package net.knarcraft.minecraftserverlauncher.userinterface;

import net.knarcraft.minecraftserverlauncher.Main;
import net.knarcraft.minecraftserverlauncher.server.ServerHandler;
import net.knarcraft.minecraftserverlauncher.server.ServerTypeHandler;
import net.knarcraft.minecraftserverlauncher.server.servertypes.ServerType;

import javax.naming.ConfigurationException;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

/**
 * Represents a visual server tab used to configure a server
 *
 * @author Kristian Knarvik <kristian.knarvik@knett.no>
 * @version 1.0.0
 * @since 1.0.0
 */
public class ServerTab implements ActionListener {
    private final JComboBox<String> serverTypes;
    private final JComboBox<String> serverVersions;
    private final JComboBox<String> maxRam;
    private final JCheckBox enabledCheckbox;
    private final JButton removeServerButton;
    private final JButton browseButton;
    private final JTextField directory;
    private final JPanel panel;
    private final String name;

    /**
     * Initializes a new server tab with the given name
     *
     * @param name <p>The name of the new server tab</p>
     * @throws ConfigurationException <p>If unable to create the new tab</p>
     */
    public ServerTab(String name) throws ConfigurationException {
        this.name = name;
        panel = new JPanel();
        Main.getController().getGUI().getPane().addTab(name, null, panel, null);
        SpringLayout sl_panel_3 = new SpringLayout();
        panel.setLayout(sl_panel_3);

        JLabel lblServerType = new JLabel("Server type");
        sl_panel_3.putConstraint(SpringLayout.WEST, lblServerType, 10, SpringLayout.WEST, panel);
        panel.add(lblServerType);

        JLabel lblServerVersion = new JLabel("Server version");
        sl_panel_3.putConstraint(SpringLayout.NORTH, lblServerVersion, 6, SpringLayout.SOUTH, lblServerType);
        sl_panel_3.putConstraint(SpringLayout.WEST, lblServerVersion, 10, SpringLayout.WEST, panel);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, lblServerVersion, 26, SpringLayout.SOUTH, lblServerType);
        panel.add(lblServerVersion);

        serverTypes = new JComboBox<>(ServerTypeHandler.getTypeNames());
        sl_panel_3.putConstraint(SpringLayout.NORTH, serverTypes, 10, SpringLayout.NORTH, panel);
        sl_panel_3.putConstraint(SpringLayout.WEST, serverTypes, 5, SpringLayout.EAST, lblServerVersion);
        sl_panel_3.putConstraint(SpringLayout.EAST, serverTypes, 154, SpringLayout.WEST, serverTypes);
        sl_panel_3.putConstraint(SpringLayout.NORTH, lblServerType, 0, SpringLayout.NORTH, serverTypes);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, lblServerType, 0, SpringLayout.SOUTH, serverTypes);
        panel.add(serverTypes);
        serverTypes.addActionListener(this);

        serverVersions = new JComboBox<>(ServerTypeHandler.getServerTypes().get(0).getVersions());
        sl_panel_3.putConstraint(SpringLayout.NORTH, serverVersions, 6, SpringLayout.SOUTH, serverTypes);
        sl_panel_3.putConstraint(SpringLayout.EAST, serverVersions, 0, SpringLayout.EAST, serverTypes);
        sl_panel_3.putConstraint(SpringLayout.WEST, serverVersions, 6, SpringLayout.EAST, lblServerVersion);
        sl_panel_3.putConstraint(SpringLayout.NORTH, lblServerVersion, 0, SpringLayout.NORTH, serverVersions);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, lblServerVersion, 0, SpringLayout.SOUTH, serverVersions);
        panel.add(serverVersions);
        serverVersions.addActionListener(this);

        JLabel lblMaxRam = new JLabel("Max ram");
        sl_panel_3.putConstraint(SpringLayout.NORTH, lblMaxRam, 0, SpringLayout.NORTH, serverTypes);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, lblMaxRam, 0, SpringLayout.SOUTH, serverTypes);
        sl_panel_3.putConstraint(SpringLayout.WEST, lblMaxRam, 6, SpringLayout.EAST, serverTypes);
        panel.add(lblMaxRam);

        maxRam = new JComboBox<>(ServerHandler.getRamList());
        sl_panel_3.putConstraint(SpringLayout.NORTH, maxRam, 0, SpringLayout.NORTH, serverTypes);
        sl_panel_3.putConstraint(SpringLayout.WEST, maxRam, 6, SpringLayout.EAST, lblMaxRam);
        sl_panel_3.putConstraint(SpringLayout.EAST, maxRam, -10, SpringLayout.EAST, panel);
        panel.add(maxRam);
        maxRam.addActionListener(this);

        enabledCheckbox = new JCheckBox("Enabled");
        sl_panel_3.putConstraint(SpringLayout.WEST, enabledCheckbox, 10, SpringLayout.WEST, panel);
        panel.add(enabledCheckbox);
        enabledCheckbox.addActionListener(this);

        removeServerButton = new JButton("Remove server");
        sl_panel_3.putConstraint(SpringLayout.NORTH, removeServerButton, 0, SpringLayout.NORTH, serverVersions);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, removeServerButton, 0, SpringLayout.SOUTH, serverVersions);
        sl_panel_3.putConstraint(SpringLayout.WEST, removeServerButton, 6, SpringLayout.EAST, serverVersions);
        sl_panel_3.putConstraint(SpringLayout.EAST, removeServerButton, -10, SpringLayout.EAST, panel);
        panel.add(removeServerButton);
        removeServerButton.addActionListener(this);

