chore: check for missing files on start

src-tauri/src/commands.rs

@@ -639,3 +639,32 @@ pub fn exit(app: AppHandle) {
 pub fn get_platform() -> String {
     std::env::consts::OS.to_string()
 }
+
+#[tauri::command]
+pub async fn check_for_corruption(folder: String) -> Result<bool, String> {
+    let osu_path = PathBuf::from(folder);
+    let osu_ui = osu_path.join("osu!ui.dll");
+    let osu_gameplay = osu_path.join("osu!gameplay.dll");
+
+    let osu_ui_bak = osu_path.join("osu!ui.dll.bak");
+    let osu_gameplay_bak = osu_path.join("osu!gameplay.dll.bak");
+
+    let required_files = [&osu_ui, &osu_gameplay];
+
+    for file in &required_files {
+        if !file.exists() {
+            return Ok(true);
+        }
+    }
+
+    let bak_files = [&osu_ui_bak, &osu_gameplay_bak];
+    for bak in &bak_files {
+        if bak.exists() {
+            if let Err(e) = fs::remove_file(bak).await {
+                return Err(format!("Failed to delete {}: {}", bak.display(), e));
+            }
+        }
+    }
+
+    Ok(false)
+}

src-tauri/src/lib.rs

@@ -4,11 +4,11 @@ use tauri::Manager;
 pub mod commands;
 pub mod utils;
 use crate::commands::{
-    download_ezpp_launcher_update_files, exit, find_osu_installation, get_beatmapsets_count,
+    check_for_corruption, download_ezpp_launcher_update_files, exit, find_osu_installation,
-    get_ezpp_launcher_update_files, get_hwid, get_launcher_version, get_osu_release_stream,
+    get_beatmapsets_count, get_ezpp_launcher_update_files, get_hwid, get_launcher_version,
-    get_osu_skin, get_osu_version, get_skins_count, is_osu_running, open_url_in_browser,
+    get_osu_release_stream, get_osu_skin, get_osu_version, get_platform, get_skins_count,
-    replace_ui_files, run_osu, run_osu_updater, set_osu_config_values, set_osu_user_config_values,
+    is_osu_running, open_url_in_browser, replace_ui_files, run_osu, run_osu_updater,
-    valid_osu_folder, get_platform
+    set_osu_config_values, set_osu_user_config_values, valid_osu_folder,
 };
 
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
@@ -46,7 +46,8 @@ pub fn run() {
             open_url_in_browser,
             get_launcher_version,
             exit,
-            get_platform
+            get_platform,
+            check_for_corruption
         ])
         .plugin(tauri_plugin_fs::init())
         .plugin(tauri_plugin_dialog::init())

src/lib/osuUtil.ts

@@ -114,3 +114,5 @@ export const isOsuRunning = async () => {
 export const getLauncherVersion = async () => await invoke<string>('get_launcher_version');
 export const exit = async () => await invoke('exit');
 export const getPlatform = async () => await invoke<string>('get_platform');
+export const isOsuCorrupted = async (folder: string) =>
+  await invoke<boolean>('check_for_corruption', { folder });

src/pages/Launch.svelte

@@ -84,6 +84,7 @@
     getSkin,
     getSkinsCount,
     getVersion,
+    isOsuCorrupted,
     isOsuRunning,
     isValidOsuFolder,
     replaceUIFiles,
@@ -221,7 +222,9 @@
       }
 
       const releaseStream = await getReleaseStream(osuPath);
-      let forceUpdate = releaseStream && releaseStream.toLowerCase() !== 'stable40';
+      const osuCorrupted = await isOsuCorrupted(osuPath);
+      let forceUpdate =
+        (releaseStream && releaseStream.toLowerCase() !== 'stable40') || osuCorrupted;
 
       const versions = compareBuildNumbers($osuBuild, streamInfo);
       if (versions > 0 || forceUpdate) {