FlagCommand.java

/*
 * PlotSquared, a land and world management plugin for Minecraft.
 * Copyright (C) IntellectualSites <https://intellectualsites.com>
 * Copyright (C) IntellectualSites team and contributors
 *
 * 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.plotsquared.core.command;

import com.google.inject.Inject;
import com.plotsquared.core.PlotSquared;
import com.plotsquared.core.configuration.Settings;
import com.plotsquared.core.configuration.caption.CaptionUtility;
import com.plotsquared.core.configuration.caption.StaticCaption;
import com.plotsquared.core.configuration.caption.TranslatableCaption;
import com.plotsquared.core.events.PlotFlagAddEvent;
import com.plotsquared.core.events.PlotFlagRemoveEvent;
import com.plotsquared.core.events.Result;
import com.plotsquared.core.location.Location;
import com.plotsquared.core.permissions.Permission;
import com.plotsquared.core.player.PlotPlayer;
import com.plotsquared.core.plot.Plot;
import com.plotsquared.core.plot.flag.FlagParseException;
import com.plotsquared.core.plot.flag.GlobalFlagContainer;
import com.plotsquared.core.plot.flag.InternalFlag;
import com.plotsquared.core.plot.flag.PlotFlag;
import com.plotsquared.core.plot.flag.types.IntegerFlag;
import com.plotsquared.core.plot.flag.types.ListFlag;
import com.plotsquared.core.util.EventDispatcher;
import com.plotsquared.core.util.MathMan;
import com.plotsquared.core.util.StringComparison;
import com.plotsquared.core.util.StringMan;
import com.plotsquared.core.util.helpmenu.HelpMenu;
import com.plotsquared.core.util.task.RunnableVal2;
import com.plotsquared.core.util.task.RunnableVal3;
import net.kyori.adventure.text.Component;
import net.kyori.adventure.text.TextComponent;
import net.kyori.adventure.text.format.Style;
import net.kyori.adventure.text.minimessage.tag.Tag;
import net.kyori.adventure.text.minimessage.tag.resolver.TagResolver;
import org.checkerframework.checker.nullness.qual.NonNull;
import org.checkerframework.checker.nullness.qual.Nullable;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.stream.Collectors;
import java.util.stream.Stream;

@CommandDeclaration(command = "flag",
        aliases = {"f", "flag"},
        usage = "/plot flag <set | remove | add | list | info> <flag> <value>",
        category = CommandCategory.SETTINGS,
        requiredType = RequiredType.NONE,
        permission = "plots.flag")
@SuppressWarnings("unused")
public final class FlagCommand extends Command {

    private final EventDispatcher eventDispatcher;

    @Inject
    public FlagCommand(final @NonNull EventDispatcher eventDispatcher) {
        super(MainCommand.getInstance(), true);
        this.eventDispatcher = eventDispatcher;
    }

    private static boolean sendMessage(PlotPlayer<?> player) {
        player.sendMessage(
                TranslatableCaption.of("commandconfig.command_syntax"),
                TagResolver.resolver(
                        "value",
                        Tag.inserting(Component.text("/plot flag <set | remove | add | list | info> <flag> <value>"))
                )
        );
        return true;
    }

