"""Tests for distutils.command.register."""
import os
import unittest
import getpass
import urllib
import warnings


from .py38compat import check_warnings

from distutils.command import register as register_module
from distutils.command.register import register
from distutils.errors import DistutilsSetupError
from distutils.log import INFO

from distutils.tests.test_config import BasePyPIRCCommandTestCase
import pytest

try:
    import docutils
except ImportError:
    docutils = None

PYPIRC_NOPASSWORD = """\
[distutils]

index-servers =
    server1

[server1]
username:me
"""

WANTED_PYPIRC = """\
[distutils]
index-servers =
    pypi

[pypi]
username:tarek
password:password
"""


class Inputs:
    """Fakes user inputs."""

    def __init__(self, *answers):
        self.answers = answers
        self.index = 0

    def __call__(self, prompt=''):
        try:
            return self.answers[self.index]
        finally:
            self.index += 1


class FakeOpener:
    """Fakes a PyPI server"""

    def __init__(self):
        self.reqs = []

    def __call__(self, *args):
        return self

    def open(self, req, data=None, timeout=None):
        self.reqs.append(req)
        return self

    def read(self):
        return b'xxx'

    def getheader(self, name, default=None):
        return {
            'content-type': 'text/plain; charset=utf-8',
        }.get(name.lower(), default)


class RegisterTestCase(BasePyPIRCCommandTestCase):
    def setUp(self):
        super().setUp()
        # patching the password prompt
        self._old_getpass = getpass.getpass

        def _getpass(prompt):
            return 'password'

        getpass.getpass = _getpass
        urllib.request._opener = None
        self.old_opener = urllib.request.build_opener
        self.conn = urllib.request.build_opener = FakeOpener()

    def tearDown(self):
        getpass.getpass = self._old_getpass
        urllib.request._opener = None
        urllib.request.build_opener = self.old_opener
        super().tearDown()

    def _get_cmd(self, metadata=None):
        if metadata is None:
            metadata = {
                'url': 'xxx',
                'author': 'xxx',
                'author_email': 'xxx',
                'name': 'xxx',
                'version': 'xxx',
            }
        pkg_info, dist = self.create_dist(**metadata)
        return register(dist)

    def test_create_pypirc(self):
        # this test makes sure a .pypirc file
        # is created when requested.

        # let's create a register instance
        cmd = self._get_cmd()

        # we shouldn't have a .pypirc file yet
        assert not os.path.exists(self.rc)

        # patching input and getpass.getpass
        # so register gets happy
        #
        # Here's what we are faking :
        # use your existing login (choice 1.)
        # Username : 'tarek'
        # Password : 'password'
        # Save your login (y/N)? : 'y'
        inputs = Inputs('1', 'tarek', 'y')
        register_module.input = inputs.__call__
        # let's run the command
        try:
            cmd.run()
        finally:
            del register_module.input

        # we should have a brand new .pypirc file
        assert os.path.exists(self.rc)

        # with the content similar to WANTED_PYPIRC
        f = open(self.rc)
        try:
            content = f.read()
            assert content == WANTED_PYPIRC
        finally:
            f.close()

        # now let's make sure the .pypirc file generated
        # really works : we shouldn't be asked anything
        # if we run the command again
        def _no_way(prompt=''):
            raise AssertionError(prompt)

        register_module.input = _no_way

        cmd.show_response = 1
        cmd.run()

        # let's see what the server received : we should
        # have 2 similar requests
        assert len(self.conn.reqs) == 2
        req1 = dict(self.conn.reqs[0].headers)
        req2 = dict(self.conn.reqs[1].headers)

        assert req1['Content-length'] == '1359'
        assert req2['Content-length'] == '1359'
        assert b'xxx' in self.conn.reqs[1].data

    def test_password_not_in_file(self):

        self.write_file(self.rc, PYPIRC_NOPASSWORD)
        cmd = self._get_cmd()
        cmd._set_config()
        cmd.finalize_options()
        cmd.send_metadata()

        # dist.password should be set
        # therefore used afterwards by other commands
        assert cmd.distribution.password == 'password'

    def test_registering(self):
        # this test runs choice 2
        cmd = self._get_cmd()
        inputs = Inputs('2', 'tarek', 'tarek@ziade.org')
        register_module.input = inputs.__call__
        try:
            # let's run the command
            cmd.run()
        finally:
            del register_module.input

