import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.awt.*;
import java.io.*;
import java.util.Vector;

public class OrderFrame extends JFrame {
    private static final long serialVersionUID = 1L;

    private ProductPanel productPanel = new ProductPanel();
    private JButton buttonOpen = new JButton("Open");

    private Vector<Product> bla = new Vector();
    private JList list;

    // TODO: Add property for products

    public OrderFrame() {
        this.setTitle("Lukas HEiligenbrunner");
        this.add(buttonOpen, BorderLayout.NORTH);
        this.add(productPanel);

        JFrame _this = this;
        buttonOpen.addActionListener(e -> {
            System.out.println("Btn clicked!");

            JFileChooser chooser = new JFileChooser(new File("."));
            FileNameExtensionFilter filter = new FileNameExtensionFilter("CSV Images", "csv");
            chooser.setFileFilter(filter);

            int returnVal = chooser.showOpenDialog(_this);
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                System.out.println("You chose to open this file: " + chooser.getSelectedFile().getName());
                try {
                    openFileAndFillToListBox(chooser.getSelectedFile().getName());
                    list.repaint();
                } catch (WrongFileFormatException ee) {
                    ee.printStackTrace();
                    bla.clear();
                }
            }
        });

        try {
            openFileAndFillToListBox("products.csv");
        } catch (WrongFileFormatException e) {
            e.printStackTrace();
            bla.clear();
        }


        list = new JList(bla);
        list.addListSelectionListener(new ListSelectionListener() {
            @Override
            public void valueChanged(ListSelectionEvent e) {

                productPanel.setData(bla.get(e.getLastIndex()));
                System.out.println("something was selected" + e.getLastIndex());

            }
        });
        this.add(list, BorderLayout.WEST);


        this.setSize(600, 400);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setVisible(true);
    }

    public void openFileAndFillToListBox(String filename) {
        bla.clear();
        File myfile = new File(filename);
        try {
            BufferedReader reader = new BufferedReader(new FileReader(myfile));

            while (reader.ready()) {
                String str = reader.readLine();
                String[] stringsiarri = str.split(";");

                if (stringsiarri.length != 2) {
                    System.out.println("error occured");
                    throw new WrongFileFormatException("too many rows");
                }


                try {
                    Float.parseFloat(stringsiarri[1]);
                } catch (NumberFormatException e) {
                    // no float in csv
                    throw new WrongFileFormatException("Wrong data type in csv");
                }

                Product tempproduct = new Product(stringsiarri[0], stringsiarri[1]);
                bla.add(tempproduct);
            }

            reader.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}