Refactor: split main.js into app/ modules

app/dependencyCheck.js

@@ -0,0 +1,32 @@
+const fs = require("fs");
+const { app, dialog } = require("electron");
+const { logger } = require("../server/logger");
+
+function checkNativeDependencies() {
+  const { binaryPaths } = require("../server/helpers/path.helpers");
+
+  const deps = [
+    { name: "yt-dlp.exe",  path: binaryPaths.ytDlp },
+    { name: "ffmpeg.exe",  path: binaryPaths.ffmpeg },
+    { name: "ffprobe.exe", path: binaryPaths.ffprobe },
+    { name: "deno.exe",    path: binaryPaths.deno },
+  ];
+
+  const missing = deps.filter(d => !fs.existsSync(d.path));
+  if (missing.length === 0) return true;
+
+  const list = missing.map(d => d.name).join(", ");
+  logger.error(`Missing dependencies: ${list}`);
+
+  app.whenReady().then(() => {
+    dialog.showErrorBox(
+      "Missing dependencies",
+      `The following files are missing in the 'ressources' folder:\n${list}\n\nThe application will now exit. Try to reinstall.`
+    );
+    app.quit();
+  });
+
+  return false;
+}
+
+module.exports = { checkNativeDependencies };