/*
    * #%L
    * wcm.io
    * %%
    * Copyright (C) 2019 wcm.io
    * %%
    * Licensed 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.
   * #L%
   */
  package io.wcm.wcm.ui.granite.pathfield.impl.util;
  
  import java.io.IOException;
  import java.util.Enumeration;
  
  import javax.el.ELContext;
  import javax.servlet.Servlet;
  import javax.servlet.ServletConfig;
  import javax.servlet.ServletContext;
  import javax.servlet.ServletException;
  import javax.servlet.ServletRequest;
  import javax.servlet.ServletResponse;
  import javax.servlet.http.HttpSession;
  import javax.servlet.jsp.JspWriter;
  import javax.servlet.jsp.PageContext;
  import javax.servlet.jsp.el.ExpressionEvaluator;
  import javax.servlet.jsp.el.VariableResolver;
  
  import org.apache.sling.api.SlingHttpServletRequest;
  import org.apache.sling.api.SlingHttpServletResponse;
  
  /**
   * Workaround because {@link com.adobe.granite.ui.components.ComponentHelper} supports
   * no direct pass-in of SlingHttpServletRequest.
   */
  @SuppressWarnings("deprecation")
  public final class DummyPageContext extends PageContext {
  
    private final SlingHttpServletRequest slingRequest;
    private final SlingHttpServletResponse slingResponse;
    private final JspWriter jspWriter;
  
    /**
     * @param slingRequest Request
     * @param slingResponse Response
     */
    public DummyPageContext(SlingHttpServletRequest slingRequest, SlingHttpServletResponse slingResponse) {
      this.slingRequest = slingRequest;
      this.slingResponse = slingResponse;
      try {
        this.jspWriter = new JspWriterWrapper(slingResponse.getWriter());
      }
      catch (IOException ex) {
        throw new IllegalArgumentException("Unable to get output writer.", ex);
      }
    }
  
    @Override
    public ServletRequest getRequest() {
      return slingRequest;
    }
  
    @Override
    public ServletResponse getResponse() {
      return slingResponse;
    }
  
    @Override
    public JspWriter getOut() {
      return jspWriter;
    }
  
  
    // --- unsupported methods ---
  
    @Override
    public void initialize(Servlet servlet, ServletRequest request, ServletResponse response, String errorPageURL, boolean needsSession, int bufferSize,
        boolean autoFlush) throws IOException, IllegalStateException, IllegalArgumentException {
      throw new UnsupportedOperationException();
    }
  
    @Override
    public void release() {
      throw new UnsupportedOperationException();
    }
  
    @Override
    public HttpSession getSession() {
      throw new UnsupportedOperationException();
    }
 
   @Override
   public Object getPage() {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public Exception getException() {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public ServletConfig getServletConfig() {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public ServletContext getServletContext() {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void forward(String relativeUrlPath) throws ServletException, IOException {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void include(String relativeUrlPath) throws ServletException, IOException {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void include(String relativeUrlPath, boolean flush) throws ServletException, IOException {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void handlePageException(Exception e) throws ServletException, IOException {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void handlePageException(Throwable t) throws ServletException, IOException {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void setAttribute(String name, Object value) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void setAttribute(String name, Object value, int scope) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public Object getAttribute(String name) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public Object getAttribute(String name, int scope) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public Object findAttribute(String name) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void removeAttribute(String name) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public void removeAttribute(String name, int scope) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public int getAttributesScope(String name) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public Enumeration<String> getAttributeNamesInScope(int scope) {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public ExpressionEvaluator getExpressionEvaluator() {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public VariableResolver getVariableResolver() {
     throw new UnsupportedOperationException();
   }
 
   @Override
   public ELContext getELContext() {
     throw new UnsupportedOperationException();
   }
 
 }