package laba1Loco;

import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.StringSelection;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.util.*;
import javax.swing.*;
import javax.swing.border.Border;

import java.awt.event.*;
import java.io.IOException;

public class FormTrainConfig {
    private class Canvas extends JComponent{
        public Canvas(){
        }
        public void paintComponent (Graphics g){
            if (_train == null){
                return;
            }
            super.paintComponents (g) ;
            Graphics2D g2d = (Graphics2D)g;
            _train.DrawTransport(g2d);
            super.repaint();
        }
    }
    //класс для перетаскивания типа объекта
    private class LabelTransferHandler extends TransferHandler {
        @Override
        public int getSourceActions(JComponent c) {
            return TransferHandler.COPY;
        }

        @Override
        protected Transferable createTransferable(JComponent c) {
            return new StringSelection(((JLabel)c).getText());
        }
    }
    //что бы цвет можно было таскать
    private class ColorTransferable implements Transferable {
        private Color color;
        private static final DataFlavor colorDataFlavor = new DataFlavor(Color.class, "Color");
    
        public ColorTransferable(Color color) {
            this.color = color;
        }
    
        @Override
        public DataFlavor[] getTransferDataFlavors() {
            return new DataFlavor[]{colorDataFlavor};
        }
    
        @Override
        public boolean isDataFlavorSupported(DataFlavor flavor) {
            return colorDataFlavor.equals(flavor);
        }
    
        @Override
        public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
            if (isDataFlavorSupported(flavor)) {
                return color;
            } else {
                throw new UnsupportedFlavorException(flavor);
            }
        }
    }
    //для перетаскивания цвета
    private class PanelTransferHandler extends TransferHandler {
        @Override
        public int getSourceActions(JComponent c) {
            return TransferHandler.COPY;
        }

        @Override
        protected Transferable createTransferable(JComponent c) {
            return new ColorTransferable(((JPanel)c).getBackground());
        }
    }
    //для обработки нажатий
    private class LabelMouseAdapter extends MouseAdapter{
        @Override
        public void mousePressed(MouseEvent e) {
            ((JLabel)e.getComponent()).getTransferHandler().exportAsDrag(((JLabel)e.getComponent()), e, TransferHandler.COPY);
        }
    }
    private class PanelMouseAdapter extends MouseAdapter{
        @Override
        public void mousePressed(MouseEvent e) {
            ((JPanel)e.getComponent()).getTransferHandler().exportAsDrag(((JPanel)e.getComponent()), e, TransferHandler.COPY);
        }
    }
    final int WindowHeight = 700;
    final int WindowWidth = 1000;
    final int CanvasHeight = 600;
    final int CanvasWidth = 600;
    public DrawingTrain _train = null;
    public JButton buttonAdd;
    public JFrame w;
    public Canvas canvas;
    public FormTrainConfig(){
        Border border = BorderFactory.createLineBorder(Color.GRAY);
        JLabel labelSpeed = new JLabel("Speed");
        JLabel labelWeight = new JLabel("Weight");
        JLabel labelWheelNum = new JLabel("Wheel");
        SpinnerModel spinnerModel = new SpinnerNumberModel(100, 100, 1000, 1);
        JSpinner numericSpeed = new JSpinner(spinnerModel);
        SpinnerModel spinnerModel2 = new SpinnerNumberModel(100, 100, 1000, 1);
        JSpinner numericWeight = new JSpinner(spinnerModel2);
        SpinnerModel spinnerModel3 = new SpinnerNumberModel(2, 2, 4, 1);
        JSpinner numericWheelNum = new JSpinner(spinnerModel3);
        JCheckBox checkBoxTube = new JCheckBox("Smoke tube");
        JCheckBox checkBoxFuelTank = new JCheckBox("Fuel tank");
        JCheckBox checkBoxLocoLine = new JCheckBox("Loco line");
        JPanel[] colorPanels = {
            new JPanel(),new JPanel(),new JPanel(),new JPanel(),
            new JPanel(),new JPanel(),new JPanel(),new JPanel(),
        };
        colorPanels[0].setBackground(Color.BLACK);
        colorPanels[1].setBackground(Color.BLUE);
        colorPanels[2].setBackground(Color.GRAY);
        colorPanels[3].setBackground(Color.YELLOW);
        colorPanels[4].setBackground(Color.RED);
        colorPanels[5].setBackground(Color.GREEN);
        colorPanels[6].setBackground(Color.ORANGE);
        colorPanels[7].setBackground(Color.WHITE);
        for (var it : colorPanels){
            it.setTransferHandler(new PanelTransferHandler());
            it.addMouseListener(new PanelMouseAdapter());
        }

        JLabel labelTrain = new JLabel("Train");
        labelTrain.setTransferHandler(new LabelTransferHandler());
        labelTrain.addMouseListener(new LabelMouseAdapter());
        labelTrain.setBorder(border);
        labelTrain.setHorizontalAlignment(SwingConstants.CENTER);
        labelTrain.setVerticalAlignment(SwingConstants.CENTER);

        JLabel labelLoco = new JLabel("Loco");
        labelLoco.setTransferHandler(new LabelTransferHandler());
        labelLoco.addMouseListener(new LabelMouseAdapter());
        labelLoco.setBorder(border);
        labelLoco.setHorizontalAlignment(SwingConstants.CENTER);
        labelLoco.setVerticalAlignment(SwingConstants.CENTER);

