package net.knarcraft.minecraftserverlauncher.userinterface;

import net.knarcraft.minecraftserverlauncher.profile.Controller;
import net.knarcraft.minecraftserverlauncher.profile.Profile;
import net.knarcraft.minecraftserverlauncher.utility.CommonFunctions;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Objects;

/**
 * This class takes care of the GUI's top menu
 */
public class ServerLauncherMenu implements ActionListener {

    private JMenuBar menuBar;
    //Options
    private JCheckBoxMenuItem runInBackgroundCheckBoxMenuItem;
    private JCheckBoxMenuItem delayStartupCheckBoxMenuItem;
    private JCheckBoxMenuItem downloadJarsCheckBoxMenuItem;
    //Help
    private JMenuItem errorsMenuItem;
    private JMenuItem setupMenuItem;
    private JMenuItem manualUpdateMenuItem;
    //Info/options
    private JMenuItem runInBackgroundMenuItem;
    private JMenuItem delayStartupMenuItem;
    private JMenuItem downloadJarsMenuItem;
    //Info/about
    private JMenuItem aboutMenuItem;
    private JMenuItem storyMenuItem;

    private Controller controller;
    private ServerLauncherGUI serverLauncherGUI;

    /**
     * Initializes a new server launcher menu
     *
     * @param menuBar <p>The menu bar to attach items to</p>
     * @param serverLauncherGUI <p>The server launcher GUI to use</p>
     */
    public ServerLauncherMenu(JMenuBar menuBar, ServerLauncherGUI serverLauncherGUI) {
        this.controller = Controller.getInstance();
        this.menuBar = menuBar;
        this.serverLauncherGUI = serverLauncherGUI;
        initialize();
    }

    /**
     * Initializes all GUI elements
     */
    public void initialize() {
        JMenu mnOptions = new JMenu("Options");
        menuBar.add(mnOptions);

        runInBackgroundCheckBoxMenuItem = new JCheckBoxMenuItem("Run in background on exit");
        mnOptions.add(runInBackgroundCheckBoxMenuItem);
        runInBackgroundCheckBoxMenuItem.addActionListener(this);

        delayStartupCheckBoxMenuItem = new JCheckBoxMenuItem("Delay Startup");
        mnOptions.add(delayStartupCheckBoxMenuItem);
        delayStartupCheckBoxMenuItem.addActionListener(this);

        downloadJarsCheckBoxMenuItem = new JCheckBoxMenuItem("Download jars");
        mnOptions.add(downloadJarsCheckBoxMenuItem);
        downloadJarsCheckBoxMenuItem.addActionListener(this);

        JMenu mnHelp = new JMenu("Help");
        menuBar.add(mnHelp);

        errorsMenuItem = new JMenuItem("Errors");
        mnHelp.add(errorsMenuItem);
        errorsMenuItem.addActionListener(this);

        setupMenuItem = new JMenuItem("Setup");
        mnHelp.add(setupMenuItem);
        setupMenuItem.addActionListener(this);

        manualUpdateMenuItem = new JMenuItem("Manual update");
        mnHelp.add(manualUpdateMenuItem);
        manualUpdateMenuItem.addActionListener(this);

        JMenu mnInfo = new JMenu("Info");
        menuBar.add(mnInfo);

        JMenu mnOptionsInfo = new JMenu("Options");
        mnInfo.add(mnOptionsInfo);

        runInBackgroundMenuItem = new JMenuItem("Run in background on exit");
        mnOptionsInfo.add(runInBackgroundMenuItem);
        runInBackgroundMenuItem.addActionListener(this);

        delayStartupMenuItem = new JMenuItem("Delay Startup");
        mnOptionsInfo.add(delayStartupMenuItem);
        delayStartupMenuItem.addActionListener(this);

        downloadJarsMenuItem = new JMenuItem("Download jars");
        mnOptionsInfo.add(downloadJarsMenuItem);
        downloadJarsMenuItem.addActionListener(this);

