/*    
* Copyright (C) 2006 - 2014 Martin Thelian, Alexander Schier, Michael Hamann, 
* Michael Peter Christen, Franz Brausse, fuchsi
*         
* This file is part of YaCy.
* 
* YaCy is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
* 
* YaCy 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 General Public License for more details.
* 
* You should have received a copy of the GNU General Public License
* along with YaCy.  If not, see <http://www.gnu.org/licenses/>.
*/

function addHover() {
  if (document.all&&document.getElementById) {
    var divs = document.getElementsByTagName("div");
    for (i=0; i<divs.length; i++) {
      var node = divs[i];
      if (node.className=="searchresults") {
        node.onmouseover=function() {
          this.className+=" hover";
        }
        node.onmouseout=function() {
          this.className=this.className.replace(" hover", "");
        }
      }
    }
  }
}

function fadeOutBar() {
	document.getElementById("progressbar").setAttribute('style',"transition:transform 0s;-webkit-transition:-webkit-transform 0s;backgroundColor:transparent;");
	/* Also ensure the accessibility property for progress current value is set to 100% */
	document.getElementById("progressbar").setAttribute("aria-valuenow", 100);
}

/**
 * @param offset item number to start with
 * @param itemsperpage count of items requested per page
 * @param totalcount count of items available from YaCy node for this query
 * @returns pagination buttons
 */
function renderPaginationButtons(offset, itemsperpage, totalcount, navurlbase, localQuery, jsResort) {
	var resnav = "<ul class=\"pagination\">";
	var thispage = Math.floor(offset / itemsperpage);
	var firstPage = thispage - (thispage % 10);
	if (thispage == 0) {
		resnav += "<li class=\"disabled\"><a title=\"Previous page\" href=\"#\">&laquo;</a></li>";
	} else {
	 	resnav += "<li><a id=\"prevpage\" title=\"Previous page\" accesskey=\"p\" href=\"";
	 	if (jsResort) {
			resnav += ("javascript:numberedPage(" + (thispage - 1) + ");");
		} else {
			resnav += (navurlbase + "&amp;startRecord=" + ((thispage - 1) * itemsperpage));
		}
	  	resnav += "\">&laquo;</a></li>";
	}
	
	var totalPagesNb = Math.floor(1 + ((totalcount - 1) / itemsperpage));
	var numberofpages = Math.min(10, totalPagesNb - firstPage);
	if (!numberofpages) numberofpages = 10;
	for (i = firstPage; i < (firstPage + numberofpages); i++) {
	    if (i == thispage) {
	       resnav += "<li class=\"active\"><a href=\"#\">";
	       resnav += (i + 1);
	       resnav += "</a></li>";
	    } else {
	       resnav += "<li><a href=\"";
	       if (jsResort) {
                       resnav += ("javascript:numberedPage(" + (i) + ");");
	       } else {
		       resnav += (navurlbase + "&amp;startRecord=" + (i * itemsperpage));
               }
	       resnav += "\">" + (i + 1) + "</a></li>";
	    }
	}
	if ((localQuery && thispage >= (totalPagesNb - 1)) || (!localQuery && thispage >= (numberofpages - 1))) {
		resnav += "<li class=\"disabled\"><a href=\"#\" title=\"Next page\">&raquo;</a></li>";
	} else {
	    resnav += "<li><a id=\"nextpage\" title=\"Next page\" accesskey=\"n\" href=\"";
	    if (jsResort) {
		resnav += ("javascript:numberedPage(" + (thispage + 1) + ");");
	    } else {
		resnav += (navurlbase + "&amp;startRecord=" + ((thispage + 1) * itemsperpage));
	    }
	    resnav += "\">&raquo;</a>";
	}
	resnav += "</ul>";
	return resnav;
}

