package com.ycl.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;

import java.util.Locale;

/**
 * 通用配置
 * 
 * @author ruoyi
 */
@Configuration
public class ResourcesConfig implements WebMvcConfigurer
{

    /**
     * 跨域配置
     */
    @Bean
    public CorsFilter corsFilter()
    {
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true);
        // 设置访问源地址
        config.addAllowedOriginPattern("*");
        // 设置访问源请求头
        config.addAllowedHeader("*");
        // 设置访问源请求方法
        config.addAllowedMethod("*");
        // 有效期 1800秒
        config.setMaxAge(1800L);
        // 添加映射路径，拦截一切请求
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", config);
        // 返回新的CorsFilter
        return new CorsFilter(source);
    }

    /**
     * 注册拦截器
     * @param registry
     */
    @Override
    public void addInterceptors(InterceptorRegistry registry) {

        // 注册Locale拦截器(国际化)
        registry.addInterceptor(getLocaleChangeInterceptor());
    }

    /**
     * Locale拦截器(国际化)
     * @return
     */
    public LocaleChangeInterceptor getLocaleChangeInterceptor(){
        // 定义一个拦截器
        LocaleChangeInterceptor interceptor = new LocaleChangeInterceptor();
        // 拦截请求中 key 为 lang 的参数
        interceptor.setParamName("lang");

        return interceptor;
    }
    /**
     * 默认解析器 其中locale表示默认语言
     */
    @Bean
    LocaleResolver localeResolver() {
        //替换掉默认的 AcceptHeaderLocaleResolver
        SessionLocaleResolver localeResolver = new SessionLocaleResolver();
        //设置默认语言为简体中文
        localeResolver.setDefaultLocale(Locale.SIMPLIFIED_CHINESE);
        return localeResolver;
    }

}