var wrjs = wrjs || {};

wrjs.pStrength = (function () {

	var _display = ''; 				// mesage to display
	var _nonNumericsLength = 3; 	// number of numeric characters that are needed.
	var _alphaSpecial = 6; 			// number if alpha and special characters that are needed.
	var _pwdNumerics = 0; 			// special characters.
	var _pwdNonNumerics = 0; 		// alpha characters
	var _pwdSpecials = 0; 			// special characters.

	var _parseString = function(xx) {
		var s = '';
	    xx.forEach(function(x) {
	        s = s + x;
	    });
		return s;
	}

	var _ProcessPWD = function(t) {

		t = typeof t == 'object' ? t[0] : t;

		//var numberOfNumerics = this.value
		var numericPattern = /[0-9]/g; // Numeric regex pattern
		var alphaChars = /[a-zA-Z]/g; // Alpha regex pattern
		var specialChars = /\W/g; // special regex pattern.

		// searches for the numerics
		_pwdNumerics = t.value.match(numericPattern) ? _parseString(t.value.match(numericPattern)) : '';
		// searches for the alpha characters.
		_pwdNonNumerics = t.value.match(alphaChars) ? _parseString(t.value.match(alphaChars)) : '';
		// searches for the special characters.
		_pwdSpecials = t.value.match(specialChars) ? _parseString(t.value.match(specialChars)) : '';

		// message to display
		_display =  'Numerics: ' + _pwdNumerics + '\n\r' +
					'NonNumerics: ' + _pwdNonNumerics + '\n\r' +
					'Specials: ' + _pwdSpecials;

		// call password strength function for UI display.
		_pwdStrength();

	};

	var _MixedCase = function() {

		var uCasePattern = /[A-Z]/g;
		var lCasePattern = /[a-z]/g;

		var countUC = _pwdNonNumerics.match(uCasePattern) ? _pwdNonNumerics.match(uCasePattern) : '';
		var countLC = _pwdNonNumerics.match(lCasePattern) ? _pwdNonNumerics.match(lCasePattern) : '';

		var mCase = false;

		if (countUC.length > 0 && countLC.length> 0) {
			mCase = true;
		}
		return mCase;

	};


	var _changeClass = function(weightings) {

	    if (weightings >= 5) {
	        weightings = 5;
	    };

	    var display = [
	        ls.text_invalid,
	        ls.text_weak,
	        ls.text_normal,
	        ls.text_strong,
	        ls.text_verystrong
	    ];

		var strength = $('#strength')
		var el = $('span', strength);
		var field = $('input', strength.parent())

		// DONT SHOW STRENGTH RESULT WHEN ZERO CHARACTERS HAVE BEEN ENTERED
		if(field.val().length == 0) {
			el.removeClass().text('');
		} else {
			el.removeClass().addClass('password_strength_' + weightings).text(display[weightings - 1]);
		};



	};


	var _pwdStrength = function() {

	    var countnonNumbers = _pwdNonNumerics.length + _pwdSpecials.length;
	    var weightings = 1;
	    var pointmixedCase = 0;
	    var pointSpecialChar = 0;
	    var pointgreaterThan9 = 0;

	    // basic check: 3 numbers, 6 alpha / special (combined)
	    if (countnonNumbers >= 6 && _pwdNumerics.length >= _nonNumericsLength) {
	        weightings = 2; // setting the minimum value.

	        // Noting that the mixed case is there.
	        if (_MixedCase()) {
	            pointmixedCase = 1;
	        }

	        // recording special characters (maximum 2 points)
	        pointSpecialChar = _pwdSpecials.length > 2 ? 2 : _pwdSpecials.length;

	        if (countnonNumbers > 6) {
	            pointgreaterThan9 = 1;
	        }
	    }

	    var score = weightings + pointmixedCase + pointSpecialChar + pointgreaterThan9;

	    _changeClass(score);

	};


	// registers the keyUp on the password textbox.
	$.fn.RegisterChecker = function(){

		// registers the required events and binds them to the text box.
		var t = this;
		$(this).on('keydown input change paste blur', function(e) {

			// DELAY FOR ONE MILLISECOND TO ALLOW THE INPUT VALUE TO BE POPULATED
			setTimeout(function() {
				_ProcessPWD(t);
			});

		}).trigger('change');

	};

	var _getInfo = function(){
		console.log(_display);
	};

	return {
		getInfo: _getInfo
	}


})();


// ***********************************************************
// THIS WILL ALL GO INTO THE PAGE / OUTSIDE OF THIS JS FILE
// ***********************************************************

$(document).ready(function() {

    // calls the registration method.
    $('#password').RegisterChecker();

    $('#NewPassword').RegisterChecker();

});