BauSystem/BauSystem_Main/src/de/steamwar/bausystem/commands/CommandTraceTabCompleter.java

/* 
    This file is a part of the SteamWar software.
    
    Copyright (C) 2020  SteamWar.de-Serverteam

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/

package de.steamwar.bausystem.commands;

import de.steamwar.bausystem.tracer.record.RecordStateMachine;
import de.steamwar.bausystem.tracer.record.RecordStatus;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.command.TabCompleter;
import org.bukkit.entity.Player;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class CommandTraceTabCompleter implements TabCompleter {

    @Override
    public List<String> onTabComplete(CommandSender sender, Command command, String label, String[] args) {
        if(!(sender instanceof Player)) return new ArrayList<>();
        return tracerTabComplete((Player) sender, args);
    }

    private List<String> tracerTabComplete(Player player, String[] args) {
        List<String> tabComplete = new ArrayList<>();
        if (RecordStateMachine.getRecordStatus() == RecordStatus.IDLE || RecordStateMachine.getRecordStatus() == RecordStatus.IDLE_AUTO) {
            tabComplete.add("start");
        } else {
            tabComplete.add("stop");
        }
        tabComplete.add("toggleauto");
        tabComplete.add("auto");
        tabComplete.add("show");
        if (args[0].equalsIgnoreCase("show") && args.length == 2) {
            return manageList(new ArrayList<>(Arrays.asList("nowater", "basic", "default", "advanced", "advanced-nowater")), args, 1);
        }
        tabComplete.add("hide");
        tabComplete.add("delete");
        tabComplete.add("clear");
        //tabComplete.add("gui");
        //tabComplete.add("list");

        if (args.length >= 2) {
            return new ArrayList<>();
        }
        return manageList(tabComplete, args, 0);
    }

    private List<String> manageList(List<String> strings, String[] args, int index) {
        for (int i = strings.size() - 1; i >= 0; i--) {
            if (!strings.get(i).startsWith(args[index])) {
                strings.remove(i);
            }
        }
        return strings;
    }

}