        JMenu mnAbout = new JMenu("About");
        mnInfo.add(mnAbout);

        aboutMenuItem = new JMenuItem("About");
        mnAbout.add(aboutMenuItem);
        aboutMenuItem.addActionListener(this);

        storyMenuItem = new JMenuItem("Story");
        mnAbout.add(storyMenuItem);
        storyMenuItem.addActionListener(this);
    }

    public void update() {
        runInBackgroundCheckBoxMenuItem.setState(controller.getRunInBackground());
        delayStartupCheckBoxMenuItem.setState(controller.getDelayStartup() > 0);
        downloadJarsCheckBoxMenuItem.setState(controller.getDownloadAllJars());
    }

    @Override
    public void actionPerformed(ActionEvent actionEvent) {
        Object actionSource = actionEvent.getSource();
        if (actionSource == runInBackgroundCheckBoxMenuItem) {
            background();
        } else if (actionSource == delayStartupCheckBoxMenuItem) {
            delay();
        } else if (actionSource == downloadJarsCheckBoxMenuItem) {
            downloadJars();
        } else if (actionSource == errorsMenuItem) {
            CommonFunctions.goToURL(serverLauncherGUI.getMessage("infoURL"));
        } else if (actionSource == setupMenuItem) {
            serverLauncherGUI.showMessage("Setup", serverLauncherGUI.getMessage("setupText"));
        } else if (actionSource == manualUpdateMenuItem) {
            CommonFunctions.goToURL(serverLauncherGUI.getMessage("manualUpdateURL"));
        } else if (actionSource == runInBackgroundMenuItem) {
            serverLauncherGUI.showMessage("Run in background", serverLauncherGUI.getMessage("runInBackgroundText"));
        } else if (actionSource == delayStartupMenuItem) {
            serverLauncherGUI.showMessage("Delay startup", serverLauncherGUI.getMessage("delayStartupText"));
        } else if (actionSource == downloadJarsMenuItem) {
            serverLauncherGUI.showMessage("Download jars", serverLauncherGUI.getMessage("downloadJarsText"));
        } else if (actionSource == aboutMenuItem) {
            serverLauncherGUI.showMessage("About", serverLauncherGUI.getMessage("aboutText"));
        } else if (actionSource == storyMenuItem) {
            CommonFunctions.goToURL(serverLauncherGUI.getMessage("storyURL"));
        }
    }

    /**
     * Asks the user for a delay if checked, and sets the value to the current profile
     */
    private void delay() {
        String selectedProfile = serverLauncherGUI.getSelectedProfile();
        if (selectedProfile != null) {
            Profile profile = controller.getProfileByName(selectedProfile);
            if (delayStartupCheckBoxMenuItem.isSelected()) {
                String response = JOptionPane.showInputDialog("Seconds to delay: ");
                if (response == null) {
                    delayStartupCheckBoxMenuItem.setState(false);
                    return;
                }
                int parsed = Integer.parseInt(response);
                Objects.requireNonNull(profile).setDelayStartup(parsed);
            } else {
                Objects.requireNonNull(profile).setDelayStartup(0);
            }
        } else {
            serverLauncherGUI.showError("No profile selected");
        }
    }

    /**
     * Saves the runInBackground setting to the current profile
     */
    private void background() {
        String selectedProfile = serverLauncherGUI.getSelectedProfile();
        if (selectedProfile != null) {
            Profile profile = controller.getProfileByName(selectedProfile);
            Objects.requireNonNull(profile).setRunInBackground(runInBackgroundCheckBoxMenuItem.isSelected());
        } else {
            serverLauncherGUI.showError("No profile selected");
        }
    }

    /**
     * Saves the downloadJars setting to the current profile
     */
    private void downloadJars() {
        String selectedProfile = serverLauncherGUI.getSelectedProfile();
        if (selectedProfile != null) {
            controller.setDownloadAllJars(downloadJarsCheckBoxMenuItem.isSelected());
        } else {
            serverLauncherGUI.showError("No profile selected");
        }
    }
}