add util method to detect osu folder, still needs to be tested on different systems.

app.js

@@ -147,6 +147,12 @@ const run = () => {
                         message: "Seems like you are missing the wmctrl package, please install it for the RPC to work!"
                     });
                 } else linuxWMCtrlFound = true;
+            } else {
+                const osuFolder = await config.get("osuPath");
+                if (!osuFolder || osuFolder == "") {
+                    const foundFolder = await osuUtil.findOsuInstallation();
+                    console.log("osu! Installation located at: ",foundFolder);
+                }
             }
         })
         app.on('activate', function () {
@@ -171,8 +177,10 @@ const run = () => {
             }
             rpc.updateState("Launching osu!...");
             isIngame = true;
+            mainWindow.hide();
             const result = await osuUtil.startOsuWithDevServer(tempOsuPath, "ez-pp.farm", async () => {
                 isIngame = false;
+                mainWindow.show();
                 await doUpdateCheck(mainWindow);
             });
             return result;

osuUtil.js

@@ -171,8 +171,23 @@ async function setConfigValue(configPath, key, value) {
     }
     await fs.promises.writeFile(configPath, configLines.join("\n"), 'utf-8');
 }
+async function findOsuInstallation() {
+    const regedit = require('qiao-regedit');
+
+    const osuLocationFromDefaultIcon = "HKLM\\SOFTWARE\\Classes\\osu\\DefaultIcon";
+    const osuStruct = await regedit.listValuesSync(osuLocationFromDefaultIcon);
+    for (const line of osuStruct.split("\n")) {
+        if (line.includes("REG_SZ")) {
+            let value = (line.trim().split("    ")[2]);
+            value = value.substring(1, value.length - 3);
+            return value.trim();
+        }
+    }
+    return undefined;
+}
 
 module.exports = {
     isValidOsuFolder, getLatestConfig, getUpdateFiles, filesThatNeedUpdate,
-    downloadUpdateFiles, startOsuWithDevServer: startWithDevServer, setConfigValue
+    downloadUpdateFiles, startOsuWithDevServer: startWithDevServer, setConfigValue,
+    findOsuInstallation
 }

package.json

@@ -54,6 +54,7 @@
     "get-window-by-name": "^2.0.0",
     "jquery": "^3.6.0",
     "node-downloader-helper": "^2.1.4",
+    "qiao-regedit": "^0.1.5",
     "sweetalert2": "^11.5.2"
   }
 }