(function () {
  'use strict';

  var Api = function () { return window.AdminApi; };
  var Ui = function () { return window.AdminUi; };
  var I = function () { return window.AdminI18n; };
  var State = function () { return window.AdminState; };
  var Filter = function () { return window.AdminFilter; };
  var Router = function () { return window.AdminRouter; };

  var ACTION_OPTS = [
    { v: '', l: '全部操作' },
    { v: 'users.setStatus', l: '变更用户状态' },
    { v: 'users.create', l: '创建用户' },
    { v: 'users.update', l: '编辑用户' },
    { v: 'users.delete', l: '删除用户' },
    { v: 'users.setPassword', l: '重置密码' },
    { v: 'users.setSubscription', l: '设置会员' },
    { v: 'users.detail', l: '查看用户详情' },
    { v: 'orders.detail', l: '查看订单详情' },
    { v: 'orders.cancel', l: '取消订单' },
    { v: 'orders.refundApprove', l: '通过退款' },
    { v: 'orders.refundReject', l: '拒绝退款' },
    { v: 'plans.upsert', l: '编辑套餐' },
    { v: 'settings.set', l: '修改系统设置' },
    { v: 'settings.set_batch', l: '批量修改设置' },
    { v: 'payment.key.upload', l: '上传支付密钥' },
  ];

  function buildQuery() {
    var st = State().audits;
    var q = 'audits?page=' + st.page + '&size=' + st.size;
    if (st.q) q += '&q=' + encodeURIComponent(st.q);
    if (st.from) q += '&from=' + encodeURIComponent(st.from);
    if (st.to) q += '&to=' + encodeURIComponent(st.to);
    if (st.action) q += '&action=' + encodeURIComponent(st.action);
    return q;
  }

  function actionOptions(selected) {
    return ACTION_OPTS.map(function (o) {
      return '<option value="' + o.v + '"' + (selected === o.v ? ' selected' : '') + '>' + o.l + '</option>';
    }).join('');
  }

  function formatContext(ctx) {
    if (!ctx) return '';
    var body;
    try {
      body = '<pre class="soon-admin-code">' + I().esc(JSON.stringify(JSON.parse(ctx), null, 2)) + '</pre>';
    } catch (e) {
      body = '<div class="soon-audit-item__context">' + I().esc(ctx) + '</div>';
    }
    return '<details class="soon-audit-item__details"><summary>查看上下文</summary>' + body + '</details>';
  }

  function renderFilterBar(st) {
    return Filter().bar(
      Filter().field('关键词', Filter().searchInput('auditQ', st.q, '操作、目标或管理员')) +
      Filter().field('操作类型', Filter().select('auditAction', actionOptions(st.action))) +
      Ui().filterDateField('auditFrom', '从', st.from) +
      Ui().filterDateField('auditTo', '至', st.to),
      '<button type="button" class="soon-btn soon-btn--sm" id="auditSearchBtn">查询</button>' +
      '<button type="button" class="soon-btn soon-btn--sm soon-btn--ghost" id="auditResetBtn">重置</button>'
    );
  }

  function bindFilters(st) {
    var searchBtn = Ui().el('auditSearchBtn');
    var resetBtn = Ui().el('auditResetBtn');
    var qInput = Ui().el('auditQ');
    if (searchBtn) {
      searchBtn.onclick = function () {
        st.q = qInput ? qInput.value.trim() : '';
        st.action = Ui().el('auditAction').value;
        st.from = Ui().el('auditFrom').value;
        st.to = Ui().el('auditTo').value;
        if (st.from && st.to && st.from > st.to) {
          soonToast('开始日期不能晚于结束日期', 'warn');
          return;
        }
        st.page = 1;
        Router().syncQuery();
        render();
      };
    }
    if (qInput) {
      qInput.onkeydown = function (e) {
        if (e.key === 'Enter' && searchBtn) searchBtn.click();
      };
    }
    if (resetBtn) {
      resetBtn.onclick = function () {
        State().audits = { page: 1, size: 50, q: '', from: '', to: '', action: '' };
        Router().syncQuery();
        render();
      };
    }
  }

  function renderTimeline(items) {
    if (!items.length) {
      return Ui().emptyBlock('暂无审计记录', '调整筛选条件或等待管理员操作产生日志', '');
    }
    return items.map(function (a) {
      return '<div class="soon-audit-item"><div class="soon-audit-item__title">' +
        I().esc(I().tAction(a.action)) + ' · ' + I().esc(a.target) + '</div>' +
        '<div class="soon-audit-item__meta">' + I().esc(a.admin_email || '') + ' · ' +
        I().formatDateTime(a.created_at) + '</div>' + formatContext(a.context) + '</div>';
    }).join('');
  }

  function render() {
    var panel = Ui().el('panel-audits');
    if (!panel) return;
    var st = State().audits;
    var header = Ui().pageHeader('审计日志', '管理员操作记录，支持按操作类型与时间筛选');
    panel.innerHTML = '<div class="soon-admin-page">' + header + renderFilterBar(st) + Ui().skeletonTable() + '</div>';

    Api().get(buildQuery()).then(function (j) {
      if (!j) {
        panel.innerHTML = '<div class="soon-admin-page">' + header + renderFilterBar(st) +
          Ui().listError('审计日志加载失败', 'auditsListRetry') + '</div>';
        bindFilters(st);
        Ui().el('auditsListRetry').onclick = render;
        return;
      }
      var items = j.data.items || [];
      panel.innerHTML = '<div class="soon-admin-page">' + header + renderFilterBar(st) +
        '<div class="soon-admin-card"><div class="soon-audit-timeline">' + renderTimeline(items) + '</div></div>' +
        Ui().pagerHtml(j.data.page, j.data.size, j.data.total) + '</div>';
      bindFilters(st);
      Ui().bindPager(panel, j.data.page, j.data.size, j.data.total, function (p, newSize) {
        st.page = p;
        if (newSize) st.size = newSize;
        Router().syncQuery();
        render();
      });
    });
  }

  window.AdminViews = window.AdminViews || {};
  window.AdminViews.audits = { render: render };
})();