/*
 * Copyright 2020-2030 码匠君<herodotus@aliyun.com>
 *
 * Dante Engine licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * Dante Engine 是 Dante Cloud 系统核心组件库，采用 APACHE LICENSE 2.0 开源协议，您在使用过程中，需要注意以下几点：
 *
 * 1. 请不要删除和修改根目录下的LICENSE文件。
 * 2. 请不要删除和修改 Dante Engine 源码头部的版权声明。
 * 3. 请保留源码和相关描述文件的项目出处，作者声明等。
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 */

package org.dromara.dante.web.autoconfigure.stamp;

import org.dromara.dante.cache.jetcache.stamp.AbstractStampManager;
import org.dromara.dante.web.autoconfigure.properties.SecureProperties;
import org.dromara.dante.web.constant.WebConstants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.time.Duration;

/**
 * <p>Description: 防刷签章管理器 </p>
 * <p>
 * 这里使用Long类型作为值的存储类型，是为了解决该Cache 同时可以存储Duration相关的数据
 *
 * @author : gengwei.zheng
 * @date : 2021/8/25 21:43
 */
public class AccessLimitedStampManager extends AbstractStampManager<String, Long> {

    private static final Logger log = LoggerFactory.getLogger(AccessLimitedStampManager.class);

    private final SecureProperties secureProperties;

    public AccessLimitedStampManager(SecureProperties secureProperties) {
        super(WebConstants.CACHE_NAME_TOKEN_ACCESS_LIMITED, secureProperties.getAccessLimited().getExpire());
        this.secureProperties = secureProperties;
    }

    public SecureProperties getSecureProperties() {
        return secureProperties;
    }

    @Override
    public Long nextStamp(String key) {
        return 1L;
    }

    /**
     * 计算剩余过期时间
     * <p>
     * 每次create或者put，缓存的过期时间都会被覆盖。（注意：Jetcache put 方法的参数名：expireAfterWrite）。
     * 因为Jetcache没有Redis的incr之类的方法，那么每次放入Times值，都会更新过期时间，实际操作下来是变相的延长了过期时间。
     *
     * @param configuredDuration 注解上配置的、且可以正常解析的Duration值
     * @param expireKey          时间标记存储Key值。
     * @return 还剩余的过期时间 {@link Duration}
     */
    public Duration calculateRemainingTime(Duration configuredDuration, String expireKey) {
        Long begin = get(expireKey);
        Long current = System.currentTimeMillis();
        long interval = current - begin;

        log.debug("[Herodotus] |- AccessLimited operation interval [{}] millis.", interval);

        Duration duration;
        if (!configuredDuration.isZero()) {
            duration = configuredDuration.minusMillis(interval);
        } else {
            duration = getExpire().minusMillis(interval);
        }

        return duration;
    }
}
