package de.ph87.homeautomation.web;

import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
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;

@Configuration
@RequiredArgsConstructor
public class WebConfig implements WebMvcConfigurer {

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

  @Override
  public void addResourceHandlers(final ResourceHandlerRegistry registry) {
    registry
      .addResourceHandler("/**")
      .addResourceLocations("classpath:/resources/")
      .resourceChain(true)
      .addResolver(new PathResourceResolver() {
        protected Resource getResource(String resourcePath, Resource roomLocation) throws IOException {
          Resource requestedResource = roomLocation.createRelative(resourcePath);
          return requestedResource.exists() && requestedResource.isReadable() ? requestedResource : new ClassPathResource("/resources/index.html");
        }
      });
  }

}