@Configuration
@EnableCaching
public class CacheConfig {

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        // 使用 RedisCacheManager 作为默认的缓存管理器
        return RedisCacheManager
                .builder(redisConnectionFactory)
                .cacheDefaults(RedisCacheConfiguration.defaultCacheConfig().entryTtl(Duration.ofHours(24)))
                .build();
    }

    @Bean
    public RedisCacheManager redisCacheManager(RedisConnectionFactory redisConnectionFactory) {
        // 配置默认的缓存配置
        RedisCacheConfiguration defaultCacheConfig = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofHours(24))
                .disableCachingNullValues()
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));

        // 配置缓存名称和具体的缓存配置
        Map<String, RedisCacheConfiguration> cacheConfigurations = new HashMap<>();

        return RedisCacheManager.builder(redisConnectionFactory)
                .cacheDefaults(defaultCacheConfig)
                .initialCacheNames(Collections.singleton("user"))
                .withInitialCacheConfigurations(cacheConfigurations)
                .transactionAware()
                .build();
    }


    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(redisConnectionFactory);

        // 配置 ObjectMapper，用于定制序列化和反序列化行为
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL);
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);

        // 使用 Lettuce 提供的 GenericJackson2JsonRedisSerializer 作为序列化工具
        GenericJackson2JsonRedisSerializer serializer = new GenericJackson2JsonRedisSerializer(objectMapper);

        // 设置序列化和反序列化工具
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(serializer);
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(serializer);
        template.afterPropertiesSet();

        return template;
    }

    @Bean
    public ObjectMapper objectMapper() {
        // 配置 Jackson 的 ObjectMapper，用于序列化和反序列化对象
        ObjectMapper objectMapper = new ObjectMapper();
        SimpleModule module = new SimpleModule();
        // 在序列化/反序列化对象时，忽略未知的属性
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        objectMapper.registerModule(module);
        return objectMapper;
    }
}