#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
REPO_ROOT=$(cd "${SCRIPT_DIR}/.." && pwd)
DEFAULT_SANDBOX="${REPO_ROOT}/../galaxyforge-sandbox"
SANDBOX_PATH="${1:-$DEFAULT_SANDBOX}"

if [[ "$SANDBOX_PATH" != /* ]]; then
  SANDBOX_PATH="${REPO_ROOT}/${SANDBOX_PATH}"
fi

SANDBOX_PATH=$(realpath -m "$SANDBOX_PATH")

if ! git -C "$REPO_ROOT" rev-parse --is-inside-work-tree >/dev/null 2>&1; then
  echo "Fehler: Repo-Root nicht gefunden: $REPO_ROOT" >&2
  exit 1
fi

if [[ -e "$SANDBOX_PATH" ]]; then
  echo "Fehler: Zielpfad existiert bereits: $SANDBOX_PATH" >&2
  echo "Tipp: Anderen Pfad angeben oder scripts/worktree-destroy.sh verwenden." >&2
  exit 1
fi

COMMIT=$(git -C "$REPO_ROOT" rev-parse HEAD)

git -C "$REPO_ROOT" worktree add --detach "$SANDBOX_PATH" "$COMMIT" >/dev/null

echo "Sandbox erstellt (detached HEAD) unter: $SANDBOX_PATH"
echo "Starten: bash \"$REPO_ROOT/scripts/worktree-up.sh\" \"$SANDBOX_PATH\""