"""1년치 데이터 수집 — 10분봉 OHLCV + F&G 히스토리.

생성 파일:
  data/sim1y_cache.pkl   — {"10m": {ticker: DataFrame}}  (10분봉, 365일)
  data/fng_1y.json       — {"YYYY-MM-DD": int, ...}      (Fear & Greed 1년치)

소요 시간: 약 10~15분 (20종목 × 263 API 호출)
"""
import os as _os, sys as _sys
_sys.path.insert(0, _os.path.dirname(_os.path.dirname(_os.path.abspath(__file__))))

import json
import pickle
import time
import urllib.request
from datetime import datetime, timedelta
from pathlib import Path

import pandas as pd
import pyupbit
from dotenv import load_dotenv

load_dotenv(dotenv_path=Path(__file__).parent.parent / ".env")

# ── 설정 ─────────────────────────────────────────────────
CACHE_FILE  = Path(__file__).parent.parent / "data" / "sim1y_cache.pkl"
FNG_FILE    = Path(__file__).parent.parent / "data" / "fng_1y.json"
TOP30_FILE  = Path(__file__).parent.parent / "data" / "top30_tickers.pkl"
DAYS        = 365
TOP_N       = 20


# ── 10분봉 수집 ───────────────────────────────────────────
def fetch_10m(ticker: str, days: int) -> "pd.DataFrame | None":
    target_start = datetime.now() - timedelta(days=days)
    all_dfs, to, prev_oldest = [], None, None
    while True:
        kwargs = dict(ticker=ticker, interval="minute10", count=200)
        if to:
            kwargs["to"] = to.strftime("%Y-%m-%d %H:%M:%S")
        try:
            df = pyupbit.get_ohlcv(**kwargs)
        except Exception:
            time.sleep(0.5)
            break
        if df is None or df.empty:
            break
        all_dfs.append(df)
        oldest = df.index[0]
        if prev_oldest is not None and oldest >= prev_oldest:
            break
        prev_oldest = oldest
        if oldest <= target_start:
            break
        to = oldest
        time.sleep(0.12)
    if not all_dfs:
        return None
    combined = pd.concat(all_dfs).sort_index()
    combined = combined[~combined.index.duplicated(keep="last")]
    return combined[combined.index >= target_start]


# ── F&G 1년치 수집 ────────────────────────────────────────
def fetch_fng(limit: int = 400) -> dict:
    url = f"https://api.alternative.me/fng/?limit={limit}&format=json"
    with urllib.request.urlopen(url, timeout=15) as r:
        data = json.loads(r.read())
    result = {}
    for e in data["data"]:
        dt = datetime.fromtimestamp(int(e["timestamp"]))
        result[dt.strftime("%Y-%m-%d")] = int(e["value"])
    return result


# ── 메인 ─────────────────────────────────────────────────
def main():
    # ── 종목 목록 ─────────────────────────────────────────
    try:
        from core.market import get_top_tickers
        tickers = get_top_tickers()[:TOP_N]
        print(f"Top{TOP_N} 종목 API 조회: {tickers}\n")
        # top30 파일 갱신
        pickle.dump(tickers, open(TOP30_FILE, "wb"))
    except Exception as e:
        print(f"  [경고] 종목 API 실패: {e}")
        if TOP30_FILE.exists():
            tickers = pickle.load(open(TOP30_FILE, "rb"))[:TOP_N]
            print(f"  기존 top30 파일 사용: {tickers}\n")
        else:
            print("  [오류] 종목 목록 없음. 종료.")
            return

    # ── F&G 1년치 ─────────────────────────────────────────
    print("F&G 1년치 수집...")
    try:
        fng_map = fetch_fng(limit=400)
        sorted_dates = sorted(fng_map.keys())
        print(f"  기간: {sorted_dates[0]} ~ {sorted_dates[-1]}  ({len(fng_map)}일)")
        # 분포
        zones = {"극공포(≤25)": 0, "공포(26~40)": 0, "중립(41~55)": 0,
                 "탐욕(56~75)": 0, "극탐욕(76+)": 0}
        for v in fng_map.values():
            if   v <= 25: zones["극공포(≤25)"]  += 1
            elif v <= 40: zones["공포(26~40)"]   += 1
            elif v <= 55: zones["중립(41~55)"]   += 1
            elif v <= 75: zones["탐욕(56~75)"]   += 1
            else:         zones["극탐욕(76+)"]   += 1
        total = sum(zones.values())
        for name, cnt in zones.items():
            print(f"    {name:12} {cnt:>3}일  ({cnt/total*100:.1f}%)")
        json.dump(fng_map, open(FNG_FILE, "w"))
        print(f"  저장: {FNG_FILE}\n")
    except Exception as e:
        print(f"  [오류] F&G 수집 실패: {e}\n")
        fng_map = {}

    # ── 10분봉 1년치 ──────────────────────────────────────
    print(f"10분봉 {DAYS}일치 수집 중 ({len(tickers)}종목)...")
    print(f"  예상 소요: {len(tickers) * 265 * 0.12 / 60:.0f}~{len(tickers) * 265 * 0.15 / 60:.0f}분\n")

    data = {"10m": {}}
    for i, ticker in enumerate(tickers, 1):
        start_t = time.time()
        df = fetch_10m(ticker, DAYS)
        elapsed = time.time() - start_t
        if df is not None and len(df) > 500:
            data["10m"][ticker] = df
            candles = len(df)
            period = f"{df.index[0].strftime('%Y-%m-%d')}~{df.index[-1].strftime('%Y-%m-%d')}"
            print(f"  {i:>2}/{len(tickers)} {ticker:<15} {candles:>6}봉  {period}  ({elapsed:.0f}s)")
        else:
            print(f"  {i:>2}/{len(tickers)} {ticker:<15} 데이터 부족 ({elapsed:.0f}s)")
        time.sleep(0.15)

    # ── 저장 ──────────────────────────────────────────────
    print(f"\n수집 완료: {len(data['10m'])}종목")
    if data["10m"]:
        sample = next(iter(data["10m"].values()))
        print(f"기간: {sample.index[0].strftime('%Y-%m-%d')} ~ {sample.index[-1].strftime('%Y-%m-%d')}")
        print(f"봉 수: {len(sample)}개 (10분봉)")
        # 파일 크기 추정
        import sys
        size_mb = sys.getsizeof(pickle.dumps(data)) / 1024 / 1024
        print(f"예상 크기: {size_mb:.1f} MB")

    pickle.dump(data, open(CACHE_FILE, "wb"))
    print(f"\n캐시 저장: {CACHE_FILE}")
    print("완료!")


if __name__ == "__main__":
    main()