package com.svcman.config;

import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.server.ErrorPageRegistrar;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

/**
 * Web 配置：CORS 支持 + SPA 路由转发
 */
@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/api/**")
                .allowedOrigins("*")
                .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS")
                .allowedHeaders("*");
    }

    /**
     * SPA 前端路由支持：
     * 所有非 /api 且非静态资源的 404 请求，回退到 index.html 由前端路由处理
     */
    @Bean
    public ErrorPageRegistrar spaErrorPageRegistrar() {
        return registry -> registry.addErrorPages(
                new ErrorPage(HttpStatus.NOT_FOUND, "/index.html")
        );
    }
}