139 lines
2.9 KiB
JavaScript
139 lines
2.9 KiB
JavaScript
import error as popError from GUI.Screen;
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var wsLocation = window.location.origin.replace(/^http/, 'ws') + '/play/';
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var ws;
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var debug = getParameters().debug;
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var doLog = debug != undefined && debug.match(/^(?:1|t(?:rue)?|v(?:rai)?)$/i);
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var on = false;
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var s = 1000; /* ms */
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var keepAlivePeriod = 20;
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var reconnectDelay = 1;
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var routes = {callbacks: [], children: {}};
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var messagesQueue = [];
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var wsHandlers = {
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open: [function() {on = true; reconnectDelay = 1}, catchUp, ping],
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close: [function() {on = false;}, reconnect]
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};
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init();
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return {
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addEventListener: addEventListener,
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isOn: isOn,
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send: send
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};
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function get(obj, path, write) {
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write = write || false;
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if(path.length < 1) {
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return obj;
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} else {
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if(obj.children[path[0]] == undefined && write) {
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obj.children[path[0]] = {callbacks: [], children: {}};
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}
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if(obj.children[path[0]] != undefined) {
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return get(obj.children[path[0]], path.slice(1), write);
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} else {
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return null;
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}
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}
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}
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function getParameters() {
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var o = {};
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window.location.search.substr(1).split('&').forEach(function(s) {
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var t = s.split('=');
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o[t[0]] = t[1];
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});
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return o;
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}
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function addEventListener(path, callback) {
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if(Array.isArray(path)) {
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var route = get(routes, path, true);
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route.callbacks.push(callback);
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} else {
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if(wsHandlers[path] != undefined) {
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wsHandlers[path].push(callback);
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} else {
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log('Unsupported websocket event "' + path + '"');
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}
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}
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}
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function messageListener(event) {
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var o = JSON.parse(event.data);
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var path = [];
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var tmp = o;
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while(tmp != undefined && tmp.tag != undefined) {
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path.push(tmp.tag);
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tmp = tmp.message;
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}
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var route = get(routes, path);
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if(route != undefined && route.callbacks != undefined) {
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route.callbacks.forEach(function(f) {f(o);});
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} else {
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console.log("No route found for " + event.data);
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}
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o.direction = 'client < server';
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log(o);
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};
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function send(o) {
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if(isOn()) {
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ws.send(JSON.stringify(o));
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o.direction = 'client > server';
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log(o);
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} else {
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messagesQueue.push(o);
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}
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}
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function catchUp() {
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var messages = messagesQueue;
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messagesQueue = [];
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messagesQueue.forEach(send);
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}
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function log(message) {
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if(doLog) {
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console.log(message);
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}
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}
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function init() {
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connect();
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addEventListener(["Pong"], ping);
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addEventListener(["Error"], function(o) {popError(o.error);});
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}
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function connect() {
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ws = new WebSocket(window.location.origin.replace(/^http/, 'ws') + '/play/');
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ws.addEventListener('message', messageListener);
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ws.addEventListener('open', function(e) {
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wsHandlers.open.forEach(function(handler) {handler(e);});
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});
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ws.addEventListener('close', function(e) {
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wsHandlers.close.forEach(function(handler) {handler(e);});
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});
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}
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function reconnect() {
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setTimeout(connect, reconnectDelay * s);
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if(reconnectDelay < 16) {
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reconnectDelay *= 2;
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}
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}
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function isOn() {
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return on;
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}
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function ping() {
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setTimeout(function() {
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if(isOn()) {
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send({tag: "Ping"});
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}
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}, keepAlivePeriod * s);
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}
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