/* @projectDescription jQuery Password Strength Plugin - A jQuery plugin to provide accessibility functions
 * @author Tane Piper (digitalspaghetti@gmail.com)
 * @version 2.0
 * @website: http://digitalspaghetti.me.uk/digitalspaghetti
 * @license MIT License: http://www.opensource.org/licenses/mit-license.php
 */
window.digitalspaghetti = window.digitalspaghetti || {};
digitalspaghetti.password = {	
	'defaults' : {
	    'dup_el': null,
		'minChar': 8,
		'colors': ["#555555", "#aa0033", "#f5ac00", "#6699cc", "#008000"],
		'scores': [20, 30, 43, 50],
		'verdicts':	['Too Short', 'Weak', 'Fair', 'Good', 'Strong'],
		'raisePower': 1.4,
		'debug': false
	},
	'ruleScores' : {
		'length': 0,
		'lowercase': 1,
		'uppercase': 3,
		'one_number': 3,
		'three_numbers': 5,
		'one_special_char': 3,
		'two_special_char': 5,
		'upper_lower_combo': 2,
		'letter_number_combo': 2,
		'letter_number_char_combo': 2
	},
	'rules' : {
		'length': true,
		'lowercase': true,
		'uppercase': true,
		'one_number': true,
		'three_numbers': true,
		'one_special_char': true,
		'two_special_char': true,
		'upper_lower_combo': true,
		'letter_number_combo': true,
		'letter_number_char_combo': true
	},
	'validationRules': {
		'length': function (word, score) {
			digitalspaghetti.password.tooShort = false;
			var wordlen = word.length;
			var lenScore = Math.pow(wordlen, digitalspaghetti.password.options.raisePower);
			if (wordlen < digitalspaghetti.password.options.minChar) {
				lenScore = (lenScore - 100);
				digitalspaghetti.password.tooShort = true;
			}
			return lenScore;
		},
		'lowercase': function (word, score) {
			return word.match(/[a-z]/) && score;
		},
		'uppercase': function (word, score) {
			return word.match(/[A-Z]/) && score;
		},
		'one_number': function (word, score) {
			return word.match(/\d+/) && score;
		},
		'three_numbers': function (word, score) {
			return word.match(/(.*[0-9].*[0-9].*[0-9])/) && score;
		},
		'one_special_char': function (word, score) {
			return word.match(/.[!,@,#,$,%,\^,&,*,?,_,~]/) && score;
		},
		'two_special_char': function (word, score) {
			return word.match(/(.*[!,@,#,$,%,\^,&,*,?,_,~].*[!,@,#,$,%,\^,&,*,?,_,~])/) && score;
		},
		'upper_lower_combo': function (word, score) {
			return word.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/) && score;
		},
		'letter_number_combo': function (word, score) {
			return word.match(/([a-zA-Z])/) && word.match(/([0-9])/) && score;
		},
		'letter_number_char_combo' : function (word, score) {
			return word.match(/([a-zA-Z0-9].*[!,@,#,$,%,\^,&,*,?,_,~])|([!,@,#,$,%,\^,&,*,?,_,~].*[a-zA-Z0-9])/) && score;
		}
	},
	'attachWidget': function (element) {
		var output = ['<div id="password-strength" class="clearbox">'];
		output.push('<div class="strenght_box">Password strength: <span id="pass_strength" class="str_none">None</span></div>');
		output.push('<div class="strength_bar"><div class="strength_bar_line">&nbsp;</div></div>');
		output.push('</div>');
		output = output.join('');
		jQuery(element).after(output);
	},
	'debugOutput': function (element) {
		if (typeof console.log === 'function') {
			console.log(digitalspaghetti.password);	
		} else {
			alert(digitalspaghetti.password);
		}
	},
	'addRule': function (name, method, score, active) {
		digitalspaghetti.password.rules[name] = active;
		digitalspaghetti.password.ruleScores[name] = score;
		digitalspaghetti.password.validationRules[name] = method;
		return true;
	},
	'init': function (element, options) {
		digitalspaghetti.password.options = jQuery.extend({}, digitalspaghetti.password.defaults, options);
		digitalspaghetti.password.attachWidget(element);

        if (options.dup_el) {
            jQuery('#'+options.dup_el).keyup(function(){if (jQuery(element).val()) {digitalspaghetti.password.calculateScore(jQuery(element).val());}})
        }

		jQuery(element).keyup(function () {
			digitalspaghetti.password.calculateScore(jQuery(this).val());
		});
		if (digitalspaghetti.password.options.debug) {
			digitalspaghetti.password.debugOutput();
		}
	},
	'calculateScore': function (word) {
		digitalspaghetti.password.totalscore = 0;
		digitalspaghetti.password.width = 0;
		for (var key in digitalspaghetti.password.rules) if (digitalspaghetti.password.rules.hasOwnProperty(key)) {
			if (digitalspaghetti.password.rules[key] === true) {
				var score = digitalspaghetti.password.ruleScores[key];
				var result = digitalspaghetti.password.validationRules[key](word, score);
				if (result) {
					digitalspaghetti.password.totalscore += result;
				}
			}

			if (digitalspaghetti.password.tooShort) {
				digitalspaghetti.password.strColor = digitalspaghetti.password.options.colors[0];
				digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[0];
				digitalspaghetti.password.width =  "0";
			} else if (digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[0] || 
			        (digitalspaghetti.password.options.dup_el && word.toLowerCase() == jQuery('#'+digitalspaghetti.password.options.dup_el).val().toLowerCase())) {
				digitalspaghetti.password.strColor = digitalspaghetti.password.options.colors[1];
				digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[1];
				digitalspaghetti.password.width =  "25";
			} else if (digitalspaghetti.password.totalscore > digitalspaghetti.password.options.scores[0] && digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[1]) {
				digitalspaghetti.password.strColor = digitalspaghetti.password.options.colors[2];
				digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[2];
				digitalspaghetti.password.width =  "50";
			} else if (digitalspaghetti.password.totalscore > digitalspaghetti.password.options.scores[1] && digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[2]) {
				digitalspaghetti.password.strColor = digitalspaghetti.password.options.colors[3];
				digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[3];
				digitalspaghetti.password.width =  "75";
			} else {
				digitalspaghetti.password.strColor = digitalspaghetti.password.options.colors[4];
				digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[4];
				digitalspaghetti.password.width =  "100";
			}

			jQuery('.strength_bar_line')
			    .css({'display': 'block', 'background-color': digitalspaghetti.password.strColor, 'width': digitalspaghetti.password.width + "%"});
			jQuery('#pass_strength')
			    .css({'color': digitalspaghetti.password.strColor})
			    .text(digitalspaghetti.password.strText);
		}
	}
};

jQuery.extend(jQuery.fn, {
	'pstrength': function (options) {
		return this.each(function () {
			digitalspaghetti.password.init(this, options);
		});
	}
});
jQuery.extend(jQuery.fn.pstrength, {
	'addRule': function (name, method, score, active) {
		digitalspaghetti.password.addRule(name, method, score, active);
		return true;
	},
	'changeScore': function (rule, score) {
		digitalspaghetti.password.ruleScores[rule] = score;
		return true;
	},
	'ruleActive': function (rule, active) {
		digitalspaghetti.password.rules[rule] = active;
		return true;
	}
});