"""Unit tests for new SpoolmanClient inventory methods.

Covers: get_spool, get_all_spools, delete_spool, set_spool_archived,
update_spool_full, find_or_create_vendor, find_or_create_filament.
"""

from unittest.mock import AsyncMock, MagicMock, patch

import httpx
import pytest

from backend.app.services.spoolman import SpoolmanClient, SpoolmanUnavailableError


@pytest.fixture
def client():
    return SpoolmanClient("http://localhost:7912")


def _make_response(json_data, status_code=200):
    """Build a mock httpx response."""
    resp = MagicMock()
    resp.status_code = status_code
    resp.json.return_value = json_data
    resp.raise_for_status = MagicMock()
    return resp


SAMPLE_SPOOL = {
    "id": 42,
    "remaining_weight": 750.0,
    "used_weight": 250.0,
    "archived": False,
    "filament": {"id": 7, "name": "PLA Basic", "material": "PLA"},
}

SAMPLE_FILAMENT = {
    "id": 7,
    "name": "PLA Basic",
    "material": "PLA",
    "color_hex": "FF0000",
    "weight": 1000.0,
    "vendor": {"id": 3, "name": "Bambu Lab"},
}

SAMPLE_VENDOR = {"id": 3, "name": "Bambu Lab"}


# ---------------------------------------------------------------------------
# get_spool
# ---------------------------------------------------------------------------


class TestGetSpool:
    @pytest.mark.asyncio
    async def test_returns_spool_dict_on_success(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(SAMPLE_SPOOL))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            result = await client.get_spool(42)
        assert result == SAMPLE_SPOOL
        mock_http.request.assert_called_once_with("GET", "http://localhost:7912/api/v1/spool/42", json=None)

    @pytest.mark.asyncio
    async def test_raises_unavailable_on_http_error(self, client):
        from backend.app.services.spoolman import SpoolmanUnavailableError

        mock_http = AsyncMock()
        mock_http.request = AsyncMock(side_effect=Exception("not found"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.get_spool(99)

    @pytest.mark.asyncio
    async def test_raises_not_found_on_404_response(self, client):
        """get_spool raises SpoolmanNotFoundError when Spoolman returns HTTP 404 (PT-I3)."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(None, status_code=404))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanNotFoundError),
        ):
            await client.get_spool(99)

    @pytest.mark.asyncio
    async def test_raises_client_error_on_4xx_response(self, client):
        """get_spool raises SpoolmanClientError (not SpoolmanUnavailableError) on non-404 4xx (H2)."""
        from backend.app.services.spoolman import SpoolmanClientError

        mock_request = MagicMock()
        mock_request.url = "http://localhost:7912/api/v1/spool/42"
        mock_resp_obj = MagicMock()
        mock_resp_obj.status_code = 422

        mock_http = AsyncMock()
        resp = _make_response(None, status_code=422)
        resp.raise_for_status = MagicMock(
            side_effect=httpx.HTTPStatusError("Unprocessable", request=mock_request, response=mock_resp_obj)
        )
        mock_http.request = AsyncMock(return_value=resp)
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanClientError) as exc_info,
        ):
            await client.get_spool(42)
        assert exc_info.value.status_code == 422


# ---------------------------------------------------------------------------
# get_all_spools
# ---------------------------------------------------------------------------


class TestGetAllSpools:
    @pytest.mark.asyncio
    async def test_returns_list_without_archived_by_default(self, client):
        mock_http = AsyncMock()
        mock_http.get = AsyncMock(return_value=_make_response([SAMPLE_SPOOL]))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            result = await client.get_all_spools()
        assert result == [SAMPLE_SPOOL]
        mock_http.get.assert_called_once_with("http://localhost:7912/api/v1/spool", params=None)

    @pytest.mark.asyncio
    async def test_passes_allow_archived_param(self, client):
        mock_http = AsyncMock()
        mock_http.get = AsyncMock(return_value=_make_response([SAMPLE_SPOOL]))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            await client.get_all_spools(allow_archived=True)
        mock_http.get.assert_called_once_with("http://localhost:7912/api/v1/spool", params={"allow_archived": "true"})

