"""Integration tests for the Spoolman inventory proxy endpoints.

These tests verify that /api/v1/spoolman/inventory/spools/* correctly
translates between Spoolman's data model and Bambuddy's InventorySpool format.
"""

import json
from unittest.mock import AsyncMock, MagicMock, patch

import pytest
from fastapi import HTTPException
from httpx import AsyncClient

# ---------------------------------------------------------------------------
# Shared fixtures
# ---------------------------------------------------------------------------

SAMPLE_SPOOLMAN_SPOOL = {
    "id": 42,
    "filament": {
        "id": 7,
        "name": "PLA Basic",
        "material": "PLA",
        "color_hex": "FF0000",
        "weight": 1000,
        "vendor": {"id": 3, "name": "Bambu Lab"},
    },
    "remaining_weight": 750.0,
    "used_weight": 250.0,
    "location": "Printer1 - AMS A1",
    "comment": "test note",
    "first_used": "2024-01-01T00:00:00+00:00",
    "last_used": "2024-02-01T00:00:00+00:00",
    "registered": "2024-01-01T00:00:00+00:00",
    "archived": False,
    "price": None,
    "extra": {"tag": '"AABBCCDDEEFF0011AABBCCDDEEFF0011"'},
}


@pytest.fixture
async def spoolman_settings(db_session):
    """Create Spoolman settings in the database (enabled with URL)."""
    from backend.app.models.settings import Settings

    enabled_setting = Settings(key="spoolman_enabled", value="true")
    url_setting = Settings(key="spoolman_url", value="http://localhost:7912")
    db_session.add(enabled_setting)
    db_session.add(url_setting)
    await db_session.commit()
    return {"enabled": enabled_setting, "url": url_setting}


@pytest.fixture
def mock_spoolman_client():
    """Mock the Spoolman client with a sample spool."""
    mock_client = MagicMock()
    mock_client.base_url = "http://localhost:7912"
    mock_client.health_check = AsyncMock(return_value=True)
    mock_client.get_all_spools = AsyncMock(return_value=[SAMPLE_SPOOLMAN_SPOOL])
    mock_client.get_spool = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
    mock_client.create_spool = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
    mock_client.delete_spool = AsyncMock(return_value=True)
    mock_client.set_spool_archived = AsyncMock(
        side_effect=lambda spool_id, archived: {**SAMPLE_SPOOLMAN_SPOOL, "archived": archived}
    )
    # The reset records a baseline in spool.extra and touches no native field,
    # so the spool comes back with remaining_weight and used_weight unchanged
    # (#2906). The previous fixture returned used_weight=0 alongside
    # remaining_weight=750.0, which real Spoolman cannot produce -- it
    # recomputes remaining from initial minus used, so that response would have
    # been 1000.0 and the "remaining unchanged" assertion below would have
    # failed. The one check that could have caught the bug was cancelled out by
    # the mock.
    #
    # The baseline is staged as the JSON string '"250.0"', not the JSON number
    # '250.0'. Spoolman registers an unseen extra key as field_type "text" and
    # then requires the value to decode to a str, so the number form is
    # rejected with "Value is not a string." -- staging it here would be the
    # same class of mistake as the used_weight=0 above: a value the real server
    # cannot hold.
    mock_client.reset_spool_consumed_counter = AsyncMock(
        return_value={
            **SAMPLE_SPOOLMAN_SPOOL,
            "extra": {**SAMPLE_SPOOLMAN_SPOOL["extra"], "bambu_weight_used_baseline": json.dumps("250.0")},
        }
    )
    mock_client.update_spool_full = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
    mock_client.merge_spool_extra = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
    mock_client.find_or_create_filament = AsyncMock(return_value=7)
    mock_client.find_or_create_vendor = AsyncMock(return_value=3)
    mock_client.patch_filament = AsyncMock(return_value={"id": 7})
    # Default to singleton (only this spool uses the filament) so edits
    # exercise the new in-place-PATCH path; tests that need the shared
    # branch override this on the fly.
    mock_client.is_filament_shared = AsyncMock(return_value=False)
    mock_client.ensure_extra_field = AsyncMock(return_value=True)
    # list_spools calls maybe_sync_spoolman_locations which invokes
    # get_distinct_locations on the route-resolved client. Empty list keeps the
    # mock honest without staging phantom catalog rows.
    mock_client.get_distinct_locations = AsyncMock(return_value=[])

    with (
        patch(
            "backend.app.api.routes.spoolman_inventory.get_spoolman_client",
            AsyncMock(return_value=mock_client),
        ),
        patch(
            "backend.app.api.routes.spoolman_inventory.init_spoolman_client",
            AsyncMock(return_value=mock_client),
        ),
    ):
        yield mock_client


class TestSpoolmanInventoryMapping:
    """Tests for the Spoolman → InventorySpool data mapping."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_spools_returns_inventory_format(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """GET /spoolman/inventory/spools returns spools in InventorySpool format."""
        response = await async_client.get("/api/v1/spoolman/inventory/spools")

        assert response.status_code == 200
        spools = response.json()
        assert isinstance(spools, list)
        assert len(spools) == 1

        spool = spools[0]
        assert spool["id"] == 42
        assert spool["material"] == "PLA"
        assert spool["subtype"] == "Basic"
        assert spool["brand"] == "Bambu Lab"
        assert spool["label_weight"] == 1000
        assert spool["weight_used"] == 250.0
        assert spool["note"] == "test note"
        assert spool["data_origin"] == "spoolman"
        assert spool["tag_type"] == "spoolman"
        # RRGGBB + FF alpha
        assert spool["rgba"] == "FF0000FF"
        # Spoolman location mapped to storage_location
        assert spool["storage_location"] == "Printer1 - AMS A1"
        # RFID tag: 32-char → tray_uuid
        assert spool["tray_uuid"] == "AABBCCDDEEFF0011AABBCCDDEEFF0011"
        assert spool["tag_uid"] is None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_get_single_spool(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """GET /spoolman/inventory/spools/{id} returns a single spool."""
        response = await async_client.get("/api/v1/spoolman/inventory/spools/42")

        assert response.status_code == 200
        spool = response.json()
        assert spool["id"] == 42
        assert spool["material"] == "PLA"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_includes_archived_when_requested(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """GET /spoolman/inventory/spools?include_archived=true calls Spoolman with allow_archived."""
        await async_client.get("/api/v1/spoolman/inventory/spools?include_archived=true")
        mock_spoolman_client.get_all_spools.assert_called_once_with(allow_archived=True)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_archived_spool_has_archived_at(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """An archived Spoolman spool maps to archived_at != None."""
        archived_spool = {
            **SAMPLE_SPOOLMAN_SPOOL,
            "archived": True,
        }
        mock_spoolman_client.get_all_spools.return_value = [archived_spool]

        response = await async_client.get("/api/v1/spoolman/inventory/spools?include_archived=true")
        spool = response.json()[0]
        assert spool["archived_at"] is not None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_malformed_spool_skipped_in_list(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """A spool with an invalid id (e.g. 0) is silently skipped; others still appear."""
        bad_spool = {**SAMPLE_SPOOLMAN_SPOOL, "id": 0}
        mock_spoolman_client.get_all_spools.return_value = [bad_spool, SAMPLE_SPOOLMAN_SPOOL]

        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert response.status_code == 200
        spools = response.json()
        # bad_spool is dropped; the valid one survives
        assert len(spools) == 1
        assert spools[0]["id"] == 42

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_spools_returns_503_when_spoolman_unavailable(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """GET /spoolman/inventory/spools returns 503 when Spoolman is unreachable (H10)."""
        from backend.app.services.spoolman import SpoolmanUnavailableError

        mock_spoolman_client.get_all_spools.side_effect = SpoolmanUnavailableError("down")

        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert response.status_code == 503

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_uid_16char_maps_correctly(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """A 16-char tag maps to tag_uid, not tray_uuid."""
        spool_with_short_tag = {
            **SAMPLE_SPOOLMAN_SPOOL,
            "extra": {"tag": '"AABBCCDDEEFF0011"'},
        }
        mock_spoolman_client.get_all_spools.return_value = [spool_with_short_tag]

        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        spool = response.json()[0]
        assert spool["tag_uid"] == "AABBCCDDEEFF0011"
        assert spool["tray_uuid"] is None


class TestSpoolmanInventoryCRUD:
    """Tests for create, update, delete, archive, restore operations."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_not_enabled_returns_400(self, async_client: AsyncClient):
        """All endpoints return 400 when Spoolman is not enabled."""
        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert response.status_code == 400
        assert "not enabled" in response.json()["detail"].lower()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """POST /spoolman/inventory/spools creates a spool via Spoolman."""
        payload = {
            "material": "PLA",
            "subtype": "Basic",
            "brand": "Bambu Lab",
            "rgba": "FF0000FF",
            "label_weight": 1000,
            "weight_used": 0,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)

        assert response.status_code == 200
        mock_spoolman_client.find_or_create_filament.assert_called_once()
        mock_spoolman_client.create_spool.assert_called_once()
        data = response.json()
        assert data["material"] == "PLA"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_create_spools(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """POST /spoolman/inventory/spools/bulk creates multiple spools."""
        payload = {
            "spool": {"material": "PETG", "label_weight": 1000, "weight_used": 0},
            "quantity": 3,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools/bulk", json=payload)

        assert response.status_code == 200
        assert mock_spoolman_client.create_spool.call_count == 3

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_create_quantity_out_of_range_returns_422(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Bulk create quantity outside 1-50 is rejected with 422 (not silently clamped)."""
        payload = {
            "spool": {"material": "ABS", "label_weight": 1000, "weight_used": 0},
            "quantity": 999,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools/bulk", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_create_quantity_zero_returns_422(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Bulk create quantity of 0 is rejected with 422."""
        payload = {
            "spool": {"material": "ABS", "label_weight": 1000, "weight_used": 0},
            "quantity": 0,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools/bulk", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_spool(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH /spoolman/inventory/spools/{id} updates a spool."""
        payload = {"note": "updated note", "weight_used": 100.0}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)

        assert response.status_code == 200
        mock_spoolman_client.update_spool_full.assert_called_once()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_noop_metadata_reuses_filament(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#1357 follow-up: an edit that doesn't touch any filament-shaping
        field (only weight_used / note / color_name) must NOT hit
        find_or_create_filament OR patch_filament — the link stays put and
        the filament catalogue is left alone."""
        payload = {"note": "just a note change", "weight_used": 50.0}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.find_or_create_filament.assert_not_called()
        mock_spoolman_client.patch_filament.assert_not_called()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_singleton_filament_patches_in_place(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#1357 follow-up: when the linked filament is only used by the
        spool being edited (singleton), changing the subtype must PATCH that
        filament in place — NOT create a new filament and orphan the old
        one. This is the exact failure the reporter showed: editing Subtype
        "Red" → "Basic" minted a new "PETG Basic" filament every time.
        """
        # Sample filament is "PLA Basic"; flip to "Matte" so the metadata
        # actually changes and the singleton path engages.
        payload = {"subtype": "Matte"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        # Singleton path: PATCH the existing filament, do NOT find_or_create.
        mock_spoolman_client.patch_filament.assert_called_once()
        mock_spoolman_client.find_or_create_filament.assert_not_called()
        # PATCH targets the spool's current filament (id=7) with the new name.
        call_args = mock_spoolman_client.patch_filament.call_args
        assert call_args.args[0] == 7
        assert call_args.args[1]["name"] == "PLA Matte"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool_keeps_a_clear_colour_translucent(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#2912: the create route truncated rgba to six characters, so entering
        "fully transparent" by hand landed on the same opaque black as the AMS
        case in the report."""
        payload = {
            "material": "PLA",
            "rgba": "00000000",
            "label_weight": 1000,
            "weight_used": 0,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)

