src/game/java/net/minecraft/util/datafix/fixes/AdvancementsRenameFix.java

package net.minecraft.util.datafix.fixes;

import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFix;
import com.mojang.datafixers.TypeRewriteRule;
import com.mojang.datafixers.Typed;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.datafixers.util.Pair;
import com.mojang.serialization.Dynamic;
import java.util.function.Function;

public class AdvancementsRenameFix extends DataFix {
    private final String name;
    private final Function<String, String> renamer;

    public AdvancementsRenameFix(Schema p_14652_, boolean p_14653_, String p_14654_, Function<String, String> p_14655_) {
        super(p_14652_, p_14653_);
        this.name = p_14654_;
        this.renamer = p_14655_;
    }

    @Override
    protected TypeRewriteRule makeRule() {
        return this.fixTypeEverywhereTyped(
            this.name,
            this.getInputSchema().getType(References.ADVANCEMENTS),
            p_14657_ -> p_14657_.update(DSL.remainderFinder(), p_145063_ -> p_145063_.updateMapValues(p_145066_ -> {
                        String s = p_145066_.getFirst().asString("");
                        return p_145066_.mapFirst(p_145070_ -> p_145063_.createString(this.renamer.apply(s)));
                    }))
        );
    }
}