from datetime import datetime as dt
from datetime import timezone

import pytest
from conftest import DB, Response
from hircine.db.models import Circle


@pytest.fixture
def query_circle(execute_id):
    query = """
    query circle($id: Int!) {
        circle(id: $id) {
            __typename
            ... on Circle {
                id
                name
            }
            ... on Error {
                message
            }
            ... on IDNotFoundError {
                id
            }
        }
    }
    """

    return execute_id(query)


@pytest.fixture
def query_circles(execute):
    query = """
    query circles {
        circles {
            __typename
            count
            edges {
                id
                name
            }
        }
    }
    """

    return execute(query)


@pytest.fixture
def add_circle(execute_add):
    mutation = """
    mutation addCircle($input: AddCircleInput!) {
        addCircle(input: $input) {
            __typename
            ... on AddSuccess {
                id
            }
            ... on Error {
                message
            }
            ... on InvalidParameterError {
                parameter
            }
        }
    }
    """

    return execute_add(mutation)


@pytest.fixture
def update_circles(execute_update):
    mutation = """
    mutation updateCircles($ids: [Int!]!, $input: UpdateCircleInput!) {
        updateCircles(ids: $ids, input: $input) {
            __typename
            ... on Success {
                message
            }
            ... on IDNotFoundError {
                id
            }
            ... on Error {
                message
            }
            ... on InvalidParameterError {
                parameter
            }
        }
    }
    """  # noqa: E501

    return execute_update(mutation)


@pytest.fixture
def delete_circles(execute_delete):
    mutation = """
    mutation deleteCircles($ids: [Int!]!) {
        deleteCircles(ids: $ids) {
            __typename
            ... on Success {
                message
            }
            ... on Error {
                message
            }
            ... on IDNotFoundError {
                id
            }
        }
    }
    """

    return execute_delete(mutation)


@pytest.mark.anyio
async def test_query_circle(query_circle, gen_circle):
    circle = await DB.add(next(gen_circle))

    response = Response(await query_circle(circle.id))
    response.assert_is("Circle")

    assert response.id == circle.id
    assert response.name == circle.name


@pytest.mark.anyio
async def test_query_circle_fails_not_found(query_circle):
    response = Response(await query_circle(1))
    response.assert_is("IDNotFoundError")
    assert response.id == 1
    assert response.message == "Circle ID not found: '1'"


@pytest.mark.anyio
async def test_query_circles(query_circles, gen_circle):
    circles = await DB.add_all(*gen_circle)

    response = Response(await query_circles())
    response.assert_is("CircleFilterResult")

    assert response.count == len(circles)
    assert isinstance((response.edges), list)
    assert len(response.edges) == len(circles)

    edges = iter(response.edges)
    for circle in sorted(circles, key=lambda a: a.name):
        edge = next(edges)
        assert edge["id"] == circle.id
        assert edge["name"] == circle.name


@pytest.mark.anyio
async def test_add_circle(add_circle):
    response = Response(await add_circle({"name": "added circle"}))
    response.assert_is("AddSuccess")

    circle = await DB.get(Circle, response.id)
    assert circle is not None
    assert circle.name == "added circle"


@pytest.mark.anyio
async def test_add_circle_fails_empty_parameter(add_circle):
    response = Response(await add_circle({"name": ""}))

    response.assert_is("InvalidParameterError")
    assert response.parameter == "name"
    assert response.message == "Invalid parameter 'name': cannot be empty"


@pytest.mark.anyio
async def test_add_circle_fails_exists(add_circle, gen_circle):
    circle = await DB.add(next(gen_circle))

    response = Response(await add_circle({"name": circle.name}))
    response.assert_is("NameExistsError")
    assert response.message == "Another Circle with this name exists"


@pytest.mark.anyio
async def test_delete_circle(delete_circles, gen_circle):
    circle = await DB.add(next(gen_circle))
    id = circle.id

    response = Response(await delete_circles(id))
    response.assert_is("DeleteSuccess")

    circle = await DB.get(Circle, id)
    assert circle is None


@pytest.mark.anyio
async def test_delete_circle_not_found(delete_circles):
    response = Response(await delete_circles(1))

    response.assert_is("IDNotFoundError")
    assert response.id == 1
    assert response.message == "Circle ID not found: '1'"


@pytest.mark.anyio
async def test_update_circle(update_circles, gen_circle):
    circle = await DB.add(next(gen_circle))

    input = {"name": "updated circle"}
    response = Response(await update_circles(circle.id, input))
    response.assert_is("UpdateSuccess")

    circle = await DB.get(Circle, circle.id)
    assert circle is not None
    assert circle.name == "updated circle"


@pytest.mark.anyio
async def test_update_circle_fails_exists(update_circles, gen_circle):
    first = await DB.add(next(gen_circle))
    second = await DB.add(next(gen_circle))

    response = Response(await update_circles(second.id, {"name": first.name}))
    response.assert_is("NameExistsError")
    assert response.message == "Another Circle with this name exists"


@pytest.mark.anyio
async def test_update_circle_fails_not_found(update_circles):
    response = Response(await update_circles(1, {"name": "updated circle"}))

    response.assert_is("IDNotFoundError")
    assert response.id == 1
    assert response.message == "Circle ID not found: '1'"


@pytest.mark.anyio
async def test_update_circles_cannot_bulk_edit_name(update_circles, gen_circle):
    first = await DB.add(next(gen_circle))
    second = await DB.add(next(gen_circle))

    response = Response(await update_circles([first.id, second.id], {"name": "unique"}))
    response.assert_is("InvalidParameterError")


@pytest.mark.parametrize(
    "empty",
    [
        None,
        "",
    ],
    ids=[
        "none",
        "empty string",
    ],
)
@pytest.mark.anyio
async def test_update_circle_fails_empty_parameter(update_circles, gen_circle, empty):
    circle = await DB.add(next(gen_circle))

    response = Response(await update_circles(circle.id, {"name": empty}))

    response.assert_is("InvalidParameterError")
    assert response.parameter == "name"
    assert response.message == "Invalid parameter 'name': cannot be empty"


@pytest.mark.anyio
async def test_update_circle_changes_updated_at(update_circles):
    original_circle = Circle(name="circle")
    original_circle.updated_at = dt(2023, 1, 1, tzinfo=timezone.utc)
    original_circle = await DB.add(original_circle)

    response = Response(await update_circles(original_circle.id, {"name": "updated"}))
    response.assert_is("UpdateSuccess")

    circle = await DB.get(Circle, original_circle.id)
    assert circle.updated_at > original_circle.updated_at