasstation.GasStation
+
 fun main() {
+    println("\n===> refueling")
+    refueling()
     println("\n===> drive cars...")
     driveCars()
     println("\n===> inner test...")
@@ -90,4 +94,31 @@ fun repairEngine(car: VazPlatform) {
         is VazEngine.LADA_2107 -> println("Чистка карбюратора у двигателя объемом ${car.engine.volume} куб.см у машины $car")
         is VazEngine.SAMARA_2108 -> println("Угол зажигания у двигателя объемом ${car.engine.volume} куб.см у машины $car")
     }
+}
+
+fun refueling() {
+    val vaz2107 = Vaz2107.build(Car.Plates("123", 77))
+    val vaz2108 = Vaz2108.build(Car.Plates("321", 78))
+    val taz = Taz
+
+    println("Fuel level of VAZ2107: ${vaz2107.VazOutput().getFuelContents()}")
+    println("Fuel level of VAZ2108: ${vaz2108.VazOutput().getFuelContents()}")
+    try {
+        println("Fuel level of TAZ: ${taz.carOutput.getFuelContents()}")
+    } catch (e: Error) {
+        println("Can't get TAZ's fuel level: ${e.message}")
+    }
+
+    val gasStation = GasStation()
+    gasStation.fillUpCar(vaz2107, 60)
+    gasStation.fillUpCar(vaz2108, 40)
+    gasStation.fillUpCar(taz, 10)
+
+    println("Fuel level of VAZ2107: ${vaz2107.VazOutput().getFuelContents()}")
+    println("Fuel level of VAZ2108: ${vaz2108.VazOutput().getFuelContents()}")
+    try {
+        println("Fuel level of TAZ: ${taz.carOutput.getFuelContents()}")
+    } catch (e: Error) {
+        println("Can't get TAZ's fuel level: ${e.message}")
+    }
 }