"""Tests for the GitHubConfig class in github_search_text_in_repo.config module."""  # noqa: E501

from unittest.mock import MagicMock, patch

from config import GitHubConfig
from pydantic import ValidationError
from pytest import MonkeyPatch, raises


def test_creates_github_config_with_valid_env_vars(
    monkeypatch: MonkeyPatch,
) -> None:  # noqa: E501
    """Test that GitHubConfig is created successfully when all required environment variables are set.

    :param monkeypatch:
    :return:
    """  # noqa: E501
    monkeypatch.setenv('GITHUB_TOKEN', 'ghp_123456')
    config = GitHubConfig()
    assert config.github_token == 'ghp_123456'


def test_raises_error_when_missing_required_env_vars(
    monkeypatch: MonkeyPatch,
) -> None:
    """Test that a ValidationError is raised when the GITHUB_TOKEN environment variable is missing.

    :param monkeypatch:
    :return:
    """  # noqa: E501
    monkeypatch.delenv('GITHUB_TOKEN', raising=False)
    with raises(ValidationError):
        GitHubConfig()


def test_fetches_token_from_secrets_manager_in_lambda(
    monkeypatch: MonkeyPatch,
) -> None:
    """In Lambda, GITHUB_TOKEN is treated as a secret name and token is fetched from Secrets Manager.

    :param monkeypatch:
    :return:
    """  # noqa: E501
    monkeypatch.setenv('AWS_LAMBDA_FUNCTION_NAME', 'github-cli')
    monkeypatch.setenv('GITHUB_TOKEN', 'my/secret/name')

    mock_client = MagicMock()
    mock_client.get_github_token.return_value = 'ghp_from_secrets_manager'

    with patch(
        'github_client.secrets_manager.SecretsManagerClient', return_value=mock_client
    ):
        config = GitHubConfig()

    mock_client.get_github_token.assert_called_once_with('my/secret/name')
    assert config.github_token == 'ghp_from_secrets_manager'


def test_does_not_call_secrets_manager_locally(
    monkeypatch: MonkeyPatch,
) -> None:
    """Locally (no AWS_LAMBDA_FUNCTION_NAME), Secrets Manager is never called.

    :param monkeypatch:
    :return:
    """
    monkeypatch.delenv('AWS_LAMBDA_FUNCTION_NAME', raising=False)
    monkeypatch.setenv('GITHUB_TOKEN', 'ghp_local_token')

    with patch('github_client.secrets_manager.SecretsManagerClient') as mock_cls:
        config = GitHubConfig()

    mock_cls.assert_not_called()
    assert config.github_token == 'ghp_local_token'