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"""wheel tests"""

from __future__ import annotations

import contextlib
import glob
import inspect
import os
import pathlib
import shutil
import stat
import subprocess
import sys
import zipfile
from typing import Any

import pytest
from jaraco import path
from packaging.tags import parse_tag
from packaging.utils import canonicalize_name

from pkg_resources import PY_MAJOR, Distribution, PathMetadata
from setuptools.wheel import Wheel

from .contexts import tempdir
from .textwrap import DALS

from distutils.sysconfig import get_config_var
from distutils.util import get_platform

WHEEL_INFO_TESTS = (
    ('invalid.whl', ValueError),
    (
        'simplewheel-2.0-1-py2.py3-none-any.whl',
        {
            'project_name': 'simplewheel',
            'version': '2.0',
            'build': '1',
            'py_version': 'py2.py3',
            'abi': 'none',
            'platform': 'any',
        },
    ),
    (
        'simple.dist-0.1-py2.py3-none-any.whl',
        {
            'project_name': 'simple.dist',
            'version': '0.1',
            'build': None,
            'py_version': 'py2.py3',
            'abi': 'none',
            'platform': 'any',
        },
    ),
    (
        'example_pkg_a-1-py3-none-any.whl',
        {
            'project_name': 'example_pkg_a',
            'version': '1',
            'build': None,
            'py_version': 'py3',
            'abi': 'none',
            'platform': 'any',
        },
    ),
    (
        'PyQt5-5.9-5.9.1-cp35.cp36.cp37-abi3-manylinux1_x86_64.whl',
        {
            'project_name': 'PyQt5',
            'version': '5.9',
            'build': '5.9.1',
            'py_version': 'cp35.cp36.cp37',
            'abi': 'abi3',
            'platform': 'manylinux1_x86_64',
        },
    ),
)


@pytest.mark.parametrize(
    ('filename', 'info'), WHEEL_INFO_TESTS, ids=[t[0] for t in WHEEL_INFO_TESTS]
)
def test_wheel_info(filename, info):
    if inspect.isclass(info):
        with pytest.raises(info):
            Wheel(filename)
        return
    w = Wheel(filename)
    assert {k: getattr(w, k) for k in info.keys()} == info


@contextlib.contextmanager
def build_wheel(extra_file_defs=None, **kwargs):
    file_defs = {
        'setup.py': (
            DALS(
                """
            # -*- coding: utf-8 -*-
            from setuptools import setup
            import setuptools
            setup(**%r)
            """
            )
            % kwargs
        ).encode('utf-8'),
    }
    if extra_file_defs:
        file_defs.update(extra_file_defs)
    with tempdir() as source_dir:
        path.build(file_defs, source_dir)
        subprocess.check_call(
            (sys.executable, 'setup.py', '-q', 'bdist_wheel'), cwd=source_dir
        )
        yield glob.glob(os.path.join(source_dir, 'dist', '*.whl'))[0]


def tree_set(root):
    contents = set()
    for dirpath, dirnames, filenames in os.walk(root):
        for filename in filenames:
            contents.add(os.path.join(os.path.relpath(dirpath, root), filename))
    return contents


def flatten_tree(tree):
    """Flatten nested dicts and lists into a full list of paths"""
    output = set()
    for node, contents in tree.items():
        if isinstance(contents, dict):
            contents = flatten_tree(contents)

        for elem in contents:
            if isinstance(elem, dict):
                output |= {os.path.join(node, val) for val in flatten_tree(elem)}
            else:
                output.add(os.path.join(node, elem))
    return output


def format_install_tree(tree):
    return {
        x.format(
            py_version=PY_MAJOR,
            platform=get_platform(),
            shlib_ext=get_config_var('EXT_SUFFIX') or get_config_var('SO'),
        )
        for x in tree
    }


def _check_wheel_install(
    filename, install_dir, install_tree_includes, project_name, version, requires_txt
):
    w = Wheel(filename)
    egg_path = os.path.join(install_dir, w.egg_name())
    w.install_as_egg(egg_path)
    if install_tree_includes is not None:
        install_tree = format_install_tree(install_tree_includes)
        exp = tree_set(install_dir)
        assert install_tree.issubset(exp), install_tree - exp

