package ShopManagement;

import ShopManagement.model.Product;

import java.util.ArrayList;
import java.io.*;

public class ProductList
{

    ArrayList<Product> list;

    public ProductList(){
        this.list = new ArrayList<Product>();
    }
   
    public void SaveToFile()
    {
        try
        {
            File f = new File("ProductList.dat");
            FileOutputStream fos = new FileOutputStream(f);
            ObjectOutputStream ous= new ObjectOutputStream(fos);

            ous.writeObject( new Product(1, "Thuc an cho meo", 50000, 0));
            ous.writeObject( new Product(2, "Cat ve sinh", 150000, 0));
            ous.writeObject( new Product(3, "Ao cho cho", 40000, 0));
            ous.writeObject( new Product(4, "Thuc an cho cho", 50000, 0));
            ous.writeObject( new Product(5, "Chau cat ve sinh cho meo", 170000, 0));
            ous.writeObject( new Product(6, "Vong co cho meo", 55000, 0));
            ous.writeObject( new Product(7, "Chen an cho meo 2 cai", 50000, 0));
            ous.writeObject( new Product(8, "Sua tam cho meo", 98000, 0));
            ous.writeObject( new Product(9, "Cay meo leo", 900000, 0));
            ous.writeObject( new Product(10, "Luoc chai long meo", 70000, 0));

            fos.close();
            ous.close();
            System.out.println("Done");
        }
        catch (Exception e)
        {
            System.out.println("Failed: " +e.getMessage());
        }
    }

    public void readFile(){
        try{
            FileInputStream fis   = new FileInputStream("ProductList.dat");
            ObjectInputStream ois = new ObjectInputStream(fis);
            Product p = (Product)ois.readObject();
            while (p != null){
                this.list.add(p);
                try{
                    p = (Product)ois.readObject();
                }catch (Exception e){
                    p = null;
                }
            }
        }catch (Exception e)
        {
        }
    }

    public void Output()
    {
        for(Product st:list)
        {
            System.out.println(st.toString());
        }
    }

    public Product getItemById(int id){
        int pos     = getPosById(id);
        if (pos < 0 ) return null;
        return list.get(pos);
    }

    public int getPosById(int id)
    {
        for (int i=0; i<this.list.size(); i++){
            if (this.list.get(i).getProductID() == id)
                return i;
        }
        return -1;
    }

}