        assert response.status_code == 200
        assert mock_spoolman_client.find_or_create_filament.call_args.kwargs["color_hex"] == "00000000"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool_keeps_an_opaque_colour_at_six(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """The opaque case has to stay six characters or every create starts
        writing a shape the rest of the instance does not hold."""
        payload = {
            "material": "PLA",
            "rgba": "FF0000FF",
            "label_weight": 1000,
            "weight_used": 0,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)

        assert response.status_code == 200
        assert mock_spoolman_client.find_or_create_filament.call_args.kwargs["color_hex"] == "FF0000"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_alpha_only_edit_reaches_the_filament(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#2912: making a spool translucent is a real change to the filament's
        colour. Comparing bare RGB prefixes would call it a no-op and the edit
        would never land."""
        # Sample filament is FF0000; make it half-transparent.
        payload = {"rgba": "FF000080"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)

        assert response.status_code == 200
        mock_spoolman_client.patch_filament.assert_called_once()
        assert mock_spoolman_client.patch_filament.call_args.args[1]["color_hex"] == "FF000080"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_with_the_round_tripped_opaque_rgba_is_a_no_op(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#2912: the read side hands the frontend FF0000FF for a filament stored
        as FF0000, and the edit form sends it straight back. Comparing raw strings
        would make metadata_unchanged permanently False and PATCH the filament on
        every no-op edit.
        """
        payload = {"rgba": "FF0000FF", "note": "unrelated change"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)

        assert response.status_code == 200
        mock_spoolman_client.patch_filament.assert_not_called()
        mock_spoolman_client.find_or_create_filament.assert_not_called()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_shared_filament_falls_back_to_find_or_create(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#1357 follow-up: when the linked filament is shared with another
        spool, PATCHing in place would silently rewrite the sibling's
        metadata too. Fall back to find_or_create — only this spool's
        filament_id moves."""
        mock_spoolman_client.is_filament_shared.return_value = True
        payload = {"subtype": "Matte"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.find_or_create_filament.assert_called_once()
        mock_spoolman_client.patch_filament.assert_not_called()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_with_explicit_null_color_name_clears_extra(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#1357: explicit color_name=null means "clear". The route writes a
        JSON-encoded empty string to spool.extra.bambu_color_name so the read
        path falls back to the synth value next time."""
        payload = {"color_name": None}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.ensure_extra_field.assert_any_call("bambu_color_name")
        mock_spoolman_client.merge_spool_extra.assert_called_once()
        _, kwargs = mock_spoolman_client.merge_spool_extra.call_args
        # First positional arg is spool_id; second is the extra-dict patch.
        args = mock_spoolman_client.merge_spool_extra.call_args.args
        extra_patch = args[1] if len(args) > 1 else kwargs.get("new_fields", {})
        import json as _json

        assert _json.loads(extra_patch["bambu_color_name"]) == ""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_without_color_name_skips_extra_write(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """#1357: when color_name is omitted from the PATCH body the extra
        write is skipped entirely — no merge_spool_extra call, no ensure_extra
        call for bambu_color_name. Only fields the request explicitly set go
        through the extra round-trip."""
        payload = {"note": "only updating note"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        # No call should target bambu_color_name when color_name wasn't in the body.
        color_name_calls = [
            c
            for c in mock_spoolman_client.ensure_extra_field.call_args_list
            if c.args and c.args[0] == "bambu_color_name"
        ]
        assert color_name_calls == []

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_spool_not_found(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH returns 404 when Spoolman spool does not exist."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_spoolman_client.get_spool.side_effect = SpoolmanNotFoundError("spool not found")
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/999", json={"note": "x"})
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_delete_spool(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """DELETE /spoolman/inventory/spools/{id} deletes a spool."""
        response = await async_client.delete("/api/v1/spoolman/inventory/spools/42")

        assert response.status_code == 200
        assert response.json()["status"] == "deleted"
        mock_spoolman_client.delete_spool.assert_called_once_with(42)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_delete_spool_failure(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """DELETE returns 503 when Spoolman is unreachable."""
        from backend.app.services.spoolman import SpoolmanUnavailableError

        mock_spoolman_client.delete_spool.side_effect = SpoolmanUnavailableError("unreachable")
        response = await async_client.delete("/api/v1/spoolman/inventory/spools/42")
        assert response.status_code == 503

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_delete_spool_not_found(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """DELETE returns 404 when Spoolman reports the spool does not exist."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_spoolman_client.delete_spool.side_effect = SpoolmanNotFoundError("gone")
        response = await async_client.delete("/api/v1/spoolman/inventory/spools/42")
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_archive_spool_not_found(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """POST /archive returns 404 when Spoolman reports the spool does not exist."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_spoolman_client.set_spool_archived.side_effect = SpoolmanNotFoundError("gone")
        response = await async_client.post("/api/v1/spoolman/inventory/spools/42/archive")
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_restore_spool_not_found(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """POST /restore returns 404 when Spoolman reports the spool does not exist."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_spoolman_client.set_spool_archived.side_effect = SpoolmanNotFoundError("gone")
        response = await async_client.post("/api/v1/spoolman/inventory/spools/42/restore")
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_archive_spool(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """POST /spoolman/inventory/spools/{id}/archive archives a spool."""
        response = await async_client.post("/api/v1/spoolman/inventory/spools/42/archive")

        assert response.status_code == 200
        mock_spoolman_client.set_spool_archived.assert_called_once_with(42, archived=True)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_restore_spool(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """POST /spoolman/inventory/spools/{id}/restore restores an archived spool."""
        response = await async_client.post("/api/v1/spoolman/inventory/spools/42/restore")

        assert response.status_code == 200
        mock_spoolman_client.set_spool_archived.assert_called_once_with(42, archived=False)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_reset_spool_consumed_counter(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """POST /spoolman/inventory/spools/{id}/reset-consumed-counter zeroes the displayed counter.

        Parity with internal mode (#1644): the baseline lives in spool.extra and
        `_map_spoolman_spool` folds it into `weight_used_baseline`, so the
        displayed consumed counter (weight_used - baseline) reads 0 while every
        native Spoolman field — initial, remaining, used — is left alone.
        """
        response = await async_client.post("/api/v1/spoolman/inventory/spools/42/reset-consumed-counter")

        assert response.status_code == 200
        body = response.json()
        # Sample spool: label=1000, remaining=750, used_weight=250, baseline recorded at 250.
        assert body["weight_used"] == 250.0, "synthetic weight_used = label - remaining"
        assert body["weight_used_baseline"] == 250.0, "baseline absorbs the reset"
        assert body["weight_used"] - body["weight_used_baseline"] == 0, "displayed consumed = 0"
        assert body["label_weight"] - body["weight_used"] == 750, "remaining unchanged"
        mock_spoolman_client.reset_spool_consumed_counter.assert_called_once_with(42)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_reset_spool_consumed_counter(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Bulk endpoint resets each listed spool's counter and returns the count."""
        response = await async_client.post(
            "/api/v1/spoolman/inventory/spools/reset-consumed-counter-bulk",
            json={"spool_ids": [1, 2, 3]},
        )

        assert response.status_code == 200
        assert response.json() == {"reset": 3}
        assert mock_spoolman_client.reset_spool_consumed_counter.call_count == 3

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_reset_rejects_empty_list(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Empty list must be rejected — guards against accidental wildcard wipes."""
        response = await async_client.post(
            "/api/v1/spoolman/inventory/spools/reset-consumed-counter-bulk",
            json={"spool_ids": []},
        )

        assert response.status_code == 400
        mock_spoolman_client.reset_spool_consumed_counter.assert_not_called()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_sync_weight(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH /spoolman/inventory/spools/{id}/weight updates remaining weight."""
        payload = {"weight_grams": 850.0}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42/weight", json=payload)

        assert response.status_code == 200
        result = response.json()
        assert result["status"] == "ok"
        # remaining = 850 - 250 core = 600; weight_used = 1000 - 600 = 400
        assert result["weight_used"] == 400.0
        mock_spoolman_client.update_spool_full.assert_called_once_with(spool_id=42, remaining_weight=600.0)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_spool_returns_404_on_not_found(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH returns 404 when update_spool_full raises SpoolmanNotFoundError (I2)."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_spoolman_client.update_spool_full.side_effect = SpoolmanNotFoundError("gone")
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json={"note": "x"})
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_spool_returns_503_on_unavailable(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH returns 503 when update_spool_full raises SpoolmanUnavailableError (I2)."""
        from backend.app.services.spoolman import SpoolmanUnavailableError

        mock_spoolman_client.update_spool_full.side_effect = SpoolmanUnavailableError("down")
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json={"note": "x"})
        assert response.status_code == 503

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_sync_weight_returns_404_on_not_found(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH /weight returns 404 when update_spool_full raises SpoolmanNotFoundError (I2)."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_spoolman_client.update_spool_full.side_effect = SpoolmanNotFoundError("gone")
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42/weight", json={"weight_grams": 500.0})
        assert response.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_sync_weight_returns_503_on_unavailable(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH /weight returns 503 when update_spool_full raises SpoolmanUnavailableError (I2)."""
        from backend.app.services.spoolman import SpoolmanUnavailableError

        mock_spoolman_client.update_spool_full.side_effect = SpoolmanUnavailableError("down")
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42/weight", json={"weight_grams": 500.0})
        assert response.status_code == 503


class TestSpoolmanInventorySlicerFilament:
    """slicer_filament persistence via Spoolman extra dict.

    Spoolman has no native slicer_filament field — Bambuddy persists the
    BambuStudio preset under bambu_slicer_filament[_name] keys in the
    spool's extra dict and unwraps them in _map_spoolman_spool. Without
    this round-trip the user's slicer-preset selection on the spool form
    is silently dropped (#1114).
    """

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_persists_slicer_filament_to_extra(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH with slicer_filament writes bambu_slicer_filament to extra.

