package cn.home1.oss.lib.webmvc.starter;
   
   import static org.apache.commons.lang3.StringUtils.isNotBlank;
   
   import cn.home1.oss.boot.autoconfigure.AppProperties;
   import cn.home1.oss.lib.webmvc.api.DomainResolver;
   import cn.home1.oss.lib.webmvc.api.RequestResolver;
   import cn.home1.oss.lib.webmvc.internal.DefaultDomainResolver;
   import cn.home1.oss.lib.webmvc.internal.DefaultHttpEntityMethodProcessor;
  import cn.home1.oss.lib.webmvc.internal.DefaultRequestResolver;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.boot.autoconfigure.AutoConfigureBefore;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
  import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
  import org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration;
  import org.springframework.boot.autoconfigure.web.ServerProperties;
  import org.springframework.boot.autoconfigure.web.ServerProperties.Session;
  import org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration;
  import org.springframework.boot.context.properties.EnableConfigurationProperties;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.ComponentScan;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.context.annotation.Import;
  import org.springframework.core.env.Environment;
  import org.springframework.web.servlet.DispatcherServlet;
  import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
  
  import javax.servlet.Servlet;
  
  /**
   * Extends WebMvcConfigurerAdapter make this visable to MockMvc tests,
   * does not override it's method.
   */
  @ConditionalOnClass({Servlet.class, DispatcherServlet.class})
  @ConditionalOnWebApplication
  @AutoConfigureBefore({ErrorMvcAutoConfiguration.class, WebMvcAutoConfiguration.class})
  @Configuration
  @ComponentScan(basePackages = {"cn.home1.oss.lib.webmvc.starter"})
  @EnableConfigurationProperties(value = {AppProperties.class})
  @Import({GsonConfiguration.class, Jackson2Configuration.class})
  public class WebApplicationAutoConfiguration extends WebMvcConfigurerAdapter {
  
    @Autowired
    private ServerProperties serverProperties;
  
    @Autowired
    private AppProperties appProperties;
  
    @Autowired(required = false)
    private Environment environment;
  
    @Autowired(required = false)
    private com.fasterxml.jackson.databind.ObjectMapper objectMapper;
  
    @Bean
    public DomainResolver domainResolver() {
      final Session.Cookie sessionCookie = this.serverProperties.getSession().getCookie();
      return new DefaultDomainResolver( //
        sessionCookie.getDomain(), //
        this.appProperties.getProdEnvironment() //
      );
    }
  
    // ------------------------------ default content negotiation ------------------------------
  
    @Bean
    public RequestResolver requestResolver() {
      return new DefaultRequestResolver(this.appProperties.getSecurity().getLoginEndpoint());
    }
  
    @Bean //TODO gson
    public DefaultHttpEntityMethodProcessor defaultHttpEntityMethodProcessor() {
      return DefaultHttpEntityMethodProcessor.defaultHttpEntityMethodProcessor(this.environment, this.objectMapper);
    }
  
    /**
     * Usage: domain = envDomain(this.env, domain, "");
     *
     * @param env                 env
     * @param rootDomain          domain.com
     * @param productionSubDomain productionSubDomain
     * @return domain
     */
    @Deprecated
    static String envDomain( //
      final String env, //
      final String rootDomain, //
      final String productionSubDomain //
    ) {
      final String domain;
      if (AppProperties.getProdEnvironment(env)) {
        domain = isNotBlank(productionSubDomain) ? //
          productionSubDomain + "." + rootDomain : //
          rootDomain;
      } else {
        domain = env + "." + rootDomain;
      }
      return domain;
   }
 }