Send.java

import java.util.concurrent.ThreadLocalRandom;

public class Send implements Order {
    private Customer customer;
    private String courir;
    private String destination;
    private String item;
    private double weight; // berat dalam kg

    public Send(Customer customer, String destination, String item, double weight) {
        this.customer = customer;
        this.courir = pilihCourir();
        this.destination = destination;
        this.item = item;
        this.weight = weight;
    }

     private String pilihCourir() {
        String[] daftarCourir = { "Ahmad (JNE)", "Arsyi (JNT)", "Aksa (SPX)", "Bintang (Wahana)", "Rijal(SiCepat)" };

        int index = ThreadLocalRandom.current().nextInt(daftarCourir.length);
        String courirTerpilih = daftarCourir[index];
        System.out.println("========================================");
        System.out.println(" Driver terpilih: " + courirTerpilih);
        return courirTerpilih;
    }

    public void process() {
        System.out.println("========================================");
        System.out.println("=======     PEMESANAN SEND      ========");
        System.out.println("========================================");
        System.out.println("Nama Customer : " + customer.getName());
        System.out.println("Kurir         : " + courir);
        System.out.println("Barang        : " + item);
        System.out.println("Ke            : " + destination);
        System.out.println("Berat         : " + weight + " kg");
        System.out.println("Total Biaya   : Rp" + calculateCost());
        System.out.println("");
        System.out.println(customer.getName() + " mengirim " + item + " ke " + destination);
        System.out.println("========================================");
        
    }

    public double calculateCost() {
        if (weight <= 5) {
            return weight * 4000;
        } else {
            return (5 * 4000) + ((weight - 5) * 5000);
        }
    }
}