src/game/java/net/minecraft/commands/arguments/ObjectiveArgument.java

package net.minecraft.commands.arguments;

import com.mojang.brigadier.StringReader;
import com.mojang.brigadier.arguments.ArgumentType;
import com.mojang.brigadier.context.CommandContext;
import com.mojang.brigadier.exceptions.CommandSyntaxException;
import com.mojang.brigadier.exceptions.DynamicCommandExceptionType;
import com.mojang.brigadier.suggestion.Suggestions;
import com.mojang.brigadier.suggestion.SuggestionsBuilder;
import java.util.Arrays;
import java.util.Collection;
import java.util.concurrent.CompletableFuture;
import net.minecraft.commands.CommandSourceStack;
import net.minecraft.commands.SharedSuggestionProvider;
import net.minecraft.network.chat.Component;
import net.minecraft.world.scores.Objective;
import net.minecraft.world.scores.Scoreboard;

public class ObjectiveArgument implements ArgumentType<String> {
    private static final Collection<String> EXAMPLES = Arrays.asList("foo", "*", "012");
    private static final DynamicCommandExceptionType ERROR_OBJECTIVE_NOT_FOUND = new DynamicCommandExceptionType(
        p_308353_ -> Component.translatableEscape("arguments.objective.notFound", p_308353_)
    );
    private static final DynamicCommandExceptionType ERROR_OBJECTIVE_READ_ONLY = new DynamicCommandExceptionType(
        p_308354_ -> Component.translatableEscape("arguments.objective.readonly", p_308354_)
    );

    public static ObjectiveArgument objective() {
        return new ObjectiveArgument();
    }

    public static Objective getObjective(CommandContext<CommandSourceStack> p_101961_, String p_101962_) throws CommandSyntaxException {
        String s = p_101961_.getArgument(p_101962_, String.class);
        Scoreboard scoreboard = p_101961_.getSource().getServer().getScoreboard();
        Objective objective = scoreboard.getObjective(s);
        if (objective == null) {
            throw ERROR_OBJECTIVE_NOT_FOUND.create(s);
        } else {
            return objective;
        }
    }

    public static Objective getWritableObjective(CommandContext<CommandSourceStack> p_101966_, String p_101967_) throws CommandSyntaxException {
        Objective objective = getObjective(p_101966_, p_101967_);
        if (objective.getCriteria().isReadOnly()) {
            throw ERROR_OBJECTIVE_READ_ONLY.create(objective.getName());
        } else {
            return objective;
        }
    }

    public String parse(StringReader p_101959_) throws CommandSyntaxException {
        return p_101959_.readUnquotedString();
    }

    @Override
    public <S> CompletableFuture<Suggestions> listSuggestions(CommandContext<S> p_101974_, SuggestionsBuilder p_101975_) {
        S s = p_101974_.getSource();
        if (s instanceof CommandSourceStack commandsourcestack) {
            return SharedSuggestionProvider.suggest(commandsourcestack.getServer().getScoreboard().getObjectiveNames(), p_101975_);
        } else {
            return s instanceof SharedSuggestionProvider sharedsuggestionprovider ? sharedsuggestionprovider.customSuggestion(p_101974_) : Suggestions.empty();
        }
    }

    @Override
    public Collection<String> getExamples() {
        return EXAMPLES;
    }
}