// JavaScript Document
var shortPass = 'Curta'
var badPass = 'Ruim'
var goodPass = 'Boa'
var strongPass = 'Forte'
var min_passwd_len = 5;

  ratingMsgs = new Array(6);
  ratingMsgColors = new Array(6);
  barColors = new Array(6);

  ratingMsgs[0] = "Muito curta";
  ratingMsgs[1] = "Fraca";
  ratingMsgs[2] = "Aceitável";
  ratingMsgs[3] = "Bom";
  ratingMsgs[4] = "Relevante";
  ratingMsgs[5] = "Sem classificação"; //If the password server is down

  ratingMsgColors[0] = "#676767";
  ratingMsgColors[1] = "#aa0033";
  ratingMsgColors[2] = "#f5ac00";
  ratingMsgColors[3] = "#6699cc";
  ratingMsgColors[4] = "#008000";
  ratingMsgColors[5] = "#676767";

  barColors[0] = "#dddddd";
  barColors[1] = "#aa0033";
  barColors[2] = "#ffcc33";
  barColors[3] = "#6699cc";
  barColors[4] = "#008000";
  barColors[5] = "#676767";
  
  var lastScore = 0;
  
function passwordStrength(password,username) {
    score = 0
	


    username = getUserName(username);

    //password < 4
    if (password.length < min_passwd_len ) { 
		  if (password.length > 0) {
			DrawBar(0); 
		  } else {
			ResetBar();
		  }
	  	  return; //shortPass
	  }

    //password == username
    if (password.toLowerCase()==username.toLowerCase()) 
	{ 
		DrawBar(1); 
		return; //badPass
	}

    //password length
    score += password.length * 4
    score += ( checkRepetition(1,password).length - password.length ) * 1
    score += ( checkRepetition(2,password).length - password.length ) * 1
    score += ( checkRepetition(3,password).length - password.length ) * 1
    score += ( checkRepetition(4,password).length - password.length ) * 1

    //password has 3 numbers
    if (password.match(/(.*[0-9].*[0-9].*[0-9])/))  score += 5

    //password has 2 sybols
    if (password.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)) score += 5

    //password has Upper and Lower chars
    if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/))  score += 10

    //password has number and chars
    if (password.match(/([a-zA-Z])/) && password.match(/([0-9])/))  score += 15
    //
    //password has number and symbol
    if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([0-9])/))  score += 15

    //password has char and symbol
    if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([a-zA-Z])/))  score += 15

    //password is just a nubers or chars
    if (password.match(/^w+$/) || password.match(/^d+$/) )  score -= 10

    //verifing 0 < score < 100
    if ( score < 0 )  score = 0
    if ( score > 100 )  score = 100

    if (score < 10 )
	{
		DrawBar(0);
		return;// badPass
	}
	if (score < 40 )
	{
		DrawBar(1);
		return;// goodPass
	}
    if (score < 68 )
	{
		DrawBar(2);
		return;// goodPass
	}

	if (score < 80 )
	{
		DrawBar(3);
		return;// goodPass
	}
	

	DrawBar(4);

    return;// strongPass

}

function checkRepetition(pLen,str) {
    res = ""
    for ( i=0; i<str.length; i++ ) {
        repeated=true
        for (j=0;j < pLen && (j+i+pLen) < str.length;j++)
            repeated=repeated && (str.charAt(j+i)==str.charAt(j+i+pLen))
        if (j<pLen) repeated=false
        if (repeated) {
            i+=pLen-1
            repeated=false
        }
        else {
            res+=str.charAt(i)
        }
    }
    return res
}




  function getElement(name) {
    if (document.all) {
      return document.all(name);
    }
    return document.getElementById(name);
  }

  function getUserName(s) {
	  var parts = s.split("@");
	  return parts[0];
  }


  function DrawBar(rating) {
//alert("DrawBar" + rating);
	lastScore = rating;
    var posbar = getElement('posBar');
    var negbar = getElement('negBar');
    var passwdRating = getElement('passwdRating');
    var barLength = getElement('passwdBar').width;

    if (rating >= 0 && rating <= 4) {  //We successfully got a rating
      posbar.style.width = barLength / 4 * rating + "px";
      negbar.style.width = barLength / 4 * (4 - rating) + "px";
    } else {
      posbar.style.width = "0px";
      negbar.style.width = barLength + "px";
      rating = 5; // Not rated Rating
    }
    posbar.style.background = barColors[rating];
    passwdRating.innerHTML = "<font color='" + ratingMsgColors[rating] +
                             "'>" + ratingMsgs[rating] + "</font>";
  }
  	
