package cn.cetc54.platform.core.config.cache;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.Cache;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.interceptor.CacheErrorHandler;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.Duration;

/**
 * @author Exrick
 */
@Slf4j
@Configuration
public class RedisCacheConfig extends CachingConfigurerSupport {

    @Value("${platform.cache.unit:day}")
    private String unit;

    @Value("${platform.cache.time:-1}")
    private Integer time;

    /**
     * 自定义序列化方式
     * @param factory
     * @return
     */
    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {

        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);

        // 解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.activateDefaultTyping(new ObjectMapper().getPolymorphicTypeValidator(), ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        // 配置序列化（解决乱码的问题）
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();

        if(time<0){
            time = -1;
        }
        Duration expireTime;
        if("hour".equals(unit)){
            expireTime = Duration.ofHours(time);
        }else if("minute".equals(unit)){
            expireTime = Duration.ofMinutes(time);
        }else{
            expireTime = Duration.ofDays(time);
        }
        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config.entryTtl(expireTime))
                .build();
        return cacheManager;
    }

    /**
     * 异常处理 当Redis缓存相关操作发生异常时 打印日志 程序正常走
     * @return
     */
    @Override
    public CacheErrorHandler errorHandler(){

        CacheErrorHandler cacheErrorHandler = new CacheErrorHandler() {
            @Override
            public void handleCacheGetError(RuntimeException e, Cache cache, Object key) {
                log.warn("Redis occur handleCacheGetError：key: [{}]", key);
            }
            @Override
            public void handleCachePutError(RuntimeException e, Cache cache, Object key, Object value) {
                log.warn("Redis occur handleCachePutError：key: [{}]；value: [{}]", key, value);
            }
            @Override
            public void handleCacheEvictError(RuntimeException e, Cache cache, Object key) {
                log.warn("Redis occur handleCacheEvictError：key: [{}]", key);
            }
            @Override
            public void handleCacheClearError(RuntimeException e, Cache cache) {
                log.warn("Redis occur handleCacheClearError");
            }
        };
        return cacheErrorHandler;
    }
}