// ----------------------------------------------------------------------
// Javascript form validation routines.
// Author: Stephen Poley
//
// Simple routines to quickly pick up obvious typos.
// All validation routines return true if executed by an older browser:
// in this case validation must be left to the server.
//
// Update Jun 2005: discovered that reason IE wasn't setting focus was
// due to an IE timing bug. Added 0.1 sec delay to fix.
//
// Update Oct 2005: minor tidy-up: unused parameter removed
//
// Update Jun 2006: minor improvements to variable names and layout
// ----------------------------------------------------------------------

var nbsp = 160;		// non-breaking space char
var node_text = 3;	// DOM text node-type
var emptyString = /^\s*$/ ;
var global_valfield;	// retain valfield for timer thread

// --------------------------------------------
//                  trim
// Trim leading/trailing whitespace off string
// --------------------------------------------

function trim(str)
{
  return str.replace(/^\s+|\s+$/g, '');
}

// --------------------------------------------
//                  msg
// Display warn/error message in HTML element.
// commonCheck routine must have previously been called
// --------------------------------------------

function msg(fld,     // id of element to display message in
             msgtype, // class to give element ("warn" or "error")
             message) // string to display
{
  // setting an empty string can give problems if later set to a 
  // non-empty string, so ensure a space present. (For Mozilla and Opera one could 
  // simply use a space, but IE demands something more, like a non-breaking space.)
  var dispmessage;
  if (emptyString.test(message)) 
    dispmessage = String.fromCharCode(nbsp);    
  else  
    dispmessage = message;

  var elem = document.getElementById(fld);
  elem.firstChild.nodeValue = dispmessage;  
  
  elem.className = msgtype;   // set the CSS class to adjust appearance of message
}

// --------------------------------------------
//            commonCheck
// Common code for all validation routines to:
// (a) check for older / less-equipped browsers
// (b) check if empty fields are required
// Returns true (validation passed), 
//         false (validation failed) or 
//         proceed (don't know yet)
// --------------------------------------------

var proceed = 2;  

function commonCheck    (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  if (!document.getElementById) 
    return true;  // not available on this browser - leave validation to the server
  var elem = document.getElementById(infofield);
  if (!elem.firstChild) return true;  // not available on this browser 
  if (elem.firstChild.nodeType != node_text) return true;  // infofield is wrong type of node  

  if (emptyString.test(valfield.value)) {
    if (required) {
      msg (infofield, "error", "pole wymagane");  
      return false;
    }
    else {
      msg (infofield, "warn", "");   // OK
      return true;  
    }
  }
  return proceed;
}

// --------------------------------------------
//            validatePresent
// Validate if something has been entered
// Returns true if so 
// --------------------------------------------

function validatePresent(valfield,   // element to be validated
                         infofield ) // id of element to receive info/error msg
{
  var stat = commonCheck (valfield, infofield, true);
  if (stat != proceed) return stat;

  msg (infofield, "warn", "");  
  return true;
}

// --------------------------------------------
//            validateFileType
// Validate if uploaded file is an image
// Returns true if so 
// --------------------------------------------

function validateFileType(valfield,   // element to be validated
                         infofield, fileTypes ) // id of element to receive info/error msg
{
    var chars = new Array('(', ')', ' ', ',', '&', '%', '@', '#', '$', '^', '*', '?', '`', '~', '\'', ';', ':', '{', '}', '|', '\\', '/', '=', '+', 'ą', 'ę', 'ó', 'ś', 'ł', 'ż', 'ź', 'ć', 'ń');
    if (!valfield.value){ 
      msg (infofield, "warn", "");
      return true;
    }else{

      names = valfield.value.split("\\");
      fileName = names[names.length-1];

      for(var i=0; i<chars.length; i++){
          if(fileName.indexOf(chars[i]) != -1){
              alert('Nazwa pliku nie może zawierać znaku: ' + chars[i] + ', proszę zmienić nazwę pliku i spróbować ponownie.');
          }
      }

      dots = valfield.value.split(".");
	  fileType = "." + dots[dots.length-1];
      str = fileTypes.join(".");
      str = "." + str;
	  if(str.indexOf(fileType) == -1){
	      msg (infofield, "error", "Dozwolone typy: \n\n"+ (fileTypes.join(" .")));
	      return false;
	  }
   }

  msg (infofield, "warn", "");  
  return true;
}

//---------------------------------------------
//				validate passwords
// check if two passwords are different
//---------------------------------------------

function validatePassword(valfield1, valfield2, infofield1, infofield2, required){
  var stat = commonCheck (valfield1, infofield1, required);
  if (stat != proceed) return stat;

  var stat = commonCheck (valfield2, infofield2, required);
  if (stat != proceed) return stat;

	var tfld1 = trim(valfield1.value);
	var tfld2 = trim(valfield2.value);
	if((tfld1 != tfld2) || (valfield1.value == '') || (valfield2.value == '')){
		msg(infofield1, "error", "niezgodne hasła");
		return false;
	}
	msg (infofield1, "warn", "");
	msg (infofield2, "warn", "");
	return true;
}

