package tmcsim.client.cadclientgui.screens;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Point;
import java.awt.Toolkit;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.rmi.RemoteException;
import java.util.List;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JSeparator;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.RowSorter.SortKey;
import javax.swing.SwingUtilities;
import javax.swing.TransferHandler;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
import tmcsim.client.cadclientgui.enums.CADDataEnums;
import tmcsim.client.cadclientgui.enums.CADDataEnums.INC_VAL;
import tmcsim.client.cadclientgui.enums.CADScriptTags.UNIT_TAGS;
import tmcsim.client.cadclientgui.enums.IncidentEnums;
import tmcsim.client.cadclientgui.enums.TableHeaders;
import tmcsim.client.cadclientgui.enums.UnitStatusEnums;

/**
 * This class contains the view and controller for the PendingIncidents screen.
 * The view was not built using a GUI builder plug-in (but may want to consider
 * doing so in the future), and the controller uses listeners to control how the
 * view and data act.
 *
 * @author Vincent
 */
public class PendingIncidents extends JFrame
{
    private final String SCREEN_TITLE = "(Shift + F2) Pending Incidents";
    private final Dimension SCREEN_DIMENSIONS = new Dimension(1400, 250);
    private final Dimension DROP_DOWN_MENU_LABEL_DIMENSIONS = new Dimension(170, 20);
    private final Dimension DROP_DOWN_MENU_DIMENSIONS = new Dimension(170, 180);
    private final int COLUMN_WIDTH = 120;
    private final String[] LABELS =
    {
        "Recommend...", "Add Resources...", "Open", "Recall Incident",
        "Cancel", "Link/Append", "Map", "Recall Linked Incidents", "Read Notes", "Mail...", "Fax..."
    };
    private final String LABEL_SPACING = "     ";
    private JTable pendingIncidentsTable;
    private JFrame pendingIncidentsMenu;
    //labels for the drop down menu
    private JLabel[] dropDownLabels = new JLabel[LABELS.length];
    private long lastLeftClick;//used for double clicking feature

    public PendingIncidents()
    {
        initComponents();
    }

    private void initComponents()
    {
        initializeTable();
        initControllers();
        initializeDropDownMenu();

        JScrollPane scrollpane = new JScrollPane(pendingIncidentsTable);
        scrollpane.getViewport().setBackground(Color.WHITE);

        setTitle(SCREEN_TITLE);
        setPreferredSize(SCREEN_DIMENSIONS);
        getContentPane().add(scrollpane);
        setResizable(true);
        pack();
        Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
        setLocation(0, (int) (dim.getHeight() * 3 / 4));
        setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
        setVisible(false);
    }

    /*
     * Initializes the table and prepares the cell renderer for color management. It initializes the default settings
     * and handles the drag and drop feature.
     */
    private void initializeTable()
    {
        pendingIncidentsTable = new JTable()
        {
            /*
             * Custom renderer to set different background/foreground colors
             * @see javax.swing.JTable#prepareRenderer(javax.swing.table.TableCellRenderer, int, int)
             */
            public Component prepareRenderer(TableCellRenderer renderer, int row, int column)
            {
                Component comp = super.prepareRenderer(renderer, row, column);

                comp.setForeground(Color.BLACK);
                comp.setBackground(Color.CYAN);
                if (getSelectedRow() == row)
                {
                    comp.setForeground(Color.WHITE);
                    comp.setBackground(Color.BLUE);
                }

                return comp;
            }

            public Class getColumnClass(int c)
            {
                return getValueAt(0, c).getClass();
            }
        };
        // Use a custom renderer to resolve ticket #78
        pendingIncidentsTable.setDefaultRenderer(Integer.class, new IncidentNumberRenderer());

        pendingIncidentsTable.setOpaque(true);
        pendingIncidentsTable.setIntercellSpacing(new Dimension(1, 0));
        pendingIncidentsTable.setGridColor(Color.WHITE);
        pendingIncidentsTable.getTableHeader().setReorderingAllowed(false);
        pendingIncidentsTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
        pendingIncidentsTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
        pendingIncidentsTable.setAutoCreateRowSorter(true);

        pendingIncidentsTable.setModel(new DefaultTableModel());
        ((DefaultTableModel) pendingIncidentsTable.getModel()).setColumnIdentifiers(TableHeaders.PENDING_INCIDENTS_HEADERS);

        pendingIncidentsTable.setTransferHandler(new TransferHandler()
        {
            public boolean canImport(TransferHandler.TransferSupport info)
            {
                // Check for String flavor
                if (!info.isDataFlavorSupported(DataFlavor.stringFlavor))
                {
                    return false;
                }
                return true;
            }

            public boolean importData(TransferHandler.TransferSupport info)
            {
                if (!info.isDrop())
                {
                    return false;
                }

