2 files changed, 81 insertions, 1 deletions
diff --git a/src-tauri/src/main.rs b/src-tauri/src/main.rs
index 747a51e0..c42a61dc 100644
--- a/src-tauri/src/main.rs
+++ b/src-tauri/src/main.rs
@@ -45,7 +45,8 @@ fn main() {
             add_count,
             force_panic,
             find_game_install_location_caller,
-            get_version_number
+            get_version_number,
+            get_northstar_version_number_caller
         ])
         .run(tauri::generate_context!())
         .expect("error while running tauri application");
@@ -109,3 +110,73 @@ fn get_version_number() -> String {
     let version = env!("CARGO_PKG_VERSION");
     format!("v{}", version)
 }
+
+#[tauri::command]
+fn get_northstar_version_number_caller() -> String {
+    match get_northstar_version_number() {
+        Ok(version_number) => version_number,
+        Err(err) => {
+            println!("{}", err);
+            "".to_string()
+        }
+    }
+}
+
+/// Check version number of a mod
+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())
+}
+
+/// Returns the current Northstar version number as a string
+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)
+}
diff --git a/src-ui/src/main.ts b/src-ui/src/main.ts
index eccd1919..127aa119 100644
--- a/src-ui/src/main.ts
+++ b/src-ui/src/main.ts
@@ -62,6 +62,15 @@ document.addEventListener("DOMContentLoaded", async function () {
         omniButtonEl.textContent = "Install";
         installLocationHolderEl.textContent = install_location;
         globalState.gamepath = install_location;
+
+        // Check installed Northstar version if found
+        let northstar_version_number = await invoke("get_northstar_version_number_caller") as string;
+        if (northstar_version_number && northstar_version_number.length > 0) {
+            globalState.installed_northstar_version = northstar_version_number;
+            omniButtonEl.textContent = "Play"
+            // TODO check if version is newest
+        }
+        console.log(globalState);
     }
     else {
         omniButtonEl.textContent = "Find Titanfall2 install location";