// 期初库存管理
(() => {
  let stockList = [];
  let currentPage = 1;
  const pageSize = 20;
  let editingId = null;
  let currentFactory = '';

  Router.register('/plan-mgmt/initial-stock', async () => {
    const html = `
      <style>
        #initial-stock-page {
          padding: 20px;
          background: var(--bg);
        }
        
        #initial-stock-page .page-header {
          display: flex;
          justify-content: space-between;
          align-items: center;
          margin-bottom: 20px;
        }
        
        #initial-stock-page h1 {
          margin: 0;
          font-size: 24px;
        }
        
        #initial-stock-page .content-area {
          background: white;
          border-radius: 8px;
          box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        #initial-stock-page .filter-section {
          padding: 20px;
          display: flex;
          gap: 15px;
          align-items: center;
          justify-content: space-between;
          border-bottom: 1px solid var(--border);
        }
        
        #initial-stock-page .table-wrapper {
          overflow-x: auto;
        }
        
        #initial-stock-page table {
          width: 100%;
          border-collapse: collapse;
          margin: 0;
        }
        
        #initial-stock-page thead {
          background: var(--border);
          position: sticky;
          top: 0;
          z-index: 10;
        }
        
        #initial-stock-page th {
          padding: 8px 12px;
          text-align: left;
          font-weight: 600;
          color: var(--text);
          border-bottom: 2px solid var(--border);
          font-size: 14px;
          white-space: nowrap;
        }
        
        #initial-stock-page td {
          padding: 8px 12px;
          border-bottom: 1px solid var(--border);
          color: var(--text);
          font-size: 14px;
        }
        
        #initial-stock-page tbody tr:hover {
          background: var(--hover);
        }
        
        #initial-stock-page .text-center {
          text-align: center;
        }
      </style>
      
      <div id="initial-stock-page">
        <div class="page-header">
          <h1 style="margin: 0; font-size: 24px;">期初库存管理</h1>
          <div class="page-actions" style="margin-top: 16px;">
            <button id="add-stock-btn" class="btn btn-primary" style="margin-right: 10px;">新增库存</button>
            <button id="import-stock-btn" class="btn btn-secondary" style="margin-right: 10px;">导入 Excel</button>
            <button id="download-template-btn" class="btn btn-secondary" style="margin-right: 10px;">下载模板</button>
            <button id="batch-delete-btn" class="btn btn-danger">批量删除</button>
          </div>
        </div>
      
        <div class="content-area">
          <div class="filter-section" style="padding: 20px; display: flex; gap: 15px; align-items: center; justify-content: flex-start;">
            <select id="factory-filter" class="input" style="width: 200px;" onchange="InitialStock.filterByFactory()">
              <option value="">全部工厂</option>
            </select>
            <input type="text" id="search-keyword" class="input" placeholder="搜索物料编码、名称或供应商" style="flex: 1; max-width: 400px;" />
            <button class="btn btn-secondary" onclick="InitialStock.search()">搜索</button>
            <button class="btn btn-secondary" onclick="InitialStock.resetSearch()">重置</button>
          </div>
          
          <div class="table-wrapper">
            <table>
              <thead>
                <tr>
                  <th style="width: 40px;"><label class="custom-checkbox"><input type="checkbox" id="select-all" onchange="InitialStock.toggleSelectAll(this)" /><span class="checkmark"></span></label></th>
                  <th>物料编码</th>
                  <th>物料名称</th>
                  <th>库存数量</th>
                  <th>单位</th>
                  <th>最小包装</th>
                  <th>供应商</th>
                  <th>工厂</th>
                  <th>备注</th>
                  <th>更新时间</th>
                  <th>操作</th>
                </tr>
              </thead>
              <tbody id="stock-list">
                <tr><td colspan="10" class="text-center">加载中...</td></tr>
              </tbody>
            </table>
          </div>
          
          <div class="pagination" id="pagination" style="padding: 20px; display: flex; justify-content: center; gap: 8px;"></div>
        </div>
      </div>
      