    @pytest.mark.asyncio
    async def test_raises_unavailable_on_error(self, client):
        mock_http = AsyncMock()
        mock_http.get = AsyncMock(side_effect=Exception("connection error"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.get_all_spools()


# ---------------------------------------------------------------------------
# delete_spool
# ---------------------------------------------------------------------------


class TestDeleteSpool:
    @pytest.mark.asyncio
    async def test_returns_none_on_success(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(None))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            result = await client.delete_spool(42)
        assert result is None
        mock_http.request.assert_called_once_with("DELETE", "http://localhost:7912/api/v1/spool/42", json=None)

    @pytest.mark.asyncio
    async def test_raises_unavailable_on_error(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(side_effect=Exception("server error"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.delete_spool(42)


# ---------------------------------------------------------------------------
# set_spool_archived
# ---------------------------------------------------------------------------


class TestSetSpoolArchived:
    @pytest.mark.asyncio
    async def test_archives_spool(self, client):
        archived_spool = {**SAMPLE_SPOOL, "archived": True}
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(archived_spool))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            result = await client.set_spool_archived(42, archived=True)
        assert result == archived_spool
        mock_http.request.assert_called_once_with(
            "PATCH",
            "http://localhost:7912/api/v1/spool/42",
            json={"archived": True},
        )

    @pytest.mark.asyncio
    async def test_restores_spool(self, client):
        restored_spool = {**SAMPLE_SPOOL, "archived": False}
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(restored_spool))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            result = await client.set_spool_archived(42, archived=False)
        assert result == restored_spool
        mock_http.request.assert_called_once_with(
            "PATCH",
            "http://localhost:7912/api/v1/spool/42",
            json={"archived": False},
        )

    @pytest.mark.asyncio
    async def test_raises_unavailable_on_error(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(side_effect=Exception("timeout"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.set_spool_archived(42, archived=True)


# ---------------------------------------------------------------------------
# update_spool_full
# ---------------------------------------------------------------------------


class TestUpdateSpoolFull:
    @pytest.mark.asyncio
    async def test_sends_only_provided_fields(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(SAMPLE_SPOOL))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            await client.update_spool_full(42, remaining_weight=600.0, comment="note")
        call_json = mock_http.request.call_args.kwargs["json"]
        assert call_json == {"remaining_weight": 600.0, "comment": "note"}

    @pytest.mark.asyncio
    async def test_clear_location_sets_none(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(SAMPLE_SPOOL))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            await client.update_spool_full(42, clear_location=True)
        call_json = mock_http.request.call_args.kwargs["json"]
        assert call_json == {"location": None}

    @pytest.mark.asyncio
    async def test_location_set_when_not_clearing(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(SAMPLE_SPOOL))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            await client.update_spool_full(42, location="Shelf A")
        call_json = mock_http.request.call_args.kwargs["json"]
        assert call_json == {"location": "Shelf A"}

    @pytest.mark.asyncio
    async def test_empty_comment_sent_as_none(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(return_value=_make_response(SAMPLE_SPOOL))
        with patch.object(client, "_get_client", AsyncMock(return_value=mock_http)):
            await client.update_spool_full(42, comment="")
        call_json = mock_http.request.call_args.kwargs["json"]
        assert call_json == {"comment": None}

    @pytest.mark.asyncio
    async def test_raises_unavailable_on_error(self, client):
        mock_http = AsyncMock()
        mock_http.request = AsyncMock(side_effect=Exception("network"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.update_spool_full(42, remaining_weight=500.0)


# ---------------------------------------------------------------------------
# find_or_create_vendor
# ---------------------------------------------------------------------------


class TestFindOrCreateVendor:
    @pytest.mark.asyncio
    async def test_returns_existing_vendor_id(self, client):
        with patch.object(client, "get_vendors", AsyncMock(return_value=[SAMPLE_VENDOR])):
            result = await client.find_or_create_vendor("Bambu Lab")
        assert result == 3

