"""Tests for MCP auth: bearer-token validation that reuses api_keys."""
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from fabledassistant.mcp.auth import resolve_bearer_to_user_id


@pytest.mark.asyncio
async def test_resolve_bearer_missing_header_returns_none():
    assert await resolve_bearer_to_user_id(None) is None


@pytest.mark.asyncio
async def test_resolve_bearer_malformed_header_returns_none():
    assert await resolve_bearer_to_user_id("Token abc") is None
    assert await resolve_bearer_to_user_id("Bearer") is None
    assert await resolve_bearer_to_user_id("Bearer ") is None
    assert await resolve_bearer_to_user_id("") is None


@pytest.mark.asyncio
async def test_resolve_bearer_unknown_token_returns_none():
    with patch(
        "fabledassistant.mcp.auth.lookup_key",
        AsyncMock(return_value=None),
    ):
        assert await resolve_bearer_to_user_id("Bearer fmcp_doesnotexist") is None


@pytest.mark.asyncio
async def test_resolve_bearer_valid_token_returns_user_id():
    fake_key = MagicMock()
    fake_key.user_id = 42
    with patch(
        "fabledassistant.mcp.auth.lookup_key",
        AsyncMock(return_value=fake_key),
    ):
        uid = await resolve_bearer_to_user_id("Bearer fmcp_validkey")
    assert uid == 42


@pytest.mark.asyncio
async def test_resolve_bearer_calls_lookup_with_stripped_token():
    """The Bearer prefix and any trailing whitespace must be stripped before lookup."""
    fake_key = MagicMock()
    fake_key.user_id = 1
    mock_lookup = AsyncMock(return_value=fake_key)
    with patch("fabledassistant.mcp.auth.lookup_key", mock_lookup):
        await resolve_bearer_to_user_id("Bearer fmcp_abc123  ")
    mock_lookup.assert_awaited_once_with("fmcp_abc123")