ZSH script to apply anamorphic desqueeze to still photos

Anamorphic DeSqueeze Tool - MAC OS - Rupert Warries.zsh

#!/bin/bash
# Change to the directory where the script is located
cd "$(dirname "$0")"

# Clear the terminal screen
clear

# Tool Intro Text 
echo -e "\033[1mAnamorphic DNG EXIF DeSqueeze for Exiftool - written by Rupert Warries for MAC OS\033[0m\n\n\033[1m------------ \033[0m\n\nThis Tool will rewrite each DNG's EXIF data to allow Lightroom to render each image de-squeezed in DEVELOP module (library will still show squeezed image - any program that reads the pixel ratio in EXIF will also work)."
echo -e "\n\nUSAGE INSTRUCTION :\n1. Place this script from inside the folder containing the DNG images for processing\n2. Drag tool into a terminal window to run and follow the prompts\n3. DNG filenames must contain no spaces - run the tool by dragging into a terminal window and following the prompts\n4. an installation of Exiftool must be present for this script to operate\n\n\033[1m------------ \033[0m"

# Show the directory and ask for confirmation
echo -e "\nAll DNG files present will be de-squeezed in the following directory:\n$(pwd)\n"
read -p "Do you want to continue? (Y/N): " confirm

# Check user input
if [[ $confirm != [Yy] ]]; then
  echo "Processing cancelled."
  exit 1
fi

#Ask for Squeeze factor and Loop until a valid number is entered
while true; do
  read -p "Enter the lens squeeze factor (e.g. 1.0, 1.33, 1.5, 2.0): " squeeze_factor

  # Check if the input is a valid number
  if [[ $squeeze_factor =~ ^[0-9]+(\.[0-9]+)?$ ]]; then
    break
  else
    echo "Desqueeze must be a number"
  fi
done

# Process files in the current directory
for file in $(find . -maxdepth 1 -type f \( -iname "*.DNG" -o -iname "*.dng" \)); do
  exiftool -DefaultScale="$squeeze_factor 1.0" -overwrite_original "$file"
done

# Print confirmation message
echo -e "\n\033[1mProcessing complete\033[0m\nDNG's EXIF rewritten with with a $squeeze_factor Squeeze factor\n"