// 毛重字段(grossWeight)处理逻辑完整修复脚本
// 此脚本用于统一所有API接口对grossWeight字段的处理逻辑

const fs = require('fs');
const path = require('path');

// 定义配置
const config = {
  serverFilePath: path.join(__dirname, 'server-mysql.js'),
  backupFilePath: path.join(__dirname, 'server-mysql.js.bak.final-fix-' + Date.now()),
  logFilePath: path.join(__dirname, 'final-fix-gross-weight-log.txt')
};

// 日志函数
function log(message) {
  const timestamp = new Date().toISOString();
  const logMessage = '[' + timestamp + '] ' + message;
  console.log(logMessage);
  try {
    fs.appendFileSync(config.logFilePath, logMessage + '\n');
  } catch (e) {
    console.error('写入日志文件失败:', e.message);
  }
}

// 读取文件内容
function readFile(filePath) {
  try {
    return fs.readFileSync(filePath, 'utf8');
  } catch (error) {
    log('读取文件失败: ' + error.message);
    throw error;
  }
}

// 写入文件内容
function writeFile(filePath, content) {
  try {
    fs.writeFileSync(filePath, content, 'utf8');
    log('文件已成功写入: ' + filePath);
  } catch (error) {
    log('写入文件失败: ' + error.message);
    throw error;
  }
}

// 创建备份文件
function createBackup() {
  try {
    const content = readFile(config.serverFilePath);
    writeFile(config.backupFilePath, content);
    log('已创建备份文件: ' + config.backupFilePath);
  } catch (error) {
    log('创建备份文件失败: ' + error.message);
    throw error;
  }
}

// 主函数
function main() {
  log('===== 开始执行毛重字段处理逻辑完整修复 =====');
  
  try {
    // 创建备份
    createBackup();
    
    // 读取文件内容
    let content = readFile(config.serverFilePath);
    
    // 修复1: 统一中间件中的毛重处理逻辑，确保所有空值都设为5
    const searchPatterns = [
      'product.grossWeight = 0;',
      'product.grossWeight = 0; // 空值设置为0'
    ];
    
    let fixesApplied = 0;
    searchPatterns.forEach(pattern => {
      if (content.includes(pattern)) {
        const originalCount = (content.match(new RegExp(pattern, 'g')) || []).length;
        content = content.replace(new RegExp(pattern, 'g'), 'product.grossWeight = 5; // 空值设置为5');
        const fixedCount = (content.match(/product\.grossWeight = 5;/g) || []).length - originalCount;
        fixesApplied += fixedCount;
        log('修复中间件中的毛重默认值: 替换了' + fixedCount + '处');
      }
    });
    
    if (fixesApplied > 0) {
      log('修复1完成: 已统一所有中间件中的毛重默认值为5');
    } else {
      log('修复1跳过: 所有中间件中的毛重默认值已经是5');
    }
    
    // 修复2: 在商品上传接口添加毛重处理逻辑
    const uploadApiSearch = 'app.post(\'/api/products/upload\', async (req, res) => {';
    if (content.includes(uploadApiSearch)) {
      // 查找上传接口的位置
      const uploadApiStart = content.indexOf(uploadApiSearch);
      const uploadApiEnd = content.indexOf('});', uploadApiStart) + 3;
      const uploadApiContent = content.substring(uploadApiStart, uploadApiEnd);
      
      // 检查是否已经包含毛重处理逻辑
      if (uploadApiContent.includes('grossWeight') && uploadApiContent.includes('parseFloat')) {
        log('修复2跳过: 商品上传接口已经包含毛重处理逻辑');
      } else {
        // 查找商品数据处理的位置（在try块内）
        const tryBlockStart = uploadApiContent.indexOf('try {');
        const tryBlockEnd = uploadApiContent.lastIndexOf('} catch');
        
        if (tryBlockStart !== -1 && tryBlockEnd !== -1) {
          // 在try块开始处添加毛重处理逻辑
          const tryBlockContent = uploadApiContent.substring(tryBlockStart, tryBlockEnd);
          const weightHandlingCode = `try {\n    // 修复毛重字段处理逻辑\n    if (req.body && req.body.productData) {\n      let processedGrossWeight = 5; // 默认值为5\n      if (req.body.productData.grossWeight !== null && req.body.productData.grossWeight !== undefined && req.body.productData.grossWeight !== \'\') {\n        const numValue = parseFloat(req.body.productData.grossWeight);\n        if (!isNaN(numValue) && isFinite(numValue)) {\n          processedGrossWeight = numValue;\n        }\n      }\n      req.body.productData.grossWeight = processedGrossWeight;\n      console.log(\'修复后 - 毛重值处理: 原始值=\' + (req.body.productData.grossWeight || \'undefined\') + ', 处理后=\' + processedGrossWeight);\n    }`;
          
          // 替换原代码
          const fixedUploadApiContent = uploadApiContent.replace(tryBlockContent, weightHandlingCode);
          content = content.replace(uploadApiContent, fixedUploadApiContent);
          log('修复2完成: 在商品上传接口添加了毛重处理逻辑');
        } else {
          log('修复2失败: 无法在商品上传接口中找到try-catch块');
        }
      }
    } else {
      log('修复2跳过: 未找到商品上传接口');
    }
    
    // 写入修复后的内容
    writeFile(config.serverFilePath, content);
    
    log('===== 毛重字段处理逻辑完整修复完成 =====');
    log('修复内容总结:');
    log('1. 统一了所有中间件中的毛重默认值为5');
    log('2. 在商品上传接口中添加了毛重处理逻辑，将空值设为5，有效数字转换为float类型');
    log('3. 创建了备份文件，以便需要时恢复');
    
  } catch (error) {
    log('修复过程中发生错误: ' + error.message);
    log('===== 毛重字段处理逻辑完整修复失败 =====');
    process.exit(1);
  }
}

// 执行主函数
main();