/**
 * AjaxUtil.js              2005/11/12
 *
 * Author                   lauri.lehtinen@finaldimension.net
 * Version                  2006.08.12
 */
function makeRequest(url, requestType) {

  http_request = false;

  if (window.XMLHttpRequest) { // Mozilla, Safari,...
    http_request = new XMLHttpRequest();
    if (http_request.overrideMimeType) {
      http_request.overrideMimeType('text/xml');
                // See note below about this line
     }
   } else if (window.ActiveXObject) { // IE
     try {
       http_request = new ActiveXObject("Msxml2.XMLHTTP");
     } catch (e) {
       try {
         http_request = new ActiveXObject("Microsoft.XMLHTTP");
       } catch (e) {}
     }
   }

   if (!http_request) {
     return false;
   }
   
   if (requestType == "ONLINE_STATUS") {
     http_request.onreadystatechange = updateOnlineStatus;
   } else if (requestType == "FD_FACES") {
     //alert("FD_FACES");
     //http_request.onreadystatechange = null;
   } else {
     http_request.onreadystatechange = requestType;
   }
   http_request.open('GET', url, true);
   http_request.send(null);
}

function ajaxGet(url, callback) {

  if (url.indexOf('finaldimension.net') == -1) {
    var host = (document.URL.toString().indexOf('www.') > -1) ?
      'http://www.finaldimension.net' : 'http://finaldimension.net';
    
    url = host + url;
  }

  var httpRequest = getHttpRequest();

  if (callback != null) {
    httpRequest.onreadystatechange = callback;
  }
  
  httpRequest.open('GET', url, true);
  
  try {
    httpRequest.overrideMimeType('text/xml');  
  } catch (ex) {}
  
  httpRequest.send(null);  
}

function ajaxPost(url, data, callback) {
  var httpRequest = getHttpRequest();
  
  if (callback != null) {
    httpRequest.onreadystatechange = callback;
  }
  
  httpRequest.open('POST', url, true);
  httpRequest.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=ISO-8859-1");
  httpRequest.send(data);
}

function getHttpRequest() {
  httpRequest = false;

  if (window.XMLHttpRequest) { // Mozilla, Safari,...
    httpRequest = new XMLHttpRequest();
    if (httpRequest.overrideMimeType) {
      httpRequest.overrideMimeType('text/plain');
      // See note below about this line
    }
  } else if (window.ActiveXObject) { // IE
    try {
      httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
    } catch (e) {
      try {
        httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
      } catch (e) {}
    }
  }

  if (!httpRequest) {
    return false;
  } else {
    return httpRequest;
  }
}

function unfmt(str) {
  str = str.replace("å", "?");
  str = str.replace("ä", "?");
  str = str.replace("ö", "?");
  return str;
}

function deleteMessage(msgId) {
  var rows = document.getElementsByTagName('tr');
  var lastId = '';
  for (i = 0; i < rows.length; i++) {
    if (rows[i].getAttribute('name') != 'message_row') {
      continue;
    }
    lastId = rows[i].getAttribute('id');
  }

  var row = document.getElementById(msgId);
  if (row) {
    row.parentNode.removeChild(row);
  }
  var host = (document.URL.toString().indexOf('www.') > -1) ? 'www.finaldimension.net' : 'finaldimension.net';
  var url = 'http://' + host + '/ajax/delete_message_ajax.php?' +
            'id=' + msgId +
	        '&lastId=' + lastId;
  ajaxGet(url, updateOnlineMessages);
  var rows = getElementsByName_iefix('tr', 'message_row');
  for (i = 0; i < rows.length; i++) {
    rows[i].style.backgroundColor = (i % 2 == 0) ? '#e3edf9' : '#c4dffd';
  }
}

function getElementsByName_iefix(tag, name) {   
  var elem = document.getElementsByTagName(tag);
  var arr = new Array();
  for(i = 0,iarr = 0; i < elem.length; i++) {
    att = elem[i].getAttribute("name");
    if(att == name) {
      arr[iarr] = elem[i];
      iarr++;
    }
  }
  return arr;
}

function updateOnlineMessages() {
  if (httpRequest.readyState < 4 || httpRequest.status != 200) return;
  if (httpRequest.responseText == 'error') return;
  
  var resp = unescape(httpRequest.responseText);
  if (!window.event) { // doesn't work with IE
    document.getElementById('message_table').innerHTML += resp;
  }
  window.scrollTo(0, 2000);
}

function updateOnlineStatus() {
  if (http_request.readyState < 4 || http_request.status != 200) return;
 
  //alert(http_request.responseText);
  _xmlDoc = http_request.responseXML;
  //alert(_xmlDoc);
  
  _onlineStatus = _xmlDoc.getElementsByTagName("onlineStatus").item(0);
  //alert(_onlineStatus);
  
  // used to exclude the user him/herself from the online msg recipient list
  _selfNick = unescape(_onlineStatus.attributes[1].value);
  
  
  if (_selfNick != "") { // _selfNick == "" if user is not logged in
      // online messages
    _unreadOnlineMsgs = _onlineStatus.attributes[3].value;
    
    var currentTitle = document.title;
    if ((index = currentTitle.indexOf(') ')) > 0) {
      currentTitle = currentTitle.substr(index + 2);
    }
    
    if (_unreadOnlineMsgs > 0) {
      document.title = '(' + _unreadOnlineMsgs + ') ' + currentTitle;
    } else {
      document.title = currentTitle;
    }
    
    if (_unreadOnlineMsgs < 1) {
      _unreadOnlineMsgsText = 'No new messages';
    } else {
      _unreadOnlineMsgsText = 'You have {0} new message(s)'.replace('{0}', _unreadOnlineMsgs);
    }
  }  
  