    metadata = PathMetadata(egg_path, os.path.join(egg_path, 'EGG-INFO'))
    dist = Distribution.from_filename(egg_path, metadata=metadata)
    assert dist.project_name == project_name
    assert dist.version == version
    if requires_txt is None:
        assert not dist.has_metadata('requires.txt')
    else:
        # Order must match to ensure reproducibility.
        assert requires_txt == dist.get_metadata('requires.txt').lstrip()


class Record:
    def __init__(self, id, **kwargs):
        self._id = id
        self._fields = kwargs

    def __repr__(self) -> str:
        return f'{self._id}(**{self._fields!r})'


# Using Any to avoid possible type union issues later in test
# making a TypedDict is not worth in a test and anonymous/inline TypedDict are experimental
# https://github.com/python/mypy/issues/9884
WHEEL_INSTALL_TESTS: tuple[dict[str, Any], ...] = (
    dict(
        id='basic',
        file_defs={'foo': {'__init__.py': ''}},
        setup_kwargs=dict(
            packages=['foo'],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': {
                'EGG-INFO': ['PKG-INFO', 'RECORD', 'WHEEL', 'top_level.txt'],
                'foo': ['__init__.py'],
            }
        }),
    ),
    dict(
        id='utf-8',
        setup_kwargs=dict(
            description='Description accentuée',
        ),
    ),
    dict(
        id='data',
        file_defs={
            'data.txt': DALS(
                """
                Some data...
                """
            ),
        },
        setup_kwargs=dict(
            data_files=[('data_dir', ['data.txt'])],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': {
                'EGG-INFO': ['PKG-INFO', 'RECORD', 'WHEEL', 'top_level.txt'],
                'data_dir': ['data.txt'],
            }
        }),
    ),
    dict(
        id='extension',
        file_defs={
            'extension.c': DALS(
                """
                #include "Python.h"

                #if PY_MAJOR_VERSION >= 3

                static struct PyModuleDef moduledef = {
                        PyModuleDef_HEAD_INIT,
                        "extension",
                        NULL,
                        0,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL
                };

                #define INITERROR return NULL

                PyMODINIT_FUNC PyInit_extension(void)

                #else

                #define INITERROR return

                void initextension(void)

                #endif
                {
                #if PY_MAJOR_VERSION >= 3
                    PyObject *module = PyModule_Create(&moduledef);
                #else
                    PyObject *module = Py_InitModule("extension", NULL);
                #endif
                    if (module == NULL)
                        INITERROR;
                #if PY_MAJOR_VERSION >= 3
                    return module;
                #endif
                }
                """
            ),
        },
        setup_kwargs=dict(
            ext_modules=[
                Record(
                    'setuptools.Extension', name='extension', sources=['extension.c']
                )
            ],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}-{platform}.egg': [
                'extension{shlib_ext}',
                {
                    'EGG-INFO': [
                        'PKG-INFO',
                        'RECORD',
                        'WHEEL',
                        'top_level.txt',
                    ]
                },
            ]
        }),
    ),
    dict(
        id='header',
        file_defs={
            'header.h': DALS(
                """
                """
            ),
        },
        setup_kwargs=dict(
            headers=['header.h'],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': [
                'header.h',
                {
                    'EGG-INFO': [
                        'PKG-INFO',
                        'RECORD',
                        'WHEEL',
                        'top_level.txt',
                    ]
                },
            ]
        }),
    ),
    dict(
        id='script',
        file_defs={
            'script.py': DALS(
                """
                #/usr/bin/python
                print('hello world!')
                """
            ),
            'script.sh': DALS(
                """
                #/bin/sh
                echo 'hello world!'
                """
            ),
        },
        setup_kwargs=dict(
            scripts=['script.py', 'script.sh'],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': {
                'EGG-INFO': [
                    'PKG-INFO',
                    'RECORD',
                    'WHEEL',
                    'top_level.txt',
                    {'scripts': ['script.py', 'script.sh']},
                ]
            }
        }),
    ),
    dict(
        id='requires1',
        install_requires='foobar==2.0',
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': {
                'EGG-INFO': [
                    'PKG-INFO',
                    'RECORD',
                    'WHEEL',
                    'requires.txt',
                    'top_level.txt',
                ]
            }
        }),
        requires_txt=DALS(
            """
            foobar==2.0
            """
        ),
    ),
    dict(
        id='requires2',
        install_requires=f"""
        bar
        foo<=2.0; {sys.platform!r} in sys_platform
        """,
        requires_txt=DALS(
            """
            bar
            foo<=2.0
            """
        ),
    ),
    dict(
        id='requires3',
        install_requires=f"""
        bar; {sys.platform!r} != sys_platform
        """,
    ),
    dict(
        id='requires4',
        install_requires="""
        foo
        """,
        extras_require={
            'extra': 'foobar>3',
        },
        requires_txt=DALS(
            """
            foo

