Data mapping with sanctuary

dataTransform.js

var data = {"id":1,"orderName":"Order from spain","teamName":"Portland penguins","orderType":"lock","discount":5,"contactName":"John doe","contactPhonePrefix":"+32","contactPhoneNumber":"3423232","contactEmail":"jhon.doe@mycompany.com","contactAddress":"830 Southwest","dealerId":"123","dealerNote":"Lorem ipsum","createdAt":"2017-11-13T16:40:12.000Z","updatedAt":"2017-11-13T16:40:12.000Z","products":[{"id":5,"externalId":"C77124","createdAt":"2017-11-13T16:40:12.000Z","updatedAt":"2017-11-13T16:40:12.000Z","OrderProduct":{"createdAt":"2017-11-13T16:40:12.000Z","updatedAt":"2017-11-13T16:40:12.000Z","orderId":1,"productId":5},"selectedSizes":[{"id":1,"technicalSize":520,"quantity":5,"createdAt":"2017-11-13T16:40:12.000Z","updatedAt":"2017-11-13T16:40:12.000Z","ProductSelectedSize":{"createdAt":"2017-11-13T16:40:12.000Z","updatedAt":"2017-11-13T16:40:12.000Z","productId":5,"selectedSizeId":1}}]}]}
var transformation = {"id":"id","order_name":"orderName","team_name":"teamName","order_type":"orderType","discount":"discount","contact.name":"contactName","contact.phone_number.prefix":"contactPhonePrefix","contact.phone_number.number":"contactPhoneNumber","contact.email":"contactEmail","contact.address":"contactAddress","product_list":["products",{"id":"id","product_id":"externalId","selected_sizes":["selectedSizes",{"id":"id","technical_size":"technicalSize","quantity":"quantity"}]}],"dealer_id":"dealerId","dealer_note":"dealerNote"}

function mappingStuff (data,transformation) {
  
  let keys = R.keys(transformation)  
  
  let mapSourceToTarget = R.curry(fillObject)(data,transformation)
  let value = S.reduce_((acc,val) => {
    return S.chain(x =>{ 
      let result =  mapSourceToTarget(x,val)
      return result
    } ,acc)
  },S.Right({}),keys)
  
  return value
}

function propertyExists(object,property){
  if(Object.prototype.hasOwnProperty.call(object,property)){
    return S.Right(object[property])
  }
  return S.Left("Property not exists "+ property)
}

function fillObject(dbData,transform,acc,currentKey)  {

    let dbPropName = propertyExists(transform,currentKey)
    let propertyForData = R.curry(propertyExists)(dbData)
    let dbValue = S.chain(propertyForData,dbPropName)
   
    return S.chain(x => { 
      if (S.is(Array,x)){
        return handleArrayProperty(dbData,transform,acc,currentKey,x)
      }
      
      if(S.isLeft(dbValue)) {
        return dbValue
      } else {
        let applyToNested = R.curry(setNested)(acc)(dbValue.value)
        let applyToNormal = R.curry(setNormal)(acc)(dbValue.value)
        let val = S.ifElse( checkIfNested , applyToNested , applyToNormal, currentKey )
        return S.Right(val) 
      } 
    },dbPropName)
}

function handleArrayProperty(dbData,transform,acc,currentKey,dbPropName){
 
  let dataArray = transform[currentKey]
  let dataPropName = S.get(S.is(String), '0', dataArray).value
  
  let dataArr = dbData[dataPropName]
  let transfArr = R.drop(1,dataArray)
  let transf = transfArr[0]
  let res = []
  let applyToNormal = R.curry(setNormal)(acc)
  
  R.forEach(x=>{
    let newKeys = R.keys(transf)
    let recursiveFilling = R.curry(fillObject)(x,transf)

    let value = S.reduce_((acc,val) => {
      return S.chain(y =>{ 
       let result =  recursiveFilling(y,val)
       return result
      } ,acc)
    },S.Right({}),newKeys)
    
    res.push(value)
    
  },dataArr) 
  
  return S.Right(applyToNormal(res,currentKey))
}

function checkIfNested(key){
  return key.indexOf('.') > -1
}

function setNested(currentObject,value,key){ 
  let keyLevels = key.split('.')
  return R.assocPath(keyLevels,value,currentObject)
}

function setNormal(currentObject,value,key) {
  return R.assoc(key,value,currentObject)
}

mappingStuff(data,transformation)