Return NetSuite file contents by NetSuite file internal ID.

REST_Query_File_Contents_by_InternalID.js

/**
 * @NApiVersion 2.0
 * @NScriptType Restlet
 * @NModuleScope SameAccount
 * @Author        Charles.Bastian
 * @Created       2019-03-13
 * @ScriptName    REST_Query_File_Contents_by_InternalID
 * @Filename      REST_Query_File_Contents_by_InternalID.js
 * @ScriptID      customscript_rest_get_file_contents
 * @Production    
 *  @FileID       
 *  @InternalURL  
 *  @ExternalURL  
 *  @SearchURL    
 * @SandBoxQA     
 *  @FileID       
 *  @InternalURL  
 *  @ExternalURL  N/A
 *  
 * @modifications 
 *  Date          Author            Version     Remarks
 *  2019-03-13    Charles.Bastian   v1.3.13-1   Created
 *  
 *  
 */
​
define(['N/search','N/record','N/file'],function(search,record,file){
  /**
   * Function called upon sending a GET request to the RESTlet.
   */
  function doGet(requestParams){
    log.debug('in doGet',JSON.stringify(requestParams.custparamfileNSID));
    if(requestParams.custparamfileNSID!==undefined){
      if(requestParams.custparamfileNSID!=''){
        return findFileByInternalID(requestParams.custparamfileNSID);
      }else{
      return JSON.stringify({'ERROR[E0]':'No NetSuite internal ID value received.'});
      }
    }else{
      return JSON.stringify({'ERROR[E1]':'Missing fileNSID parameter'});
    }
  }
​
  function findFileByInternalID(nsID){
  var respObj={};
  var fileObj=file.load({id:nsID});
  
  try{
      if(fileObj){
        log.debug('fileObj',JSON.stringify(fileObj.getContents()));
        respObj={'fileObj':fileObj,'fileContents':fileObj.getContents()};
      }else{
        respObj=JSON.stringify({'ERROR[E2]':'No File with NetSuite internal ID: '+nsID+' found.'});
      }
      log.debug('respObj',JSON.stringify(respObj));
  }catch(E3){
    return JSON.stringify({'ERROR[E3]':JSON.stringify(E3.message)});
  }
    return JSON.stringify(respObj);
  }
  
  return{
    'get':doGet
  };
});