# Clone a git repo as a full mirror and pack it into a zip archive.
# Works on macOS (uses ditto for native compression).

set -euo pipefail

if [ $# -lt 1 ]; then
  echo "Usage: $0 <git-repo-url> [output.zip]"
  exit 1
fi

URL="$1"
OUT="${2:-repo.zip}"
WORK_DIR=".tmp_git_mirror"

cleanup() { rm -rf "$WORK_DIR"; }
trap cleanup EXIT

echo "[1/3] Cloning mirror of $URL ..."
git clone --mirror "$URL" "$WORK_DIR"

echo "[2/3] Creating $OUT with maximum compression ..."
ditto -c -k --seedy --rsrc --keepParent "$WORK_DIR" "$OUT"

SIZE=$(du -m "$OUT" | cut -f1)
echo "[3/3] Done: $OUT (${SIZE} MB)"