package cmpt213.assignment4.packagedeliveries.client.view;

import cmpt213.assignment4.packagedeliveries.client.control.PackageDeliveriesTracker;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;

public class JavaSwingUI implements ActionListener {
    private final PackageDeliveriesTracker pTracker = PackageDeliveriesTracker.getInstance();
    JFrame uiFrame;
    JPanel uiPanel;
    JScrollPane scrollView;
    PACKAGE_FILTER_OPTION option = PACKAGE_FILTER_OPTION.ALL;

    ;

    public void displayMainPage() {
        pTracker.load();
        uiFrame = new JFrame("Package deliveries tracker");
        uiFrame.setSize(500, 500);
        uiFrame.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
        uiFrame.setLayout(new BoxLayout(uiFrame.getContentPane(), BoxLayout.Y_AXIS));
        uiFrame.addWindowListener(new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent e) {
                pTracker.save();
                super.windowClosing(e);
                uiFrame.dispose();
            }
        });
        uiFrame.setVisible(true);
        dsplayOptionButtons();
        addButtons();
        setupScrollPane();
        refreshPackageList();
    }

    private void setupScrollPane() {
        uiPanel = new JPanel();
        scrollView = new JScrollPane(uiPanel);

        uiPanel.setLayout(new BoxLayout(uiPanel, BoxLayout.Y_AXIS));
        scrollView.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        uiPanel.add(Box.createVerticalGlue());
        uiFrame.getContentPane().add(scrollView);
        uiFrame.pack();
    }

    private void displayPackages(ArrayList<String> packages) {
        uiPanel.removeAll();
        uiPanel.setLayout(new BoxLayout(uiPanel, BoxLayout.Y_AXIS));
        scrollView.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
        uiPanel.add(Box.createVerticalGlue());
        uiFrame.getContentPane().add(scrollView);
        System.out.println(packages);
        if (packages.get(0) != "No packages to show") {
        for (int i = 0; i < packages.size(); i++) {
            JPanel p = new JPanel();
            JTextPane pkgPane = new JTextPane();
            pkgPane.setEditable(false);
            pkgPane.setText(packages.get(i));
            p.add(pkgPane);
            if (option == PACKAGE_FILTER_OPTION.ALL) {
                JButton remove = new JButton();
                int finalI = i;
                remove.addActionListener(new ActionListener() {
                    @Override
                    public void actionPerformed(ActionEvent e) {
                        pTracker.removePcakage(finalI);
                        refreshPackageList();
                    }
                });
                remove.setText("Remove");
                p.add(remove);

                JCheckBox delivered = new JCheckBox("Delivered?");
                delivered.setBounds(100, 100, 50, 50);
                delivered.setSelected(pTracker.isDelivered(i));
                int finalI1 = i;
                delivered.addActionListener(new ActionListener() {
                    @Override
                    public void actionPerformed(ActionEvent e) {
                        delivered.setSelected(true);
                        pTracker.setDelivered(finalI1);
                        refreshPackageList();
                    }
                });
                p.add(delivered);
            }
            uiPanel.add(p);
        }
    }
        uiFrame.validate();
        uiFrame.pack();
    }

    private void addButtons() {
        JButton add = new JButton("Add a package");
        JPanel addPanel = new JPanel();
        addPanel.setLayout(new BoxLayout(addPanel, BoxLayout.X_AXIS));
        addPanel.add(add);
        addPanel.setPreferredSize(new Dimension(500, 50));
        uiFrame.add(addPanel);
        add.addActionListener(this);
    }

    private void dsplayOptionButtons() {
        JButton btnAll = new JButton("All");
        JButton btnOverdue = new JButton("Overdue");
        JButton btnUpcoming = new JButton("Upcoming");

        btnAll.addActionListener(this);
        btnOverdue.addActionListener(this);
        btnUpcoming.addActionListener(this);

        JPanel btnPanel = new JPanel();
        btnPanel.setLayout(new BoxLayout(btnPanel, BoxLayout.X_AXIS));
        btnPanel.add(btnAll);
        btnPanel.add(btnOverdue);
        btnPanel.add(btnUpcoming);
        btnPanel.setPreferredSize(new Dimension(500, 50));
        uiFrame.add(btnPanel);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        String actionString = e.getActionCommand();
        switch (actionString) {
            case "Add a package":
                addPackage();
                break;
            case "All":
                option = PACKAGE_FILTER_OPTION.ALL;
                refreshPackageList();
                break;
            case "Overdue":
                option = PACKAGE_FILTER_OPTION.OVERDUE;
                refreshPackageList();
                break;
            case "Upcoming":
                option = PACKAGE_FILTER_OPTION.UPCOMING;
                refreshPackageList();
                break;
        }

    }

    private void addPackage() {
        new Input(uiFrame);
        refreshPackageList();
    }

    private void refreshPackageList() {
        switch (option) {
            case ALL:
                ArrayList<String> allPackages = pTracker.getAllPackages();
                displayPackages(allPackages);
                break;
            case OVERDUE:
                ArrayList<String> overDuePkg = pTracker.overDuePackages();
                displayPackages(overDuePkg);
                break;
            case UPCOMING:
                ArrayList<String> upcomingPkg = pTracker.upcomingPackages();
                displayPackages(upcomingPkg);
                break;
        }
    }

    enum PACKAGE_FILTER_OPTION {ALL, OVERDUE, UPCOMING}
}