Merge pull request #1 from Fezravien/step1-fezz

Step1 fezz

JuiceMaker/JuiceMaker/JuiceMaker.swift

@@ -2,8 +2,89 @@
 //  JuiceMaker - JuiceMaker.swift
 //  Created by yagom. 
 //  Copyright © yagom academy. All rights reserved.
-// 
+//
 
 import Foundation
 
-/// 쥬스 메이커 타입 
+enum MakerError: Error {
+    case nonStock
+    case unknown
+}
+enum Furits {
+    case strawberry, banana, pineapple, kiwi, mango
+}
+enum Juices {
+    case strawberryJuice, bananaJuice, pineappleJuice, kiwiJuice, mangoJuice, strawberryBananaJuice, mangoKiwiJuice
+
+    var recipe : [Furits : Int] {
+        switch self {
+        case .strawberryJuice:
+            return [.strawberry : 16]
+        case .bananaJuice:
+            return [.banana : 2]
+        case .pineappleJuice:
+            return [.pineapple : 2]
+        case .kiwiJuice:
+            return [.kiwi : 3]
+        case .mangoJuice:
+            return [.mango : 3]
+        case .strawberryBananaJuice:
+            return [.strawberry : 10, .banana : 1]
+        case .mangoKiwiJuice:
+            return [.mango : 2, .kiwi : 1]
+        }
+    }
+}
+
+struct Fruit {
+    let whatFruit: Furits
+    fileprivate var thisFruitAmount: Int
+    init(whatFruit: Furits, thisFruitAmount: Int = 100) {
+        self.whatFruit = whatFruit
+        self.thisFruitAmount = thisFruitAmount
+    }
+
+    func isCheckedStock(needFruitAmount: Int) -> Bool {
+        return thisFruitAmount >= needFruitAmount
+    }
+    mutating func useStock(useableFruitAmount: Int) {
+        thisFruitAmount -= useableFruitAmount
+    }
+    mutating func addStock() {
+        thisFruitAmount += 1
+    }
+}
+
+protocol ReadOnlyJuiceMaker {
+    var fruitStorage: [Furits:Fruit] { get }
+}
+
+class JuiceMaker: ReadOnlyJuiceMaker {
+    var fruitStorage: [Furits : Fruit] = [.strawberry : Fruit(whatFruit: .strawberry),
+                                          .banana : Fruit(whatFruit: .banana),
+                                          .pineapple : Fruit(whatFruit: .pineapple),
+                                          .kiwi : Fruit(whatFruit: .kiwi),
+                                          .mango : Fruit(whatFruit: .mango)]
+
+    func makeJuice(juice: Juices) throws {
+        do {
+            try juice.recipe.forEach {
+                guard var whatFruit = fruitStorage[$0.key], whatFruit.isCheckedStock(needFruitAmount: $0.value) else {
+                    throw MakerError.nonStock
+                }
+                whatFruit.useStock(useableFruitAmount: $0.value)
+            }
+        } catch {
+            print("\(juice) 재고 부족")
+        }
+    }
+    func totalStock() -> [Furits:Fruit] {
+        return fruitStorage
+    }
+    func fruitStock(fruit: Furits) throws -> Int {
+        guard let fruitStock = fruitStorage[fruit] else {
+            throw MakerError.nonStock
+        }
+        return fruitStock.thisFruitAmount
+    }
+}

JuiceMaker/JuiceMaker/ViewController.swift

@@ -9,8 +9,7 @@ import UIKit
 class ViewController: UIViewController {
 
     override func viewDidLoad() {
-        super.viewDidLoad()
-        // Do any additional setup after loading the view.
+
     }