import pytest
from unittest.mock import AsyncMock, MagicMock, patch
from datetime import date

from room_cal.mcp import mcp, convert_price, run_action


def test_mcp_is_fastmcp():
  from fastmcp import FastMCP
  assert isinstance(mcp, FastMCP)


@pytest.mark.asyncio
async def test_convert_price_from_net():
  result = await convert_price('net_to_list', 'airbnb', 100)
  assert set(result.keys()) == {'net', 'list', 'retail'}
  assert result['net'] == 100
  assert result['list'] > result['net']


@pytest.mark.asyncio
async def test_convert_price_from_list():
  result = await convert_price('list_to_net', 'airbnb', 150)
  assert set(result.keys()) == {'net', 'list', 'retail'}
  assert result['list'] == 150
  assert result['net'] < result['list']


@pytest.mark.asyncio
async def test_convert_price_from_retail():
  result = await convert_price('retail_to_list', 'airbnb', 200)
  assert set(result.keys()) == {'net', 'list', 'retail'}
  assert result['retail'] == 200


@pytest.mark.asyncio
async def test_convert_price_unknown_transformation():
  with pytest.raises(ValueError, match='Unknown transformation'):
    await convert_price('bad_transform', 'airbnb', 100)


@pytest.mark.asyncio
async def test_run_action_unknown_raises():
  with pytest.raises(ValueError, match='Unknown action'):
    await run_action('bad-action', '2026-01-01')


@pytest.mark.asyncio
async def test_run_action_end_date_defaults_to_start():
  mock_fn = AsyncMock(return_value=[])
  mock_mod = MagicMock()
  mock_mod.fetch_prices = mock_fn
  with patch('importlib.import_module', return_value=mock_mod):
    await run_action('fetch-prices', '2026-01-15')
  mock_fn.assert_called_once_with(date(2026, 1, 15), date(2026, 1, 15))


@pytest.mark.asyncio
async def test_run_action_kwargs_filtering_allows_allowed_keys():
  mock_fn = AsyncMock(return_value=[])
  mock_mod = MagicMock()
  mock_mod.fetch_feed = mock_fn
  with patch('importlib.import_module', return_value=mock_mod):
    # fetch-feed allows feed_name and title, but not service
    await run_action('fetch-feed', '2026-01-15', end_date='2026-01-20', feed_name='Fire', title='T', service='airbnb')
  mock_fn.assert_called_once_with(date(2026, 1, 15), date(2026, 1, 20), feed_name='Fire', title='T')


@pytest.mark.asyncio
async def test_run_action_kwargs_filtering_excludes_none():
  mock_fn = AsyncMock(return_value=[])
  mock_mod = MagicMock()
  mock_mod.fetch_feed = mock_fn
  with patch('importlib.import_module', return_value=mock_mod):
    # feed_name=None should be excluded even though it's in allowed_keys
    await run_action('fetch-feed', '2026-01-15', feed_name=None)
  mock_fn.assert_called_once_with(date(2026, 1, 15), date(2026, 1, 15))