minecraft-src/net/minecraft/advancements/Advancement.java

package net.minecraft.advancements;

import com.google.common.collect.ImmutableMap;
import com.mojang.serialization.Codec;
import com.mojang.serialization.DataResult;
import com.mojang.serialization.codecs.RecordCodecBuilder;
import java.util.Map;
import java.util.Optional;
import java.util.function.Consumer;
import net.minecraft.ChatFormatting;
import net.minecraft.advancements.critereon.CriterionValidator;
import net.minecraft.core.HolderGetter;
import net.minecraft.network.FriendlyByteBuf;
import net.minecraft.network.RegistryFriendlyByteBuf;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.ComponentUtils;
import net.minecraft.network.chat.HoverEvent;
import net.minecraft.network.chat.Style;
import net.minecraft.network.codec.ByteBufCodecs;
import net.minecraft.network.codec.StreamCodec;
import net.minecraft.resources.ResourceLocation;
import net.minecraft.util.ProblemReporter;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.level.ItemLike;
import org.jetbrains.annotations.Nullable;

public record Advancement(
	Optional<ResourceLocation> parent,
	Optional<DisplayInfo> display,
	AdvancementRewards rewards,
	Map<String, Criterion<?>> criteria,
	AdvancementRequirements requirements,
	boolean sendsTelemetryEvent,
	Optional<Component> name
) {
	private static final Codec<Map<String, Criterion<?>>> CRITERIA_CODEC = Codec.unboundedMap(Codec.STRING, Criterion.CODEC)
		.validate(map -> map.isEmpty() ? DataResult.error(() -> "Advancement criteria cannot be empty") : DataResult.success(map));
	public static final Codec<Advancement> CODEC = RecordCodecBuilder.<Advancement>create(
			instance -> instance.group(
					ResourceLocation.CODEC.optionalFieldOf("parent").forGetter(Advancement::parent),
					DisplayInfo.CODEC.optionalFieldOf("display").forGetter(Advancement::display),
					AdvancementRewards.CODEC.optionalFieldOf("rewards", AdvancementRewards.EMPTY).forGetter(Advancement::rewards),
					CRITERIA_CODEC.fieldOf("criteria").forGetter(Advancement::criteria),
					AdvancementRequirements.CODEC.optionalFieldOf("requirements").forGetter(advancement -> Optional.of(advancement.requirements())),
					Codec.BOOL.optionalFieldOf("sends_telemetry_event", false).forGetter(Advancement::sendsTelemetryEvent)
				)
				.apply(instance, (optional, optional2, advancementRewards, map, optional3, boolean_) -> {
					AdvancementRequirements advancementRequirements = (AdvancementRequirements)optional3.orElseGet(() -> AdvancementRequirements.allOf(map.keySet()));
					return new Advancement(optional, optional2, advancementRewards, map, advancementRequirements, boolean_);
				})
		)
		.validate(Advancement::validate);
	public static final StreamCodec<RegistryFriendlyByteBuf, Advancement> STREAM_CODEC = StreamCodec.ofMember(Advancement::write, Advancement::read);

	public Advancement(
		Optional<ResourceLocation> parent,
		Optional<DisplayInfo> display,
		AdvancementRewards rewards,
		Map<String, Criterion<?>> criteria,
		AdvancementRequirements requirements,
		boolean sendsTelemetryEvent
	) {
		this(parent, display, rewards, Map.copyOf(criteria), requirements, sendsTelemetryEvent, display.map(Advancement::decorateName));
	}

	private static DataResult<Advancement> validate(Advancement advancement) {
		return advancement.requirements().validate(advancement.criteria().keySet()).map(advancementRequirements -> advancement);
	}

	private static Component decorateName(DisplayInfo display) {
		Component component = display.getTitle();
		ChatFormatting chatFormatting = display.getType().getChatColor();
		Component component2 = ComponentUtils.mergeStyles(component.copy(), Style.EMPTY.withColor(chatFormatting)).append("\n").append(display.getDescription());
		Component component3 = component.copy().withStyle(style -> style.withHoverEvent(new HoverEvent(HoverEvent.Action.SHOW_TEXT, component2)));
		return ComponentUtils.wrapInSquareBrackets(component3).withStyle(chatFormatting);
	}

	public static Component name(AdvancementHolder advancement) {
		return (Component)advancement.value().name().orElseGet(() -> Component.literal(advancement.id().toString()));
	}

