modularized many functions and got rid of utils.js

Notably, winLog() and winAlert() are now win.log() and win.alert()
inside modules/window.js.

updateViper(), updateNorthstar and handleNorthstarUpdating() are now
update.viper(), update.northstar() and update.northstar_autoupdate(),
inside modules/update.js

isGameRunning() and isOriginRunning() are now is_running.origin() and
is_running.game() inside modules/is_running.js, along with a
.titanfall() and .northstar() for more specificity. Not used anywhere
right now, but may in the future be used.

setpath() and gamepathExists() are now gamepath.set() and
gamepath.exists() inside modules/gamepath.js

killOrigin() are now kill.origin() inside modules/kill.js

setlang() is now just inlined into the only event where it's used.

7 files changed, 477 insertions, 10 deletions

diff --git a/src/modules/gamepath.js b/src/modules/gamepath.js
new file mode 100644
index 0000000..93290ec
--- /dev/null
+++ b/src/modules/gamepath.js
@@ -0,0 +1,86 @@
+const path = require("path");
+const fs = require("fs-extra");
+
+const { dialog, ipcMain } = require("electron");
+
+const cli = require("../cli");
+
+const settings = require("./settings");
+
+let gamepath = {};
+
+// Returns true/false depending on if the gamepath currently exists/is
+// mounted, used to avoid issues...
+gamepath.exists = () => {
+	return fs.existsSync(settings.gamepath);
+}
+
+// Requests to set the game path
+//
+// If running with CLI it takes in the --setpath argument otherwise it
+// open the systems file browser for the user to select a path.
+gamepath.set = async (win, forcedialog) => {
+	function set_gamepath(folder) {
+		settings.gamepath = folder;
+		settings.zip = path.join(settings.gamepath + "/northstar.zip");
+		settings.save();
+		win.webContents.send("newpath", settings.gamepath);
+		ipcMain.emit("newpath", null, settings.gamepath);
+
+		modpath = path.join(settings.gamepath, "R2Northstar/mods");
+	}
+
+	if (! win) { // CLI
+		set_gamepath(cli.param("setpath"));
+	} else { // GUI
+		if (! forcedialog) {
+			function set_gamepath(folder, forcedialog) {
+				settings.gamepath = folder;
+				settings.zip = path.join(settings.gamepath + "/northstar.zip");
+				settings.save();
+				win.webContents.send("newpath", settings.gamepath);
+				ipcMain.emit("newpath", null, settings.gamepath);
+			}
+
+			let gamepath = await findgame();
+			if (gamepath) {
+				set_gamepath(gamepath);
+				return;
+			}
+
+			win.alert(lang("general.missingpath"));
+		}
+
+		// Fallback to manual selection
+		dialog.showOpenDialog({properties: ["openDirectory"]}).then(res => {
+			if (res.canceled) {
+				ipcMain.emit("newpath", null, false);
+				return;
+			}
+			if (! fs.existsSync(path.join(res.filePaths[0], "Titanfall2.exe"))) {
+				ipcMain.emit("wrong-path");
+				return;
+			}
+
+			set_gamepath(res.filePaths[0]);
+
+			cli.exit();
+			return;
+		}).catch(err => {console.error(err)})
+	}
+}
+
+// periodically check for the gamepath still existing
+setInterval(() => {
+	if (gamepath.exists()) {
+		ipcMain.emit("gui-getmods");
+	} else {
+		if (fs.existsSync("viper.json")) {
+			if (settings.gamepath != "") {
+				ipcMain.emit("gamepath-lost");
+			}
+		}
+	}
+}, 1500)
+
+module.exports = gamepath;
diff --git a/src/modules/is_running.js b/src/modules/is_running.js
new file mode 100644
index 0000000..cc91ded
--- /dev/null
+++ b/src/modules/is_running.js
@@ -0,0 +1,66 @@
+const exec = require("child_process").exec;
+
+let is_running = {};
+
+// a simple function that checks whether any of a given set of process
+// names are running, you can either input a string or an Array of
+// strings
+async function check_processes(processes) {
+	if (typeof processes == "string") {
+		processes = [processes];
+	}
+
+	return new Promise(resolve => {
+		if (! Array.isArray(processes)) {
+			reject(false);
+		}
+
+		// While we could use a Node module to do this instead, I
+		// decided not to do so. As this achieves exactly the same
+		// thing. And it's not much more clunky.
+		let cmd = (() => {
+			switch (process.platform) {
+				case "linux": return "ps -A";
+				case "win32": return "tasklist";
+			}
+		})();
+
+		exec(cmd, (err, stdout) => {
+			for (let i = 0; i < processes.length; i++) {
+				if (stdout.includes(processes[i])) {
+					resolve(true);
+					break
+				}
+
+				if (i == processes.length - 1) {resolve(false)}
+			}
+		});
+	});
+}
+
+is_running.game = async () => {
+	return await check_processes([
+		"NorthstarLauncher.exe",
+		"Titanfall2.exe", "Titanfall2-unpacked.exe"
+	])
+}
+
+is_running.origin = async () => {
+	return await check_processes([
+		"Origin.exe",
+	])
+}
+
+is_running.titanfall = async () => {
+	return await check_processes([
+		"Titanfall2.exe", "Titanfall2-unpacked.exe"
+	])
+}
+
+is_running.northstar = async () => {
+	return await check_processes([
+		"NorthstarLauncher.exe",
+	])
+}
+
+module.exports = is_running;
diff --git a/src/modules/kill.js b/src/modules/kill.js
new file mode 100644
index 0000000..7482bed
--- /dev/null
+++ b/src/modules/kill.js
@@ -0,0 +1,27 @@
+const exec = require("child_process").exec;
+
+// a simple function to kill processes with a certain name
+async function kill(process_name) {
+	return new Promise(resolve => {
+		let proc = process_name;
+		let cmd = (() => {
+			switch (process.platform) {
+				case "linux": return "killall " + proc;
+				case "win32": return "taskkill /IM " + proc + " /F";
+			}
+		})();
+
+		exec(cmd, (err, stdout) => {
+			// just try and fail silently if we don't find it w/e
+			resolve(true);
+		});
+	});
+}
+
+kill.process = kill;
+
+kill.origin = () => {
+	return kill("Origin.exe");
+}
+
+module.exports = kill;
diff --git a/src/modules/launch.js b/src/modules/launch.js
new file mode 100644
index 0000000..765c348
--- /dev/null
+++ b/src/modules/launch.js
@@ -0,0 +1,34 @@
+const exec = require("child_process").exec;
+
+const cli = require("../cli");
+const lang = require("../lang");
+
+const win = require("./window");
+const settings = require("./settings");
+
+// Launches the game
+//
+// Either Northstar or Vanilla. Linux support is not currently a thing,
+// however it'll be added at some point.
+function launch(game_version) {
+	if (process.platform == "linux") {
+		win.alert(lang("cli.launch.linuxerror"));
+		console.error("error:", lang("cli.launch.linuxerror"));
+		cli.exit(1);
+		return;
+	}
+
+	process.chdir(settings.gamepath);
+	switch(game_version) {
+		case "vanilla":
+			console.log(lang("general.launching"), "Vanilla...");
+			exec("Titanfall2.exe", {cwd: settings.gamepath});
+			break;
+		default:
+			console.log(lang("general.launching"), "Northstar...");
+			exec("NorthstarLauncher.exe", {cwd: settings.gamepath});
+			break;
+	}
+}
+
+module.exports = launch;
diff --git a/src/modules/mods.js b/src/modules/mods.js
index 22865c2..6abed96 100644
--- a/src/modules/mods.js
+++ b/src/modules/mods.js
@@ -6,12 +6,12 @@ const { app, ipcMain } = require("electron");
 const { https } = require("follow-redirects");
 