    @pytest.mark.asyncio
    async def test_case_insensitive_match(self, client):
        with patch.object(client, "get_vendors", AsyncMock(return_value=[SAMPLE_VENDOR])):
            result = await client.find_or_create_vendor("bambu lab")
        assert result == 3

    @pytest.mark.asyncio
    async def test_creates_vendor_when_not_found(self, client):
        new_vendor = {"id": 10, "name": "New Brand"}
        with (
            patch.object(client, "get_vendors", AsyncMock(return_value=[])),
            patch.object(client, "create_vendor", AsyncMock(return_value=new_vendor)) as mock_create,
        ):
            result = await client.find_or_create_vendor("New Brand")
        assert result == 10
        mock_create.assert_called_once_with("New Brand")

    @pytest.mark.asyncio
    async def test_raises_when_create_fails(self, client):
        with (
            patch.object(client, "get_vendors", AsyncMock(return_value=[])),
            patch.object(client, "create_vendor", AsyncMock(side_effect=SpoolmanUnavailableError("unreachable"))),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.find_or_create_vendor("Ghost Brand")


# ---------------------------------------------------------------------------
# find_or_create_filament
# ---------------------------------------------------------------------------


class TestFindOrCreateFilament:
    @pytest.mark.asyncio
    async def test_returns_existing_filament_id(self, client):
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=3)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[SAMPLE_FILAMENT])),
        ):
            result = await client.find_or_create_filament("PLA", "Basic", "Bambu Lab", "FF0000", 1000)
        assert result == 7

    @pytest.mark.asyncio
    async def test_patches_color_name_on_existing_filament_when_changed(self, client):
        """#1319: color_name is not part of the match key, so when a caller
        updates a spool with a new color_name and the material/name/color/vendor
        still match an existing filament, the existing filament's color_name
        must be patched — otherwise the user's edit is silently dropped."""
        existing = {**SAMPLE_FILAMENT, "color_name": None}
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=3)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[existing])),
            patch.object(client, "patch_filament", AsyncMock(return_value={"id": 7})) as mock_patch,
        ):
            result = await client.find_or_create_filament(
                "PLA", "Basic", "Bambu Lab", "FF0000", 1000, color_name="Sunny Yellow"
            )
        assert result == 7
        mock_patch.assert_called_once_with(7, {"color_name": "Sunny Yellow"})

    @pytest.mark.asyncio
    async def test_does_not_patch_when_color_name_unchanged(self, client):
        existing = {**SAMPLE_FILAMENT, "color_name": "Sunny Yellow"}
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=3)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[existing])),
            patch.object(client, "patch_filament", AsyncMock()) as mock_patch,
        ):
            result = await client.find_or_create_filament(
                "PLA", "Basic", "Bambu Lab", "FF0000", 1000, color_name="Sunny Yellow"
            )
        assert result == 7
        mock_patch.assert_not_called()

    @pytest.mark.asyncio
    async def test_does_not_patch_when_color_name_empty(self, client):
        """An empty/None color_name should not clobber an existing value."""
        existing = {**SAMPLE_FILAMENT, "color_name": "Sunny Yellow"}
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=3)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[existing])),
            patch.object(client, "patch_filament", AsyncMock()) as mock_patch,
        ):
            result = await client.find_or_create_filament("PLA", "Basic", "Bambu Lab", "FF0000", 1000, color_name=None)
        assert result == 7
        mock_patch.assert_not_called()

    @pytest.mark.asyncio
    async def test_clears_color_name_when_empty_string_passed(self, client):
        """#1319 follow-up: empty string means "explicit clear" — the route
        layer translates a wire-level null into "" so the user can blank the
        field on a previously-set spool."""
        existing = {**SAMPLE_FILAMENT, "color_name": "Sunny Yellow"}
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=3)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[existing])),
            patch.object(client, "patch_filament", AsyncMock(return_value={"id": 7})) as mock_patch,
        ):
            result = await client.find_or_create_filament("PLA", "Basic", "Bambu Lab", "FF0000", 1000, color_name="")
        assert result == 7
        mock_patch.assert_called_once_with(7, {"color_name": None})