    private static boolean checkPermValue(
            final @NonNull PlotPlayer<?> player,
            final @NonNull PlotFlag<?, ?> flag, @NonNull String key, @NonNull String value
    ) {
        key = key.toLowerCase();
        value = value.toLowerCase();
        String perm = Permission.PERMISSION_SET_FLAG_KEY_VALUE.format(key.toLowerCase(), value.toLowerCase());
        if (flag instanceof IntegerFlag && MathMan.isInteger(value)) {
            try {
                int numeric = Integer.parseInt(value);
                // Getting full permission without ".<amount>" at the end
                perm = perm.substring(0, perm.length() - value.length() - 1);
                boolean result = false;
                if (numeric >= 0) {
                    int checkRange = PlotSquared.get().getPlatform().equalsIgnoreCase("bukkit") ?
                            numeric :
                            Settings.Limit.MAX_PLOTS;
                    result = player.hasPermissionRange(perm, checkRange) >= numeric;
                }
                if (!result) {
                    player.sendMessage(
                            TranslatableCaption.of("permission.no_permission"),
                            TagResolver.resolver(
                                    "node",
                                    Tag.inserting(Component.text(perm + "." + numeric))
                            )
                    );
                }
                return result;
            } catch (NumberFormatException ignore) {
            }
        } else if (flag instanceof final ListFlag<?, ?> listFlag) {
            try {
                PlotFlag<? extends List<?>, ?> parsedFlag = listFlag.parse(value);
                for (final Object entry : parsedFlag.getValue()) {
                    final String permission = Permission.PERMISSION_SET_FLAG_KEY_VALUE.format(
                            key.toLowerCase(),
                            entry.toString().toLowerCase()
                    );
                    final boolean result = player.hasPermission(permission);
                    if (!result) {
                        player.sendMessage(
                                TranslatableCaption.of("permission.no_permission"),
                                TagResolver.resolver("node", Tag.inserting(Component.text(permission)))
                        );
                        return false;
                    }
                }
            } catch (final FlagParseException e) {
                player.sendMessage(
                        TranslatableCaption.of("flag.flag_parse_error"),
                        TagResolver.builder()
                                .tag("flag_name", Tag.inserting(Component.text(flag.getName())))
                                .tag("flag_value", Tag.inserting(Component.text(e.getValue())))
                                .tag("error", Tag.inserting(e.getErrorMessage().toComponent(player)))
                                .build()
                );
                return false;
            } catch (final Exception e) {
                return false;
            }
            return true;
        }
        boolean result;
        String basePerm = Permission.PERMISSION_SET_FLAG_KEY.format(key.toLowerCase());
        if (flag.isValuedPermission()) {
            result = player.hasKeyedPermission(basePerm, value);
        } else {
            result = player.hasPermission(basePerm);
            perm = basePerm;
        }
        if (!result) {
            player.sendMessage(
                    TranslatableCaption.of("permission.no_permission"),
                    TagResolver.resolver("node", Tag.inserting(Component.text(perm)))
            );
        }
        return result;
    }

    /**
     * Checks if the player is allowed to modify the flags at their current location
     *
     * @return {@code true} if the player is allowed to modify the flags at their current location
     */
    private static boolean checkRequirements(final @NonNull PlotPlayer<?> player) {
        final Location location = player.getLocation();
        final Plot plot = location.getPlotAbs();
        if (plot == null) {
            player.sendMessage(TranslatableCaption.of("errors.not_in_plot"));
            return false;
        }
        if (!plot.hasOwner()) {
            player.sendMessage(TranslatableCaption.of("working.plot_not_claimed"));
            return false;
        }
        if (!plot.isOwner(player.getUUID()) && !player.hasPermission(Permission.PERMISSION_SET_FLAG_OTHER)) {
            player.sendMessage(
                    TranslatableCaption.of("permission.no_permission"),
                    TagResolver.resolver("node", Tag.inserting(Permission.PERMISSION_SET_FLAG_OTHER))
            );
            return false;
        }
        return true;
    }

