package net.minecraft.commands.arguments;

import com.google.common.collect.Lists;
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.List;
import java.util.concurrent.CompletableFuture;
import net.minecraft.commands.CommandSourceStack;
import net.minecraft.commands.SharedSuggestionProvider;
import net.minecraft.core.registries.BuiltInRegistries;
import net.minecraft.network.chat.Component;
import net.minecraft.stats.Stat;
import net.minecraft.stats.StatType;
import net.minecraft.world.scores.criteria.ObjectiveCriteria;

public class ObjectiveCriteriaArgument implements ArgumentType<ObjectiveCriteria> {
	private static final Collection<String> EXAMPLES = Arrays.asList("foo", "foo.bar.baz", "minecraft:foo");
	public static final DynamicCommandExceptionType ERROR_INVALID_VALUE = new DynamicCommandExceptionType(
		value -> Component.translatableEscape("argument.criteria.invalid", value)
	);

	private ObjectiveCriteriaArgument() {
	}

	public static ObjectiveCriteriaArgument criteria() {
		return new ObjectiveCriteriaArgument();
	}

	public static ObjectiveCriteria getCriteria(final CommandContext<CommandSourceStack> context, final String name) {
		return context.getArgument(name, ObjectiveCriteria.class);
	}

	public ObjectiveCriteria parse(final StringReader reader) throws CommandSyntaxException {
		int start = reader.getCursor();

		while (reader.canRead() && reader.peek() != ' ') {
			reader.skip();
		}

		String id = reader.getString().substring(start, reader.getCursor());
		return (ObjectiveCriteria)ObjectiveCriteria.byName(id).orElseThrow(() -> {
			reader.setCursor(start);
			return ERROR_INVALID_VALUE.createWithContext(reader, id);
		});
	}

	@Override
	public <S> CompletableFuture<Suggestions> listSuggestions(final CommandContext<S> context, final SuggestionsBuilder builder) {
		List<String> ids = Lists.<String>newArrayList(ObjectiveCriteria.getCustomCriteriaNames());

		for (StatType<?> type : BuiltInRegistries.STAT_TYPE) {
			for (Object value : type.getRegistry()) {
				String name = this.getName(type, value);
				ids.add(name);
			}
		}

		return SharedSuggestionProvider.suggest(ids, builder);
	}

	public <T> String getName(final StatType<T> type, final Object value) {
		return Stat.buildName(type, (T)value);
	}

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