        Spoolman's PATCH MERGES extra keys, so we send via merge_spool_extra
        not update_spool_full. Values are JSON-encoded strings.
        """
        import json as _json

        mock_spoolman_client.ensure_extra_field = AsyncMock(return_value=True)

        response = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={
                "slicer_filament": "PFUSf543b298f8ea66",
                "slicer_filament_name": "Devil Design PLA Basic @Bambu Lab H2D 0.4 nozzle (Custom)",
            },
        )
        assert response.status_code == 200
        # Field registration is idempotent — must be called for each key
        ensure_calls = [c.args[0] for c in mock_spoolman_client.ensure_extra_field.call_args_list]
        assert "bambu_slicer_filament" in ensure_calls
        assert "bambu_slicer_filament_name" in ensure_calls
        # Values must be JSON-encoded so read-side can json.loads + .strip('"')
        mock_spoolman_client.merge_spool_extra.assert_called_once_with(
            42,
            {
                "bambu_slicer_filament": _json.dumps("PFUSf543b298f8ea66"),
                "bambu_slicer_filament_name": _json.dumps("Devil Design PLA Basic @Bambu Lab H2D 0.4 nozzle (Custom)"),
            },
        )

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_without_slicer_filament_skips_merge(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH without slicer_filament fields must not call merge_spool_extra.

        Avoids overwriting an existing preset with empty/null when the user
        just changed an unrelated field (e.g. note, weight).
        """
        response = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"note": "just changing the note"},
        )
        assert response.status_code == 200
        mock_spoolman_client.merge_spool_extra.assert_not_called()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_clears_slicer_filament_with_empty_string(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Empty-string slicer_filament writes the JSON-encoded "" sentinel.

        The read-side strip('"') resolves it to an empty string and falls
        back to filament.name — matches the user-facing "clear preset" flow.
        """
        import json as _json

        mock_spoolman_client.ensure_extra_field = AsyncMock(return_value=True)

        response = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"slicer_filament": "", "slicer_filament_name": ""},
        )
        assert response.status_code == 200
        mock_spoolman_client.merge_spool_extra.assert_called_once_with(
            42,
            {
                "bambu_slicer_filament": _json.dumps(""),
                "bambu_slicer_filament_name": _json.dumps(""),
            },
        )


class TestSpoolmanInventoryCostPerKg:
    """Tests for the two-step cost_per_kg create path (PT-C2)."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool_with_cost_per_kg_calls_price_update(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """POST with cost_per_kg calls update_spool_full with price= after creation."""
        from unittest.mock import AsyncMock

        mock_spoolman_client.update_spool_full = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)

        payload = {
            "material": "PLA",
            "brand": "Bambu Lab",
            "label_weight": 1000,
            "cost_per_kg": 24.99,
        }
        resp = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert resp.status_code == 200
        # update_spool_full must have been called with price=24.99
        calls = [
            c
            for c in mock_spoolman_client.update_spool_full.call_args_list
            if c.kwargs.get("price") == 24.99 or (c.args and 24.99 in c.args)
        ]
        assert len(calls) >= 1

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool_without_cost_per_kg_skips_price_update(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """POST without cost_per_kg does not call update_spool_full."""
        from unittest.mock import AsyncMock

        mock_spoolman_client.update_spool_full = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)

        payload = {"material": "PLA", "brand": "Bambu Lab", "label_weight": 1000}
        resp = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert resp.status_code == 200
        mock_spoolman_client.update_spool_full.assert_not_called()


class TestSpoolmanInventoryInputValidation:
    """Tests for input validation added as security hardening."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_rejects_material_too_long(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """material longer than 64 chars is rejected with 422."""
        payload = {"material": "A" * 65, "label_weight": 1000, "weight_used": 0}
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_rejects_note_too_long(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """note longer than 1000 chars is rejected with 422."""
        payload = {
            "material": "PLA",
            "label_weight": 1000,
            "weight_used": 0,
            "note": "x" * 1001,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_rejects_negative_weight_used(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Negative weight_used is rejected with 422."""
        payload = {"material": "PLA", "label_weight": 1000, "weight_used": -1.0}
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_rejects_zero_label_weight(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """label_weight of 0 is rejected (minimum is 1)."""
        payload = {"material": "PLA", "label_weight": 0, "weight_used": 0}
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_rejects_invalid_rgba(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Non-hex rgba string is rejected with 422."""
        payload = {"material": "PLA", "label_weight": 1000, "weight_used": 0, "rgba": "GGGGGGFF"}
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_accepts_valid_6char_rgba(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """A valid 6-char hex rgba is accepted."""
        payload = {"material": "PLA", "label_weight": 1000, "weight_used": 0, "rgba": "FF0000"}
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 200

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_weight_update_rejects_negative_grams(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Negative weight_grams on weight sync endpoint is rejected with 422."""
        response = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/weight",
            json={"weight_grams": -50.0},
        )
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_rejects_tag_uid_too_long(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """tag_uid longer than 30 chars is rejected with 422 (NFC UID max 10 bytes = 20 hex chars, capped at 30)."""
        payload = {"tag_uid": "A" * 65}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_rejects_tray_uuid_too_long(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """tray_uuid longer than 32 chars is rejected with 422."""
        payload = {"tray_uuid": "B" * 65}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize("uuid_len", [16, 31])
    async def test_update_rejects_tray_uuid_too_short(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
        uuid_len: int,
    ):
        """tray_uuid shorter than 32 chars is rejected (min_length=max_length=32)."""
        payload = {"tray_uuid": "A" * uuid_len}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_rejects_rgba_nine_chars(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """rgba must be max 8 hex chars; 9-char value is rejected with 422."""
        payload = {"rgba": "FF0000FFA"}  # 9 chars
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_uid_below_min_length_rejected(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """tag_uid shorter than 8 hex chars is rejected with 422 (PT-I5)."""
        payload = {"tag_uid": "AABBCC"}  # 6 chars, below min_length=8
        resp = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert resp.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_invalid_spoolman_url_scheme_returns_400(
        self,
        async_client: AsyncClient,
        db_session,
        mock_spoolman_client,
    ):
        """A spoolman_url with a non-http(s) scheme is rejected."""
        from backend.app.models.settings import Settings

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value="ftp://evil.internal/"))
        await db_session.commit()

        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert response.status_code == 400
        assert "http" in response.json()["detail"].lower()

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "evil_url",
        [
            "file:///etc/passwd",
            "gopher://127.0.0.1:70/",
            "dict://internal.corp/",
            "javascript:alert(1)",
            "http://169.254.169.254/latest/meta-data/",  # AWS IMDS
            "http://100.100.100.200/",  # Alibaba Cloud metadata
            "http://[fd00:ec2::254]/",  # AWS IMDS IPv6
            "http://0.0.0.0/",  # unspecified
            "http://224.0.0.1/",  # IPv4 multicast
            "http://[ff02::1]/",  # IPv6 multicast
            "http://[::ffff:169.254.169.254]/",  # IPv4-mapped IPv6 IMDS bypass
            "http://2130706433/",  # decimal-encoded 127.0.0.1
            "http://0x7f000001/",  # hex-encoded 127.0.0.1
        ],
    )
    async def test_ssrf_blocked_schemes_and_addresses(
        self,
        async_client: AsyncClient,
        db_session,
        mock_spoolman_client,
        evil_url: str,
    ):
        """SSRF: dangerous schemes, cloud metadata IPs, multicast, unspecified,
        and numeric-encoded IPs must be rejected with 400. Loopback and
        RFC-1918 private ranges are allowed — they are legitimate Spoolman
        topologies for self-hosted Bambuddy deployments."""
        from backend.app.models.settings import Settings

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value=evil_url))
        await db_session.commit()

        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert response.status_code == 400, (
            f"Expected 400 for SSRF URL {evil_url!r} but got {response.status_code}: {response.json()}"
        )

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "lan_url",
        [
            "http://127.0.0.1:7912/",  # loopback
            "http://[::1]:7912/",  # IPv6 loopback
            "http://192.168.1.50:7912/",  # RFC-1918 /16
            "http://10.0.0.5:7912/",  # RFC-1918 /8
            "http://172.20.0.3:7912/",  # RFC-1918 /12
        ],
    )
    async def test_ssrf_allows_lan_spoolman_topologies(
        self,
        async_client: AsyncClient,
        db_session,
        mock_spoolman_client,
        lan_url: str,
    ):
        """Regression: Bambuddy's normal deployment is LAN-local Spoolman.
        Loopback and RFC-1918 private addresses must NOT be rejected as SSRF."""
        from backend.app.models.settings import Settings

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value=lan_url))
        await db_session.commit()

        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert response.status_code != 400, f"LAN URL {lan_url!r} was incorrectly blocked as SSRF: {response.json()}"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_rejects_storage_location_too_long(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """storage_location longer than 255 chars is rejected with 422."""
        payload = {
            "material": "PLA",
            "label_weight": 1000,
            "weight_used": 0,
            "storage_location": "x" * 256,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_rejects_storage_location_too_long(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """storage_location longer than 255 chars on PATCH is rejected with 422."""
        payload = {"storage_location": "y" * 256}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 422


class TestStorageLocationPassthrough:
    """Tests that storage_location is correctly passed to and from Spoolman."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_spools_maps_spoolman_location_to_storage_location(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Spoolman's location field is exposed as storage_location in the response."""
        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        spool = response.json()[0]
        assert spool["storage_location"] == "Printer1 - AMS A1"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_spools_null_location_gives_null_storage_location(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """A Spoolman spool with no location gives null storage_location."""
        spool_no_loc = {**SAMPLE_SPOOLMAN_SPOOL, "location": None}
        mock_spoolman_client.get_all_spools.return_value = [spool_no_loc]
        response = await async_client.get("/api/v1/spoolman/inventory/spools")
        spool = response.json()[0]
        assert spool["storage_location"] is None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_passes_storage_location_to_spoolman(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """storage_location is forwarded as location when creating a Spoolman spool."""
        payload = {
            "material": "PLA",
            "label_weight": 1000,
            "weight_used": 0,
            "storage_location": "Shelf B",
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.create_spool.assert_called_once()
        _, kwargs = mock_spoolman_client.create_spool.call_args
        assert kwargs.get("location") == "Shelf B"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_passes_storage_location_to_spoolman(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """storage_location is forwarded as location when updating a Spoolman spool."""
        payload = {"storage_location": "Drawer 3"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.update_spool_full.assert_called_once()
        _, kwargs = mock_spoolman_client.update_spool_full.call_args
        assert kwargs.get("location") == "Drawer 3"
        assert kwargs.get("clear_location") is False

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_clears_storage_location_when_null_sent(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Explicitly sending null storage_location clears the Spoolman location."""
        payload = {"storage_location": None}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        _, kwargs = mock_spoolman_client.update_spool_full.call_args
        assert kwargs.get("clear_location") is True

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_clears_storage_location_when_empty_string_sent(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """Sending an empty string for storage_location also clears the Spoolman location."""
        payload = {"storage_location": ""}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        _, kwargs = mock_spoolman_client.update_spool_full.call_args
        assert kwargs.get("clear_location") is True

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_omitting_storage_location_does_not_write_location_to_spoolman(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH without storage_location in the payload must not touch Spoolman's location field.

