browser = navigator.appName;
horni_okno = "";
  var separator = "$"
  
  var courses = new Array()
  var actualCourse = "";
  var testURL = "";
  var qCount = 0 // celkovy pocet otazek  
  var results = null // pole s pocty vybranych variant;
  var questionSet = new Array();
  var test_repeat = false;
  var respondents = [];
  var questions = [];
  
var testElements = [
  ["90d1d6645b5f8084b2f8656053f06da5", "a_a_1"],
  ["5100740c21f035822e341e43f9e656e5", "a_a_1"],
  ["27072b6f65e4120834ebd39112950692", "a_a_1"],
  ["ace7c792602d274db3bf42f677d47507", "a_a_1"],
  ["a2e4dc63af453f2f6224d076a5a58c88", "a_a_1"],
  ["0296817cf2e75706c3f1c240503744af", "a_a_1"],
  ["c4e3879909ba02310d429bc91c1c0736", "a_a_1"],
  ["61127cb33147a0b649ede8a402a16b85", "a_a_1"],
  ["05c6fdf255937f476e1ca69accad9222", "a_a_1"]
]

function Result () {
  this.type = "";
  this.value = ""
  this.idmd5 = ""
  
}

function Respondent(name, uco) {
  this.name = name;
  this.uco = uco; 
  this.results = new Array();
  
   
   this.getResultTable = function () {
    var vystup = "<tr>"
   
    vystup += "<td>" + this.name + "</td>";
    
   // vystup += "<td>" + this.getBlankCount() + "</td>";
    
    for (var i= 0; i < this.results.length; i++) { 
      var trida = "white";
      if (this.results[i] == "") trida = "red";
      if (this.results[i] == "-") trida = "blue";
      var vysledek = this.results[i];
      //vysledek = vysledek.replace(/\./g, ",");
      //vysledek = vysledek.replace(/ b/g, "");
      vystup += "<td style=\"background-color: " + trida + "\">" +  vysledek + "</td>";
    }
    vystup += "</tr>";
    return vystup
   }
   
    this.getResultsLine = function () {
    var vystup = this.name + separator
    vystup += this.uco + separator;
    vystup += this.prihlaska + separator;
      
    for (var i= 0; i < this.results.length; i++) {
      if (i > 0) vystup += separator 
      vystup += this.results[i]
      
    }
    return vystup
   }
   
   this.getBlankCount = function() {
    var count = 0;
    for (var i = 0; i < this.results.length; i++) {
      if (this.results[i] == "") count++;
    }
    return count;
   }
   
   this.init = function(pocet) {
   this.results = new Array()
    for (var i = 0; i < pocet; i++) {
      this.results[i] = "";
      }
   }
   
} 
 
  var xmlDoc = document.implementation.createDocument("", "test2", null);
//xmlDoc.addEventListener("load", readXML, false);

var xmlQdesc = document.implementation.createDocument("", "test", null);
//xmlQdesc.addEventListener("load", readQdesc, false);

function Test() {
  this.title = ""
  this.url = ""
  this.selected = false;
  this.sady = new Array()
  this.elements = new Array()
  
  this.toString = function () {
  var vystup = "adresa: "
  vystup += this.url  + "\n"
  for (var i =0; i < this.sady.length; i++) {
    vystup += this.sady[i].toString()  
  }
  return vystup
  } 
  
}

function Sada() {
  this.url = ""
  this.otazky = new Array()
  this.poradi = 0;
  this.text = "";
  
  this.toString = function () {
  var vystup = ""
  vystup += "Pocet otazek: " + this.otazky.length  + "\n"
  vystup += "\n" + this.url  + "\n"
  //vystup += this.text  + "\n"
  for (var i =0; i < this.otazky.length; i++) {
    if (i >  0 ) vystup += "\n--\n"
    vystup += (i+1) + this.otazky[i].toString() 
      
  }
  return vystup
  }
 
}

function Otazka() {
  
  this.pouziti = 0;
  this.idmd5 = "";
  this.zadani = "";
  
  this.prvky = new Array();
  //this.prvky.push("r_a")
  
  this.spravne = 0;
  this.varianty = 0
    
  this.toString = function () {
  var vystup = ""
  vystup += "\n" + this.idmd5  + "\n"
  vystup += this.zadani 
  vystup += "\n" + this.spravne + "\n"
  return vystup
  }
  
  this.getItems = function () {
  var vystup = ""
  for (var i = 0; i < this.prvky.length; i++) {
   vystup += this.prvky[i].typ + " " + this.prvky[i].pocet + " " + this.prvky[i].suffix + ";"
  }
  return vystup 
  }
}

