store_node/cloudfunctions/publishSecondhandGoods/index.js

// 云函数publishSecondhandGoods
const cloud = require('wx-server-sdk')

// 初始化cloud
cloud.init({
  env: cloud.DYNAMIC_CURRENT_ENV
})
const db = cloud.database()

exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()
  const openid = wxContext.OPENID
  
  // 获取请求参数
  const { 
    title, 
    description, 
    price, 
    condition,
    category,
    images = []
  } = event
  
  // 验证必填字段
  if (!title || !price || !category) {
    return {
      success: false,
      message: '请填写所有必填字段'
    }
  }
  
  try {
    // 添加新商品
    const result = await db.collection('secondhand_goods').add({
      data: {
        openid,
        title,
        description,
        price: parseFloat(price),
        condition,
        category,
        images,
        status: 'available', // 状态：可购买
        createTime: db.serverDate(),
        updateTime: db.serverDate(),
        publishTime: new Date().toISOString()
      }
    })
    
    return {
      success: true,
      goodsId: result._id,
      message: '商品发布成功'
    }
  } catch (error) {
    return {
      success: false,
      message: '商品发布失败',
      error: error.message
    }
  }
}