import io
import pytest
from unittest.mock import MagicMock, patch, ANY
from src.core.file_parser import TcxParser, WorkoutData, WorkoutMetadata
from datetime import datetime, timedelta


@pytest.fixture
def mock_tcx_parser():
    # Patch the TCXParser class where it's imported in src.core.file_parser
    with patch("src.core.file_parser.TCXParser") as mock_tcx_parser_class:
        mock_tcx_instance = MagicMock()
        mock_tcx_parser_class.return_value = mock_tcx_instance

        mock_tcx_instance.started_at = datetime(2023, 1, 1, 10, 0, 0)
        mock_tcx_instance.duration = 3600  # 1 hour
        # Mock other attributes as needed for future tests

        yield mock_tcx_parser_class


def test_tcx_parser_parse_method_returns_workout_data(mock_tcx_parser):
    parser = TcxParser()
    workout_data = parser.parse(io.BytesIO(b"<tcx></tcx>"))

    mock_tcx_parser.assert_called_once_with(ANY)

    assert isinstance(workout_data, WorkoutData)
    assert isinstance(workout_data.metadata, WorkoutMetadata)
    assert workout_data.metadata.file_type == "TCX"
    assert workout_data.metadata.start_time == datetime(2023, 1, 1, 10, 0, 0)
    assert workout_data.metadata.duration == timedelta(seconds=3600)
    assert (
        workout_data.time_series_data.empty
    )  # Currently, no time series data is mocked