package com.sandu.ximon.admin.utils;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.google.gson.Gson;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Component;

import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * Redis工具类
 *
 * @author Mark sunlightcs@gmail.com
 */
@Component("RedisUtils")

public class RedisUtils {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
    @Autowired
    private ValueOperations<String, String> valueOperations;

    private HashOperations<String, String, Object> hashOperations;

    private ListOperations<String, Object> listOperations;

    private SetOperations<String, Object> setOperations;

    private ZSetOperations<String, Object> zSetOperations;
    /**  默认过期时长，单位：秒 */
    public final static long DEFAULT_EXPIRE = 60 * 60 * 24;
    /**  不设置过期时长 */
    public final static long NOT_EXPIRE = -1;
    private final static Gson gson = new Gson();

    /**
     *
     * @param key
     * @param value
     * @param expire    秒数
     * @return
     */
    public boolean set(String key, Object value, long expire){
        valueOperations.set(key, toJson(value));
        if(expire != NOT_EXPIRE){
            return redisTemplate.expire(key, expire, TimeUnit.SECONDS);
        }
        return false;
    }

    public static RedisUtils getBean(){
        return (RedisUtils)SpringContextUtils.getBean("RedisUtils");
    }

    public boolean set(String key, Object value){
        return set(key, value, DEFAULT_EXPIRE);
    }

    public <T> T get(String key, Class<T> clazz, long expire) {
        String value = valueOperations.get(key);
        if(expire != NOT_EXPIRE){
            redisTemplate.expire(key, expire, TimeUnit.SECONDS);
        }
        return value == null ? null : fromJson(value, clazz);
    }

    public <T> T get(String key, Class<T> clazz) {
        return get(key, clazz, NOT_EXPIRE);
    }

    public String get(String key, long expire) {
        String value = valueOperations.get(key);
        if(expire != NOT_EXPIRE){
            redisTemplate.expire(key, expire, TimeUnit.SECONDS);
        }
        return value;
    }

    public String get(String key) {
        return get(key, NOT_EXPIRE);
    }

    public boolean delete(String key) {
        return redisTemplate.delete(key);
    }


    public Set<String> allKeys(){
        return redisTemplate.keys("*");
    }

    public Set<String> keys(String str) {
        return redisTemplate.keys(str);
    }

    /**
     * Object转成JSON数据
     */
    private String toJson(Object object){
        if(object instanceof Integer || object instanceof Long || object instanceof Float ||
                object instanceof Double || object instanceof Boolean || object instanceof String){
            return String.valueOf(object);
        }
        return gson.toJson(object);
    }

    /**
     * JSON数据，转成Object
     */
    private <T> T fromJson(String json, Class<T> clazz){
        return gson.fromJson(json, clazz);
    }


    public String listToJson(List list) {
        return JSON.toJSONString(list);
    }

    public List jsonToList(String json, Class clazz){
        if(json.length() == 0) {
            return null;
        }
        JSONArray jsonArray = JSON.parseArray(json);
        return jsonArray.toJavaList(clazz);
    }

}