/*!
 * socket.io-node
 * Copyright(c) 2011 LearnBoost <dev@learnboost.com>
 * MIT Licensed
 */

/**
 * Expose the constructor.
 */

exports = module.exports = Store;

/**
 * Module dependencies.
 */

var EventEmitter = process.EventEmitter;

/**
 * Store interface
 *
 * @api public
 */

function Store( options ) {
	this.options = options;
	this.clients = {};
}
;

/**
 * Inherit from EventEmitter.
 */

Store.prototype.__proto__ = EventEmitter.prototype;

/**
 * Initializes a client store
 *
 * @param {String} id
 * @api public
 */

Store.prototype.client = function ( id ) {
	if ( !this.clients[id] ) {
		this.clients[id] = new (this.constructor.Client)( this, id );
	}

	return this.clients[id];
};

/**
 * Destroys a client
 *
 * @api {String} sid
 * @param {Number} number of seconds to expire client data
 * @api private
 */

Store.prototype.destroyClient = function ( id, expiration ) {
	if ( this.clients[id] ) {
		this.clients[id].destroy( expiration );
		delete this.clients[id];
	}

	return this;
};

/**
 * Destroys the store
 *
 * @param {Number} number of seconds to expire client data
 * @api private
 */

Store.prototype.destroy = function ( clientExpiration ) {
	var keys = Object.keys( this.clients )
		, count = keys.length;

	for ( var i = 0, l = count; i < l; i++ ) {
		this.destroyClient( keys[i], clientExpiration );
	}

	this.clients = {};

	return this;
};

/**
 * Client.
 *
 * @api public
 */

Store.Client = function ( store, id ) {
	this.store = store;
	this.id = id;
};