#!/usr/bin/env bash
# Remove content/zettels/*.md whose org source in ~/Cloud/brain no longer exists.
# Dry run by default; pass --delete to actually remove files.
set -euo pipefail

brain=~/Cloud/brain
zet="$(cd "$(dirname "$0")" && pwd)/content/zettels"

count=0
for md in "$zet"/*.md; do
  name=$(basename "$md" .md)
  [[ $name == _index ]] && continue
  if [[ ! -f "$brain/$name.org" ]]; then
    echo "orphan: $md"
    [[ ${1:-} == --delete ]] && rm "$md"
    count=$((count + 1))
  fi
done

if [[ $count -eq 0 ]]; then
  echo "No orphans."
elif [[ ${1:-} != --delete ]]; then
  echo "$count orphan(s). Re-run with --delete to remove them."
else
  echo "Removed $count file(s)."
fi