dpp-calc 0.8.0

EU-methodology compliance calculators (CO2e, repairability) for Odal Node — pure, stateless
Documentation 
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//! Washing machines / washer-dryers — stub; ESPR delegated act expected.
//!
//! EU 2021/341 includes repairability requirements for washing machines. An
//! ESPR-era repairability index delegated act is expected ~2026. Weights and
//! thresholds below are placeholder pending the official annex.

use chrono::NaiveDate;

use super::{RepairabilityRuleset, RepairabilityThresholds, RepairabilityWeights};
use crate::ruleset::{EffectiveDateBound, RegulatoryBasis, Ruleset, RulesetId, RulesetVersion};

pub struct WashingMachineRuleset;

static WASHING_WEIGHTS: RepairabilityWeights = RepairabilityWeights {
    disassembly: 0.25,
    spare_parts: 0.20,
    repair_info: 0.20,
    diagnostic_tools: 0.15,
    software_updatability: 0.10,
    customer_support: 0.10,
};

static WASHING_THRESHOLDS: RepairabilityThresholds = RepairabilityThresholds {
    a: 8.5,
    b: 7.0,
    c: 5.5,
    d: 4.0,
};

static WASHING_BASIS: RegulatoryBasis = RegulatoryBasis {
    regulation: "pending — ESPR washing machine repairability delegated act (expected ~2026)",
    article: "TBD",
    standard: Some("EN 45554:2021"),
    technical_study: None,
    source_url: None,
    superseded_by: None,
};

static WASHING_RULESET_ID: std::sync::OnceLock<RulesetId> = std::sync::OnceLock::new();
static WASHING_RULESET_VERSION: std::sync::OnceLock<RulesetVersion> = std::sync::OnceLock::new();
static WASHING_EFFECTIVE_DATES: std::sync::OnceLock<EffectiveDateBound> =
    std::sync::OnceLock::new();

impl Ruleset for WashingMachineRuleset {
    fn id(&self) -> &RulesetId {
        WASHING_RULESET_ID.get_or_init(|| RulesetId("washing-machine-repairability".into()))
    }

    fn version(&self) -> &RulesetVersion {
        WASHING_RULESET_VERSION.get_or_init(|| RulesetVersion("0.0.0-stub".into()))
    }

    fn effective_dates(&self) -> &EffectiveDateBound {
        WASHING_EFFECTIVE_DATES.get_or_init(|| {
            EffectiveDateBound::open(NaiveDate::from_ymd_opt(2100, 1, 1).expect("valid date"))
        })
    }

    fn regulatory_basis(&self) -> &RegulatoryBasis {
        &WASHING_BASIS
    }
}

impl RepairabilityRuleset for WashingMachineRuleset {
    fn weights(&self) -> &RepairabilityWeights {
        &WASHING_WEIGHTS
    }

    fn thresholds(&self) -> &RepairabilityThresholds {
        &WASHING_THRESHOLDS
    }
}