const sqlite3 = require('sqlite3').verbose();

// 连接数据库
const db = new sqlite3.Database('company_finance.db');

console.log('检查备份数据...');

// 检查备份表中的数据量
db.get('SELECT COUNT(*) as count FROM products_backup', (err, row) => {
  if (err) {
    console.error('错误:', err);
    db.close();
    return;
  }
  
  console.log(`备份表中有 ${row.count} 条商品数据`);
  
  if (row.count > 0) {
    console.log('开始恢复数据...');
    
    // 从备份表恢复数据到主表
    db.run(`
      INSERT INTO products (
        product_id, product_name, category_id, parent_category_id, 
        specifications, unit, price, stock, min_stock, 
        supplier_id, description, created_at, updated_at
      ) SELECT 
        product_id, product_name, category_id, parent_category_id, 
        specifications, unit, price, stock, min_stock, 
        supplier_id, description, created_at, updated_at
      FROM products_backup
    `, function(err) {
      if (err) {
        console.error('恢复数据失败:', err);
        db.close();
        return;
      }
      
      console.log(`成功恢复 ${this.changes} 条商品数据`);
      
      // 验证恢复结果
      db.get('SELECT COUNT(*) as count FROM products', (err, row) => {
        if (err) {
          console.error('验证失败:', err);
        } else {
          console.log(`恢复后商品表中有 ${row.count} 条数据`);
        }
        db.close();
      });
    });
  } else {
    console.log('备份表为空，无法恢复数据');
    db.close();
  }
});