#!/usr/bin/env python3
"""market_insight.py — 基于 market.json 数据生成基础洞察 + 潜力挖掘

输出：更新 data/market.json 中的 insights / potential_stocks 字段

策略：
  1. 行业热点 vs 持仓匹配 → 相关影响
  2. 资金流向异常 → 关注信号
  3. 市场情绪 → 每日研判
  4. 潜力挖掘 → 强势行业中寻找持仓相关标的
"""

import json
import sys
from datetime import datetime
from pathlib import Path

DATA_DIR = Path(__file__).parent / "data"

# ── 持仓股 → 行业映射（从 stock_profiles 自动提取） ──

def load_holding_industry_map():
    """从 stock_profiles 和 portfolio 提取持仓→行业映射"""
    try:
        with open(DATA_DIR / "stock_profiles.json", "r", encoding="utf-8") as f:
            profiles = json.load(f).get("profiles", [])

        with open(DATA_DIR / "portfolio.json", "r", encoding="utf-8") as f:
            portfolio = json.load(f)
    except FileNotFoundError:
        return {}

    # 构建 code→name 映射（从 portfolio）
    code_to_name = {}
    for item in portfolio.get("holdings", []):
        code_to_name[item.get("code", "")] = item.get("name", "")

    # 构建行业→持仓列表
    industry_holdings = {}
    for p in profiles:
        code = p.get("code", "")
        name = p.get("name", "")
        sector = p.get("sector", "")
        if not sector or sector == "待补全":
            continue
        # 提取一级行业（取斜杠前第一个）
        primary = sector.split("/")[0].split("（")[0].strip()
        if primary:
            industry_holdings.setdefault(primary, []).append({
                "code": code,
                "name": name,
                "sector": sector,
            })
    return industry_holdings


def generate():
    # 加载数据
    market_path = DATA_DIR / "market.json"
    with open(market_path, "r", encoding="utf-8") as f:
        market = json.load(f)

    sectors = market.get("sectors", [])
    top_gainers = market.get("top_gainers", [])
    top_losers = market.get("top_losers", [])
    mood = market.get("mood", "unknown")
    up_ratio = market.get("up_ratio", 0)
    timestamp = market.get("timestamp", "")

    industry_holdings = load_holding_industry_map()
    insights = []
    potentials = []

    # ── 洞察1：市场情绪总览 ──
    mood_cn = {"bullish": "偏强", "neutral": "中性", "bearish": "偏弱", "unknown": "未知"}
    insights.append(
        f"市场情绪{mood_cn.get(mood, '未知')}，上涨占比{up_ratio}%"
    )

    # ── 洞察2：领涨行业 vs 持仓影响 ──
    gainer_insights = []
    for g in top_gainers[:3]:
        name = g.get("name", "")
        change = g.get("change", 0)
        # 看持仓中是否有该行业
        matched = []
        for industry, holdings in industry_holdings.items():
            if industry in name or name in industry:
                matched.extend([h["name"] for h in holdings])
        if matched:
            gainer_insights.append(
                f"{name}+{change}%, 关联持仓{'/'.join(matched[:3])}受益"
            )
        else:
            gainer_insights.append(f"{name}+{change}%, 暂无持仓")
    if gainer_insights:
        insights.append("领涨板块: " + " | ".join(gainer_insights[:2]))

    # ── 洞察3：领跌行业 vs 持仓风险 ──
    loser_insights = []
    for g in top_losers[:3]:
        name = g.get("name", "")
        change = g.get("change", 0)
        matched = []
        for industry, holdings in industry_holdings.items():
            if industry in name or name in industry:
                matched.extend([h["name"] for h in holdings])
        if matched:
            loser_insights.append(
                f"{name}{change}%, {'/'.join(matched[:2])}需关注"
            )
        else:
            loser_insights.append(f"{name}{change}%")
    if loser_insights:
        insights.append("风险板块: " + " | ".join(loser_insights[:3]))

    # ── 洞察4：资金流向异动 ──
    big_inflow = [s for s in sectors if s.get("net_inflow", 0) > 50]
    big_outflow = [s for s in sectors if s.get("net_inflow", 0) < -50]
    if big_inflow:
        top = max(big_inflow, key=lambda s: s["net_inflow"])
        insights.append(
            f"资金流入最大: {top['name']} {top['net_inflow']}亿"
        )
    if big_outflow:
        top = min(big_outflow, key=lambda s: s["net_inflow"])
        insights.append(
            f"资金流出最大: {top['name']} {top['net_inflow']}亿"
        )

    # ── 潜力股挖掘：从强势行业中找持仓或自选相关 ──
    for g in top_gainers[:5]:
        name = g.get("name", "")
        change = g.get("change", 0)
        if change < 2:
            continue  # 只关注涨>2%的

        # 找该行业指数有没有关联持仓
        lead_stock = g.get("lead_stock", "")
        if lead_stock:
            potentials.append({
                "name": lead_stock,
                "reason": f"{name}领涨股, 板块+{change}%",
            })

        # 看持仓中是否有该行业
        for industry, holdings in industry_holdings.items():
            if industry in name or name in industry:
                for h in holdings:
                    potentials.append({
                        "name": h["name"],
                        "reason": f"所在行业{name}涨{change}%",
                    })

    # 去重（最多5条）
    seen = set()
    unique_potentials = []
    for p in potentials:
        key = p["name"]
        if key not in seen:
            seen.add(key)
            unique_potentials.append(p)
            if len(unique_potentials) >= 5:
                break
    potentials = unique_potentials

    # ── 写入 market.json ──
    market["insights"] = insights
    market["potential_stocks"] = potentials
    market["insight_timestamp"] = datetime.now().strftime("%Y-%m-%d %H:%M")

    with open(market_path, "w", encoding="utf-8") as f:
        json.dump(market, f, ensure_ascii=False, indent=2)

    print(f"生成{len(insights)}条洞察 + {len(potentials)}条潜力挖掘")


if __name__ == "__main__":
    generate()