#!/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。

  BIOMASS_API_BASE=http://127.0.0.1:8000 POLL_INTERVAL=5 \\
    python 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


_last_camera: dict | None = None
_last_health: dict | None = None


def _has_data(body: Any) -> bool:
    """非空业务数据：code==200 且 data 里至少有一个非空字段。"""
    if not isinstance(body, dict):
        return False
    if body.get("code") != 200:
        return True  # 错误也算"新信息"
    data = body.get("data", {})
    if not isinstance(data, dict):
        return bool(data)
    return any(bool(v) for v in data.values())


async def poll_once(client: httpx.AsyncClient, base: str) -> None:
    global _last_camera, _last_health
    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)
    r2 = await client.get(health_url)
    b1 = _fmt_body(r1)
    b2 = _fmt_body(r2)
    changed1 = b1 != _last_camera
    changed2 = b2 != _last_health
    if changed1 and _has_data(b1):
        logger.info("[real/camera/] HTTP {} | {}", r1.status_code, json.dumps(b1, ensure_ascii=False))
    if changed2 and _has_data(b2):
        logger.info("[health/result/] HTTP {} | {}", r2.status_code, json.dumps(b2, ensure_ascii=False))
    _last_camera = b1
    _last_health = b2


async def poll_loop(base: str, interval: float) -> None:
    async with httpx.AsyncClient(timeout=30.0) as client:
        while True:
            try:
                await poll_once(client, base)
            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）",
    )
    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>",
    )
    logger.info(
        "biomass_poller 启动 | base={} | interval={}s | GET /api/v1/biomass/real/camera/ 与 /health/result/",
        args.base_url.rstrip("/"),
        args.interval,
    )
    asyncio.run(poll_loop(args.base_url, args.interval))


if __name__ == "__main__":
    main()