Code/net/minecraft/util/datafix/fixes/BlockPosFormatAndRenamesFix.java

package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.OpticFinder;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.Typed;
import com.mojang.datafixers.DSL.TypeReference;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.datafixers.types.Type;
import com.mojang.serialization.Dynamic;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import net.minecraft.util.datafix.ExtraDataFixUtils;

public class BlockPosFormatAndRenamesFix extends DataFix {
    private static final List<String> PATROLLING_MOBS = List.of(
        "minecraft:witch", "minecraft:ravager", "minecraft:pillager", "minecraft:illusioner", "minecraft:evoker", "minecraft:vindicator"
    );

    public BlockPosFormatAndRenamesFix(Schema p_334085_) {
        super(p_334085_, true);
    }

    private Typed<?> fixFields(Typed<?> p_329260_, Map<String, String> p_332392_) {
        return p_329260_.update(DSL.remainderFinder(), p_333105_ -> {
            for (Entry<String, String> entry : p_332392_.entrySet()) {
                p_333105_ = p_333105_.renameAndFixField(entry.getKey(), entry.getValue(), ExtraDataFixUtils::fixBlockPos);
            }

            return p_333105_;
        });
    }

    private <T> Dynamic<T> fixMapSavedData(Dynamic<T> p_328964_) {
        return p_328964_.update("frames", p_334922_ -> p_334922_.createList(p_334922_.asStream().map(p_334081_ -> {
            p_334081_ = p_334081_.renameAndFixField("Pos", "pos", ExtraDataFixUtils::fixBlockPos);
            p_334081_ = p_334081_.renameField("Rotation", "rotation");
            return p_334081_.renameField("EntityId", "entity_id");
        }))).update("banners", p_332873_ -> p_332873_.createList(p_332873_.asStream().map(p_333148_ -> {
            p_333148_ = p_333148_.renameField("Pos", "pos");
            p_333148_ = p_333148_.renameField("Color", "color");
            return p_333148_.renameField("Name", "name");
        })));
    }

    @Override
    public TypeRewriteRule makeRule() {
        List<TypeRewriteRule> list = new ArrayList<>();
        this.addEntityRules(list);
        this.addBlockEntityRules(list);
        list.add(
            this.writeFixAndRead(
                "BlockPos format for map frames",
                this.getInputSchema().getType(References.SAVED_DATA_MAP_DATA),
                this.getOutputSchema().getType(References.SAVED_DATA_MAP_DATA),
                p_335523_ -> p_335523_.update("data", this::fixMapSavedData)
            )
        );
        Type<?> type = this.getInputSchema().getType(References.ITEM_STACK);
        list.add(
            this.fixTypeEverywhereTyped(
                "BlockPos format for compass target",
                type,
                ItemStackTagFix.createFixer(
                    type,
                    "minecraft:compass"::equals,
                    p_390227_ -> p_390227_.update(DSL.remainderFinder(), p_330014_ -> p_330014_.update("LodestonePos", ExtraDataFixUtils::fixBlockPos))
                )
            )
        );
        return TypeRewriteRule.seq(list);
    }

    private void addEntityRules(List<TypeRewriteRule> p_328667_) {
        p_328667_.add(this.createEntityFixer(References.ENTITY, "minecraft:bee", Map.of("HivePos", "hive_pos", "FlowerPos", "flower_pos")));
        p_328667_.add(this.createEntityFixer(References.ENTITY, "minecraft:end_crystal", Map.of("BeamTarget", "beam_target")));
        p_328667_.add(this.createEntityFixer(References.ENTITY, "minecraft:wandering_trader", Map.of("WanderTarget", "wander_target")));

        for (String s : PATROLLING_MOBS) {
            p_328667_.add(this.createEntityFixer(References.ENTITY, s, Map.of("PatrolTarget", "patrol_target")));
        }

        p_328667_.add(
            this.fixTypeEverywhereTyped(
                "BlockPos format in Leash for mobs",
                this.getInputSchema().getType(References.ENTITY),
                p_332531_ -> p_332531_.update(DSL.remainderFinder(), p_333406_ -> p_333406_.renameAndFixField("Leash", "leash", ExtraDataFixUtils::fixBlockPos))
            )
        );
    }

    private void addBlockEntityRules(List<TypeRewriteRule> p_331262_) {
        p_331262_.add(this.createEntityFixer(References.BLOCK_ENTITY, "minecraft:beehive", Map.of("FlowerPos", "flower_pos")));
        p_331262_.add(this.createEntityFixer(References.BLOCK_ENTITY, "minecraft:end_gateway", Map.of("ExitPortal", "exit_portal")));
    }

    private TypeRewriteRule createEntityFixer(TypeReference p_328651_, String p_335363_, Map<String, String> p_335843_) {
        String s = "BlockPos format in " + p_335843_.keySet() + " for " + p_335363_ + " (" + p_328651_.typeName() + ")";
        OpticFinder<?> opticfinder = DSL.namedChoice(p_335363_, this.getInputSchema().getChoiceType(p_328651_, p_335363_));
        return this.fixTypeEverywhereTyped(
            s, this.getInputSchema().getType(p_328651_), p_329758_ -> p_329758_.updateTyped(opticfinder, p_336142_ -> this.fixFields(p_336142_, p_335843_))
        );
    }
}