 const json = require("./json");
+const win = require("./window");
 const version = require("./version");
 const settings = require("./settings");
 
 const cli = require("../cli");
 const lang = require("../lang");
-const utils = require("../utils");
 
 var mods = {
 	installing: [],
@@ -31,7 +31,7 @@ mods.list = () => {
 	update_path();
 
 	if (version.northstar() == "unknown") {
-		utils.winLog(lang("general.notinstalled"));
+		win.log(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
 		return false;
@@ -108,7 +108,7 @@ mods.get = (mod) => {
 	update_path();
 
 	if (version.northstar() == "unknown") {
-		utils.winLog(lang("general.notinstalled"));
+		win.log(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
 		return false;
@@ -223,14 +223,14 @@ mods.install = (mod, opts) => {
 	}
 
 	if (version.northstar() == "unknown") {
-		utils.winLog(lang("general.notinstalled"));
+		win.log(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
 		return false;
 	}
 
 	let notamod = () => {
-		utils.winLog(lang("gui.mods.notamod"));
+		win.log(lang("gui.mods.notamod"));
 		console.log("error: " + lang("cli.mods.notamod"));
 		cli.exit(1);
 		return false;
@@ -240,7 +240,7 @@ mods.install = (mod, opts) => {
 		console.log(lang("cli.mods.installed"));
 		cli.exit();
 