            [extra]
            foobar>3
            """
        ),
    ),
    dict(
        id='requires5',
        extras_require={
            'extra': f'foobar; {sys.platform!r} != sys_platform',
        },
        requires_txt=DALS(
            """
            [extra]
            """
        ),
    ),
    dict(
        id='requires_ensure_order',
        install_requires="""
        foo
        bar
        baz
        qux
        """,
        extras_require={
            'extra': """
            foobar>3
            barbaz>4
            bazqux>5
            quxzap>6
            """,
        },
        requires_txt=DALS(
            """
            foo
            bar
            baz
            qux

            [extra]
            foobar>3
            barbaz>4
            bazqux>5
            quxzap>6
            """
        ),
    ),
    dict(
        id='namespace_package',
        file_defs={
            'foo': {
                'bar': {'__init__.py': ''},
            },
        },
        setup_kwargs=dict(
            namespace_packages=['foo'],
            packages=['foo.bar'],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': [
                'foo-1.0-py{py_version}-nspkg.pth',
                {
                    'EGG-INFO': [
                        'PKG-INFO',
                        'RECORD',
                        'WHEEL',
                        'namespace_packages.txt',
                        'top_level.txt',
                    ]
                },
                {
                    'foo': [
                        '__init__.py',
                        {'bar': ['__init__.py']},
                    ]
                },
            ]
        }),
    ),
    dict(
        id='empty_namespace_package',
        file_defs={
            'foobar': {
                '__init__.py': (
                    "__import__('pkg_resources').declare_namespace(__name__)"
                )
            },
        },
        setup_kwargs=dict(
            namespace_packages=['foobar'],
            packages=['foobar'],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': [
                'foo-1.0-py{py_version}-nspkg.pth',
                {
                    'EGG-INFO': [
                        'PKG-INFO',
                        'RECORD',
                        'WHEEL',
                        'namespace_packages.txt',
                        'top_level.txt',
                    ]
                },
                {
                    'foobar': [
                        '__init__.py',
                    ]
                },
            ]
        }),
    ),
    dict(
        id='data_in_package',
        file_defs={
            'foo': {
                '__init__.py': '',
                'data_dir': {
                    'data.txt': DALS(
                        """
                        Some data...
                        """
                    ),
                },
            }
        },
        setup_kwargs=dict(
            packages=['foo'],
            data_files=[('foo/data_dir', ['foo/data_dir/data.txt'])],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': {
                'EGG-INFO': [
                    'PKG-INFO',
                    'RECORD',
                    'WHEEL',
                    'top_level.txt',
                ],
                'foo': [
                    '__init__.py',
                    {
                        'data_dir': [
                            'data.txt',
                        ]
                    },
                ],
            }
        }),
    ),
)


@pytest.mark.parametrize(
    'params',
    WHEEL_INSTALL_TESTS,
    ids=[params['id'] for params in WHEEL_INSTALL_TESTS],
)
def test_wheel_install(params):
    project_name = params.get('name', 'foo')
    version = params.get('version', '1.0')
    install_requires = params.get('install_requires', [])
    extras_require = params.get('extras_require', {})
    requires_txt = params.get('requires_txt', None)
    install_tree = params.get('install_tree')
    file_defs = params.get('file_defs', {})
    setup_kwargs = params.get('setup_kwargs', {})
    with (
        build_wheel(
            name=project_name,
            version=version,
            install_requires=install_requires,
            extras_require=extras_require,
            extra_file_defs=file_defs,
            **setup_kwargs,
        ) as filename,
        tempdir() as install_dir,
    ):
        _check_wheel_install(
            filename, install_dir, install_tree, project_name, version, requires_txt
        )