        JLabel labelColor = new JLabel("Color");
        labelColor.setBorder(border);
        labelColor.setHorizontalAlignment(SwingConstants.CENTER);
        labelColor.setVerticalAlignment(SwingConstants.CENTER);
        labelColor.setTransferHandler(
            new TransferHandler(){
                @Override
                public boolean canImport(TransferHandler.TransferSupport support) {
                    return support.isDataFlavorSupported(ColorTransferable.colorDataFlavor);
                }

                @Override
                public boolean importData(TransferHandler.TransferSupport support) {
                    if (canImport(support)) {
                        try {
                            Color color = (Color) support.getTransferable().getTransferData(ColorTransferable.colorDataFlavor);
                            _train.setBodyColor(color);
                            canvas.repaint();
                            return true;
                        } catch (UnsupportedFlavorException | IOException e) {
                            e.printStackTrace();
                        }
                    }
                    return false;
                }
            }
        );

        JLabel labelAdditionalColor = new JLabel("Additional color");
        labelAdditionalColor.setBorder(border);
        labelAdditionalColor.setHorizontalAlignment(SwingConstants.CENTER);
        labelAdditionalColor.setVerticalAlignment(SwingConstants.CENTER);
        labelAdditionalColor.setTransferHandler(
            new TransferHandler(){
                @Override
                public boolean canImport(TransferHandler.TransferSupport support) {
                    return support.isDataFlavorSupported(ColorTransferable.colorDataFlavor);
                }

                @Override
                public boolean importData(TransferHandler.TransferSupport support) {
                    if (canImport(support)) {
                        try {
                            Color color = (Color) support.getTransferable().getTransferData(ColorTransferable.colorDataFlavor);
                            if (!(_train instanceof DrawingLoco))
                                return false;
                            ((DrawingLoco)_train).setAdditionalColor(color);
                            return true;
                        } catch (UnsupportedFlavorException | IOException e) {
                            e.printStackTrace();
                        }
                    }
                    return false;
                }
            }
        );

        canvas = new Canvas();
        canvas.setTransferHandler(
            new TransferHandler(){
                @Override
                public boolean canImport(TransferHandler.TransferSupport support) {
                    return support.isDataFlavorSupported(DataFlavor.stringFlavor);
                }

                @Override
                public boolean importData(TransferHandler.TransferSupport support) {
                    if (canImport(support)) {
                        try {
                            String data = (String) support.getTransferable().getTransferData(DataFlavor.stringFlavor);
                            switch (data) {
                                case "Train":
                                    _train = new DrawingTrain((int)numericSpeed.getValue(), (int)numericWeight.getValue(), Color.WHITE, (int)numericWheelNum.getValue(), CanvasWidth,CanvasHeight);
                                    break;
                                case "Loco":
                                    _train = new DrawingLoco((int)numericSpeed.getValue(), (int)numericWeight.getValue(), Color.WHITE, (int)numericWheelNum.getValue(), Color.BLACK, checkBoxTube.isSelected(), checkBoxFuelTank.isSelected(), checkBoxLocoLine.isSelected(),  CanvasWidth,CanvasHeight);
                                    break;
                            }
                            canvas.repaint();
                            return true;
                        } catch (UnsupportedFlavorException | IOException e) {
                            e.printStackTrace();
                        }
                    }
                    return false;
                }
            }
        );

        buttonAdd = new JButton("Add");
        JButton buttonCancel = new JButton("Cancel");

        labelSpeed.setBounds(10,10,40,20);
        labelWeight.setBounds(10,40,40,20);
        labelWheelNum.setBounds(10,70,40,20);
        numericSpeed.setBounds(55,10,80,20);
        numericWeight.setBounds(55,40,80,20);
        numericWheelNum.setBounds(55,70,80,20);
        checkBoxTube.setBounds(10,100,120,20);
        checkBoxFuelTank.setBounds(10,130,120,20);
        checkBoxLocoLine.setBounds(10,160,120,20);
        for (int i = 0; i < colorPanels.length; i+=2){
            colorPanels[i].setBounds(10,200+i/2*60,50,50);
            colorPanels[i+1].setBounds(70,200+i/2*60,50,50);
        }
        labelTrain.setBounds(10,500 ,50,30);
        labelLoco.setBounds(70,500 ,50,30);

        labelColor.setBounds(WindowWidth-CanvasWidth, 10, CanvasWidth/3, 30);  
        labelAdditionalColor.setBounds(WindowWidth-CanvasWidth + CanvasWidth*2/3, 10, CanvasWidth/3, 30);
        canvas.setBounds(WindowWidth-CanvasWidth, 50, CanvasWidth, CanvasHeight);
        buttonAdd.setBounds(WindowWidth-CanvasWidth, CanvasHeight+60, CanvasWidth/3, 30);
        buttonCancel.setBounds(WindowWidth-CanvasWidth + CanvasWidth*2/3, CanvasHeight+60, CanvasWidth/3, 30);

        w = new JFrame();
        w.setSize (WindowWidth+20, WindowHeight+40);
        w.setLayout(null);
        w.add(labelSpeed);
        w.add(labelWeight);
        w.add(labelWheelNum);
        w.add(numericSpeed);
        w.add(numericWeight);
        w.add(numericWheelNum);
        w.add(checkBoxTube);
        w.add(checkBoxFuelTank);
        w.add(checkBoxLocoLine);
        for (var it : colorPanels)
            w.add(it);
        w.add(labelTrain);
        w.add(labelLoco);
        w.add(labelColor);
        w.add(labelAdditionalColor);
        w.add(canvas);
        w.add(buttonAdd);
        w.add(buttonCancel);

        w.setVisible(true);

        buttonCancel.addActionListener(
            new ActionListener() {
                public void actionPerformed(ActionEvent e){
                    w.dispose();
                }
            }
        );
    }
}