import json
import pytest
from unittest.mock import patch, MagicMock
from openvpncertupdate import create_note, CryptgeonError


def mock_response(body: bytes):
    resp = MagicMock()
    resp.read.return_value = body
    resp.__enter__ = lambda s: s
    resp.__exit__ = MagicMock(return_value=False)
    return resp


@patch("openvpncertupdate.urllib.request.urlopen")
def test_returns_url_with_id(mock_open):
    mock_open.return_value = mock_response(b'{"id":"abc-123"}')
    url = create_note("secret", "https://cg.example.com")
    assert "abc-123" in url
    assert url.startswith("https://cg.example.com/#/note/abc-123/")


@patch("openvpncertupdate.urllib.request.urlopen")
def test_posts_to_correct_endpoint(mock_open):
    mock_open.return_value = mock_response(b'{"id":"x"}')
    create_note("hello", "https://cg.example.com")
    req = mock_open.call_args[0][0]
    assert req.full_url == "https://cg.example.com/api/notes/"
    body = json.loads(req.data)
    assert isinstance(body["contents"], list)
    assert body["views"] == 1
    assert body["type"] == "text"


@patch("openvpncertupdate.urllib.request.urlopen")
def test_raises_on_http_error(mock_open):
    import urllib.error
    mock_open.side_effect = urllib.error.HTTPError("", 500, "Error", None, None)
    with pytest.raises(CryptgeonError, match="500"):
        create_note("secret", "https://cg.example.com")


@patch("openvpncertupdate.urllib.request.urlopen")
def test_different_passwords_give_different_urls(mock_open):
    mock_open.return_value = mock_response(b'{"id":"same"}')
    url1 = create_note("pass1", "https://cg.example.com")
    url2 = create_note("pass2", "https://cg.example.com")
    assert url1 != url2