def test_wheel_install_pep_503():
    project_name = 'Foo_Bar'  # PEP 503 canonicalized name is "foo-bar"
    version = '1.0'
    with (
        build_wheel(
            name=project_name,
            version=version,
        ) as filename,
        tempdir() as install_dir,
    ):
        new_filename = filename.replace(project_name, canonicalize_name(project_name))
        shutil.move(filename, new_filename)
        _check_wheel_install(
            new_filename,
            install_dir,
            None,
            canonicalize_name(project_name),
            version,
            None,
        )


def test_wheel_no_dist_dir():
    project_name = 'nodistinfo'
    version = '1.0'
    wheel_name = f'{project_name}-{version}-py2.py3-none-any.whl'
    with tempdir() as source_dir:
        wheel_path = os.path.join(source_dir, wheel_name)
        # create an empty zip file
        zipfile.ZipFile(wheel_path, 'w').close()
        with tempdir() as install_dir:
            with pytest.raises(ValueError):
                _check_wheel_install(
                    wheel_path, install_dir, None, project_name, version, None
                )


def test_wheel_is_compatible(monkeypatch):
    def sys_tags():
        return {
            (t.interpreter, t.abi, t.platform)
            for t in parse_tag('cp36-cp36m-manylinux1_x86_64')
        }

    monkeypatch.setattr('setuptools.wheel._get_supported_tags', sys_tags)
    assert Wheel('onnxruntime-0.1.2-cp36-cp36m-manylinux1_x86_64.whl').is_compatible()


def test_wheel_mode():
    @contextlib.contextmanager
    def build_wheel(extra_file_defs=None, **kwargs):
        file_defs = {
            'setup.py': (
                DALS(
                    """
                # -*- coding: utf-8 -*-
                from setuptools import setup
                import setuptools
                setup(**%r)
                """
                )
                % kwargs
            ).encode('utf-8'),
        }
        if extra_file_defs:
            file_defs.update(extra_file_defs)
        with tempdir() as source_dir:
            path.build(file_defs, source_dir)
            runsh = pathlib.Path(source_dir) / "script.sh"
            os.chmod(runsh, 0o777)
            subprocess.check_call(
                (sys.executable, 'setup.py', '-q', 'bdist_wheel'), cwd=source_dir
            )
            yield glob.glob(os.path.join(source_dir, 'dist', '*.whl'))[0]

    params = dict(
        id='script',
        file_defs={
            'script.py': DALS(
                """
                #/usr/bin/python
                print('hello world!')
                """
            ),
            'script.sh': DALS(
                """
                #/bin/sh
                echo 'hello world!'
                """
            ),
        },
        setup_kwargs=dict(
            scripts=['script.py', 'script.sh'],
        ),
        install_tree=flatten_tree({
            'foo-1.0-py{py_version}.egg': {
                'EGG-INFO': [
                    'PKG-INFO',
                    'RECORD',
                    'WHEEL',
                    'top_level.txt',
                    {'scripts': ['script.py', 'script.sh']},
                ]
            }
        }),
    )

    project_name = params.get('name', 'foo')
    version = params.get('version', '1.0')
    install_tree = params.get('install_tree')
    file_defs = params.get('file_defs', {})
    setup_kwargs = params.get('setup_kwargs', {})

    with (
        build_wheel(
            name=project_name,
            version=version,
            install_requires=[],
            extras_require={},
            extra_file_defs=file_defs,
            **setup_kwargs,
        ) as filename,
        tempdir() as install_dir,
    ):
        _check_wheel_install(
            filename, install_dir, install_tree, project_name, version, None
        )
        w = Wheel(filename)
        base = pathlib.Path(install_dir) / w.egg_name()
        script_sh = base / "EGG-INFO" / "scripts" / "script.sh"
        assert script_sh.exists()
        if sys.platform != 'win32':
            # Editable file mode has no effect on Windows
            assert oct(stat.S_IMODE(script_sh.stat().st_mode)) == "0o777"