package com.jevon.utils;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

import javax.annotation.PostConstruct;

/**
 * @author chen
 * @version 1.0
 * @date 2019/11/5 0005 8:51
 */
@Component
@PropertySource(value = "classpath:conf.properties")
public class RedisUtils {


    @Value("${redis.host}")
    private String host;
    @Value("${redis.port}")
    private int port;
    @Value("${redis.password}")
    private String password;

    @PostConstruct
    public void getApiToken() {
        ADDR = this.host ;
        PORT = this.port ;
        AUTH = this.password ;
    }

    //Redis服务器IP
    private static String ADDR;

    //Redis的端口号
    private static int PORT;

    //访问密码
    private static String AUTH;

    //可用连接实例的最大数目，默认值为8；
    //如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。
    private static int MAX_ACTIVE = 1024;

    //控制一个pool最多有多少个状态为idle(空闲的)的jedis实例，默认值也是8。
    private static int MAX_IDLE = 200;

    //等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出JedisConnectionException；
    private static int MAX_WAIT = 10000;

    private static int TIMEOUT = 10000;

    //在borrow一个jedis实例时，是否提前进行validate操作；如果为true，则得到的jedis实例均是可用的；
    private static boolean TEST_ON_BORROW = true;

    private static JedisPool jedisPool = null;


    /**
     * 获取Jedis实例
     * @return
     */
    public synchronized static Jedis getJedis() {

        try {
            if (jedisPool != null) {
                Jedis resource = jedisPool.getResource();
                return resource;
            } else {
                JedisPoolConfig config = new JedisPoolConfig();
                config.setMaxTotal(MAX_ACTIVE);
                config.setMaxIdle(MAX_IDLE);
                config.setMaxWaitMillis(MAX_WAIT);
                config.setTestOnBorrow(TEST_ON_BORROW);
                jedisPool = new JedisPool(config, ADDR, PORT, TIMEOUT, AUTH);
                Jedis resource = jedisPool.getResource();
                return resource;
            }
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) {
        RedisUtils.setString("test","test");
    }
    /**
     * 释放jedis资源
     * @param jedis
     */
    public static void returnResource(final Jedis jedis) {
        if (jedis != null) {
            jedisPool.returnResource(jedis);
        }
    }

    public static void setString(String key ,String value){
        Jedis jedis = null;
        try {
            jedis = getJedis();
            jedis.set(key,value);
        } catch (Exception e) {
            System.out.println("setString设置redis键值异常:key=" + key + " value=" + value + " cause:" + e.getMessage());
        } finally {
            if(jedis != null)
            {
                jedis.close();
            }
        }
    }

    public static void setObject(String key,Object object) {
        Jedis jedis = null;
        try {
            jedis = getJedis();
            jedis.set(key.getBytes(), SerializeUtil.serialize(object));
        } catch (Exception e) {
            e.printStackTrace();
            System.out.println("setString设置redis键值异常:key=" + key + " value=" + object + " cause:" + e.getMessage());
        } finally {
            if(jedis != null)
            {
                jedis.close();
            }
        }
    }

    public static void setString(String key ,String value , int expireTime){
        String result = "OK";
        Jedis jedis = null;
        try {
            jedis = getJedis();
            jedis.set(key,value);
            if(result.equals("OK")) {
                jedis.expire(key.getBytes(), expireTime);
            }
        } catch (Exception e) {
            System.out.println("setString设置redis键值异常:key=" + key + " value=" + value + " cause:" + e.getMessage());
        } finally {
            if(jedis != null)
            {
                jedis.close();
            }
        }
    }

    public static String getString(String key) {
        Jedis jedis = null;
        try {
            jedis = getJedis();
            String value = jedis.get(key);
            return value;
        } catch (Exception e) {
            System.out.println("getString获取redis键值异常:key=" + key + " cause:" + e.getMessage());
        } finally {
            jedis.close();
        }
        return null;
    }

    public static Object getObject(String key) {
        Jedis jedis = null;
        try {
            jedis = getJedis();
            byte[] value = jedis.get(key.getBytes());
            return SerializeUtil. unserialize(value);
        } catch (Exception e) {
            System.out.println("getString获取redis键值异常:key=" + key + " cause:" + e.getMessage());
        } finally {
            jedis.close();
        }
        return null;
    }


    /**
     * 删除key
     */
    public static Long delkeyObject(String key) {
        Jedis jedis = null;
        try {
            jedis = getJedis();
            return jedis.del(key.getBytes());
        }catch(Exception e) {
            e.printStackTrace();
            return null;
        }finally{
            if(jedis != null)
            {
                jedis.close();
            }
        }
    }

    public static Boolean existsObject(String key) {
        Jedis jedis = null;
        try {
            jedis = getJedis();
            return jedis.exists(key);
        }catch(Exception e) {
            e.printStackTrace();
            return false;
        }finally{
            if(jedis != null)
            {
                jedis.close();
            }
        }
    }

    public static void flushAll() {
        Jedis jedis = null;
        try {
            jedis = getJedis();
            jedis.flushAll();
        } catch (Exception e) {
            System.out.println("Cache清空失败：" + e);
        }
    }
}