package com.yanzuoguang.cloud.aop;

import com.yanzuoguang.util.log.Log;
import org.springframework.boot.web.servlet.filter.OrderedHiddenHttpMethodFilter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

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

/**
 * 跨域的支持
 *
 * @author 颜佐光
 */
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {

    public WebConfig() {
        Log.info(WebConfig.class, "跨域已开启支持");
    }

    @Bean
    public HiddenHttpMethodFilter hiddenHttpMethodFilter() {
        return new OrderedHiddenHttpMethodFilter() {
            @Override
            protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
                    throws ServletException, IOException {
                try {
                    filterChain.doFilter(request, response);
                } catch (Exception ex) {
                    System.err.println("请求地址错误:" + request.getRequestURI());
                    throw ex;
                }
            }
        };
    }

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowCredentials(true)
                .allowedMethods("GET", "POST", "DELETE", "PUT")
                .maxAge(3600);
    }
}