package de.ph87.tools.web;

import de.ph87.tools.group.uuid.GroupUuidArgumentResolver;
import de.ph87.tools.tools.numbers.uuid.NumbersUuidArgumentResolver;
import de.ph87.tools.user.uuid.UserPrivateUuidArgumentResolver;
import de.ph87.tools.user.uuid.UserPublicUuidArgumentResolver;
import lombok.NonNull;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.data.web.config.EnableSpringDataWebSupport;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.resource.PathResourceResolver;

import java.io.IOException;
import java.util.List;

import static org.springframework.data.web.config.EnableSpringDataWebSupport.PageSerializationMode.VIA_DTO;

@Configuration
@RequiredArgsConstructor
@EnableSpringDataWebSupport(pageSerializationMode = VIA_DTO)
public class WebConfig implements WebMvcConfigurer {

  @Override
  public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
    argumentResolvers.add(new UserPrivateUuidArgumentResolver());
    argumentResolvers.add(new UserPublicUuidArgumentResolver());
    argumentResolvers.add(new GroupUuidArgumentResolver());
    argumentResolvers.add(new NumbersUuidArgumentResolver());
  }

  @Override
  public void addCorsMappings(CorsRegistry registry) {
    registry.addMapping("/**").allowCredentials(true).allowedOriginPatterns("*").allowedMethods("*");
  }

  @Override
  public void addResourceHandlers(final ResourceHandlerRegistry registry) {
    registry
      .addResourceHandler("/**")
      .addResourceLocations("classpath:/resources/")
      .resourceChain(true)
      .addResolver(new PathResourceResolver() {

        protected Resource getResource(@NonNull String resourcePath, @NonNull Resource roomLocation) throws IOException {
          final Resource requestedResource = roomLocation.createRelative(resourcePath);
          return requestedResource.exists() && requestedResource.isReadable() ? requestedResource : new ClassPathResource("/resources/index.html");
        }
      });
  }

}