      <!-- Excel导入弹窗 -->
      <div id="import-excel-modal" class="modal" style="display:none;">
        <div class="modal-content" style="max-width: 600px;">
          <div class="modal-header">
            <h2>导入期初库存清单</h2>
            <button class="modal-close" onclick="InitialStock.closeImportModal()">&times;</button>
          </div>
          <div class="modal-body">
            <div class="field">
              <label>默认工厂（可选）</label>
              <div style="display: flex; gap: 5px;">
                <input type="text" id="default-factory" class="input" placeholder="不填写则使用Excel中的工厂值" style="flex: 1;" />
                <select id="default-factory-select" onchange="document.getElementById('default-factory').value = this.value;" style="width: 120px;">
                  <option value="">快速选择</option>
                </select>
              </div>
              <div style="margin-top: 4px; font-size: 12px; color: var(--text-3);">
                如果Excel中工厂列为空，将使用此默认值；如果都未填写，则标记为"未指定"
              </div>
            </div>
            <div class="field">
              <label>选择Excel文件 <span style="color: var(--danger);">*</span></label>
              <input type="file" id="excel-file" class="input" accept=".xlsx,.xls,.csv" />
              <div style="margin-top: 8px; font-size: 12px; color: var(--text-3);">
                支持 .xlsx、.xls 和 .csv 格式，文件大小不超过 10MB
              </div>
            </div>
            
            <div style="margin-top: 16px; padding: 12px; background: var(--surface); border-radius: 8px; border: 1px solid var(--border);">
              <div style="font-size: 14px; color: var(--text-2); margin-bottom: 12px;">
                <strong>Excel文件格式要求：</strong>
              </div>
              <table style="width: 100%; font-size: 13px; border-collapse: collapse;">
                <thead>
                  <tr style="background: var(--surface-2);">
                    <th style="padding: 8px; text-align: left; border: 1px solid var(--border);">列名</th>
                    <th style="padding: 8px; text-align: left; border: 1px solid var(--border);">说明</th>
                    <th style="padding: 8px; text-align: left; border: 1px solid var(--border);">必填</th>
                  </tr>
                </thead>
                <tbody>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">物料编码</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">物料编码</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✓</td>
                  </tr>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">物料名称</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">物料名称</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✓</td>
                  </tr>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">库存数量</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">当前库存数量</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✓</td>
                  </tr>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">单位</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">单位（如：pcs）</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✓</td>
                  </tr>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">最小包装</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">最小包装数量</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✓</td>
                  </tr>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">供应商</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">供应商名称</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✓</td>
                  </tr>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">工厂</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">工厂名称（可输入自定义名称，如：友辉、铨宝）</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✗</td>
                  </tr>
                  <tr>
                    <td style="padding: 6px; border: 1px solid var(--border); font-family: monospace;">备注</td>
                    <td style="padding: 6px; border: 1px solid var(--border;">备注信息</td>
                    <td style="padding: 6px; border: 1px solid var(--border); text-align: center;">✗</td>
                  </tr>
                </tbody>
              </table>
            </div>
          </div>
          <div class="modal-footer">
            <button class="btn btn-secondary" onclick="InitialStock.closeImportModal()">取消</button>
            <button class="btn btn-primary" onclick="InitialStock.importExcel()">导入</button>
          </div>
        </div>
      </div>
      
      <!-- 新增/编辑库存弹窗 -->
      <div id="stock-modal" class="modal" style="display:none;">
        <div class="modal-content" style="max-width: 500px;">
          <div class="modal-header">
            <h2 id="modal-title">新增期初库存</h2>
            <button class="modal-close" onclick="InitialStock.closeModal()">&times;</button>
          </div>
          <div class="modal-body">
            <form id="stock-form">
              <div class="field">
                <label>物料编码 <span style="color: var(--danger);">*</span></label>
                <input type="text" id="material-code" class="input" required />
              </div>
              <div class="field">
                <label>物料名称 <span style="color: var(--danger);">*</span></label>
                <input type="text" id="material-name" class="input" required />
              </div>
              <div style="display: grid; grid-template-columns: 1fr 1fr; gap: 16px;">
                <div class="field">
                  <label>库存数量 <span style="color: var(--danger);">*</span></label>
                  <input type="number" id="stock-qty" class="input" min="0" value="0" required />
                </div>
                <div class="field">
                  <label>单位</label>
                  <input type="text" id="unit" class="input" value="pcs" />
                </div>
              </div>
              <div style="display: grid; grid-template-columns: 1fr 1fr; gap: 16px;">
                <div class="field">
                  <label>最小包装</label>
                  <input type="number" id="min-package" class="input" min="1" value="1" />
                </div>
                <div class="field">
                  <label>供应商</label>
                  <input type="text" id="supplier" class="input" />
                </div>
              </div>
              <div class="field">
                <label>工厂</label>
                <div style="display: flex; gap: 5px;">
                  <input type="text" id="factory" class="input" placeholder="请输入工厂名称" style="flex: 1;" />
                  <select id="factory-select" onchange="document.getElementById('factory').value = this.value;" style="width: 120px;">
                    <option value="">快速选择</option>
                  </select>
                </div>
              </div>
              <div class="field">
                <label>备注</label>
                <textarea id="remark" class="input" rows="2"></textarea>
              </div>
            </form>
          </div>
          <div class="modal-footer">
            <button class="btn btn-secondary" onclick="InitialStock.closeModal()">取消</button>
            <button class="btn btn-primary" onclick="InitialStock.save()">保存</button>
          </div>
        </div>
      </div>
    `;
    
