package com.sercurityControl.proteam.util;

import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Component;
import org.springframework.util.ObjectUtils;

import javax.annotation.Resource;
import java.util.*;
import java.util.concurrent.TimeUnit;

@SuppressWarnings(value = {"unchecked", "rawtypes"})
@Component
public class RedisCache {

    @Resource
    public RedisTemplate redisTemplate;

    /**
     * 缓存基本的对象，Integer、String、实体类等
     * 默认30min
     *
     * @param key   缓存的键值
     * @param value 缓存的值
     */
    public <T> void setCacheObject(final String key, final T value) {
        redisTemplate.opsForValue().set(key, value, 30, TimeUnit.MINUTES);
    }

    /**
     * 缓存基本的对象，Integer、String、实体类等
     *
     * @param key      缓存的键值
     * @param value    缓存的值
     * @param timeout  时间
     * @param timeUnit 时间颗粒度
     */
    public <T> void setCacheObject(final String key, final T value, final long timeout, final TimeUnit timeUnit) {
        redisTemplate.opsForValue().set(key, value, timeout, timeUnit);
    }

    /**
     * 设置有效时间
     *
     * @param key     Redis键
     * @param timeout 超时时间
     * @return true=设置成功；false=设置失败
     */
    public Boolean expire(final String key, final long timeout) {
        return expire(key, timeout, TimeUnit.SECONDS);
    }

    /**
     * 设置有效时间
     *
     * @param key     Redis键
     * @param timeout 超时时间
     * @param unit    时间单位
     * @return true=设置成功；false=设置失败
     */
    public Boolean expire(final String key, final long timeout, final TimeUnit unit) {
        return redisTemplate.expire(key, timeout, unit);
    }

    /**
     * 模糊匹配key前缀删除
     */
    public void deleteByPrefix(String prefix) {
        Set<String> keys = redisTemplate.keys(prefix + "*");
        if (!ObjectUtils.isEmpty(keys)) {
            redisTemplate.delete(keys);
        }
    }

    /**
     * 模糊匹配key
     */
    public List<String> getKeyByPrefix(String prefix) {
        Set<String> keys = redisTemplate.keys(prefix + "*");
        assert keys != null;
        return new ArrayList<>(keys);
    }

    /**
     * 查找匹配key
     *
     * @param pattern key
     * @return /
     */
    public List<String> scan(String pattern) {
        ScanOptions options = ScanOptions.scanOptions().match(pattern).build();
        RedisConnectionFactory factory = redisTemplate.getConnectionFactory();
        RedisConnection rc = Objects.requireNonNull(factory).getConnection();
        Cursor<byte[]> cursor = rc.scan(options);
        List<String> result = new ArrayList<>();
        while (cursor.hasNext()) {
            result.add(new String(cursor.next()));
        }
        try {
            RedisConnectionUtils.releaseConnection(rc, factory);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }


    /**
     * 判断是否有key所对应的值
     *
     * @param key 缓存的键值
     * @return 有则返回true，没有则返回false
     */
    public Boolean hasKey(String key) {
        return redisTemplate.hasKey(key);
    }

    /**
     * 获得缓存的基本对象。
     *
     * @param key 缓存键值
     * @return 缓存键值对应的数据
     */
    public <T> T getCacheObject(final String key) {
        ValueOperations<String, T> operation = redisTemplate.opsForValue();
        return operation.get(key);
    }

    /**
     * 删除单个对象
     */
    public Boolean deleteObject(final String key) {
        return redisTemplate.delete(key);
    }

    /**
     * 删除集合对象
     *
     * @param collection 多个对象
     */
    public Long deleteObject(final Collection collection) {
        return redisTemplate.delete(collection);
    }

    /**
     * 缓存List数据
     *
     * @param key      缓存的键值
     * @param dataList 待缓存的List数据
     * @return 缓存的对象
     */
    public <T> long setCacheList(final String key, final List<T> dataList) {
        Long count = redisTemplate.opsForList().rightPushAll(key, dataList);
        return count == null ? 0 : count;
    }

