"""拉取各 crypto_okx 客户端只读快照."""
from __future__ import annotations

import os
import time
from concurrent.futures import ThreadPoolExecutor, as_completed
from typing import Any

import requests

from lib.instances_lib import list_instances


def _timeout() -> float:
    try:
        return max(2.0, float(os.getenv("HUB_PULL_TIMEOUT_SEC") or 5))
    except (TypeError, ValueError):
        return 5.0


def fetch_one_snapshot(inst: dict[str, Any]) -> dict[str, Any]:
    base = (inst.get("base_url") or "").rstrip("/")
    token = (inst.get("bridge_token") or "").strip()
    out: dict[str, Any] = {
        "id": inst.get("id"),
        "name": inst.get("name"),
        "base_url": base,
        "embed_path": inst.get("embed_path") or "/embed",
        "tags": inst.get("tags") or "",
        "online": False,
        "error": "",
        "snapshot": None,
        "pulled_at": time.strftime("%Y-%m-%d %H:%M:%S"),
    }
    if not base or not token:
        out["error"] = "缺少 URL 或 Token"
        return out
    url = f"{base}/api/hub/options/snapshot"
    try:
        r = requests.get(
            url,
            headers={"X-Hub-Token": token, "Accept": "application/json"},
            timeout=_timeout(),
        )
        data = {}
        try:
            data = r.json()
        except Exception:
            data = {}
        if r.status_code != 200 or not isinstance(data, dict) or not data.get("ok"):
            out["error"] = (data.get("msg") if isinstance(data, dict) else None) or f"HTTP {r.status_code}"
            out["snapshot"] = data if isinstance(data, dict) else None
            return out
        out["online"] = True
        out["snapshot"] = data
        return out
    except requests.Timeout:
        out["error"] = "超时"
        return out
    except Exception as e:
        out["error"] = str(e) or "拉取失败"
        return out


def pull_all_enabled() -> list[dict[str, Any]]:
    instances = list_instances(enabled_only=True)
    if not instances:
        return []
    results: list[dict[str, Any]] = []
    with ThreadPoolExecutor(max_workers=min(8, len(instances))) as pool:
        futs = {pool.submit(fetch_one_snapshot, inst): inst["id"] for inst in instances}
        by_id: dict[Any, dict[str, Any]] = {}
        for fut in as_completed(futs):
            row = fut.result()
            by_id[row.get("id")] = row
        for inst in instances:
            results.append(by_id.get(inst["id"]) or fetch_one_snapshot(inst))
    return results