    /**
     * Attempt to extract the plot flag from the command arguments. If the flag cannot
     * be found, a flag suggestion may be sent to the player.
     *
     * @param player Player executing the command
     * @param arg    String to extract flag from
     * @return The flag, if found, else null
     */
    @Nullable
    private static PlotFlag<?, ?> getFlag(
            final @NonNull PlotPlayer<?> player,
            final @NonNull String arg
    ) {
        if (arg.length() > 0) {
            final PlotFlag<?, ?> flag = GlobalFlagContainer.getInstance().getFlagFromString(arg);
            if (flag instanceof InternalFlag || flag == null) {
                boolean suggested = false;
                try {
                    final StringComparison<PlotFlag<?, ?>> stringComparison =
                            new StringComparison<>(
                                    arg,
                                    GlobalFlagContainer.getInstance().getFlagMap().values(),
                                    PlotFlag::getName
                            );
                    final String best = stringComparison.getBestMatch();
                    if (best != null) {
                        player.sendMessage(
                                TranslatableCaption.of("flag.not_valid_flag_suggested"),
                                TagResolver.resolver("value", Tag.inserting(Component.text(best)))
                        );
                        suggested = true;
                    }
                } catch (final Exception ignored) { /* Happens sometimes because of mean code */ }
                if (!suggested) {
                    player.sendMessage(TranslatableCaption.of("flag.not_valid_flag"));
                }
                return null;
            }
            return flag;
        }
        return null;
    }

    @Override
    public CompletableFuture<Boolean> execute(
            PlotPlayer<?> player, String[] args,
            RunnableVal3<Command, Runnable, Runnable> confirm,
            RunnableVal2<Command, CommandResult> whenDone
    ) throws CommandException {
        if (args.length == 0 || !Arrays
                .asList("set", "s", "list", "l", "delete", "remove", "r", "add", "a", "info", "i")
                .contains(args[0].toLowerCase(Locale.ENGLISH))) {
            new HelpMenu(player).setCategory(CommandCategory.SETTINGS)
                    .setCommands(this.getCommands()).generateMaxPages()
                    .generatePage(0, getParent().toString(), player).render();
            return CompletableFuture.completedFuture(true);
        }
        return super.execute(player, args, confirm, whenDone);
    }

    @Override
    public Collection<Command> tab(
            final PlotPlayer<?> player, final String[] args,
            final boolean space
    ) {
        if (args.length == 1) {
            return Stream
                    .of("set", "add", "remove", "delete", "info", "list")
                    .filter(value -> value.startsWith(args[0].toLowerCase(Locale.ENGLISH)))
                    .map(value -> new Command(null, false, value, "", RequiredType.NONE, null) {
                    }).collect(Collectors.toList());
        } else if (Arrays.asList("set", "add", "remove", "delete", "info")
                .contains(args[0].toLowerCase(Locale.ENGLISH)) && args.length == 2) {
            return GlobalFlagContainer.getInstance().getRecognizedPlotFlags().stream()
                    .filter(flag -> !(flag instanceof InternalFlag))
                    .filter(flag -> flag.getName().startsWith(args[1].toLowerCase(Locale.ENGLISH)))
                    .map(flag -> new Command(null, false, flag.getName(), "", RequiredType.NONE, null) {
                    }).collect(Collectors.toList());
        } else if (Arrays.asList("set", "add", "remove", "delete")
                .contains(args[0].toLowerCase(Locale.ENGLISH)) && args.length == 3) {
            try {
                final PlotFlag<?, ?> flag =
                        GlobalFlagContainer.getInstance().getFlagFromString(args[1]);
                if (flag != null) {
                    Stream<String> stream = flag.getTabCompletions().stream();
                    if (flag instanceof ListFlag && args[2].contains(",")) {
                        final String[] split = args[2].split(",");
                        // Prefix earlier values onto all suggestions
                        StringBuilder prefix = new StringBuilder();
                        for (int i = 0; i < split.length - 1; i++) {
                            prefix.append(split[i]).append(",");
                        }
                        final String cmp;
                        if (!args[2].endsWith(",")) {
                            cmp = split[split.length - 1];
                        } else {
                            prefix.append(split[split.length - 1]).append(",");
                            cmp = "";
                        }
                        return stream
                                .filter(value -> value.startsWith(cmp.toLowerCase(Locale.ENGLISH))).map(
                                        value -> new Command(null, false, prefix + value, "",
                                                RequiredType.NONE, null
                                        ) {
                                        }).collect(Collectors.toList());
                    } else {
                        return stream
                                .filter(value -> value.startsWith(args[2].toLowerCase(Locale.ENGLISH)))
                                .map(value -> new Command(null, false, value, "", RequiredType.NONE,
                                        null
                                ) {
                                }).collect(Collectors.toList());
                    }
                }
            } catch (final Exception ignored) {
            }
        }
        return tabOf(player, args, space);
    }

