const Dashboard = {
  async render() { return '<div class="loading"><i class="fas fa-spinner"></i></div>'; },

  async mount() {
    const ct = document.getElementById('page-content');
    document.getElementById('page-title').textContent = '控制台';
    document.getElementById('page-actions').innerHTML = `
      <button class="btn btn-p btn-sm" onclick="App.navigate('tickets','create?type=report')"><i class="fas fa-flag"></i> 举报</button>
      <button class="btn btn-s btn-sm" onclick="App.navigate('tickets','create?type=suggestion')"><i class="fas fa-lightbulb"></i> 建议</button>
      <button class="btn btn-w btn-sm" onclick="App.navigate('tickets','create?type=appeal')"><i class="fas fa-gavel"></i> 申诉</button>
    `;

    try {
      const [stats, exports] = await Promise.all([
        API.get('/tickets/stats'),
        Auth.isOwner() ? API.get('/export/dashboard') : null,
      ]);
      const bans = Auth.isAdmin() ? await API.get('/bans/active').catch(()=>[]) : [];
      this.renderContent(ct, stats, exports, bans);
    } catch (e) { ct.innerHTML = `<div class="alert alert-e">${e.message}</div>`; }
  },

  renderContent(ct, stats, exports, bans) {
    const byStatus = stats.byStatus || {};
    const banData = bans || [];

    ct.innerHTML = `
      <div class="stats-grid">
        <div class="stat-card"><div class="si" style="background:#eef2ff;color:var(--p)"><i class="fas fa-ticket-alt"></i></div><div><div class="sv">${stats.total}</div><div class="sl">工单总数</div></div></div>
        <div class="stat-card"><div class="si" style="background:#fef3c7;color:#d97706"><i class="fas fa-clock"></i></div><div><div class="sv">${byStatus.pending || 0}</div><div class="sl">待处理</div></div></div>
        <div class="stat-card"><div class="si" style="background:#ede9fe;color:#7c3aed"><i class="fas fa-cogs"></i></div><div><div class="sv">${byStatus.processing || 0}</div><div class="sl">处理中</div></div></div>
        <div class="stat-card"><div class="si" style="background:#d1fae5;color:var(--s)"><i class="fas fa-check-circle"></i></div><div><div class="sv">${byStatus.resolved || 0}</div><div class="sl">已解决</div></div></div>
      </div>

      ${Auth.isAdmin() ? `
      <div class="card"><div class="card-h"><i class="fas fa-ban"></i> 封禁列表 ${Auth.isOwner() ? `<button class="btn btn-p btn-sm" onclick="Dashboard.showAddBan()">添加</button>`:''}</div>
        <div class="card-b">${banData.length === 0 ? '<span class="tm">暂无封禁记录</span>' : `<table><thead><tr><th>玩家</th><th>类型</th><th>原因</th><th>时长</th><th>时间</th></tr></thead><tbody>${banData.map(b=>`<tr><td>${U.esc(b.player_name)}</td><td>${b.type==='ban'?'封禁':b.type==='mute'?'禁言':'其他'}</td><td class="ts">${U.esc(b.reason||'')}</td><td>${b.duration||'永久'}</td><td class="ts">${U.date(b.created_at)}</td></tr>`).join('')}</tbody></table>`}</div>
      </div>` : ''}

      ${Auth.isOwner() && exports ? `
      <div class="grid-2">
        <div class="card"><div class="card-h">类型分布</div><div class="card-b">
          ${(exports.byType||[]).map(r => `<div class="detail-row"><span class="lbl">${U.TYPE[r.type]||r.type}</span><span class="val fb">${r.c} 条</span></div>`).join('')}
        </div></div>
        <div class="card"><div class="card-h">状态分布</div><div class="card-b">
          ${(exports.byStatus||[]).map(r => `<div class="detail-row"><span class="lbl">${U.STATUS[r.status]||r.status}</span><span class="val fb">${r.c} 条</span></div>`).join('')}
        </div></div>
      </div>
      ${exports.monthly?.length ? `
      <div class="card"><div class="card-h">月度趋势</div><div class="card-b table-wrap"><table><thead><tr><th>月份</th><th>数量</th></tr></thead><tbody>${exports.monthly.map(m=>`<tr><td>${m.m}</td><td>${m.c}</td></tr>`).join('')}</tbody></table></div></div>` : ''}
      ` : ''}
      <p class="tm ts tc">提示: 可在"工单列表"中查看和管理所有工单</p>
    `;
  },

  showAddBan() {
    U.modal('添加封禁', `
      <form id="ban-form">
        <div class="grid-2"><div class="form-group"><label>玩家名 *</label><input id="ban-name" required></div><div class="form-group"><label>UID</label><input id="ban-uid"></div></div>
        <div class="grid-2"><div class="form-group"><label>来源</label><select id="ban-source"><option value="">未知</option><option value="netease">网易端</option><option value="skin">皮肤站</option></select></div><div class="form-group"><label>类型</label><select id="ban-type" onchange="Dashboard.checkMinDuration()"><option value="ban">封禁</option><option value="mute">禁言</option><option value="warn">警告</option></select></div></div>
        <div class="grid-2"><div class="form-group"><label>时长</label><select id="ban-dur"><option value="">永久</option><option value="3天">3天</option><option value="7天">7天</option><option value="30天">30天</option></select></div></div>
        <div class="form-group"><label>原因</label><textarea id="ban-reason" rows="2"></textarea></div>
        <div class="modal-f"><button type="button" class="btn btn-o" data-action="App:closeModal">取消</button><button type="submit" class="btn btn-p">添加</button></div>
      </form>
    `);
    document.getElementById('ban-form').onsubmit = async e => {
      e.preventDefault();
      try {
          await API.post('/bans', { player_name: document.getElementById('ban-name').value, player_uid: document.getElementById('ban-uid').value, source: document.getElementById('ban-source').value, type: document.getElementById('ban-type').value, duration: document.getElementById('ban-dur').value, reason: document.getElementById('ban-reason').value });
        App.closeModal(); this.mount();
      } catch(ex) { alert(ex.message); }
    };
    setTimeout(() => Dashboard.checkMinDuration(), 100);
  },

  async checkMinDuration() {
    const name = document.getElementById('ban-name')?.value;
    const uid = document.getElementById('ban-uid')?.value;
    const type = document.getElementById('ban-type')?.value;
    if (!name && !uid) return;
    try {
      const r = await API.get('/bans/min-duration?player_name='+name+'&player_uid='+uid+'&type='+type);
      const sel = document.getElementById('ban-dur');
      if (r.minDays > 0) {
        sel.innerHTML = `<option value="${r.minDays}天">≥ ${r.minDays}天</option><option value="30天">30天</option><option value="">永久</option>`;
      } else {
        sel.innerHTML = `<option value="">永久</option><option value="1天">1天</option><option value="3天">3天</option><option value="7天">7天</option><option value="30天">30天</option>`;
      }
    } catch {}
  }
};