// Schedule: 0 0 */2 * *
// Name: Scheduled Folder Backup
// Description: Incrementally backup a folder to an external SSD every 2 days using rsync.

import "@johnlindquist/kit"

try {
  // 1. Prompt the user to select the source folder for backup
  const sourceFolder = await path({
    hint: "Select folder to backup:",
    onlyDirs: true,
  });

  if (!sourceFolder) {
    notify("Backup cancelled: Source folder not selected.");
    exit(); // Exit the script if no source folder is selected
    return;
  }

  // 2. Prompt the user to select the destination folder on the external SSD
  const destinationFolder = await path({
    hint: "Select external SSD destination:",
    onlyDirs: true,
  });

  if (!destinationFolder) {
    notify("Backup cancelled: Destination folder not selected.");
    exit(); // Exit if no destination folder is selected
    return;
  }

  // 3. Construct the rsync command for incremental backup
  // -avz: archive mode (recursive, preserves permissions, times, etc.), verbose, compress
  // --delete: delete extraneous files from destination dirs (files that no longer exist in source)
  // --progress: show progress during transfer for better user feedback
  const command = `rsync -avz --delete --progress "${sourceFolder}/" "${destinationFolder}"`;

  // 4. Execute the rsync command
  await exec(command);

  
// 5. Notify the user that the backup has completed successfully
  notify("Backup completed successfully!");

} catch (error) {
  // 6. Handle any errors that occur during the backup process
  console.error(`Backup failed: ${error}`);
  notify({
    title: "Backup Failed!",
    body: "See logs for details.",
    icon: "error" // You might need to define or have a default 'error' icon
  });
}