  
  // hits
  _hits = _onlineStatus.attributes[2].value + ' hits';
  _hitsToday = _onlineStatus.attributes[4].value;
  _hitsThisWeek = _onlineStatus.attributes[5].value;
  _hitsThisMonth = _onlineStatus.attributes[6].value;
  _hitsThisYear = _onlineStatus.attributes[7].value;
  
   // member count & hyperlinked nicks
  _onlineUserCount = _onlineStatus.attributes[0].value;
   
  _members = _xmlDoc.getElementsByTagName("onlineUser");
  
  _select = document.getElementById("onlineMsgReceivers");


  // update online user count
  _onlineUserCountHTML = "";
  if (_onlineUserCount == 0) {
    _onlineUserCountHTML = 'No users online';
  } else if (_onlineUserCount == 1) {
    _onlineUserCountHTML = '<b>1</b> user online';
  } else {
    _onlineUserCountHTML = '<b>{0}</b> users online'.replace('{0}', _onlineUserCount);
  }  
  _onlineUserCountSpan = document.getElementById("onlineUserCount");
  _onlineUserCountSpan.innerHTML = _onlineUserCountHTML;
  
    // create new online users <div>
  _onlineUsers = document.createElement("div");
  _onlineUsers.setAttribute("id", "onlineUsers");
  
  for (i = 0; i < _members.length; i++) {
    _member = _members[i];
    _uid = _member.attributes[1].value;
    _nick = unescape(_member.attributes[0].value);
    _name = unescape(_member.attributes[3].value);
    _don = _member.attributes[5].value;    
    
    // link to user's profile.
    _nickLink  = "/users/" + _uid;

    _idleTime = _member.attributes[2].value;
    _idleMins = Math.floor(_idleTime / 60);
    _idleSecs = Math.floor(_idleTime - (_idleMins * 60));
    _idleMins = "0" + _idleMins;
    _idleSecs = (_idleSecs < 10) ? "0" + _idleSecs : _idleSecs;
    _idleText = _nick + ' (' + _name + ') has been idle for {0}'.replace('{0}', _idleMins + ':' + _idleSecs);
    
    _lastSeen = unescape(_member.attributes[4].value);
    if (_lastSeen != "") {
      _idleText += ' and was last seen {0}'.replace('{0}', _lastSeen);
    }
    
    // <acronym>
    _acronym = document.createElement("acronym");
    _acronym.setAttribute("title", _idleText);
    
    // <a>
    _a = document.createElement("a");
    _a.setAttribute("href", _nickLink);
      
    /*if (showFaces) {
      //if (_nick == 'nmd' || _nick == 'jansson') {
        _a.onmouseover = function() { mpOn(this); };
	_a.onmouseout = function() { mpOff(); };
	_a.onclick = function() { removeMpNow(); };
      } else {
        _a.onmouseover = showPic;
        _a.onmouseout = hidePic;
      }
      _a.appendChild(document.createTextNode(_nick));   
      if (_don >= 10) {
        _a.innerHTML += '<img src="/img/star.gif" />';
      }
      if (_don >= 20) {
        _a.innerHTML = '<b>' + _a.innerHTML + '</b>';
      }
      _acronym.appendChild(_a);
      _onlineUsers.appendChild(_acronym);
    } else {
      _acronym.appendChild(document.createTextNode(_nick));    
      _a.appendChild(_acronym);
      if (_don >= 10) {
        _a.innerHTML += '<img src="/img/star.gif" />';
      }
      if (_don >= 20) {
        _a.innerHTML = '<b>' + _a.innerHTML + '</b>';
      }
      _onlineUsers.appendChild(_a);
    }*/
    _a.onmouseover = function() { mpOn(this); };
    _a.onmouseout = function() { mpOff(); };
    _a.onclick = function() { removeMpNow(); };
    _a.appendChild(document.createTextNode(_nick));
    if (_don >= 10) {
      _a.innerHTML += '<img src="/img/star.gif" />';
    }
    if (_don >= 20) {
      _a.innerHTML = '<b>' + _a.innerHTML + '</b>';
    }

    _onlineUsers.appendChild(_a);
    
    if (i < _members.length - 1) {
      // separate user names with comma
      _onlineUsers.appendChild(document.createTextNode(", "));
    }
    
    if (false) { // never do this
      _option = document.createElement("option");
      _option.value = _nick;
      _option.appendChild(document.createTextNode(_nick));
      _select.appendChild(_option);
    }   
  }

  // replace old one with new one
  _oldOnlineUsers = document.getElementById("onlineUsers");
  _oldParent = _oldOnlineUsers.parentNode;
  _oldParent.replaceChild(_onlineUsers, _oldOnlineUsers);
    
  
  //if (_selfNick == "nmd") alert(_onlineMembers.innerHTML);

  document.getElementById("hits").innerHTML = _hits
  document.getElementById("hitsToday").innerHTML = _hitsToday;
  document.getElementById("hitsThisWeek").innerHTML = _hitsThisWeek;
  document.getElementById("hitsThisMonth").innerHTML = _hitsThisMonth;
  document.getElementById("hitsThisYear").innerHTML = _hitsThisYear;
  
  if (_selfNick != "") { // _selfNick == "" if user is not logged in
    document.getElementById("unreadOnlineMessages").innerHTML =
      _unreadOnlineMsgsText;
  }
}