  //Resets the password strength bar back to its initial state without any message showing.
  function ResetBar() {
	lastScore = 0;
    var posbar = getElement('posBar');
    var negbar = getElement('negBar');
    var passwdRating = getElement('passwdRating');
    var barLength = getElement('passwdBar').width;

    posbar.style.width = "0px";
    negbar.style.width = barLength + "px";
    passwdRating.innerHTML = "&nbsp;";
  }

 function testPassword(passwd)
{
		var intScore   = 0
		var strVerdict = "weak"
		var strLog     = ""
		
		// PASSWORD LENGTH
		if (passwd.length<5)                         // length 4 or less
		{
			intScore = (intScore+3)
			strLog   = strLog + "3 points for length (" + passwd.length + ")\n"
		}
		else if (passwd.length>4 && passwd.length<8) // length between 5 and 7
		{
			intScore = (intScore+6)
			strLog   = strLog + "6 points for length (" + passwd.length + ")\n"
		}
		else if (passwd.length>7 && passwd.length<16)// length between 8 and 15
		{
			intScore = (intScore+12)
			strLog   = strLog + "12 points for length (" + passwd.length + ")\n"
		}
		else if (passwd.length>15)                    // length 16 or more
		{
			intScore = (intScore+18)
			strLog   = strLog + "18 point for length (" + passwd.length + ")\n"
		}
		
		
		// LETTERS (Not exactly implemented as dictacted above because of my limited understanding of Regex)
		if (passwd.match(/[a-z]/))                              // [verified] at least one lower case letter
		{
			intScore = (intScore+1)
			strLog   = strLog + "1 point for at least one lower case char\n"
		}
		
		if (passwd.match(/[A-Z]/))                              // [verified] at least one upper case letter
		{
			intScore = (intScore+5)
			strLog   = strLog + "5 points for at least one upper case char\n"
		}
		
		// NUMBERS
		if (passwd.match(/\d+/))                                 // [verified] at least one number
		{
			intScore = (intScore+5)
			strLog   = strLog + "5 points for at least one number\n"
		}
		
		if (passwd.match(/(.*[0-9].*[0-9].*[0-9])/))             // [verified] at least three numbers
		{
			intScore = (intScore+5)
			strLog   = strLog + "5 points for at least three numbers\n"
		}
		
		
		// SPECIAL CHAR
		if (passwd.match(/.[!,@,#,$,%,^,&,*,?,_,~]/))            // [verified] at least one special character
		{
			intScore = (intScore+5)
			strLog   = strLog + "5 points for at least one special char\n"
		}
		
									 // [verified] at least two special characters
		if (passwd.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/))
		{
			intScore = (intScore+5)
			strLog   = strLog + "5 points for at least two special chars\n"
		}
	
		
		// COMBOS
		if (passwd.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/))        // [verified] both upper and lower case
		{
			intScore = (intScore+2)
			strLog   = strLog + "2 combo points for upper and lower letters\n"
		}

		if (passwd.match(/([a-zA-Z])/) && passwd.match(/([0-9])/)) // [verified] both letters and numbers
		{
			intScore = (intScore+2)
			strLog   = strLog + "2 combo points for letters and numbers\n"
		}
 
									// [verified] letters, numbers, and special characters
		if (passwd.match(/([a-zA-Z0-9].*[!,@,#,$,%,^,&,*,?,_,~])|([!,@,#,$,%,^,&,*,?,_,~].*[a-zA-Z0-9])/))
		{
			intScore = (intScore+2)
			strLog   = strLog + "2 combo points for letters, numbers and special chars\n"
		}
	
	
		if(intScore < 16)
		{
		   strVerdict = "very weak"
		}
		else if (intScore > 15 && intScore < 25)
		{
		   strVerdict = "weak"
		}
		else if (intScore > 24 && intScore < 35)
		{
		   strVerdict = "mediocre"
		}
		else if (intScore > 34 && intScore < 45)
		{
		   strVerdict = "strong"
		}
		else
		{
		   strVerdict = "stronger"
		}
	
	document.forms.passwordForm.score.value = (intScore)
	document.forms.passwordForm.verdict.value = (strVerdict)
	document.forms.passwordForm.matchlog.value = (strLog)
	
}