Merge pull request #46 from 0neGal/documentation

Adding documentation/comments

1 files changed, 95 insertions, 9 deletions

diff --git a/src/utils.js b/src/utils.js
index e6fa5b0..50ffed0 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -17,17 +17,22 @@ const { https } = require("follow-redirects");
 
 process.chdir(app.getPath("appData"));
 
+// Base settings
 var settings = {
 	gamepath: "",
 	lang: "en-US",
 	autoupdate: true,
 	zip: "/northstar.zip",
+
+	// These files won't be overwritten when installing/updating
+	// Northstar, useful for config file.
 	excludes: [
 		"ns_startup_args.txt",
 		"ns_startup_args_dedi.txt"
 	]
 }
 
+// Creates the settings file with the base settings if it doesn't exist.
 if (fs.existsSync("viper.json")) {
 	settings = {...settings, ...JSON.parse(fs.readFileSync("viper.json", "utf8"))};
 	settings.zip = path.join(settings.gamepath + "/northstar.zip");
@@ -35,10 +40,14 @@ if (fs.existsSync("viper.json")) {
 	console.log(lang("general.missingpath"));
 }
 
-
+// A simple function that checks if the game is running, which we use to
+// not update Northstar when it is running.
 async function isGameRunning() {
 	return new Promise(resolve => {
 		let procs = ["Titanfall2.exe", "Titanfall2-unpacked.exe", "NorthstarLauncher.exe"];
+		// 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";
@@ -59,6 +68,10 @@ async function isGameRunning() {
 	});
 }
 
+// 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.
 northstar_auto_updates: {
 	if (!settings.autoupdate || !fs.existsSync("viper.json") || settings.gamepath.length === 0) {
 		break northstar_auto_updates;
@@ -69,6 +82,7 @@ northstar_auto_updates: {
 		let distantVersion = await requests.getLatestNsVersion();
 		console.log(lang("cli.autoupdates.checking"));
 
+		// Checks if NS is outdated
 		if (localVersion !== distantVersion) {
 			console.log(lang("cli.autoupdates.available"));
 			if (await isGameRunning()) {
@@ -87,7 +101,9 @@ northstar_auto_updates: {
 
 		setTimeout(
 			_checkForUpdates, 
-			15 * 60 * 1000	// update checking interval must be bigger than cache validity duration
+			15 * 60 * 1000
+			// interval in between each update check
+			// by default 15 minutes.
 		);
 	}
 
@@ -95,10 +111,14 @@ northstar_auto_updates: {
 }
 
 
+// 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.
 function setpath(win) {
-	if (! win) {
+	if (! win) { // CLI
 		settings.gamepath = cli.param("setpath");
-	} else {
+	} else { // GUI
 		dialog.showOpenDialog({properties: ["openDirectory"]}).then(res => {
 			if (res.canceled) {
 				ipcMain.emit("newpath", null, false);
@@ -121,10 +141,15 @@ function setpath(win) {
 	cli.exit();
 }
 
+// As to not have to do the same one liner a million times, this
+// function exists, as the name suggests, it simply writes the current
+// settings to the disk.
 function saveSettings() {
 	fs.writeFileSync(app.getPath("appData") + "/viper.json", JSON.stringify(settings));
 }
 
+// Returns the current Northstar version
+// If not installed it'll return "unknown"
 function getNSVersion() {
 	var versionFilePath = path.join(settings.gamepath, "ns_version.txt");
 
@@ -137,11 +162,11 @@ function getNSVersion() {
 }
 
 
-/**
- * Loads up Titanfall|2 version from gameversion.txt file.
- * TODO This file is present on Origin install, should check if it's present with 
- * Steam install as well.
- */
+// 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.
 function getTF2Version() {
 	var versionFilePath = path.join(settings.gamepath, "gameversion.txt");
 	if (fs.existsSync(versionFilePath)) {
@@ -151,7 +176,17 @@ function getTF2Version() {
 	}
 }
 
+// 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.
 async function update() {
+	// Renames excluded files to <file>.excluded
 	for (let i = 0; i < settings.excludes.length; i++) {
 		let exclude = path.join(settings.gamepath + "/" + settings.excludes[i]);
 		if (fs.existsSync(exclude)) {
@@ -165,6 +200,7 @@ async function update() {
 
 	const latestAvailableVersion = await requests.getLatestNsVersion();
 
