/*
    * 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.controllers.apps;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.catalina.Context;
  import org.springframework.beans.factory.annotation.Value;
  import org.springframework.stereotype.Controller;
  import org.springframework.web.bind.ServletRequestUtils;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.servlet.ModelAndView;
  
  import psiprobe.controllers.AbstractTomcatContainerController;
  import psiprobe.model.Application;
  import psiprobe.tools.ApplicationUtils;
  import psiprobe.tools.SecurityUtils;
  
  /**
   * Creates the list of web application installed in the same "host" as the Probe.
   */
  @Controller
  public class ListWebappsController extends AbstractTomcatContainerController {
  
    @RequestMapping(path = "/index.htm")
    @Override
    public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response)
        throws Exception {
      return super.handleRequest(request, response);
    }
  
    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request,
        HttpServletResponse response) throws Exception {
  
      boolean calcSize = ServletRequestUtils.getBooleanParameter(request, "size", false)
          && SecurityUtils.hasAttributeValueRole(getServletContext());
  
      List<Context> apps;
      try {
        apps = getContainerWrapper().getTomcatContainer().findContexts();
      } catch (NullPointerException ex) {
        throw new IllegalStateException(
            "No container found for your server: " + getServletContext().getServerInfo(), ex);
      }
      List<Application> applications = new ArrayList<>(apps.size());
      boolean showResources = getContainerWrapper().getResourceResolver().supportsPrivateResources();
      for (Context appContext : apps) {
        // check if this is not the ROOT webapp
        if (appContext.getName() != null) {
          applications.add(ApplicationUtils.getApplication(appContext,
              getContainerWrapper().getResourceResolver(), calcSize, getContainerWrapper()));
        }
      }
      if (!applications.isEmpty() && !showResources) {
        request.setAttribute("no_resources", Boolean.TRUE);
      }
      return new ModelAndView(getViewName(), "apps", applications);
    }
  
    @Value("applications")
    @Override
    public void setViewName(String viewName) {
      super.setViewName(viewName);
    }
  }