/*
    * Licensed under the GPL License. You may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *   https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
    *
    * THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
    * WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
    * PURPOSE.
   */
  package psiprobe;
  
  import com.opensymphony.sitemesh.webapp.SiteMeshFilter;
  
  import java.util.EnumSet;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.servlet.DispatcherType;
  import javax.servlet.FilterRegistration;
  import javax.servlet.ServletContext;
  import javax.servlet.ServletException;
  import javax.servlet.ServletRegistration;
  import javax.servlet.SessionTrackingMode;
  
  import org.springframework.web.WebApplicationInitializer;
  import org.springframework.web.context.ContextLoaderListener;
  import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
  import org.springframework.web.filter.DelegatingFilterProxy;
  
  /**
   * The class ProbeInitializer.
   */
  public class ProbeInitializer implements WebApplicationInitializer {
  
    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
  
      // Set spring config location
      try (AnnotationConfigWebApplicationContext rootContext =
          new AnnotationConfigWebApplicationContext()) {
        rootContext.register(ProbeConfig.class);
  
        // Set context loader listener
        servletContext.addListener(new ContextLoaderListener(rootContext));
      }
  
      // Set probe servlet
      ServletRegistration.Dynamic probe = servletContext.addServlet("probe", ProbeServlet.class);
  
      // Set Role that can view session attribute values
      servletContext.setInitParameter("attribute.value.roles", "ROLE_MANAGER,ROLE_MANAGER-GUI");
  
      // Set Initial Parameters
      Map<String, String> initParameters = new HashMap<>();
      initParameters.put("contextConfigLocation", "");
      probe.setInitParameters(initParameters);
  
      // Set load on startup
      probe.setLoadOnStartup(0);
  
      // Add Mapping
      probe.addMapping("*.htm", "*.ajax", "/logs/*", "/chart.png");
  
      // Set sitemesh filter
      FilterRegistration.Dynamic sitemesh =
          servletContext.addFilter("sitemesh", SiteMeshFilter.class);
      sitemesh.addMappingForUrlPatterns(
          EnumSet.of(DispatcherType.FORWARD, DispatcherType.REQUEST, DispatcherType.ERROR), false,
          "/*");
  
      // Set security filter
      FilterRegistration.Dynamic security =
          servletContext.addFilter("filterChainProxy", DelegatingFilterProxy.class);
      security.addMappingForUrlPatterns(
          EnumSet.of(DispatcherType.FORWARD, DispatcherType.REQUEST, DispatcherType.ERROR), false,
          "/*");
  
      // Set session cookie config
      servletContext.getSessionCookieConfig().setHttpOnly(true);
      servletContext.getSessionCookieConfig().setSecure(true);
  
      // Set session tracking mode
      EnumSet<SessionTrackingMode> trackingMode = EnumSet.of(SessionTrackingMode.COOKIE);
      servletContext.setSessionTrackingModes(trackingMode);
    }
  
  }