#!/usr/bin/env bash
set -euo pipefail

if [[ $# -ne 1 ]]; then
  echo "Usage: $0 <log-file>" >&2
  exit 1
fi

log_file="$1"

if [[ ! -f "$log_file" ]]; then
  echo "Error: file not found: $log_file" >&2
  exit 1
fi

backup_file="${log_file}.bak"
cp -f -- "$log_file" "$backup_file"

perl -0pi -e 's/\e\[[0-9;]*[A-Za-z]//g' -- "$log_file"

echo "ANSI escape codes stripped from $log_file"
echo "Backup saved to $backup_file"

# Usage: clean_ansi_log.sh /path/to/logfile.log