    setTimeout(() => {
      document.getElementById('add-stock-btn')?.addEventListener('click', () => openModal());
      document.getElementById('import-stock-btn')?.addEventListener('click', () => showImportDialog());
      document.getElementById('download-template-btn')?.addEventListener('click', () => downloadTemplate());
      document.getElementById('batch-delete-btn')?.addEventListener('click', () => batchDelete());
      document.getElementById('search-keyword')?.addEventListener('keypress', (e) => {
        if (e.key === 'Enter') InitialStock.search();
      });
      loadList();
      loadFactories();
    }, 100);
    
    return html;
  });

  async function showImportDialog() {
    document.getElementById('excel-file').value = '';
    document.getElementById('default-factory').value = '';
    document.getElementById('import-excel-modal').style.display = 'flex';
    
    // 动态加载工厂列表
    await loadFactoriesForSelect('default-factory-select');
  }

  function closeImportModal() {
    document.getElementById('import-excel-modal').style.display = 'none';
  }

  async function importExcel() {
    const fileInput = document.getElementById('excel-file');
    const file = fileInput.files[0];
    const defaultFactory = document.getElementById('default-factory').value.trim();
    
    if (!file) {
      alert('请选择要导入的文件');
      return;
    }
    
    const formData = new FormData();
    formData.append('file', file);
    if (defaultFactory) {
      formData.append('default_factory', defaultFactory);
    }
    
    try {
      const overlay = document.getElementById('overlay');
      overlay.classList.remove('hidden');
      
      const res = await fetch('/api/initial-stock/import', {
        method: 'POST',
        body: formData,
        credentials: 'include'
      });
      
      overlay.classList.add('hidden');
      
      const data = await res.json();
      if (data.ok) {
        alert(data.message || '导入成功');
        closeImportModal();
        loadList();
        loadFactories(); // 重新加载工厂列表
      } else {
        alert(data.error || '导入失败');
      }
    } catch (err) {
      document.getElementById('overlay').classList.add('hidden');
      alert('导入失败: ' + err.message);
    }
  }

  async function loadFactories() {
    try {
      const res = await API.get('/api/factories');
      const factories = res.factories || [];
      const select = document.getElementById('factory-filter');
      if (select) {
        // 保留"全部工厂"选项，清空其他选项
        select.innerHTML = '<option value="">全部工厂</option>';
        factories.forEach(factory => {
          const option = document.createElement('option');
          option.value = factory;
          option.textContent = factory;
          select.appendChild(option);
        });
      }
    } catch (e) {
      console.error('加载工厂列表失败:', e);
    }
  }

  async function loadFactoriesForSelect(selectId) {
    try {
      const res = await API.get('/api/factories');
      const factories = res.factories || [];
      const select = document.getElementById(selectId);
      if (select) {
        const currentValue = select.value;
        const firstOption = select.options[0] ? select.options[0].outerHTML : '<option value="">快速选择</option>';
        select.innerHTML = firstOption;
        factories.forEach(factory => {
          const option = document.createElement('option');
          option.value = factory;
          option.textContent = factory;
          select.appendChild(option);
        });
        if (currentValue) {
          select.value = currentValue;
        }
      }
    } catch (e) {
      console.error('加载工厂列表失败:', e);
    }
  }

