From e9d990d0498d95f050a8c6bb9b3403336e852fe6 Mon Sep 17 00:00:00 2001
From: GeckoEidechse <gecko.eidechse+git@pm.me>
Date: Sat, 10 Sep 2022 20:36:24 +0200
Subject: Add initial back-end code for launching Northstar

---
 src-tauri/src/lib.rs  |  2 +-
 src-tauri/src/main.rs | 31 ++++++++++++++++++++++++++++++-
 2 files changed, 31 insertions(+), 2 deletions(-)

(limited to 'src-tauri/src')

diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
index d0377917..da1ba9b8 100644
--- a/src-tauri/src/lib.rs
+++ b/src-tauri/src/lib.rs
@@ -14,7 +14,7 @@ pub enum InstallType {
 
 #[derive(Serialize, Deserialize, Debug, Clone)]
 pub struct GameInstall {
-    game_path: String,
+    pub game_path: String,
     pub install_type: InstallType,
 }
 
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 097774d4..4244e364 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -9,9 +9,10 @@ use std::{
     time::Duration,
 };
 
+use anyhow::anyhow;
 use app::{
     check_is_valid_game_path, find_game_install_location, get_northstar_version_number,
-    install_northstar, GameInstall,
+    install_northstar, GameInstall, InstallType,
 };
 use tauri::{Manager, State};
 use tokio::time::sleep;
@@ -193,5 +194,33 @@ async fn update_northstar_caller(game_path: String) -> Result<bool, String> {
 /// Launches Northstar
 fn launch_northstar(game_install: GameInstall) -> Result<String, String> {
     dbg!(game_install.clone());
+
+    // Some safety checks before, should have more in the future
+    if get_northstar_version_number(game_install.game_path.clone()).is_err() {
+        return Err(anyhow!("Not all checks were met").to_string());
+    }
+
+    let host_os = get_host_os();
+
+    // Switch to Titanfall2 directory for launching
+    // NorthstarLauncher.exe expects to be run from that folder
+    if std::env::set_current_dir(game_install.game_path.clone()).is_err() {
+        // We failed to get to Titanfall2 directory
+        return Err(anyhow!("Couldn't access Titanfall2 directory").to_string());
+    }
+
+    // Only Windows with Steam or Origin are supported at the moment
+    if host_os == "windows"
+        && (matches!(game_install.install_type, InstallType::STEAM)
+            || matches!(game_install.install_type, InstallType::ORIGIN))
+    {
+        let _output =
+            std::process::Command::new(format!("{}/NorthstarLauncher.exe", game_install.game_path))
+                // .args(&["a", "b"])
+                .spawn()
+                .expect("failed to execute process");
+        return Ok("Launched game".to_string());
+    }
+
     Err(format!("Not yet implemented for {:?} on {}", game_install.install_type, get_host_os()))
 }
-- 
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