emuboy/web/ipc.js

(function() {
	window.ipc = {};
	ipc.ongamestopped = null;
	ipc.ongamelist = null;
	ipc.onerror = null;

	var ws;
	var connected = false;
	function send(obj) {
		var msg = JSON.stringify(obj);

		if (!connected)
			return console.error(
				"Attempt to send message, but socket is closed.");

		console.log("Sending", msg);
		ws.send(msg);
	}

	ipc.init = (port, cb) => {
		console.log("Connecting...");
		ws = new WebSocket("ws://127.0.0.1:"+port);

		ws.onopen = () => {
			connected = true;
			console.log("Connected.");
			cb && cb();
		}

		ws.onmessage = msg => {
			console.log("Received", msg.data);
			var obj = JSON.parse(msg.data);

			switch (obj.cmd) {
			case "ongamestopped":
				return ipc.ongamestopped();

			case "ongamestart":
				return ipc.ongamestart();

			case "ongamelist":
				return ipc.ongamelist(obj.games);

			case "onerror":
				return ipc.onerror(obj.msg);

			default:
				console.error("Received unknown command:", obj.cmd);
			}
		}

		ws.onclose = () => {
			connected = false;
			console.log("Disconnected, retrying in 1 second...");
			setTimeout(ipc.init.bind(null, port, cb), 1000);
		}
	}

	ipc.run = name => {
		send({ cmd: "run", name: name });
	}
})();