from datetime import datetime, timedelta


def test_revalidator_promotes_legacy_same_product_without_refreshing_expired_price():
    from services.competitor_identity_revalidator import classify_legacy_competitor_row

    row = {
        "sku": "10950080",
        "momo_name": "【台酒生技】黑酵母酒粕逆齡活膚青春露5入-(120ml/入)",
        "momo_price": 999,
        "pchome_price": 899,
        "competitor_product_id": "PC-1",
        "competitor_product_name": "【台酒生技】金粹黑酵母酒粕逆齡活膚青春露120ml_5入",
        "tags": ["discount_10pct"],
        "is_expired": True,
        "expires_at": datetime.utcnow() - timedelta(hours=1),
    }

    decision = classify_legacy_competitor_row(row)

    assert decision.accepted is True
    assert decision.status == "expired_match"
    assert decision.score >= 0.76
    assert "identity_v2" in decision.tags
    assert "legacy_revalidated" in decision.tags


def test_revalidator_rejects_legacy_brand_conflict():
    from services.competitor_identity_revalidator import classify_legacy_competitor_row

    row = {
        "sku": "BAD-1",
        "momo_name": "【蘭蔻】官方直營 玫瑰霜60ml+玫瑰精露150ml",
        "momo_price": 18765,
        "pchome_price": 1249,
        "competitor_product_id": "PC-BAD",
        "competitor_product_name": "LOREAL Paris 巴黎萊雅 金致臻顏花蜜奢養膠原輕盈乳霜_60ml",
        "tags": [],
        "is_expired": False,
    }

    decision = classify_legacy_competitor_row(row)

    assert decision.accepted is False
    assert decision.status == "identity_veto"
    assert decision.hard_veto is True
    assert "brand_conflict" in decision.diagnostic


def test_dashboard_match_status_distinguishes_expired_and_legacy_rows():
    from routes.dashboard_routes import _build_pchome_match_status

    expired = _build_pchome_match_status(
        None,
        ineligible={"reason": "expired_match", "match_score": 0.91},
    )
    legacy = _build_pchome_match_status(
        None,
        ineligible={"reason": "legacy_without_identity_v2", "match_score": 0.82},
    )

    assert expired["label"] == "價格過期待刷新"
    assert expired["tone"] == "watch"
    assert legacy["label"] == "舊版配對待重驗"
    assert "identity_v2" in legacy["summary"]


def test_dashboard_match_status_explains_identity_veto_reason():
    from routes.dashboard_routes import _build_pchome_match_status

    bundle = _build_pchome_match_status({
        "attempt_status": "identity_veto",
        "best_match_score": 0.32,
        "error_message": "score=0.32; reasons=bundle_offer_conflict,product_line_conflict",
    })
    refill = _build_pchome_match_status({
        "attempt_status": "identity_veto",
        "best_match_score": 0.32,
        "error_message": "score=0.32; reasons=refill_pack_conflict",
    })

    assert bundle["label"] == "組合差異待審"
    assert "組合包/多件組" in bundle["summary"]
    assert refill["label"] == "補充包差異待審"
    assert "補充瓶/補充包" in refill["summary"]


def test_dashboard_match_status_explains_unit_comparable_bundle():
    from routes.dashboard_routes import _build_pchome_match_status

    status = _build_pchome_match_status({
        "attempt_status": "unit_comparable",
        "best_match_score": 0.74,
        "error_message": "score=0.74; reasons=bundle_offer_conflict,unit_comparable",
        "unit_comparison": {
            "comparable": True,
            "summary": "MOMO $14.99/ml vs PChome $16.98/ml (-11.7%)",
        },
    })

    assert status["label"] == "需單位價比較"
    assert status["tone"] == "watch"
    assert "已換算單位價" in status["summary"]