                DefaultTableModel tableModel = (DefaultTableModel) pendingIncidentsTable.getModel();
                JTable.DropLocation dl = (JTable.DropLocation) info.getDropLocation();
                int index = dl.getRow();

                // Get the string that is being dropped.
                Transferable t = info.getTransferable();
                String data;
                try
                {
                    data = (String) t.getTransferData(DataFlavor.stringFlavor);
                } catch (Exception e)
                {
                    return false;
                }

                // Perform the actual import
                // TODO
                int incidentId = (Integer) pendingIncidentsTable.getValueAt(dl.getRow(), 0);
                try
                {
                    String masterInc = (String) ScreenManager.theCoordinator.
                            getCadDataIncVal(INC_VAL.MASTER_INC, incidentId);
                    ScreenManager.theCoordinator.setCadDataUnitValue(data,
                            UNIT_TAGS.MASTER_INC_NUM, masterInc);

                    ScreenManager.theCoordinator.setCadDataUnitAssignedId(data, incidentId);
                    ScreenManager.theCoordinator.setCadDataUnitValue(data,
                            UNIT_TAGS.UNIT_STATUS, UnitStatusEnums.Arrived);
                    ScreenManager.theCoordinator.addCadDataIncidentAssignedUnitNum(incidentId, data);
                    ScreenManager.theCoordinator.setCadDataIncidentStatus(incidentId, IncidentEnums.Assigned);
                } catch (RemoteException e)
                {
                    e.printStackTrace();
                }
                return true;
            }
        });
        for (int i = 0; i < pendingIncidentsTable.getColumnCount(); i++)
        {
            pendingIncidentsTable.getColumnModel().getColumn(i).setPreferredWidth(120);
        }
    }

    /*
     * Adds the key and mouse listeners for the table and component listener for screen.
     */
    private void initControllers()
    {
        pendingIncidentsTable.addMouseListener(new MouseListener()
        {
            public void mouseClicked(MouseEvent e)
            {
                if (SwingUtilities.isLeftMouseButton(e))
                {
                    if (System.currentTimeMillis() - lastLeftClick < 1000)
                    {
                        int idColumn = 0;
                        ScreenManager.openIncidentViewer((Integer) pendingIncidentsTable.getValueAt(pendingIncidentsTable.getSelectedRow(), idColumn));
                    }
                    else
                    {
                        lastLeftClick = System.currentTimeMillis();
                    }
                }
                if (SwingUtilities.isRightMouseButton(e))
                {
                    // Fixed to force right click to cause the row to be selected. JD
                    // get the coordinates of the mouse click
                    Point p = e.getPoint();
                    // get the row index that contains that coordinate
                    int rowNumber = pendingIncidentsTable.rowAtPoint(p);
                    // Get the ListSelectionModel of the JTable
                    ListSelectionModel model = pendingIncidentsTable.getSelectionModel();
                    // set the selected interval of rows. Using the "rowNumber"
                    // variable for the beginning and end selects only that one row.
                    model.setSelectionInterval(rowNumber, rowNumber);
                    // go open the drop down menu
                    openDropDownMenu(e);
                }
                else
                {
                    closeDropDownMenu();
                }
            }

            public void mouseEntered(MouseEvent e)
            {
            }

            public void mouseExited(MouseEvent e)
            {
            }

            public void mousePressed(MouseEvent e)
            {
            }

            public void mouseReleased(MouseEvent e)
            {
            }
        });

        addComponentListener(new ComponentListener()
        {
            public void componentHidden(ComponentEvent e)
            {
            }

            public void componentMoved(ComponentEvent e)
            {
                closeDropDownMenu();
            }

            public void componentResized(ComponentEvent e)
            {
            }

            public void componentShown(ComponentEvent e)
            {
            }
        });
    }

