restructuring file storage service

nextjs/src/services/fileStorage/moduleFileStorageService.ts

@@ -0,0 +1,24 @@
+import { promises as fs } from "fs";
+import path from "path";
+import { basePath } from "./utils/fileSystemUtils";
+
+export const moduleFileStorageService = {
+  async getModuleNames(courseName: string) {
+    const courseDirectory = path.join(basePath, courseName);
+    const moduleDirectories = await fs.readdir(courseDirectory, {
+      withFileTypes: true,
+    });
+
+    const modulePromises = moduleDirectories
+      .filter((dirent) => dirent.isDirectory())
+      .map((dirent) => dirent.name);
+
+    const modules = await Promise.all(modulePromises);
+    return modules.sort((a, b) => a.localeCompare(b));
+  },
+  async createModule(courseName: string, moduleName: string) {
+    const courseDirectory = path.join(basePath, courseName);
+
+    await fs.mkdir(courseDirectory + "/" + moduleName, { recursive: true });
+  },
+};