function Prvek (typ, suffix) {
  this.typ = typ
  this.pocet = 1; 
  this.suffix = suffix;  
}

var test = new Test()
//inicializace pole s vysledky
var results = new Array() 
  for (var i = 0; i < qCount; i++) {
    results[i] = new Array()
    for (var j =0; j < 5; j++) { results[i][j] = 0 } 
  }


function parse_test() {
  document.getElementById("prubeh_title").style.display = "block";
  
	var vystup = "";
  questionSet = new Array();
  testList = new Array();
  testCounter = 0;
  respondents = []
  results = new Array()
  document.getElementById("test_info").innerHTML = ""
  document.getElementById("sets_read").innerHTML = ""
  document.getElementById("tests_read").innerHTML = ""
  document.getElementById("people_read").innerHTML = ""
  document.getElementById("display").innerHTML = ""
  
  var vstup2 = document.getElementById("test_url").value.split(/\n/)
  for (var ii = 0; ii < vstup2.length; ii++) {
    if (vstup2[ii].indexOf("qdesc") > -1 || vstup2[ii].indexOf("qref") > -1 ) testList.push(vstup2[ii])
  }

  if (testList.length == 0) {
  document.getElementById("test_info").innerHTML = "V seznamu nejsou žáné testy."
  return;
  }
	test_url = testList[0];
  
  
  test = new Test;
  test.url = test_url;
  
  if (test_url.toLowerCase().indexOf(".qdesc") > -1) { 
    loadQdesc(test_url);
     }
  
  if (test_url.toLowerCase().indexOf(".qref") > -1) { 
    loadQref(test_url);
     }
  
}

function loadQref(t_url) {
  //alert("nacitam qref: " + t_url)
  var req = new XMLHttpRequest();
  req.open('GET', t_url + "?noproc=", true);
  req.onreadystatechange = function (aEvt) {
  if (req.readyState == 4) {
     if(req.status == 200) {
        
        readQref(req.responseText)
        
        }
     else
      dump("Error loading odpovednik\n");
    }
  
  } 
  req.send(null);
} 

function readQref(retez) {

  //var xmlQref = (new DOMParser()).parseFromString(retez, "application/xml");
  var adresa = retez.match(/\<QDESC_URL\>\s*(\/.+\.qdesc)[\s\<]/)[1];
  if (adresa.charAt(0) == "/") adresa = "https://is.muni.cz/auth" + adresa 
  //trim( retez.substring(retez.indexOf("<QDESC_URL>")+11, retez.indexOf("<\/QDESC_URL>")+1) )
  //var adresa = xmlQref.childNodes[0].querySelector("QDESC_URL");
   //alert(" qdesc: $" + adresa + "$")
  loadQdesc(adresa)
   
}

function loadQdesc(t_url) {
  if (t_url.charAt(0) == "/") t_url = "https://is.muni.cz/auth" + t_url 
  var req = new XMLHttpRequest();
  req.open('GET', t_url, true);
  req.onreadystatechange = function (aEvt) {
  if (req.readyState == 4) {
     if(req.status == 200) {
        
        readQdesc(req.responseText)
        
        }
     else
      dump("Error loading odpovednik\n");
  }
  
  }
  req.send(null); 
}    


var setIndex = 0;

function readQdesc(retez) {

  xmlQdesc = (new DOMParser()).parseFromString(retez, "application/xml");
 
  var koren =  xmlQdesc.childNodes[0];
 
  var vystup = ""
  
  var repeater = koren.getElementsByTagName("SKLADAT_OPAKOVANE");
  if (repeater.length > 0) {
    if( repeater[0].firstChild.nodeValue == "ano") {
     test_repeat = true; 
     document.getElementById("test_info").innerHTML = "Test s více průchody. Načítám odpovědi ze všech průchodů."
      }
    if( repeater[0].firstChild.nodeValue == "ano_totez") {
     document.getElementById("test_info").innerHTML = "Test s více průchody, aktualizuje se stejný formulář. Načítám odpovědi z posledního uloženého průchodu."
      }
    if( repeater[0].firstChild.nodeValue == "ne") {
     document.getElementById("test_info").innerHTML = "Test s jediným průchodem."
      }
  }
  var sady = koren.getElementsByTagName("SADY_OTAZEK")
  
  for (var i = 0; i < sady.length; i++) {
    var sada = new Sada()
   
    sada.url = "https:\/\/is.muni.cz\/auth" + sady[i].getAttribute("URL");
    sada.poradi = sady[i].getAttribute("PORADI_SADY");
           
    test.sady.push(sada)
      
