1 files changed, 174 insertions, 23 deletions

diff --git a/src/modules/launch.js b/src/modules/launch.js
index 73ce408..544e155 100644
--- a/src/modules/launch.js
+++ b/src/modules/launch.js
@@ -1,15 +1,16 @@
-const exec = require("child_process").exec;
-const ipcMain = require("electron").ipcMain;
+const { ipcMain, shell } = require("electron");
+const { exec, execSync } = require("child_process");
 
 const cli = require("../cli");
 const win = require("../win");
 const lang = require("../lang");
 
+const in_path = require("./in_path");
 const settings = require("./settings");
 
 console = require("./console");
 
-ipcMain.on("launch-ns", launch);
+ipcMain.on("launch-ns", () => {launch()});
 ipcMain.on("launch-vanilla", () => {
 	launch("vanilla");
 })
@@ -18,37 +19,187 @@ ipcMain.on("launch-vanilla", () => {
 //
 // either Northstar or Vanilla. Linux support is not currently a thing,
 // however it'll be added at some point.
-function launch(game_version) {
-	// return early, and show error message if on Linux
-	if (process.platform == "linux") {
-		win().alert(lang("cli.launch.linux_error"));
-		console.error(lang("cli.launch.linux_error"));
-		cli.exit(1);
-		return;
-	}
+function launch(game_version, method = settings().linux_launch_method) {
+	console.info(
+		lang("general.launching"),
+		game_version || "Northstar" + "..."
+	)
 
 	// change current directory to gamepath
 	process.chdir(settings().gamepath);
 
 	let launch_args = settings().nsargs || "";
 
-	// launch the requested game version
-	switch(game_version) {
-		case "vanilla":
-			console.info(lang("general.launching"), "Vanilla...");
-			exec("Titanfall2.exe " + launch_args, {
-				cwd: settings().gamepath
+	// add `-vanilla` or `-northstar` depending on `game_version`
+	if (game_version == "vanilla") {
+		launch_args += " -vanilla"
+	} else {
+		launch_args += " -northstar"
+	}
+
+
+	// Linux launch support
+	if (process.platform == "linux") {
+		let flatpak_id = "com.valvesoftware.Steam";
+		let steam_run_str = `steam://run/1237970//${launch_args}/`;
+		console.log(steam_run_str)
+
+		// returns whether the Flatpak version of Steam is installed
+		let flatpak_steam_installed = () => {
+			// this will throw an error if the command fails,
+			// either because of an error with the command, or
+			// because it's not installed, either way,
+			// indicating it's not installed
+			try {
+				execSync(
+					`flatpak info ${flatpak_id}`
+				)
+
+				return true;
+			}catch(err) {}
+
+			return false;
+		}
+
+		switch(method) {
+			case "steam_auto":
+				// if a Steam executable is found, use that
+				if (in_path("steam")) {
+					return launch(game_version, "steam_executable");
+
+				// is Flatpak (likely) installed?
+				} else if (in_path("flatpak")) { 
+
+					if (flatpak_steam_installed()) {
+						return launch(game_version, "steam_flatpak");
+					}
+				}
+
+				// fallback to Steam protocol
+				return launch(game_version, "steam_protocol");
+
+			case "steam_flatpak":
+				// make sure Flatpak is installed, and show an error
+				// toast if not
+				if (! in_path("flatpak")) {
+					win().toast({
+						scheme: "error",
+						title: lang("gui.toast.title.missing_flatpak"),
+						description: lang(
+							"gui.toast.desc.missing_flatpak"
+						)
+					})
+					return;
+				}
+
+				// make sure the Flatpak version of Steam is installed,
+				// and show an error toast if not
+				if (! flatpak_steam_installed()) {
+					win().toast({
+						scheme: "error",
+						title: lang(
+							"gui.toast.title.missing_flatpak_steam"
+						),
+						description: lang(
+							"gui.toast.desc.missing_flatpak_steam"
+						)
+					})
+					return;
+				}
+
+				// attempt to launch the game with Flatpak Steam
+				exec(`flatpak run ${flatpak_id} "${steam_run_str}"`, {
+
+					cwd: settings().gamepath
+				})
+
+				return;
+
+			case "steam_executable":
+				// make sure Steam is installed, and show an error toast
+				// if not
+				if (! in_path("steam")) {
+					win().toast({
+						scheme: "error",
+						title: lang("gui.toast.title.missing_steam"),
+						description: lang(
+							"gui.toast.desc.missing_steam"
+						)
+					})
+					return;
+				}
+
+				// attempt to launch the game with the Steam executable
+				exec(`steam "${steam_run_str}"`, {
+					cwd: settings().gamepath
+				})
+
+				return;
+
+			case "steam_protocol":
+				// attempt to launch the game with the Steam protocol
+				shell.openExternal(steam_run_str)
+
+				return;
+		}
+
+		// launch Vanilla with custom command
+		let command = settings().linux_launch_cmd_ns;
+		if (game_version == "vanilla") {
+			command = settings().linux_launch_cmd_vanilla;
+		}
+
+		// make sure the custom command is not just whitespace, and show
+		// an error toast if it is
+		if (! command.trim()) {
+			win().toast({
+				scheme: "error",
+				title: lang("gui.toast.title.missing_launch_command"),
+				description: lang(
+					"gui.toast.desc.missing_launch_command"
+				)
 			})
 
-			break;
-		default:
-			console.info(lang("general.launching"), "Northstar...");
-			exec("NorthstarLauncher.exe " + launch_args, {
-				cwd: settings().gamepath
+			return;
+		}
+
+		// launch Northstar with custom command
+		try {
+			exec(command, {
+				cwd: settings().gamepath,
+				env: {
+					...process.env,
+					TF_ARGS: launch_args
+				}
 			})
+		}catch(err) { 
+			// show error if custom commands fails
+			// this should basically never trigger, it should only
+			// trigger if `command` isn't set to something valid
+			win().toast({
+				scheme: "error",
+				title: lang("gui.toast.title.failed_launch_command"),
+				description: lang(
+					"gui.toast.desc.failed_launch_command"
+				)
+			})
+		}
+
+		return;
+	}
 
-			break;
+	// default launches with Northstar
+	let executable = "NorthstarLauncher.exe"
+
+	// change over to using vanilla executable
+	if (game_version == "vanilla") {
+		executable = "Titanfall2.exe"
 	}
+
+	// launch executable/game
+	exec(executable + " " + launch_args, {
+		cwd: settings().gamepath
+	})
 }
 
 module.exports = launch;