# -*- encoding: utf-8 -*-
import asyncio

from async_generator import asynccontextmanager
from bonsai import LDAPEntry
import mock
import pytest

from phi.async_ldap.new_model import get_dn, User
from phi.async_ldap.mixins import Member

BASE_DN = "dc=test,dc=domain,dc=tld"


class MockClient(object):
    def __init__(self, *args, **kwargs):
        self.return_value = kwargs.get("return_value")
        self.connect_called = False
        self.conn = mock.MagicMock()
        self.search_event = asyncio.Event()
        self.add_event = asyncio.Event()
        self.delete_event = asyncio.Event()

    async def connect_called_with_search(self):
        return await self.search_event.wait()

    async def connect_called_with_add(self):
        return await self.add_event.wait()

    async def connect_called_with_delete(self):
        return await self.delete_event.wait()

    @property
    def base_dn(self):
        return BASE_DN

    @asynccontextmanager
    async def connect(self, *args, **kwargs):
        self.connect_called = True

        async def _search(*a, **kw):
            self.search_event.set()
            return self.return_value

        async def _add(*a, **kw):
            self.add_event.set()
            return self.return_value

        async def _modify(*a, **kw):
            return self.return_value

        async def _delete(*a, **kw):
            self.delete_event.set()
            return self.return_value

        self.conn.search = mock.MagicMock(side_effect=_search)
        self.conn.add = mock.MagicMock(side_effect=_add)
        self.conn.modify = mock.MagicMock(side_effect=_modify)
        self.conn.delete = mock.MagicMock(side_effect=_delete)

        yield self.conn


cl = mock.MagicMock()
cl.base_dn = BASE_DN


@pytest.mark.parametrize(
    "input_obj, expected_result",
    [
        (User(cl, "test_user"), f"uid=test_user,ou=Hackers,{BASE_DN}"),
        (
            LDAPEntry(f"uid=test_user,ou=Hackers,{BASE_DN}"),
            f"uid=test_user,ou=Hackers,{BASE_DN}",
        ),
        (f"uid=test_user,ou=Hackers,{BASE_DN}", f"uid=test_user,ou=Hackers,{BASE_DN}"),
    ],
)
def test_get_dn(input_obj, expected_result):
    assert get_dn(input_obj) == expected_result


def test_get_dn_raises():
    with pytest.raises(ValueError) as e:
        _ = get_dn(object)

    assert "Unacceptable input:" in str(e.value)


@pytest.mark.asyncio
async def test_User_add():
    _cl = MockClient(return_value=None)
    u = User(_cl, "test_user")

    assert u.dn == f"uid=test_user,ou=Hackers,{BASE_DN}"

    _ = await u.save()

    assert _cl.connect_called
    assert await _cl.connect_called_with_add()


@pytest.mark.asyncio
async def test_User_modify():
    """
    This test does not use the MockClient check facilities because
    of implementation details of the Entry class.
    """
    _cl = MockClient(
        return_value=[
            LDAPEntry(f"uid=test_user,ou=Hackers,{BASE_DN}"),
        ]
    )
    u = User(_cl, "test_user")

    # This is the asyncio equivalent of a semaphore
    modified = asyncio.Event()

    async def _mock_modify():
        modified.set()

    u._entry = mock.MagicMock()
    u._entry.modify = mock.MagicMock(side_effect=_mock_modify)

    u["cn"] = "random_cn"
    _ = await u.modify()

    assert _cl.connect_called
    assert await _cl.connect_called_with_search()
    # The `wait()` call here is needed to wait for `_mock_modify`
    # to end its async execution
    assert await modified.wait()


@pytest.mark.asyncio
async def test_User_delete():
    _cl = MockClient(return_value=None)
    u = User(_cl, "test_user")

    _ = await u.delete()

    assert _cl.connect_called
    assert await _cl.connect_called_with_delete()