/**
 * AIBOT 长连接桥（骨架）
 *
 * 本文件职责：仅做本机回环 HTTP 健康检查与转发壳；不拥有业务状态。
 * 端口：环境变量 AIBOT_BRIDGE_PORT（测试默认 8913），绑定 AIBOT_BRIDGE_BIND（默认 127.0.0.1）。
 * 禁止：并存期连接现网 Bot 长连接（现网 8813 已占用）；禁止在本进程写工单/六态/Graph。
 * 启动：在 aibot-bridge 目录执行 node server.cjs
 */

"use strict";

const http = require("http");

const port = Number(process.env.AIBOT_BRIDGE_PORT || 8913);
const bind = process.env.AIBOT_BRIDGE_BIND || "127.0.0.1";
const enabled = String(process.env.WECOM_AIBOT_ENABLED || "false").toLowerCase() === "true";

const server = http.createServer((req, res) => {
  // 只处理短请求；真实 AIBOT 帧转发后续迭代。请求线程不做业务。
  if (req.url === "/health" || req.url === "/health/") {
    const body = JSON.stringify({
      status: "UP",
      service: "aibot-bridge",
      bind,
      port,
      wecomAibotEnabled: enabled,
      note: enabled
        ? "enabled flag on — 仍须确认未与现网双连"
        : "scaffold: Bot 长连接默认关闭（并存期禁止再连）",
    });
    res.writeHead(200, { "Content-Type": "application/json; charset=utf-8" });
    res.end(body);
    return;
  }

  res.writeHead(404, { "Content-Type": "application/json; charset=utf-8" });
  res.end(JSON.stringify({ error: "not_found", path: req.url }));
});

server.listen(port, bind, () => {
  // eslint-disable-next-line no-console
  console.log(
    `[aibot-bridge] listening http://${bind}:${port}/health wecomAibotEnabled=${enabled}`
  );
  if (enabled) {
    // eslint-disable-next-line no-console
    console.warn(
      "[aibot-bridge] WECOM_AIBOT_ENABLED=true：请确认已停现网桥且不会双连同一 Bot"
    );
  }
});