  }
  testElements = new Array()
  setIndex = 0
  document.getElementById("sets_read").innerHTML = "Načítám sady otázek"
  readNextSet()
   
}

function readNextSet() {
  if (setIndex < test.sady.length) {
  
  var sada = test.sady[setIndex]
 
  var req = new XMLHttpRequest();
    req.open('GET', sada.url, true);
    req.onreadystatechange = function (aEvt) {
    if (req.readyState == 4) {
      if(req.status == 200) {
          sada.text = req.responseText //.replace(/\n/g,"")                  
          
          var otazky = sada.text.split(/\n--(\s+)?\n/)
          
          for (var i = 0; i < otazky.length; i++) {
            if (otazky[i] == undefined || otazky[i] == "" || otazky[i].indexOf("++") == 0) continue;
            var otazka = new Otazka();
                       
            otazka.idmd5 = hex_md5(otazky[i])
            
            var prvky = otazky[i].match(/ \:[abclmnrtv](\d+[a-z]?(\(\d+x\d+\))?)?/g)
            if ( !prvky ) continue;
            for (var j = 0; j < prvky.length; j++) {
              var casti = prvky[j].match(/ \:([abclmnrtv])(\d*)([a-z]*)/)
              var typ = casti[1];
              var suffix = casti[3];
              //report(otazka.idmd5 + "$" + typ + "$" + suffix + "$")
              var previous = false;
              for (var k =0; k < otazka.prvky.length; k++) {
                 if (otazka.prvky[k].typ == typ 
                 && "rc".indexOf(otazka.prvky[k].typ) > -1 
                 && otazka.prvky[k].suffix == suffix) { 
                 otazka.prvky[k].pocet++; previous = true; 
                  }
                              
              } 
              if (!previous) {  otazka.prvky.push(new Prvek(typ, suffix) ) }
            }
            
            //report( "------ " + otazka.idmd5 + " " + otazka.getItems() )
           
            if (otazky[i].indexOf(":") != -1 ) {
              sada.otazky.push(otazka)
              questions[otazka.idmd5] = otazka;
              }
                        
          }
          
          
          qCount += sada.otazky.length;
          setIndex++;
          document.getElementById("sets_read").innerHTML = "Načítám sady otázek: " + setIndex + "/" + test.sady.length
          
          readNextSet()
          }
     else  dump("Error loading set of questions\n");
      }
    }
  req.send(null);
  }

  else { // konec nacitani sad otazek, jde se na XML s odpovedmi 
  
  
  if (testList.length > 0) {
  loadNextXML()
   document.getElementById("tests_read").innerHTML = "Načítám odpovědi z testů: 0/" + testList.length; 
  }
   
  //document.getElementById("vystup_tabulka").value = test.toString() 
  }
}

function loadNextXML() {

var shortUrl = testList[testCounter];
var auth = "https://is.muni.cz/auth"

if (shortUrl.indexOf(auth) == 0) shortUrl.substring(auth.length)
//document.getElementById("prvky_sady").value = shortUrl;


    var req = new XMLHttpRequest();
  req.open('GET', "https://is.muni.cz/auth/elearning/test_odpovedi.pl?testurl=" + escape(shortUrl) + ";nabizrus=0;nabixml=1;xmlqa=all;prehlosob=1", true);
  
  req.onreadystatechange = function (aEvt) {
  if (req.readyState == 4) {
     if(req.status == 200)
        { 
               parseXML(req.responseText)
       
        }
     else
      alert("Error loading XML with answers\n");
    }
  }
  req.send(null);
}

function parseXML(retez) {
  
  xmlDoc = (new DOMParser()).parseFromString(retez, "application/xml");
  var koren =  xmlDoc.childNodes[0];
 
  var vystup = ""
  
  var lide = koren.getElementsByTagName("PROCHAZEJICI")
  
  for (var i = 0; i < lide.length; i++) {
    
    if (lide[i].querySelector("ODP") == null) continue;
    
    var lastActions = [];
    var pruchody = lide[i].getElementsByTagName("PRUCHOD");
    
    for (var ii = 0; ii < pruchody.length; ii++) {
    var akce = pruchody[ii].getElementsByTagName("AKCE");
    
  //  vyhledani posledni ulozene akce
    var ulozena = null;
    for (var j = 0; j < akce.length; j++) {
      if (akce[j].getAttribute("TYP") == "b" || akce[j].getAttribute("TYP") == "c") ulozena = akce[j];
     }
    
    if (ulozena != null) lastActions[0] = ulozena//.push(ulozena);
    }
    var odpoved = ""
   