+	// Makes sure it is not already the latest version
 	if (version === latestAvailableVersion) {
 		ipcMain.emit("ns-update-event", "cli.update.uptodate.short");
 		console.log(lang("cli.update.uptodate"), version);
@@ -179,11 +215,14 @@ async function update() {
 		ipcMain.emit("ns-update-event", "cli.update.downloading");
 	}
 
+	// 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");
@@ -194,11 +233,14 @@ async function update() {
 			winLog(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.
 			fs.createReadStream(settings.zip).pipe(unzip.Extract({path: settings.gamepath}))
 			.on("finish", () => {
 					fs.writeFileSync(path.join(settings.gamepath, "ns_version.txt"), latestAvailableVersion);
 					ipcMain.emit("getversion");
 
+				// Renames excluded files to their original name
 				for (let i = 0; i < settings.excludes.length; i++) {
 					let exclude = path.join(settings.gamepath + "/" + settings.excludes[i]);
 					if (fs.existsSync(exclude + ".excluded")) {
@@ -216,6 +258,11 @@ async function update() {
 	})
 }
 
+// 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.
 function updatevp(autoinstall) {
 	const { autoUpdater } = require("electron-updater");
 
@@ -231,6 +278,10 @@ function updatevp(autoinstall) {
 	autoUpdater.checkForUpdatesAndNotify();
 }
 
+// Launches the game
+//
+// Either Northstar or Vanilla. Linux support is not currently a thing,
+// however it'll be added at some point.
 function launch(version) {
 	if (process.platform == "linux") {
 		console.error("error:", lang("cli.launch.linuxerror"))
@@ -250,16 +301,27 @@ function launch(version) {
 	}
 }
 
+// Logs into the dev tools of the renderer
 function winLog(msg) {
 	ipcMain.emit("winLog", msg, msg);
 }
 
+// Sends an alert to the renderer
 function winAlert(msg) {
 	ipcMain.emit("winAlert", msg, msg);
 }
 
+// Used to manage mods.
+//
+// We can both get list of disabled mods, remove/install/toggle mods and
+// other things akin to that, all kinds of mod related stuff
 let modpath = path.join(settings.gamepath, "R2Northstar/mods");
 const mods = {
+	// Returns a list of mods
+	//
+	// It'll return 3 arrays, all, enabled, disabled. all being a
+	// combination of the other two, enabled being enabled mods, and you
+	// guessed it, disabled being disabled mods.
 	list: () => {
 		if (getNSVersion() == "unknown") {
 			winLog(lang("general.notinstalled"))
@@ -319,6 +381,13 @@ const mods = {
 			all: [...mods, ...disabled]
 		};
 	},
+
+	// Gets information about a mod
+	//
+	// Folder name, version, name and whatever else is in the mod.json,
+	// keep in mind if the mod developer didn't format their JSON file
+	// the absolute basics will be provided and we can't know the
+	// version or similar.
 	get: (mod) => {
 		if (getNSVersion() == "unknown") {
 			winLog(lang("general.notinstalled"))
@@ -337,6 +406,12 @@ const mods = {
 
 		return false;
 	},
+
+	// Installs mods from a file path
+	//
+	// Either a zip or folder is supported, we'll also try to search
+	// inside the zip or folder to see if buried in another folder or
+	// not, as sometimes that's the case.
 	install: (mod) => {
 		if (getNSVersion() == "unknown") {
 			winLog(lang("general.notinstalled"))
@@ -411,6 +486,10 @@ const mods = {
 			}catch(err) {return notamod()}
 		}
 	},
+	// Removes mods
+	//
+	// Takes in the names of the mod then removes it, no confirmation,
+	// that'd be up to the GUI.
 	remove: (mod) => {
 		if (getNSVersion() == "unknown") {
 			winLog(lang("general.notinstalled"))
@@ -454,6 +533,13 @@ const mods = {
 			cli.exit(1);
 		}
 	},
+
+	// Toggles mods
+	//
+	// If a mod is enabled it'll disable it, vice versa it'll enable it
+	// if it's disabled. You could have a direct .disable() function if
+	// you checked for if a mod is already disable and if not run the
+	// function. However we currently have no need for that.
 	toggle: (mod, fork) => {
 		if (getNSVersion() == "unknown") {
 			winLog(lang("general.notinstalled"))