/* @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
 *
 * === Changelog ===
 * Version 2.1 (18/05/2008)
 * Added a jQuery method to add a new rule: jQuery('input[@type=password]').pstrength.addRule(name, method, score, active)
 * Added a jQuery method to change a rule score: jQuery('input[@type=password]').pstrength.changeScore('one_number', 50);
 * Added a jQuery method to change a rules active state: jQuery('input[@type=password]').pstrength.ruleActive('one_number', false);
 * Hide the 'password to short' span if the password is more than the min chars
 *
 * Version 2.0 (17/05/2008)
 * Completly re-wrote the plugin from scratch.  Plugin now features lamda functions for validation and
 * custom validation rules
 * Plugin now exists in new digitalspaghetti. namespace to stop any conflits with other plugins.
 * Updated documentation
 *
 * Version 1.4 (12/02/2008)
 * Added some improvments to i18n stuff from Raffael Luthiger.
 * Version 1.3 (02/01/2008)
 * Changing coding style to more OO
 * Added default messages object for i18n
 * Changed password length score to Math.pow (thanks to Keith Mashinter for this suggestion)
 * Version 1.2 (03/09/2007)
 * Added more options for colors and common words
 * Added common words checked to see if words like 'password' or 'qwerty' are being entered
 * Added minimum characters required for password
 * Re-worked scoring system to give better results
 * Version 1.1 (20/08/2007)
 * Changed code to be more jQuery-like
 * Version 1.0 (20/07/2007)
 * Initial version.
 */

// Create our namespaced object
/*global window */
/*global jQuery */
/*global digitalspaghetti*/
window.digitalspaghetti = window.digitalspaghetti || {};
digitalspaghetti.password = {
        'defaults' : {
                'displayMinChar': true,
                'minChar': 0,
                'minCharText': 'Мора бити 6 симбола',
                'colors': ["#f00", "#cc0000", "#f60", "#3c0", "#3f0"],
                'scores': [5, 30, 43, 50],
                'verdicts':        ['Скроз слабо', 'Слабо', 'Средње', 'Добро', 'Врло добро'],
                'raisePower': 1.7,
                '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">'];
                if (digitalspaghetti.password.options.displayMinChar && !digitalspaghetti.password.tooShort) {
                        output.push('<span class="password-min-char">' + digitalspaghetti.password.options.minCharText.replace('%d', digitalspaghetti.password.options.minChar) + '</span>');
                }
                output.push('<span class="password-strength-bar"></span>');
                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);
                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.totalscore <= digitalspaghetti.password.options.scores[0]) {
                                digitalspaghetti.password.strColor = digitalspaghetti.password.options.colors[0];
                                digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[0];
                                digitalspaghetti.password.width =  "1";
                        } 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[1];
                                digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[1];
                                digitalspaghetti.password.width =  "25";
                        } 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[2];
                                digitalspaghetti.password.strText = digitalspaghetti.password.options.verdicts[2];
                                digitalspaghetti.password.width =  "50";
                        } else if (digitalspaghetti.password.totalscore > digitalspaghetti.password.options.scores[2] && digitalspaghetti.password.totalscore <= digitalspaghetti.password.options.scores[3]) {
                                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 =  "99";
                        }
                        jQuery('.password-strength-bar').stop();

                        if (digitalspaghetti.password.options.displayMinChar && !digitalspaghetti.password.tooShort) {
                                jQuery('.password-min-char').hide();
                        } else {
                                jQuery('.password-min-char').show();
                        }

                        jQuery('.password-strength-bar').animate({opacity: 0.5}, 'fast', 'linear', function () {
                                jQuery(this).css({'display': 'block', 'background-color': digitalspaghetti.password.strColor, 'width': digitalspaghetti.password.width + "%"}).text(digitalspaghetti.password.strText);
                                jQuery(this).animate({opacity: 1}, 'fast', 'linear');
                        });
                }
        }
};

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;
        }
});