import platform
import textwrap

import pytest

from . import utils
from . import test_projects

# TODO: specify these at runtime according to manylinux_image
project_with_manylinux_symbols = test_projects.new_c_project(
    spam_c_top_level_add=textwrap.dedent(r'''
        #include <malloc.h>

        #if !defined(__GLIBC_PREREQ)
        #error "Must run on a glibc linux environment"
        #endif

        #if !__GLIBC_PREREQ(2, 5)  /* manylinux1 is glibc 2.5 */
        #error "Must run on a glibc >= 2.5 linux environment"
        #endif
    '''),
    spam_c_function_add=textwrap.dedent(r'''
        #if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 17)  /* manylinux2014 is glibc 2.17 */
            // secure_getenv is only available in manylinux2014, ensuring
            // that only a manylinux2014 wheel is produced
            secure_getenv("NON_EXISTING_ENV_VARIABLE");
        #elif defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)  /* manylinux2010 is glibc 2.12 */
            // malloc_info is only available on manylinux2010+
            malloc_info(0, stdout);
        #endif
    '''),
)


@pytest.mark.parametrize('manylinux_image', ['manylinux1', 'manylinux2010', 'manylinux2014'])
def test(manylinux_image, tmp_path):
    if utils.platform != 'linux':
        pytest.skip('the docker test is only relevant to the linux build')
    elif platform.machine() not in ['x86_64', 'i686']:
        if manylinux_image in ['manylinux1', 'manylinux2010']:
            pytest.skip("manylinux1 and 2010 doesn't exist for non-x86 architectures")

    project_dir = tmp_path / 'project'
    project_with_manylinux_symbols.generate(project_dir)

    # build the wheels
    # CFLAGS environment variable is necessary to fail on 'malloc_info' (on manylinux1) during compilation/linking,
    # rather than when dynamically loading the Python
    add_env = {
        'CIBW_ENVIRONMENT': 'CFLAGS="$CFLAGS -Werror=implicit-function-declaration"',
        'CIBW_MANYLINUX_X86_64_IMAGE': manylinux_image,
        'CIBW_MANYLINUX_I686_IMAGE': manylinux_image,
        'CIBW_MANYLINUX_PYPY_X86_64_IMAGE': manylinux_image,
        'CIBW_MANYLINUX_AARCH64_IMAGE': manylinux_image,
        'CIBW_MANYLINUX_PPC64LE_IMAGE': manylinux_image,
        'CIBW_MANYLINUX_S390X_IMAGE': manylinux_image,
    }
    if manylinux_image == 'manylinux1':
        # We don't have a manylinux1 image for PyPy
        add_env['CIBW_SKIP'] = 'pp*'
    elif manylinux_image == 'manylinux2014':
        # We don't have a manylinux2014 image for PyPy (yet?)
        add_env['CIBW_SKIP'] = 'cp27* pp*'  # Python 2.7 not available on manylinux2014
    actual_wheels = utils.cibuildwheel_run(project_dir, add_env=add_env)

    expected_wheels = [w for w in utils.expected_wheels('spam', '0.1.0', manylinux_versions=[manylinux_image])]
    if manylinux_image == 'manylinux2014':
        expected_wheels = [w for w in expected_wheels if '-cp27' not in w]
    if manylinux_image in ['manylinux1', 'manylinux2014']:
        expected_wheels = [w for w in expected_wheels if '-pp' not in w]
    assert set(actual_wheels) == set(expected_wheels)