Initial commit

src/machine/CoffeeMachine.java

@@ -0,0 +1,208 @@
+package machine;
+
+import java.util.Scanner;
+
+public class CoffeeMachine {
+
+    int water = 400;
+    int milk = 540;
+    int coffeeBeans = 120;
+    int cups = 9;
+    int money = 550;
+    StateCoffeeMachine stateCoffeeMachine = StateCoffeeMachine.WAITING;
+    boolean isContinue = true;
+
+    public CoffeeMachine() {
+        System.out.println("Write action (buy, fill, take, remaining, exit):");
+    }
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        CoffeeMachine coffeeMachine = new CoffeeMachine();
+        String action;
+
+        do {
+            action = scanner.nextLine();
+            coffeeMachine.input(action);
+        }while(coffeeMachine.stateCoffeeMachine != StateCoffeeMachine.DOWN);
+    }
+
+    public void input(String petition) {
+        switch (stateCoffeeMachine) {
+            case WAITING:
+                switch (petition) {
+                    case "buy":
+                        System.out.println("What do you want to buy? 1 - espresso, 2 - latte, 3 - cappuccino, back - to main menu:");
+                        stateCoffeeMachine = StateCoffeeMachine.BUYING;
+                        break;
+                    case "fill":
+                        System.out.println("Write how many ml of water do you want to add:");
+                        stateCoffeeMachine = StateCoffeeMachine.FILLING_WATER;
+                        break;
+                    case "take":
+                        System.out.println("I gave you $" + money);
+                        money = 0;
+                        break;
+                    case "exit":
+                        stateCoffeeMachine = StateCoffeeMachine.DOWN;
+                        break;
+                    case "remaining":
+                        printCurrentQuantities();
+                        System.out.println("Write action (buy, fill, take, remaining, exit):");
+                        break;
+                    default:
+                        System.out.println("Unsupported action.");
+                        break;
+                }
+                break;
+            case FILLING_WATER:
+                water += Integer.parseInt(petition);
+                System.out.println("Write how many ml of milk do you want to add:");
+                stateCoffeeMachine = StateCoffeeMachine.FILLING_MILK;
+                break;
+
+            case FILLING_MILK:
+                milk += Integer.parseInt(petition);
+                System.out.println("Write how many grams of coffee beans do you want to add:");
+                stateCoffeeMachine = StateCoffeeMachine.FILLING_COFFEE;
+                break;
+
+            case FILLING_COFFEE:
+                coffeeBeans += Integer.parseInt(petition);
+                stateCoffeeMachine = StateCoffeeMachine.FILLING_CUPS;
+                System.out.println("Write how many disposable cups of coffee do you want to add:");
+                break;
+
+            case FILLING_CUPS:
+                cups += Integer.parseInt(petition);
+                System.out.println("Write action (buy, fill, take, remaining, exit):");
+                stateCoffeeMachine = StateCoffeeMachine.WAITING;
+                break;
+            case BUYING:
+                buyCoffee(petition);
+                break;
+            case DOWN:
+                break;
+            default:
+                System.out.println("This maybe a problem");
+                break;
+        }
+    }
+
+    private void buyCoffee(String type) {
+
+        CoffeeTypes coffeeType;
+
+        switch (type) {
+            case "1":
+                coffeeType = CoffeeTypes.ESPRESSO;
+                serveCoffee(coffeeType);
+                break;
+            case "2":
+                coffeeType = CoffeeTypes.LATTE;
+                serveCoffee(coffeeType);
+                break;
+            case "3":
+                coffeeType = CoffeeTypes.CAPPUCCINO;
+                serveCoffee(coffeeType);
+                break;
+            case "back":
+                System.out.println("Write action (buy, fill, take, remaining, exit):");
+                stateCoffeeMachine = StateCoffeeMachine.WAITING;
+                break;
+            default:
+                System.out.println("Action not supported");
+                break;
+        }
+
+    }
+
+    private void serveCoffee(CoffeeTypes typeCoffee) {
+        if (cupsWater(typeCoffee) == 0) {
+            System.out.println("Sorry, not enough water!");
+        } else if (cupsMilk(typeCoffee) == 0) {
+            System.out.println("Sorry, not enough milk!");
+        } else if (cupsCoffee(typeCoffee) == 0) {
+            System.out.println("Sorry, not enough coffee beans!");
+        } else if (cups == 0) {
+            System.out.println("Sorry, not enough cups!");
+        } else {
+            water -= typeCoffee.water;
+            milk -= typeCoffee.milk;
+            coffeeBeans -= typeCoffee.coffeeBeans;
+            money += typeCoffee.cost;
+            cups -= 1;
+            System.out.println("I have enough resources, making you a coffee!");
+        }
+
+        System.out.println("Write action (buy, fill, take, remaining, exit):");
+        stateCoffeeMachine = StateCoffeeMachine.WAITING;
+
+
+    }
+
+    private void printCurrentQuantities() {
+        System.out.println("The coffee machine has:");
+        System.out.println(water + " of water");
+        System.out.println(milk + " of milk");
+        System.out.println(coffeeBeans + " of coffee beans");
+        System.out.println(cups + " of disposable cups");
+        System.out.println(money + " of money");
+    }
+
+    private int cupsMilk(CoffeeTypes typeOfCoffee) {
+        return milk / (typeOfCoffee.getMilk() == 0 ? 1 : typeOfCoffee.getMilk());
+    }
+
+    private int cupsWater(CoffeeTypes typeOfCoffee) {
+        return water / (typeOfCoffee.getWater() == 0 ? 1 : typeOfCoffee.getWater());
+    }
+
+    private int cupsCoffee(CoffeeTypes typeOfCoffee) {
+        return coffeeBeans / (typeOfCoffee.getCoffeeBeans() == 0 ? 1 : typeOfCoffee.getCoffeeBeans());
+    }
+}
+
+enum StateCoffeeMachine {
+    WAITING,
+    BUYING,
+    FILLING_WATER,
+    FILLING_MILK,
+    FILLING_COFFEE,
+    FILLING_CUPS,
+    DOWN;
+}
+
+enum CoffeeTypes {
+    ESPRESSO(250, 0, 16, 4),
+    LATTE(350, 75, 20, 7),
+    CAPPUCCINO(200, 100, 12, 6);
+
+    int water;
+    int milk;
+    int coffeeBeans;
+    int cost;
+
+    CoffeeTypes(int water, int milk, int coffeeBeans, int cost) {
+        this.water = water;
+        this.milk = milk;
+        this.coffeeBeans = coffeeBeans;
+        this.cost = cost;
+    }
+
+    public int getWater() {
+        return water;
+    }
+
+    public int getMilk() {
+        return milk;
+    }
+
+    public int getCoffeeBeans() {
+        return coffeeBeans;
+    }
+
+    public int getCost() {
+        return cost;
+    }
+}