/*
Copyright [2020] [https://www.xiaonuo.vip]

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.

Snowy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Snowy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/xiaonuobase/snowy
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/xiaonuobase/snowy
6.若您的项目无法满足以上几点，可申请商业授权，获取Snowy商业授权许可，请在官网购买授权，地址为 https://www.xiaonuo.vip
 */
package com.huimv.sys.core.listener;

import cn.hutool.core.collection.CollectionUtil;
import cn.hutool.extra.spring.SpringUtil;
import cn.hutool.log.Log;
import com.huimv.sys.core.cache.ResourceCache;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.mvc.method.RequestMappingInfo;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;

import javax.annotation.Resource;
import java.util.Collection;
import java.util.Map;
import java.util.Set;

/**
 * 资源搜集器，将项目中所有接口（带@RequestMapping的）都搜集起来
 * <p>
 * 搜集到的接口会被缓存，用于请求时判断请求的接口是否存在
 *
 * @author xuyuxiang
 * @date 2020/3/19 17:33
 */
@Component
public class ResourceCollectListener implements CommandLineRunner {

    private static final Log log = Log.get();

    @Resource
    private ResourceCache resourceCache;

    @Override
    public void run(String... args) {

        //1.获取所有后端接口
        Set<String> urlSet = CollectionUtil.newHashSet();
        Map<String, RequestMappingHandlerMapping> mappingMap = SpringUtil.getApplicationContext().getBeansOfType(RequestMappingHandlerMapping.class);
        Collection<RequestMappingHandlerMapping> mappings = mappingMap.values();
        for (RequestMappingHandlerMapping mapping : mappings) {
            Map<RequestMappingInfo, HandlerMethod> map = mapping.getHandlerMethods();
            map.keySet().forEach(requestMappingInfo -> {
                Set<String> patterns = requestMappingInfo.getPatternsCondition().getPatterns();
                urlSet.addAll(patterns);
            });
        }

        //2.汇总添加到缓存
        resourceCache.putAllResources(urlSet);

        log.info(">>> 缓存资源URL集合完成!资源数量：{}", urlSet.size());
    }
}
