package net.minecraft.server.jsonrpc.internalapi;

import java.util.Objects;
import java.util.stream.Stream;
import net.minecraft.server.MinecraftServer;
import net.minecraft.server.dedicated.DedicatedServer;
import net.minecraft.server.jsonrpc.JsonRpcLogger;
import net.minecraft.server.jsonrpc.methods.ClientInfo;
import net.minecraft.server.jsonrpc.methods.GameRulesService;
import net.minecraft.server.notifications.NotificationManager;
import net.minecraft.world.level.gamerules.GameRule;
import net.minecraft.world.level.gamerules.GameRules;

public class MinecraftGameRuleServiceImpl implements MinecraftGameRuleService {
	private final NotificationManager notificationManager;
	private final JsonRpcLogger jsonrpcLogger;

	public MinecraftGameRuleServiceImpl(final NotificationManager notificationManager, final JsonRpcLogger jsonrpcLogger) {
		this.notificationManager = notificationManager;
		this.jsonrpcLogger = jsonrpcLogger;
	}

	private DedicatedServer server() {
		return (DedicatedServer)Objects.requireNonNull(this.notificationManager.server());
	}

	@Override
	public <T> GameRulesService.GameRuleUpdate<T> updateGameRule(final GameRulesService.GameRuleUpdate<T> update, final ClientInfo clientInfo) {
		GameRule<T> gameRule = update.gameRule();
		MinecraftServer server = this.server();
		GameRules gameRules = server.getGameRules();
		T oldValue = gameRules.get(gameRule);
		T newValue = update.value();
		gameRules.set(gameRule, newValue, server);
		this.jsonrpcLogger.log(clientInfo, "Game rule '{}' updated from '{}' to '{}'", gameRule.id(), gameRule.serialize(oldValue), gameRule.serialize(newValue));
		return update;
	}

	@Override
	public <T> GameRulesService.GameRuleUpdate<T> getTypedRule(final GameRule<T> gameRule, final T value) {
		return new GameRulesService.GameRuleUpdate<>(gameRule, value);
	}

	@Override
	public Stream<GameRule<?>> getAvailableGameRules() {
		return this.server().getGameRules().availableRules();
	}

	@Override
	public <T> T getRuleValue(final GameRule<T> gameRule) {
		return this.server().getGameRules().get(gameRule);
	}
}