// We make use of this 'server' variable to provide the address of the
// REST Janus API. By default, in this example we assume that Janus is
// co-located with the web server hosting the HTML pages but listening
// on a different port (8088, the default for HTTP in Janus), which is
// why we make use of the 'window.location.hostname' base address. Since
// Janus can also do HTTPS, and considering we don't really want to make
// use of HTTP for Janus if your demos are served on HTTPS, we also rely
// on the 'window.location.protocol' prefix to build the variable, in
// particular to also change the port used to contact Janus (8088 for
// HTTP and 8089 for HTTPS, if enabled).
// In case you place Janus behind an Apache frontend (as we did on the
// online demos at http://janus.conf.meetecho.com) you can just use a
// relative path for the variable, e.g.:
//
// 		var server = "/janus";
//
// which will take care of this on its own.
//
//
// If you want to use the WebSockets frontend to Janus, instead, you'll
// have to pass a different kind of address, e.g.:
//
// 		var server = "ws://" + window.location.hostname + ":8188";
//
// Of course this assumes that support for WebSockets has been built in
// when compiling the gateway. WebSockets support has not been tested
// as much as the REST API, so handle with care!
//
//
// If you have multiple options available, and want to let the library
// autodetect the best way to contact your gateway (or pool of gateways),
// you can also pass an array of servers, e.g., to provide alternative
// means of access (e.g., try WebSockets first and, if that fails, fall
// back to plain HTTP) or just have failover servers:
//
//		var server = [
//			"ws://" + window.location.hostname + ":8188",
//			"/janus"
//		];
//
// This will tell the library to try connecting to each of the servers
// in the presented order. The first working server will be used for
// the whole session.
//
//~ var server = null;
//~ if(window.location.protocol === 'http:')
	//~ server = "http://" + window.location.hostname + ":8088/janus";
//~ else
	//~ server = "https://" + window.location.hostname + ":8089/janus";
	
var server = "/janus";

var janus = null;
var streaming = null;
var started = false;
var spinner = null;

var selectedStream = null;


$(document).ready(function() {
	// Initialize the library (all console debuggers enabled)
	Janus.init({debug: "all", callback: function() {
		// Use a button to start the demo
		//~ $('#start').click(function() {
			if(started)
				return;
			started = true;
			$(this).attr('disabled', true).unbind('click');
			// Make sure the browser supports WebRTC
			if(!Janus.isWebrtcSupported()) {
				bootbox.alert("No WebRTC support... ");
				return;
			}
			// Create session
			janus = new Janus(
				{
					server: server,
					success: function() {
						// Attach to streaming plugin
						janus.attach(
							{
								plugin: "janus.plugin.streaming",
								success: function(pluginHandle) {
									//~ $('#details').remove();
									streaming = pluginHandle;
									Janus.log("Plugin attached! (" + streaming.getPlugin() + ", id=" + streaming.getId() + ")");
									// Setup streaming session
									$('#update-streams').click(updateStreamsList);
									updateStreamsList();
									//~ $('#start').removeAttr('disabled').html("Stop")
										//~ .click(function() {
											//~ $(this).attr('disabled', true);
											//~ janus.destroy();
											//~ $('#streamslist').attr('disabled', true);
											//~ $('#watch').attr('disabled', true).unbind('click');
											//~ $('#start').attr('disabled', true).html("Bye").unbind('click');
										//~ });
								},
								error: function(error) {
									Janus.error("  -- Error attaching plugin... ", error);
									bootbox.alert("Error attaching plugin... " + error);
								},
								onmessage: function(msg, jsep) {
									Janus.debug(" ::: Got a message :::");
									Janus.debug(JSON.stringify(msg));
									var result = msg["result"];
									if(result !== null && result !== undefined) {
										if(result["status"] !== undefined && result["status"] !== null) {
											var status = result["status"];
											if(status === 'starting')
												$('#status').removeClass('hide').text("Starting, please wait...").show();
											else if(status === 'started')
												$('#status').removeClass('hide').text("Started").show();
											else if(status === 'stopped')
												stopStream();
										}
									} else if(msg["error"] !== undefined && msg["error"] !== null) {
										bootbox.alert(msg["error"]);
										stopStream();
										return;
									}
									if(jsep !== undefined && jsep !== null) {
										Janus.debug("Handling SDP as well...");
										Janus.debug(jsep);
										// Answer
										streaming.createAnswer(
											{
												jsep: jsep,
												media: { audioSend: false, videoSend: false },	// We want recvonly audio/video
												success: function(jsep) {
													Janus.debug("Got SDP!");
													Janus.debug(jsep);
													var body = { "request": "start" };
													streaming.send({"message": body, "jsep": jsep});
													$('#watch').html("Stop").removeAttr('disabled').click(stopStream);
												},
												error: function(error) {
													Janus.error("WebRTC error:", error);
													bootbox.alert("WebRTC error... " + JSON.stringify(error));
												}
											});
									}
								},
								onremotestream: function(stream) {
									Janus.debug(" ::: Got a remote stream :::");
									Janus.debug(JSON.stringify(stream));
									if($('#remotevideo').length === 0)
										$('#stream').append('<video class="centered hide" id="remotevideo" width=640 height=480 autoplay/>');
									// Show the stream and hide the spinner when we get a playing event
									$("#remotevideo").bind("playing", function () {
										$('#waitingvideo').remove();
										$('#remotevideo').removeClass('hide');
										if(spinner !== null && spinner !== undefined)
											spinner.stop();
										spinner = null;
									});
									Janus.attachMediaStream($('#remotevideo').get(0), stream);
								},
								oncleanup: function() {
									Janus.log(" ::: Got a cleanup notification :::");
									$('#waitingvideo').remove();
									$('#remotevideo').remove();
								}
							});
					},
					error: function(error) {
						Janus.error(error);
						bootbox.alert(error, function() {
							window.location.reload();
						});
					},
					destroyed: function() {
						window.location.reload();
					}
				});
		//~ });
	}});
});

