Router.register('/shipments/summary', async () => {
  setTimeout(async () => {
    const queryBtn = document.getElementById('summary-query-btn');
    const exportBtn = document.getElementById('summary-export-btn');
    const startDateInput = document.getElementById('start-date');
    const endDateInput = document.getElementById('end-date');
    const resultDiv = document.getElementById('summary-result');

    // 设置默认日期为当前月份
    const now = new Date();
    const firstDay = new Date(now.getFullYear(), now.getMonth(), 1);
    const lastDay = new Date(now.getFullYear(), now.getMonth() + 1, 0);
    
    if (startDateInput) {
      startDateInput.value = firstDay.toISOString().split('T')[0];
    }
    if (endDateInput) {
      endDateInput.value = lastDay.toISOString().split('T')[0];
    }

    const performQuery = async () => {
      const startDate = startDateInput?.value;
      const endDate = endDateInput?.value;

      if (!startDate || !endDate) {
        resultDiv.innerHTML = '<div class="error">请选择开始和结束日期</div>';
        return;
      }

      try {
        resultDiv.innerHTML = '<div>查询中...</div>';
        
        const res = await fetch(`/api/shipments/summary?start=${encodeURIComponent(startDate)}&end=${encodeURIComponent(endDate)}`, {
          credentials: 'include'
        });
        const data = await res.json();
        
        if (data.records && data.records.length > 0) {
          const totalQty = data.records.reduce((sum, r) => sum + (r.qty || 0), 0);
          
          const tableRows = data.records.map(record => `
            <tr>
              <td>${record.date}</td>
              <td>${record.qty}</td>
              <td>${record.receiver || '-'}</td>
              <td>${record.ts || '-'}</td>
            </tr>
          `).join('');
          
          resultDiv.innerHTML = `
            <div style="margin-bottom:16px;padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:8px">
              <div style="display:flex;align-items:center;gap:16px">
                <div>
                  <div style="color:var(--text-2);font-size:14px">查询时间段</div>
                  <div style="font-weight:600;margin-top:4px">${startDate} 至 ${endDate}</div>
                </div>
                <div style="margin-left:auto">
                  <div style="color:var(--text-2);font-size:14px">总出货数量</div>
                  <div style="font-weight:600;font-size:24px;color:var(--primary);margin-top:4px">${totalQty}</div>
                </div>
              </div>
            </div>
            
            <div style="max-height:60vh;overflow-y:auto;overflow-x:auto;border:1px solid var(--border);border-radius:8px;background:var(--surface)">
              <table class="table" style="margin:0">
                <thead style="position:sticky;top:0;z-index:1;background:var(--surface)">
                  <tr>
                    <th>发货日期</th>
                    <th>数量</th>
                    <th>收货方</th>
                    <th>录入时间</th>
                  </tr>
                </thead>
                <tbody>
                  ${tableRows}
                </tbody>
              </table>
            </div>
          `;
        } else {
          resultDiv.innerHTML = `
            <div class="result-card error">
              <div class="result-title">未找到记录</div>
              <div class="result-item">该时间段内没有发货记录</div>
            </div>
          `;
        }
      } catch (e) {
        resultDiv.innerHTML = `<div class="error">查询失败：${e.message}</div>`;
      }
    };

    const performExport = async () => {
      const startDate = startDateInput?.value;
      const endDate = endDateInput?.value;

      if (!startDate || !endDate) {
        alert('请选择开始和结束日期');
        return;
      }

      try {
        exportBtn.disabled = true;
        exportBtn.textContent = '导出中...';
        
        const url = `/api/shipments/export?start=${encodeURIComponent(startDate)}&end=${encodeURIComponent(endDate)}`;
        
        // 使用 fetch 下载文件
        const res = await fetch(url, {
          credentials: 'include'
        });
        
        if (!res.ok) {
          const error = await res.json();
          throw new Error(error.error || '导出失败');
        }
        
        // 获取文件名
        const contentDisposition = res.headers.get('Content-Disposition');
        let filename = `发货记录_${startDate}_至_${endDate}.xlsx`;
        if (contentDisposition) {
          const matches = /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/.exec(contentDisposition);
          if (matches && matches[1]) {
            filename = matches[1].replace(/['"]/g, '');
          }
        }
        
        // 下载文件
        const blob = await res.blob();
        const downloadUrl = window.URL.createObjectURL(blob);
        const a = document.createElement('a');
        a.href = downloadUrl;
        a.download = filename;
        document.body.appendChild(a);
        a.click();
        window.URL.revokeObjectURL(downloadUrl);
        document.body.removeChild(a);
        
        alert('导出成功！');
      } catch (e) {
        alert('导出失败：' + e.message);
      } finally {
        exportBtn.disabled = false;
        exportBtn.textContent = '导出Excel';
      }
    };

    queryBtn?.addEventListener('click', performQuery);
    exportBtn?.addEventListener('click', performExport);
    
    // 自动执行一次查询
    performQuery();
  }, 0);

  return `
    <style>
      #shipment-summary-page {
        padding: 20px;
        background: var(--bg);
      }
      #shipment-summary-page .page-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 20px;
      }
      #shipment-summary-page h1 {
        margin: 0;
        font-size: 24px;
        color: var(--text);
      }
      #shipment-summary-page .content-area {
        background: var(--surface);
        border-radius: 8px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
      }
      #shipment-summary-page .query-section {
        padding: 20px;
        border-bottom: 1px solid var(--border);
      }
      #shipment-summary-page .result-section {
        padding: 20px;
      }
      #shipment-summary-page .date-row {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
        margin-bottom: 16px;
      }
      @media (max-width: 768px) {
        #shipment-summary-page .date-row {
          grid-template-columns: 1fr;
        }
      }
    </style>
    
    <div id="shipment-summary-page">
      <div class="page-header">
        <h1>发货汇总信息查询</h1>
      </div>
      
      <div class="content-area">
        <div class="query-section">
          <div class="date-row">
            <div class="field">
              <label>开始日期</label>
              <input 
                id="start-date" 
                type="date" 
                class="input"
              />
            </div>
            <div class="field">
              <label>结束日期</label>
              <input 
                id="end-date" 
                type="date" 
                class="input"
              />
            </div>
          </div>
          
          <div class="actions" style="display:flex;gap:12px">
            <button class="btn btn-primary" id="summary-query-btn">查询</button>
            <button class="btn" id="summary-export-btn" style="background:#10b981;color:white">导出Excel</button>
          </div>
        </div>

        <div class="result-section">
          <div id="summary-result"></div>
        </div>
      </div>
    </div>
  `;
});