import io
import sys

import pytest
from flexmock import flexmock

from borgmatic.hooks.credential import container as module


@pytest.mark.parametrize('credential_parameters', ((), ('foo', 'bar')))
def test_load_credential_with_invalid_credential_parameters_raises(credential_parameters):
    with pytest.raises(ValueError):
        module.load_credential(
            hook_config={}, config={}, credential_parameters=credential_parameters
        )


def test_load_credential_with_invalid_secret_name_raises():
    with pytest.raises(ValueError):
        module.load_credential(
            hook_config={}, config={}, credential_parameters=('this is invalid',)
        )


def test_load_credential_reads_named_secret_from_file():
    credential_stream = io.StringIO('password')
    credential_stream.name = '/run/secrets/mysecret'
    builtins = flexmock(sys.modules['builtins'])
    builtins.should_receive('open').with_args('/run/secrets/mysecret').and_return(credential_stream)

    assert (
        module.load_credential(hook_config={}, config={}, credential_parameters=('mysecret',))
        == 'password'
    )


def test_load_credential_with_custom_secrets_directory_looks_there_for_secret_file():
    config = {'container': {'secrets_directory': '/secrets'}}
    credential_stream = io.StringIO('password')
    credential_stream.name = '/secrets/mysecret'
    builtins = flexmock(sys.modules['builtins'])
    builtins.should_receive('open').with_args('/secrets/mysecret').and_return(credential_stream)

    assert (
        module.load_credential(
            hook_config=config['container'], config=config, credential_parameters=('mysecret',)
        )
        == 'password'
    )


def test_load_credential_with_custom_secrets_directory_prefixes_it_with_working_directory():
    config = {'container': {'secrets_directory': 'secrets'}, 'working_directory': '/working'}
    credential_stream = io.StringIO('password')
    credential_stream.name = '/working/secrets/mysecret'
    builtins = flexmock(sys.modules['builtins'])
    builtins.should_receive('open').with_args('/working/secrets/mysecret').and_return(
        credential_stream
    )

    assert (
        module.load_credential(
            hook_config=config['container'], config=config, credential_parameters=('mysecret',)
        )
        == 'password'
    )


def test_load_credential_with_file_not_found_error_raises():
    builtins = flexmock(sys.modules['builtins'])
    builtins.should_receive('open').with_args('/run/secrets/mysecret').and_raise(FileNotFoundError)

    with pytest.raises(ValueError):
        module.load_credential(hook_config={}, config={}, credential_parameters=('mysecret',))