complete

src/TestFile.java

+import com.restaurant.*;
+
+public class TestFile {
+    public static void main(String[] args) {
+        Restaurant restaurant = new Restaurant("Java AP Lab",3000);
+        Ingredient i1 = new Ingredient(1, "carrot", 20);
+        Ingredient i2 = new Ingredient(2, "meat", 50);
+        Ingredient i3 = new Ingredient(3, "bread", 10);
+        Ingredient i4 = new Ingredient(4, "potato", 20);
+        Ingredient i5 = new Ingredient(4, "onion", 30);
+        Food f1 = new Food(1, "ab-goosht");
+        f1.addIngredient(i3, 2);
+        f1.addIngredient(i1, 1);
+        f1.addIngredient(i2, 1);
+        f1.addIngredient(i4, 1);
+        restaurant.addFood(f1);
+        Food f2 = new Food(2, "kabab");
+        f2.addIngredient(i2, 4);
+        f2.addIngredient(i5, 5);
+        restaurant.addFood(f2);
+        Customer customer = new Customer(1, "gholi");
+        restaurant.addCustomer(customer);
+        Food[] foods = new Food[]{f1, f1};
+        Order order1 = new Order(1, customer, foods);
+        order1.addFood(f1, 2);
+        restaurant.prepareOrder(order1);
+        restaurant.acceptPayment(customer);
+        System.out.println(restaurant.getFund());
+        System.out.println(restaurant.getNumberOfFoodsDelivered());
+    }
+}

src/com/restaurant/Customer.java

+package com.restaurant;
+
+public class Customer {
+    private int id;
+    private String name;
+    private Order order;
+
+    public Customer(int id, String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public Order getOrder() {
+        return order;
+    }
+
+    public void setOrder(Order order) {
+        this.order = order;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+}
+

src/com/restaurant/Food.java

+package com.restaurant;
+
+import java.util.ArrayList;
+
+public class Food {
+
+    private int id;
+    private String name;
+    private int price;
+    private ArrayList<Ingredient> ingredients;
+    private ArrayList<Integer> ingredientsAmount;
+
+    public Food (int id, String name) {
+        this.id = id;
+        this.name = name;
+        price = 0;
+        ingredients = new ArrayList<Ingredient>();
+        ingredientsAmount = new ArrayList<Integer>();
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getPrice(){
+        return price;
+    }
+
+
+    public void addIngredient(Ingredient ingredient, int amount) {
+        ingredients.add(ingredient);
+        ingredientsAmount.add(amount);
+        price += amount * ingredient.getPrice();
+    }
+
+    @Override
+    public String toString() {
+        return this.name;
+    }
+}
+

src/com/restaurant/Ingredient.java

+package com.restaurant;
+
+public class Ingredient {
+    private int id;
+    private String name;
+    private int price;
+
+    public Ingredient (int id, String name, int price) {
+        this.id = id;
+        this.name = name;
+        this.price = price;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+}
+

src/com/restaurant/Order.java

+package com.restaurant;
+
+public class Order {
+    private int id;
+    private Customer customer;
+    private Food[] foods;
+    private int price;
+
+    public Order(int id, Customer customer, Food[] foods) {
+        this.id = id;
+        this.customer = customer;
+        this.foods = foods;
+
+        for (Food food : foods) {
+            price += food.getPrice();
+        }
+        price *= 1.4;
+        customer.setOrder(this);
+    }
+
+    public Food[] getFoods() {
+        return foods;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public void addFood(Food food, int amount){
+        Food[] temp = new Food[foods.length + amount];
+        for (int i = 0; i < foods.length; i++) {
+            temp[i] = foods[i];
+        }
+        for (int i = 0; i < amount; i++) {
+            temp[foods.length + i] = food;
+        }
+        foods = temp;
+        temp = null;
+        price = 0;
+        for(int j = 0 ; j < foods.length ; j++){
+            price += 1.4*foods[j].getPrice();
+        }
+    }
+
+    public Customer getCustomer() {
+        return customer;
+    }
+
+}

src/com/restaurant/Restaurant.java

+package com.restaurant;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+
+public class Restaurant {
+
+    private final ArrayList<Customer> currentCustomers;
+    private String name;
+    private int fund;
+    private ArrayList<Food> foods;
+    private ArrayList<Customer> customers;
+
+    public Restaurant(String name, int fund) {
+        this.name = name;
+        this.fund = fund;
+        customers = new ArrayList<>();
+        currentCustomers = new ArrayList<>();
+        this.numOrdered = new HashMap<>();
+        this.foods = new ArrayList<>();
+    }
+
+    public HashMap<Food, Integer> numOrdered = new HashMap<>();
+
+    public Restaurant(int fund) {
+        this("JAVA Coffee house", fund);
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getFund() {
+        return fund;
+    }
+
+    public ArrayList<Food> getFoods() {
+        ArrayList<Food> foodArrayList = new ArrayList<>();
+        int size = foods.size();
+        for (int i = 0; i < size; i++) {
+            int max = 0;
+            Food chosenFood = foods.get(0);
+            for (Food food : foods){
+                if (numOrdered.get(food) > max){
+                    chosenFood = food;
+                    max = numOrdered.get(food);
+                }
+            }
+            foodArrayList.add(chosenFood);
+            foods.remove(chosenFood);
+        }
+        foods = foodArrayList;
+        return foodArrayList;
+    }
+
+    public void addFood(Food food){
+        numOrdered.put(food, 0);
+        foods.add(food);
+    }
+
+    public ArrayList<Customer> getCustomers() {
+        return customers;
+    }
+
+    public ArrayList<Customer> getCurrentCustomers() {
+        return currentCustomers;
+    }
+
+    public void addCustomer(Customer customer) {
+        customers.add(customer);
+    }
+
+    public void prepareOrder(Order m) {
+        int cost = 0;
+        for (Food food : m.getFoods()) {
+            int num = numOrdered.get(food);
+            numOrdered.put(food, num + 1);
+            cost += food.getPrice();
+        }
+        fund -= cost;
+        currentCustomers.add(m.getCustomer());
+    }
+
+    public void acceptPayment(Customer customer) {
+        int menuCost = customer.getOrder().getPrice();
+        currentCustomers.remove(customer);
+        fund += menuCost * 0.9;
+        totalNumOfFood += customer.getOrder().getFoods().length;
+    }
+
+    private int totalNumOfFood = 0;
+
+    public int getNumberOfFoodsDelivered(){
+        return totalNumOfFood;
+    }
+
+    @Override
+    public String toString() {
+        String toReturn = "";
+        toReturn += this.name + "\n";
+        toReturn += this.fund + "\n";
+        int totNumSold = 0;
+        for (int num: numOrdered.values()) {
+            totNumSold += num;
+        }
+        toReturn += currentCustomers.size() + "\n";
+        toReturn += customers.size() + "\n";
+        for (Food food: getFoods())
+            toReturn += food + "\n";
+        toReturn += totNumSold + "\n";
+        return toReturn.trim();
+    }
+}