	private void write(RegistryFriendlyByteBuf buffer) {
		buffer.writeOptional(this.parent, FriendlyByteBuf::writeResourceLocation);
		DisplayInfo.STREAM_CODEC.apply(ByteBufCodecs::optional).encode(buffer, this.display);
		this.requirements.write(buffer);
		buffer.writeBoolean(this.sendsTelemetryEvent);
	}

	private static Advancement read(RegistryFriendlyByteBuf buffer) {
		return new Advancement(
			buffer.readOptional(FriendlyByteBuf::readResourceLocation),
			(Optional<DisplayInfo>)DisplayInfo.STREAM_CODEC.apply(ByteBufCodecs::optional).decode(buffer),
			AdvancementRewards.EMPTY,
			Map.of(),
			new AdvancementRequirements(buffer),
			buffer.readBoolean()
		);
	}

	public boolean isRoot() {
		return this.parent.isEmpty();
	}

	public void validate(ProblemReporter reporter, HolderGetter.Provider lootData) {
		this.criteria.forEach((string, criterion) -> {
			CriterionValidator criterionValidator = new CriterionValidator(reporter.forChild(string), lootData);
			criterion.triggerInstance().validate(criterionValidator);
		});
	}

	public static class Builder {
		private Optional<ResourceLocation> parent = Optional.empty();
		private Optional<DisplayInfo> display = Optional.empty();
		private AdvancementRewards rewards = AdvancementRewards.EMPTY;
		private final ImmutableMap.Builder<String, Criterion<?>> criteria = ImmutableMap.builder();
		private Optional<AdvancementRequirements> requirements = Optional.empty();
		private AdvancementRequirements.Strategy requirementsStrategy = AdvancementRequirements.Strategy.AND;
		private boolean sendsTelemetryEvent;

		public static Advancement.Builder advancement() {
			return new Advancement.Builder().sendsTelemetryEvent();
		}

		public static Advancement.Builder recipeAdvancement() {
			return new Advancement.Builder();
		}

		public Advancement.Builder parent(AdvancementHolder parent) {
			this.parent = Optional.of(parent.id());
			return this;
		}

		@Deprecated(
			forRemoval = true
		)
		public Advancement.Builder parent(ResourceLocation parentId) {
			this.parent = Optional.of(parentId);
			return this;
		}

		public Advancement.Builder display(
			ItemStack icon,
			Component title,
			Component description,
			@Nullable ResourceLocation background,
			AdvancementType type,
			boolean showToast,
			boolean announceChat,
			boolean hidden
		) {
			return this.display(new DisplayInfo(icon, title, description, Optional.ofNullable(background), type, showToast, announceChat, hidden));
		}

		public Advancement.Builder display(
			ItemLike icon,
			Component title,
			Component description,
			@Nullable ResourceLocation background,
			AdvancementType type,
			boolean showToast,
			boolean announceChat,
			boolean hidden
		) {
			return this.display(
				new DisplayInfo(new ItemStack(icon.asItem()), title, description, Optional.ofNullable(background), type, showToast, announceChat, hidden)
			);
		}

		public Advancement.Builder display(DisplayInfo display) {
			this.display = Optional.of(display);
			return this;
		}

		public Advancement.Builder rewards(AdvancementRewards.Builder rewardsBuilder) {
			return this.rewards(rewardsBuilder.build());
		}

		public Advancement.Builder rewards(AdvancementRewards rewards) {
			this.rewards = rewards;
			return this;
		}

		public Advancement.Builder addCriterion(String key, Criterion<?> criterion) {
			this.criteria.put(key, criterion);
			return this;
		}

		public Advancement.Builder requirements(AdvancementRequirements.Strategy requirementsStrategy) {
			this.requirementsStrategy = requirementsStrategy;
			return this;
		}

		public Advancement.Builder requirements(AdvancementRequirements requirements) {
			this.requirements = Optional.of(requirements);
			return this;
		}

		public Advancement.Builder sendsTelemetryEvent() {
			this.sendsTelemetryEvent = true;
			return this;
		}

		public AdvancementHolder build(ResourceLocation id) {
			Map<String, Criterion<?>> map = this.criteria.buildOrThrow();
			AdvancementRequirements advancementRequirements = (AdvancementRequirements)this.requirements.orElseGet(() -> this.requirementsStrategy.create(map.keySet()));
			return new AdvancementHolder(id, new Advancement(this.parent, this.display, this.rewards, map, advancementRequirements, this.sendsTelemetryEvent));
		}

		public AdvancementHolder save(Consumer<AdvancementHolder> output, String id) {
			AdvancementHolder advancementHolder = this.build(ResourceLocation.parse(id));
			output.accept(advancementHolder);
			return advancementHolder;
		}
	}
}