package com.hfg.util;

import java.time.ZoneOffset;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import com.hfg.xml.XMLName;
import com.hfg.xml.XMLTag;

//------------------------------------------------------------------------------
/**
 Container for user information.
 <div>
 @author J. Alex Taylor, hairyfatguy.com
 </div>
 */
//------------------------------------------------------------------------------
// com.hfg XML/HTML Coding Library
//
// This library 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 2.1 of the License, or (at your option) any later version.
//
// This library 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 library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// J. Alex Taylor, President, Founder, CEO, COO, CFO, OOPS hairyfatguy.com
// jataylor@hairyfatguy.com
//------------------------------------------------------------------------------

public class UserImpl implements User
{
   private String mUID;
   private String mName;
   private String mFirstName;
   private String mPreferredName;
   private String mSurname;
   private String mEmail;
   private String mPhoneNumber;
   private String mLocation;
   private String mImageUrl;
   private String mClientHost;
   private String mClientHostIP;
   private String mDomain;
   private ZoneOffset mTimezoneOffset;
   private Map<String, String> mFields;

   private String mTagName = XML_USER;

   private static final String XML_USER            = "User";
   private static final String XML_UID             = "UID";
   private static final String XML_EMAIL           = "Email";
   private static final String XML_FIRST_NAME      = "FirstName";
   private static final String XML_PREFERRED_NAME  = "PreferredName";
   private static final String XML_NAME            = "Name";
   private static final String XML_LOCATION        = "Location";
   private static final String XML_IMAGE_URL       = "ImageUrl";
   private static final String XML_CLIENT_HOST     = "ClientHost";
   private static final String XML_DOMAIN          = "Domain";
   private static final String XML_TIMEZONE_OFFSET = "TimezoneOffset";

   private static final XMLName NAME_ATTR = new XMLName("name");

   //###########################################################################
   // CONSTRUCTORS
   //###########################################################################

   //--------------------------------------------------------------------------
   public UserImpl()
   {
   }

   //--------------------------------------------------------------------------
   public UserImpl(XMLTag inXMLTag)
   {
      inXMLTag.verifyTagName(mTagName);

      setUID(inXMLTag.getRequiredSubtagByName(XML_UID).getUnescapedContent());
      setName(inXMLTag.getRequiredSubtagByName(XML_NAME).getUnescapedContent());
      setImageUrl(inXMLTag.getRequiredSubtagByName(XML_IMAGE_URL).getUnescapedContent());

      XMLTag emailTag = inXMLTag.getOptionalSubtagByName(XML_EMAIL);
      if (emailTag != null)
      {
         setEmail(emailTag.getUnescapedContent());
      }

      XMLTag locationTag = inXMLTag.getOptionalSubtagByName(XML_LOCATION);
      if (locationTag != null)
      {
         setLocation(locationTag.getUnescapedContent());
      }

      XMLTag clientHostTag = inXMLTag.getOptionalSubtagByName(XML_CLIENT_HOST);
      if (clientHostTag != null)
      {
         setClientHostIP(clientHostTag.getUnescapedContent());
         setClientHost(clientHostTag.getAttributeValue(NAME_ATTR));
      }

      XMLTag timezoneOffsetTag = inXMLTag.getOptionalSubtagByName(XML_TIMEZONE_OFFSET);
      if (timezoneOffsetTag != null)
      {
         setTimezoneOffset(ZoneOffset.ofTotalSeconds(Integer.parseInt(timezoneOffsetTag.getUnescapedContent())));
      }
   }

   //###########################################################################
   // PUBLIC METHODS
   //###########################################################################

   //--------------------------------------------------------------------------
   public XMLTag toXMLTag()
   {
      XMLTag parentTag = new XMLTag(XML_USER);

      parentTag.addSubtag(new XMLTag(XML_UID).setContent(mUID));
      parentTag.addSubtag(new XMLTag(XML_NAME).setContent(mName));
      parentTag.addSubtag(new XMLTag(XML_IMAGE_URL).setContent(mImageUrl));

      if (StringUtil.isSet(mFirstName))
      {
         parentTag.addSubtag(new XMLTag(XML_FIRST_NAME).setContent(mFirstName));
      }

      if (StringUtil.isSet(mPreferredName))
      {
         parentTag.addSubtag(new XMLTag(XML_PREFERRED_NAME).setContent(mPreferredName));
      }

      if (StringUtil.isSet(mEmail))
      {
         parentTag.addSubtag(new XMLTag(XML_EMAIL).setContent(mEmail));
      }

      if (StringUtil.isSet(mLocation))
      {
         parentTag.addSubtag(new XMLTag(XML_LOCATION).setContent(mLocation));
      }

      String clientHostIP = getClientHostIP();
      String clientHost   = getClientHost();
      if (StringUtil.isSet(clientHost)
          || StringUtil.isSet(clientHostIP))
      {
         XMLTag clientHostTag = parentTag.addSubtag(XML_CLIENT_HOST);
         if (StringUtil.isSet(clientHostIP))
         {
            clientHostTag.setContent(clientHostIP);
         }

         if (StringUtil.isSet(clientHost))
         {
            clientHostTag.setAttribute(NAME_ATTR, clientHost);
         }
      }

      if (mTimezoneOffset != null)
      {
         parentTag.addSubtag(new XMLTag(XML_TIMEZONE_OFFSET).setContent(mTimezoneOffset.getTotalSeconds()));
      }

      return parentTag;
   }

   //--------------------------------------------------------------------------
   @Override
   public String toString()
   {
      return getName();
   }

   //--------------------------------------------------------------------------
   public UserImpl setUID(String inValue)
   {
      mUID = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getUID()
   {
      return mUID;
   }


