/*
 * 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。
 * 4. 分发源码时候，请注明软件出处 <https://gitee.com/dromara/dante-cloud>
 * 5. 在修改包名，模块名称，项目代码等时，请注明软件出处 <https://gitee.com/dromara/dante-cloud>
 * 6. 若您的项目无法满足以上几点，可申请商业授权
 */

package org.dromara.dante.webmvc.autoconfigure.secure;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.commons.lang3.ObjectUtils;
import org.dromara.dante.web.annotation.Idempotent;
import org.dromara.dante.web.autoconfigure.secure.IdempotentHandler;
import org.dromara.dante.web.autoconfigure.stamp.IdempotentStampManager;
import org.dromara.dante.webmvc.autoconfigure.definition.AbstractHandlerInterceptor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.method.HandlerMethod;

import java.lang.reflect.Method;

/**
 * <p>Description: 幂等拦截器 </p>
 *
 * @author : gengwei.zheng
 * @date : 2021/8/22 15:31
 */
public class IdempotentInterceptor extends AbstractHandlerInterceptor {

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

    private final IdempotentStampManager idempotentStampManager;

    public IdempotentInterceptor(IdempotentStampManager idempotentStampManager) {
        this.idempotentStampManager = idempotentStampManager;
    }


    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        if (!(handler instanceof HandlerMethod handlerMethod)) {
            return true;
        }

        Method method = handlerMethod.getMethod();

        Idempotent idempotent = method.getAnnotation(Idempotent.class);
        if (ObjectUtils.isNotEmpty(idempotent)) {
            String key = generateRequestKey(request);
            return IdempotentHandler.handle(key, idempotent, request.getRequestURI(), idempotentStampManager);
        }

        return true;
    }
}
