(function () {
  "use strict";

  async function api(url, body, method) {
    var res = await fetch(url, {
      method: method || "POST",
      headers: { "content-type": "application/json" },
      body: body === undefined ? undefined : JSON.stringify(body),
    });
    var json = null;
    try { json = await res.json(); } catch (e) {}
    if (!res.ok || (json && json.ok === false)) {
      if (res.status === 401) { location.href = "/login"; return new Promise(function () {}); }
      throw new Error((json && json.error && json.error.message) || "请求失败（" + res.status + "）");
    }
    return json;
  }

  function toast(msg) {
    var el = document.querySelector(".toast");
    if (!el) return;
    el.textContent = msg;
    el.classList.add("show");
    clearTimeout(el._t);
    el._t = setTimeout(function () { el.classList.remove("show"); }, 2600);
  }

  function refresh() {
    setTimeout(function () { location.reload(); }, 500);
  }

  document.querySelectorAll(".admin-nav button[data-section]").forEach(function (btn) {
    btn.addEventListener("click", function () {
      document.querySelectorAll(".admin-nav button").forEach(function (b) {
        b.setAttribute("aria-current", "false");
      });
      btn.setAttribute("aria-current", "true");
      var id = btn.getAttribute("data-section");
      document.querySelectorAll(".admin-main > section").forEach(function (s) {
        s.classList.toggle("active", s.id === id);
      });
    });
  });

  document.querySelectorAll(".tree-row[data-tree]").forEach(function (row) {
    row.addEventListener("click", function (e) {
      if (e.target.closest("button[data-tag-action]")) return;
      var target = document.getElementById(row.getAttribute("data-tree"));
      if (!target) return;
      var open = target.classList.toggle("open");
      row.setAttribute("aria-expanded", open ? "true" : "false");
    });
  });

  document.addEventListener("click", async function (e) {
    var btn = e.target.closest("[data-action]");
    if (!btn) return;
    var action = btn.getAttribute("data-action");

    try {
      if (action === "tag-add") {
        var parentId = btn.getAttribute("data-parent-id");
        var name = prompt(parentId ? "新增子标签名称：" : "新增顶层标签组名称：");
        if (!name) return;
        await api("/api/tags", { name: name, parentId: parentId ? Number(parentId) : null });
        toast("标签已创建"); refresh();
      }

      if (action === "tag-rename") {
        var name2 = prompt("重命名为：", btn.getAttribute("data-name"));
        if (!name2 || name2 === btn.getAttribute("data-name")) return;
        await api("/api/tags/" + btn.getAttribute("data-id"), { name: name2 }, "PATCH");
        toast("已重命名"); refresh();
      }

      if (action === "tag-move") {
        var target3 = prompt("移动到哪个标签之下？填其 ID（留空移到顶层）：\n" + btn.getAttribute("data-ids"));
        if (target3 === null) return;
        await api("/api/tags/" + btn.getAttribute("data-id"),
          { parentId: target3.trim() ? Number(target3.trim()) : null }, "PATCH");
        toast("已移动"); refresh();
      }

      if (action === "tag-delete") {
        if (!confirm("删除该标签？其子标签将上移一级，关联关系解除。")) return;
        await api("/api/tags/" + btn.getAttribute("data-id"), undefined, "DELETE");
        toast("已删除"); refresh();
      }

      if (action === "entry-status") {
        await api("/api/entries/" + btn.getAttribute("data-id") + "/status",
          { status: btn.getAttribute("data-status") }, "PATCH");
        toast("状态已更新"); refresh();
      }

      if (action === "entry-delete") {
        if (!confirm("物理删除该条目？此操作不可恢复。")) return;
        await api("/api/entries/" + btn.getAttribute("data-id"), undefined, "DELETE");
        toast("已删除"); refresh();
      }

      if (action === "comment-delete") {
        if (!confirm("删除该评论？")) return;
        await api("/api/comments/" + btn.getAttribute("data-id"), undefined, "DELETE");
        toast("已删除"); refresh();
      }

      if (action === "user-disable") {
        var status = btn.getAttribute("data-status") === "active" ? "disabled" : "active";
        await api("/api/admin/users/" + btn.getAttribute("data-id") + "/status", { status: status }, "PATCH");
        toast("账号状态已更新"); refresh();
      }
    } catch (err) {
      toast(err.message);
    }
  });

  var userAddForm = document.getElementById("user-add-form");
  if (userAddForm) {
    userAddForm.addEventListener("submit", function (e) {
      e.preventDefault();
      api("/api/admin/users", {
        username: userAddForm.username.value.trim(),
        password: userAddForm.password.value,
        role: userAddForm.role.value,
      })
        .then(function () { toast("账号已创建"); refresh(); })
        .catch(function (err) { toast(err.message); });
    });
  }

  var aiKeyForm = document.getElementById("ai-key-form");
  if (aiKeyForm) {
    aiKeyForm.addEventListener("submit", function (e) {
      e.preventDefault();
      api("/api/admin/ai-key", { key: aiKeyForm.key.value.trim() }, "PUT")
        .then(function () { toast("AI 录入密钥已更新"); refresh(); })
        .catch(function (err) { toast(err.message); });
    });
  }

  document.querySelectorAll("form.source-config").forEach(function (form) {
    form.addEventListener("submit", function (e) {
      e.preventDefault();
      var id = form.getAttribute("data-id");
      api("/api/admin/sources/" + id, {
        name: form.name.value,
        url: form.url.value,
        adapter: form.adapter.value,
        cron_expr: form.cron_expr.value,
        enabled: form.enabled.checked,
      }, "PATCH")
        .then(function () { toast("内容源已保存"); refresh(); })
        .catch(function (err) { toast(err.message); });
    });
  });

  document.querySelectorAll("[data-source-run]").forEach(function (btn) {
    btn.addEventListener("click", async function () {
      var id = btn.getAttribute("data-source-run");
      btn.disabled = true;
      try {
        var json = await api("/api/admin/sources/" + id + "/run", {});
        var s = json.data;
        toast(s.error
          ? "拉取失败：" + s.error
          : "完成：发现 " + s.found + " · 新增 " + s.created + " · 跳过 " + s.skipped);
        if (!s.error) refresh();
      } catch (err) {
        toast(err.message);
      } finally {
        btn.disabled = false;
      }
    });
  });

  document.querySelectorAll("[data-source-runs]").forEach(function (btn) {
    btn.addEventListener("click", async function () {
      var box = document.getElementById("runs-" + btn.getAttribute("data-source-runs"));
      if (!box) return;
      if (!box.hidden) { box.hidden = true; return; }
      try {
        var json = await api("/api/admin/sources/" + btn.getAttribute("data-source-runs") + "/runs", undefined, "GET");
        box.textContent = JSON.stringify(json.data, null, 2).slice(0, 3000);
        box.hidden = false;
      } catch (err) {
        toast(err.message);
      }
    });
  });

  var sourceAddForm = document.getElementById("source-add-form");
  if (sourceAddForm) {
    sourceAddForm.addEventListener("submit", function (e) {
      e.preventDefault();
      api("/api/admin/sources", {
        name: sourceAddForm.name.value.trim(),
        url: sourceAddForm.url.value.trim(),
        adapter: sourceAddForm.adapter.value,
        cron_expr: sourceAddForm.cron_expr.value.trim(),
      })
        .then(function () { toast("拉取源已创建"); refresh(); })
        .catch(function (err) { toast(err.message); });
    });
  }
})();