        JLabel lblDirectory = new JLabel("Directory");
        sl_panel_3.putConstraint(SpringLayout.WEST, lblDirectory, 6, SpringLayout.EAST, enabledCheckbox);
        panel.add(lblDirectory);

        directory = new JTextField();
        sl_panel_3.putConstraint(SpringLayout.WEST, directory, 6, SpringLayout.EAST, lblDirectory);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, lblDirectory, 0, SpringLayout.SOUTH, directory);
        sl_panel_3.putConstraint(SpringLayout.NORTH, lblDirectory, 0, SpringLayout.NORTH, directory);
        sl_panel_3.putConstraint(SpringLayout.NORTH, enabledCheckbox, 0, SpringLayout.NORTH, directory);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, enabledCheckbox, 0, SpringLayout.SOUTH, directory);
        panel.add(directory);
        directory.setColumns(10);
        directory.addActionListener(this);

        browseButton = new JButton("Browse");
        sl_panel_3.putConstraint(SpringLayout.EAST, directory, -6, SpringLayout.WEST, browseButton);
        sl_panel_3.putConstraint(SpringLayout.NORTH, browseButton, 3, SpringLayout.SOUTH, removeServerButton);
        sl_panel_3.putConstraint(SpringLayout.EAST, browseButton, -10, SpringLayout.EAST, panel);
        sl_panel_3.putConstraint(SpringLayout.SOUTH, directory, 0, SpringLayout.SOUTH, browseButton);
        sl_panel_3.putConstraint(SpringLayout.NORTH, directory, 0, SpringLayout.NORTH, browseButton);
        panel.add(browseButton);
        browseButton.addActionListener(this);
    }

    /**
     * Updates the server tab components according to the received parameters
     *
     * @param path          <p>The new path of the server tab</p>
     * @param isEnabled     <p>Whether to mark the server as enabled</p>
     * @param typeName      <p>The name of the selected server type</p>
     * @param serverVersion <p>The version of the server</p>
     * @param maxRam        <p>The maximum usable ram for the server</p>
     */
    public void setData(String path, boolean isEnabled, String typeName, String serverVersion, String maxRam) throws ConfigurationException {
        this.directory.setText(path);
        this.enabledCheckbox.setSelected(isEnabled);
        this.serverTypes.setSelectedItem(typeName);
        this.updateServerVersion();
        this.serverVersions.setSelectedItem(serverVersion);
        this.maxRam.setSelectedItem(maxRam);
    }

    /**
     * Gets the JPanel containing the server tab's elements
     *
     * @return <p>The JPanel containing the server tab's elements</p>
     */
    public JPanel getPanel() {
        return this.panel;
    }

    /**
     * Gets the file path selected by the user
     *
     * @return <p>The file path selected by the user</p>
     */
    public String getPath() {
        return this.directory.getText();
    }

    /**
     * Gets the maximum RAM selected by the user
     *
     * @return <p>The maximum RAM selected by the user</p>
     */
    public String getMaxRam() {
        Object selected = this.maxRam.getSelectedItem();
        if (selected != null) {
            return selected.toString();
        } else {
            return "512M";
        }
    }

    /**
     * Gets the server type selected by the user
     *
     * @return <p>The server type selected by the user</p>
     */
    public String getType() {
        Object selected = this.serverTypes.getSelectedItem();
        if (selected != null) {
            return selected.toString();
        } else {
            return "Vanilla";
        }
    }

    /**
     * Gets the server version selected by the user
     *
     * @return <p>The server version selected by the user</p>
     */
    public String getVersion() {
        Object selected = this.serverVersions.getSelectedItem();
        if (selected != null) {
            return selected.toString();
        } else {
            return "Latest";
        }
    }

    /**
     * Checks whether this server is enabled
     *
     * @return <p>True if this server is enabled</p>
     */
    public boolean isEnabled() {
        return this.enabledCheckbox.isSelected();
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == removeServerButton) {
            remove();
        } else if (e.getSource() == browseButton) {
            browse();
        } else if (e.getSource() == serverTypes) {
            try {
                updateServerVersion();
            } catch (ConfigurationException e1) {
                e1.printStackTrace();
            }
        }
    }

    /**
     * Removes the collection containing this ServerTab, and updates everything necessary
     */
    private void remove() {
        Main.getController().getCurrentProfile().removeCollection(this.name);
        Main.getController().getGUI().updateWithSavedProfileData();
        Main.getController().getCurrentProfile().updateConsoles();
    }

    /**
     * Asks the user for server location and updates the GUI if given a valid value
     */
    private void browse() {
        File chosenFolder = Main.getController().getGUI().askForDirectory("Server folder");
        if (chosenFolder != null) {
            directory.setText(chosenFolder.toString());
        }
    }

    /**
     * Updates server version choices according to the server type
     */
    private void updateServerVersion() throws ConfigurationException {
        serverVersions.removeAllItems();
        String selectedServerTypes = null;
        Object selectedType = serverTypes.getSelectedItem();
        if (selectedType != null) {
            selectedServerTypes = selectedType.toString();
        }
        if (selectedServerTypes == null) {
            return;
        }
        if (selectedServerTypes.equals("Custom")) {
            serverVersions.setEditable(true);
        } else {
            serverVersions.setEditable(false);
            ServerType current = null;
            for (ServerType servertype : ServerTypeHandler.getServerTypes()) {
                if (servertype.getName().equals(selectedServerTypes)) {
                    current = servertype;
                }
            }
            if (current != null) {
                for (String version : current.getVersions()) {
                    serverVersions.addItem(version);
                }
            }
        }
    }
}