    @pytest.mark.asyncio
    async def test_patch_failure_does_not_block_match(self, client):
        """A patch_filament failure must not prevent returning the matched id —
        save should still link the spool to the correct filament."""
        existing = {**SAMPLE_FILAMENT, "color_name": None}
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=3)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[existing])),
            patch.object(client, "patch_filament", AsyncMock(side_effect=SpoolmanUnavailableError("boom"))),
        ):
            result = await client.find_or_create_filament(
                "PLA", "Basic", "Bambu Lab", "FF0000", 1000, color_name="Sunny Yellow"
            )
        assert result == 7

    @pytest.mark.asyncio
    async def test_creates_filament_when_no_match(self, client):
        new_filament = {"id": 99, "name": "PETG Pro"}
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=3)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[])),
            patch.object(client, "create_filament", AsyncMock(return_value=new_filament)) as mock_create,
        ):
            result = await client.find_or_create_filament("PETG", "Pro", "Bambu Lab", "00FF00", 1000)
        assert result == 99
        mock_create.assert_called_once_with(
            name="PETG Pro",
            vendor_id=3,
            material="PETG",
            color_hex="00FF00",
            color_name=None,
            weight=1000.0,
        )

    @pytest.mark.asyncio
    async def test_no_brand_skips_vendor_lookup(self, client):
        filament_no_vendor = {
            **SAMPLE_FILAMENT,
            "vendor": None,
            "name": "PLA Basic",
            "color_hex": "FF0000",
        }
        with (
            patch.object(client, "get_filaments", AsyncMock(return_value=[filament_no_vendor])),
        ):
            result = await client.find_or_create_filament("PLA", "Basic", None, "FF0000", 1000)
        assert result == 7

    @pytest.mark.asyncio
    async def test_color_hex_normalised_to_uppercase(self, client):
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=None)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[])),
            patch.object(client, "create_filament", AsyncMock(return_value={"id": 5})) as mock_create,
        ):
            await client.find_or_create_filament("ABS", "", None, "ff0000", 750)
        mock_create.assert_called_once_with(
            name="ABS",
            vendor_id=None,
            material="ABS",
            color_hex="FF0000",
            color_name=None,
            weight=750.0,
        )

    @pytest.mark.asyncio
    async def test_raises_when_create_fails(self, client):
        with (
            patch.object(client, "find_or_create_vendor", AsyncMock(return_value=1)),
            patch.object(client, "get_filaments", AsyncMock(return_value=[])),
            patch.object(client, "create_filament", AsyncMock(side_effect=SpoolmanUnavailableError("unreachable"))),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.find_or_create_filament("TPU", "Flex", "Generic", "000000", 500)


# ---------------------------------------------------------------------------
# get_filaments / get_vendors / get_external_filaments error propagation (H11)
# ---------------------------------------------------------------------------


class TestGetFilamentsRaisesOnError:
    @pytest.mark.asyncio
    async def test_raises_unavailable_on_error(self, client):
        mock_http = AsyncMock()
        mock_http.get = AsyncMock(side_effect=Exception("timeout"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.get_filaments()


class TestGetVendorsRaisesOnError:
    @pytest.mark.asyncio
    async def test_raises_unavailable_on_error(self, client):
        mock_http = AsyncMock()
        mock_http.get = AsyncMock(side_effect=Exception("timeout"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.get_vendors()


class TestGetExternalFilamentsRaisesOnError:
    @pytest.mark.asyncio
    async def test_raises_unavailable_on_error(self, client):
        mock_http = AsyncMock()
        mock_http.get = AsyncMock(side_effect=Exception("timeout"))
        with (
            patch.object(client, "_get_client", AsyncMock(return_value=mock_http)),
            pytest.raises(SpoolmanUnavailableError),
        ):
            await client.get_external_filaments()