package cn.datax.common.redis.config;

import cn.datax.common.redis.service.RedisService;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonTypeInfo;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Bean;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.*;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@ConditionalOnClass(RedisOperations.class)
public class RedisConfig {

    /**
     * 自定义redis序列化的机制,重新定义一个ObjectMapper.防止和MVC的冲突
     *
     * @return
     */
    @Bean
    public RedisSerializer<Object> redisSerializer() {
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        //反序列化时候遇到不匹配的属性并不抛出异常
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        //序列化时候遇到空对象不抛出异常
        objectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
        //反序列化的时候如果是无效子类型,不抛出异常
        objectMapper.configure(DeserializationFeature.FAIL_ON_INVALID_SUBTYPE, false);
        //不使用默认的dateTime进行序列化,
        objectMapper.configure(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS, false);
        //使用JSR310提供的序列化类,里面包含了大量的JDK8时间序列化类
        objectMapper.registerModule(new JavaTimeModule());
        //启用反序列化所需的类型信息,在属性中添加@class
        objectMapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY);
        //配置null值的序列化器
        GenericJackson2JsonRedisSerializer.registerNullValueSerializer(objectMapper, null);
        return new GenericJackson2JsonRedisSerializer(objectMapper);
    }

    /**
     * 实例化 RedisTemplate 对象
     *
     * @return
     */
    @Bean(name = "redisTemplate")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory, RedisSerializer<Object> redisSerializer) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        redisTemplate.setDefaultSerializer(redisSerializer);
        redisTemplate.setValueSerializer(redisSerializer);
        redisTemplate.setHashValueSerializer(redisSerializer);
        redisTemplate.setKeySerializer(StringRedisSerializer.UTF_8);
        redisTemplate.setHashKeySerializer(StringRedisSerializer.UTF_8);
        redisTemplate.afterPropertiesSet();
        return redisTemplate;
    }

    @Bean
    @ConditionalOnBean(name = "redisTemplate")
    public RedisService redisService() {
        return new RedisService();
    }
}