        Regression test for the round-trip bug: opening the edit modal and saving without
        changing the location would previously echo the current Spoolman value back
        (storage_location_changed=False branch used current.get("location") instead of None).
        """
        # Payload deliberately omits storage_location — simulates saving the modal
        # without touching that field.
        payload = {"note": "just updating the note"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.update_spool_full.assert_called_once()
        _, kwargs = mock_spoolman_client.update_spool_full.call_args
        # location must be None so update_spool_full skips writing the field entirely
        assert kwargs.get("location") is None
        # clear_location must also be False — we are not explicitly clearing it either
        assert kwargs.get("clear_location") is False


class TestColorNamePassthrough:
    """color_name persistence via spool.extra.bambu_color_name (#1357).

    Spoolman 0.23.1 has no `color_name` field on Filament, so Bambuddy owns
    the round-trip via the spool's extra dict — same shape as the existing
    bambu_slicer_filament storage. These tests pin that the create/update
    routes register the extra field and write to merge_spool_extra, NOT to
    find_or_create_filament's color_name parameter.
    """

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_writes_color_name_to_spool_extra(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """color_name from create payload lands in spool.extra.bambu_color_name."""
        import json as _json

        payload = {
            "material": "PLA",
            "label_weight": 1000,
            "weight_used": 0,
            "color_name": "Bambu Green",
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.ensure_extra_field.assert_any_call("bambu_color_name")
        mock_spoolman_client.merge_spool_extra.assert_called_once()
        args = mock_spoolman_client.merge_spool_extra.call_args.args
        extra_patch = args[1]
        assert _json.loads(extra_patch["bambu_color_name"]) == "Bambu Green"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_writes_color_name_to_spool_extra(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """color_name from update payload lands in spool.extra.bambu_color_name —
        this is the #1357 reproduction: previously the value went to
        filament.color_name which Spoolman silently dropped."""
        import json as _json

        payload = {"color_name": "Jade White"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        mock_spoolman_client.ensure_extra_field.assert_any_call("bambu_color_name")
        mock_spoolman_client.merge_spool_extra.assert_called_once()
        args = mock_spoolman_client.merge_spool_extra.call_args.args
        extra_patch = args[1]
        assert _json.loads(extra_patch["bambu_color_name"]) == "Jade White"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_omits_color_name_skips_extra_write(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """When color_name is absent from the PATCH body, the route must not
        write to spool.extra at all (preserves any existing value)."""
        payload = {"note": "no color_name here"}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == 200
        color_name_calls = [
            c
            for c in mock_spoolman_client.ensure_extra_field.call_args_list
            if c.args and c.args[0] == "bambu_color_name"
        ]
        assert color_name_calls == []


class TestSpoolmanInventoryAuth:
    """Write/delete endpoints require INVENTORY_UPDATE when auth is enabled."""

    @pytest.fixture
    async def auth_and_spoolman_settings(self, db_session):
        """Enable both Spoolman and auth."""
        from backend.app.models.settings import Settings

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value="http://localhost:7912"))
        db_session.add(Settings(key="auth_enabled", value="true"))
        await db_session.commit()

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "method,path,payload",
        [
            ("POST", "/api/v1/spoolman/inventory/spools", {"material": "PLA", "label_weight": 1000, "weight_used": 0}),
            (
                "POST",
                "/api/v1/spoolman/inventory/spools/bulk",
                {"spool": {"material": "PLA", "label_weight": 1000, "weight_used": 0}, "quantity": 1},
            ),
            ("PATCH", "/api/v1/spoolman/inventory/spools/42", {"note": "x"}),
            ("DELETE", "/api/v1/spoolman/inventory/spools/42", None),
            ("POST", "/api/v1/spoolman/inventory/spools/42/archive", None),
            ("POST", "/api/v1/spoolman/inventory/spools/42/restore", None),
            ("PATCH", "/api/v1/spoolman/inventory/spools/42/weight", {"weight_grams": 100.0}),
        ],
    )
    async def test_write_endpoints_require_auth(
        self,
        async_client: AsyncClient,
        auth_and_spoolman_settings,
        method: str,
        path: str,
        payload: dict | None,
    ):
        """All write/delete endpoints return 401 when auth is enabled and no token is provided."""
        response = await async_client.request(method, path, json=payload)
        assert response.status_code == 401, (
            f"{method} {path} should require auth but got {response.status_code}: {response.json()}"
        )

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "method,path",
        [
            ("GET", "/api/v1/spoolman/inventory/spools"),
            ("GET", "/api/v1/spoolman/inventory/spools/42"),
        ],
    )
    async def test_read_endpoints_require_auth(
        self,
        async_client: AsyncClient,
        auth_and_spoolman_settings,
        method: str,
        path: str,
    ):
        """Read endpoints also require auth when auth is enabled."""
        response = await async_client.request(method, path)
        assert response.status_code == 401, (
            f"{method} {path} should require auth but got {response.status_code}: {response.json()}"
        )

    @pytest.fixture
    async def viewer_token(self, db_session):
        """Create a Viewer-group user (INVENTORY_READ only, no INVENTORY_UPDATE)."""
        from sqlalchemy import select

        from backend.app.core.auth import create_access_token, get_password_hash
        from backend.app.models.group import Group
        from backend.app.models.settings import Settings
        from backend.app.models.user import User

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value="http://localhost:7912"))
        db_session.add(Settings(key="auth_enabled", value="true"))
        await db_session.commit()

        viewer_group = (await db_session.execute(select(Group).where(Group.name == "Viewers"))).scalar_one()
        viewer = User(
            username="sm_inv_viewer",
            password_hash=get_password_hash("pw"),
            is_active=True,
        )
        viewer.groups.append(viewer_group)
        db_session.add(viewer)
        await db_session.commit()
        return create_access_token(data={"sub": viewer.username})

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "method,path,payload",
        [
            ("POST", "/api/v1/spoolman/inventory/spools", {"material": "PLA", "label_weight": 1000, "weight_used": 0}),
            (
                "POST",
                "/api/v1/spoolman/inventory/spools/bulk",
                {"spool": {"material": "PLA", "label_weight": 1000, "weight_used": 0}, "quantity": 1},
            ),
            ("PATCH", "/api/v1/spoolman/inventory/spools/42", {"note": "x"}),
            ("DELETE", "/api/v1/spoolman/inventory/spools/42", None),
            ("POST", "/api/v1/spoolman/inventory/spools/42/archive", None),
            ("POST", "/api/v1/spoolman/inventory/spools/42/restore", None),
            ("PATCH", "/api/v1/spoolman/inventory/spools/42/weight", {"weight_grams": 100.0}),
        ],
    )
    async def test_write_endpoints_return_403_for_viewer(
        self,
        async_client: AsyncClient,
        viewer_token,
        method: str,
        path: str,
        payload: dict | None,
    ):
        """Viewer-group users (INVENTORY_READ, no INVENTORY_UPDATE) get 403 on write endpoints."""
        response = await async_client.request(
            method,
            path,
            json=payload,
            headers={"Authorization": f"Bearer {viewer_token}"},
        )
        assert response.status_code == 403, (
            f"{method} {path} should return 403 for read-only user but got {response.status_code}: {response.json()}"
        )
        # Error body must mention the permission string so a "banned-user middleware"
        # regression (generic 403 with no permission context) doesn't pass silently.
        detail = response.json().get("detail", "")
        assert "inventory:update" in detail, f"Expected 'inventory:update' in 403 detail but got: {detail!r}"


# ---------------------------------------------------------------------------
# Additional regression tests for second-round review items
# ---------------------------------------------------------------------------


class TestSpoolmanInventorySecurityExtras:
    """Additional security/validation tests added in second review round."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_rejects_double_hash_rgba(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """SEC-3: rgba like '##FF0000' (double hash) must be rejected with 422."""
        payload = {"material": "PLA", "label_weight": 1000, "weight_used": 0, "rgba": "##FF0000"}
        response = await async_client.post("/api/v1/spoolman/inventory/spools", json=payload)
        assert response.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize("spool_id", [0, -1])
    async def test_path_param_non_positive_spool_id_returns_422(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
        spool_id: int,
    ):
        """SEC-5: /spools/0 and /spools/-1 must be rejected with 422 (Path gt=0)."""
        response = await async_client.get(f"/api/v1/spoolman/inventory/spools/{spool_id}")
        assert response.status_code == 422, f"Expected 422 for spool_id={spool_id} but got {response.status_code}"

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "tag_uid,expected_status",
        [
            # After B1 fix: non-null tag_uid on PATCH /spools/{id} is rejected (use /tag endpoint)
            ("A" * 30, 422),  # non-null → 422 (use /tag endpoint instead)
            ("DEADBEEF12345678", 422),  # non-null → 422 regardless of length
            ("A" * 31, 422),  # exceeds max_length — also 422
            ("A" * 32, 422),  # tray_uuid-length value — also 422
        ],
    )
    async def test_tag_uid_length_boundary(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
        tag_uid: str,
        expected_status: int,
    ):
        """tag_uid on PATCH /spools/{id} — all non-null values are rejected (B1 fix; use /tag endpoint)."""
        payload = {"tag_uid": tag_uid}
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json=payload)
        assert response.status_code == expected_status, (
            f"tag_uid len={len(tag_uid)}: expected {expected_status} but got {response.status_code}"
        )

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_create_partial_failure_returns_207(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """I9: bulk create with quantity=3 where middle call fails → 207 Multi-Status."""
        from backend.app.services.spoolman import SpoolmanUnavailableError

        results = [SAMPLE_SPOOLMAN_SPOOL, SpoolmanUnavailableError("Spoolman down"), SAMPLE_SPOOLMAN_SPOOL]
        mock_spoolman_client.create_spool.side_effect = results

        payload = {
            "spool": {"material": "PLA", "label_weight": 1000, "weight_used": 0},
            "quantity": 3,
        }
        response = await async_client.post("/api/v1/spoolman/inventory/spools/bulk", json=payload)
        assert response.status_code == 207, (
            f"Expected 207 Multi-Status for partial failure but got {response.status_code}"
        )
        body = response.json()
        assert isinstance(body, dict)
        assert body["requested_count"] == 3
        assert body["failed_count"] == 1
        assert len(body["created"]) == 2


class TestTagClearPreservesExtraKeys:
    """Regression test: clearing tag_uid must not wipe unrelated Spoolman extra fields."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_clear_preserves_custom_extra_key(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """PATCH tag_uid=None clears tag without dropping unrelated extra keys.

        Spoolman PATCHes the extra dict by MERGING — popping a key from the
        dict and sending the rest doesn't actually clear it. The endpoint
        sets tag = json.dumps("") explicitly; read-side filters strip the
        wrapping quotes and treat the empty string as "no tag" (#1114).
        """
        import json as _json

        spool_with_extra = {
            **SAMPLE_SPOOLMAN_SPOOL,
            "extra": {"tag": '"AABBCCDDEEFF0011AABBCCDDEEFF0011"', "custom_key": "keep_me"},
        }
        mock_spoolman_client.get_spool = AsyncMock(return_value=spool_with_extra)
        mock_spoolman_client.update_spool_full = AsyncMock(return_value=spool_with_extra)

        response = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"tag_uid": None},
        )
        assert response.status_code == 200

        mock_spoolman_client.update_spool_full.assert_called_once()
        _, kwargs = mock_spoolman_client.update_spool_full.call_args
        sent_extra = kwargs.get("extra")
        assert sent_extra is not None, "extra must be sent when tag is cleared"
        assert sent_extra.get("tag") == _json.dumps(""), (
            "tag must be set to JSON empty-string sentinel (Spoolman PATCH merges; "
            "popping the key would leave the previous value in place)"
        )
        assert sent_extra.get("custom_key") == "keep_me", "unrelated extra keys must survive"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_clear_refetches_spool_inside_lock(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """B7: tag-clear does a fresh get_spool() re-fetch inside the lock, not the stale one.

