const BRIDGE_URL = "ws://localhost:9333";
const REFRESH_MS = 2000;

const badgeBridge = document.getElementById("badge-bridge");
const badgeExtension = document.getElementById("badge-extension");
const badgeLogin = document.getElementById("badge-login");
const hintText = document.getElementById("hint-text");
const btnRefresh = document.getElementById("btn-refresh");
const btnOpenXhs = document.getElementById("btn-open-xhs");

let timerId = null;

function setBadge(el, kind, text) {
  el.textContent = text;
  el.className = `badge ${kind}`;
}

function pingBridgeServer() {
  return new Promise((resolve) => {
    let settled = false;
    const finish = (value) => {
      if (settled) return;
      settled = true;
      resolve(value);
    };

    let ws;
    try {
      ws = new WebSocket(BRIDGE_URL);
    } catch (err) {
      finish({ server: false, extension: false, error: String(err) });
      return;
    }

    const timer = setTimeout(() => {
      try {
        ws.close();
      } catch (_) {
        /* ignore */
      }
      finish({ server: false, extension: false });
    }, 2500);

    ws.onopen = () => {
      ws.send(JSON.stringify({ role: "cli", method: "ping_server" }));
    };

    ws.onmessage = (event) => {
      clearTimeout(timer);
      try {
        const data = JSON.parse(event.data);
        finish({
          server: true,
          extension: !!(data.result && data.result.extension_connected),
        });
      } catch (_) {
        finish({ server: true, extension: false });
      }
      try {
        ws.close();
      } catch (_) {
        /* ignore */
      }
    };

    ws.onerror = () => {
      clearTimeout(timer);
      finish({ server: false, extension: false });
    };
  });
}

async function getExtensionWsStatus() {
  try {
    return await chrome.runtime.sendMessage({ type: "monitor_bridge_ws" });
  } catch (_) {
    return { extension_connected: false };
  }
}

async function checkXhsLogin() {
  try {
    return await chrome.runtime.sendMessage({ type: "monitor_check_login" });
  } catch (err) {
    return { logged_in: false, error: String(err) };
  }
}

async function refreshStatus() {
  const now = new Date().toLocaleTimeString("zh-CN", { hour12: false });
  hintText.textContent = `更新于 ${now}`;

  setBadge(badgeBridge, "idle", "检测中…");
  setBadge(badgeExtension, "idle", "检测中…");
  setBadge(badgeLogin, "idle", "检测中…");

  const [bridge, wsStatus, login] = await Promise.all([
    pingBridgeServer(),
    getExtensionWsStatus(),
    checkXhsLogin(),
  ]);

  if (bridge.server) {
    setBadge(badgeBridge, "ok", "运行中");
  } else {
    setBadge(badgeBridge, "err", "未启动");
  }

  const extOk = bridge.extension || wsStatus.extension_connected;
  if (extOk) {
    setBadge(badgeExtension, "ok", "已连接");
  } else if (bridge.server) {
    setBadge(badgeExtension, "warn", "未连上");
  } else {
    setBadge(badgeExtension, "err", "未连接");
  }

  if (login.logged_in) {
    setBadge(badgeLogin, "ok", "已登录");
  } else if (login.uncertain) {
    setBadge(badgeLogin, "warn", "不确定");
  } else {
    setBadge(badgeLogin, "warn", "未登录");
  }

  if (login.hint) {
    hintText.textContent = `${login.hint} · ${now}`;
  }
}

function startAutoRefresh() {
  if (timerId) clearInterval(timerId);
  timerId = setInterval(refreshStatus, REFRESH_MS);
}

btnRefresh.addEventListener("click", () => {
  refreshStatus();
});

btnOpenXhs.addEventListener("click", () => {
  chrome.tabs.create({ url: "https://www.xiaohongshu.com/" });
});

refreshStatus();
startAutoRefresh();

document.addEventListener("visibilitychange", () => {
  if (document.visibilityState === "visible") {
    refreshStatus();
  }
});