import pytest

from aiogram.dispatcher.filters.state import (State, StatesGroup, any_state,
                                              default_state)


class MyGroup(StatesGroup):
    state = State()
    state_1 = State()
    state_2 = State()

    class MySubGroup(StatesGroup):
        sub_state = State()
        sub_state_1 = State()
        sub_state_2 = State()

        in_custom_group = State(group_name='custom_group')

        class NewGroup(StatesGroup):
            spam = State()
            renamed_state = State(state='spam_state')


alone_state = State('alone')
alone_in_group = State('alone', group_name='home')


def test_default_state():
    if default_state.state is not None:
        raise AssertionError


def test_any_state():
    if any_state.state != '*':
        raise AssertionError


def test_alone_state():
    if alone_state.state != '@:alone':
        raise AssertionError
    if alone_in_group.state != 'home:alone':
        raise AssertionError


def test_group_names():
    if MyGroup.__group_name__ != 'MyGroup':
        raise AssertionError
    if MyGroup.__full_group_name__ != 'MyGroup':
        raise AssertionError

    if MyGroup.MySubGroup.__group_name__ != 'MySubGroup':
        raise AssertionError
    if MyGroup.MySubGroup.__full_group_name__ != 'MyGroup.MySubGroup':
        raise AssertionError

    if MyGroup.MySubGroup.NewGroup.__group_name__ != 'NewGroup':
        raise AssertionError
    if MyGroup.MySubGroup.NewGroup.__full_group_name__ != 'MyGroup.MySubGroup.NewGroup':
        raise AssertionError


def test_custom_group_in_group():
    if MyGroup.MySubGroup.in_custom_group.state != 'custom_group:in_custom_group':
        raise AssertionError


def test_custom_state_name_in_group():
    if MyGroup.MySubGroup.NewGroup.renamed_state.state != 'MyGroup.MySubGroup.NewGroup:spam_state':
        raise AssertionError


def test_group_states_names():
    if len(MyGroup.states) != 3:
        raise AssertionError
    if len(MyGroup.all_states) != 9:
        raise AssertionError

    if MyGroup.states_names != ('MyGroup:state', 'MyGroup:state_1', 'MyGroup:state_2'):
        raise AssertionError
    if MyGroup.MySubGroup.states_names != (
        'MyGroup.MySubGroup:sub_state', 'MyGroup.MySubGroup:sub_state_1', 'MyGroup.MySubGroup:sub_state_2',
        'custom_group:in_custom_group'):
        raise AssertionError
    if MyGroup.MySubGroup.NewGroup.states_names != (
        'MyGroup.MySubGroup.NewGroup:spam', 'MyGroup.MySubGroup.NewGroup:spam_state'):
        raise AssertionError

    if MyGroup.all_states_names != (
        'MyGroup:state', 'MyGroup:state_1', 'MyGroup:state_2',
        'MyGroup.MySubGroup:sub_state',
        'MyGroup.MySubGroup:sub_state_1',
        'MyGroup.MySubGroup:sub_state_2',
        'custom_group:in_custom_group',
        'MyGroup.MySubGroup.NewGroup:spam',
        'MyGroup.MySubGroup.NewGroup:spam_state'):
        raise AssertionError

    if MyGroup.MySubGroup.all_states_names != (
        'MyGroup.MySubGroup:sub_state',
        'MyGroup.MySubGroup:sub_state_1',
        'MyGroup.MySubGroup:sub_state_2',
        'custom_group:in_custom_group',
        'MyGroup.MySubGroup.NewGroup:spam',
        'MyGroup.MySubGroup.NewGroup:spam_state'):
        raise AssertionError

    if MyGroup.MySubGroup.NewGroup.all_states_names != (
        'MyGroup.MySubGroup.NewGroup:spam',
        'MyGroup.MySubGroup.NewGroup:spam_state'):
        raise AssertionError


def test_root_element():
    root = MyGroup.MySubGroup.NewGroup.spam.get_root()

    if not issubclass(root, StatesGroup):
        raise AssertionError
    if root != MyGroup:
        raise AssertionError

    if root != MyGroup.state.get_root():
        raise AssertionError
    if root != MyGroup.MySubGroup.get_root():
        raise AssertionError

    with pytest.raises(RuntimeError):
        any_state.get_root()