(function () {
  function fmtVer(v) {
    if (!v || !v.online) return v && v.msg ? String(v.msg) : "离线";
    const short = v.short_sha || (v.sha ? String(v.sha).slice(0, 7) : "");
    const branch = v.branch ? v.branch + " · " : "";
    if (!short) return "未知版本";
    return branch + short + (v.dirty ? " (dirty)" : "");
  }

  async function refreshVersion(row) {
    const iid = row.getAttribute("data-id");
    const verEl = row.querySelector("[data-inst-version]");
    if (!iid || !verEl) return;
    verEl.textContent = "…";
    verEl.className = "update-version muted";
    try {
      const r = await fetch("/api/instances/" + iid + "/version", {
        credentials: "same-origin",
        headers: { Accept: "application/json" },
      });
      const v = await r.json();
      if (v && v.online) {
        verEl.textContent = fmtVer(v);
        verEl.className = "update-version online";
      } else {
        verEl.textContent = (v && v.msg) || "离线";
        verEl.className = "update-version offline";
      }
    } catch (e) {
      verEl.textContent = "探测失败";
      verEl.className = "update-version offline";
    }
  }

  function bindTokenToggles(root) {
    (root || document).querySelectorAll(".inst-token-toggle").forEach(function (btn) {
      if (btn.dataset.bound) return;
      btn.dataset.bound = "1";
      btn.addEventListener("click", function () {
        const wrap = btn.closest(".inst-token-wrap");
        const input = wrap && wrap.querySelector(".inst-token-input");
        if (!input) return;
        const show = input.type === "password";
        input.type = show ? "text" : "password";
        btn.textContent = show ? "隐藏" : "显示";
      });
    });
  }

  function boot() {
    bindTokenToggles(document);
    document.querySelectorAll("tr.inst-row[data-id]").forEach(function (row) {
      refreshVersion(row);
      const btn = row.querySelector("[data-inst-refresh-ver]");
      if (btn) {
        btn.addEventListener("click", function (e) {
          e.preventDefault();
          refreshVersion(row);
        });
      }
    });
  }

  if (document.readyState === "loading") {
    document.addEventListener("DOMContentLoaded", boot);
  } else {
    boot();
  }
})();