/*
    * 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.renderkit.html.util;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Enumeration;
  import java.util.HashMap;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  
  import javax.servlet.ServletContext;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.myfaces.test.AbstractTomahawkViewControllerTestCase;
  import org.apache.myfaces.webapp.filter.servlet.AbstractAttributeMap;
  import org.apache.myfaces.webapp.filter.servlet.RequestHeaderMap;
  import org.apache.myfaces.webapp.filter.servlet.RequestHeaderValuesMap;
  import org.apache.shale.test.mock.MockExternalContext;
  import org.apache.shale.test.mock.MockPrintWriter;
  import org.apache.shale.test.mock.MockResponseWriter;
  
  /**
   * Unit test for the AddResource class which can output script, style and inline
   * javascript into the header or body of an HTML response page.
   */
  public class AddResourceTest extends AbstractTomahawkViewControllerTestCase
  {
      public AddResourceTest(String name)
      {
          super(name);
      }
  
      public void testGetInstance()
      {
  
         Map cacheMap = new LinkedHashMap();
  
          AddResource instance1 = AddResourceFactory.getInstance(null,cacheMap, "/test1", null);
          assertNotNull(instance1);
  
          /* no longer true
          AddResource instance2 = AddResourceFactory.getInstance(null, "/test2", null);
          assertNotSame(instance1, instance2);
          */
  
          AddResourceFactory.getInstance(null,cacheMap, "/test1", null);
      }
      
      /*
      public void setUp()
      {
          // Make sure a FacesContext configured from some previous test case
          // doesn't interfere with the test case we are about to run...
          FacesContextHelper.setCurrentInstance(null);
      }
  
      public void tearDown()
      {
          // Make sure a FacesContext we may have configured in the test case
          // just completed doesn't interfere with test cases run later.
          FacesContextHelper.setCurrentInstance(null);
      }
      */
  
      /**
       * Simple test helper class to allow unit tests to configure
       * mock FacesContext objects as the "current instance".
       * <p>
       * The method FacesContext.setCurrentInstance is protected, and
       * hence cannot be accessed by unit tests wanting to configure
       * a mock object as the value seen by code calling method
       * FacesContext.getCurrentInstance().
       */
      /*
      private static abstract class FacesContextHelper extends FacesContext
      {
          public static void setCurrentInstance(FacesContext other)
          {
              FacesContext.setCurrentInstance(other);
          }
     }*/
 
     /**
      * Configure a fake JSF environment for a test, consisting of a
      * FacesContext and dependent objects.
      * <p>
      * EasyMock control objects are used to emulate the necessary bits.
      */
     /*
     private static class MockState
     {
         Writer _writer;
         ResponseWriter _htmlResponseWriter;
         MockControl _servletRequestControl;
         HttpServletRequest _servletRequest;
         MockControl _servletResponseControl;
         HttpServletResponse _servletResponse;
         FacesContext _facesContext;
 
         public void setup() throws IOException
         {
             // set up a writer object to be the "response" output stream.
             _writer = new StringWriter();
             String contentType = "text/html";
             String charEncoding = "UTF-8";
             _htmlResponseWriter = new HtmlResponseWriterImpl(_writer, contentType, charEncoding);
 
             // Mock ServletRequest object that:
             // * returns "/test" for context path
             // * returns "/test/foo.jsp" for servlet path
             // * returns "null" for getPathInfo
             // * returns "null" for getHeader
             // * returns "null" for getAttribute
             // * returns null for getSession
             _servletRequestControl = MockControl.createControl(HttpServletRequest.class);
             _servletRequest = (HttpServletRequest) _servletRequestControl.getMock();
             _servletRequest.getContextPath();
             _servletRequestControl.setReturnValue("/test", MockControl.ZERO_OR_MORE);
             _servletRequest.getServletPath();
             _servletRequestControl.setReturnValue("/test/foo.jsp", MockControl.ZERO_OR_MORE);
             _servletRequest.getPathInfo();
             _servletRequestControl.setReturnValue("", MockControl.ZERO_OR_MORE);
             _servletRequest.getHeader("");
             _servletRequestControl.setMatcher(MockControl.ALWAYS_MATCHER);
             _servletRequestControl.setReturnValue(null, MockControl.ZERO_OR_MORE);
             _servletRequest.getAttribute("");
             _servletRequestControl.setMatcher(MockControl.ALWAYS_MATCHER);
             _servletRequestControl.setReturnValue(null, MockControl.ZERO_OR_MORE);
             _servletRequest.setAttribute("", "");
             _servletRequestControl.setMatcher(MockControl.ALWAYS_MATCHER);
             _servletRequestControl.setVoidCallable(MockControl.ZERO_OR_MORE);
             _servletRequest.getSession(false);
             _servletRequestControl.setReturnValue(null, MockControl.ZERO_OR_MORE);
             _servletRequestControl.replay();
 
             // Mock ServletResponse object that:
             // * returns appropriate encoded URLs
             // * returns a PrintWriter wrapping this object's writer member for
             //   calls to getWriter
             _servletResponseControl = MockControl.createControl(HttpServletResponse.class);
             _servletResponse = (HttpServletResponse) _servletResponseControl.getMock();
             _servletResponse.encodeURL("/test/scripts/script1");
             _servletResponseControl.setReturnValue("encoded(/test/scripts/script1)", MockControl.ZERO_OR_MORE);
             _servletResponse.getWriter();
             _servletResponseControl.setReturnValue(new PrintWriter(_writer), MockControl.ZERO_OR_MORE);
             _servletResponse.getCharacterEncoding();
             _servletResponseControl.setReturnValue("UTF-8", MockControl.ZERO_OR_MORE);
             _servletResponseControl.replay();
 
