# Pylint doesn't play well with fixtures and dependency injection from pytest
# pylint: disable=redefined-outer-name

import os

import pytest

from buildstream import _yaml

from buildstream.testing import cli_integration as cli  # pylint: disable=unused-import
from buildstream.testing.integration import assert_contains
from buildstream.testing._utils.site import HAVE_SANDBOX

from tests.testutils import setup_pypi_repo  # pylint: disable=unused-import


pytestmark = pytest.mark.integration


DATA_DIR = os.path.join(
    os.path.dirname(os.path.realpath(__file__)),
    "project"
)


@pytest.mark.datafiles(DATA_DIR)
@pytest.mark.skipif(not HAVE_SANDBOX, reason='Only available with a functioning sandbox')
def test_pip_build(cli, datafiles):
    project = str(datafiles)
    checkout = os.path.join(cli.directory, 'checkout')
    element_path = os.path.join(project, 'elements')
    element_name = 'pip/hello.bst'

    element = {
        'kind': 'pip',
        'variables': {
            'pip': 'pip3'
        },
        'depends': [{
            'filename': 'base.bst'
        }],
        'sources': [{
            'kind': 'tar',
            'url': 'file://{}/files/hello.tar.xz'.format(project),
            'ref': 'ad96570b552498807abec33c06210bf68378d854ced6753b77916c5ed517610d'

        }]
    }
    os.makedirs(os.path.dirname(os.path.join(element_path, element_name)), exist_ok=True)
    _yaml.dump(element, os.path.join(element_path, element_name))

    result = cli.run(project=project, args=['build', element_name])
    assert result.exit_code == 0

    result = cli.run(project=project, args=['artifact', 'checkout', element_name, '--directory', checkout])
    assert result.exit_code == 0

    assert_contains(checkout, ['/usr', '/usr/lib', '/usr/bin',
                               '/usr/bin/hello', '/usr/lib/python3.6'])


# Test running an executable built with pip
@pytest.mark.datafiles(DATA_DIR)
@pytest.mark.skipif(not HAVE_SANDBOX, reason='Only available with a functioning sandbox')
def test_pip_run(cli, datafiles):
    # Create and build our test element
    test_pip_build(cli, datafiles)

    project = str(datafiles)
    element_name = 'pip/hello.bst'

    result = cli.run(project=project, args=['shell', element_name, '/usr/bin/hello'])
    assert result.exit_code == 0
    assert result.output == 'Hello, world!\n'


@pytest.mark.datafiles(DATA_DIR)
@pytest.mark.skipif(not HAVE_SANDBOX, reason='Only available with a functioning sandbox')
def test_pip_element_should_install_pip_deps(cli, datafiles, setup_pypi_repo):
    project = str(datafiles)
    elements_path = os.path.join(project, 'elements')
    element_name = 'pip/hello.bst'

    # check that exotically named packages are imported correctly
    myreqs_packages = 'alohalib'
    dependencies = ['app2', 'app.3', 'app-4', 'app_5', 'app.no.6', 'app-no-7', 'app_no_8']
    mock_packages = {
        myreqs_packages: {
            package: {} for package in dependencies
        }
    }

    # set up directories
    pypi_repo = os.path.join(project, 'files', 'pypi-repo')
    os.makedirs(pypi_repo, exist_ok=True)
    os.makedirs(os.path.dirname(os.path.join(elements_path, element_name)), exist_ok=True)
    setup_pypi_repo(mock_packages, pypi_repo)

    # create pip element
    element = {
        'kind': 'pip',
        'variables': {
            'pip': 'pip3'
        },
        'depends': [{
            'filename': 'base.bst'
        }],
        'sources': [
            {
                'kind': 'tar',
                'url': 'file://{}/files/hello.tar.xz'.format(project),
                # FIXME: remove hardcoded ref once issue #1010 is closed
                'ref': 'ad96570b552498807abec33c06210bf68378d854ced6753b77916c5ed517610d'
            },
            {
                'kind': 'pip',
                'url': 'file://{}'.format(os.path.realpath(pypi_repo)),
                'packages': [myreqs_packages],
            }
        ]
    }
    _yaml.dump(element, os.path.join(elements_path, element_name))

    result = cli.run(project=project, args=['source', 'track', element_name])
    assert result.exit_code == 0

    result = cli.run(project=project, args=['build', element_name])
    assert result.exit_code == 0

    # get installed packages in sandbox
    installed_packages = set(
        cli.run(project=project, args=['shell', element_name, 'pip3', 'freeze']).output.split('\n'))
    # compare with packages that are expected to be installed
    pip_source_packages = {package.replace('_', "-") + '==0.1' for package in dependencies + [myreqs_packages]}
    assert pip_source_packages.issubset(installed_packages)