/**
 * This file is part of the Meeds project (https://meeds.io/).
 *
 * Copyright (C) 2020 - 2025 Meeds Association contact@meeds.io
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.gatein.pc.test.controller.unit;

import org.gatein.common.io.IOTools;
import org.gatein.common.io.Serialization;
import org.gatein.common.io.SerializationFilter;
import org.gatein.common.text.CharBuffer;
import org.gatein.common.text.FastURLEncoder;
import org.gatein.common.util.Base64;
import org.gatein.pc.api.ContainerURL;
import org.gatein.pc.api.URLFormat;

import org.gatein.pc.controller.state.PageNavigationalState;
import org.gatein.pc.portlet.impl.jsr168.PortletUtils;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import java.util.Collections;
import java.util.Map;

/**
 * A class that is able to create portlet URL
 *
 */
public class PortletURLRenderer
{

   /** . */
   final Serialization<PageNavigationalState> serialization;

   /** . */
   final HttpServletRequest clientReq;

   /** . */
   final HttpServletResponse clientResp;

   /** . */
   final PageNavigationalState pageNS;

   public PortletURLRenderer(
      PageNavigationalState pageNS,
      HttpServletRequest clientReq,
      HttpServletResponse clientResp,
      Serialization<PageNavigationalState> serialization)
   {
      this.pageNS = pageNS;
      this.clientReq = clientReq;
      this.clientResp = clientResp;
      this.serialization = serialization;
   }

   private String renderURL(Map<String, String> parameters, URLFormat format)
   {
      CharBuffer buffer = new CharBuffer();
      buffer.append(clientReq.getScheme());
      buffer.append("://");
      buffer.append(clientReq.getServerName());
      buffer.append(':');
      buffer.append(Integer.toString(clientReq.getServerPort()));
      buffer.append(PortletUtils.getPortalContextPath(clientReq));
      buffer.append(clientReq.getServletPath());

      //
      if (clientReq.getPathInfo() != null)
      {
         buffer.append(clientReq.getPathInfo());
      }

      //
      String parameterSeparator = format.getWantEscapeXML() == Boolean.TRUE ? "&amp;" : "&";

      //
      boolean first = true;
      for (Map.Entry<String, String> entry : parameters.entrySet())
      {
         String name = entry.getKey();
         String value = entry.getValue();
         buffer.append(first ? "?" : parameterSeparator);
         buffer.append(name, FastURLEncoder.getUTF8Instance());
         buffer.append('=');
         buffer.append(value, FastURLEncoder.getUTF8Instance());
         first = false;
      }

      //
      String url = buffer.asString();
      return clientResp.encodeURL(url);
   }

   public String renderURL(URLFormat format)
   {
      String pageNavigationalState = null;
      if (pageNS != null)
      {
         byte[] bytes = IOTools.serialize(serialization, SerializationFilter.COMPRESSOR, pageNS);
         pageNavigationalState = Base64.encodeBytes(bytes, Base64.EncodingOption.USEURLSAFEENCODING);
      }

      //
      Map<String, String> parameters;
      if (pageNavigationalState != null)
      {
         parameters = Collections.singletonMap(ControllerRequestParameterNames.PAGE_NAVIGATIONAL_STATE, pageNavigationalState);
      }
      else
      {
         parameters = Collections.emptyMap();
      }

      //
      return renderURL(parameters, format);
   }

   public String renderURL(String windowId, ContainerURL containerURL, URLFormat format)
   {
      ControllerRequestParameterMapFactory factory = new ControllerRequestParameterMapFactory(serialization);

      //
      Map<String, String> parameters = factory.encode(pageNS, windowId, containerURL);

      //
      parameters.put(URLParameterConstants.TYPE, URLParameterConstants.PORTLET_TYPE);

      //
      return renderURL(parameters, format);
   }
}
