src/game/java/net/minecraft/server/ServerLinks.java

package net.minecraft.server;

import com.mojang.datafixers.util.Either;
import io.netty.buffer.ByteBuf;
import java.net.URI;
import java.util.List;
import java.util.Optional;
import java.util.function.IntFunction;
import net.minecraft.network.chat.Component;
import net.minecraft.network.chat.ComponentSerialization;
import net.minecraft.network.codec.ByteBufCodecs;
import net.minecraft.network.codec.StreamCodec;
import net.minecraft.util.ByIdMap;

public record ServerLinks(List<ServerLinks.Entry> entries) {
    public static final ServerLinks EMPTY = new ServerLinks(List.of());
    public static final StreamCodec<ByteBuf, Either<ServerLinks.KnownLinkType, Component>> TYPE_STREAM_CODEC = ByteBufCodecs.either(
        ServerLinks.KnownLinkType.STREAM_CODEC, ComponentSerialization.TRUSTED_CONTEXT_FREE_STREAM_CODEC
    );
    public static final StreamCodec<ByteBuf, List<ServerLinks.UntrustedEntry>> UNTRUSTED_LINKS_STREAM_CODEC = ServerLinks.UntrustedEntry.STREAM_CODEC
        .apply(ByteBufCodecs.list());

    public boolean isEmpty() {
        return this.entries.isEmpty();
    }

    public Optional<ServerLinks.Entry> findKnownType(ServerLinks.KnownLinkType p_345340_) {
        return this.entries.stream().filter(p_344406_ -> p_344406_.type.map(p_344429_ -> p_344429_ == p_345340_, p_343563_ -> false)).findFirst();
    }

    public List<ServerLinks.UntrustedEntry> untrust() {
        return this.entries.stream().map(p_343119_ -> new ServerLinks.UntrustedEntry(p_343119_.type, p_343119_.link.toString())).toList();
    }

    public static record Entry(Either<ServerLinks.KnownLinkType, Component> type, URI link) {
        public static ServerLinks.Entry knownType(ServerLinks.KnownLinkType p_344933_, URI p_343801_) {
            return new ServerLinks.Entry(Either.left(p_344933_), p_343801_);
        }

        public static ServerLinks.Entry custom(Component p_343423_, URI p_343780_) {
            return new ServerLinks.Entry(Either.right(p_343423_), p_343780_);
        }

        public Component displayName() {
            return this.type.map(ServerLinks.KnownLinkType::displayName, p_342867_ -> (Component)p_342867_);
        }
    }

    public static enum KnownLinkType {
        BUG_REPORT(0, "report_bug"),
        COMMUNITY_GUIDELINES(1, "community_guidelines"),
        SUPPORT(2, "support"),
        STATUS(3, "status"),
        FEEDBACK(4, "feedback"),
        COMMUNITY(5, "community"),
        WEBSITE(6, "website"),
        FORUMS(7, "forums"),
        NEWS(8, "news"),
        ANNOUNCEMENTS(9, "announcements");

        private static final IntFunction<ServerLinks.KnownLinkType> BY_ID = ByIdMap.continuous(
            p_344812_ -> p_344812_.id, values(), ByIdMap.OutOfBoundsStrategy.ZERO
        );
        public static final StreamCodec<ByteBuf, ServerLinks.KnownLinkType> STREAM_CODEC = ByteBufCodecs.idMapper(BY_ID, p_345122_ -> p_345122_.id);
        private final int id;
        private final String name;

        private KnownLinkType(final int p_342655_, final String p_343354_) {
            this.id = p_342655_;
            this.name = p_343354_;
        }

        private Component displayName() {
            return Component.translatable("known_server_link." + this.name);
        }

        public ServerLinks.Entry create(URI p_344425_) {
            return ServerLinks.Entry.knownType(this, p_344425_);
        }
    }

    public static record UntrustedEntry(Either<ServerLinks.KnownLinkType, Component> type, String link) {
        public static final StreamCodec<ByteBuf, ServerLinks.UntrustedEntry> STREAM_CODEC = StreamCodec.composite(
            ServerLinks.TYPE_STREAM_CODEC,
            ServerLinks.UntrustedEntry::type,
            ByteBufCodecs.STRING_UTF8,
            ServerLinks.UntrustedEntry::link,
            ServerLinks.UntrustedEntry::new
        );
    }
}