Use a settings file instead of cfg.json. Cfg.json becomes hardcoded.

app/data/cfg.json.default

@@ -1,50 +0,0 @@
-{
-	"version" : "2.0.0",
-	"ext_port" : 1111,
-	"arduino" : {
-		"baud" : 57600,
-		"board" : "uno",
-		"serialDelay" : 20,
-		"sequenceDelay" : 100,
-		"cam" : {
-			"time" : 750,
-			"delay" : 50,
-			"momentary" : 300
-		},
-		"proj" : {
-			"time" : 1300,
-			"delay" : 50,
-			"momentary" : 300
-		},
-		"black" : {
-			"before" : 250,
-			"after" : 250
-		},
-		"cmd" : {
-			"debug" : "d",
-			"connect":  "i",
-			"light" : "l",
-
-			"camera" : "c",
-			"projector" : "p",
-			"black" : "b",
-
-			"cam_forward" : "e",
-			"cam_backward" : "f",
-			"cam_timed" : "n",
-
-			"proj_forward" : "g",
-			"proj_backward" : "h",
-
-			"mcopy_identifier" : "m",
-
-			"proj_identifier" : "j",
-			"cam_identifier" : "k",
-			"light_identifier" : "o",
-
-			"proj_light_identifier" : "q",
-			"proj_cam_light_identifier" : "r",
-			"proj_cam_identifier" : "s"
-		}
-	}
-}

app/lib/settings-ui.js

@@ -1,19 +0,0 @@
-'use strict'
-
-const os = require('os');
-const fs = require('fs');
-const settings = {};
-
-settings.file = `${os.homedir()}/.mcopy/settings.json`;
-settings.state = {
-	camera : {},
-	projector : {},
-	light : {}
-}
-
-settings.save = function () {
-	const str = JSON.stringify(settings.state, null, '\t');
-	fs.writeFile(settings.file, str, 'utf8', (err) => {
-		if (err) console.error(err);
-	});
-}

app/lib/settings/index.js

@@ -0,0 +1,52 @@
+'use strict'
+
+const os = require('os');
+const path = require('path');
+const fs = require('fs');
+const settings = {};
+
+settings.file = path.join(os.homedir(), `/.mcopy/settings.json`);
+settings.state = {
+	server : {
+		port : 1111,
+		enabled : true
+	},
+	camera : {},
+	projector : {},
+	light : {}
+}
+
+settings.checkDir = function () {
+	const dir = path.join(os.homedir(), '.mcopy/')
+	if (!fs.existsSync(dir)) {
+		fs.mkdirSync(dir);
+	}
+}
+
+settings.save = function () {
+	const str = JSON.stringify(settings.state, null, '\t');
+	settings.checkDir()
+	fs.writeFile(settings.file, str, 'utf8', (err) => {
+		if (err) console.error(err);
+	})
+}
+settings.update = function (key, val) {
+	settings.state[key] = val
+}
+
+settings.get = function (key) {
+	return settings.state[key]
+}
+
+settings.restore = function () {
+	let str
+	settings.checkDir()
+	if (fs.existsSync(settings.file)) {
+		str = fs.readFileSync(settings.file, 'utf8')
+		settings.state = JSON.parse(str)
+	} else {
+		settings.save()
+	}
+}
+
+module.exports = settings