feat: step1 기능 구현

주스 메이커 클래스 구현
재고 확인 메소드
재고가 있는지 확인하는 메소드
과일 소비하는 메소드
주스 만들기 메소드
과일 재고 추가 메소드

JuiceMaker/JuiceMaker/JuiceMaker.swift

@@ -6,4 +6,55 @@
 
 import Foundation
 
-/// 쥬스 메이커 타입 
+enum Fruit: Int, CaseIterable {
+    case strawberry, banana, pineapple, kiwi, mango
+
+    var index: Int {
+        return self.rawValue
+    }
+}
+
+enum FruitJuice {
+    case strawberry, banana, kiwi, pineapple, strawberryBanana, mango, mangoKiwi
+}
+
+class JuiceMaker {
+    private var fruitStocks = [Int](repeating: 10, count: Fruit.allCases.count)
+
+    func checkStock(fruit: Fruit) -> Int {
+        return fruitStocks[fruit.index]
+    }
+    func checkStockAvailable(fruit: Fruit, stock: Int) -> Bool {
+        if (checkStock(fruit: fruit) < stock) {
+            return false
+        }
+        return true
+    }
+    func consumeFriut(fruit: Fruit, stock: Int) {
+        fruitStocks[fruit.index] -= stock
+    }
+    func makeFruitJuice(juice: FruitJuice) {
+        switch juice {
+        case .strawberry:
+            consumeFriut(fruit: .strawberry, stock: 16)
+        case .banana:
+            consumeFriut(fruit: .banana, stock: 2)
+        case .kiwi:
+            consumeFriut(fruit: .kiwi, stock: 3)
+        case .pineapple:
+            consumeFriut(fruit: .pineapple, stock: 2)
+        case .strawberryBanana:
+            consumeFriut(fruit: .strawberry, stock: 10)
+            consumeFriut(fruit: .banana, stock: 1)
+        case .mango:
+            consumeFriut(fruit: .mango, stock: 3)
+        case .mangoKiwi:
+            consumeFriut(fruit: .mango, stock: 2)
+            consumeFriut(fruit: .kiwi, stock: 1)
+        }
+    }
+    func addStock(fruit: Fruit) {
+        fruitStocks[fruit.index] += 1
+    }
+}
+

JuiceMaker/JuiceMaker/ViewController.swift

@@ -11,8 +11,14 @@ class ViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
         // Do any additional setup after loading the view.
+
+        let j = JuiceMaker()
+        print(j.fruitStocks)
+
+        j.consumeFriut(fruit: .banana, stock: 12)
+
+        print(j.fruitStocks)
+
     }
-
-
 }