content: /*
   * SoulFire
   * Copyright (C) 2024  AlexProgrammerDE
   *
   * This program is free software: you can redistribute it and/or modify
   * it under the terms of the GNU 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 General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <https://www.gnu.org/licenses/>.
   */
  package com.soulfiremc.server.command.builtin;
  
  import com.mojang.brigadier.CommandDispatcher;
  import com.mojang.brigadier.arguments.StringArgumentType;
  import com.mojang.brigadier.context.CommandContext;
  import com.mojang.brigadier.suggestion.SuggestionProvider;
  import com.mojang.brigadier.suggestion.Suggestions;
  import com.mojang.brigadier.suggestion.SuggestionsBuilder;
  import com.soulfiremc.server.InstanceManager;
  import com.soulfiremc.server.command.CommandSourceStack;
  
  import java.util.Set;
  import java.util.concurrent.CompletableFuture;
  import java.util.stream.Collectors;
  
  import static com.soulfiremc.server.command.brigadier.BrigadierHelper.*;
  
  public final class InstanceCommand {
    public static void register(CommandDispatcher<CommandSourceStack> dispatcher) {
      dispatcher.register(
        literal("instance")
          .then(
            argument("instance_names", StringArgumentType.string())
              .suggests(InstanceNamesSuggester.INSTANCE)
              .forward(
                dispatcher.getRoot(),
                helpSingleRedirect(
                  "Instead of running a command for all possible instances, run it for a specific list of instances. Use a comma to separate the names",
                  c -> {
                    var instanceNames = Set.of(StringArgumentType.getString(c, "instance_names").split(","));
                    return c.getSource()
                      .withInstanceIds(c.getSource().getVisibleInstances()
                        .stream()
                        .filter(instance -> instanceNames.contains(instance.friendlyNameCache().get()))
                        .map(InstanceManager::id)
                        .collect(Collectors.toSet()));
                  }
                ),
                false
              )));
    }
  
    private static class InstanceNamesSuggester implements SuggestionProvider<CommandSourceStack> {
      private static final InstanceNamesSuggester INSTANCE = new InstanceNamesSuggester();
  
      @Override
      public CompletableFuture<Suggestions> getSuggestions(CommandContext<CommandSourceStack> c, SuggestionsBuilder b) {
        c.getSource().getVisibleInstances().forEach(instance -> b.suggest(instance.friendlyNameCache().get()));
  
        return b.buildFuture();
      }
    }
  }
  