package com.kidgrow.zuul.filter;

import cn.hutool.core.collection.ConcurrentHashSet;
import com.kidgrow.common.exception.OpenSignatureException;
import com.kidgrow.common.utils.SignatureUtils;
import com.kidgrow.common.utils.WebUtils;
import com.kidgrow.zuul.config.ApiProperties;
import com.kidgrow.zuul.exception.JsonSignatureDeniedHandler;
import com.kidgrow.zuul.service.feign.BaseAppServiceClient;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;
import org.springframework.web.filter.OncePerRequestFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Map;
import java.util.Set;

/**
 * 石家庄喜高科技有限责任公司 版权所有 © Copyright 2020<br>
 *
 * @Description: 数字验签前置过滤器<br>
 * @Project: <br>
 * @CreateDate: Created in 2020/2/4 14:49 <br>
 * @Author: <a href="4345453@kidgrow.com">liuke</a>
 */
@Slf4j
public class PreSignatureFilter  extends OncePerRequestFilter {
    private JsonSignatureDeniedHandler signatureDeniedHandler;
    private BaseAppServiceClient baseAppServiceClient;
    private ApiProperties apiProperties;
    private static final AntPathMatcher pathMatch = new AntPathMatcher();
    private Set<String> signIgnores = new ConcurrentHashSet<>();

//    public PreSignatureFilter(BaseAppServiceClient baseAppServiceClient, ApiProperties apiProperties, JsonSignatureDeniedHandler jsonSignatureDeniedHandler) {
//        this.baseAppServiceClient = baseAppServiceClient;
//        this.apiProperties = apiProperties;
//        this.signatureDeniedHandler =  jsonSignatureDeniedHandler;
//        // 默认忽略签名
//        signIgnores.add("/");
//        signIgnores.add("/error");
//        signIgnores.add("/favicon.ico");
//        if (apiProperties != null) {
//            if (apiProperties.getSignIgnores() != null) {
//                signIgnores.addAll(apiProperties.getSignIgnores());
//            }
//            if (apiProperties.getApiDebug()) {
//                signIgnores.add("/**/v2/api-docs/**");
//                signIgnores.add("/**/swagger-resources/**");
//                signIgnores.add("/webjars/**");
//                signIgnores.add("/doc.html");
//                signIgnores.add("/swagger-ui.html");
//            }
//        }
//    }

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
        String requestPath = request.getRequestURI();
        System.out.println(request.getHeaderNames());
        //if (apiProperties.getCheckSign() && !notSign(requestPath)) {

            Map params = WebUtils.getParameterMap(request);
            String appid="";
            //params.get("app_id").toString();


            if (!SignatureUtils.validateSign(params,appid)) {
                    throw new OpenSignatureException("签名验证失败!");
            }


        //}
        filterChain.doFilter(request, response);
    }

    protected boolean notSign(String requestPath) {
        if(apiProperties.getSignIgnores()==null){
            return false;
        }
        for (String path : signIgnores) {
            if (pathMatch.match(path, requestPath)) {
                return true;
            }
        }
        return false;
    }
}