package com.yssh.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

/**
 * @author wMeng
 * @ClassName CorsConfig
 * @Description 跨域配置
 * @date 2022/10/31 16:42
 * @Version 1.0
 */
@Configuration
public class CorsConfig extends WebMvcConfigurationSupport {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        // 设置访问路径为 “/” 跳转到指定页面
        registry.addViewController("/").setViewName("redirect:/doc.html");
        // 设置为最高优先级
        registry.setOrder(Ordered.HIGHEST_PRECEDENCE);
    }

	@Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowCredentials(true)
                .allowedOrigins("*")
                .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS")
                .allowedHeaders("*")
                .maxAge(3600);
    }
	
	@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {
		//设置静态资源映射
		registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
        
		registry.addResourceHandler("/**").addResourceLocations("classpath:/static/");
	    registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
	    registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
	}
	
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.addAllowedHeader("*");
        corsConfiguration.addAllowedMethod("*");
        source.registerCorsConfiguration("/**", corsConfiguration);
        return new CorsFilter(source);
    }
}