"""The sense-check table the DB-less harness prints for a Plan."""

from __future__ import annotations

from domain.modelling.plan import Plan, PlanMeasure
from domain.modelling.recommendation import Cost
from domain.modelling.scoring.package_scorer import Score
from domain.modelling.scoring.scoring import MeasureImpact
from harness.plan_table import format_plan_table


def _plan() -> Plan:
    baseline = Score(
        sap_continuous=57.4, co2_kg_per_yr=3000.0, primary_energy_kwh_per_yr=300.0
    )
    post = Score(
        sap_continuous=61.2, co2_kg_per_yr=2100.0, primary_energy_kwh_per_yr=240.0
    )
    measures = (
        PlanMeasure(
            measure_type="cavity_wall_insulation",
            description="Cavity wall insulation",
            cost=Cost(total=500.0, contingency_rate=0.1),
            impact=MeasureImpact(
                sap_points=3.1,
                co2_savings_kg_per_yr=600.0,
                energy_savings_kwh_per_yr=1200.0,
            ),
            kwh_savings=900.0,
            energy_cost_savings=120.0,
        ),
        PlanMeasure(
            measure_type="mechanical_ventilation",
            description="Mechanical extract ventilation",
            cost=Cost(total=900.0, contingency_rate=0.26),
            impact=MeasureImpact(
                sap_points=-1.3,
                co2_savings_kg_per_yr=-50.0,
                energy_savings_kwh_per_yr=-200.0,
            ),
            kwh_savings=-150.0,
            energy_cost_savings=-30.0,
        ),
    )
    return Plan(measures=measures, baseline=baseline, post_retrofit=post)


def test_table_shows_valuation_uplift_with_pounds() -> None:
    # Arrange — a £200k property modelled D (57.4) -> C (72.0).
    baseline = Score(
        sap_continuous=57.4, co2_kg_per_yr=3000.0, primary_energy_kwh_per_yr=300.0
    )
    post = Score(
        sap_continuous=72.0, co2_kg_per_yr=2100.0, primary_energy_kwh_per_yr=240.0
    )
    plan = Plan(
        measures=(),
        baseline=baseline,
        post_retrofit=post,
        current_market_value=200_000.0,
    )

    # Act
    table: str = format_plan_table(plan)

    # Assert — the valuation line shows the average % uplift and its £ forms.
    assert "valuation uplift" in table
    assert "+2.5%" in table
    assert "£5,000" in table
    assert "£205,000" in table


def test_table_shows_package_transition_and_each_measure() -> None:
    # Arrange
    plan: Plan = _plan()

    # Act
    table: str = format_plan_table(plan)

    # Assert — the package SAP transition (both bands resolve to D), and each
    # measure's signed SAP contribution against its type.
    assert "57.4" in table
    assert "61.2" in table
    assert "(D)" in table
    assert "cavity_wall_insulation" in table
    assert "+3.1" in table
    assert "mechanical_ventilation" in table
    assert "-1.3" in table
    # The package cost of works (500 + 900) appears.
    assert "1,400" in table