Pass folder name in Deno through cli gives errors

[deadcoder0904]

So I asked Chatgpt to write the code. I usually ask it to write in Python but it gave weird errors so I switched to Go & Rust, then finally to Deno bcz I am quite familiar with Node.

// Import required Deno modules
import { walk } from 'https://deno.land/std/fs/mod.ts';
import { exec } from 'https://deno.land/x/exec/mod.ts';

// Function to calculate total watch time
async function calculateTotalWatchTime(folderPath: string): Promise<number[]> {
  let totalDurationInSeconds = 0;

  // Iterate through files in the folder and its subfolders
  for await (const entry of walk(folderPath, { includeDirs: false })) {
    // Check if the file is a video file
    if (isVideoFile(entry.name)) {
      // Extract video duration using FFmpeg
      const videoMetadata = await extractVideoMetadata(entry.path);

      // Accumulate the duration in seconds
      totalDurationInSeconds += videoMetadata.durationInSeconds;
    }
  }

  // Convert total duration to hours, minutes, and seconds
  const hours = Math.floor(totalDurationInSeconds / 3600);
  const minutes = Math.floor((totalDurationInSeconds % 3600) / 60);
  const seconds = totalDurationInSeconds % 60;

  return [hours, minutes, seconds];
}

// Function to check if the file is a video file
function isVideoFile(fileName: string): boolean {
  return /\.(mp4|mkv|ts|webm)$/i.test(fileName);
}

// Function to extract video metadata using FFmpeg
async function extractVideoMetadata(filePath: string): Promise<{ durationInSeconds: number }> {
  // Run FFmpeg command to get video duration
  const cmd = ['ffmpeg', '-i', filePath, '-show_entries', 'format=duration', '-v', 'quiet', '-of', 'csv=p=0'];
  const result = await exec(cmd);

  // Parse the duration from the result
  const durationInSeconds = parseFloat(result.trim());

  return { durationInSeconds };
}

// Get folder path from Deno.args
const [folderPath] = Deno.args;

// Check if folderPath is provided
if (!folderPath) {
  console.error('Please provide the folder path as an argument.');
  Deno.exit(1);
}

// Calculate and log the total watch time
const totalWatchTime = await calculateTotalWatchTime(folderPath);
console.log(`Total watch time: ${totalWatchTime[0]} hours, ${totalWatchTime[1]} minutes, ${totalWatchTime[2]} seconds.`);

Now this code calculates how much time a certain folder would take to watch?

But I get weird errors while using Windows Terminal. I get 2 errors in fact:

1st Error

PS D:\Folder> deno run --allow-read .\video-time-calculator.ts '.\Nextjs\Nextjs - The Complete Guide\'
error: Uncaught (in promise) WalkError: The filename, directory name, or volume label syntax is incorrect. (os error 123): readdir '.\Nextjs\Nextjs - The Complete Guide"' for path "Nextjs\Nextjs - The Complete Guide""
  return new WalkError(err, root);

see the additional " at the end of The Complete Guide"... that happens if I add \ to deno run foldername. This is autocomplete by Windows Terminal.

2nd Error

PS D:\Folder> deno run --allow-read .\video-time-calculator.ts '.\Nextjs\Nextjs - The Complete Guide'
✅ Granted run access to "ffmpeg,-i,Nextjs\Nextjs".
error: Uncaught (in promise) NotFound: The system cannot find the path specified. (os error 3)
  let p = Deno.run({ cmd: splits, stdout: "piped", stderr: "piped" });

This time I removed the \ bcz last time I got the same error in Python too bcz of the \. I also have ffmpeg installed through winget.

This is Windows New Terminal which is fast as hell but I do have my doubts on it sometimes.

Okay, how can I solve this?

I don't wanna put path in the source code either. Just need to pass it via terminal. Lmk if it's not a deno issue.

PS: Love deno. It feels familiar & simple with no-config TS.