"""Tests for watcher event loop logic."""

from unittest.mock import AsyncMock, patch

import pytest

from watcher.event_loop import (
    extract_nc_file_path,
    is_audio_file,
    is_band_audio_path,
    normalize_nc_path,
    poll_once,
)


def test_is_audio_file_matches_extensions():
    extensions = [".wav", ".mp3", ".flac"]
    assert is_audio_file("/bands/foo/songs/bar/take1.wav", extensions)
    assert is_audio_file("/bands/foo/songs/bar/take1.MP3", extensions)
    assert not is_audio_file("/bands/foo/songs/bar/cover.jpg", extensions)
    assert not is_audio_file("/bands/foo/songs/bar/notes.txt", extensions)


def test_is_band_audio_path():
    assert is_band_audio_path("/bands/myband/songs/mysong/take.wav")
    assert is_band_audio_path("bands/slug/songs/")
    assert not is_band_audio_path("/nextcloud/files/random.wav")
    assert not is_band_audio_path("/")


def test_normalize_nc_path_strips_dav_prefix():
    assert normalize_nc_path("remote.php/dav/files/ncadmin/bands/myband/take.wav", "ncadmin") == "bands/myband/take.wav"


def test_normalize_nc_path_strips_user_files_prefix():
    assert normalize_nc_path("ncadmin/files/bands/myband/take.wav", "ncadmin") == "bands/myband/take.wav"


def test_normalize_nc_path_strips_files_prefix():
    assert normalize_nc_path("files/bands/myband/take.wav", "ncadmin") == "bands/myband/take.wav"


def test_normalize_nc_path_already_relative():
    assert normalize_nc_path("bands/myband/take.wav", "ncadmin") == "bands/myband/take.wav"


def test_extract_nc_file_path_from_objects():
    activity = {"objects": {"42": "/bands/foo/songs/bar/take.wav"}}
    path = extract_nc_file_path(activity)
    assert path == "/bands/foo/songs/bar/take.wav"


def test_extract_nc_file_path_from_object_name():
    activity = {"objects": {}, "object_name": "/bands/foo/songs/bar/take.wav"}
    path = extract_nc_file_path(activity)
    assert path == "/bands/foo/songs/bar/take.wav"


def test_extract_nc_file_path_returns_none_when_missing():
    activity = {"objects": {}}
    path = extract_nc_file_path(activity)
    assert path is None


def _make_nc_mock(username: str = "admin") -> AsyncMock:
    """Return a properly configured NextcloudWatcherClient mock."""
    from watcher.nc_client import NextcloudWatcherClient
    nc = AsyncMock(spec=NextcloudWatcherClient)
    nc.username = username
    return nc


# ── poll_once: NC 22+ style (type field) ──────────────────────────────────────

@pytest.mark.asyncio
async def test_poll_once_ignores_non_audio_files(settings):
    nc = _make_nc_mock()
    nc.get_activities.return_value = [
        {
            "activity_id": 1,
            "type": "file_created",
            "subject": "created_self",
            "objects": {"1": "bands/foo/songs/bar/image.jpg"},
        }
    ]

    with patch("watcher.event_loop.register_version_with_api") as mock_register:
        await poll_once(nc, settings)
        mock_register.assert_not_called()


@pytest.mark.asyncio
async def test_poll_once_registers_audio_upload_new_nc_style(settings):
    nc = _make_nc_mock()
    nc.get_activities.return_value = [
        {
            "activity_id": 5,
            "type": "file_created",
            "subject": "created_self",
            "objects": {"10": "bands/myband/songs/mysong/take1.wav"},
        }
    ]
    nc.get_file_etag.return_value = "abc123"

    with patch(
        "watcher.event_loop.register_version_with_api", new_callable=AsyncMock, return_value=True
    ) as mock_register:
        await poll_once(nc, settings)
        mock_register.assert_called_once_with(
            "bands/myband/songs/mysong/take1.wav",
            "abc123",
            settings.api_url,
        )


@pytest.mark.asyncio
async def test_poll_once_registers_audio_upload_old_nc_style(settings):
    """Old NC: type='files', subject='created_self' (machine key)."""
    nc = _make_nc_mock()
    nc.get_activities.return_value = [
        {
            "activity_id": 7,
            "type": "files",
            "subject": "created_self",
            "objects": {"11": "bands/myband/231015/take1.wav"},
        }
    ]
    nc.get_file_etag.return_value = "etag999"

    with patch(
        "watcher.event_loop.register_version_with_api", new_callable=AsyncMock, return_value=True
    ) as mock_register:
        await poll_once(nc, settings)
        mock_register.assert_called_once_with(
            "bands/myband/231015/take1.wav",
            "etag999",
            settings.api_url,
        )


@pytest.mark.asyncio
async def test_poll_once_ignores_non_file_events(settings):
    nc = _make_nc_mock()
    nc.get_activities.return_value = [
        {
            "activity_id": 2,
            "type": "shared_with_user",
            "subject": "shared_with_you",
            "objects": {"5": "bands/foo/songs/bar/take.wav"},
        }
    ]

    with patch("watcher.event_loop.register_version_with_api") as mock_register:
        await poll_once(nc, settings)
        mock_register.assert_not_called()


@pytest.mark.asyncio
async def test_poll_once_ignores_non_band_audio_files(settings):
    nc = _make_nc_mock()
    nc.get_activities.return_value = [
        {
            "activity_id": 3,
            "type": "file_created",
            "subject": "created_self",
            "objects": {"6": "Music/personal/track.mp3"},
        }
    ]

    with patch("watcher.event_loop.register_version_with_api") as mock_register:
        await poll_once(nc, settings)
        mock_register.assert_not_called()


@pytest.mark.asyncio
async def test_poll_once_empty_activities_does_nothing(settings):
    nc = _make_nc_mock()
    nc.get_activities.return_value = []

    with patch("watcher.event_loop.register_version_with_api") as mock_register:
        await poll_once(nc, settings)
        mock_register.assert_not_called()


@pytest.mark.asyncio
async def test_poll_once_advances_cursor(settings):
    nc = _make_nc_mock()
    nc.get_activities.return_value = [
        {
            "activity_id": 10,
            "type": "file_created",
            "subject": "created_self",
            "objects": {"1": "bands/band/cover.jpg"},  # non-audio → skipped
        },
        {
            "activity_id": 20,
            "type": "file_created",
            "subject": "created_self",
            "objects": {"2": "bands/band/doc.pdf"},  # non-audio → skipped
        },
    ]

    import watcher.event_loop as el
    el._last_activity_id = 0
    with patch("watcher.event_loop.register_version_with_api"):
        await poll_once(nc, settings)

    # Cursor should advance to the highest seen activity_id
    assert el._last_activity_id == 20