# -*- coding: utf-8 -*-
from unittest import mock

from bthlabs_jsonrpc_core import exceptions, serializer
import pytest

from bthlabs_jsonrpc_aiohttp import executor


@pytest.fixture
def fake_can_call():
    result = mock.AsyncMock()
    result.return_value = True

    return result


def test_init(fake_request, fake_can_call):
    # When
    result = executor.AioHttpExecutor(fake_request, fake_can_call)

    # Then
    assert result.request == fake_request
    assert result.can_call == fake_can_call


async def test_list_methods(fake_request, fake_can_call):
    # Given
    the_executor = executor.AioHttpExecutor(fake_request, fake_can_call)

    # When
    result = await the_executor.list_methods()

    # Then
    assert result == ['system.list_methods']


async def test_deserialize_data(fake_request, fake_can_call):
    # Given
    fake_request.json.return_value = 'spam'

    the_executor = executor.AioHttpExecutor(fake_request, fake_can_call)

    # When
    result = await the_executor.deserialize_data(fake_request)

    # Then
    assert result == 'spam'


async def test_deserialize_data_error(fake_request, fake_can_call):
    # Given
    fake_request.json.side_effect = RuntimeError('I HAZ FAIL')

    the_executor = executor.AioHttpExecutor(fake_request, fake_can_call)

    # When
    try:
        _ = await the_executor.deserialize_data(fake_request)
    except Exception as exception:
        assert isinstance(exception, exceptions.JSONRPCParseError)
    else:
        assert False, 'No exception raised?'


def test_enrich_args(fake_request, fake_can_call):
    # Given
    the_executor = executor.AioHttpExecutor(fake_request, fake_can_call)

    # When
    result = the_executor.enrich_args(['spam'])

    # Then
    assert result == [fake_request, 'spam']


async def test_before_call(fake_request, fake_can_call):
    # Given
    the_executor = executor.AioHttpExecutor(fake_request, fake_can_call)

    # When
    await the_executor.before_call('test', ['spam'], {'spam': True})

    # Then
    fake_can_call.assert_called_with(
        fake_request, 'test', ['spam'], {'spam': True},
    )


async def test_before_call_access_denied(fake_request, fake_can_call):
    # Given
    fake_can_call.return_value = False

    the_executor = executor.AioHttpExecutor(fake_request, fake_can_call)

    # When
    try:
        await the_executor.before_call('test', ['spam'], {'spam': True})
    except Exception as exception:
        assert isinstance(exception, exceptions.JSONRPCAccessDeniedError)
    else:
        assert False, 'No exception raised?'


@mock.patch('bthlabs_jsonrpc_core.registry.MethodRegistry.shared_registry')
async def test_execute(mock_shared_registry, fake_request, fake_can_call):
    # Given
    fake_method_registry = mock.Mock()
    fake_method_registry.get_handler.return_value = None
    fake_method_registry.get_methods.return_value = []
    mock_shared_registry.return_value = fake_method_registry

    batch = [
        {
            'jsonrpc': '2.0',
            'id': 'call_1',
            'method': 'system.list_methods',
            'params': ['spam'],
        },
        {
            'jsonrpc': '2.0',
            'id': 'call_2',
            'method': 'idontexist',
        },
        {
            'jsonrpc': '2.0',
            'method': 'system.list_methods',
            'params': {'spam': True},
        },
    ]

    fake_request.json.return_value = batch

    the_executor = executor.AioHttpExecutor(fake_request, fake_can_call)

    with mock.patch.object(the_executor, 'before_call') as mock_before_call:
        # When
        result = await the_executor.execute()

        # Then
        assert isinstance(result, serializer.JSONRPCSerializer)

        expected_result_data = [
            {
                'jsonrpc': '2.0',
                'id': 'call_1',
                'result': ['system.list_methods'],
            },
            {
                'jsonrpc': '2.0',
                'id': 'call_2',
                'error': {
                    'code': exceptions.JSONRPCMethodNotFoundError.ERROR_CODE,
                    'message': exceptions.JSONRPCMethodNotFoundError.ERROR_MESSAGE,
                },
            },
        ]
        assert result.data == expected_result_data

        fake_method_registry.get_handler.assert_called_with(
            'jsonrpc', 'idontexist',
        )

        assert mock_before_call.call_count == 2
        mock_before_call.assert_any_call(
            'system.list_methods', [fake_request, 'spam'], {},
        )
        mock_before_call.assert_any_call(
            'system.list_methods', [fake_request], {'spam': True},
        )