Asef

README.md

@@ -8,5 +8,4 @@
 
 ### در نهایت با ارسال پول ریکوئست به صفحه تمرین کد شما تصحیح خواهد شد.
 
-### ددلاین تمرین تا روز یکشنبه 9 اردیبهشت 1403 ساعت 11.5 صبح می باشد.
 ### موفق باشید :)

Restaurant/.gitignore

@@ -0,0 +1,29 @@
+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

Restaurant/Restaurant.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

Restaurant/src/Address.java

@@ -0,0 +1,44 @@
+public class Address {
+
+    private double latitude;
+    private double longitude;
+    private String written_address;
+
+    public Address(double latitude, double longitude, String writtenAddress) {
+        this.latitude = latitude;
+        this.longitude = longitude;
+        this.written_address = writtenAddress;
+    }
+
+    public double getLatitude() {
+        return latitude;
+    }
+
+    public void setLatitude(double latitude) {
+        this.latitude = latitude;
+    }
+
+    public double getLongitude() {
+        return longitude;
+    }
+
+    public void setLongitude(double longitude) {
+        this.longitude = longitude;
+    }
+
+    public String getWritten_address() {
+        return written_address;
+    }
+
+    public void setWrittenAddress(String written_address) {
+        this.written_address = written_address;
+    }
+
+    public double distanceFrom(Address Address2) {
+        double la_distance = this.latitude - Address2.latitude;
+        double lo_distance = this.longitude - Address2.longitude;
+        double distance = Math.sqrt(Math.pow(la_distance, 2) + Math.pow(lo_distance, 2));
+
+        return Math.round(distance * 100000.0) / 100000.0;
+    }
+}

Restaurant/src/Customer.java

@@ -0,0 +1,35 @@
+public class Customer {
+    private static int newId = 1;
+    private final int id;
+    private String name;
+    private Address address;
+
+    public Customer(String name, Address address) {
+        this.id = newId;
+        newId++;
+        this.name = name;
+        this.address = address;
+    }
+
+    public int getCustomerNumber() {
+        return id;
+    }
+
+    // no set for customer number as it is final
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Address getAddress() {
+        return address;
+    }
+
+    public void setAddress(Address address) {
+        this.address = address;
+    }
+}

Restaurant/src/Food.java

@@ -0,0 +1,26 @@
+import java.util.Vector;
+
+public class Food {
+
+    private static Vector<Food> menu = new Vector<>();
+    private final String name;
+    private final int price;
+
+    public Food(String name, int price) {
+        this.name = name;
+        this.price = price;
+        menu.add(this);
+    }
+
+    public static Vector<Food> getMenu() {
+        return menu;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+}

Restaurant/src/Invoice.java

@@ -0,0 +1,75 @@
+import java.util.Vector;
+
+public class Invoice {
+
+    private static final float tax_rate = 0.094f;
+    private int state;
+    private final Customer customer;
+    private final Vector<Item> items;
+    private float totalPrice;
+
+    public Invoice(Customer customer) {
+        this.state = -1;
+        this.customer = customer;
+        this.items = new Vector<>();
+        this.totalPrice = 0.0f;
+    }
+
+    public int getState() {
+        return state;
+    }
+
+    public Customer getCustomer() {
+        return customer;
+    }
+
+    public boolean addItem(Item item) {
+        if (state == -1) {
+            items.add(item);
+            calculateTotalPrice();
+            return true;
+        }
+        else {
+            return false;
+        }
+    }
+
+    public boolean removeItem(Item item) {
+        int i = 0;
+        if (state == -1) {
+            for (Item currItem : items) {
+                if (currItem.getFood().equals(item.getFood())) {
+                    items.remove(i);
+                    calculateTotalPrice();
+                    return true;
+                }
+                i++;
+            }
+        }
+        return false;
+    }
+
+    public void nextStage() {
+        state++;
+
+    }
+
+    public Vector<Item> getItems() {
+        return items;
+    }
+
+    public int getTotalPrice() {
+        return (int) Math.ceil(totalPrice);
+    }
+
+    private void calculateTotalPrice() {
+        totalPrice = 0.0f;
+        for (Item item : items) {
+            // add up all prices
+            totalPrice += item.getCount() * item.getFood().getPrice();
+        }
+        // totalprice + calculated tax
+        totalPrice += totalPrice * tax_rate;
+
+    }
+}

Restaurant/src/Item.java

@@ -0,0 +1,31 @@
+public class Item {
+
+    private final Food food;
+    private final int count;
+    private final String description;
+
+    public Item(Food food, int count, String description) {
+        this.food = food;
+        this.count = count;
+        this.description = description;
+    }
+
+    public Item(Food food, int count) {
+        this.food = food;
+        this.count = count;
+        // empty
+        this.description = "-";
+    }
+
+    public Food getFood() {
+        return food;
+    }
+
+    public int getCount() {
+        return count;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+}

Restaurant/src/Main.java

@@ -0,0 +1,51 @@
+public static void main(String[] args) {
+    Address a1 = new Address(2, 3, "Lahijan");
+    Address a2 = new Address(5, 6, "Tehran");
+
+    System.out.println("\n--------------------------------------\n");
+    System.out.println("Distance From Address a1 to a2 is: " + a1.distanceFrom(a2));
+    System.out.println("\n--------------------------------------\n");
+
+    Customer c1 = new Customer("MAMAD", a1);
+    Customer c2 = new Customer("ALI", a2);
+
+    System.out.println("First Customer's ID: " + c1.getCustomerNumber());
+    System.out.println("Second Customer's ID: " + c2.getCustomerNumber());
+
+    Food f1 = new Food("BURGER", 130);
+    Food f2 = new Food("PIZZA", 200);
+    Food f3 = new Food("PASTA", 110);
+
+    System.out.println("\n--------------------------------------\n");
+
+    for (int i = 0; i < Food.getMenu().size(); i++) {
+        System.out.println("Food Name: " + Food.getMenu().get(i).getName());
+    }
+
+    System.out.println("\n--------------------------------------\n");
+
+    Item it1 = new Item(f1, 2);
+    Item it2 = new Item(f2, 3, "MORE SAUCE");
+    Item it3 = new Item(f3, 1);
+
+    Invoice inv = new Invoice(c1);
+
+    if (inv.addItem(it1) && inv.addItem(it2)) System.out.println("Items added successfully");
+    else System.out.println("Items could not be added");
+
+    if (inv.removeItem(it3)) System.out.println("Item removed successfully");
+    else System.out.println("Failed to remove item (item doesn't exist in invoice)");
+
+    inv.nextStage();
+
+    System.out.println("Current state: " + inv.getState());
+
+    System.out.println("\n--------------------------------------\n");
+
+    for (int i = 0; i < inv.getItems().size(); i++) {
+        Item it = inv.getItems().get(i);
+        System.out.println("Food Name: " + it.getFood().getName() + " | Food Description: " + it.getDescription());
+    }
+
+    System.out.println("Total price: " + inv.getTotalPrice());
+}