#!/usr/bin/env bash
# ==============================================================
#  Clean
# --------------------------------------------------------------
#  Author   : Kris Yotam (aka. khr1st)
#  Contact  : krisyotam@protonmail.com
#  License  : GNU GPLv3
#  Date     : 2025-12-04
# --------------------------------------------------------------
#  Description:
#    Interactive utility that walks directories under a given
#    Misc path and asks whether each file is "in use". Files
#    answered with 'n' (no) are queued for deletion and removed
#    at confirmation. This is intended to be invoked by `sort`.
# ==============================================================

set -eu

MISC_BASE="${1:-$HOME/Misc}"

if [ ! -d "$MISC_BASE" ]; then
  echo "Directory not found: $MISC_BASE" >&2
  exit 1
fi

declare -a TO_DELETE=()

prompt_yes_no() {
  # prompt_yes_no "Question" -> returns 0 for yes, 1 for no
  printf "%s [Y/n]: " "$1"
  IFS= read -r ans || ans=""
  case "$ans" in
    [nN]) return 1 ;;
    "") return 0 ;;
    [yY]|[yY][eE][sS]) return 0 ;;
    *) return 1 ;;
  esac
}

echo "Cleaning: $MISC_BASE"

for dir in "$MISC_BASE"/*; do
  [ -d "$dir" ] || continue
  echo "\nDirectory: $(basename "$dir")"
  for file in "$dir"/*; do
    [ -e "$file" ] || continue
    fname="$(basename "$file")"
    # Ask if file is being used. Default is Y (keep).
    printf "Is this file in use? %s\n" "$fname"
    if prompt_yes_no "Keep $fname?"; then
      echo "Keeping: $fname"
    else
      echo "Marked for deletion: $fname"
      TO_DELETE+=("$file")
    fi
  done
done

if [ ${#TO_DELETE[@]} -eq 0 ]; then
  echo "Nothing marked for deletion. Exiting."
  exit 0
fi

echo "\nSummary: ${#TO_DELETE[@]} files marked for deletion."
for f in "${TO_DELETE[@]}"; do
  echo "  $(realpath --relative-to="$HOME" "$f")"
done

if prompt_yes_no "Delete these files now?"; then
  for f in "${TO_DELETE[@]}"; do
    rm -f -- "$f" && echo "Deleted: $(basename "$f")"
  done
  echo "Deletion complete."
else
  echo "Aborted: no files were deleted."
fi