package spring.config.servlet;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.BeanNameViewResolver;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.json.MappingJackson2JsonView;
import common.util.bean.BeanUtil;

import javax.servlet.annotation.MultipartConfig;
import java.util.HashMap;

/**
 * Servlet 관련 설정 Class
 *
 * @author 최정우
 * @since 2022.08.31
 */
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = {"kr.co.takensoft"})
public class WebContextConfig implements WebMvcConfigurer {


    /**
     * 1. 특정 URL(Path)에 대한 HTTP Request 처리를 DispatcherServlet이 담당하지 않도록 만들어 주는 설정 (html, js, css, file 등..)
     * 2. Client가 접근하지 못하는 WEB-INF 폴더안에 위치해 있는 정적 자원에 Clien가 접근할 수 있도록 만들어 주는 설정
     *
     * @author 최정우
     * @since 2022.08.31
     */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
        registry.addResourceHandler("/views/**").addResourceLocations("/views/");
        //registry.addResourceHandler("/WEB-INF/jsp/**").addResourceLocations("/jsp/");
    }

    /**
     * Custom Bean Class ViewResolver를 제공해 주기 위한 Bean (파일 다운로드, JSON 등..)
     *
     * @author 최정우
     * @since 2022.08.31
     * @return BeanNameViewResolver
     */
    @Bean(name="beanView")
    public BeanNameViewResolver getBeanView () {
        BeanNameViewResolver beanView = new BeanNameViewResolver();
        beanView.setOrder(0);
        return beanView;
    }

    /**
     * JSON ViewResolver를 제공해 주기 위한 Bean
     *
     * @author 최정우
     * @since 2022.08.31
     * @return MappingJackson2JsonView
     */
    @Bean(name="jsonView")
    public MappingJackson2JsonView getJsonView () {
        ObjectMapper objectMapper = (ObjectMapper) BeanUtil.getBean("objectMapper");
        MappingJackson2JsonView jsonView = new MappingJackson2JsonView(objectMapper);
        jsonView.setExtractValueFromSingleKeyModel(true);
        return jsonView;
    }

    /**
     * Multipart Resolver를 제공해 주기 위한 Bean
     *
     * @author 최정우
     * @since 2022.08.31
     * @return MappingJackson2JsonView
     */
    @Bean(name="multipartResolver")
    public CommonsMultipartResolver getMulltipartResolver  () {
        CommonsMultipartResolver multipartResolver  = new CommonsMultipartResolver();
        multipartResolver.setDefaultEncoding("UTF-8");
        //multipartResolver.setMaxUploadSize(1024 * 1024 * 1024 * 10);//10GB
        //multipartResolver.setMaxInMemorySize(1024 * 1024 * 1024 * 10);//10GB
        return multipartResolver;
    }

    /**
     * JSP ViewResolver를 제공해 주기 위한 Bean
     *
     * @author 최정우
     * @since 2022.08.31
     * @return InternalResourceViewResolver
     */
    @Bean(name="jspView")
    public ViewResolver getJspView() {
        InternalResourceViewResolver jspViewResolver = new InternalResourceViewResolver();
        jspViewResolver.setPrefix("/WEB-INF/jsp/");
        jspViewResolver.setSuffix(".jsp");
        jspViewResolver.setOrder(1);
        return jspViewResolver;
    }



}