#!/usr/bin/env bash

set -euo pipefail

usage() {
  cat <<'EOF'
Usage:
  ./scripts/export-community.sh /path/to/crank-community-working-tree

The target directory must already be a git working tree for crank-community.
EOF
}

if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
  usage
  exit 0
fi

if [[ $# -ne 1 ]]; then
  usage >&2
  exit 1
fi

repo_root="$(git rev-parse --show-toplevel)"
target_dir="$(cd "$1" && pwd)"

if [[ ! -d "$target_dir/.git" ]]; then
  echo "target is not a git working tree: $target_dir" >&2
  exit 1
fi

find "$target_dir" -mindepth 1 -maxdepth 1 ! -name .git -exec rm -rf {} +

git -C "$repo_root" ls-files -z -- . ':(exclude)templates/repositories/**' \
  | rsync -a --delete --from0 --files-from=- "$repo_root/" "$target_dir/"