LibsDisguises/src/main/java/me/libraryaddict/disguise/commands/LibsDisguisesCommand.java

package me.libraryaddict.disguise.commands;

import me.libraryaddict.disguise.DisguiseConfig;
import me.libraryaddict.disguise.LibsDisguises;
import me.libraryaddict.disguise.disguisetypes.MetaIndex;
import me.libraryaddict.disguise.utilities.LibsPremium;
import me.libraryaddict.disguise.utilities.translations.LibsMsg;
import net.md_5.bungee.api.chat.ClickEvent;
import net.md_5.bungee.api.chat.ComponentBuilder;
import net.md_5.bungee.api.chat.HoverEvent;
import org.bukkit.ChatColor;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.command.TabCompleter;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class LibsDisguisesCommand implements CommandExecutor, TabCompleter {
    protected ArrayList<String> filterTabs(ArrayList<String> list, String[] origArgs) {
        if (origArgs.length == 0)
            return list;

        Iterator<String> itel = list.iterator();
        String label = origArgs[origArgs.length - 1].toLowerCase();

        while (itel.hasNext()) {
            String name = itel.next();

            if (name.toLowerCase().startsWith(label))
                continue;

            itel.remove();
        }

        return list;
    }

    protected String[] getArgs(String[] args) {
        ArrayList<String> newArgs = new ArrayList<>();

        for (int i = 0; i < args.length - 1; i++) {
            String s = args[i];

            if (s.trim().isEmpty())
                continue;

            newArgs.add(s);
        }

        return newArgs.toArray(new String[0]);
    }

    @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
        if (args.length == 0) {
            LibsDisguises disguises = LibsDisguises.getInstance();

            String version = disguises.getDescription().getVersion();

            if (!disguises.isReleaseBuild()) {
                version += "-";

                if (disguises.isNumberedBuild()) {
                    version += "b";
                }

                version += disguises.getBuildNo();
            }

            sender.sendMessage(ChatColor.DARK_GREEN + "This server is running " + "Lib's Disguises v" + version +
                    " by libraryaddict, formerly maintained by Byteflux and NavidK0." +
                    (sender.hasPermission("libsdisguises.reload") ?
                            "\nUse " + ChatColor.GREEN + "/libsdisguises " + "reload" + ChatColor.DARK_GREEN +
                                    " to reload the config. All disguises will be blown by doing this" + "." : ""));

            if (LibsPremium.isPremium()) {
                sender.sendMessage(ChatColor.DARK_GREEN + "This server supports the plugin developer!");
            }
        } else if (args.length > 0) {
            if (args[0].equalsIgnoreCase("reload")) {
                if (!sender.hasPermission("libsdisguises.reload")) {
                    sender.sendMessage(LibsMsg.NO_PERM.get());
                    return true;
                }

                DisguiseConfig.loadConfig();
                sender.sendMessage(LibsMsg.RELOADED_CONFIG.get());
                return true;
            } else if (args[0].equalsIgnoreCase("metainfo") || args[0].equalsIgnoreCase("meta")) {
                if (!sender.hasPermission("libsdisguises.metainfo")) {
                    sender.sendMessage(LibsMsg.NO_PERM.get());
                    return true;
                }

                if (args.length > 1) {
                    MetaIndex index = MetaIndex.getMetaIndexByName(args[1]);

                    if (index == null) {
                        sender.sendMessage(LibsMsg.META_NOT_FOUND.get());
                        return true;
                    }

                    sender.sendMessage(index.toString());
                } else {
                    ArrayList<String> names = new ArrayList<>();

                    for (MetaIndex index : MetaIndex.values()) {
                        names.add(MetaIndex.getName(index));
                    }

                    names.sort(String::compareToIgnoreCase);

                    ComponentBuilder builder = new ComponentBuilder("").appendLegacy(LibsMsg.META_VALUES.get());

                    Iterator<String> itel = names.iterator();

                    while (itel.hasNext()) {
                        String name = itel.next();

                        builder.appendLegacy(name);
                        builder.event(
                                new ClickEvent(ClickEvent.Action.RUN_COMMAND, cmd.getName() + " metainfo " + name));
                        builder.event(new HoverEvent(HoverEvent.Action.SHOW_TEXT,
                                new ComponentBuilder("").appendLegacy(LibsMsg.META_CLICK_SHOW.get(name)).create()));

                        if (itel.hasNext()) {
                            builder.appendLegacy(LibsMsg.META_VALUE_SEPERATOR.get());
                        }
                    }

                    sender.spigot().sendMessage(builder.create());
                }
            } else {
                sender.sendMessage(LibsMsg.LIBS_COMMAND_WRONG_ARG.get());
            }
        }
        return true;
    }

    @Override
    public List<String> onTabComplete(CommandSender sender, Command cmd, String label, String[] origArgs) {
        ArrayList<String> tabs = new ArrayList<>();
        String[] args = getArgs(origArgs);

        if (args.length == 0)
            tabs.add("Reload");

        return filterTabs(tabs, origArgs);
    }
}