    /*
     * Creates the drop down menu that appears when a right click is performed on the table.
     */
    private void initializeDropDownMenu()
    {
        Box menu = new Box(BoxLayout.Y_AXIS);
        initializeDropDownLabels();
        addLabelsToBox(menu);

        //Sets the highlighted background color, note that it does not become "Highlighted" until opaque(true) is called
        setMenuHighlightedBackground(Color.BLUE);

        pendingIncidentsMenu = new JFrame();
        pendingIncidentsMenu.getContentPane().add(menu);
        pendingIncidentsMenu.setPreferredSize(DROP_DOWN_MENU_DIMENSIONS);
        pendingIncidentsMenu.setUndecorated(true);
        pendingIncidentsMenu.pack();
        pendingIncidentsMenu.setVisible(false);
    }

    /*
     * Sets the text and size and adds a listener to each label.
     */
    private void initializeDropDownLabels()
    {
        for (int i = 0; i < dropDownLabels.length; i++)
        {
            dropDownLabels[i] = new JLabel(LABEL_SPACING + LABELS[i]);
            dropDownLabels[i].setMaximumSize(DROP_DOWN_MENU_LABEL_DIMENSIONS);
            dropDownLabels[i].setForeground(Color.GRAY);
        }
        dropDownLabels[2].setForeground(Color.BLACK);
        addMouseListenersToLabel(dropDownLabels[2]);
        dropDownLabels[8].setForeground(Color.BLACK);
        addMouseListenersToLabel(dropDownLabels[8]);
    }

    /*
     * Add the labels to the box in order with separators and spacings in between.
     */
    private void addLabelsToBox(Box menu)
    {
        menu.add(dropDownLabels[0]);
        menu.add(dropDownLabels[1]);

        menu.add(Box.createVerticalStrut(5));
        menu.add(new JSeparator());
        menu.add(Box.createVerticalStrut(5));

        menu.add(dropDownLabels[2]);
        menu.add(dropDownLabels[3]);
        menu.add(dropDownLabels[4]);
        menu.add(dropDownLabels[5]);

        menu.add(Box.createVerticalStrut(5));
        menu.add(new JSeparator());
        menu.add(Box.createVerticalStrut(5));

        menu.add(dropDownLabels[6]);
        menu.add(dropDownLabels[7]);
        menu.add(dropDownLabels[8]);

        menu.add(Box.createVerticalStrut(5));
        menu.add(new JSeparator());
        menu.add(Box.createVerticalStrut(5));

        menu.add(dropDownLabels[9]);
        menu.add(dropDownLabels[10]);

        menu.add(Box.createVerticalStrut(5));
    }

    /*
     * Sets the highlighted color(when the mouse is over it) of the JLabels.
     * Note: the color is not shown until .setOpaque(true) is called.
     * @param color the highlighted color
     */
    public void setMenuHighlightedBackground(Color color)
    {
        for (int i = 0; i < dropDownLabels.length; i++)
        {
            dropDownLabels[i].setBackground(color);
        }
    }

    /*
     * Sets all JLabels to not display a highlighted background
     */
    public void unSelectAllLabels()
    {
        for (int i = 0; i < dropDownLabels.length; i++)
        {
            dropDownLabels[i].setOpaque(false);
        }
    }

    /*
     * Sets the label to have a highlighted background.
     * @param label the label that is selected/highlighted
     */
    public void selectLabel(Object label)
    {
        ((JLabel) label).setOpaque(true);
    }

