"""보유종목 인텔리전스 — 순수연산 중심 (advisory). KIS 실주문 미사용."""
from __future__ import annotations
import datetime as dt
from typing import Any, Optional

from . import db
from . import price_fetcher


def _krx_tickers() -> set:
    """krx_master에 존재하는 ticker 집합 (KRX 판별용)."""
    with db._conn() as conn:
        try:
            rows = conn.execute("SELECT ticker FROM krx_master").fetchall()
        except Exception:
            return set()
    return {r["ticker"] for r in rows}


def get_holdings() -> list[dict]:
    """portfolio + 현재가 + pnl_rate + is_krx."""
    items = db.get_all_portfolio()
    tickers = [it["ticker"] for it in items]
    prices = price_fetcher.get_current_prices(tickers) if tickers else {}
    krx = _krx_tickers()
    out = []
    for it in items:
        cur = prices.get(it["ticker"])
        avg = it["avg_price"]
        pnl = ((cur - avg) / avg * 100.0) if (cur and avg) else None
        out.append({
            **it,
            "current_price": cur,
            "pnl_rate": pnl,
            "is_krx": it["ticker"] in krx,
        })
    return out