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Slice 2 of #1157. The per-Property output of one Scenario's modelling run, per ADR-0017. - PlanMeasure: a selected Measure Option frozen with its installed Cost and role-3 (final-package cascade) attributed MeasureImpact — the output counterpart of a Recommendation's candidate Option. - Plan: the selected Plan Measures + baseline/post-retrofit Scores. Single-phase (ADR-0005); derives the persisted headline figures — cost_of_works, contingency_cost, co2_savings_kg_per_yr (kg; the mapper converts to tonnes), post_sap_continuous, and post_epc_rating (band from the rounded SAP via Epc.from_sap_score). 1 unit test, pyright strict clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
"""Plan and Plan Measure — the Modelling stage's persisted output (ADR-0017).
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A **Plan** is the per-Property output of one Scenario's modelling run: the
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selected **Optimised Package** (its **Plan Measures**) plus the Property's
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post-retrofit figures. It is single-phase — multi-phase is deferred
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(ADR-0005) — so the headline figures are flat on the Plan.
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A **Plan Measure** is the *output* counterpart of a Recommendation's candidate
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Option: the one Option the Optimiser kept, frozen with its installed **Cost**
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and its final-package (role-3) attributed **impact**. See CONTEXT.md.
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"""
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from dataclasses import dataclass
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from datatypes.epc.domain.epc import Epc
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from domain.modelling.package_scorer import Score
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from domain.modelling.recommendation import Cost
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from domain.modelling.scoring import MeasureImpact
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@dataclass(frozen=True)
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class PlanMeasure:
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"""One selected Measure Option as it lands in a Plan: the measure, its
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installed Cost, and its role-3 (final-package cascade) attributed impact."""
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measure_type: str
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description: str
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cost: Cost
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impact: MeasureImpact
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@dataclass(frozen=True)
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class Plan:
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"""A Property's Plan for one Scenario: the selected Plan Measures and the
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baseline / post-retrofit whole-package Scores. The persisted headline
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figures are derived from these (cost aggregates, CO₂ saving, post band)."""
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measures: tuple[PlanMeasure, ...]
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baseline: Score
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post_retrofit: Score
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@property
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def cost_of_works(self) -> float:
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"""Sum of the Plan Measures' fully-loaded Costs."""
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return sum((measure.cost.total for measure in self.measures), 0.0)
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@property
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def contingency_cost(self) -> float:
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"""Sum of each Plan Measure's contingency (its Cost total × its
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per-Measure-Type contingency rate)."""
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return sum(
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(
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measure.cost.total * measure.cost.contingency_rate
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for measure in self.measures
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),
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0.0,
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)
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@property
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def post_sap_continuous(self) -> float:
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"""The whole-package re-score's un-rounded SAP rating."""
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return self.post_retrofit.sap_continuous
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@property
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def post_epc_rating(self) -> Epc:
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"""The post-retrofit EPC band, from the rounded SAP rating."""
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return Epc.from_sap_score(round(self.post_retrofit.sap_continuous))
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@property
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def co2_savings_kg_per_yr(self) -> float:
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"""Whole-package CO₂ reduction (kg/yr) vs the baseline re-score. The
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persistence mapper converts to tonnes for the live column contract."""
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return self.baseline.co2_kg_per_yr - self.post_retrofit.co2_kg_per_yr
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