    /*
     * Performs the label action depending on which label was clicked.
     */
    public void performLabelAction(Object label)
    {
        if (label.equals(dropDownLabels[0]))
        {//Recommend
        }
        else if (label.equals(dropDownLabels[1]))
        {//Add Resources
        }
        else if (label.equals(dropDownLabels[2]))
        {//Open
            int idColumn = 0;
            ScreenManager.openIncidentViewer((Integer) pendingIncidentsTable.getValueAt(
                    pendingIncidentsTable.getSelectedRow(), idColumn));
        }
        else if (label.equals(dropDownLabels[3]))
        {//Recall Incident
        }
        else if (label.equals(dropDownLabels[4]))
        {//Cancel
        }
        else if (label.equals(dropDownLabels[5]))
        {//Link Append
        }
        else if (label.equals(dropDownLabels[6]))
        {//Map
        }
        else if (label.equals(dropDownLabels[7]))
        {//Recall Linked Incidents
        }
        else if (label.equals(dropDownLabels[8]))
        {//Read Notes
            int idColumn = 0;
            ScreenManager.openIncidentViewer((Integer) pendingIncidentsTable.getValueAt(
                    pendingIncidentsTable.getSelectedRow(), idColumn));
        }
        else if (label.equals(dropDownLabels[9]))
        {//Mail
        }
        else if (label.equals(dropDownLabels[10]))
        {//Fax
        }
    }

    /*
     * Factory method. Adds a mouse listeners to the label. The MouseMotionListener detects
     * the mouse's location to highlight the label. The MouseListener detects
     * for clicks and performs the action of the label designates.
     */
    public void addMouseListenersToLabel(JLabel label)
    {
        label.addMouseMotionListener(new MouseMotionListener()
        {
            public void mouseDragged(MouseEvent e)
            {
            }

            public void mouseMoved(MouseEvent e)
            {
                unSelectAllLabels();
                selectLabel(e.getSource());
                pendingIncidentsMenu.revalidate();
                pendingIncidentsMenu.repaint();
            }
        });
        label.addMouseListener(new MouseListener()
        {
            public void mouseClicked(MouseEvent e)
            {
                performLabelAction(e.getSource());
                unSelectAllLabels();
                pendingIncidentsMenu.revalidate();
                pendingIncidentsMenu.repaint();
                pendingIncidentsMenu.setVisible(false);
            }

            public void mouseEntered(MouseEvent e)
            {
            }

            public void mouseExited(MouseEvent e)
            {
            }

            public void mousePressed(MouseEvent e)
            {
            }

            public void mouseReleased(MouseEvent e)
            {
            }
        });
    }

    /*
     * Displays the menu where the right click occurred.
     */
    public void openDropDownMenu(MouseEvent e)
    {
        pendingIncidentsMenu.setLocation(e.getX() + this.getX(), e.getY() + this.getY());
        pendingIncidentsMenu.setVisible(true);
    }

    /*
     * Hides the menu.
     */
    public void closeDropDownMenu()
    {
        unSelectAllLabels();
        pendingIncidentsMenu.revalidate();
        pendingIncidentsMenu.repaint();
        pendingIncidentsMenu.setVisible(false);
    }

    /*
     * Refreshes the data in the table by updating all data and repainting the
     * screen. It saves user preferences(like column sizes, selected row, sorted preferences)
     * and applies them to the updated model it receives from the server.
     */
    public void refreshTable()
    {

        if (pendingIncidentsTable.getTableHeader().getResizingColumn() == null)
        {//only update info if resize not in progress
            try
            {
                int index = pendingIncidentsTable.getSelectedRow();
                int[] columnWidths = new int[20];
                List<? extends SortKey> keys = pendingIncidentsTable.getRowSorter().getSortKeys();
                for (int i = 0; i < pendingIncidentsTable.getColumnCount(); i++)
                {
                    columnWidths[i] = pendingIncidentsTable.getColumnModel().getColumn(i).getWidth();
                }

                pendingIncidentsTable.setModel(ScreenManager.theCoordinator.getCadDataTable(CADDataEnums.TABLE.PENDING_INCIDENTS));

                for (int i = 0; i < pendingIncidentsTable.getColumnCount(); i++)
                {
                    pendingIncidentsTable.getColumnModel().getColumn(i).setPreferredWidth(columnWidths[i]);
                }
                pendingIncidentsTable.getRowSorter().setSortKeys(keys);
                pendingIncidentsTable.getSelectionModel().setSelectionInterval(index, index);
            } catch (RemoteException ex)
            {
                System.out.println("RemoteException in refreshTable method of PendingIncidents.java");
                System.out.println(ex.getMessage());

            }
            revalidate();
            repaint();
        }
    }

    /*
     * Makes screen visible.
     */
    public void open()
    {
        setVisible(true);
    }

    /*
     * Hides screen.
     */
    public void close()
    {
        setVisible(false);
    }
}