/**
@name jQuery pwdMeter 1.0.1
@author Shouvik Chatterjee (mailme@shouvik.net) Modified by e107 Inc. 
@date 31 Oct 2010
@modify 31 Dec 2010
@license Free for personal and commercial use as long as the author's name retains
*/
(function(jQuery){

jQuery.fn.pwdMeter = function(options){


	options = jQuery.extend({
	
		minLength: 6,
		displayGeneratePassword: false,
		generatePassText: 'Generate',
		generatePassClass: 'GeneratePasswordLink',
		randomPassLength: 13,
        passwordBox: this
	
	}, options);

	var pwdObj = this;
	
	$(pwdObj).after("<span id=\"pwdMeter\" class=\"neutral\">Very Weak</span>");

	return this.each(function(index){
	
		$(this).keyup(function(){
			evaluateMeter();
		});
		
		
		function evaluateMeter(){

			var passwordStrength   = 0;
			var password = $(options.passwordBox).val();
			
			$("#showPwdBox").val(password);

			if ((password.length >0) && (password.length <=5)) passwordStrength=1;
		
			if (password.length >= options.minLength) passwordStrength++;

			if ((password.match(/[a-z]/)) && (password.match(/[A-Z]/)) ) passwordStrength++;

			if (password.match(/\d+/)) passwordStrength++;

			if (password.match(/.[!,@,#,$,%,^,&,*,?,_,~,-,(,)]/))	passwordStrength++;

			if (password.length > 12) passwordStrength++;
		
			$('#pwdMeter').removeClass();
			$('#pwdMeter').addClass('neutral');
		
			switch(passwordStrength){
			case 1:
			  $('#pwdMeter').addClass('veryweak');
			  $('#pwdMeter').text('Very Weak');
			  break;
			case 2:
			  $('#pwdMeter').addClass('weak');
			  $('#pwdMeter').text('Weak');
			  break;
			case 3:
			  $('#pwdMeter').addClass('medium');
			  $('#pwdMeter').text('Medium');
			  break;
			case 4:
			  $('#pwdMeter').addClass('strong');
			  $('#pwdMeter').text('Strong');
			  break;
			case 5:
			  $('#pwdMeter').addClass('verystrong');
			  $('#pwdMeter').text('Very Strong');
			  break;		  		  		  
			default:
			  $('#pwdMeter').addClass('neutral');
			  $('#pwdMeter').text('Very Weak');
			}		
		
		}
		
	
		if(options.displayGeneratePassword){
			$('#pwdMeter').before('&nbsp;<a href="#" id="Spn_PasswordGenerator" class="'+options.generatePassClass+'">'+ options.generatePassText +'</a><br />');
			$('#pwdMeter').after('&nbsp;<a href="#" id="showPwd">Show</a>');
			$(pwdObj).after('<input id="showPwdBox" type="text" class="'+ $(pwdObj).attr('class')  +'" style="display:none" size="'+ $(pwdObj).attr('size')  +'"  value="" />');
       		
		}
		
		$('#Spn_PasswordGenerator').click(function(){
			var randomPassword = random_password();
			$('#Spn_NewPassword').text(randomPassword);
			$(options.passwordBox).val(randomPassword);
		//	alert(randomPassword);
			evaluateMeter();
		});
		
		$("#showPwd").click(function () {
			var id = $(pwdObj).attr("type");
			$(pwdObj).toggle();
			$("#showPwdBox").toggle();
			var text = $(this).text() == 'Show' ? 'Hide' : 'Show';
    		$(this).text(text);

		});
		
		
		function random_password() {
			var allowed_chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz!?$?%^&*()_-+={[}]:;@~#|\<,>.?/";
			var pwd_length = options.randomPassLength;
			var rnd_pwd = '';
			for (var i=0; i<pwd_length; i++) {
				var rnd_num = Math.floor(Math.random() * allowed_chars.length);
				rnd_pwd += allowed_chars.substring(rnd_num,rnd_num+1);
			}
			return rnd_pwd;
		}		
	
	});

}

})(jQuery)