/**
 * Parses a string representing an integer value
 * @param strIntValue formatted string
 * @returns the number value or undefined when the string is undefined, or NaN when the string is not a number
 */
function parseFormattedInt(strIntValue) {
	var inValue;
	if(strIntValue != null && strIntValue.replace != null) {
		/* Remove thousands separator and try to parse as integer */
		intValue = parseInt(strIntValue.replace(/[\.\,]/g,''))
	}
	return intValue;
}

function statistics(offset, itemscount, itemsperpage, totalcount, localIndexCount, remoteIndexCount, remotePeerCount, navurlbase, localQuery, feedRunning, jsResort) {
  var totalcountIntValue = parseFormattedInt(totalcount);
  var offsetIntValue = parseFormattedInt(offset);
  var itemscountIntValue = parseFormattedInt(itemscount);
  var itemsperpageIntValue = parseFormattedInt(itemsperpage);
  
  var feedingStatusElement = document.getElementById("feedingStatus");
  if(feedingStatusElement != null) {
	  if(feedRunning) {
		  feedingStatusElement.style.visibility = "visible";
	  } else {
		  feedingStatusElement.style.visibility = "hidden";
	  }
  }
  
  /* Display the eventual button allowing to refresh the sort of cached results 
   * only when all feeds are terminated and when there is more than one result */
  var resortCachedElement = document.getElementById("resortCached");
  if(resortCachedElement != null) {
	  if(feedRunning) {
		  resortCachedElement.style.visibility = "hidden";
	  } else if(totalcountIntValue > 1){
		  resortCachedElement.style.visibility = "visible";
	  }
  }
  
  if (totalcountIntValue == 0) {
	  return;
  }
  var elementToUpdate = document.getElementById("offset");
  if (offsetIntValue >= 0 && elementToUpdate != null) {
	  elementToUpdate.innerHTML = offset;
  }
  
  elementToUpdate = document.getElementById("startRecord");
  if (offsetIntValue >= 0 && elementToUpdate != null) {
	  elementToUpdate.setAttribute('value', offsetIntValue - 1);
  }
  
  elementToUpdate = document.getElementById("itemscount");
  if (itemscountIntValue >= 0 && elementToUpdate != null) {
	  elementToUpdate.firstChild.nodeValue = itemscount;
  }
  
  elementToUpdate = document.getElementById("totalcount");
  if(elementToUpdate != null) {
	  elementToUpdate.firstChild.nodeValue = totalcount;
  }
  
  elementToUpdate = document.getElementById("localIndexCount");
  if (elementToUpdate != null) {
	  elementToUpdate.firstChild.nodeValue = localIndexCount;
  }
  
  elementToUpdate = document.getElementById("remoteIndexCount");
  if (elementToUpdate != null) {
	  elementToUpdate.firstChild.nodeValue = remoteIndexCount;
  }
  
  elementToUpdate = document.getElementById("remotePeerCount");
  if (elementToUpdate != null) {
	  elementToUpdate.firstChild.nodeValue = remotePeerCount;
  }
  // compose page navigation

  var progresseBarElement = document.getElementById("progressbar");
  if (progresseBarElement.getAttribute('class') != "progress-bar progress-bar-success") {
	  var percent = 100 * (itemscountIntValue - offsetIntValue + 1) / itemsperpageIntValue;
	  if (percent == 100) {
		  progresseBarElement.setAttribute('style',"transition:transform 0s;-webkit-transition:-webkit-transform 0s;");
		  progresseBarElement.setAttribute('class',"progress-bar progress-bar-success");
		  window.setTimeout(fadeOutBar, 500);
	  } else {
		  progresseBarElement.setAttribute('aria-valuenow', percent);
	  }
	  progresseBarElement.setAttribute('style',"width:" + percent + "%");
  }
  var resnavElement = document.getElementById("resNav");
  if (resnavElement != null && !jsResort) {
	  resnavElement.innerHTML = renderPaginationButtons(offsetIntValue, itemsperpageIntValue, totalcountIntValue, navurlbase, localQuery, jsResort);
  }
}