"""Exercise version-specific behavior in clean interpreters, not import stubs."""

import os
from pathlib import Path
import subprocess
import sys

import pytest

ROOT = Path(__file__).resolve().parents[1]

def run_python(code):
  env = os.environ.copy()
  env['PYTHONPATH'] = os.pathsep.join([str(ROOT / 'cli'), str(ROOT)])
  # Test the module opt-ins, independently of global import/color settings.
  env.pop('PYTHON_LAZY_IMPORTS', None)
  env['NO_COLOR'] = '1'
  return subprocess.run(
    [sys.executable, '-c', code], cwd=ROOT, env=env,
    capture_output=True, text=True, check=True,
  )

def test_cli_typo_suggests_command():
  result = run_python("""
from nanoshare_client.cli import main
try:
  main(['uplod'])
except SystemExit as exc:
  assert exc.code == 2
""")
  assert "maybe you meant 'upload'" in result.stderr

@pytest.mark.skipif(sys.version_info < (3, 15), reason='PEP 810 requires Python 3.15')
def test_help_and_completion_do_not_load_network_or_watch_modules():
  run_python("""
import sys
from nanoshare_client.cli import main
try:
  main(['--help'])
except SystemExit as exc:
  assert exc.code == 0
assert main(['completion', 'bash']) == 0
for name in ('httpx', 'nanoshare_client.auth', 'nanoshare_client.sync', 'nanoshare_client.watch'):
  assert name not in sys.modules, name
""")

@pytest.mark.skipif(sys.version_info < (3, 15), reason='PEP 810 requires Python 3.15')
def test_qr_import_is_lazy_but_rendering_still_works():
  run_python("""
import sys
from link_composer.qr import make_qr_png
assert 'qrcode' not in sys.modules
assert make_qr_png('https://example.com').startswith(b'\\x89PNG')
assert 'qrcode' in sys.modules
""")

def test_deferred_annotations_resolve_to_types():
  run_python("""
from typing import get_type_hints
from my_modules.upload_content import MultipartUploadParts, parse_multipart_upload_body
assert not isinstance(parse_multipart_upload_body.__annotations__['return'], str)
assert get_type_hints(parse_multipart_upload_body)['return'] is MultipartUploadParts
""")