"""感慨触发纯函数测试（辰正 §7.2）。"""

from app.modules.time_sense.sentiment import SentimentInput, detect_sentiment
from app.modules.time_sense.snapshot import TemporalSnapshot


def _snapshot(**overrides) -> TemporalSnapshot:
    """复用 modulation 测试的快照构造思路：构造最小可用 snapshot。"""
    from tests.modules.time_sense.test_modulation import _snapshot as _base_snapshot

    return _base_snapshot(**overrides)


def test_duration_node_trigger():
    snap = _snapshot()
    signals = SentimentInput(duration_days=100, duration_nodes={100, 365})
    assert detect_sentiment(snap, signals) == "duration_node"


def test_anniversary_prewarm_trigger():
    snap = _snapshot()
    signals = SentimentInput(duration_days=50, next_milestone_days=5, prewarm_days=7)
    assert detect_sentiment(snap, signals) == "anniversary_prewarm"


def test_anniversary_prewarm_not_today():
    # next_milestone_days=0 表示今日命中（active_milestone），不算 prewarm
    snap = _snapshot()
    signals = SentimentInput(duration_days=50, next_milestone_days=0, prewarm_days=7)
    assert detect_sentiment(snap, signals) != "anniversary_prewarm"


def test_reunion_memory_trigger():
    snap = _snapshot()
    signals = SentimentInput(duration_days=10, is_reunion=True, has_reunion_memory=True)
    assert detect_sentiment(snap, signals) == "reunion_memory"


def test_late_night_overlay_trigger():
    snap = _snapshot(day_period="凌晨")
    signals = SentimentInput(duration_days=10, is_reunion=True)
    assert detect_sentiment(snap, signals) == "late_night_overlay"


def test_solar_term_trigger():
    from app.modules.time_sense.lunar import SolarTermInfo

    snap = _snapshot(
        solar_term=SolarTermInfo(current_name="立春", next_name="雨水", days_to_next=15)
    )
    signals = SentimentInput(duration_days=10, strong_solar_terms={"立春"})
    assert detect_sentiment(snap, signals) == "solar_term"


def test_no_trigger_returns_none():
    snap = _snapshot()
    signals = SentimentInput(duration_days=10)
    assert detect_sentiment(snap, signals) is None


def test_priority_duration_over_prewarm():
    """认识 100 天且距周年 3 天 → duration_node 优先。"""
    snap = _snapshot()
    signals = SentimentInput(
        duration_days=100,
        next_milestone_days=3,
        duration_nodes={100},
        prewarm_days=7,
    )
    assert detect_sentiment(snap, signals) == "duration_node"