import os

from pathlib import Path

import pytest

from poetry.__version__ import __version__
from poetry.core.packages.package import Package
from poetry.core.semver.version import Version
from poetry.utils._compat import WINDOWS


FIXTURES = Path(__file__).parent.joinpath("fixtures")


@pytest.fixture()
def tester(command_tester_factory):
    return command_tester_factory("self update")


def test_self_update_should_install_all_necessary_elements(
    tester, http, mocker, environ, tmp_dir
):
    os.environ["POETRY_HOME"] = tmp_dir

    command = tester.command

    version = Version.parse(__version__).next_minor.text
    mocker.patch(
        "poetry.repositories.pypi_repository.PyPiRepository.find_packages",
        return_value=[Package("poetry", version)],
    )
    mocker.patch.object(command, "_check_recommended_installation", return_value=None)
    mocker.patch.object(
        command, "_get_release_name", return_value="poetry-{}-darwin".format(version)
    )
    mocker.patch("subprocess.check_output", return_value=b"Python 3.8.2")

    http.register_uri(
        "GET",
        command.BASE_URL + "/{}/poetry-{}-darwin.sha256sum".format(version, version),
        body=FIXTURES.joinpath("poetry-1.0.5-darwin.sha256sum").read_bytes(),
    )
    http.register_uri(
        "GET",
        command.BASE_URL + "/{}/poetry-{}-darwin.tar.gz".format(version, version),
        body=FIXTURES.joinpath("poetry-1.0.5-darwin.tar.gz").read_bytes(),
    )

    tester.execute()

    bin_ = Path(tmp_dir).joinpath("bin")
    lib = Path(tmp_dir).joinpath("lib")
    assert bin_.exists()

    script = bin_.joinpath("poetry")
    assert script.exists()

    expected_script = """\
# -*- coding: utf-8 -*-
import glob
import sys
import os

lib = os.path.normpath(os.path.join(os.path.realpath(__file__), "../..", "lib"))
vendors = os.path.join(lib, "poetry", "_vendor")
current_vendors = os.path.join(
    vendors, "py{}".format(".".join(str(v) for v in sys.version_info[:2]))
)
sys.path.insert(0, lib)
sys.path.insert(0, current_vendors)

if __name__ == "__main__":
    from poetry.console import main
    main()
"""
    if not WINDOWS:
        expected_script = "#!/usr/bin/env python\n" + expected_script

    assert expected_script == script.read_text()

    if WINDOWS:
        bat = bin_.joinpath("poetry.bat")
        expected_bat = '@echo off\r\npython "{}" %*\r\n'.format(
            str(script).replace(os.environ.get("USERPROFILE", ""), "%USERPROFILE%")
        )
        assert bat.exists()
        with bat.open(newline="") as f:
            assert expected_bat == f.read()

    assert lib.exists()
    assert lib.joinpath("poetry").exists()