             // The FacesContext needs FactoryFinder configured.
             FactoryFinder.setFactory(FactoryFinder.APPLICATION_FACTORY, ApplicationFactoryImpl.class.getName());
             FactoryFinder.setFactory(FactoryFinder.RENDER_KIT_FACTORY, RenderKitFactoryImpl.class.getName());
 
             // Now create a FacesContext....
             _facesContext = new ServletFacesContextImpl(null,
                     _servletRequest, _servletResponse);
             _facesContext.setResponseWriter(_htmlResponseWriter);
         }
 
         public void verifyControls()
         {
             _servletRequestControl.verify();
             _servletResponseControl.verify();
         }
     }*/
 
     public void testAddJavaScriptHere() throws IOException
     {
         //MockState mockState = new MockState();
         //mockState.setup();
 
         request.setPathElements("/test", "", "", "");
         // now start the test
         AddResource instance1 = AddResourceFactory.getInstance(null,null,"/test", null);
         instance1.addJavaScriptHere(facesContext, "/scripts/script1");
 
         // verify that our mock objects got the expected callbacks
         //mockState.verifyControls();
 
         // verify that:
         // *script tag is output
         // * type attribute is right,
         // * URL has context path prepended to it
         // * URL has been encoded
         // * HTML comments have been used to hide script from non-script-aware
         //   browsers.
         //
         // NOTE: are comments required to hide this script from browsers when
         // there isn't any script body content (just a src attr)?
         String scriptValue = ((MockResponseWriter)facesContext.getResponseWriter()).getWriter().toString(); 
         
         assertEquals(scriptValue, "<script type=\"text/javascript\" src=\"/test/scripts/script1\"/>");
     }
     
     public static class CustomMockExternalContext extends MockExternalContext
     {
         private Map _requestHeaderMap;
         private Map _requestHeaderValuesMap;
         
         public CustomMockExternalContext(ServletContext context,
                 HttpServletRequest request, HttpServletResponse response)
         {
             super(context, request, response);
         }
 
         @Override
         public Map getRequestHeaderMap()
         {
             if (_requestHeaderMap == null)
             {
                 _requestHeaderMap = new RequestHeaderMap((HttpServletRequest)request);
             }
             return _requestHeaderMap;                        
         }
 
         @Override
         public Map getRequestHeaderValuesMap()
         {
             if (_requestHeaderValuesMap == null)
             {
                 _requestHeaderValuesMap = new RequestHeaderValuesMap((HttpServletRequest)request);
             }
             return _requestHeaderValuesMap;
         }
     }
     
     public static class RequestHeaderMap extends AbstractAttributeMap
     {
         private final HttpServletRequest _httpServletRequest;
 
         RequestHeaderMap(HttpServletRequest httpServletRequest)
         {
             _httpServletRequest = httpServletRequest;
         }
 
         protected Object getAttribute(String key)
         {
             return _httpServletRequest.getHeader(key);
         }
 
         protected void setAttribute(String key, Object value)
         {
             throw new UnsupportedOperationException(
                 "Cannot set HttpServletRequest Header");
         }
 
         protected void removeAttribute(String key)
         {
             throw new UnsupportedOperationException(
                 "Cannot remove HttpServletRequest Header");
         }
 
         protected Enumeration getAttributeNames()
         {
             return _httpServletRequest.getHeaderNames();
         }
 
         public void putAll(Map t)
         {
             throw new UnsupportedOperationException();
         }
 
 
         public void clear()
         {
             throw new UnsupportedOperationException();
         }    
     }
 
     public static class RequestHeaderValuesMap extends AbstractAttributeMap
     {
         private final HttpServletRequest _httpServletRequest;
         private final Map                _valueCache = new HashMap();
 
         RequestHeaderValuesMap(HttpServletRequest httpServletRequest)
         {
             _httpServletRequest = httpServletRequest;
         }
 
         protected Object getAttribute(String key)
         {
             Object ret = _valueCache.get(key);
             if (ret == null)
             {
                 _valueCache.put(key, ret = toArray(_httpServletRequest
                     .getHeaders(key)));
             }
 
             return ret;
         }
 
         protected void setAttribute(String key, Object value)
         {
             throw new UnsupportedOperationException(
                 "Cannot set HttpServletRequest HeaderValues");
         }
 
         protected void removeAttribute(String key)
         {
             throw new UnsupportedOperationException(
                 "Cannot remove HttpServletRequest HeaderValues");
         }
 
         protected Enumeration getAttributeNames()
         {
             return _httpServletRequest.getHeaderNames();
         }
 
         private String[] toArray(Enumeration e)
         {
             List ret = new ArrayList();
 
             while (e.hasMoreElements())
             {
                 ret.add(e.nextElement());
             }
 
             return (String[]) ret.toArray(new String[ret.size()]);
         }
     }
 
     public void testWriteWithFullHeader() throws IOException
     {
         //MockState mockState = new MockState();
         //mockState.setup();
         externalContext = new CustomMockExternalContext(servletContext, request, response);
         facesContext.setExternalContext(externalContext);
 
         request.setPathElements("/test", "", "", "");
         String originalResponse =
             "<html><head></head><body></body></html>";
 
         AddResource ar = AddResourceFactory.getInstance(null,null,"/test", null);
         ar.parseResponse(request,originalResponse,response);
         ar.writeWithFullHeader(request,response);
         ar.writeResponse(request,response);
 
         //mockState.verifyControls();
 
         String returnedResponse = new String(((MockPrintWriter)response.getWriter()).content());
         
         //System.out.println(facesContext.getResponseWriter().toString());
         assertEquals(originalResponse, returnedResponse);
     }
 }