    // nacteni ulozene odpovedi 
   
    var jmeno = lide[i].getAttribute("JMENO");
    var uco = lide[i].getAttribute("UCO");
    if (jmeno != null)  {
      if (jmeno.indexOf("(") > -1) jmeno= jmeno.substring(0, jmeno.indexOf("(" ) -1)
    }
     else jmeno = "unknown" 
 
 
 
     var respondent = new Respondent(jmeno, uco)
     respondents.push(respondent)
  
    /* 
    if ( !test_repeat && lastActions.length > 1) {
      lastActions.splice(0, lastActions.length-1)
      } 
    */
    for (var kk = 0; kk < 1 /*lastActions.length*/; kk++) 
      {
      ulozena = lastActions[kk]
      for (var iii= 0; iii < test.sady.length; iii++) {
        var sada = test.sady[iii]
        for (var jjj = 0; jjj < sada.otazky.length; jjj++) {
          var otazka = sada.otazky[jjj];
          
          respondent.results[otazka.idmd5] = new Array()
          var counters = { a:0, b:0, c: 0, l:0, m: 0, n:0, r: 0, t: 0, v: 0 }
          
          var poradi = -1
          //var ids = lastActions[kk].parentNode.querySelectorAll("IDMD5")
          var ids = ulozena.parentNode.querySelectorAll("IDMD5")
          for (var oo = 0; oo < ids.length; oo++) {
            if (ids[oo].firstChild.nodeValue == otazka.idmd5) 
              { poradi = oo + 1; break}
          }
          
          for (var kkk = 0; kkk < otazka.prvky.length; kkk++){
             var prvek = otazka.prvky[kkk]
             var pid = prvek.typ;
             counters[prvek.typ]++;
             if ("crv".indexOf(prvek.typ) > -1) { pid += "_" + String.fromCharCode(96 + counters[prvek.typ] ) }
             if ("antlm".indexOf(prvek.typ) > -1) { pid += "_a_" + counters[prvek.typ] }
             if (prvek.typ == "c") {
               for (var lll =0; lll < prvek.pocet; lll++) {
                 //var odp =  lastActions[kk].querySelector("ODP[POR='" + poradi +"'][ID='" + pid +"'][HOD='" + (lll+1) +"']");
                 var odp =  ulozena.querySelector("ODP[POR='" + poradi +"'][ID='" + pid +"'][HOD='" + (lll+1) +"']");
                 if (odp != undefined && odp != null) respondent.results[otazka.idmd5].push(1)
                 else respondent.results[otazka.idmd5].push("");
               }
             }
             
             else {
                var odp =  ulozena.querySelector("ODP[POR='" + poradi +"'][ID='" + pid +"']");
                 if (odp != undefined && odp != null) respondent.results[otazka.idmd5].push(odp.getAttribute("HOD") )
                 else respondent.results[otazka.idmd5].push("");
             }
             
          } //konec prvku otazky
          
          } //konec otazky 
      } //konec sady
          
      
      /* konewc bloku s extrakci odpovedi z akce */
    }
  }
   if (testCounter < testList.length-1) {
    testCounter++; 
    document.getElementById("tests_read").innerHTML = "Načítám odpovědi z testů: " + testCounter + "/" + testList.length
    
    loadNextXML()
    
   }
   else {
   document.getElementById("tests_read").innerHTML = "Načítám odpovědi z testů: " + testList.length + "/" + testList.length
   showFinalResults()  }
   
}

function showFinalResults() {
  //scitani a statistika
   
   var sep = "\t"
   
   var qIndex = 0;
   var cols = 2;
   var vystup = "<table>"
   
   var row1 = "<tr><th>&#160;<\/th><th>&#160;<\/th>"
   var row2 = "<tr><th>&#160;<\/th><th>&#160;<\/th>"

   var vystup_csv = ""
   var row1_csv = " " + sep + " " + sep
   var row2_csv = " " + sep + " " + sep

   var sadaMin = 0 //parseInt(document.getElementById("sada_min").value)
   var sadaMax = test.sady.length -1 //parseInt(document.getElementById("sada_max").value)

   for (var i =sadaMin; i < sadaMax +1; i++) {
       
      var sada = test.sady[i];
    
      for (var j =0; j <  sada.otazky.length /**/; j++) {
        var otazka = sada.otazky[j];
         row1 += "<th>" + (j+1) + /*" " + otazka.prvky[0].typ + otazka.prvky[0].pocet+ */ "</th>"

         row1_csv += "" + (j+1) + sep 
        for (var kk = 0; kk < otazka.prvky.length; kk++) {
			if (kk > 0) { row1 += "<th></th>"; row1_csv += " " + sep }
			if (otazka.prvky[kk].typ == "c" ) { 
			  for (var ll = 0; ll < otazka.prvky[kk].pocet; ll++)  {
				if (ll > 0) {
				  row1 += "<th>&#160;</th>"
				  row1_csv += " " + sep
				  }
				row2 += "<th>" + (ll+1) + "</th>"
				row2_csv += (ll+1) + sep 
				
