From a90d78213a5d6a3d4aa0e1fb86d27286c1863904 Mon Sep 17 00:00:00 2001
From: Danielv123 <tranen.bananen@gmail.com>
Date: Thu, 27 Oct 2016 22:41:25 +0200
Subject: [PATCH] Basic serverside slaveawareness

---
 client.js    | 36 ++++++++++++++++++++++++++++++++++++
 master.js    | 20 ++++++++++++++++++++
 package.json |  1 +
 3 files changed, 57 insertions(+)

diff --git a/client.js b/client.js
index 3ce1eb67..a7c8ee97 100644
--- a/client.js
+++ b/client.js
@@ -119,6 +119,7 @@ client.on('authenticated', function() {
 	console.log('Authenticated!');
 }).on('connected', function() {
 	console.log('Connected!');
+	getID();
 }).on('disconnected', function() {
 	console.log('Disconnected!');
 	// now reconnect
@@ -128,6 +129,29 @@ client.on('authenticated', function() {
 // set some globals
 confirmedOrders = [];
 lastSignalCheck = Date.now();
+
+// world IDs ------------------------------------------------------------------
+function getID() {
+	var payload = {
+		time : Date.now(),
+		rconPort : instanceconfig.clientPort,
+		rconPassword : instanceconfig.clientPassword,
+		serverPort : instanceconfig.factorioPort,
+		unique : instanceconfig.clientPassword.hashCode()
+	}
+	require('getmac').getMac(function(err,mac){
+		if (err) throw err
+		payload.mac = mac
+		console.log(payload)
+		needle.post(config.masterIP + ":" + config.masterPort + '/getID', payload, function(err, response, body){
+			if(response && response.body) {
+				// In the future we might be interested in whether or not we actually manage to send it, but honestly I don't care.
+				console.log(response.body)
+			}
+	}	);
+	})
+	
+}
 // provide items --------------------------------------------------------------
 // trigger when something happens to output.txt
 fs.watch(instancedirectory + "/script-output/output.txt", function(eventType, filename) {
@@ -258,3 +282,15 @@ setInterval(function() {
 		}
 	}
 }, 1000)
+
+// simple string hasher
+String.prototype.hashCode = function(){
+	var hash = 0;
+	if (this.length == 0) return hash;
+	for (i = 0; i < this.length; i++) {
+		char = this.charCodeAt(i);
+		hash = ((hash<<5)-hash)+char;
+		hash = hash & hash; // Convert to 32bit integer
+	}
+	return hash;
+}
diff --git a/master.js b/master.js
index 47fa55f7..55a86494 100644
--- a/master.js
+++ b/master.js
@@ -26,6 +26,7 @@ db = {};
 db.items = new Datastore({ filename: 'database/items.db', autoload: true });
 db.signals = new Datastore({ filename: 'database/signals.db', autoload: true, inMemoryOnly: true});
 db.signals.ensureIndex({ fieldName: 'time', expireAfterSeconds: 3600 }, function (err) {});
+// db.slaves = new Datastore({ filename: 'database/slaves.db', autoload: true, inMemoryOnly: false});
 
 db.items.additem = function(object) {
 	db.items.findOne({name:object.name}, function (err, doc) {
@@ -42,6 +43,25 @@ db.items.additem = function(object) {
 		}
 	})
 }
+var slaves = {}
+// world ID management
+app.post("/getID", function(req,res) {
+	// request.body should be an object
+	// {rconPort, rconPassword, serverPort, mac, time}
+	// time us a unix timestamp we can use to check for how long the server has been unresponsive
+	// we should save that somewhere and give appropriate response
+	if(req.body){
+		slaves[req.body.unique] = req.body
+		console.log("Slave: " + req.body.mac + " : " + req.body.serverPort)
+	}
+});
+
+// endpoint for getting information about all our slaves
+app.get("/slaves", function(req, res) {
+	res.header("Access-Control-Allow-Origin", "*");
+	res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
+	res.send(slaves)
+});
 
 // endpoint to send items to
 app.post("/place", function(req, res) {
diff --git a/package.json b/package.json
index 01b32f75..cb9a0d13 100644
--- a/package.json
+++ b/package.json
@@ -16,6 +16,7 @@
     "child_process": "^1.0.2",
     "express": "^4.14.0",
     "fs": "0.0.2",
+    "getmac": "^1.2.1",
     "mkdirp": "^0.5.1",
     "nedb": "^1.8.0",
     "needle": "^1.1.0",