// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV})

// 云函数入口函数
exports.main = async (event, context) => {
  
  switch (event.action||event.name) {
    case "wxacode.getUnlimited":
    case "getWXACodeUnlimited":{
      return getWXACodeUnlimited(event)
    }
    case "wxacode.get":
    case 'getWXACode': {
      return getWXACode(event)
    }
    case "security.msgSecCheck":{
      //return cloud.openapi.security.msgSecCheck(event.data);
      try{
        var res = await cloud.openapi.security.msgSecCheck(event.data);
        return res;
      }catch(e){
        return e;
        //e = new Error("输入内容有敏感词汇");
        //e.code = e.errCode = 87014;
        //throw e;
      }
    }
    case 'getOpenData': {
      return getOpenData(event)
    }
    default: {
      return
    }
  }
}

async function getWXACodeUnlimited(event){
  let {scene, page} = event;
  const wxacodeResult = await cloud.openapi.wxacode.getUnlimited({
    scene, page
  })
  const fileExtensionMatches = wxacodeResult.contentType.match(/\/([^\/]+)/)
  const fileExtension = (fileExtensionMatches && fileExtensionMatches[1]) || 'jpg'

  const uploadResult = await cloud.uploadFile({
    cloudPath: `images/wxacode/${(page+"?"+scene).replace(/[\/?&]/g, "_")}.${fileExtension}`,
    fileContent: wxacodeResult.buffer,
  })

  if (!uploadResult.fileID) {
    throw new Error(`upload failed with empty fileID and storage server status code ${uploadResult.statusCode}`)
  }

  return uploadResult.fileID
}


async function getWXACode(event) {
  let {path} = event.data;
  const wxacodeResult = await cloud.openapi.wxacode.get({
    path
  })

  const fileExtensionMatches = wxacodeResult.contentType.match(/\/([^\/]+)/)
  const fileExtension = (fileExtensionMatches && fileExtensionMatches[1]) || 'jpg'

  return cloud.uploadFile({
    cloudPath: `images/wxacode/${path.replace(/[\/?&]/g,"_")}.${fileExtension}`,
    fileContent: wxacodeResult.buffer,
  });
}

async function getOpenData(event) {
  return cloud.getOpenData({
    list: event.openData.list,
  })
}