    @CommandDeclaration(command = "set",
            aliases = {"s", "set"},
            usage = "/plot flag set <flag> <value>",
            category = CommandCategory.SETTINGS,
            requiredType = RequiredType.NONE,
            permission = "plots.set.flag")
    public void set(
            final Command command, final PlotPlayer<?> player, final String[] args,
            final RunnableVal3<Command, Runnable, Runnable> confirm,
            final RunnableVal2<Command, CommandResult> whenDone
    ) {
        if (!checkRequirements(player)) {
            return;
        }
        if (args.length < 2) {
            player.sendMessage(
                    TranslatableCaption.of("commandconfig.command_syntax"),
                    TagResolver.resolver("value", Tag.inserting(Component.text("/plot flag set <flag> <value>")))
            );
            return;
        }
        final PlotFlag<?, ?> plotFlag = getFlag(player, args[0]);
        if (plotFlag == null) {
            return;
        }
        Plot plot = player.getLocation().getPlotAbs();
        PlotFlagAddEvent event = eventDispatcher.callFlagAdd(plotFlag, plot);
        if (event.getEventResult() == Result.DENY) {
            player.sendMessage(
                    TranslatableCaption.of("events.event_denied"),
                    TagResolver.resolver("value", Tag.inserting(Component.text("Flag set")))
            );
            return;
        }
        boolean force = event.getEventResult() == Result.FORCE;
        String value = StringMan.join(Arrays.copyOfRange(args, 1, args.length), " ");
        if (!force && !checkPermValue(player, plotFlag, args[0], value)) {
            return;
        }
        value = CaptionUtility.stripClickEvents(plotFlag, value);
        final PlotFlag<?, ?> parsed;
        try {
            parsed = plotFlag.parse(value);
        } catch (final FlagParseException e) {
            player.sendMessage(
                    TranslatableCaption.of("flag.flag_parse_error"),
                    TagResolver.builder()
                            .tag("flag_name", Tag.inserting(Component.text(plotFlag.getName())))
                            .tag("flag_value", Tag.inserting(Component.text(e.getValue())))
                            .tag("error", Tag.inserting(e.getErrorMessage().toComponent(player)))
                            .build()
            );
            return;
        }
        plot.setFlag(parsed);
        player.sendMessage(
                TranslatableCaption.of("flag.flag_added"),
                TagResolver.builder()
                        .tag("flag", Tag.inserting(Component.text(args[0])))
                        .tag("value", Tag.inserting(Component.text(parsed.toString())))
                        .build()
        );
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    @CommandDeclaration(command = "add",
            aliases = {"a", "add"},
            usage = "/plot flag add <flag> <value>",
            category = CommandCategory.SETTINGS,
