package com.zhgd.redis.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.zhgd.redis.lock.RedisRepository;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
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.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.Duration;

/**
 * @program: wisdomSite
 * @description: redis配置
 * @author: Mr.Peng
 * @create: 2021-07-26 17:38
 **/
//@EnableConfigurationProperties({RedisProperties.class})
@Configuration
@EnableCaching
public class RedisConfig  {

    /**
     * 定义缓存
     * @param redisTemplate
     * @return
     */
    @Bean
    public RedisCacheManager redisCacheManager(RedisTemplate redisTemplate) {
        // 初始化一个RedisCacheWriter
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisTemplate.getConnectionFactory());
        // 设置默认过期时间30M
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
                .computePrefixWith(cacheName -> "cache".concat(":").concat(cacheName).concat(":"))
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
                //.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new RedisObjectSerializer()));
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(redisTemplate.getValueSerializer()))
                //.entryTtl(Duration.ofMinutes(30L))
                .entryTtl(Duration.ofHours(1))
                .disableCachingNullValues();
        // 初始化RedisCacheManager
        RedisCacheManager redisCacheManager = new RedisCacheManager(redisCacheWriter, redisCacheConfiguration);
        return redisCacheManager;
    }


    /**
     * retemplate相关配置
     * springboot2.x 之后默认使用lettuce客户端连接（线程安全）
     *
     * @param factory
     * @return
     */
    @Bean(name = "redisTemplate")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {

        RedisTemplate<String, Object> template = new RedisTemplate<>();
        // 配置连接工厂
        template.setConnectionFactory(factory);
        //使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值（默认使用JDK的序列化方式）

        Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        // 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        // 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jacksonSeial.setObjectMapper(om);
//        GenericJackson2JsonRedisSerializer serializer = new GenericJackson2JsonRedisSerializer(om);

        //使用StringRedisSerializer来序列化和反序列化redis的key值
        template.setKeySerializer(new StringRedisSerializer());
        // 值采用json序列化
        template.setValueSerializer(jacksonSeial);
        // 设置hash key 和value序列化模式
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(jacksonSeial);
        template.afterPropertiesSet();
        return template;
    }

    /**
     * Redis repository redis repository.
     *
     * @param redisTemplate the redis template
     * @return the redis repository
     */
    @Bean
    @ConditionalOnMissingBean
    public RedisRepository redisRepository(RedisTemplate<String, Object> redisTemplate) {
        return new RedisRepository(redisTemplate);
    }

    @Bean
    public KeyGenerator keyGenerator() {
        return (target, method, objects) -> {
            StringBuilder sb = new StringBuilder();
            sb.append(target.getClass().getName());
            sb.append(":" + method.getName() + ":");
            for (Object obj : objects) {
                sb.append(obj.toString());
            }
            return sb.toString();
        };
    }
}