  function downloadTemplate() {
    const headers = ['物料编码', '物料名称', '库存数量', '单位', '最小包装', '供应商', '工厂', '备注'];
    const example1 = ['PCB-001', '主控PCB板', '50', 'pcs', '10', '深圳电子', '友辉', ''];
    const example2 = ['PCB-002', '电源板', '100', 'pcs', '20', '东莞电子', '铨宝', ''];
    const example3 = ['PCB-003', '显示板', '75', 'pcs', '15', '苏州电子', '新工厂', ''];
    
    const csvContent = [headers.join(','), example1.join(','), example2.join(','), example3.join(',')].join('\n');
    const blob = new Blob(['\ufeff' + csvContent], { type: 'text/csv;charset=utf-8;' });
    const link = document.createElement('a');
    link.href = URL.createObjectURL(blob);
    link.download = '期初库存导入模板.csv';
    link.click();
  }

  async function loadList() {
    try {
      let url = '/api/initial-stock';
      if (currentFactory) {
        url += `?factory=${encodeURIComponent(currentFactory)}`;
      }
      const res = await API.get(url);
      stockList = res.list || [];
      renderList();
    } catch (e) {
      console.error('加载库存列表失败:', e);
      document.getElementById('stock-list').innerHTML = '<tr><td colspan="11" class="text-center" style="color: var(--danger);">加载失败</td></tr>';
    }
  }

  function renderList() {
    const tbody = document.getElementById('stock-list');
    const keyword = (document.getElementById('search-keyword')?.value || '').toLowerCase();
    
    let filtered = stockList;
    if (keyword) {
      filtered = stockList.filter(item => 
        (item.material_code || '').toLowerCase().includes(keyword) ||
        (item.material_name || '').toLowerCase().includes(keyword) ||
        (item.supplier || '').toLowerCase().includes(keyword)
      );
    }
    
    const totalPages = Math.ceil(filtered.length / pageSize);
    const start = (currentPage - 1) * pageSize;
    const pageData = filtered.slice(start, start + pageSize);
    
    if (pageData.length === 0) {
      tbody.innerHTML = '<tr><td colspan="11" class="text-center">暂无数据</td></tr>';
    } else {
      tbody.innerHTML = pageData.map(item => `
        <tr>
          <td><label class="custom-checkbox"><input type="checkbox" class="row-checkbox" data-id="${item.id}" onchange="InitialStock.updateSelectAll()" /><span class="checkmark"></span></label></td>
          <td>${escapeHtml(item.material_code || '')}</td>
          <td>${escapeHtml(item.material_name || '')}</td>
          <td style="font-weight: 600; color: var(--primary);">${item.stock_qty || 0}</td>
          <td>${escapeHtml(item.unit || 'pcs')}</td>
          <td>${item.min_package || 1}</td>
          <td>${escapeHtml(item.supplier || '-')}</td>
          <td>${escapeHtml(item.factory || '-')}</td>
          <td>${escapeHtml(item.remark || '-')}</td>
          <td>${formatTime(item.updated_at)}</td>
          <td>
            <button class="btn btn-sm btn-secondary" onclick="InitialStock.edit(${item.id})">编辑</button>
            <button class="btn btn-sm btn-danger" onclick="InitialStock.delete(${item.id})">删除</button>
          </td>
        </tr>
      `).join('');
    }
    
    renderPagination(totalPages);
  }

  function renderPagination(totalPages) {
    const container = document.getElementById('pagination');
    if (totalPages <= 1) {
      container.innerHTML = '';
      return;
    }
    
    let html = '';
    html += `<button class="btn btn-sm btn-secondary" ${currentPage <= 1 ? 'disabled' : ''} onclick="InitialStock.goPage(${currentPage - 1})">上一页</button>`;
    html += `<span style="padding: 0 12px; line-height: 32px;">第 ${currentPage} / ${totalPages} 页</span>`;
    html += `<button class="btn btn-sm btn-secondary" ${currentPage >= totalPages ? 'disabled' : ''} onclick="InitialStock.goPage(${currentPage + 1})">下一页</button>`;
    container.innerHTML = html;
  }

  async function openModal(item = null) {
    editingId = item?.id || null;
    document.getElementById('modal-title').textContent = item ? '编辑期初库存' : '新增期初库存';
    document.getElementById('material-code').value = item?.material_code || '';
    document.getElementById('material-name').value = item?.material_name || '';
    document.getElementById('stock-qty').value = item?.stock_qty || 0;
    document.getElementById('unit').value = item?.unit || 'pcs';
    document.getElementById('min-package').value = item?.min_package || 1;
    document.getElementById('supplier').value = item?.supplier || '';
    document.getElementById('factory').value = item?.factory || '';
    document.getElementById('remark').value = item?.remark || '';
    document.getElementById('stock-modal').style.display = 'flex';
    
