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(()=>[]) : [];
      const identities = await API.get('/auth/identities').catch(()=>[]);
      this.renderContent(ct, stats, exports, bans, identities);
      // 渲染完成后将来源 code 替换为动态标签
      U.sources().then(() => {
        ct.querySelectorAll('[data-src]').forEach(el => {
          const code = el.dataset.src;
          const hit = (U._sourcesCache||[]).find(s => s.code === code);
          el.textContent = hit ? hit.label : (code || '-');
        });
      }).catch(()=>{});
    } catch (e) { ct.innerHTML = `<div class="alert alert-e">${e.message}</div>`; }
  },

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

    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>` : ''}

      <div class="card"><div class="card-h"><i class="fas fa-id-card"></i> 我的身份 ${idents.length < 2 ? `<button class="btn btn-p btn-sm" onclick="Dashboard.showAddIdentity()">绑定${idents.length === 1 ? '另一来源' : '身份'}</button>` : ''}</div>
        <div class="card-b">
          ${idents.length === 0 ? '<span class="tm">暂无身份，点击右上角绑定</span>' : `<table><thead><tr><th>来源</th><th>游戏名</th><th>UID</th><th>绑定时间</th><th>操作</th></tr></thead><tbody>${idents.map(it=>`<tr>
            <td><span class="badge bg-admin" data-src="${U.esc(it.source)}">${U.esc(it.source||'-')}</span></td>
            <td>${U.esc(it.game_name)}</td><td class="ts">${U.esc(it.game_uid||'-')}</td>
            <td class="ts">${U.date(it.created_at)}</td>
            <td>${idents.length > 1 ? `<button class="btn btn-d btn-sm" onclick="Dashboard.removeIdentity(${it.id})"><i class="fas fa-unlink"></i> 解绑</button>` : '<span class="tm ts">主身份</span>'}</td>
          </tr>`).join('')}</tbody></table>`}
          <p class="tm ts mt-4"><i class="fas fa-info-circle"></i> 同一账号可绑定多个来源身份，提交工单时选择使用哪个身份。</p>
        </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></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>
    `);
    U.sources().then(list => {
      const sel = document.getElementById('ban-source');
      if (sel) sel.innerHTML = '<option value="">未知</option>' + list.map(s => `<option value="${U.esc(s.code)}">${U.esc(s.label)}</option>`).join('');
    }).catch(()=>{});
    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);
  },

  showAddIdentity() {
    U.modal('绑定身份', `
      <form id="ident-form">
        <div class="form-group"><label>来源</label><select id="ident-source"><option value="">加载中...</option></select></div>
        <div class="form-group"><label>游戏名 *</label><input id="ident-name" required placeholder="Minecraft ID"></div>
        <div class="form-group" id="ident-uid-group" style="display:none"><label>UID(可选)</label><input id="ident-uid" placeholder="选填"></div>
        <div class="form-group hidden" id="ident-skin-group">
          <label>皮肤站地址</label>
          <div style="display:flex;gap:6px">
            <input id="ident-site" placeholder="https://littleskin.cn" style="flex:1">
            <button type="button" class="btn btn-o btn-sm" id="ident-fetch-btn" style="flex:0 0 auto;white-space:nowrap"><i class="fas fa-magnifying-glass"></i> 获取UUID</button>
          </div>
          <span class="help">输入皮肤站用户名后点「获取UUID」，自动填入下方UID</span>
        </div>
        <div id="ident-err" class="alert alert-e hidden"></div>
        <div class="modal-f"><button type="button" class="btn btn-o" onclick="App.closeModal()">取消</button><button type="submit" class="btn btn-p">绑定</button></div>
      </form>
    `);
    // 动态加载来源
    U.sources().then(async list => {
      const sel = document.getElementById('ident-source');
      sel.innerHTML = list.length
        ? list.map(s => `<option value="${U.esc(s.code)}">${U.esc(s.label)}</option>`).join('')
        : '<option value="">不指定</option>';
      toggleSource();
    }).catch(()=>{});
    const toggleSource = () => {
      const src = document.getElementById('ident-source').value;
      const isSkin = src === 'skin';
      document.getElementById('ident-uid-group').style.display = isSkin ? 'none' : '';
      document.getElementById('ident-skin-group').classList.toggle('hidden', !isSkin);
    };
    document.getElementById('ident-source').onchange = toggleSource;
    // 自动带出站点配置的皮肤站地址
    API.get('/settings/skin-site').then(r => {
      if (r.site && !document.getElementById('ident-site').value) document.getElementById('ident-site').value = r.site;
    }).catch(()=>{});
    document.getElementById('ident-fetch-btn').onclick = async () => {
      const site = document.getElementById('ident-site').value.trim();
      const name = document.getElementById('ident-name').value.trim();
      if (!site) return alert('请填写皮肤站地址');
      if (!name) return alert('请先填写游戏名(皮肤站用户名)');
      const btn = document.getElementById('ident-fetch-btn');
      btn.disabled = true; btn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> 查询中';
      try {
        const r = await API.get(`/settings/uuid-lookup?site=${encodeURIComponent(site)}&name=${encodeURIComponent(name)}`);
        if (r.found) {
          document.getElementById('ident-uid').value = r.uuid;
          alert('已获取 UUID: ' + r.uuid);
        } else {
          alert(r.message || '未找到该用户名');
        }
      } catch (ex) { alert(ex.message); }
      btn.disabled = false; btn.innerHTML = '<i class="fas fa-magnifying-glass"></i> 获取UUID';
    };
    document.getElementById('ident-form').onsubmit = async e => {
      e.preventDefault();
      try {
        await API.post('/auth/identities', {
          source: document.getElementById('ident-source').value,
          game_name: document.getElementById('ident-name').value,
          game_uid: document.getElementById('ident-uid').value,
        });
        App.closeModal();
        this.mount();
      } catch (ex) {
        const el = document.getElementById('ident-err');
        el.textContent = ex.message;
        el.classList.remove('hidden');
      }
    };
  },

  async removeIdentity(id) {
    if (!await U.confirm('确认解绑该身份？')) return;
    try { await API.delete(`/auth/identities/${id}`); this.mount(); }
    catch (ex) { alert(ex.message); }
  },

  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 {}
  }
};