// --------------------------------------------
//               validateEmail
// Validate if e-mail address
// Returns true if so (and also if could not be executed because of old browser)
// --------------------------------------------

function validateEmail  (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  // value of field with whitespace trimmed off
  var email = /^[^@]+@[^@.]+\.[^@]*\w\w$/  ;
  if (!email.test(tfld)) {
    msg (infofield, "error", "niepoprawny email");
    return false;
  }

//  var email2 = /^[A-Za-z][\w.-]+@\w[\w.-]+\.[\w.-]*[A-Za-z][A-Za-z]$/  ;
//  if (!email2.test(tfld)) 
//    msg (infofield, "warn", "prawdopodobnie niepoprawny email - sprawdź");
//  else
    msg (infofield, "warn", "");
  return true;
}

function validateNIP (valfield,
                      infofield,
                      required)
{
  if (!document.getElementById) 
    return true;  // not available on this browser - leave validation to the server
  var elem = document.getElementById(infofield);
  if (!elem.firstChild) return true;  // not available on this browser 
  if (elem.firstChild.nodeType != node_text) return true;  // infofield is wrong type of node  

  if (emptyString.test(valfield.value)) {
    return true;
  }
  var tfld = trim(valfield.value);
  var nip = /^\d\d\d-\d\d\d-\d\d-\d\d$/;
  inf = document.getElementById(infofield);

  if (!nip.test(tfld)) {
    inf.innerHTML = 'niepoprawny nip';
    return false;
  }else{
    inf.innerHTML = '';
  }
  return true;
}

function validatePostalCode (valfield, 
							 infofield, 
							 required) 
{
  if (!document.getElementById) 
    return true;  // not available on this browser - leave validation to the server
  var elem = document.getElementById(infofield);
  if (!elem.firstChild) return true;  // not available on this browser 
  if (elem.firstChild.nodeType != node_text) return true;  // infofield is wrong type of node  

  if (emptyString.test(valfield.value)) {
    return true;
  }
  var tfld = trim(valfield.value);
  
  var postalCode = /^\d\d-\d\d\d$/;
  inf = document.getElementById(infofield);

  if (!postalCode.test(tfld)) {
    inf.innerHTML = 'niepoprawny kod';
    return false;
  }else{
    inf.innerHTML = '';
  }
  return true;
}

function validatePrice (valfield,
						infofield,
						required)
{
  if (!document.getElementById) 
    return true;  // not available on this browser - leave validation to the server						
  var elem = document.getElementById(infofield);
  if (!elem.firstChild) return true;  // not available on this browser 
  if (elem.firstChild.nodeType != node_text) return true;  // infofield is wrong type of node  

  if (emptyString.test(valfield.value)) {
    return true;
  }
  var tfld = trim(valfield.value);

  var price = /^\d*(,[0-9][0-9]?)?$/;
  inf = document.getElementById(infofield);

  if (!price.test(tfld)) {
    inf.innerHTML = 'niepoprawna kwota ';
    return false;
  }else{
    inf.innerHTML = '';
  }
  return true;
}

// --------------------------------------------
//            validateTelnr
// Validate telephone number
// Returns true if so (and also if could not be executed because of old browser)
// Permits spaces, hyphens, brackets and leading +
// --------------------------------------------

function validateTelnr  (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);  // value of field with whitespace trimmed off
  var telnr = /^\+?[0-9 ()-]+[0-9]$/  ;
  if (!telnr.test(tfld)) {
    msg (infofield, "error", "niepoprawny numer telefonu");
    return false;
  }

  var numdigits = 0;
  for (var j=0; j<tfld.length; j++)
    if (tfld.charAt(j)>='0' && tfld.charAt(j)<='9') numdigits++;

  if (numdigits<6) {
    msg (infofield, "error", "" + numdigits + " cyfr - za mało");
    return false;
  }

  if (numdigits>14)
    msg (infofield, "warn", numdigits + " cyfr - sprawdź");
  else { 
    if (numdigits<10)
      msg (infofield, "warn", "tylko " + numdigits + " cyfr - sprawdź");
    else
      msg (infofield, "warn", "");
  }
  return true;
}

// --------------------------------------------
//             validateAge
// Validate person's age
// Returns true if OK 
// --------------------------------------------

function validateAge    (valfield,   // element to be validated
                         infofield,  // id of element to receive info/error msg
                         required)   // true if required
{
  var stat = commonCheck (valfield, infofield, required);
  if (stat != proceed) return stat;

  var tfld = trim(valfield.value);
  var ageRE = /^[0-9]{1,3}$/
  if (!ageRE.test(tfld)) {
    msg (infofield, "error", "ERROR: not a valid age");
    return false;
  }

  if (tfld>=200) {
    msg (infofield, "error", "ERROR: not a valid age");
    return false;
  }

  if (tfld>110) msg (infofield, "warn", "Older than 110: check correct");
  else {
    if (tfld<7) msg (infofield, "warn", "Bit young for this, aren't you?");
    else        msg (infofield, "warn", "");
  }
  return true;
}