2 files changed, 85 insertions, 5 deletions

diff --git a/src/modules/mods.js b/src/modules/mods.js
index 9aa2c81..22865c2 100644
--- a/src/modules/mods.js
+++ b/src/modules/mods.js
@@ -6,6 +6,7 @@ const { app, ipcMain } = require("electron");
 const { https } = require("follow-redirects");
 
 const json = require("./json");
+const version = require("./version");
 const settings = require("./settings");
 
 const cli = require("../cli");
@@ -29,7 +30,7 @@ function update_path() {
 mods.list = () => {
 	update_path();
 
-	if (utils.getNSVersion() == "unknown") {
+	if (version.northstar() == "unknown") {
 		utils.winLog(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
@@ -106,7 +107,7 @@ mods.list = () => {
 mods.get = (mod) => {
 	update_path();
 
-	if (utils.getNSVersion() == "unknown") {
+	if (version.northstar() == "unknown") {
 		utils.winLog(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
@@ -221,7 +222,7 @@ mods.install = (mod, opts) => {
 		mods.dupe_msg_sent = false;
 	}
 
-	if (utils.getNSVersion() == "unknown") {
+	if (version.northstar() == "unknown") {
 		utils.winLog(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
@@ -462,7 +463,7 @@ mods.installFromURL = (url, author) => {
 mods.remove = (mod) => {
 	update_path();
 
-	if (utils.getNSVersion() == "unknown") {
+	if (version.northstar() == "unknown") {
 		utils.winLog(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
@@ -523,7 +524,7 @@ mods.remove = (mod) => {
 mods.toggle = (mod, fork) => {
 	update_path();
 
-	if (utils.getNSVersion() == "unknown") {
+	if (version.northstar() == "unknown") {
 		utils.winLog(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
diff --git a/src/modules/version.js b/src/modules/version.js
new file mode 100644
index 0000000..73e7bed
--- /dev/null
+++ b/src/modules/version.js
@@ -0,0 +1,79 @@
+const path = require("path");
+const fs = require("fs-extra");
+
+const json = require("./json");
+const settings = require("./settings");
+
+let version = {};
+
+// Returns the current Northstar version
+// If not installed it'll return "unknown"
+version.northstar = () => {
+	// if NorthstarLauncher.exe doesn't exist, always return "unknown"
+	if (! fs.existsSync(path.join(settings.gamepath, "NorthstarLauncher.exe"))) {
+		return "unknown";
+	}
+
+	// mods to check version of
+	var versionFiles = [
+		"Northstar.Client",
+		"Northstar.Custom",
+		"Northstar.CustomServers"
+	]
+
+	var versions = [];
+
+
+	let add = (version) => {
+		versions.push(version)
+	}
+
+	// checks version of mods
+	for (let i = 0; i < versionFiles.length; i++) {
+		var versionFile = path.join(settings.gamepath, "R2Northstar/mods/", versionFiles[i],"/mod.json");
+		if (fs.existsSync(versionFile)) {
+			if (! fs.statSync(versionFile).isFile()) {
+				add("unknown");
+			}
+
+			try {
+				add("v" + json(versionFile).Version);
+			}catch(err) {
+				add("unknown");
+			}
+		} else {
+			add("unknown");
+		}
+	}
+
+	if (versions.includes("unknown")) {return "unknown"}
+
+	// verifies all mods have the same version number
+	let mismatch = false;
+	let baseVersion = versions[0];
+	for (let i = 0; i < versions.length; i++) {
+		if (versions[i] != baseVersion) {
+			mismatch = true;
+			break
+		}
+	}
+
+	if (mismatch) {return "unknown"}
+	return baseVersion;
+}
+
+// Returns the Titanfall 2 version from gameversion.txt file.
+// If it fails it simply returns "unknown"
+//
+// TODO: This file is present on Origin install, should check if it's
+// present with Steam install as well.
+version.titanfall = () => {
+	var versionFilePath = path.join(settings.gamepath, "gameversion.txt");
+	if (fs.existsSync(versionFilePath)) {
+		return fs.readFileSync(versionFilePath, "utf8");
+	} else {
+		return "unknown";
+	}
+}
+
+module.exports = version;