"""#697 — AggregatedEstimate.insufficient_data computed flag.

median=0 (нет комплов/якоря) → insufficient_data=True, чтобы фронт показал
«недостаточно данных», а не «0 ₽». Производное от median_price_rub.
"""

import os
from datetime import UTC, datetime
from uuid import uuid4

os.environ.setdefault("DATABASE_URL", "postgresql+psycopg://test:test@localhost/test_db")

from app.schemas.trade_in import AggregatedEstimate


def _estimate(median: int) -> AggregatedEstimate:
    return AggregatedEstimate(
        estimate_id=uuid4(),
        median_price_rub=median,
        range_low_rub=0 if median == 0 else median - 100,
        range_high_rub=0 if median == 0 else median + 100,
        median_price_per_m2=0 if median == 0 else 150_000,
        confidence="low" if median == 0 else "medium",
        n_analogs=0 if median == 0 else 12,
        period_months=12,
        analogs=[],
        actual_deals=[],
        expires_at=datetime(2026, 6, 1, tzinfo=UTC),
    )


def test_insufficient_when_median_zero() -> None:
    assert _estimate(0).insufficient_data is True


def test_sufficient_when_median_positive() -> None:
    assert _estimate(6_900_000).insufficient_data is False


def test_flag_serialized_in_model_dump() -> None:
    dump = _estimate(0).model_dump()
    assert dump["insufficient_data"] is True
    dump2 = _estimate(5_000_000).model_dump()
    assert dump2["insufficient_data"] is False


def test_negative_median_is_insufficient() -> None:
    # защита от случайного отрицательного headline.
    assert _estimate(-1).insufficient_data is True