import json
from unittest.mock import patch

import pytest

from cloud import CreateVPCRequest, VPCAPIError, VPCNetworkManager


class Response:
    def __init__(self, payload: dict) -> None:
        self.payload = payload

    def read(self) -> bytes:
        return json.dumps(self.payload).encode()

    def __enter__(self) -> "Response":
        return self

    def __exit__(self, *args: object) -> None:
        return None


@patch("cloud.vpc_network_manager.urlopen")
def test_create_vpc_sends_bearer_request(urlopen) -> None:
    urlopen.return_value = Response({"id": "operation-id"})
    manager = VPCNetworkManager("token", base_url="https://api.example")

    operation = manager.create_vpc(
        CreateVPCRequest(projectId="project-id", name="game-vpc")
    )
    assert operation.id == "operation-id"

    request = urlopen.call_args.args[0]
    assert request.full_url == "https://api.example/v1/vpcs"
    assert request.method == "POST"
    assert request.get_header("Authorization") == "Bearer token"
    assert json.loads(request.data) == {"projectId": "project-id", "name": "game-vpc"}


def test_manager_rejects_empty_token() -> None:
    with pytest.raises(ValueError, match="token must not be empty"):
        VPCNetworkManager("")


def test_api_error_keeps_status_and_details() -> None:
    error = VPCAPIError(403, "forbidden", [{"reason": "denied"}])

    assert error.status == 403
    assert error.details == [{"reason": "denied"}]