-		utils.winLog(lang("gui.mods.installedmod"));
+		win.log(lang("gui.mods.installedmod"));
 
 		if (modname == "mods") {
 			let manifest = path.join(app.getPath("userData"), "Archives/manifest.json");
@@ -262,7 +262,7 @@ mods.install = (mod, opts) => {
 	if (! fs.existsSync(mod)) {return notamod()}
 
 	if (fs.statSync(mod).isDirectory()) {
-		utils.winLog(lang("gui.mods.installing"));
+		win.log(lang("gui.mods.installing"));
 		files = fs.readdirSync(mod);
 		if (fs.existsSync(path.join(mod, "mod.json")) &&
 			fs.statSync(path.join(mod, "mod.json")).isFile()) {
@@ -351,7 +351,7 @@ mods.install = (mod, opts) => {
 			return notamod();
 		}
 	} else {
-		utils.winLog(lang("gui.mods.extracting"));
+		win.log(lang("gui.mods.extracting"));
 		let cache = path.join(app.getPath("userData"), "Archives");
 		if (fs.existsSync(cache)) {
 			fs.rmSync(cache, {recursive: true});
@@ -464,7 +464,7 @@ mods.remove = (mod) => {
 	update_path();
 
 	if (version.northstar() == "unknown") {
-		utils.winLog(lang("general.notinstalled"));
+		win.log(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
 		return false;
@@ -525,7 +525,7 @@ mods.toggle = (mod, fork) => {
 	update_path();
 
