package net.minecraft.util.datafix.fixes;

import com.google.common.collect.ImmutableMap;
import com.mojang.datafixers.DSL;
import com.mojang.datafixers.DataFixUtils;
import com.mojang.datafixers.Typed;
import com.mojang.datafixers.schemas.Schema;
import com.mojang.serialization.Dynamic;

public class VillagerDataFix extends NamedEntityFix {
	public VillagerDataFix(final Schema schema, final String entityType) {
		super(schema, false, "Villager profession data fix (" + entityType + ")", References.ENTITY, entityType);
	}

	@Override
	protected Typed<?> fix(final Typed<?> entity) {
		Dynamic<?> remainder = entity.get(DSL.remainderFinder());
		return entity.set(
			DSL.remainderFinder(),
			remainder.remove("Profession")
				.remove("Career")
				.remove("CareerLevel")
				.set(
					"VillagerData",
					remainder.createMap(
						ImmutableMap.of(
							remainder.createString("type"),
							remainder.createString("minecraft:plains"),
							remainder.createString("profession"),
							remainder.createString(upgradeData(remainder.get("Profession").asInt(0), remainder.get("Career").asInt(0))),
							remainder.createString("level"),
							DataFixUtils.orElse(remainder.get("CareerLevel").result(), remainder.createInt(1))
						)
					)
				)
		);
	}

	private static String upgradeData(final int profession, final int career) {
		if (profession == 0) {
			if (career == 2) {
				return "minecraft:fisherman";
			} else if (career == 3) {
				return "minecraft:shepherd";
			} else {
				return career == 4 ? "minecraft:fletcher" : "minecraft:farmer";
			}
		} else if (profession == 1) {
			return career == 2 ? "minecraft:cartographer" : "minecraft:librarian";
		} else if (profession == 2) {
			return "minecraft:cleric";
		} else if (profession == 3) {
			if (career == 2) {
				return "minecraft:weaponsmith";
			} else {
				return career == 3 ? "minecraft:toolsmith" : "minecraft:armorer";
			}
		} else if (profession == 4) {
			return career == 2 ? "minecraft:leatherworker" : "minecraft:butcher";
		} else {
			return profession == 5 ? "minecraft:nitwit" : "minecraft:none";
		}
	}
}