Define Class Members (write code)

Attributes: For each class, define the attributes (data) it will hold...
Methods: Define the methods (functions) that operate on the attributes. Ensure they align with the object's responsibilities and adhere to the principle of encapsulation.
public class Person {
    private String name;
    private int age;
    public Person(String name, int age){
        this.name = name;
        this.age = age;
    }
    public int getAge() {return age;}
    public String getName() {return name;}
    public void setAge(int age) {this.age = age;}
    public void setName(String name) {this.name = name;}
}

public class Person {
    private String name;
    private int age;
    public Person(String name, int age){
        this.name = name;
        this.age = age;
    }
    public int getAge() {return age;}
    public String getName() {return name;}
    public void setAge(int age) {this.age = age;}
    public void setName(String name) {this.name = name;}
}

public class Manager extends Person {
    private  String managerType;
    private int workPeriod;
    public Manager(String name, int age, String managerType, int workPeriod){
        super(name, age);
        this.managerType = managerType;
        this.workPeriod = workPeriod;
    }
    public String getManagerType() {
        return managerType;
    }

    public void setManagerType(String managerType) {
        this.managerType = managerType;
    }
    public int getWorkPeriod() {
        return workPeriod;
    }

    public void setWorkPeriod(int workPeriod) {
        this.workPeriod = workPeriod;
    }
}

public class PersonFactory {
    public Person generateNewPerson(String type, String name, int age, String role){
        if(Objects.equals(type, "Manager")){
            return new Manager(name, age, role, 8);
        }else{
            return new Client(name, age, role);
        }
    }
}

public class Product {
    private String productId;
    private String name;
    private float price;
    private int quantity;
    private float size;
    private Partition partition;
    public Product(String productId, String name, float price, int quantity, Partition partition, float size){
        this.name = name;
        this.quantity = quantity;
        this.productId = productId;
        this.price = price;
        this.partition = partition;
        this.size = size;
    }
    public String getProductId() {return productId;}
    public void setProductId(String productId) {this.productId = productId;}
    public String getName() {return name;}
    public void setName(String name) {this.name = name;}
    public float getPrice() {return price;}
    public void setPrice(float price) {this.price = price;}
    public int getQuantity() {return quantity;}
    public void setQuantity(int quantity) {this.quantity = quantity;}
    public Partition getPartition() {return partition;}

    public float getSize() {
        return size;
    }

    public void setSize(float size) {
        this.size = size;
    }
}

import java.time.LocalDate;

public class ProductBatch {
    private String productBatchId;
    private String productId;
    private LocalDate expiryDate;
    private int quantity;

    public ProductBatch(String productBatchId, String productId, LocalDate expiryDate, int quantity) {
        this.productBatchId = productBatchId;
        this.productId = productId;
        this.expiryDate = expiryDate;
        this.quantity = quantity;
    }
    public String getProductBatchId() {return productBatchId;}
    public void setProductBatchId(String productBatchId) {this.productBatchId = productBatchId;}
    public String getProductId() {return productId;}
    public void setProductId(String productId) {this.productId = productId;}
    public LocalDate getExpiryDate() {return expiryDate;}
    public void setExpiryDate(LocalDate expiryDate) {this.expiryDate = expiryDate;}
    public int getQuantity() {return quantity;}
    public void setQuantity(int quantity) {this.quantity = quantity;}
}

import java.util.List;
import java.util.ArrayList;

public class Order {
    private String orderId;
    private List<OrderItem> orders = new ArrayList<>();
    private float totalCost = 0;

    public Order(String orderId, List<OrderItem> orders){
        this.orderId = orderId;
        this.orders = orders;
        for(OrderItem orderItem: orders){
            totalCost += orderItem.getQuantity() * orderItem.getProduct().getPrice();
        }
    }
    public float getTotalCost(){
        return totalCost;
    }
    public void getOrderDetails(){
        for(OrderItem orderItem: orders){
            System.out.println("The product name is: " + orderItem.getProduct().getName() + " and the quantity is: " + orderItem.getQuantity());
        }
    }

    public String getOrderId() {
        return orderId;
    }
}

import java.time.LocalDate;

public class OrderItem {
    private String orderItemId;
    private Product product;
    private Client client;
    private LocalDate orderDate;
    private int quantity;
    public OrderItem(String orderItemId, Product product, Client client, LocalDate orderDate, int quantity){
        this.product = product;
        this.orderDate = orderDate;
        this.orderItemId = orderItemId;
        this.quantity = quantity;
        this.client = client;
    }

    public String getOrderItemId() {
        return orderItemId;
    }

    public int getQuantity() {
        return quantity;
    }

    public LocalDate getOrderDate() {
        return orderDate;
    }

    public Client getClient() {
        return client;
    }

    public void setOrderItemId(String orderItemId) {
        this.orderItemId = orderItemId;
    }

    public void setClient(Client client) {
        this.client = client;
    }

    public void setOrderDate(LocalDate orderDate) {
        this.orderDate = orderDate;
    }

