import os
import subprocess
import sys
from dataclasses import replace

import pytest

from parser_lab.auth import Auth, Unauthorized
from parser_lab.config import Settings
from parser_lab.repository import Repository
from parser_lab import cli


def settings_from_env(monkeypatch, tmp_path):
    monkeypatch.setenv('LAB_ADMIN_USER', 'teacher')
    monkeypatch.setenv('LAB_ADMIN_PASSWORD', "мой пароль $ # ' \\ test")
    monkeypatch.setenv('LAB_SECRET', 'test-secret-at-least-32-characters')
    monkeypatch.setenv('LAB_DATA_DIR', str(tmp_path / 'data'))
    monkeypatch.delenv('LAB_ADMIN_HASH', raising=False)
    return Settings.from_env()


def test_password_env_login_restart_and_change(monkeypatch, tmp_path):
    settings = settings_from_env(monkeypatch, tmp_path)
    password = os.environ['LAB_ADMIN_PASSWORD']
    assert password not in repr(settings)
    repo = Repository(settings.data_dir)
    auth = Auth(settings, repo)
    token = auth.login('teacher', password, 'client')
    assert Auth(Settings.from_env(), repo).check(token) == token
    with pytest.raises(Unauthorized):
        auth.login('teacher', password + 'x', 'client')
    changed = Auth(replace(settings, password='replacement-password'), repo)
    with pytest.raises(Unauthorized):
        changed.check(token)
    with pytest.raises(Unauthorized):
        changed.login('teacher', password, 'client')
    assert changed.login('teacher', 'replacement-password', 'client')


@pytest.mark.parametrize('password', ['', 'short'])
def test_invalid_env_password(monkeypatch, tmp_path, password):
    settings_from_env(monkeypatch, tmp_path)
    monkeypatch.setenv('LAB_ADMIN_PASSWORD', password)
    with pytest.raises(ValueError, match='LAB_ADMIN_PASSWORD'):
        Settings.from_env()


def test_init_env_plaintext_password_loads_with_uv(monkeypatch, tmp_path):
    path = tmp_path / '.env'
    password = "тест $HOME ${UNKNOWN} # ' \\ end"
    monkeypatch.setattr(sys, 'argv', ['cli', 'init-env', '--path', str(path)])
    monkeypatch.setattr('builtins.input', lambda _: 'teacher')
    monkeypatch.setattr(cli.getpass, 'getpass', lambda _: password)
    cli.main()
    text = path.read_text(encoding='utf-8')
    assert 'LAB_ADMIN_PASSWORD=' in text and 'LAB_ADMIN_HASH=' not in text
    env = {k: v for k, v in os.environ.items() if not k.startswith('LAB_')}
    env['EXPECTED_PASSWORD'] = password
    result = subprocess.run(
        ['uv', 'run', '--no-project', '--env-file', str(path), sys.executable, '-c',
         'import os; assert os.environ["LAB_ADMIN_PASSWORD"] == os.environ["EXPECTED_PASSWORD"]'],
        env=env, capture_output=True, text=True,
    )
    assert result.returncode == 0, result.stderr
    with pytest.raises(SystemExit, match='уже существует'):
        cli.main()