feat : Design Pattern - 미디에이터(Mediator) 패턴 구현

놀이터(예제 코드 작성)/solid-design-pattern-sample/README.md

@@ -124,6 +124,12 @@
 
 ### 미디에이터(Mediator) 패턴
 
+#### 구현 요구사항
+
+- 가전제품의 전원을 제어한다.
+- 가전제품의 전원은 하나만 켤 수 있고, 하나를 켜면 나머지는 모두 꺼진다.
+- 가전제품을 켤 경우, 해당 가전제품의 이름을 메시지로 전송한다.
+
 ### 파사드(Facade) 패턴
 
 #### 구현 요구사항

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/AirConditioner.kt

@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class AirConditioner(override val name: String) : HomeAppliance {
+    override fun turnOn() {
+        println("${name}을 켭니다.")
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/HomeAppliance.kt

@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+interface HomeAppliance {
+    val name: String
+
+    fun turnOn()
+
+    fun turnOff()
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/HomeApplianceApplication.kt

@@ -0,0 +1,12 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class HomeApplianceApplication
+
+fun main() {
+    val airConditioner = AirConditioner("에어컨")
+    val television = Television("텔레비전")
+    val messageSender = MessageSender()
+    val remoteControl = RemoteControl(listOf(airConditioner, television), messageSender)
+
+    remoteControl.turnOn(airConditioner)
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/MessageSender.kt

@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class MessageSender {
+    fun sendMessage(homeAppliance: HomeAppliance) {
+        println("메시지 : ${homeAppliance.name}을 켰습니다.")
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/RemoteControl.kt

@@ -0,0 +1,17 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class RemoteControl(
+    private val homeAppliances: List<HomeAppliance>,
+    private val messageSender: MessageSender
+) {
+    fun turnOn(homeAppliance: HomeAppliance) {
+        homeAppliances.filterNot { it == homeAppliance }
+            .forEach { it.turnOff() }
+        homeAppliance.turnOn()
+        messageSender.sendMessage(homeAppliance)
+    }
+
+    fun turnOff(homeAppliance: HomeAppliance) {
+        homeAppliance.turnOff()
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/after/Television.kt

@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.after
+
+class Television(override val name: String) : HomeAppliance {
+    override fun turnOn() {
+        println("${name}을 켭니다.")
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/AirConditioner.kt

@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class AirConditioner(override val name: String) : HomeAppliance {
+    override fun turnOnBut(homeAppliance: HomeAppliance, messageSender: MessageSender) {
+        homeAppliance.turnOff()
+        println("${name}을 켭니다.")
+        messageSender.sendMessage(this)
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/HomeAppliance.kt

@@ -0,0 +1,9 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+interface HomeAppliance {
+    val name: String
+
+    fun turnOnBut(homeAppliance: HomeAppliance, messageSender: MessageSender)
+
+    fun turnOff()
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/HomeApplianceApplication.kt

@@ -0,0 +1,11 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class HomeApplianceApplication
+
+fun main() {
+    val airConditioner = AirConditioner("에어컨")
+    val television = Television("텔레비전")
+    val messageSender = MessageSender()
+
+    airConditioner.turnOnBut(television, messageSender)
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/MessageSender.kt

@@ -0,0 +1,7 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class MessageSender {
+    fun sendMessage(homeAppliance: HomeAppliance) {
+        println("메시지 : ${homeAppliance.name}을 켰습니다.")
+    }
+}

놀이터(예제 코드 작성)/solid-design-pattern-sample/src/main/kotlin/com/banjjoknim/soliddesignpatternsample/designpattern/mediator/before/Television.kt

@@ -0,0 +1,13 @@
+package com.banjjoknim.soliddesignpatternsample.designpattern.mediator.before
+
+class Television(override val name: String) : HomeAppliance {
+    override fun turnOnBut(homeAppliance: HomeAppliance, messageSender: MessageSender) {
+        homeAppliance.turnOff()
+        println("${name}을 켭니다.")
+        messageSender.sendMessage(this)
+    }
+
+    override fun turnOff() {
+        println("${name}을 끕니다.")
+    }
+}