1 files changed, 81 insertions, 0 deletions
diff --git a/src-tauri/src/lib.rs b/src-tauri/src/lib.rs
new file mode 100644
index 00000000..0bb07e90
--- /dev/null
+++ b/src-tauri/src/lib.rs
@@ -0,0 +1,81 @@
+use anyhow::anyhow;
+
+/// Check version number of a mod
+pub fn check_mod_version_number(path_to_mod_folder: String) -> Result<String, anyhow::Error> {
+    // println!("{}", format!("{}/mod.json", path_to_mod_folder));
+    let data = std::fs::read_to_string(format!("{}/mod.json", path_to_mod_folder))?;
+    let parsed_json: serde_json::Value = serde_json::from_str(&data)?;
+    // println!("{}", parsed_json);
+    let mod_version_number = match parsed_json.get("Version").and_then(|value| value.as_str()) {
+        Some(version_number) => version_number,
+        None => return Err(anyhow!("No version number found")),
+    };
+
+    println!("{}", mod_version_number);
+
+    Ok(mod_version_number.to_string())
+}
+
+/// Attempts to find the game install location
+pub fn find_game_install_location() -> Result<String, anyhow::Error> {
+    // Attempt parsing Steam library directly
+    match steamlocate::SteamDir::locate() {
+        Some(mut steamdir) => {
+            let titanfall2_steamid = 1237970;
+            match steamdir.app(&titanfall2_steamid) {
+                Some(app) => {
+                    // println!("{:#?}", app);
+                    return Ok(app.path.to_str().unwrap().to_string());
+                }
+                None => println!("Couldn't locate Titanfall2"),
+            }
+        }
+        None => println!("Couldn't locate Steam on this computer!"),
+    }
+    Err(anyhow!(
+        "Could not auto-detect game install location! Please enter it manually."
+    ))
+}
+
+/// Returns the current Northstar version number as a string
+pub fn get_northstar_version_number() -> Result<String, anyhow::Error> {
+    let install_location = match find_game_install_location() {
+        Ok(path) => path,
+        Err(err) => return Err(err),
+    };
+
+    println!("{}", install_location);
+
+    // TODO:
+    // Check if NorthstarLauncher.exe exists and check its version number
+    let profile_folder = "R2Northstar";
+    let core_mods = [
+        "Northstar.Client",
+        "Northstar.Custom",
+        "Northstar.CustomServers",
+    ];
+    let initial_version_number = match check_mod_version_number(format!(
+        "{}/{}/mods/{}",
+        install_location, profile_folder, core_mods[0]
+    )) {
+        Ok(version_number) => version_number,
+        Err(err) => return Err(err),
+    };
+
+    for core_mod in core_mods {
+        let current_version_number = match check_mod_version_number(format!(
+            "{}/{}/mods/{}",
+            install_location, profile_folder, core_mod
+        )) {
+            Ok(version_number) => version_number,
+            Err(err) => return Err(err),
+        };
+        if current_version_number != initial_version_number {
+            // We have a version number mismatch
+            return Err(anyhow!("Found version number mismatch"));
+        }
+    }
+    println!("All mods same version");
+
+    Ok(initial_version_number)
+}