package fr.plil.sio.web.mvc;
  
  import javax.servlet.ServletContext;
  import javax.servlet.ServletException;
  import javax.servlet.ServletRegistration;

  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;

  import org.springframework.web.WebApplicationInitializer;

  import org.springframework.web.context.ContextLoaderListener;
  import org.springframework.web.context.WebApplicationContext;

  import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
  import org.springframework.web.servlet.DispatcherServlet;

  
  public class WebAppInitializer implements WebApplicationInitializer {

      
      private static final Logger logger = LoggerFactory.getLogger(WebAppInitializer.class);    
      

      @Override
      public void onStartup(ServletContext servletContext) throws ServletException {

          logger.info("starting web app initializer");

          WebApplicationContext context = getContext();
          servletContext.addListener(new ContextLoaderListener(context));

          ServletRegistration.Dynamic dispatcher = servletContext
                  .addServlet("dispatcher", new DispatcherServlet(context));

          dispatcher.setLoadOnStartup(1);

          dispatcher.addMapping("/");

      }

      private AnnotationConfigWebApplicationContext getContext() {

          logger.info("start web application context");

          AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
          context.register(WebAppConfig.class);
          return context;
      }
  }