        Simulates a write that changes extra between the initial get_spool (used for
        other field resolution) and the lock acquisition.  The extra sent to
        update_spool_full must come from the second (in-lock) fetch, not the first.
        """
        stale_extra = {"tag": '"AABBCCDD"', "custom_key": "stale_value"}
        fresh_extra = {"tag": '"AABBCCDD"', "custom_key": "fresh_value"}

        stale_spool = {**SAMPLE_SPOOLMAN_SPOOL, "extra": stale_extra}
        fresh_spool = {**SAMPLE_SPOOLMAN_SPOOL, "extra": fresh_extra}

        # First call returns stale; second call (inside lock) returns fresh
        mock_spoolman_client.get_spool = AsyncMock(side_effect=[stale_spool, fresh_spool])
        mock_spoolman_client.update_spool_full = AsyncMock(return_value=fresh_spool)

        response = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"tag_uid": None, "tray_uuid": None},
        )
        assert response.status_code == 200

        # get_spool called twice: once for field resolution, once for fresh extra fetch
        assert mock_spoolman_client.get_spool.call_count == 2

        import json as _json

        _, kwargs = mock_spoolman_client.update_spool_full.call_args
        sent_extra = kwargs.get("extra")
        assert sent_extra is not None
        # Tag is set to the JSON empty-string sentinel (not popped) — Spoolman
        # PATCH merges, so popping the key would leave the previous value.
        assert sent_extra.get("tag") == _json.dumps("")
        # custom_key must come from the fresh re-fetch, not the stale first fetch
        assert sent_extra.get("custom_key") == "fresh_value"


class TestSpoolmanInventorySSRFSpoolBuddyPath:
    """SSRF tests for _get_spoolman_client_or_none (nfc/* and scale/ endpoints)."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "evil_url",
        [
            "file:///etc/passwd",
            "http://169.254.169.254/latest/meta-data/",  # AWS IMDS
            "http://0.0.0.0/",  # unspecified
            "http://[::ffff:169.254.169.254]/",  # IPv4-mapped IMDS bypass
        ],
    )
    async def test_nfc_tag_scanned_with_ssrf_url_ignores_spoolman(
        self,
        async_client: AsyncClient,
        db_session,
        evil_url: str,
    ):
        """SSRF: _get_spoolman_client_or_none silently disables Spoolman for unsafe URLs
        on the SpoolBuddy NFC path (tag-scanned broadcasts unknown_tag, not 400)."""
        from backend.app.models.settings import Settings

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value=evil_url))
        await db_session.commit()

        from unittest.mock import AsyncMock, patch

        with patch("backend.app.api.routes.spoolbuddy.ws_manager") as mock_ws:
            mock_ws.broadcast = AsyncMock()
            resp = await async_client.post(
                "/api/v1/spoolbuddy/nfc/tag-scanned",
                json={"device_id": "sb-ssrf", "tag_uid": "AABBCCDD"},
            )

        # Must not crash or proxy the SSRF URL — unknown_tag is the safe degraded response
        assert resp.status_code == 200
        if mock_ws.broadcast.called:
            msg = mock_ws.broadcast.call_args[0][0]
            assert msg["type"] == "spoolbuddy_unknown_tag"

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "evil_url",
        [
            "http://169.254.169.254/latest/meta-data/",  # AWS IMDS
            "http://[::ffff:169.254.169.254]/",  # IPv4-mapped IMDS bypass
        ],
    )
    async def test_nfc_write_result_with_ssrf_url_degrades_gracefully(
        self,
        async_client: AsyncClient,
        db_session,
        evil_url: str,
    ):
        """SSRF: write-result with unsafe Spoolman URL must not proxy to the evil host.

        write-result calls Spoolman to write-back the tag UID when data_origin='spoolman'.
        With an SSRF URL, _get_spoolman_client_or_none returns None so the call is skipped
        and the route returns 502 (tag written but link not persisted — not a server crash).
        """
        import json as _json

        from backend.app.models.settings import Settings
        from backend.app.models.spoolbuddy_device import SpoolBuddyDevice

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value=evil_url))
        # Register the device so the route doesn't 404 before reaching the SSRF guard.
        db_session.add(
            SpoolBuddyDevice(
                device_id="sb-ssrf-wr",
                hostname="sb-ssrf-wr.local",
                ip_address="127.0.0.1",
                pending_command="write_tag",
                pending_write_payload=_json.dumps({"spool_id": 99, "ndef_data_hex": "DEAD", "data_origin": "spoolman"}),
            )
        )
        await db_session.commit()

        from unittest.mock import AsyncMock, patch

        with patch("backend.app.api.routes.spoolbuddy.ws_manager") as mock_ws:
            mock_ws.broadcast = AsyncMock()
            resp = await async_client.post(
                "/api/v1/spoolbuddy/nfc/write-result",
                json={
                    "device_id": "sb-ssrf-wr",
                    "spool_id": 99,
                    "tag_uid": "AABBCCDD",
                    "success": True,
                },
            )

        # 502 = tag written to NFC but Spoolman link not persisted (SSRF guard blocked it).
        # Must not be 500 (crash) and must not have proxied to the evil host.
        assert resp.status_code == 502

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "evil_url",
        [
            "http://169.254.169.254/latest/meta-data/",  # AWS IMDS
        ],
    )
    async def test_scale_update_weight_with_ssrf_url_degrades_gracefully(
        self,
        async_client: AsyncClient,
        db_session,
        evil_url: str,
    ):
        """SSRF: scale weight update with unsafe Spoolman URL must not proxy to the evil host."""
        from backend.app.models.settings import Settings

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value=evil_url))
        await db_session.commit()

        from unittest.mock import AsyncMock, patch

        with patch("backend.app.api.routes.spoolbuddy.ws_manager") as mock_ws:
            mock_ws.broadcast = AsyncMock()
            resp = await async_client.post(
                "/api/v1/spoolbuddy/scale/update-spool-weight",
                json={"device_id": "sb-ssrf-scale", "spool_id": 1, "weight_grams": 500.0},
            )

        # Must not crash or proxy to an SSRF host
        assert resp.status_code in (200, 404, 422)


class TestMergeSpoolExtraPreservesKeys:
    """Unit-level test for merge_spool_extra key preservation (via mocked Spoolman)."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_merge_preserves_unrelated_extra_keys(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_spoolman_client,
    ):
        """merge_spool_extra must deep-merge rather than overwrite the extra dict.

        Seed extra={"custom_key": "keep_me", "tag": "old"}.
        After merging {"tag": "new"}, the PATCH payload must still contain custom_key.
        """
        from unittest.mock import AsyncMock, patch

        existing_spool = {
            **SAMPLE_SPOOLMAN_SPOOL,
            "extra": {"custom_key": "keep_me", "tag": '"old"'},
        }
        updated_spool = {**existing_spool, "extra": {"custom_key": "keep_me", "tag": '"new"'}}

        mock_client = mock_spoolman_client
        mock_client.get_spool = AsyncMock(return_value=existing_spool)
        mock_client.update_spool_full = AsyncMock(return_value=updated_spool)

        # Call merge_spool_extra directly through the service
        from backend.app.services.spoolman import SpoolmanClient

        client = SpoolmanClient.__new__(SpoolmanClient)
        client.base_url = "http://localhost:7912"
        client.api_url = "http://localhost:7912/api/v1"
        client._extra_locks = {}

        async def _mock_get(spool_id):
            return existing_spool

        async def _mock_update(spool_id, **kwargs):
            # Capture what was actually sent
            _mock_update.captured_extra = kwargs.get("extra")
            return updated_spool

        _mock_update.captured_extra = None
        client.get_spool = _mock_get
        client.update_spool_full = _mock_update

        result = await client.merge_spool_extra(42, {"tag": '"new"'})

        # The merged extra must include the unrelated key
        assert _mock_update.captured_extra is not None
        assert _mock_update.captured_extra.get("custom_key") == "keep_me"
        assert _mock_update.captured_extra.get("tag") == '"new"'
        assert result is not None


class TestGetClientValueError:
    """Test the ValueError branch in _get_client when init_spoolman_client fails (Gap 5)."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_returns_400_when_init_spoolman_client_raises_value_error(
        self, async_client: AsyncClient, spoolman_settings
    ):
        """If init_spoolman_client raises ValueError after SSRF check passes, return HTTP 400."""
        with (
            patch(
                "backend.app.api.routes.spoolman_inventory.get_spoolman_client",
                AsyncMock(return_value=None),
            ),
            patch(
                "backend.app.api.routes.spoolman_inventory.init_spoolman_client",
                AsyncMock(side_effect=ValueError("unsupported scheme")),
            ),
        ):
            resp = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert resp.status_code == 400
        assert "unsupported scheme" in resp.json()["detail"]


class TestBulkCreateWithPriceFailure:
    """Test that bulk create handles price-update failures per C1/C8 semantics."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_create_price_503_moves_spool_to_failures(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """When price update fails (503), the spool goes to failures — overall returns 207 if at least one succeeds."""
        from backend.app.services.spoolman import SpoolmanUnavailableError

        # First price update fails (SpoolmanUnavailableError → 503), second succeeds
        mock_spoolman_client.update_spool_full = AsyncMock(
            side_effect=[SpoolmanUnavailableError("price server down"), SAMPLE_SPOOLMAN_SPOOL]
        )
        mock_spoolman_client.create_spool = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)

        payload = {
            "spool": {
                "material": "PLA",
                "brand": "Bambu Lab",
                "label_weight": 1000,
                "cost_per_kg": 19.99,
            },
            "quantity": 2,
        }
        resp = await async_client.post("/api/v1/spoolman/inventory/spools/bulk", json=payload)
        # One spool succeeded, one failed (price 503) → 207 Partial
        assert resp.status_code == 207
        data = resp.json()
        assert len(data["created"]) == 1
        assert data["failed_count"] == 1
        # Both Spoolman creates were attempted
        assert mock_spoolman_client.create_spool.call_count == 2
        # Both price updates were attempted
        assert mock_spoolman_client.update_spool_full.call_count == 2


class TestSpoolTagLinkValidation:
    """NEW-B1: /spools/{id}/tag endpoint validates tag_uid length and content."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_uid_6_chars_rejected(self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client):
        """tag_uid with 6 hex chars is rejected — minimum is 8 chars (4-byte UID)."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": "AABBCC"},  # 6 chars — below new minimum
        )
        assert resp.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_uid_all_zeros_rejected(self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client):
        """tag_uid that is all-zero bytes is rejected as an unwritten/blank tag."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": "00000000000000"},  # 14 zeros
        )
        assert resp.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_uid_valid_14_chars_accepted(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """tag_uid with 14 valid hex chars (7-byte UID) is accepted."""
        # This tag is not in SAMPLE_SPOOLMAN_SPOOL so no duplicate conflict.
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": "AABBCCDD112233"},  # 14 chars, valid, not all-zeros
        )
        assert resp.status_code == 200