        # we should have send a request
        assert len(self.conn.reqs) == 1
        req = self.conn.reqs[0]
        headers = dict(req.headers)
        assert headers['Content-length'] == '608'
        assert b'tarek' in req.data

    def test_password_reset(self):
        # this test runs choice 3
        cmd = self._get_cmd()
        inputs = Inputs('3', 'tarek@ziade.org')
        register_module.input = inputs.__call__
        try:
            # let's run the command
            cmd.run()
        finally:
            del register_module.input

        # we should have send a request
        assert len(self.conn.reqs) == 1
        req = self.conn.reqs[0]
        headers = dict(req.headers)
        assert headers['Content-length'] == '290'
        assert b'tarek' in req.data

    @unittest.skipUnless(docutils is not None, 'needs docutils')
    def test_strict(self):
        # testing the script option
        # when on, the register command stops if
        # the metadata is incomplete or if
        # long_description is not reSt compliant

        # empty metadata
        cmd = self._get_cmd({})
        cmd.ensure_finalized()
        cmd.strict = 1
        with pytest.raises(DistutilsSetupError):
            cmd.run()

        # metadata are OK but long_description is broken
        metadata = {
            'url': 'xxx',
            'author': 'xxx',
            'author_email': 'éxéxé',
            'name': 'xxx',
            'version': 'xxx',
            'long_description': 'title\n==\n\ntext',
        }

        cmd = self._get_cmd(metadata)
        cmd.ensure_finalized()
        cmd.strict = 1
        with pytest.raises(DistutilsSetupError):
            cmd.run()

        # now something that works
        metadata['long_description'] = 'title\n=====\n\ntext'
        cmd = self._get_cmd(metadata)
        cmd.ensure_finalized()
        cmd.strict = 1
        inputs = Inputs('1', 'tarek', 'y')
        register_module.input = inputs.__call__
        # let's run the command
        try:
            cmd.run()
        finally:
            del register_module.input

        # strict is not by default
        cmd = self._get_cmd()
        cmd.ensure_finalized()
        inputs = Inputs('1', 'tarek', 'y')
        register_module.input = inputs.__call__
        # let's run the command
        try:
            cmd.run()
        finally:
            del register_module.input

        # and finally a Unicode test (bug #12114)
        metadata = {
            'url': 'xxx',
            'author': '\u00c9ric',
            'author_email': 'xxx',
            'name': 'xxx',
            'version': 'xxx',
            'description': 'Something about esszet \u00df',
            'long_description': 'More things about esszet \u00df',
        }

        cmd = self._get_cmd(metadata)
        cmd.ensure_finalized()
        cmd.strict = 1
        inputs = Inputs('1', 'tarek', 'y')
        register_module.input = inputs.__call__
        # let's run the command
        try:
            cmd.run()
        finally:
            del register_module.input

    @unittest.skipUnless(docutils is not None, 'needs docutils')
    def test_register_invalid_long_description(self):
        description = ':funkie:`str`'  # mimic Sphinx-specific markup
        metadata = {
            'url': 'xxx',
            'author': 'xxx',
            'author_email': 'xxx',
            'name': 'xxx',
            'version': 'xxx',
            'long_description': description,
        }
        cmd = self._get_cmd(metadata)
        cmd.ensure_finalized()
        cmd.strict = True
        inputs = Inputs('2', 'tarek', 'tarek@ziade.org')
        register_module.input = inputs
        self.addCleanup(delattr, register_module, 'input')

        with pytest.raises(DistutilsSetupError):
            cmd.run()

    def test_check_metadata_deprecated(self):
        # makes sure make_metadata is deprecated
        cmd = self._get_cmd()
        with check_warnings() as w:
            warnings.simplefilter("always")
            cmd.check_metadata()
            assert len(w.warnings) == 1

    def test_list_classifiers(self):
        cmd = self._get_cmd()
        cmd.list_classifiers = 1
        cmd.run()
        results = self.get_logs(INFO)
        assert results == ['running check', 'xxx']

    def test_show_response(self):
        # test that the --show-response option return a well formatted response
        cmd = self._get_cmd()
        inputs = Inputs('1', 'tarek', 'y')
        register_module.input = inputs.__call__
        cmd.show_response = 1
        try:
            cmd.run()
        finally:
            del register_module.input

        results = self.get_logs(INFO)
        assert results[3] == 75 * '-' + '\nxxx\n' + 75 * '-'
