#!/usr/bin/env python3
"""
独立进程：轮询 Fish API 的两个结果接口，用 loguru 输出响应。

接口每次 GET 会「消费」一条未投递快照；仅当响应头 X-Fish-Biomass-New: 1（或 JSON code!=200）时打日志。

  cd <仓库根目录>
  BIOMASS_API_BASE=http://127.0.0.1:8000 POLL_INTERVAL=5 python3 scripts/biomass_poller.py

依赖（与 fish_api dev 组一致）：httpx、loguru
  cd fish_api && pip install -e ".[dev]"
"""

from __future__ import annotations

import argparse
import asyncio
import json
import os
import sys
from typing import Any

import httpx
from loguru import logger


def _fmt_body(resp: httpx.Response) -> Any:
    try:
        return resp.json()
    except Exception:
        return resp.text


def _should_log(resp: httpx.Response, body: Any) -> bool:
    """有新投递的快照（X-Fish-Biomass-New: 1）或业务错误（JSON code!=200）时打日志。"""
    if not isinstance(body, dict):
        return bool(body)
    if body.get("code") != 200:
        return True
    return resp.headers.get("X-Fish-Biomass-New", "").strip() == "1"


async def poll_once(
    client: httpx.AsyncClient, base: str, extra_headers: dict[str, str]
) -> None:
    base = base.rstrip("/")
    camera_url = f"{base}/api/v1/biomass/real/camera/"
    health_url = f"{base}/api/v1/biomass/health/result/"
    r1 = await client.get(camera_url, headers=extra_headers)
    r2 = await client.get(health_url, headers=extra_headers)
    b1 = _fmt_body(r1)
    b2 = _fmt_body(r2)
    if _should_log(r1, b1):
        logger.info("[real/camera/] HTTP {} | {}", r1.status_code, json.dumps(b1, ensure_ascii=False))
    if _should_log(r2, b2):
        logger.info("[health/result/] HTTP {} | {}", r2.status_code, json.dumps(b2, ensure_ascii=False))


async def poll_loop(
    base: str, interval: float, extra_headers: dict[str, str]
) -> None:
    async with httpx.AsyncClient(timeout=30.0) as client:
        while True:
            try:
                await poll_once(client, base, extra_headers)
            except Exception:
                logger.exception("poll round failed")
            await asyncio.sleep(max(interval, 0.5))


def main() -> None:
    parser = argparse.ArgumentParser(description="Poll Fish API biomass GET endpoints.")
    parser.add_argument(
        "--base-url",
        default=os.environ.get("BIOMASS_API_BASE", "http://127.0.0.1:8000"),
        help="Fish API 根 URL（默认 BIOMASS_API_BASE 或 http://127.0.0.1:8000）",
    )
    parser.add_argument(
        "--interval",
        type=float,
        default=float(os.environ.get("POLL_INTERVAL", "5")),
        help="轮询间隔秒数（默认 POLL_INTERVAL 或 5）",
    )
    parser.add_argument(
        "--client-id",
        default=os.environ.get("BIOMASS_CLIENT_ID", "").strip() or None,
        help="传给 X-Fish-Client-Id（默认 BIOMASS_CLIENT_ID；不设则与网关 default 游标一致）",
    )
    args = parser.parse_args()

    logger.remove()
    logger.add(
        sys.stderr,
        level=os.environ.get("LOG_LEVEL", "INFO"),
        format="<green>{time:YYYY-MM-DD HH:mm:ss.SSS}</green> | "
        "<level>{level: <8}</level> | "
        "<level>{message}</level>",
    )
    extra: dict[str, str] = {}
    if args.client_id:
        extra["X-Fish-Client-Id"] = args.client_id
    logger.info(
        "biomass_poller 启动 | base={} | interval={}s | client_id={} | GET biomass real/camera + health/result",
        args.base_url.rstrip("/"),
        args.interval,
        args.client_id or "(default)",
    )
    asyncio.run(poll_loop(args.base_url, args.interval, extra))


if __name__ == "__main__":
    main()