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_uid_8_chars_accepted(self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client):
        """tag_uid with 8 hex chars (4-byte Bambu Lab NFC UID) is accepted after min_length fix."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": "2728C17B"},  # 8 chars — real Bambu Lab 4-byte hardware UID
        )
        assert resp.status_code == 200

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_tag_uid_8_zeros_rejected(self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client):
        """tag_uid with 8 zero chars is rejected — all-zeros validator applies at the new minimum."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": "00000000"},  # 8 zeros — meets min_length but is a blank/unwritten tag
        )
        assert resp.status_code == 422


class TestLinkTagDuplicate:
    """NEW-I1: /spools/{id}/tag returns 409 when another spool already has the same tag."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_link_tag_returns_200_when_tag_not_on_another_spool(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """Linking a fresh tag to spool 42 returns 200 — no duplicate in Spoolman."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": "AABBCCDD112233"},  # not in SAMPLE_SPOOLMAN_SPOOL
        )
        assert resp.status_code == 200
        mock_spoolman_client.update_spool_full.assert_called_once()

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_link_tag_returns_409_when_same_tag_on_different_spool(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """Linking spool 99 to a tag that spool 42 already carries must return 409."""
        # SAMPLE_SPOOLMAN_SPOOL (id=42) has extra.tag = '"AABBCCDDEEFF0011AABBCCDDEEFF0011"'.
        # Attempting to assign the same tag to spool 99 must be rejected.
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/99/tag",
            json={"tray_uuid": "AABBCCDDEEFF0011AABBCCDDEEFF0011"},  # 32-char tray UUID
        )
        assert resp.status_code == 409
        detail = resp.json()["detail"]
        assert "42" in str(detail)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_the_409_is_the_same_structured_detail_as_the_built_in_route(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """#3110: one shape for both inventory modes, not two prose sentences.

        The built-in route said "already linked to another active spool" and
        named nobody; this one named the spool but only inside a sentence. A
        client had to parse prose, and a different sentence per mode.
        """
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/99/tag",
            json={"tray_uuid": "AABBCCDDEEFF0011AABBCCDDEEFF0011"},
        )

        assert resp.status_code == 409
        detail = resp.json()["detail"]
        assert detail["code"] == "tag_already_linked"
        assert detail["spool_id"] == 42
        assert detail["field"] == "tray_uuid"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_the_field_follows_the_precedence_the_tag_itself_uses(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """tray_uuid wins over tag_uid when both are sent, so `field` says so."""
        mock_spoolman_client.get_all_spools.return_value = [
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 42, "extra": {"tag": '"AABBCCDDEEFF0011"'}}
        ]

        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/99/tag",
            json={"tag_uid": "AABBCCDDEEFF0011"},
        )

        assert resp.status_code == 409
        assert resp.json()["detail"]["field"] == "tag_uid"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_duplicate_holders_yield_the_lowest_id(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """Spoolman has no unique constraint on extra.tag either.

        Whichever row the scan reached first was an arbitrary answer; the
        built-in route names the lowest id, so this one does too.
        """
        tag = '"AABBCCDDEEFF0011AABBCCDDEEFF0011"'
        mock_spoolman_client.get_all_spools.return_value = [
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 77, "extra": {"tag": tag}},
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 42, "extra": {"tag": tag}},
        ]

        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/99/tag",
            json={"tray_uuid": "AABBCCDDEEFF0011AABBCCDDEEFF0011"},
        )

        assert resp.status_code == 409
        assert resp.json()["detail"]["spool_id"] == 42

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_a_malformed_row_after_the_holder_does_not_sink_the_request(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """extra is free-form and edited outside Bambuddy.

        Naming the lowest id means reading every row, where the old loop
        stopped at its first match -- so a row whose extra.tag is a JSON null
        (which .get("tag", "") hands back as None, not the default) sits
        between the caller and their 409 in a way it never used to.
        """
        tag = '"AABBCCDDEEFF0011AABBCCDDEEFF0011"'
        mock_spoolman_client.get_all_spools.return_value = [
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 42, "extra": {"tag": tag}},
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 55, "extra": {"tag": None}},
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 56, "extra": {"tag": 12345}},
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 57, "extra": None},
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 58, "extra": []},
        ]

        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/99/tag",
            json={"tray_uuid": "AABBCCDDEEFF0011AABBCCDDEEFF0011"},
        )

        assert resp.status_code == 409
        assert resp.json()["detail"]["spool_id"] == 42

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_a_malformed_row_is_not_itself_read_as_a_holder(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """A link with no real conflict still succeeds past those rows."""
        mock_spoolman_client.get_all_spools.return_value = [
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 55, "extra": {"tag": None}},
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 56, "extra": {"tag": 12345}},
            {**SAMPLE_SPOOLMAN_SPOOL, "id": 57, "extra": None},
        ]

        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": "AABBCCDD112233"},
        )

        assert resp.status_code == 200
        mock_spoolman_client.update_spool_full.assert_called_once()


class TestSpoolmanInventoryUpdateCoreWeight:
    """core_weight is forwarded to Spoolman when sent — any value should be accepted."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_patch_core_weight_other_than_250_accepted(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """PATCH with core_weight != 250 is accepted and carried through, not rejected."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"core_weight": 100},
        )
        assert resp.status_code == 200

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_patch_core_weight_250_explicitly_is_accepted(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """PATCH with core_weight=250 (the default) is valid and returns 200."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"core_weight": 250},
        )
        assert resp.status_code == 200

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_patch_without_core_weight_is_accepted(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """PATCH without core_weight (omitted) must not trigger the validator — returns 200."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"note": "no core_weight key"},
        )
        assert resp.status_code == 200


class TestUnlinkSpool:
    """POST /spoolman/spools/{id}/unlink clears Spoolman tag without re-entrant lock deadlock.

    Spoolman PATCHes the extra dict by MERGING — popping a key + sending the
    rest doesn't clear the popped key. The endpoint sends the JSON empty-string
    sentinel ('""') which the read-side filters strip. (#1114)

    The endpoint uses merge_spool_extra (not update_spool_full directly)
    because (a) merge_spool_extra owns the per-spool extra_lock for atomic
    read-modify-write semantics, and (b) wrapping it in another extra_lock
    would deadlock — asyncio.Lock is not re-entrant.
    """

    @pytest.fixture
    def mock_unlink_client(self):
        """Mock Spoolman client for the spoolman.py (non-inventory) route."""
        spool_with_tag = {
            **SAMPLE_SPOOLMAN_SPOOL,
            "extra": {"tag": '"AABBCCDDEEFF0011AABBCCDDEEFF0011"', "custom": "keep"},
        }
        mock_client = MagicMock()
        mock_client.base_url = "http://localhost:7912"
        mock_client.health_check = AsyncMock(return_value=True)
        mock_client.get_spool = AsyncMock(return_value=spool_with_tag)
        # merge_spool_extra returns the spool with the tag cleared (and custom
        # preserved) — that's what the read-side will see after the fix.
        mock_client.merge_spool_extra = AsyncMock(
            return_value={**spool_with_tag, "extra": {"tag": '""', "custom": "keep"}}
        )

        with (
            patch(
                "backend.app.api.routes.spoolman.get_spoolman_client",
                AsyncMock(return_value=mock_client),
            ),
            patch(
                "backend.app.api.routes.spoolman.init_spoolman_client",
                AsyncMock(return_value=mock_client),
            ),
        ):
            yield mock_client

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_unlink_sets_tag_to_json_empty_string(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_unlink_client,
    ):
        """Unlink calls merge_spool_extra with the JSON-empty-string sentinel.

        Pre-fix the endpoint did `cur_extra.pop("tag")` then PATCHed the rest.
        Spoolman silently kept the previous tag because the key wasn't in the
        payload (PATCH merges). Now the endpoint sends `{"tag": '""'}` and
        the read-side .strip('"') resolves it to "" → spool drops out of
        get_linked_spools.
        """
        import json as _json

        resp = await async_client.post("/api/v1/spoolman/spools/42/unlink")
        assert resp.status_code == 200

        mock_unlink_client.merge_spool_extra.assert_called_once_with(42, {"tag": _json.dumps("")})

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_unlink_preserves_other_extra_keys(
        self,
        async_client: AsyncClient,
        spoolman_settings,
        mock_unlink_client,
    ):
        """Unrelated extra keys must survive unlink.

        merge_spool_extra is responsible for the merge (read current → merge
        new fields → PATCH). The unlink endpoint only sends `{"tag": ...}`,
        so any other extra key on the spool is automatically preserved by
        merge_spool_extra's read-merge-write semantics.
        """
        resp = await async_client.post("/api/v1/spoolman/spools/42/unlink")
        assert resp.status_code == 200

        # The endpoint passes only the tag key — merge_spool_extra does the
        # rest. We don't assert anything about `custom` on the call args
        # because the route doesn't see / pass it.
        _, args, _ = mock_unlink_client.merge_spool_extra.mock_calls[0]
        sent_fields = args[1] if len(args) >= 2 else {}
        assert sent_fields == {"tag": '""'}, "unlink should only send the tag key — merge_spool_extra does the merge"


# ---------------------------------------------------------------------------
# B1: GET /spoolman/inventory/filaments
# B2: POST /spools with spoolman_filament_id bypasses find_or_create_filament
# ---------------------------------------------------------------------------

SAMPLE_FILAMENT_DICT = {
    "id": 7,
    "name": "PLA Basic",
    "material": "PLA",
    "color_hex": "FF0000",
    "color_name": "Red",
    "weight": 1000,
    "spool_weight": 196,
    "vendor": {"id": 3, "name": "Bambu Lab"},
}


class TestListSpoolmanFilaments:
    """Tests for GET /api/v1/spoolman/inventory/filaments (B1)."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_filaments_disabled_returns_400(self, async_client: AsyncClient):
        """Without Spoolman enabled the endpoint returns 400."""
        resp = await async_client.get("/api/v1/spoolman/inventory/filaments")
        assert resp.status_code == 400

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_filaments_unreachable_returns_503(self, async_client: AsyncClient, spoolman_settings):
        """503 is returned when _get_client raises HTTPException(503)."""
        with patch(
            "backend.app.api.routes.spoolman_inventory._get_client",
            AsyncMock(side_effect=HTTPException(status_code=503, detail="Spoolman server is not reachable")),
        ):
            resp = await async_client.get("/api/v1/spoolman/inventory/filaments")
        assert resp.status_code == 503

