"""板块数据路由：行业板块、概念板块"""

from fastapi import APIRouter, Query, HTTPException
from fastapi.responses import JSONResponse
from services import eastmoney, mootdx

router = APIRouter()

# 行业/概念通过 query 参数区分，但上游反代/CDN 可能按 path 缓存而忽略 query，
# 导致两个 tab 返回相同数据。显式禁止缓存，保证按 query 区分。
_NO_CACHE_HEADERS = {"Cache-Control": "no-store, no-cache, must-revalidate, max-age=0"}


@router.get("", summary="板块列表")
async def sector_list(
    type: str = Query("industry", description="板块类型：industry=行业板块, concept=概念板块"),
):
    if type not in ("industry", "concept"):
        raise HTTPException(status_code=400, detail="板块类型错误，仅支持 industry/concept")

    data = await eastmoney.fetch_sector_list(type)
    if data:
        return JSONResponse(
            {"data": data, "count": len(data), "type": type},
            headers=_NO_CACHE_HEADERS,
        )

    # 降级：通达信 mootdx（不含实时资金流数据）
    md_data = await mootdx.fetch_sector_list(type)
    if md_data:
        return JSONResponse(
            {"data": md_data, "count": len(md_data), "type": type, "source": "mootdx"},
            headers=_NO_CACHE_HEADERS,
        )

    return JSONResponse(
        {"data": [], "count": 0, "type": type},
        headers=_NO_CACHE_HEADERS,
    )