"""`Property.physical_state_changed` — the Rebaselining trigger (b)/(c) signal.

True when the Effective EPC was assembled from something other than a pristine
lodged cert: Landlord Overrides folded on, Site Notes superseding the cert, or an
EPC-Prediction synthesis. The PropertyBaselineOrchestrator threads it into the
Rebaseliner so an overridden / predicted SAP >= 10.2 picture rebaselines off the
calculator instead of echoing the (now-stale) accredited lodged figure.
"""

from __future__ import annotations

import json
from pathlib import Path
from typing import Any

from datatypes.epc.domain.epc_property_data import EpcPropertyData
from datatypes.epc.domain.mapper import EpcPropertyDataMapper
from domain.epc.property_overlays.wall_type_overlay import wall_overlay_for
from domain.property.property import Property, PropertyIdentity

_JSON_SAMPLES = Path(__file__).resolve().parents[3] / "backend/epc_api/json_samples"


def _epc() -> EpcPropertyData:
    raw: dict[str, Any] = json.loads(
        (_JSON_SAMPLES / "RdSAP-Schema-21.0.0" / "epc.json").read_text()
    )
    return EpcPropertyDataMapper.from_api_response(raw)


def _identity() -> PropertyIdentity:
    return PropertyIdentity(
        portfolio_id=1, postcode="A0 0AA", address="1 Some Street", uprn=12345
    )


def test_pristine_lodged_cert_with_no_overrides_is_unchanged() -> None:
    prop = Property(identity=_identity(), epc=_epc())
    assert prop.physical_state_changed is False


def test_lodged_cert_with_landlord_overrides_is_changed() -> None:
    overlay = wall_overlay_for("Solid brick, with internal insulation", 0)
    assert overlay is not None
    prop = Property(identity=_identity(), epc=_epc(), landlord_overrides=[overlay])
    assert prop.physical_state_changed is True


def test_predicted_property_is_changed() -> None:
    # A neighbour-synthesised picture is assembled, not a real lodged cert, so it
    # rebaselines off the calculator (trigger (c)).
    prop = Property(identity=_identity(), epc=None, predicted_epc=_epc())
    assert prop.physical_state_changed is True