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_list_filaments_success(self, async_client: AsyncClient, spoolman_settings):
        """Success path returns normalised filament list including spool_weight."""
        mock_client = MagicMock()
        mock_client.get_filaments = AsyncMock(return_value=[SAMPLE_FILAMENT_DICT])
        with patch(
            "backend.app.api.routes.spoolman_inventory._get_client",
            AsyncMock(return_value=mock_client),
        ):
            resp = await async_client.get("/api/v1/spoolman/inventory/filaments")

        assert resp.status_code == 200
        data = resp.json()
        assert isinstance(data, list)
        assert len(data) == 1
        entry = data[0]
        assert entry["id"] == 7
        assert entry["material"] == "PLA"
        assert entry["spool_weight"] == 196
        assert entry["vendor"]["name"] == "Bambu Lab"


class TestCreateSpoolWithFilamentId:
    """Tests for POST /api/v1/spoolman/inventory/spools with spoolman_filament_id (B2)."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_with_filament_id_skips_find_or_create(self, async_client: AsyncClient, spoolman_settings):
        """When spoolman_filament_id is provided, find_or_create_filament must NOT be called."""
        mock_client = MagicMock()
        mock_client.find_or_create_filament = AsyncMock(return_value=7)
        mock_client.create_spool = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
        mock_client.update_spool_full = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
        with patch(
            "backend.app.api.routes.spoolman_inventory._get_client",
            AsyncMock(return_value=mock_client),
        ):
            resp = await async_client.post(
                "/api/v1/spoolman/inventory/spools",
                json={"spoolman_filament_id": 7},
            )

        assert resp.status_code == 200
        mock_client.find_or_create_filament.assert_not_called()
        mock_client.create_spool.assert_called_once()
        _, kwargs = mock_client.create_spool.call_args
        assert kwargs.get("filament_id") == 7

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_with_invalid_filament_id_returns_404(self, async_client: AsyncClient, spoolman_settings):
        """An invalid spoolman_filament_id (not in Spoolman) must return 404."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_client = MagicMock()
        mock_client.create_spool = AsyncMock(side_effect=SpoolmanNotFoundError("filament not found"))
        with patch(
            "backend.app.api.routes.spoolman_inventory._get_client",
            AsyncMock(return_value=mock_client),
        ):
            resp = await async_client.post(
                "/api/v1/spoolman/inventory/spools",
                json={"spoolman_filament_id": 9999},
            )

        assert resp.status_code == 404
        assert "9999" in resp.json()["detail"]


# ---------------------------------------------------------------------------
# WICHTIG-12: Additional edge-case tests
# ---------------------------------------------------------------------------


class TestBulkCreateWithFilamentId:
    """Bulk create with spoolman_filament_id skips find_or_create_filament."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_create_with_filament_id_skips_find_or_create(
        self, async_client: AsyncClient, spoolman_settings
    ):
        """Bulk POST with spoolman_filament_id must NOT call find_or_create_filament."""
        mock_client = MagicMock()
        mock_client.find_or_create_filament = AsyncMock(return_value=7)
        mock_client.create_spool = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
        mock_client.update_spool_full = AsyncMock(return_value=SAMPLE_SPOOLMAN_SPOOL)
        with patch(
            "backend.app.api.routes.spoolman_inventory._get_client",
            AsyncMock(return_value=mock_client),
        ):
            resp = await async_client.post(
                "/api/v1/spoolman/inventory/spools/bulk",
                json={"spool": {"spoolman_filament_id": 7}, "quantity": 2},
            )

        assert resp.status_code == 200
        mock_client.find_or_create_filament.assert_not_called()
        assert mock_client.create_spool.call_count == 2
        for call in mock_client.create_spool.call_args_list:
            _, kwargs = call
            assert kwargs.get("filament_id") == 7


class TestCreateSpoolValidation:
    """Validation edge cases for SpoolmanInventoryCreate."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool_filament_id_zero_returns_422(self, async_client: AsyncClient, spoolman_settings):
        """spoolman_filament_id=0 must fail Field(gt=0) validation → 422."""
        resp = await async_client.post(
            "/api/v1/spoolman/inventory/spools",
            json={"spoolman_filament_id": 0},
        )
        assert resp.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool_without_material_or_filament_id_returns_422(
        self, async_client: AsyncClient, spoolman_settings
    ):
        """Neither material nor spoolman_filament_id → model_validator must reject → 422."""
        resp = await async_client.post(
            "/api/v1/spoolman/inventory/spools",
            json={"label_weight": 1000},
        )
        assert resp.status_code == 422


class TestNormalizeFilament:
    """Unit-style tests for _normalize_filament helper (imported directly)."""

    def test_normalize_filament_null_vendor(self):
        from backend.app.api.routes.spoolman_inventory import _normalize_filament

        result = _normalize_filament({"id": 5, "name": "PLA", "vendor": None})
        assert result is not None
        assert result["vendor"] is None

    def test_normalize_filament_null_id_returns_none(self):
        from backend.app.api.routes.spoolman_inventory import _normalize_filament

        result = _normalize_filament({"id": None, "name": "PLA"})
        assert result is None

    def test_normalize_filament_zero_id_returns_none(self):
        from backend.app.api.routes.spoolman_inventory import _normalize_filament

        result = _normalize_filament({"id": 0, "name": "PLA"})
        assert result is None


# ---------------------------------------------------------------------------
# F1: TestTranslateSpoolmanErrors — 502/404/503 paths through _translate_spoolman_errors
# ---------------------------------------------------------------------------


class TestTranslateSpoolmanErrors:
    """F1: _translate_spoolman_errors() maps Spoolman exceptions to HTTP codes."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_spoolman_not_found_returns_404(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """SpoolmanNotFoundError from get_spool → 404."""
        from backend.app.services.spoolman import SpoolmanNotFoundError

        mock_spoolman_client.get_spool.side_effect = SpoolmanNotFoundError("spool 999 not found")
        resp = await async_client.get("/api/v1/spoolman/inventory/spools/999")
        assert resp.status_code == 404

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_spoolman_unavailable_returns_503(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """SpoolmanUnavailableError from get_spool → 503."""
        from backend.app.services.spoolman import SpoolmanUnavailableError

        mock_spoolman_client.get_spool.side_effect = SpoolmanUnavailableError("network error")
        resp = await async_client.get("/api/v1/spoolman/inventory/spools/42")
        assert resp.status_code == 503

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_spoolman_client_error_returns_502_with_upstream_status(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """SpoolmanClientError from get_spool → 502 with upstream_status in body."""
        from backend.app.services.spoolman import SpoolmanClientError

        mock_spoolman_client.get_spool.side_effect = SpoolmanClientError("Spoolman rejected", 422, "filament not found")
        resp = await async_client.get("/api/v1/spoolman/inventory/spools/42")
        assert resp.status_code == 502
        body = resp.json()
        assert body["detail"]["upstream_status"] == 422
        assert body["detail"]["upstream_body"] == "filament not found"


# ---------------------------------------------------------------------------
# F2: _get_client health_check returns False → 503
# ---------------------------------------------------------------------------


class TestGetClientHealthCheckFalse:
    """F2: _get_client raises 503 when health_check() returns False."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_returns_503_when_health_check_returns_false(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """health_check() → False should produce 503 on any inventory call."""
        import time

        import backend.app.api.routes.spoolman_inventory as inv_module

        mock_spoolman_client.health_check = AsyncMock(return_value=False)
        # Clear the TTL cache so health_check is actually called
        inv_module._health_check_cache.clear()
        resp = await async_client.get("/api/v1/spoolman/inventory/spools")
        assert resp.status_code == 503


# ---------------------------------------------------------------------------
# F3: SpoolTagLinkRequest both fields null → 422
# ---------------------------------------------------------------------------


class TestSpoolTagLinkBothNull:
    """F3: /spools/{id}/tag with both tag_uid and tray_uuid null → 422."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_both_null_returns_422(self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client):
        """Sending {} (both fields absent) → at_least_one validator → 422."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={},
        )
        assert resp.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_both_explicitly_null_returns_422(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """Sending {tag_uid: null, tray_uuid: null} → at_least_one validator → 422."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42/tag",
            json={"tag_uid": None, "tray_uuid": None},
        )
        assert resp.status_code == 422


# ---------------------------------------------------------------------------
# F5: RBAC lists — missing endpoints
# ---------------------------------------------------------------------------


class TestSpoolmanInventoryAuthExtended:
    """F5: Additional endpoints in RBAC auth/403 parametrize lists."""

    @pytest.fixture
    async def auth_and_spoolman_settings(self, db_session):
        from backend.app.models.settings import Settings

        db_session.add(Settings(key="spoolman_enabled", value="true"))
        db_session.add(Settings(key="spoolman_url", value="http://localhost:7912"))
        db_session.add(Settings(key="auth_enabled", value="true"))
        await db_session.commit()

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "method,path,payload",
        [
            ("PATCH", "/api/v1/spoolman/inventory/spools/42/tag", {"tag_uid": "AABBCCDDEE112233"}),
            ("POST", "/api/v1/spoolman/inventory/sync-ams-weights", {"printer_id": 1, "ams_data": []}),
            ("PATCH", "/api/v1/spoolman/inventory/filaments/7", {"spool_weight": 196.0}),
        ],
    )
    async def test_extended_write_endpoints_require_auth(
        self,
        async_client: AsyncClient,
        auth_and_spoolman_settings,
        method: str,
        path: str,
        payload: dict | None,
    ):
        """Additional write endpoints return 401 when auth is enabled and no token is provided."""
        resp = await async_client.request(method, path, json=payload)
        assert resp.status_code == 401, f"{method} {path} should require auth but got {resp.status_code}: {resp.json()}"

    @pytest.mark.asyncio
    @pytest.mark.integration
    @pytest.mark.parametrize(
        "method,path",
        [
            ("GET", "/api/v1/spoolman/inventory/filaments"),
        ],
    )
    async def test_extended_read_endpoints_require_auth(
        self,
        async_client: AsyncClient,
        auth_and_spoolman_settings,
        method: str,
        path: str,
    ):
        """Additional read endpoints return 401 when auth is enabled and no token is provided."""
        resp = await async_client.request(method, path)
        assert resp.status_code == 401, f"{method} {path} should require auth but got {resp.status_code}: {resp.json()}"


# ---------------------------------------------------------------------------
# F8: _normalize_filament negative ID returns None
# ---------------------------------------------------------------------------


class TestNormalizeFilamentNegativeId:
    """F8: _normalize_filament with negative id → None (was only checking == 0)."""

    def test_normalize_filament_negative_id_returns_none(self):
        from backend.app.api.routes.spoolman_inventory import _normalize_filament

        result = _normalize_filament({"id": -1, "name": "PLA"})
        assert result is None

    def test_normalize_filament_large_negative_id_returns_none(self):
        from backend.app.api.routes.spoolman_inventory import _normalize_filament

        result = _normalize_filament({"id": -999, "name": "PLA"})
        assert result is None


# ---------------------------------------------------------------------------
# F9: weight_used > label_weight cross-field validator integration test
# ---------------------------------------------------------------------------


class TestCreateSpoolWeightValidation:
    """F9: SpoolmanInventoryCreate.validate_weight_consistency cross-field validator."""