    // 动态加载工厂列表
    await loadFactoriesForSelect('factory-select');
  }

  function closeModal() {
    document.getElementById('stock-modal').style.display = 'none';
    editingId = null;
  }

  async function save() {
    const data = {
      material_code: document.getElementById('material-code').value.trim(),
      material_name: document.getElementById('material-name').value.trim(),
      stock_qty: parseInt(document.getElementById('stock-qty').value) || 0,
      unit: document.getElementById('unit').value.trim() || 'pcs',
      min_package: parseInt(document.getElementById('min-package').value) || 1,
      supplier: document.getElementById('supplier').value.trim(),
      factory: document.getElementById('factory').value.trim(),
      remark: document.getElementById('remark').value.trim()
    };
    
    if (!data.material_code || !data.material_name) {
      alert('请填写物料编码和物料名称');
      return;
    }
    
    try {
      if (editingId) {
        await API.put(`/api/initial-stock/${editingId}`, data);
        alert('更新成功');
      } else {
        await API.post('/api/initial-stock', data);
        alert('创建成功');
      }
      closeModal();
      loadList();
    } catch (e) {
      alert(e.message || '操作失败');
    }
  }

  async function edit(id) {
    const item = stockList.find(x => x.id === id);
    if (item) openModal(item);
  }

  async function deleteStock(id) {
    if (!confirm('确定要删除这条库存记录吗？')) return;
    try {
      await API.delete(`/api/initial-stock/${id}`);
      alert('删除成功');
      loadList();
    } catch (e) {
      alert(e.message || '删除失败');
    }
  }

  async function batchDelete() {
    const checked = document.querySelectorAll('.row-checkbox:checked');
    if (checked.length === 0) {
      alert('请先选择要删除的项');
      return;
    }
    if (!confirm(`确定要删除选中的 ${checked.length} 条库存记录吗？`)) return;
    
    const ids = Array.from(checked).map(cb => parseInt(cb.dataset.id));
    try {
      await API.post('/api/initial-stock/batch-delete', { ids });
      alert('批量删除成功');
      loadList();
    } catch (e) {
      alert(e.message || '批量删除失败');
    }
  }

  function toggleSelectAll(checkbox) {
    document.querySelectorAll('.row-checkbox').forEach(cb => cb.checked = checkbox.checked);
  }
  
  function updateSelectAll() {
    const selectAllCheckbox = document.getElementById('select-all');
    const rowCheckboxes = document.querySelectorAll('.row-checkbox');
    selectAllCheckbox.checked = rowCheckboxes.length > 0 && Array.from(rowCheckboxes).every(cb => cb.checked);
  }

  function search() {
    currentPage = 1;
    renderList();
  }

  function resetSearch() {
    document.getElementById('search-keyword').value = '';
    document.getElementById('factory-filter').value = '';
    currentFactory = '';
    currentPage = 1;
    loadList();
  }

  function filterByFactory() {
    const factory = document.getElementById('factory-filter')?.value || '';
    currentFactory = factory;
    currentPage = 1;
    loadList();
  }

  function goPage(page) {
    currentPage = page;
    renderList();
  }

  function formatTime(ts) {
    if (!ts) return '-';
    try {
      const d = new Date(ts);
      return d.toLocaleString('zh-CN', { hour12: false });
    } catch {
      return ts;
    }
  }

  function escapeHtml(str) {
    if (!str) return '';
    return String(str).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;');
  }

  window.InitialStock = {
    search,
    resetSearch,
    filterByFactory,
    edit,
    delete: deleteStock,
    closeModal,
    save,
    toggleSelectAll,
    updateSelectAll,
    goPage,
    closeImportModal,
    importExcel
  };
})();