/*
 * Copyright (c) 2006-2015 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.dmdirc.addons.ui_swing.dialogs.paste;

import com.dmdirc.DMDircMBassador;
import com.dmdirc.addons.ui_swing.UIUtilities;
import com.dmdirc.addons.ui_swing.components.frames.InputTextFrame;
import com.dmdirc.addons.ui_swing.components.inputfields.SwingInputHandler;
import com.dmdirc.addons.ui_swing.components.inputfields.TextAreaInputField;
import com.dmdirc.addons.ui_swing.components.text.TextLabel;
import com.dmdirc.addons.ui_swing.dialogs.StandardDialog;
import com.dmdirc.interfaces.CommandController;
import com.dmdirc.interfaces.config.AggregateConfigProvider;
import com.dmdirc.plugins.ServiceManager;
import com.dmdirc.addons.ui_swing.components.IconManager;
import com.dmdirc.ui.input.TabCompleterUtils;
import com.dmdirc.ui.messages.ColourManagerFactory;

import java.awt.Window;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.AbstractAction;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JScrollPane;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.WindowConstants;

import net.miginfocom.swing.MigLayout;

/**
 * Allows the user to confirm and modify a multi-line paste.
 */
public final class PasteDialog extends StandardDialog implements ActionListener,
        KeyListener {

    /** Serial version UID. */
    private static final long serialVersionUID = 4;
    /** Number of lines Label. */
    private TextLabel infoLabel;
    /** Text area scrollpane. */
    private JScrollPane scrollPane;
    /** Text area. */
    private TextAreaInputField textField;
    /** Parent frame. */
    private final InputTextFrame parent;
    /** Edit button. */
    private JButton editButton;
    /** Parent window. */
    private final Window parentWindow;
    /** Icon manager to retrieve icons with. */
    private final IconManager iconManager;
    /** Service Manager to retrieve tab completers with. */
    private final ServiceManager serviceManager;
    /** Config to read settings from. */
    private final AggregateConfigProvider config;
    /** The controller to use to retrieve command information. */
    private final CommandController commandController;

    /**
     * Creates a new instance of PreferencesDialog.
     *
     * @param iconManager       Icon manager to retrieve icons with
     * @param config            Config to read settings from
     * @param serviceManager     to retrieve tab completers with
     * @param commandController The controller to use to retrieve command information.
     * @param eventBus          The bus to dispatch events on.
     * @param newParent         The frame that owns this dialog
     * @param text              text to show in the paste dialog
     * @param parentWindow      Parent window
     */
    public PasteDialog(
            final IconManager iconManager,
            final AggregateConfigProvider config,
            final ServiceManager serviceManager,
            final CommandController commandController,
            final DMDircMBassador eventBus,
            final InputTextFrame newParent,
            final String text,
            final Window parentWindow,
            final ColourManagerFactory colourManagerFactory,
            final TabCompleterUtils tabCompleterUtils) {
        super(parentWindow, ModalityType.MODELESS);

        parent = newParent;
        this.parentWindow = parentWindow;
        this.iconManager = iconManager;
        this.config = config;
        this.serviceManager = serviceManager;
        this.commandController = commandController;

        initComponents(eventBus, text, colourManagerFactory, tabCompleterUtils);
        initListeners();

        setFocusTraversalPolicy(new PasteDialogFocusTraversalPolicy(
                getCancelButton(), editButton, getOkButton()));

        setFocusable(true);
        getOkButton().requestFocusInWindow();
        getOkButton().setSelected(true);
    }

    /**
     * Initialises GUI components.
     *
     * @param text text to show in the dialog
     */
    private void initComponents(final DMDircMBassador eventBus, final String text,
            final ColourManagerFactory colourManagerFactory,
            final TabCompleterUtils tabCompleterUtils) {
        scrollPane = new JScrollPane();
        textField = new TextAreaInputField(iconManager, colourManagerFactory, config, text);
        editButton = new JButton("Edit");
        infoLabel = new TextLabel();