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_weight_used_exceeds_label_weight_returns_422(self, async_client: AsyncClient, spoolman_settings):
        """weight_used > label_weight → cross-field validator → 422."""
        resp = await async_client.post(
            "/api/v1/spoolman/inventory/spools",
            json={"material": "PLA", "label_weight": 500, "weight_used": 600},
        )
        assert resp.status_code == 422

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_weight_used_equals_label_weight_accepted(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """weight_used == label_weight is exactly at the boundary → should pass (201)."""
        resp = await async_client.post(
            "/api/v1/spoolman/inventory/spools",
            json={"material": "PLA", "label_weight": 1000, "weight_used": 1000},
        )
        # 201 or 200 (spool created)
        assert resp.status_code in (200, 201)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_create_spool_with_non_default_core_weight_accepted(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """A3: core_weight != 250 is accepted and reaches Spoolman → 201."""
        resp = await async_client.post(
            "/api/v1/spoolman/inventory/spools",
            json={"material": "PLA", "label_weight": 1000, "weight_used": 0, "core_weight": 196},
        )
        assert resp.status_code in (200, 201)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_update_spool_with_non_default_core_weight_accepted(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """A3: PATCH with core_weight != 250 must no longer return 422."""
        resp = await async_client.patch(
            "/api/v1/spoolman/inventory/spools/42",
            json={"core_weight": 300},
        )
        assert resp.status_code == 200


# ---------------------------------------------------------------------------
# P8-T1: /slot-assignments/all enriches with printer_name + ams_label
# ---------------------------------------------------------------------------


class TestGetAllSlotAssignmentsEnriched:
    """P8-T1: /slot-assignments/all enriches with printer_name + ams_label.

    Regression for InventoryPage LOCATION column showing '-' for Spoolman
    spools because the endpoint only returned 4 raw fields without the
    printer_name + ams_label needed by the UI.
    """

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_returns_printer_name_for_existing_printer(
        self, async_client: AsyncClient, db_session, spoolman_settings
    ):
        """printer_name is enriched from the joined Printer relationship."""
        from backend.app.models.printer import Printer
        from backend.app.models.spoolman_slot_assignment import SpoolmanSlotAssignment

        db_session.add(
            Printer(
                id=1,
                name="Sully",
                model="X1C",
                serial_number="SN1",
                ip_address="1.2.3.4",
                access_code="",
            )
        )
        db_session.add(
            SpoolmanSlotAssignment(
                printer_id=1,
                ams_id=0,
                tray_id=2,
                spoolman_spool_id=216,
            )
        )
        await db_session.commit()

        with patch("backend.app.api.routes.spoolman_inventory.printer_manager") as mock_pm:
            mock_pm.get_all_statuses.return_value = {}
            resp = await async_client.get("/api/v1/spoolman/inventory/slot-assignments/all")

        assert resp.status_code == 200
        data = resp.json()
        assert len(data) == 1
        assert data[0]["printer_name"] == "Sully"
        assert data[0]["spoolman_spool_id"] == 216
        assert data[0]["ams_id"] == 0
        assert data[0]["tray_id"] == 2
        assert data[0]["ams_label"] is None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_returns_ams_label_when_label_configured(
        self, async_client: AsyncClient, db_session, spoolman_settings
    ):
        """ams_label is enriched from AmsLabel via printer MQTT serial map."""
        from backend.app.models.ams_label import AmsLabel
        from backend.app.models.printer import Printer
        from backend.app.models.spoolman_slot_assignment import SpoolmanSlotAssignment

        db_session.add(
            Printer(
                id=1,
                name="Sully",
                model="X1C",
                serial_number="SN1",
                ip_address="1.2.3.4",
                access_code="",
            )
        )
        db_session.add(AmsLabel(ams_serial_number="ABC123", label="Top Shelf"))
        db_session.add(
            SpoolmanSlotAssignment(
                printer_id=1,
                ams_id=0,
                tray_id=2,
                spoolman_spool_id=216,
            )
        )
        await db_session.commit()

        mock_state = MagicMock(raw_data={"ams": [{"id": 0, "sn": "ABC123"}]})
        with patch("backend.app.api.routes.spoolman_inventory.printer_manager") as mock_pm:
            mock_pm.get_all_statuses.return_value = {1: mock_state}
            resp = await async_client.get("/api/v1/spoolman/inventory/slot-assignments/all")

        assert resp.status_code == 200
        assert resp.json()[0]["ams_label"] == "Top Shelf"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_synthetic_ams_label_fallback(self, async_client: AsyncClient, db_session, spoolman_settings):
        """Falls back to synthetic 'p{pid}a{ams_id}' key when no MQTT serial available."""
        from backend.app.models.ams_label import AmsLabel
        from backend.app.models.printer import Printer
        from backend.app.models.spoolman_slot_assignment import SpoolmanSlotAssignment

        db_session.add(
            Printer(
                id=1,
                name="Sully",
                model="X1C",
                serial_number="SN1",
                ip_address="1.2.3.4",
                access_code="",
            )
        )
        db_session.add(AmsLabel(ams_serial_number="p1a0", label="Synthetic Label"))
        db_session.add(
            SpoolmanSlotAssignment(
                printer_id=1,
                ams_id=0,
                tray_id=2,
                spoolman_spool_id=216,
            )
        )
        await db_session.commit()

        with patch("backend.app.api.routes.spoolman_inventory.printer_manager") as mock_pm:
            mock_pm.get_all_statuses.return_value = {}  # No live state -> synthetic key
            resp = await async_client.get("/api/v1/spoolman/inventory/slot-assignments/all")

        assert resp.json()[0]["ams_label"] == "Synthetic Label"

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_filter_by_printer_id_still_works(self, async_client: AsyncClient, db_session, spoolman_settings):
        """Regression: ?printer_id=N still filters and enriches."""
        from backend.app.models.printer import Printer
        from backend.app.models.spoolman_slot_assignment import SpoolmanSlotAssignment

        for pid in (1, 2):
            db_session.add(
                Printer(
                    id=pid,
                    name=f"P{pid}",
                    model="X1C",
                    serial_number=f"SN{pid}",
                    ip_address=f"1.2.3.{pid}",
                    access_code="",
                )
            )
            db_session.add(
                SpoolmanSlotAssignment(
                    printer_id=pid,
                    ams_id=0,
                    tray_id=0,
                    spoolman_spool_id=200 + pid,
                )
            )
        await db_session.commit()

        with patch("backend.app.api.routes.spoolman_inventory.printer_manager") as mock_pm:
            mock_pm.get_all_statuses.return_value = {}
            resp = await async_client.get("/api/v1/spoolman/inventory/slot-assignments/all?printer_id=1")

        data = resp.json()
        assert len(data) == 1
        assert data[0]["printer_id"] == 1
        assert data[0]["printer_name"] == "P1"
        assert data[0]["spoolman_spool_id"] == 201


class TestPerSpoolCoreWeight:
    """The per-spool tare reaches Spoolman now (#2908).

    `core_weight` was declared on both write schemas and dropped after
    validation, with a comment saying so. The read path never showed it: it
    derives the value from ``spool.spool_weight ?? filament.spool_weight ?? 250``
    (_spoolman_helpers.py), so an edit that went nowhere came back as the
    inherited value and looked like it had simply not changed.

    It is not cosmetic, because the same resolution is the tare the weigh
    endpoint subtracts. A spool whose real empty weight differs from its
    filament's produced a wrong remaining weight on every weigh-in -- 70 g for
    the reporter's third-party spools against Bambu's 250 g reusable ones.

    Spoolman already has the field and already gives it priority. Only the
    write was missing.
    """

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_an_edited_tare_is_written_to_the_spools_own_field(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json={"core_weight": 180})

        assert response.status_code == 200
        assert mock_spoolman_client.update_spool_full.call_args.kwargs["spool_weight"] == 180

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_an_edit_that_does_not_mention_the_tare_leaves_it_inheriting(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """The reason this keys off model_fields_set rather than the value.

        `core_weight` carries a default, so a PATCH that never mentions it still
        arrives at the handler holding one. Writing that would stamp an explicit
        tare on every spool the user edits for any reason, silently detaching it
        from its filament -- a worse bug than the one being fixed, and an
        invisible one, since the number displayed would not change.
        """
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json={"note": "just a note"})

        assert response.status_code == 200
        assert mock_spoolman_client.update_spool_full.call_args.kwargs["spool_weight"] is None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_a_tare_given_at_creation_is_written(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        response = await async_client.post(
            "/api/v1/spoolman/inventory/spools",
            json={"material": "PLA", "label_weight": 1000, "core_weight": 180},
        )

        assert response.status_code == 200
        assert mock_spoolman_client.create_spool.call_args.kwargs["spool_weight"] == 180

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_a_creation_that_omits_the_tare_leaves_the_spool_inheriting(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """Same defaulting hazard as the update, and the commoner path: the
        form posts without a tare far more often than with one."""
        response = await async_client.post(
            "/api/v1/spoolman/inventory/spools",
            json={"material": "PLA", "label_weight": 1000},
        )

        assert response.status_code == 200
        assert mock_spoolman_client.create_spool.call_args.kwargs["spool_weight"] is None

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_bulk_creation_persists_the_tare_on_every_spool(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """Bulk create takes the same schema, so it dropped the field the same way."""
        response = await async_client.post(
            "/api/v1/spoolman/inventory/spools/bulk",
            json={"spool": {"material": "PLA", "label_weight": 1000, "core_weight": 180}, "quantity": 3},
        )

        assert response.status_code in (200, 201)
        assert mock_spoolman_client.create_spool.await_count == 3
        assert all(c.kwargs["spool_weight"] == 180 for c in mock_spoolman_client.create_spool.await_args_list)

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_a_zero_tare_is_a_value_not_an_absence(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """0 g is a real answer -- a coil with no spool -- and the schema allows
        it (``ge=0``). Guarding the write on truthiness rather than ``is not
        None`` would silently turn it into "inherit", which resolves to 250."""
        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42", json={"core_weight": 0})

        assert response.status_code == 200
        assert mock_spoolman_client.update_spool_full.call_args.kwargs["spool_weight"] == 0

    @pytest.mark.asyncio
    @pytest.mark.integration
    async def test_the_written_tare_is_the_one_the_weigh_endpoint_subtracts(
        self, async_client: AsyncClient, spoolman_settings, mock_spoolman_client
    ):
        """What the fix is actually for.

        The weigh endpoint resolves the tare exactly as the read path does, so
        once the per-spool value is stored it is the number a measured gross
        weight is reduced by. With a 180 g spool inheriting the filament's 250 g
        this same weigh-in would have recorded 550 g remaining instead of 620 --
        the 70 g error from the report, on every weigh-in.
        """
        mock_spoolman_client.get_spool.return_value = {
            **SAMPLE_SPOOLMAN_SPOOL,
            "spool_weight": 180.0,
        }

        response = await async_client.patch("/api/v1/spoolman/inventory/spools/42/weight", json={"weight_grams": 800.0})

        assert response.status_code == 200
        assert mock_spoolman_client.update_spool_full.call_args.kwargs["remaining_weight"] == 620.0