package com.terra.common.service;

import com.terra.common.entity.all.SettingData;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * Redis服务类
 * @author WWW
 */
@Service
public class RedisService {
    @Resource
    private RedisTemplate<String, Object> redisTemplate;

    /**
     * 获取Redis模板
     */
    public RedisTemplate<String, Object> getRedisTemplate() {
        return redisTemplate;
    }

    /**
     * 设置值到redis中
     *
     * @param key   键
     * @param value 值
     */
    public void put(String key, Object value) {
        redisTemplate.opsForValue().set(key, value);
    }

    /**
     * 设置值到redis中,并设置过期时间
     *
     * @param key     键
     * @param value   值
     * @param timeout 时间
     * @param unit    单位
     */
    public void put(String key, Object value, long timeout, TimeUnit unit) {
        redisTemplate.opsForValue().set(key, value, timeout, unit);
    }

    /**
     * 根据key获取value
     *
     * @param key 键
     */
    public Object get(String key) {
        return redisTemplate.opsForValue().get(key);
    }

    /**
     * 是否存在key
     *
     * @param key 键
     */
    public boolean hasKey(String key) {
        return redisTemplate.hasKey(key);
    }

    /**
     * 移除key
     *
     * @param key 键
     */
    public void delete(String key) {
        if (hasKey(key)) {
            redisTemplate.delete(key);
        }
    }

    /**
     * 清空指定键前缀
     *
     * @param subKeyString 键前缀
     */
    public void clearKeys(String subKeyString) {
        Set<String> keys = redisTemplate.keys(subKeyString + "*");
        if (!keys.isEmpty()) {
            redisTemplate.delete(keys);
        }
    }

    /**
     * 清空所有
     */
    public void clearAll() {
        Set<String> keys = redisTemplate.keys("*");
        if (!keys.isEmpty()) {
            redisTemplate.delete(keys);
        }
    }

    /**
     * 根据Key获取List集合
     */
    public <T> List<T> getListByKey(String key) {
        Object obj = get(key);
        if (obj instanceof List<?>) {
            return (List<T>) obj;
        }

        return null;
    }

    /**
     * 根据Key保存数据
     */
    public <T> void saveListByKey(String key, List<T> list) {
        if (null != list && !list.isEmpty()) {
            put(key, list, SettingData.CACHE_EXPIRE, TimeUnit.MINUTES);
        }
    }

    /**
     * 根据Key保存数据
     */
    public <T> void saveListByKey(String key, List<T> list, Integer minutes) {
        if (null != list && !list.isEmpty()) {
            put(key, list, minutes, TimeUnit.MINUTES);
        }
    }
}