        UIUtilities.addUndoManager(textField);

        orderButtons(new JButton(), new JButton());
        getOkButton().setText("Send");

        setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
        setTitle("Multi-line paste");
        setResizable(false);

        infoLabel.setText("This will be sent as "
                + parent.getContainer().getInputModel().get().getNumLines(textField.getText())
                + " lines. Are you sure you want to continue?");

        textField.setColumns(50);
        textField.setRows(10);

        new SwingInputHandler(serviceManager, textField, commandController,
                parent.getContainer().getInputModel().get().getCommandParser(),
                parent.getContainer(), tabCompleterUtils, eventBus)
                .setTypes(false, false, true,false);

        scrollPane.setViewportView(textField);
        scrollPane.setVisible(false);

        getContentPane().setLayout(new MigLayout("fill, hidemode 3"));
        getContentPane().add(infoLabel, "wrap, growx, pushx, span 3");
        getContentPane().add(scrollPane, "wrap, grow, push, span 3");
        getContentPane().add(getLeftButton(), "right, sg button");
        getContentPane().add(editButton, "right, sg button");
        getContentPane().add(getRightButton(), "right, sg button");
    }

    /**
     * Initialises listeners for this dialog.
     */
    private void initListeners() {
        getOkButton().addActionListener(this);
        getCancelButton().addActionListener(this);
        editButton.addActionListener(this);
        textField.addKeyListener(this);

        getRootPane().getActionMap().put("rightArrowAction",
                new AbstractAction("rightArrowAction") {
                    private static final long serialVersionUID = 1;

                    @Override
                    public void actionPerformed(final ActionEvent evt) {
                        final JButton button = (JButton) getFocusTraversalPolicy().
                        getComponentAfter(PasteDialog.this, getFocusOwner());
                        button.requestFocusInWindow();
                        button.setSelected(true);
                    }
                });

        getRootPane().getActionMap().put("leftArrowAction",
                new AbstractAction("leftArrowAction") {
                    private static final long serialVersionUID = 1;

                    @Override
                    public void actionPerformed(final ActionEvent evt) {
                        final JButton button = (JButton) getFocusTraversalPolicy().
                        getComponentBefore(PasteDialog.this, getFocusOwner());
                        button.requestFocusInWindow();
                        button.setSelected(true);
                    }
                });

        getRootPane().getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(
                KeyStroke.getKeyStroke(KeyEvent.VK_RIGHT, 0), "rightArrowAction");
        getRootPane().getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW).put(
                KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0), "leftArrowAction");
    }

    @Override
    public void actionPerformed(final ActionEvent actionEvent) {
        if (getOkButton().equals(actionEvent.getSource())) {
            if (!textField.getText().isEmpty()) {
                final String[] lines = textField.getText().split("(\n|\r\n|\r)",
                        Integer.MAX_VALUE);
                for (final String line : lines) {
                    if (!line.isEmpty()) {
                        parent.getContainer().getInputModel().ifPresent(im -> im.sendLine(line));
                        parent.getInputHandler().addToBuffer(line);
                    }
                }
            }
            dispose();
        } else if (editButton.equals(actionEvent.getSource())) {
            editButton.setEnabled(false);
            setResizable(true);
            scrollPane.setVisible(true);
            infoLabel.setText("This will be sent as "
                    + parent.getContainer().getInputModel().get().getNumLines(textField.getText())
                    + " lines.");
            setResizable(true);
            pack();
            SwingUtilities.invokeLater(() -> setLocationRelativeTo(parentWindow));
        } else if (getCancelButton().equals(actionEvent.getSource())) {
            dispose();
        }
    }

    @Override
    public void keyTyped(final KeyEvent e) {
        infoLabel.setText("This will be sent as "
                + parent.getContainer().getInputModel().get().getNumLines(textField.getText())
                + " lines.");
    }

    @Override
    public void keyPressed(final KeyEvent e) {
        // Do nothing
    }

    @Override
    public void keyReleased(final KeyEvent e) {
        // Do nothing
    }

}