            requiredType = RequiredType.NONE,
            permission = "plots.flag.add")
    public void add(
            final Command command, PlotPlayer<?> player, final String[] args,
            final RunnableVal3<Command, Runnable, Runnable> confirm,
            final RunnableVal2<Command, CommandResult> whenDone
    ) {
        if (!checkRequirements(player)) {
            return;
        }
        if (args.length < 2) {
            player.sendMessage(
                    TranslatableCaption.of("commandconfig.command_syntax"),
                    TagResolver.resolver("value", Tag.inserting(Component.text("/plot flag add <flag> <values>")))
            );
            return;
        }
        final PlotFlag<?, ?> plotFlag = getFlag(player, args[0]);
        if (plotFlag == null) {
            return;
        }
        Plot plot = player.getLocation().getPlotAbs();
        PlotFlagAddEvent event = eventDispatcher.callFlagAdd(plotFlag, plot);
        if (event.getEventResult() == Result.DENY) {
            player.sendMessage(
                    TranslatableCaption.of("events.event_denied"),
                    TagResolver.resolver("value", Tag.inserting(Component.text("Flag add")))
            );
            return;
        }
        boolean force = event.getEventResult() == Result.FORCE;
        final PlotFlag localFlag = player.getLocation().getPlotAbs().getFlagContainer()
                .getFlag(event.getFlag().getClass());
        if (!force) {
            for (String entry : args[1].split(",")) {
                if (!checkPermValue(player, event.getFlag(), args[0], entry)) {
                    return;
                }
            }
        }
        final String value = StringMan.join(Arrays.copyOfRange(args, 1, args.length), " ");
        final PlotFlag parsed;
        try {
            parsed = event.getFlag().parse(value);
        } catch (FlagParseException e) {
            player.sendMessage(
                    TranslatableCaption.of("flag.flag_parse_error"),
                    TagResolver.builder()
                            .tag("flag_name", Tag.inserting(Component.text(plotFlag.getName())))
                            .tag("flag_value", Tag.inserting(Component.text(e.getValue())))
                            .tag("error", Tag.inserting(e.getErrorMessage().toComponent(player)))
                            .build()
            );
            return;
        }
        boolean result =
                player.getLocation().getPlotAbs().setFlag(localFlag.merge(parsed.getValue()));
        if (!result) {
            player.sendMessage(TranslatableCaption.of("flag.flag_not_added"));
            return;
        }
        player.sendMessage(
                TranslatableCaption.of("flag.flag_added"),
                TagResolver.builder()
                        .tag("flag", Tag.inserting(Component.text(args[0])))
                        .tag("value", Tag.inserting(Component.text(parsed.toString())))
                        .build()
        );
    }

