ShoppingSpree

package p04ShoppingSpree;


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.LinkedHashSet;

public class ShoppingSpree {

    public static void main(String[] args) throws IOException {
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(System.in))) {
            StringBuilder sb = new StringBuilder();
            LinkedHashSet<Person> personsSet = new LinkedHashSet<>();
            ArrayList<Product> productsSet = new ArrayList<>();

            String line1 = reader.readLine();
            String[] people;
            String line2 = reader.readLine();
            String[] products;

            if (line1.contains(";")) {
                people = line1.split(";");
            } else {
                people = line1.split("=");
            }

            if (line2.contains(";")) {
                products = line2.split(";");
            } else {
                products = line2.split("=");
            }

            for (int i = 0; i < people.length; i++) {
                String name;
                int money;
                if (people[i].contains("=")) {
                    String[] peopleSplit = people[i].split("=");
                    name = peopleSplit[0];
                    money = Integer.parseInt(peopleSplit[1]);
                    personsSet.add(new Person(name, money));
                } else {
                    name = people[i];
                    money = Integer.parseInt(people[i + 1]);
                    personsSet.add(new Person(name, money));
                    break;
                }
            }

            for (int i = 0; i < products.length; i++) {
                String product;
                int price;
                if (products[i].contains("=")) {
                    String[] productSplit = products[i].split("=");
                    product = productSplit[0];
                    price = Integer.parseInt(productSplit[1]);
                    productsSet.add(new Product(product, price));
                } else {
                    product = products[i];
                    price = Integer.parseInt(products[i + 1]);
                    productsSet.add(new Product(product, price));
                    break;
                }
            }

            String command = reader.readLine();

            while (!command.equals("END")) {
                String[] buyProducts = command.split(" ");
                String name = buyProducts[0];
                String product = buyProducts[1];

                for (Person person : personsSet) {
                    if (person.getName().equals(name)) {
                        for (Product product1 : productsSet) {
                            if (product1.getProduct().equals(product)) {
                                person.addToBag(product1.getProduct(), product1.getPrice());
                            }
                        }
                    }
                }


                command = reader.readLine();
            }
            for (Person person : personsSet) {
                person.getPurchases();
            }

        } catch (IllegalArgumentException iae) {
            System.out.println(iae.getMessage());
        }
    }
}


class Person {

    private String name;
    private int money;
    private ArrayList<String> bag;


    public Person(String name, int money) {
        this.setName(name);
        this.setMoney(money);
        this.bag = new ArrayList<>();

    }


    public String getName() {
        return this.name;
    }

    public int getMoney() {
        return this.money;
    }

    private int bagSize() {
        return this.bag.size();
    }

    public void addToBag(String product, int money) {
        if (this.money >= money) {
            System.out.printf("%s bought %s\n", this.name, product);
            this.payProduct(money);
            this.bag.add(product);
        } else {
            System.out.printf("%s can't afford %s\n", this.name, product);
        }

    }

    private void payProduct(int money) {
        this.money -= money;
    }

    public void getPurchases() {
        if (bagSize() == 0) {
            System.out.printf("%s - Nothing bought\n", this.name);
        } else {
            StringBuilder sb = new StringBuilder();
            sb.append(String.format("%s - ", this.name));
            for (String product : this.bag) {
                sb.append(String.format("%s, ", product));
            }

            sb.deleteCharAt(sb.length() - 2);
            System.out.println(sb.toString());
        }
    }

    private void setName(String name) {
        if (name.length() == 0) {
            throw new IllegalArgumentException("Name cannot be empty");
        }
        this.name = name;
    }

    private void setMoney(int money) {
        if (money < 0) {
            throw new IllegalArgumentException("Money cannot be negative");
        }
        this.money = money;
    }


}


class Product {

    private String product;
    private int price;

    public Product(String product, int price) {
        this.setProduct(product);
        this.setPrice(price);
    }

    public String getProduct() {
        return this.product;
    }

    public int getPrice() {
        return this.price;
    }

    private void setProduct(String product) {
        if (product.isEmpty()) {
            throw new IllegalArgumentException("Name cannot be empty");
        }
        this.product = product;
    }

    private void setPrice(int price) {
        if (price < 0) {
            throw new IllegalArgumentException("Money cannot be negative");
        }
        this.price = price;
    }


}