 	if (version.northstar() == "unknown") {
-		utils.winLog(lang("general.notinstalled"));
+		win.log(lang("general.notinstalled"));
 		console.log("error: " + lang("general.notinstalled"));
 		cli.exit(1);
 		return false;
diff --git a/src/modules/update.js b/src/modules/update.js
new file mode 100644
index 0000000..cfdb42b
--- /dev/null
+++ b/src/modules/update.js
@@ -0,0 +1,239 @@
+const path = require("path");
+const fs = require("fs-extra");
+const { ipcMain, Notification } = require("electron");
+
+const cli = require("../cli");
+const lang = require("../lang");
+
+const win = require("./window");
+const version = require("./version");
+const settings = require("./settings");
+const requests = require("./requests");
+const gamepath = require("./gamepath");
+const is_running = require("./is_running");
+
+const unzip = require("unzipper");
+const { https } = require("follow-redirects");
+
+let update = {};
+
+// renames excluded files to their original name
+function restore_excluded_files() {
+	if (! gamepath.exists()) {return}
+
+	for (let i = 0; i < settings.excludes.length; i++) {
+		let exclude = path.join(settings.gamepath + "/" + settings.excludes[i]);
+		if (fs.existsSync(exclude + ".excluded")) {
+			fs.renameSync(exclude + ".excluded", exclude);
+		}
+	}
+}; restore_excluded_files();
+
+// renames excluded files to <file>.excluded, the list of files to be
+// exluded is set in the settings (settings.excludes)
+function exclude_files() {
+	for (let i = 0; i < settings.excludes.length; i++) {
+		let exclude = path.join(settings.gamepath + "/" + settings.excludes[i]);
+		if (fs.existsSync(exclude)) {
+			fs.renameSync(exclude, exclude + ".excluded");
+		}
+	}
+}
+
+// whether update.northstar_auto_update() has already been run before
+let is_auto_updating = false;
+
+// Handles auto updating Northstar.
+//
+// It uses isGameRunning() to ensure it doesn't run while the game is
+// running, as that may have all kinds of issues.
+update.northstar_autoupdate = () => {
+	if (! settings.nsupdate || ! fs.existsSync("viper.json") || settings.gamepath.length === 0) {
+		return;
+	}
+
+	if (is_auto_updating) {return}
+
+	async function _checkForUpdates() {
+		is_auto_updating = true;
+
+		console.log(lang("cli.autoupdates.checking"));
+
+		// Checks if NS is outdated
+		if (await northstar_update_available()) {
+			console.log(lang("cli.autoupdates.available"));
+			if (await is_running.game()) {
+				console.log(lang("cli.autoupdates.gamerunning"));
+				new Notification({
+					title: lang("gui.nsupdate.gaming.title"),
+					body: lang("gui.nsupdate.gaming.body")
+				}).show();
+			} else {
+				console.log(lang("cli.autoupdates.updatingns"));
+				update.northstar();
+			}
+		} else {
+			console.log(lang("cli.autoupdates.noupdate"));
+		}
+
+		setTimeout(
+			_checkForUpdates,
+			15 * 60 * 1000
+			// interval in between each update check
+			// by default 15 minutes.
+		);
+	}
+
+	_checkForUpdates();
+}
+
+// returns whether an update is available for Northstar
+async function northstar_update_available() {
+	let local = version.northstar();
+	let distant = await requests.getLatestNsVersion();
+
+	if (distant == false) {
+		return false;
+	}
+
+	// checks if NS is outdated
+	if (local !== distant) {
+		return true;
+	} else {
+		return false;
+	}
+}
+
+// Updates Viper itself
+//
+// This uses electron updater to easily update and publish releases, it
+// simply fetches it from GitHub and updates if it's outdated, very
+// useful. Not much we have to do on our side.
+update.viper = (autoinstall) => {
+	const { autoUpdater } = require("electron-updater");
+
+	if (! autoUpdater.isUpdaterActive()) {
+		if (settings.nsupdate) {
+			update.northstar_autoupdate();
+		}
+
+		return cli.exit();
+	}
+
+	if (autoinstall) {
+		autoUpdater.on("update-downloaded", (info) => {
+			autoUpdater.quitAndInstall();
+		});
+	}
+
+	autoUpdater.on("error", (info) => {cli.exit(1)});
+	autoUpdater.on("update-not-available", (info) => {
+		// only check for NS updates if Viper itself has no updates and
+		// if NS auto updates is enabled.
+		if (settings.nsupdate || cli.hasArgs()) {
+			update.northstar_autoupdate();
+		}
+		cli.exit();
+	});
+
+	autoUpdater.checkForUpdatesAndNotify();
+}
+
+// Installs/Updates Northstar
+//
+// If Northstar is already installed it'll be an update, otherwise it'll
+// install it. It simply downloads the Northstar archive from GitHub, if
+// it's outdated, then extracts it into the game path.
+//
+// As to handle not overwriting files we rename certain files to
+// <file>.excluded, then rename them back after the extraction. The
+// unzip module does not support excluding files directly.
+update.northstar = async () => {
+	if (await is_running.game()) {
+		console.log(lang("cli.autoupdates.gamerunning"));
+		return false;
+	}
+
+	if (! gamepath.exists()) {return}
+
+	ipcMain.emit("ns-update-event", "cli.update.checking");
+	console.log(lang("cli.update.checking"));
+	let ns_version = version.northstar();
+
+	const latest_version = await requests.getLatestNsVersion();
+	console.log(latest_version)
+	if (latest_version == false) {
+		ipcMain.emit("ns-update-event", "cli.update.noInternet");
+		return;
+	}
+
+	// Makes sure it is not already the latest version
+	if (! await northstar_update_available()) {
+		ipcMain.emit("ns-update-event", "cli.update.uptodate.short");
+		console.log(lang("cli.update.uptodate"), ns_version);
+
+		win.log(lang("gui.update.uptodate"));
+		cli.exit();
+		return;
+	} else {
+		if (ns_version != "unknown") {
+			console.log(lang("cli.update.current"), ns_version);
+		};
+
+		console.log(lang("cli.update.downloading") + ":", latest_version);
+		ipcMain.emit("ns-update-event", "cli.update.downloading");
+	}
+
+	exclude_files();
+
+	// Start the download of the zip
+	https.get(requests.getLatestNsVersionLink(), (res) => {
+		let stream = fs.createWriteStream(settings.zip);
+		res.pipe(stream);
+
+		let received = 0;
+		// Progress messages, we should probably switch this to
+		// percentage instead of how much is downloaded.
+		res.on("data", (chunk) => {
+			received += chunk.length;
+			ipcMain.emit("ns-update-event", lang("gui.update.downloading") + " " + (received / 1024 / 1024).toFixed(1) + "mb");
+		})
+
+		stream.on("finish", () => {
+			stream.close();
+			let extract = fs.createReadStream(settings.zip);
+
+			win.log(lang("gui.update.extracting"));
+			ipcMain.emit("ns-update-event", "gui.update.extracting");
+			console.log(lang("cli.update.downloaddone"));
+			// Extracts the zip, this is the part where we're actually
+			// installing Northstar.
+			extract.pipe(unzip.Extract({path: settings.gamepath}))
+
+			let max = received;
+			received = 0;
+
+			extract.on("data", (chunk) => {
+				received += chunk.length;
+				let percent = Math.floor(received / max * 100);
+				ipcMain.emit("ns-update-event", lang("gui.update.extracting") + " " + percent + "%");
+			})
+
+			extract.on("end", () => {
+				extract.close();
+				ipcMain.emit("getversion");
+
+				restore_excluded_files();
+
+				ipcMain.emit("gui-getmods");
+				ipcMain.emit("get-version");
+				ipcMain.emit("ns-update-event", "cli.update.uptodate.short");
+				win.log(lang("gui.update.finished"));
+				console.log(lang("cli.update.finished"));
+				cli.exit();
+			})
+		})
+	})
+}
+
+module.exports = update;
diff --git a/src/modules/window.js b/src/modules/window.js
new file mode 100644
index 0000000..3b5c76f
--- /dev/null
+++ b/src/modules/window.js
@@ -0,0 +1,15 @@
+const ipcMain = require("electron").ipcMain;
+
+let win = {};
+
+// logs into the dev tools of the renderer
+win.log = (msg) => {
+	ipcMain.emit("win-log", msg, msg);
+}
+
+// sends an alert to the renderer
+win.alert = (msg) => {
+	ipcMain.emit("win-alert", msg, msg);
+}
+
+module.exports = win;