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room-module.js
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room-module.js
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'use strict';
var SESSION_STATUS = require('./constants').SESSION_STATUS;
var STREAM_STATUS = require('./constants').STREAM_STATUS;
var Promise = require('promise-polyfill');
var util = require('./util');
var uuid = require('node-uuid');
var ROOM_REST_APP = "roomApp";
/**
* Room api based on core api
*
* @namespace roomApi
*/
/**
* Initialize connection
*
* @param {Object} options session options
* @param {String} options.urlServer Server address in form of [ws,wss]://host.domain:port
* @param {String} options.username Username to login with
* @returns {roomApi.Session}
* @memberof roomApi
* @method connect
*/
var appSession = function(options) {
/**
* Represents connection to room api app
*
* @namespace roomApi.Session
*/
var callbacks = {};
var rooms = {};
var username_ = options.username;
var exports;
var roomHandlers = {};
var session = Flashphoner.createSession({
urlServer: options.urlServer,
mediaOptions: options.mediaOptions,
appKey: ROOM_REST_APP,
custom: {
login: options.username
}
}).on(SESSION_STATUS.ESTABLISHED, function(session){
if (callbacks[session.status()]) {
callbacks[session.status()](exports);
}
}).on(SESSION_STATUS.APP_DATA, function(data){
if (roomHandlers[data.payload.roomName]) {
roomHandlers[data.payload.roomName](data.payload);
} else {
console.warn("Failed to find room");
}
}).on(SESSION_STATUS.DISCONNECTED, sessionDied).on(SESSION_STATUS.FAILED, sessionDied);
//teardown helper
function sessionDied(session) {
if (callbacks[session.status()]) {
callbacks[session.status()](exports);
}
}
/**
* Disconnect session
*
* @memberof roomApi.Session
* @inner
*/
var disconnect = function(){
session.disconnect();
};
/**
* Get session status
*
* @returns {string} One of {@link Flashphoner.constants.SESSION_STATUS}
* @memberof roomApi.Session
* @inner
*/
var status = function() {
return session.status();
};
/**
* Get session id
*
* @returns {string} session id
* @memberof roomApi.Session
* @inner
*/
var id = function() {
return session.id();
};
/**
* Get server address
*
* @returns {string} Server url
* @memberof roomApi.Session
* @inner
*/
var getServerUrl = function() {
return session.getServerUrl();
};
/**
* Get session username
*
* @returns {string} username
* @memberof roomApi.Session
* @inner
*/
var username = function() {
return username_;
};
/**
* Get rooms
*
* @returns {roomApi.Room[]}
* @memberof roomApi.Session
* @inner
*/
var getRooms = function(){
return util.copyObjectToArray(rooms);
};
/**
* Add session event callback.
*
* @param {string} event One of {@link Flashphoner.constants.SESSION_STATUS} events
* @param {Session~eventCallback} callback Callback function
* @returns {roomApi.Session} Session
* @throws {TypeError} Error if event is not specified
* @throws {Error} Error if callback is not a valid function
* @memberof roomApi.Session
* @inner
*/
var on = function(event, callback) {
if (!event) {
throw new Error("Event can't be null", "TypeError");
}
if (!callback || typeof callback !== 'function') {
throw new Error("Callback needs to be a valid function");
}
callbacks[event] = callback;
return exports;
};
/**
* Join room
*
* @param {Object} options Room options
* @param {String} options.name Room name
* @returns {roomApi.Room}
* @memberof roomApi.Session
* @inner
*/
var join = function(options) {
/**
* Room
*
* @namespace roomApi.Room
*/
var room = {};
var name_ = options.name;
var participants = {};
var callbacks = {};
var stateStreams = {};
roomHandlers[name_] = function(data) {
/**
* Room participant
*
* @namespace roomApi.Room.Participant
*/
var participant;
if (data.name == "STATE") {