    public void setQuantity(int quantity) {
        this.quantity = quantity;
    }

    public void setProduct(Product product) {
        this.product = product;
    }

    public Product getProduct() {
        return product;
    }

}

import java.util.List;
import java.util.ArrayList;

public class StatisticsService implements ObserverInterface{
    private static StatisticsService statisticsService;
    private float totalProfit;
    private List<Order> totalOrders = new ArrayList<>();
    private float totalNumberOfOrders;
     static public StatisticsService getInstance(){
        if(statisticsService == null){
            statisticsService = new StatisticsService();
        }
        return statisticsService;
    }

    public float getTotalProfit() {
        return totalProfit;
    }

    public float getTotalNumberOfOrders() {
        return totalNumberOfOrders;
    }

    public void addProfit(float profit) {
        this.totalProfit += profit;
    }
    public void getOrdersDetails(){
        for(Order order: totalOrders){
            System.out.println("The order id is: " + order.getOrderId() + " and the total order cost is: " + order.getTotalCost());
        }
    }
    public void addNewOrder(Order order){
        totalOrders.add(order);
    }

    @Override
    public void update(){
         this.totalNumberOfOrders++;
    }
}

public interface ShipmentInterface {
    public void makeShipmentLogic();
}

abstract public class Shipment implements ShipmentInterface {
    private final String shipmentId;
    private Order order;
    private float shipmentCost;
    private String shipmentLocation;
    public Shipment(String shipmentId, Order order, float shipmentCost, String shipmentLocation){
        this.shipmentId = shipmentId;
        this.order = order;
        this.shipmentCost = shipmentCost;
        this.shipmentLocation = shipmentLocation;
    }

    public float getShipmentCost() {
        return shipmentCost;

    }

    public String getShipmentId() {
        return shipmentId;
    }

    public Order getOrder() {
        return order;
    }

    public String getShipmentLocation() {
        return shipmentLocation;
    }

    public void setOrder(Order order) {
        this.order = order;
    }

    public void setShipmentCost(float shipmentCost) {
        this.shipmentCost = shipmentCost;
    }

    public void setShipmentLocation(String shipmentLocation) {
        this.shipmentLocation = shipmentLocation;
    }
}

public class IncomingShipment extends Shipment implements ObserverInterface{
    public IncomingShipment(String shipmentId, Order order, float shipmentCost, String shipmentLocation){
        super(shipmentId, order, shipmentCost, shipmentLocation);
    }
    @Override
    public void makeShipmentLogic(){
        System.out.println("Make incoming shipment logic");
    }

    @Override
    public void update(){
        StatisticsService.getInstance().addProfit(-this.getOrder().getTotalCost());
    }
}

public class OutgoingShipment extends Shipment implements ObserverInterface{
    public OutgoingShipment(String shipmentId, Order order, float shipmentCost, String shipmentLocation){
        super(shipmentId, order, shipmentCost, shipmentLocation);
    }
    @Override
    public void makeShipmentLogic(){
        System.out.println("Make outgoing shipment logic");
    }

    @Override
    public void update(){
        StatisticsService.getInstance().addProfit(this.getOrder().getTotalCost());
    }
}

public interface ObserverInterface {
    public void update();
}

public interface ObserverInterface {
    public void update();
}

import java.util.List;
import java.util.ArrayList;

public class Partition {
    private float size;
    private float remainingSize;
    private String location;
    private int rank;
    private List<Product> productList = new ArrayList<>();
    public Partition(float size, int rank, String location){
        this.size = size;
        this.location = location;
        this.rank = rank;
    }

    public void setSize(float size) {
        this.size = size;
    }

    public float getSize() {
        return size;
    }

    public float getRemainingSize() {
        return remainingSize;
    }

    public int getRank() {
        return rank;
    }

    public String getLocation() {
        return location;
    }

    public void setLocation(String location) {
        this.location = location;
    }

    public void setRank(int rank) {
        this.rank = rank;
    }

    public void decreaseRemainingSize(float size) {
        this.remainingSize -= size;
    }
    public void increaseRemainingSize(float size) {
        this.remainingSize += size;
    }

    public void addProduct(Product product) {
        this.productList.add(product);
        this.decreaseRemainingSize(product.getQuantity() * product.getSize());
    }
    public void removeProduct(Product product){
        this.productList.remove(product);
        this.increaseRemainingSize(product.getQuantity() * product.getSize());
    }
}

import java.util.List;
import java.util.ArrayList;

public class Warehouse {
    private List<Partition> partitions = new ArrayList<>();

    public void addPartition(Partition partition) {
        partitions.add(partition);
    }

    public void addNewProduct(Product product, int rank){
        for(Partition partition: partitions){
            if(
                partition.getRank() == rank &&
                partition.getRemainingSize() > product.getQuantity() * product.getSize()
            ){
                partition.addProduct(product);
                return;
            }
        }
        throw new RuntimeException("There is no available partition with this rank and the required size");
    }
    public void removeProduct(Product product){
        product.getPartition().removeProduct(product);
    }
}
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