package com.bizzan.bitrade.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @author
 * @date 2020年12月29日
 */
@Configuration
@EnableCaching
public class RedisCacheConfig extends CachingConfigurerSupport {

    /**
     * 缓存管理器.
     *
     * @param redisTemplate
     * @return
     */
    @Bean
    public CacheManager cacheManager(RedisTemplate<?, ?> redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        // 设置缓存默认过期时间30分钟（全局的）
        cacheManager.setDefaultExpiration(1800);
        return cacheManager;
    }

    /**
     * RedisTemplate配置
     * @param factory
     * @return
     */
    @Bean
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(factory);
        //定义key序列化方式
        //RedisSerializer<String> redisSerializer = new StringRedisSerializer();//Long类型会出现异常信息;需要我们上面的自定义key生成策略，一般没必要
        //定义value的序列化方式
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);

        // template.setKeySerializer(redisSerializer);
        template.setValueSerializer(jackson2JsonRedisSerializer);
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

    /**
     * 用于读取 Spring Session 在 Redis 中的数据（JDK 序列化格式）
     * Key: spring:session:admin:session:sessions:{sessionId}
     * Field: sessionAttr:CAPTCHA_ADMIN_LOGIN
     */
    @Bean("springSessionRedisTemplate")
    public RedisTemplate<String, Object> springSessionRedisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(factory);
        template.setKeySerializer(new StringRedisSerializer());
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(new JdkSerializationRedisSerializer());
        template.afterPropertiesSet();
        return template;
    }

    /**
     * 纯字符串 Redis 模板，用于 Admin Session 等 JSON 存储
     */
    @Bean
    public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(factory);
        template.setKeySerializer(new StringRedisSerializer());
        template.setValueSerializer(new StringRedisSerializer());
        template.afterPropertiesSet();
        return template;
    }

}