    /**
     * 获得缓存的list对象
     *
     * @param key 缓存的键值
     * @return 缓存键值对应的数据
     */
    public <T> List<T> getCacheList(final String key) {
        return redisTemplate.opsForList().range(key, 0, -1);
    }

    /**
     * 缓存Set
     *
     * @param key     缓存键值
     * @param dataSet 缓存的数据
     * @return 缓存数据的对象
     */
    public <T> BoundSetOperations<String, T> setCacheSet(final String key, final Set<T> dataSet) {
        BoundSetOperations<String, T> setOperation = redisTemplate.boundSetOps(key);
        for (T t : dataSet) {
            setOperation.add(t);
        }
        return setOperation;
    }

    /**
     * 获得缓存的set
     */
    public <T> Set<T> getCacheSet(final String key) {
        return redisTemplate.opsForSet().members(key);
    }

    /**
     * 缓存Map
     */
    public <T> void setCacheMap(final String key, final Map<String, T> dataMap) {
        if (dataMap != null) {
            redisTemplate.opsForHash().putAll(key, dataMap);
        }
    }

    /**
     * 获得缓存的Map
     */
    public <T> Map<String, T> getCacheMap(final String key) {
        return redisTemplate.opsForHash().entries(key);
    }

    /**
     * 往Hash中存入数据
     *
     * @param key   Redis键
     * @param hKey  Hash键
     * @param value 值
     */
    public <T> void setCacheMapValue(final String key, final String hKey, final T value) {
        redisTemplate.opsForHash().put(key, hKey, value);
    }

    /**
     * 往Hash中存入数据
     *
     * @param key   Redis键
     * @param hKey  Hash键
     * @param value 值
     */
    public <T> void setCacheMapValue(final String key, final String hKey, final T value, long time) {
        redisTemplate.opsForHash().put(key, hKey, value);
        if (time > 0) {
            expire(key, time);
        }
    }

    /**
     * 获取Hash中的数据
     *
     * @param key  Redis键
     * @param hKey Hash键
     * @return Hash中的对象
     */
    public <T> T getCacheMapValue(final String key, final String hKey) {
        HashOperations<String, String, T> opsForHash = redisTemplate.opsForHash();
        return opsForHash.get(key, hKey);
    }

    /**
     * 获取多个Hash中的数据
     *
     * @param key   Redis键
     * @param hKeys Hash键集合
     * @return Hash对象集合
     */
    public <T> List<T> getMultiCacheMapValue(final String key, final Collection<Object> hKeys) {
        return redisTemplate.opsForHash().multiGet(key, hKeys);
    }


    /**
     * 删除hash表中的值
     *
     * @param key  键 不能为null
     * @param item 项 可以使多个 不能为null
     */
    public void deleteHashData(String key, Object... item) {
        redisTemplate.opsForHash().delete(key, item);
    }


    /**
     * 获得缓存的基本对象列表
     *
     * @param pattern 字符串前缀
     * @return 对象列表
     */
    public Collection<String> keys(final String pattern) {
        return redisTemplate.keys(pattern);
    }

    /**
     * 根据 key 获取过期时间
     *
     * @param key 键 不能为null
     * @return 时间(秒) 返回0代表为永久有效
     */
    public Long getExpire(Object key) {
        return redisTemplate.getExpire(key, TimeUnit.SECONDS);
    }

    /**
     * @param prefix 前缀
     * @param ids    id
     */
    public void delByKeys(String prefix, Set<String> ids) {
        Set<String> keys = new HashSet<>();
        for (String id : ids) {
            keys.addAll(keys(prefix + id));
        }
        long count = deleteObject(keys);
    }

    /**
     * 根据前缀多对象模糊删除
     */
    public void delByPrefixKeys(String prefix, Set<String> ids) {
        Set<String> keys = new HashSet<>();
        for (String id : ids) {
            keys.addAll(keys(prefix + id));
        }
        keys.parallelStream().forEach(this::deleteByPrefix);
    }

}