import json
from datetime import date, timedelta
from app.db import _conn


def _seed_announcement(house_nm, status, winner_date=None, hmno="HM1", pno="P1"):
    with _conn() as conn:
        conn.execute("""
            INSERT INTO announcements (house_manage_no, pblanc_no, house_nm, status, winner_date, source)
            VALUES (?, ?, ?, ?, ?, 'manual')
        """, (hmno, pno, house_nm, status, winner_date))
        return conn.execute("SELECT id FROM announcements WHERE house_manage_no=?", (hmno,)).fetchone()["id"]


def test_delete_old_completed_removes_expired():
    from app.db import delete_old_completed_announcements
    old = (date.today() - timedelta(days=100)).isoformat()
    _seed_announcement("OldA", "완료", old, hmno="OLD", pno="1")
    deleted = delete_old_completed_announcements(grace_days=90)
    assert deleted == 1


def test_delete_old_completed_keeps_recent():
    from app.db import delete_old_completed_announcements
    recent = (date.today() - timedelta(days=30)).isoformat()
    _seed_announcement("RecentA", "완료", recent, hmno="REC", pno="1")
    deleted = delete_old_completed_announcements(grace_days=90)
    assert deleted == 0


def test_delete_old_completed_keeps_active():
    from app.db import delete_old_completed_announcements
    old = (date.today() - timedelta(days=200)).isoformat()
    _seed_announcement("ActiveA", "청약중", old, hmno="ACT", pno="1")
    deleted = delete_old_completed_announcements(grace_days=90)
    assert deleted == 0


def test_delete_old_completed_keeps_null_winner_date():
    from app.db import delete_old_completed_announcements
    _seed_announcement("NullA", "완료", None, hmno="NULL", pno="1")
    deleted = delete_old_completed_announcements(grace_days=90)
    assert deleted == 0  # winner_date NULL은 안전 보존


def test_get_unnotified_matches_filters_by_score_and_null():
    from app.db import get_unnotified_matches
    aid = _seed_announcement("MatchA", "청약중", hmno="MA", pno="1")
    with _conn() as conn:
        # 임계값 미만
        conn.execute("""
            INSERT INTO match_results (announcement_id, model_id, match_score, match_reasons, eligible_types, is_new)
            VALUES (?, NULL, 50, '[]', '[]', 1)
        """, (aid,))
        # 임계값 통과 — 미알림
        conn.execute("""
            INSERT INTO match_results (announcement_id, model_id, match_score, match_reasons, eligible_types, is_new)
            VALUES (?, 1, 80, '[]', '[]', 1)
        """, (aid,))
        # 임계값 통과 — 이미 알림됨
        conn.execute("""
            INSERT INTO match_results (announcement_id, model_id, match_score, match_reasons, eligible_types, is_new, notified_at)
            VALUES (?, 2, 90, '[]', '[]', 1, '2026-04-01T00:00:00.000Z')
        """, (aid,))

    matches = get_unnotified_matches(min_score=70)
    assert len(matches) == 1
    assert matches[0]["match_score"] == 80
    assert matches[0]["house_nm"] == "MatchA"


def test_mark_matches_notified_sets_timestamp():
    from app.db import mark_matches_notified
    aid = _seed_announcement("NotifyA", "청약중", hmno="NT", pno="1")
    with _conn() as conn:
        cur = conn.execute("""
            INSERT INTO match_results (announcement_id, model_id, match_score, match_reasons, eligible_types, is_new)
            VALUES (?, NULL, 80, '[]', '[]', 1)
        """, (aid,))
        match_id = cur.lastrowid

    mark_matches_notified([match_id])

    with _conn() as conn:
        row = conn.execute("SELECT notified_at FROM match_results WHERE id = ?", (match_id,)).fetchone()
    assert row["notified_at"] is not None