   //--------------------------------------------------------------------------
   public UserImpl setName(String inValue)
   {
      mName = inValue;

      // Make an attempt to set the first name and surname values
      if (StringUtil.isSet(mName)
          && (null == mSurname
              || null == mFirstName))
      {
         if (mName.contains(","))
         {
            String[] pieces = mName.split(",");
            if (pieces.length > 1)
            {
               if (null == mSurname)
               {
                  String[] surnamePieces = pieces[0].split("\\s+");

                  StringBuilderPlus surname = new StringBuilderPlus().setDelimiter(" ");
                  for (int i = 0; i < surnamePieces.length; i++)
                  {
                     String piece = surnamePieces[i].trim();
                     if (! piece.startsWith("("))
                     {
                        surname.delimitedAppend(piece);
                     }
                  }

                  mSurname = surname.toString();
               }

               if (null == mFirstName) setFirstName(pieces[1].trim());
            }
         }
         else
         {
            String[] pieces = mName.split("\\s+");
            if (pieces.length > 1)
            {
               if (null == mFirstName) setFirstName(pieces[0].trim());

               if (null == mSurname)
               {
                  StringBuilderPlus surname = new StringBuilderPlus().setDelimiter(" ");
                  for (int i = 1; i < pieces.length; i++)
                  {
                     String piece = pieces[i].trim();
                     if (! piece.startsWith("("))
                     {
                        surname.delimitedAppend(piece);
                     }
                  }

                  mSurname = surname.toString();
               }
            }
         }
      }

      return this;
   }

   //--------------------------------------------------------------------------
   public String getName()
   {
      if (null == mName)
      {
         StringBuilderPlus name = new StringBuilderPlus().setDelimiter(" ");

         if (StringUtil.isSet(getPreferredName()))
         {
            name.append(getPreferredName());
         }
         else if (StringUtil.isSet(getFirstName()))
         {
            name.append(getFirstName());
         }

         if (StringUtil.isSet(getSurname()))
         {
            name.delimitedAppend(getSurname());
         }

         if (name.length() > 0)
         {
            mName = name.toString();
         }
      }
      return mName;
   }


   //--------------------------------------------------------------------------
   public UserImpl setFirstName(String inValue)
   {
      mFirstName = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getFirstName()
   {
      return mFirstName;
   }


   //--------------------------------------------------------------------------
   public UserImpl setPreferredName(String inValue)
   {
      mPreferredName = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getPreferredName()
   {
      return mPreferredName;
   }


   //--------------------------------------------------------------------------
   public UserImpl setSurname(String inValue)
   {
      mSurname = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getSurname()
   {
      return mSurname;
   }


   //--------------------------------------------------------------------------
   public UserImpl setDomain(String inValue)
   {
      mDomain = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getDomain()
   {
      return mDomain;
   }


   //--------------------------------------------------------------------------
   public UserImpl setEmail(String inValue)
   {
      mEmail = inValue;

      if (mEmail != null
            && null == mDomain)
      {
         int index = mEmail.indexOf("@");
         setDomain(mEmail.substring(index + 1));
      }

      return this;
   }

   //--------------------------------------------------------------------------
   public String getEmail()
   {
      return mEmail;
   }


   //--------------------------------------------------------------------------
   public UserImpl setPhoneNumber(String inValue)
   {
      mPhoneNumber = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getPhoneNumber()
   {
      return mPhoneNumber;
   }


   //--------------------------------------------------------------------------
   public UserImpl setLocation(String inValue)
   {
      mLocation = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getLocation() { return mLocation; }


   //--------------------------------------------------------------------------
   public UserImpl setImageUrl(String inValue)
   {
      mImageUrl = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getImageUrl()
   {
      return mImageUrl;
   }

   //--------------------------------------------------------------------------
   public UserImpl setClientHost(String inValue)
   {
      mClientHost = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getClientHost()
   {
      return mClientHost;
   }


   //--------------------------------------------------------------------------
   public UserImpl setClientHostIP(String inValue)
   {
      mClientHostIP = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public String getClientHostIP()
   {
      return mClientHostIP;
   }

   
   //--------------------------------------------------------------------------
   public UserImpl setTimezoneOffset(ZoneOffset inValue)
   {
      mTimezoneOffset = inValue;
      return this;
   }

   //--------------------------------------------------------------------------
   public ZoneOffset getTimezoneOffset()
   {
      return mTimezoneOffset;
   }

   //--------------------------------------------------------------------------
   public UserImpl setField(String inName, String inValue)
   {
      if (null == mFields)
      {
         mFields = new HashMap<>(20);
      }

      mFields.put(inName, inValue);

      return this;
   }

   //--------------------------------------------------------------------------
   public String getField(String inName)
   {
      return (mFields != null ? mFields.get(inName) : null);
   }

   //--------------------------------------------------------------------------
   public Set<String> getFieldNames()
   {
      return mFields.keySet();
   }

   //--------------------------------------------------------------------------
   @Override
   public int hashCode()
   {
      String name = getName();
      int result = (StringUtil.isSet(name) ? name.hashCode() : 0);

      String uid = getUID();
      if (uid != null)
      {
         result += 31 * uid.hashCode();
      }

      return result;
   }

   //--------------------------------------------------------------------------
   @Override
   public boolean equals(Object inObj2)
   {
      return (0 == compareTo(inObj2));
   }

   //--------------------------------------------------------------------------
   @Override
   public int compareTo(Object inObj2)
   {
      int result = -1;
      if (inObj2 != null
          && inObj2 instanceof User)
      {
         result = CompareUtil.compare(getName(), ((User) inObj2).getName());

         if (0 == result)
         {
            result = CompareUtil.compare(getUID(), ((User) inObj2).getUID());
         }
      }

      return result;
   }
}