    @SuppressWarnings({"unchecked", "rawtypes"})
    @CommandDeclaration(command = "remove",
            aliases = {"r", "remove", "delete"},
            usage = "/plot flag remove <flag> [values]",
            category = CommandCategory.SETTINGS,
            requiredType = RequiredType.NONE,
            permission = "plots.flag.remove")
    public void remove(
            final Command command, PlotPlayer<?> player, final String[] args,
            final RunnableVal3<Command, Runnable, Runnable> confirm,
            final RunnableVal2<Command, CommandResult> whenDone
    ) {
        if (!checkRequirements(player)) {
            return;
        }
        if (args.length != 1 && args.length != 2) {
            player.sendMessage(
                    TranslatableCaption.of("commandconfig.command_syntax"),
                    TagResolver.resolver("value", Tag.inserting(Component.text("/plot flag remove <flag> [values]")))
            );
            return;
        }
        PlotFlag<?, ?> flag = getFlag(player, args[0]);
        if (flag == null) {
            return;
        }
        final Plot plot = player.getLocation().getPlotAbs();
        final PlotFlag<?, ?> flagWithOldValue = plot.getFlagContainer().getFlag(flag.getClass());
        PlotFlagRemoveEvent event = eventDispatcher.callFlagRemove(flag, plot);
        if (event.getEventResult() == Result.DENY) {
            player.sendMessage(
                    TranslatableCaption.of("events.event_denied"),
                    TagResolver.resolver("value", Tag.inserting(Component.text("Flag remove")))
            );
            return;
        }
        boolean force = event.getEventResult() == Result.FORCE;
        flag = event.getFlag();
        if (!force && !player.hasPermission(Permission.PERMISSION_SET_FLAG_KEY.format(args[0].toLowerCase()))) {
            if (args.length != 2) {
                player.sendMessage(
                        TranslatableCaption.of("permission.no_permission"),
                        TagResolver.resolver(
                                "node",
                                Tag.inserting(Component.text(Permission.PERMISSION_SET_FLAG_KEY.format(args[0].toLowerCase())))
                        )
                );
                return;
            }
        }
        if (args.length == 2 && flag instanceof final ListFlag<?, ?> listFlag) {
            String value = StringMan.join(Arrays.copyOfRange(args, 1, args.length), " ");
            final List<?> list =
                    new ArrayList<>(plot.getFlag((Class<? extends ListFlag<?, ?>>) listFlag.getClass()));
            final PlotFlag parsedFlag;
            try {
                parsedFlag = listFlag.parse(value);
            } catch (final FlagParseException e) {
                player.sendMessage(
                        TranslatableCaption.of("flag.flag_parse_error"),
                        TagResolver.builder()
                                .tag("flag_name", Tag.inserting(Component.text(flag.getName())))
                                .tag("flag_value", Tag.inserting(Component.text(e.getValue())))
                                .tag("error", Tag.inserting(e.getErrorMessage().toComponent(player)))
                                .build()
                );
                return;
            }
            if (((List<?>) parsedFlag.getValue()).isEmpty()) {
                player.sendMessage(TranslatableCaption.of("flag.flag_not_removed"));
                return;
            }
            if (list.removeAll((List) parsedFlag.getValue())) {
                if (list.isEmpty()) {
                    if (plot.removeFlag(flag)) {
                        player.sendMessage(
                                TranslatableCaption.of("flag.flag_removed"),
                                TagResolver.builder()
                                        .tag("flag", Tag.inserting(Component.text(args[0])))
                                        .tag("value", Tag.inserting(Component.text(flag.toString())))
                                        .build()
                        );
                        return;
                    } else {
                        player.sendMessage(TranslatableCaption.of("flag.flag_not_removed"));
                        return;
                    }
                } else {
                    PlotFlag<?, ?> plotFlag = parsedFlag.createFlagInstance(list);
                    PlotFlagAddEvent addEvent = eventDispatcher.callFlagAdd(plotFlag, plot);
                    if (addEvent.getEventResult() == Result.DENY) {
                        player.sendMessage(
                                TranslatableCaption.of("events.event_denied"),
                                TagResolver.resolver(
                                        "value",
                                        Tag.inserting(Component.text("Re-addition of " + plotFlag.getName()))
                                )
                        );
                        return;
                    }
                    if (plot.setFlag(addEvent.getFlag())) {
                        player.sendMessage(TranslatableCaption.of("flag.flag_partially_removed"));
                        return;
                    } else {
                        player.sendMessage(TranslatableCaption.of("flag.flag_not_removed"));
                        return;
                    }
                }
            } else {
                player.sendMessage(TranslatableCaption.of("flag.flag_not_removed"));
                return;
            }
        } else {
            boolean result = plot.removeFlag(flag);
            if (!result) {
                player.sendMessage(TranslatableCaption.of("flag.flag_not_removed"));
                return;
            }
        }
        player.sendMessage(
                TranslatableCaption.of("flag.flag_removed"),
                TagResolver.builder()
                        .tag("flag", Tag.inserting(Component.text(args[0])))
                        .tag("value", Tag.inserting(Component.text(flag.toString())))
                        .build()
        );
    }

