/* app.js — 基础前端交互 + 管理后台共享工具 */

// Ctrl+K 或 / 聚焦搜索框
document.addEventListener("keydown", function (e) {
  var input = document.querySelector(".nav-search-input");
  if (!input) return;

  if (e.target.tagName === "INPUT" || e.target.tagName === "TEXTAREA") return;

  if ((e.ctrlKey || e.metaKey) && e.key === "k") {
    e.preventDefault();
    input.focus();
  } else if (e.key === "/") {
    e.preventDefault();
    input.focus();
  }
});

// ── Toast 通知（管理后台共享）──────────────────────────────────────────

function showToast(msg, opts) {
  opts = opts || {};
  var duration = opts.duration || 2500;
  var callback = opts.callback || null;

  var t = document.createElement("div");
  t.className = "admin-toast";
  t.textContent = String(msg).substring(0, 200);
  document.body.appendChild(t);
  requestAnimationFrame(function () { t.classList.add("show"); });
  setTimeout(function () {
    t.classList.remove("show");
    setTimeout(function () {
      t.remove();
      if (typeof callback === "function") callback();
    }, 300);
  }, duration);
}

// ── Admin 通用操作（管理后台共享）───────────────────────────────────────

function adminAction(action, callback) {
  fetch("/admin/" + action, {
    method: "POST",
    headers: { "Content-Type": "application/json" },
  })
    .then(function (r) {
      if (r.status === 303 || r.status === 401) {
        window.location.href = "/admin/login";
        return;
      }
      return r.json();
    })
    .then(function (data) {
      if (data) {
        showToast(data.error ? "❌ " + data.error.substring(0, 200) : "✅ 操作成功");
        if (typeof callback === "function") callback(data);
      }
    })
    .catch(function (err) {
      showToast("❌ 请求失败");
    });
}