package com.sinata.push.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.TimeUnit;


/**
 * Redis工具类
 */
@Component
public class RedisUtil {
    
    @Autowired
    private RedisTemplate redisTemplate;
    
    
    
    /**
     * 向redis中存储字符串没有过期时间
     * @param key
     * @param value
     */
    public void setStrValue(String key, String value){
        if(!StringUtils.isEmpty(key) && !StringUtils.isEmpty(value)){
            redisTemplate.opsForValue().set(key, value);
        }
    }
    
    
    /**
     * 以分钟为单位设置存储值（设置过期时间）
     * @param key
     * @param value
     * @param time 秒
     */
    public void setStrValue(String key, String value, int time){
        if(!StringUtils.isEmpty(key) && !StringUtils.isEmpty(value)){
            redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
        }
    }
    
    
    /**
     * 从redis中获取值
     * @param key
     * @return
     */
    public String getValue(String key){
        if(!StringUtils.isEmpty(key)){
            String data = (String) redisTemplate.opsForValue().get(key);
            return data;
        }
        return null;
    }
    
    
    
    
    /**
     * 删除key
     * @param key
     */
    public void remove(String key){
        if(!StringUtils.isEmpty(key)){
            redisTemplate.delete(key);
        }
    }
    
    
    
    
    
    
    
    /**
     * redis加锁
     * @param key
     * @param value
     * @param time
     * @return
     */
    public boolean lock(String key, String value, int time){
        if(!StringUtils.isEmpty(key)){
            key += "_lock";
            return redisTemplate.opsForValue().setIfAbsent(key, value);
        }
        return false;
    }
    
    /**
     * 获取redis锁
     * @param time
     * @return
     */
    public boolean lock(int time){
        String uuid = UUID.randomUUID().toString();
        return lock("redis", uuid, time);
    }
    
    
    public boolean lock(String key, int time){
        String uuid = UUID.randomUUID().toString();
        return lock(key, uuid, time);
    }
    
    
    /**
     * redis释放锁
     * @param key
     * @return
     */
    public boolean unlock(String key){
        if(!StringUtils.isEmpty(key)){
            key += "_lock";
            return redisTemplate.delete(key);
        }
        return false;
    }
    
    /**
     * 删除锁
     * @return
     */
    public boolean unlock(){
        return unlock("redis");
    }
}