#!/usr/bin/env python3
"""Print the FDS version derived from release tags or a Git source export."""
import argparse
import subprocess
from pathlib import Path
from fds_version import ROOT, cargo, version

parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('--root', type=Path, default=ROOT)
parser.add_argument('--cargo', action='store_true', help='emit Cargo build metadata and change tracking')
args = parser.parse_args()
try:
    if args.cargo:
        cargo(args.root.resolve())
    else:
        print(version(args.root))
except (OSError, ValueError, subprocess.CalledProcessError) as error:
    parser.exit(1, f'Cannot determine FDS version: {error}\n')