/*

 * Cookies.js - 1.1.0

 * https://github.com/ScottHamper/Cookies

 *

 * This is free and unencumbered software released into the public domain.

 */

(function (global, undefined) {

    'use strict';



    var factory = function (window) {

        if (typeof window.document !== 'object') {

            throw new Error('Cookies.js requires a `window` with a `document` object');

        }



        var Cookies = function (key, value, options) {

            return arguments.length === 1 ?

                Cookies.get(key) : Cookies.set(key, value, options);

        };



        // Allows for setter injection in unit tests

        Cookies._document = window.document;



        // Used to ensure cookie keys do not collide with

        // built-in `Object` properties

        Cookies._cacheKeyPrefix = 'cookey.'; // Hurr hurr, :)



        Cookies.defaults = {

            path: '/',

            secure: false

        };



        Cookies.get = function (key) {

            if (Cookies._cachedDocumentCookie !== Cookies._document.cookie) {

                Cookies._renewCache();

            }



            return Cookies._cache[Cookies._cacheKeyPrefix + key];

        };



        Cookies.set = function (key, value, options) {

            options = Cookies._getExtendedOptions(options);

            options.expires = Cookies._getExpiresDate(value === undefined ? -1 : options.expires);



            Cookies._document.cookie = Cookies._generateCookieString(key, value, options);



            return Cookies;

        };



        Cookies.expire = function (key, options) {

            return Cookies.set(key, undefined, options);

        };



        Cookies._getExtendedOptions = function (options) {

            return {

                path: options && options.path || Cookies.defaults.path,

                domain: options && options.domain || Cookies.defaults.domain,

                expires: options && options.expires || Cookies.defaults.expires,

                secure: options && options.secure !== undefined ?  options.secure : Cookies.defaults.secure

            };

        };



        Cookies._isValidDate = function (date) {

            return Object.prototype.toString.call(date) === '[object Date]' && !isNaN(date.getTime());

        };



        Cookies._getExpiresDate = function (expires, now) {

            now = now || new Date();

            switch (typeof expires) {

                case 'number': expires = new Date(now.getTime() + expires * 1000); break;

                case 'string': expires = new Date(expires); break;

            }



            if (expires && !Cookies._isValidDate(expires)) {

                throw new Error('`expires` parameter cannot be converted to a valid Date instance');

            }



            return expires;

        };



        Cookies._generateCookieString = function (key, value, options) {

            key = key.replace(/[^#$&+\^`|]/g, encodeURIComponent);

            key = key.replace(/\(/g, '%28').replace(/\)/g, '%29');

            value = (value + '').replace(/[^!#$&-+\--:<-\[\]-~]/g, encodeURIComponent);

            options = options || {};



            var cookieString = key + '=' + value;

            cookieString += options.path ? ';path=' + options.path : '';

            cookieString += options.domain ? ';domain=' + options.domain : '';

            cookieString += options.expires ? ';expires=' + options.expires.toUTCString() : '';

            cookieString += options.secure ? ';secure' : '';



            return cookieString;

        };



        Cookies._getCacheFromString = function (documentCookie) {

            var cookieCache = {};

            var cookiesArray = documentCookie ? documentCookie.split('; ') : [];



            for (var i = 0; i < cookiesArray.length; i++) {

                var cookieKvp = Cookies._getKeyValuePairFromCookieString(cookiesArray[i]);



                if (cookieCache[Cookies._cacheKeyPrefix + cookieKvp.key] === undefined) {

                    cookieCache[Cookies._cacheKeyPrefix + cookieKvp.key] = cookieKvp.value;

                }

            }



            return cookieCache;

        };



        Cookies._getKeyValuePairFromCookieString = function (cookieString) {

            // "=" is a valid character in a cookie value according to RFC6265, so cannot `split('=')`

            var separatorIndex = cookieString.indexOf('=');



            // IE omits the "=" when the cookie value is an empty string

            separatorIndex = separatorIndex < 0 ? cookieString.length : separatorIndex;



            return {

                key: decodeURIComponent(cookieString.substr(0, separatorIndex)),

                value: decodeURIComponent(cookieString.substr(separatorIndex + 1))

            };

        };



        Cookies._renewCache = function () {

            Cookies._cache = Cookies._getCacheFromString(Cookies._document.cookie);

            Cookies._cachedDocumentCookie = Cookies._document.cookie;

        };



        Cookies._areEnabled = function () {

            var testKey = 'cookies.js';

            var areEnabled = Cookies.set(testKey, 1).get(testKey) === '1';

            Cookies.expire(testKey);

            return areEnabled;

        };



        Cookies.enabled = Cookies._areEnabled();



        return Cookies;

    };



    var cookiesExport = typeof global.document === 'object' ? factory(global) : factory;



    // AMD support

    if (typeof define === 'function' && define.amd) {

        define(function () { return cookiesExport; });

    // CommonJS/Node.js support

    } else if (typeof exports === 'object') {

        // Support Node.js specific `module.exports` (which can be a function)

        if (typeof module === 'object' && typeof module.exports === 'object') {

            exports = module.exports = cookiesExport;

        }

        // But always support CommonJS module 1.1.1 spec (`exports` cannot be a function)

        exports.Cookies = cookiesExport;

    } else {

        global.Cookies = cookiesExport;

    }

})(typeof window === 'undefined' ? this : window);