			  }
			} else { 
			  row2 += "<th>&#160;</th>"
			  row2_csv = " " + sep 
			}
        }
      }
   }
   row1 += "<\/tr>"
   row2 += "<\/tr>"
   
   vystup += "<thead>"  + row1;
   vystup += row2 + "<\/thead>";
   vystup += "<tbody>"
   
   vystup_csv += row1_csv + "\n" + row2_csv + "\n"
   
    for (var ii = 0; ii < respondents.length; ii++) {
    var resp = respondents[ii]
     var row = "<tr><td>" + resp.name + "<\/td><td>" + resp.uco + "<\/td>" 
     var row_csv = resp.name + sep + resp.uco + sep
    
    for (var i =sadaMin; i < sadaMax+1; i++) {
    
    var sada = test.sady[i];
     for (var j =0; j < sada.otazky.length; j++) {
      var otazka = sada.otazky[j];
      var results = resp.results[otazka.idmd5];
      if (!results) break; 
     //report(ii + " "+ j+ " " + otazka.idmd5 +  ": " + results.join("$"))
      var pozice = 0;
      for (var k = 0; k < otazka.prvky.length; k++) {
        var prvek = otazka.prvky[k]
        if (prvek.typ == "c") {
          for (var ll = 0; ll < prvek.pocet; ll++) {
            row += "<td>" + results[pozice] + "</td>"
            row_csv += "" + results[pozice] + sep
            pozice++;
          }
          
        }
        else {
        row += "<td>" + results[pozice] + "</td>"
        row_csv += "" + results[pozice] + sep
            pozice++;
        }
      } //konec vypisu prvku otazky 
      
    } //koenc vypisu cele otazky
    
   } //konec vypisu sady 
   row += "</tr>"
    vystup += row;
    vystup_csv += row_csv + "\n"
  } 
 vystup += "<\/tbody>" 
  vystup += "</table>";
  
  vystup = "<div class=\"no-print\"><h3>Výstup v CSV<\/h3><textarea rows=\"10\" cols=\"150\" class='csv'>" + vystup_csv + "<\/textarea><br \/><br \/><p style=\"font-size:90%;\"><strong>Doporučujeme:</strong> Označte celou tabulku a zkopírujte ji např. do Microsoft Excel, nebo Google Spreadsheet.<\/p><\/div>" + vystup;
   document.getElementById("display").innerHTML = vystup;
}




function getOdp(akce, poradi, id) {
	var odps = akce.getElementsByTagName("ODP");
	for (var i =0; i < odps.length; i++ ) {
	  var odp = odps[i];
	  if ( odp.getAttribute("POR") == poradi && odp.getAttribute("ID") == id) return odp.getAttribute("HOD")
	}
	return ""
}
	
	function getBod(akce, poradi) {
	var odps = akce.getElementsByTagName("BOD");
	for (var i =0; i < odps.length; i++ ) {
	  var odp = odps[i];
	  if ( odp.getAttribute("POR") == poradi ) {
		var bod = odp.getAttribute("POC")
		bod = bod.substring(bod.indexOf("*")+1) 
		return bod 
	  } 
	  
	}
	return "";
}

function report(retez) {
 document.getElementById("report").innerHTML += "<p>"  + retez + "<\/p>"
}  
     
  
     
    function hide(nodeId) {
    document.getElementById(nodeId).style.visibility = "hidden"
    }
    
  
    function trim(retez) {
    while (retez.charCodeAt(0) < 33) {
      retez = retez.substring(1)
      }
    while (retez.charCodeAt(retez.length-1) < 33) {
      retez = retez.substring(0, retez.length-2)
      }
    return retez  
    } 
    
 
//********************************
// User-friendly JS   
function showHideHelp(divName) { // zobrazí/skryje řádkovou nápovědu prvku s id "divName"
	document.getElementById(divName).style.display = (document.getElementById(divName).style.display != "block") ? "block" : "none";
}
function checkBrowserCompatibility() { // zobrazí upozornění pro nekompatibilní prohlížeče
	if (navigator.appName=="Opera" || navigator.appName=="Microsoft Internet Explorer") {
		document.getElementById("compatibility-warning").style.display = "block";
	}
}