#!/usr/bin/env bash
# Remove content/<section>/*.md (zettels and bibliography) 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
content="$(cd "$(dirname "$0")" && pwd)/content"
sections=(zettels book phdthesis inbook techreport article inproceedings websites)

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