function updateStreamsList() {
	$('#update-streams').unbind('click').addClass('fa-spin');
	var body = { "request": "list" };
	Janus.debug("Sending message (" + JSON.stringify(body) + ")");
	streaming.send({"message": body, success: function(result) {
		setTimeout(function() {
			$('#update-streams').removeClass('fa-spin').click(updateStreamsList);
		}, 500);
		if(result === null || result === undefined) {
			bootbox.alert("Got no response to our query for available streams");
			return;
		}
		if(result["list"] !== undefined && result["list"] !== null) {
			//~ $('#streams').removeClass('hide').show();
			$('#streamslist').empty();
			$('#watch').attr('disabled', true).unbind('click');
			var list = result["list"];
			Janus.log("Got a list of available streams");
			Janus.debug(list);
			for(var mp in list) {
				Janus.debug("  >> [" + list[mp]["id"] + "] " + list[mp]["description"] + " (" + list[mp]["type"] + ")");
				$('#streamslist').append("<li><a href='#' id='" + list[mp]["id"] + "'>" + list[mp]["description"] + " (" + list[mp]["type"] + ")" + "</a></li>");
			}
			$('#streamslist a').unbind('click').click(function() {
				selectedStream = $(this).attr("id");
				$('#streamset').html($(this).html()).parent().removeClass('open');
				return false;

			});
			$('#watch').removeAttr('disabled').click(startStream);
		}
	}});
}

function startStream() {
	Janus.log("Selected video id #" + selectedStream);
	if(selectedStream === undefined || selectedStream === null) {
		bootbox.alert("Select a stream from the list");
		return;
	}
	$('#streamset').attr('disabled', true);
	$('#streamslist').attr('disabled', true);
	$('#watch').attr('disabled', true).unbind('click');
	var body = { "request": "watch", id: parseInt(selectedStream) };
	streaming.send({"message": body});
	// No remote video yet
	$('#stream').append('<video class="centered" id="waitingvideo" width=640 height=480 />');
	if(spinner == null) {
		var target = document.getElementById('stream');
		spinner = new Spinner({top:100}).spin(target);
	} else {
		spinner.spin();
	}
}

function stopStream() {
	$('#watch').attr('disabled', true).unbind('click');
	var body = { "request": "stop" };
	streaming.send({"message": body});
	streaming.hangup();
	$('#streamset').removeAttr('disabled');
	$('#streamslist').removeAttr('disabled');
	$('#watch').html("Start").removeAttr('disabled').click(startStream);
	$('#status').empty().hide();
}