fix(utils): normalize paths to use forward slashes for consistent platform support

src/utils/generateUniqueFilename.js

@@ -1,6 +1,15 @@
 import fs from 'fs/promises';
 import path from 'path';
 
+/**
+ * Utility to normalize paths to use forward slashes
+ * @param {string} p
+ * @return {string}
+ */
+function normalizeToForwardSlash(p) {
+  return p.split(path.sep).join('/');
+}
+
 /**
  * Generates a unique filename based on the original filename, ensuring it doesn't overwrite existing files.
  * @param {string} directory - The directory to save the downloaded image.
@@ -23,7 +32,7 @@ const generateUniqueFilename = async (directory, filename) => {
     counter += 1;
   }
 
-  return filePath;
+  return normalizeToForwardSlash(filePath);
 };
 
 export default generateUniqueFilename;

src/utils/renameAudioFileTitle.js

@@ -2,6 +2,15 @@ import path from 'path';
 import fs from 'fs/promises';
 import generateUniqueFilename from './generateUniqueFilename.js';
 
+/**
+ * Utility to normalize paths to use forward slashes
+ * @param {string} p
+ * @return {string}
+ */
+function normalizeToForwardSlash(p) {
+  return p.split(path.sep).join('/');
+}
+
 /**
  * Renames an audio file by its metadata properties: artist and title.
  *
@@ -22,11 +31,11 @@ export default async function renameFile(artist, title, filePath) {
   const proposedFileName = `${artist} - ${title}${ext}`;
 
   // Generate a unique filename to avoid overwriting
-  const newFilePath = await generateUniqueFilename(dir, proposedFileName);
+  const newFilePath = await generateUniqueFilename(normalizeToForwardSlash(dir), normalizeToForwardSlash(proposedFileName));
 
   try {
     await fs.rename(filePath, newFilePath);
-    return newFilePath; // Return the new path after successful rename
+    return normalizeToForwardSlash(newFilePath); // Return the new path after successful rename
   } catch (error) {
     console.error(`Error renaming file: ${error.message}`);
     throw error; // Rethrow the error for the caller to handle