+
+/*!
+ * Connect - session - Session
+ * Copyright(c) 2010 Sencha Inc.
+ * Copyright(c) 2011 TJ Holowaychuk
+ * MIT Licensed
+ */
+
+/**
+ * Module dependencies.
+ */
+
+var utils = require('../../utils')
+ , Cookie = require('./cookie');
+
+/**
+ * Create a new `Session` with the given request and `data`.
+ *
+ * @param {IncomingRequest} req
+ * @param {Object} data
+ * @api private
+ */
+
+var Session = module.exports = function Session(req, data) {
+ Object.defineProperty(this, 'req', { value: req });
+ Object.defineProperty(this, 'id', { value: req.sessionID });
+ if ('object' == typeof data) {
+ utils.merge(this, data);
+ } else {
+ this.lastAccess = Date.now();
+ }
+};
+
+/**
+ * Update `.lastAccess` timestamp,
+ * and reset `.cookie.maxAge` to prevent
+ * the cookie from expiring when the
+ * session is still active.
+ *
+ * @return {Session} for chaining
+ * @api public
+ */
+
+Session.prototype.touch = function(){
+ return this
+ .resetLastAccess()
+ .resetMaxAge();
+};
+
+/**
+ * Update `.lastAccess` timestamp.
+ *
+ * @return {Session} for chaining
+ * @api public
+ */
+
+Session.prototype.resetLastAccess = function(){
+ this.lastAccess = Date.now();
+ return this;
+};
+
+/**
+ * Reset `.maxAge` to `.originalMaxAge`.
+ *
+ * @return {Session} for chaining
+ * @api public
+ */
+
+Session.prototype.resetMaxAge = function(){
+ this.cookie.maxAge = this.cookie.originalMaxAge;
+ return this;
+};
+
+/**
+ * Save the session data with optional callback `fn(err)`.
+ *
+ * @param {Function} fn
+ * @return {Session} for chaining
+ * @api public
+ */
+
+Session.prototype.save = function(fn){
+ this.req.sessionStore.set(this.id, this, fn || function(){});
+ return this;
+};
+
+/**
+ * Re-loads the session data _without_ altering
+ * the maxAge or lastAccess properties. Invokes the
+ * callback `fn(err)`, after which time if no exception
+ * has occurred the `req.session` property will be
+ * a new `Session` object, although representing the
+ * same session.
+ *
+ * @param {Function} fn
+ * @return {Session} for chaining
+ * @api public
+ */
+
+Session.prototype.reload = function(fn){
+ var req = this.req
+ , store = this.req.sessionStore;
+ store.get(this.id, function(err, sess){
+ if (err) return fn(err);
+ if (!sess) return fn(new Error('failed to load session'));
+ store.createSession(req, sess);
+ fn();
+ });
+ return this;
+};
+
+/**
+ * Destroy `this` session.
+ *
+ * @param {Function} fn
+ * @return {Session} for chaining
+ * @api public
+ */
+
+Session.prototype.destroy = function(fn){
+ delete this.req.session;
+ this.req.sessionStore.destroy(this.id, fn);
+ return this;
+};
+
+/**
+ * Regenerate this request's session.
+ *
+ * @param {Function} fn
+ * @return {Session} for chaining
+ * @api public
+ */
+
+Session.prototype.regenerate = function(fn){
+ this.req.sessionStore.regenerate(this.req, fn);
+ return this;
+};