"""야구 일정·결과 수집 — KBO(네이버 비공식) + MLB(공식 Stats API).

반환 표준 레코드 (두 리그 공통):
  {league, teamA(원정), teamB(홈), dateKst 'YYYYMMDD', kickoffKst ISO(+09:00),
   venue, cancelled, [scoreA, scoreB]}
야구는 같은 두 팀이 시즌 내 반복 대결 → 경기 식별에 반드시 dateKst 포함.
"""
from __future__ import annotations

import logging
from datetime import datetime, timedelta, timezone

from ..config import settings
from ..teams_baseball import KBO_TEAMS, MLB_ID_TO_CODE

log = logging.getLogger("triplepick.baseball")

KST = timezone(timedelta(hours=9))
UA = {
    "User-Agent": (
        "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
        "(KHTML, like Gecko) Chrome/126.0 Safari/537.36"
    )
}


# ── KBO (네이버) ───────────────────────────────────────────────
async def _fetch_kbo(days_back: int, days_ahead: int) -> list[dict]:
    import httpx

    today = datetime.now(KST).date()
    url = (
        f"{settings.naver_api_base}/schedule/games"
        "?fields=basic,stadium,statusNum"
        "&upperCategoryId=kbaseball&categoryId=kbo"
        f"&fromDate={(today - timedelta(days=days_back)).isoformat()}"
        f"&toDate={(today + timedelta(days=days_ahead)).isoformat()}&size=500"
    )
    async with httpx.AsyncClient(timeout=20) as c:
        r = await c.get(url, headers=UA)
        r.raise_for_status()
        games = (r.json().get("result") or {}).get("games") or []

    out: list[dict] = []
    for g in games:
        a = (g.get("awayTeamCode") or "").upper()
        b = (g.get("homeTeamCode") or "").upper()
        if a not in KBO_TEAMS or b not in KBO_TEAMS:
            continue  # 올스타/시범 등 제외
        dt = g.get("gameDateTime")  # KST, 오프셋 없음
        if not dt:
            continue
        kickoff = datetime.fromisoformat(dt).replace(tzinfo=KST)
        rec = {
            "league": "kbo",
            "teamA": a, "teamB": b,
            "dateKst": kickoff.strftime("%Y%m%d"),
            "kickoffKst": kickoff.isoformat(),
            "venue": g.get("stadium", ""),
            "cancelled": bool(g.get("cancel")),
        }
        if g.get("statusCode") == "RESULT" and not rec["cancelled"]:
            sa, sb = g.get("awayTeamScore"), g.get("homeTeamScore")
            if sa is not None and sb is not None:
                rec["scoreA"], rec["scoreB"] = int(sa), int(sb)
        out.append(rec)
    return out


# ── MLB (공식 Stats API) ───────────────────────────────────────
async def _fetch_mlb(days_back: int, days_ahead: int) -> list[dict]:
    import httpx

    today = datetime.now(KST).date()
    url = (
        f"{settings.mlb_api_base}/v1/schedule?sportId=1"
        f"&startDate={(today - timedelta(days=days_back)).isoformat()}"
        f"&endDate={(today + timedelta(days=days_ahead)).isoformat()}"
    )
    async with httpx.AsyncClient(timeout=20) as c:
        r = await c.get(url)
        r.raise_for_status()
        data = r.json()

    out: list[dict] = []
    for day in data.get("dates") or []:
        for g in day.get("games") or []:
            a = MLB_ID_TO_CODE.get((g["teams"]["away"]["team"] or {}).get("id"))
            b = MLB_ID_TO_CODE.get((g["teams"]["home"]["team"] or {}).get("id"))
            if not a or not b:
                continue  # 올스타전 등 제외
            gd = g.get("gameDate")  # ISO UTC
            if not gd:
                continue
            kickoff = (
                datetime.fromisoformat(gd.replace("Z", "+00:00")).astimezone(KST)
            )
            state = (g.get("status") or {}).get("detailedState", "")
            rec = {
                "league": "mlb",
                "teamA": a, "teamB": b,
                "dateKst": kickoff.strftime("%Y%m%d"),
                "kickoffKst": kickoff.isoformat(),
                "venue": (g.get("venue") or {}).get("name", ""),
                "cancelled": state in ("Postponed", "Cancelled", "Suspended"),
                "gamePk": g.get("gamePk"),  # MLB 라이브 피드 키
            }
            if state == "Final" and not rec["cancelled"]:
                sa = g["teams"]["away"].get("score")
                sb = g["teams"]["home"].get("score")
                if sa is not None and sb is not None:
                    rec["scoreA"], rec["scoreB"] = int(sa), int(sb)
            out.append(rec)
    return out


# ── 공개 API ────────────────────────────────────────────────────
async def fetch_baseball_schedule(league: str) -> list[dict]:
    """리그 일정+결과 수집 (취소 포함). 실패 시 빈 리스트 — 기존 일정 유지."""
    try:
        if league == "kbo":
            records = await _fetch_kbo(settings.result_recheck_days, settings.baseball_days_ahead)
        elif league == "mlb":
            records = await _fetch_mlb(settings.result_recheck_days, settings.baseball_days_ahead)
        else:
            return []
        # 더블헤더 차수 부여 — sync·정산이 같은 seq 로 경기를 식별한다.
        from .baseball_sync import assign_seq

        assign_seq(records)
        log.info("baseball schedule(%s): %d경기 수집", league, len(records))
        return records
    except Exception as e:  # noqa: BLE001
        log.error("baseball schedule(%s) 실패: %s — 기존 일정 유지", league, e)
        return []


async def fetch_baseball_results(league: str) -> list[dict]:
    """확정 스코어만 → [{league, teamA, teamB, dateKst, scoreA, scoreB}]."""
    return [r for r in await fetch_baseball_schedule(league) if "scoreA" in r]