if (data.info) {
for (var i = 0; i < data.info.length; i++) {
participantFromState(data.info[i]);
}
stateStreams = {};
}
if (callbacks["STATE"]) {
callbacks["STATE"](room);
}
} else if (data.name == "JOINED") {
participants[data.info] = {
streams: {},
name: function(){
return data.info;
},
sendMessage: attachSendMessage(data.info),
getStreams: function() { return util.copyObjectToArray(this.streams);}
};
if (callbacks["JOINED"]) {
callbacks["JOINED"](participants[data.info]);
}
} else if (data.name == "LEFT") {
participant = participants[data.info];
delete participants[data.info];
if (callbacks["LEFT"]) {
callbacks["LEFT"](participant);
}
} else if (data.name == "PUBLISHED") {
participant = participants[data.info.login];
participant.streams[data.info.name] = {
play: play(data.info.name),
stop: stop(data.info.name),
id: id(data.info.name),
streamName: function() {return data.info.name}
};
if (callbacks["PUBLISHED"]) {
callbacks["PUBLISHED"](participant);
}
} else if (data.name == "FAILED" || data.name == "UNPUBLISHED") {
participant = participants[data.info.login];
if (participant != null)
delete participant.streams[data.info.name];
} else if (data.name == "MESSAGE") {
if (callbacks["MESSAGE"]) {
callbacks["MESSAGE"]({
from: participants[data.info.from],
text: data.info.text
});
}
}
};
//participant creation helper
function participantFromState(state) {
var participant = {};
if (state.hasOwnProperty("login")) {
var login = state.login;
var streamName = state.name;
stateStreams[streamName] = {
/**
* Play participant stream
*
* @param {HTMLElement} display Div element stream should be displayed in
* @returns {Stream} Local stream object
* @memberof roomApi.Room.Participant.Stream
* @inner
*/
play: play(streamName),
/**
* Stop participant stream
*
* @memberof roomApi.Room.Participant.Stream
* @inner
*/
stop: stop(streamName),
/**
* Get participant stream id
*
* @returns {String} Stream id
* @memberof roomApi.Room.Participant.Stream
* @inner
*/
id: id(streamName),
/**
* Get participant stream name
*
* @returns {String} Stream name
* @memberof roomApi.Room.Participant.Stream
* @inner
*/
streamName: function(){return streamName}
};
participant = {
streams: {},
/**
* Get participant name
*
* @returns {String} Participant name
* @memberof roomApi.Room.Participant
* @inner
*/
name: function(){
return login;
},
/**
* Send message to participant
*
* @param {String} message Message to send
* @param {Function} error Error callback
* @memberof roomApi.Room.Participant
* @inner
*/
sendMessage: attachSendMessage(login),
/**
* Get participant streams
*
* @returns {Array<roomApi.Room.Participant.Stream>} Streams
* @memberof roomApi.Room.Participant
* @inner
*/
getStreams: function() { return util.copyObjectToArray(this.streams);}
};
/**
* Room participant
*
* @namespace roomApi.Room.Participant.Stream
*/
} else {
participant = {
streams: {},
name: function(){
return state;
},
sendMessage: attachSendMessage(state),
getStreams: function() {return util.copyObjectToArray(this.streams);}
}
}
if (Object.keys(stateStreams).length !=0 ) {
for (var k in stateStreams) {
if (stateStreams.hasOwnProperty(k)) {
participant.streams[k] = stateStreams[k];
delete stateStreams[k];
}
}
}
participants[participant.name()] = participant;
return participant;
}
/**
* Get room name
*
* @returns {String} Room name
* @memberof roomApi.Room
* @inner
*/
var name = function() {
return name_;
};
/**
* Leave room
*
* @returns {Promise<room>}
* @memberof roomApi.Room
* @inner
*/
var leave = function() {
return new Promise(function(resolve, reject){
sendAppCommand("leave", {name: name_}).then(function(){
cleanUp();
resolve(room);
}, function(){
cleanUp();
reject(room);
});
function cleanUp() {
//clear streams
var streams = session.getStreams();