    @CommandDeclaration(command = "list",
            aliases = {"l", "list", "flags"},
            usage = "/plot flag list",
            category = CommandCategory.SETTINGS,
            requiredType = RequiredType.NONE,
            permission = "plots.flag.list")
    public void list(
            final Command command, final PlotPlayer<?> player, final String[] args,
            final RunnableVal3<Command, Runnable, Runnable> confirm,
            final RunnableVal2<Command, CommandResult> whenDone
    ) {
        if (!checkRequirements(player)) {
            return;
        }

        final Map<Component, ArrayList<String>> flags = new HashMap<>();
        for (PlotFlag<?, ?> plotFlag : GlobalFlagContainer.getInstance().getRecognizedPlotFlags()) {
            if (plotFlag instanceof InternalFlag) {
                continue;
            }
            final Component category = plotFlag.getFlagCategory().toComponent(player);
            final Collection<String> flagList = flags.computeIfAbsent(category, k -> new ArrayList<>());
            flagList.add(plotFlag.getName());
        }

        for (final Map.Entry<Component, ArrayList<String>> entry : flags.entrySet()) {
            Collections.sort(entry.getValue());
            Component category =
                    MINI_MESSAGE.deserialize(
                            TranslatableCaption.of("flag.flag_list_categories").getComponent(player),
                            TagResolver.resolver("category", Tag.inserting(entry.getKey().style(Style.empty())))
                    );
            TextComponent.Builder builder = Component.text().append(category);
            final Iterator<String> flagIterator = entry.getValue().iterator();
            while (flagIterator.hasNext()) {
                final String flag = flagIterator.next();
                builder.append(MINI_MESSAGE
                        .deserialize(
                                TranslatableCaption.of("flag.flag_list_flag").getComponent(player),
                                TagResolver.builder()
                                        .tag("command", Tag.preProcessParsed("/plot flag info " + flag))
                                        .tag("flag", Tag.inserting(Component.text(flag)))
                                        .tag("suffix", Tag.inserting(Component.text(flagIterator.hasNext() ? ", " : "")))
                                        .build()
                        ));
            }
            player.sendMessage(StaticCaption.of(MINI_MESSAGE.serialize(builder.build())));
        }
    }

    @CommandDeclaration(command = "info",
            aliases = {"i", "info"},
            usage = "/plot flag info <flag>",
            category = CommandCategory.SETTINGS,
            requiredType = RequiredType.NONE,
            permission = "plots.flag.info")
    public void info(
            final Command command, final PlotPlayer<?> player, final String[] args,
            final RunnableVal3<Command, Runnable, Runnable> confirm,
            final RunnableVal2<Command, CommandResult> whenDone
    ) {
        if (!checkRequirements(player)) {
            return;
        }
        if (args.length < 1) {
            player.sendMessage(
                    TranslatableCaption.of("commandconfig.command_syntax"),
                    TagResolver.resolver("value", Tag.inserting(Component.text("/plot flag info <flag>")))
            );
            return;
        }
        final PlotFlag<?, ?> plotFlag = getFlag(player, args[0]);
        if (plotFlag != null) {
            player.sendMessage(TranslatableCaption.of("flag.flag_info_header"));
            // Flag name
            player.sendMessage(
                    TranslatableCaption.of("flag.flag_info_name"),
                    TagResolver.resolver("flag", Tag.inserting(Component.text(plotFlag.getName())))
            );
            // Flag category
            player.sendMessage(
                    TranslatableCaption.of("flag.flag_info_category"),
                    TagResolver.resolver(
                            "value",
                            Tag.inserting(plotFlag.getFlagCategory().toComponent(player))
                    )
            );
            // Flag description
            // TODO maybe merge and \n instead?
            player.sendMessage(TranslatableCaption.of("flag.flag_info_description"));
            player.sendMessage(plotFlag.getFlagDescription());
            // Flag example
            player.sendMessage(
                    TranslatableCaption.of("flag.flag_info_example"),
                    TagResolver.builder()
                            .tag("command", Tag.preProcessParsed("/plot flag set"))
                            .tag("flag", Tag.preProcessParsed(plotFlag.getName()))
                            .tag("value", Tag.preProcessParsed(plotFlag.getExample()))
                            .build()
            );
            // Default value
            final String defaultValue = player.getLocation().getPlotArea().getFlagContainer()
                    .getFlagErased(plotFlag.getClass()).toString();
            player.sendMessage(
                    TranslatableCaption.of("flag.flag_info_default_value"),
                    TagResolver.resolver("value", Tag.inserting(Component.text(defaultValue)))
            );
            // Footer. Done this way to prevent the duplicate-message-thingy from catching it
            player.sendMessage(TranslatableCaption.of("flag.flag_info_footer"));
        }
    }

}