/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.myfaces.view.facelets.tag.jsf.core;
  
  import java.io.StringWriter;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  import javax.faces.application.ConfigurableNavigationHandler;
  import javax.faces.application.NavigationCase;
  import javax.faces.component.UIViewParameter;
  import javax.faces.component.UIViewRoot;
  import javax.faces.context.FacesContext;
  import javax.faces.context.ResponseWriter;
  import javax.faces.view.ViewMetadata;
  
  import org.apache.myfaces.shared.renderkit.html.HtmlResponseWriterImpl;
  import org.apache.myfaces.view.facelets.FaceletTestCase;
  import org.apache.myfaces.view.facelets.bean.HelloWorld;
  import org.junit.Assert;
  import org.junit.Test;
  
  public class ViewMetadataTestCase extends FaceletTestCase
  {
      
      protected ConfigurableNavigationHandler navigationHandler;
      
      public static class MockViewNavigationHandlerNavigationHandler
          extends ConfigurableNavigationHandler
      {
          
          Map<String, Set<NavigationCase>> cases = new HashMap<String, Set<NavigationCase>>(); 
  
          @Override
          public NavigationCase getNavigationCase(FacesContext context,
                  String fromAction, String outcome)
          {
              Set<NavigationCase> casesSet = cases.get(outcome);
              if (casesSet == null)
              {
                  return null;
              }
  
              for (NavigationCase navCase : casesSet)
              {
                  if (fromAction == null)
                  {
                      return navCase;
                  }
                  else if (fromAction.equals(navCase.getFromAction()))
                  {
                      return navCase;
                  }
              }
              return null;
          }
  
          @Override
          public Map<String, Set<NavigationCase>> getNavigationCases()
          {
              // TODO Auto-generated method stub
              return cases;
          }
  
          @Override
          public void handleNavigation(FacesContext context, String fromAction,
                  String outcome)
          {
              
          }
      }
      
      @Override
      public void setUp() throws Exception
      {
          super.setUp();        
          navigationHandler = new MockViewNavigationHandlerNavigationHandler();
          application.setNavigationHandler(navigationHandler);
      }
  
     @Override
     public void tearDown() throws Exception
     {
         super.tearDown();
         navigationHandler = null;
     }
     
     @Test
     public void testSimpleViewMetadata() throws Exception
     {
         HelloWorld helloWorld = new HelloWorld(); 
         
         facesContext.getExternalContext().getRequestMap().put("helloWorldBean",
                 helloWorld);
         
         Set<NavigationCase> cases = new HashSet<NavigationCase>();
         NavigationCase navCase = new NavigationCase("viewMetadata.xhtml",null,
                 "somePage.xhtml",null, "somePage.xhtml", null,false,false);
         cases.add(navCase);
         navigationHandler.getNavigationCases().put("somePage.xhtml", cases);
         navigationHandler.getNavigationCase(facesContext, null, "somePage.xhtml");
         
         ViewMetadata metadata = vdl.getViewMetadata(facesContext, "viewMetadata.xhtml");
         UIViewRoot root = metadata.createMetadataView(facesContext);
         
         Collection<UIViewParameter> viewParameters = metadata.getViewParameters(root);
         
         Assert.assertEquals(1, viewParameters.size());
         
         //root.setViewId("viewMetadata.xhtml");
         vdl.buildView(facesContext, root, "viewMetadata.xhtml");
         facesContext.setViewRoot(root);
         
         StringWriter sw = new StringWriter();
         ResponseWriter mrw = new HtmlResponseWriterImpl(sw,"text/html","UTF-8");
         facesContext.setResponseWriter(mrw);
         
         root.encodeAll(facesContext);
         sw.flush();
         System.out.print(sw.toString());
     }
 }