"""Feishu webhook transport for system error alerts."""

from __future__ import annotations

import os

import requests


def _webhook_url() -> str:
    return os.getenv("ALPHAX_SYSTEM_ERROR_FEISHU_WEBHOOK", "").strip()


def _runtime_env() -> str:
    return str(os.getenv("ALPHAX_ENV") or "dev").strip().lower() or "dev"


def _enabled() -> bool:
    raw = os.getenv("ALPHAX_SYSTEM_ERROR_FEISHU_ENABLED", "1")
    return str(raw).strip().lower() in ("1", "true", "yes", "on")


def push_system_error_alert(item: dict) -> tuple[bool, object]:
    """Send one system error alert. This function must never raise."""
    try:
        if not _enabled():
            return False, "system error alert disabled"
        webhook = _webhook_url()
        if not webhook:
            return False, "ALPHAX_SYSTEM_ERROR_FEISHU_WEBHOOK not configured"
        title = f"AlphaX 系统错误 #{item.get('id') or '--'}"
        env = _runtime_env()
        if env not in ("prod", "production"):
            title = f"[{env.upper()}] {title}"
        message = str(item.get("message") or "--")
        stack = str(item.get("stack_trace") or "")
        if len(stack) > 900:
            stack = stack[:900] + "\n..."
        fields = [
            ("级别", item.get("level") or "--"),
            ("来源", item.get("source") or "--"),
            ("类型", item.get("error_type") or "--"),
            ("状态", item.get("status_code") or "--"),
            ("路径", item.get("request_path") or "--"),
            ("时间", item.get("created_at") or "--"),
            ("指纹", item.get("fingerprint") or "--"),
        ]
        content = "\n".join(f"**{label}**: {value}" for label, value in fields)
        card = {
            "config": {"wide_screen_mode": True},
            "header": {
                "template": "red" if str(item.get("level") or "") == "error" else "yellow",
                "title": {"tag": "plain_text", "content": title},
            },
            "elements": [
                {"tag": "div", "text": {"tag": "lark_md", "content": content}},
                {"tag": "div", "text": {"tag": "lark_md", "content": f"**消息**: {message[:900]}"}},
                {"tag": "note", "elements": [{"tag": "plain_text", "content": "请到日志中心 /logs 查看完整上下文与堆栈。"}]},
            ],
        }
        if stack:
            card["elements"].append({"tag": "div", "text": {"tag": "lark_md", "content": f"```text\n{stack}\n```"}})
        resp = requests.post(webhook, json={"msg_type": "interactive", "card": card}, timeout=10)
        result = resp.json()
        ok = resp.status_code == 200 and result.get("StatusCode") == 0
        return ok, result
    except Exception as exc:
        return False, str(exc)


__all__ = ["push_system_error_alert"]