for (var i = 0; i < streams.length; i++) {
if (streams[i].name().indexOf(name_ + "-" + username_) !== -1 && streams[i].status() != STREAM_STATUS.UNPUBLISHED) {
streams[i].stop();
} else if (streams[i].name().indexOf(name_) !== -1 && streams[i].status() != STREAM_STATUS.STOPPED) {
streams[i].stop();
}
}
delete roomHandlers[name_];
delete rooms[name_];
}
});
};
/**
* Publish stream inside room
*
* @param {Object} options Stream options
* @param {string=} options.name Stream name
* @param {Object=} options.constraints Stream constraints
* @param {Boolean=} options.record Enable stream recording
* @param {Boolean=} options.cacheLocalResources Display will contain local video after stream release
* @param {HTMLElement} options.display Div element stream should be displayed in
* @returns {Stream}
* @memberof roomApi.Room
* @inner
*/
var publish = function(options) {
options.name = (options.name) ? (name_ + "-" + username_ + "-" + uuid.v1().substr(0,4) + "-" + options.name) : (name_ + "-" + username_ + "-" + uuid.v1().substr(0,4));
options.cacheLocalResources = (typeof options.cacheLocalResources === "boolean") ? options.cacheLocalResources : true;
options.custom = {name: name_};
var stream = session.createStream(options);
stream.publish();
return stream;
};
/**
* Add room event callback.
*
* @param {string} event One of {@link roomApi.events} events
* @param {roomApi.Room~eventCallback} callback Callback function
* @returns {roomApi.Room} room
* @throws {TypeError} Error if event is not specified
* @throws {Error} Error if callback is not a valid function
* @memberof roomApi.Room
* @inner
*/
var on = function(event, callback) {
if (!event) {
throw new Error("Event can't be null", "TypeError");
}
if (!callback || typeof callback !== 'function') {
throw new Error("Callback needs to be a valid function");
}
callbacks[event] = callback;
return room;
};
/**
* Get participants
*
* @returns {roomApi.Room.Participant}
* @memberof roomApi.Room
* @inner
*/
var getParticipants = function() {
return util.copyObjectToArray(participants);
};
//participant helpers
function play(streamName) {
return function(display){
var stream = session.createStream({name: streamName, display: display, custom: {name: name_}});
stream.play();
return stream;
}
}
function stop(streamName) {
return function() {
var streams = session.getStreams();
for (var i = 0; i < streams.length; i++) {
if (streams[i].name() == streamName && streams[i].status() != STREAM_STATUS.UNPUBLISHED) {
streams[i].stop();
}
}
}
}
function id(streamName) {
return function() {
var streams = session.getStreams();
for (var i = 0; i < streams.length; i++) {
if (streams[i].name() == streamName)
return streams[i].id();
}
}
}
function attachSendMessage(recipientName) {
return function(text, error) {
var message = {
roomConfig: {
name: name_
},
to: recipientName,
text: text
};
sendAppCommand("sendMessage", message).then(function(){}, function(){
if (error) {
error();
}
});
}
}
//sendData helper
function sendAppCommand(commandName, data) {
var command = {
command: commandName,
options: data
};
return session.sendData(command);
}
sendAppCommand("join", {name: name_}).then(function(){}, function(info){
if (callbacks["FAILED"]) {
callbacks["FAILED"](room, info.info);
}
});
room.name = name;
room.leave = leave;
room.publish = publish;
room.getParticipants = getParticipants;
room.on = on;
rooms[name_] = room;
return room;
};
exports = {
disconnect: disconnect,
id: id,
getServerUrl: getServerUrl,
username: username,
status: status,
getRooms: getRooms,
join: join,
on: on
};
return exports;
};
var events = {
STATE: "STATE",
JOINED: "JOINED",
LEFT: "LEFT",
PUBLISHED: "PUBLISHED",
MESSAGE: "MESSAGE",
FAILED: "FAILED"
};
module.exports = {
connect: appSession,
events: events
};