let filename = "users.csv"
let users = [];

//This example will log out a list of all users in the system.
var usersApi =  new platformClient.UsersApi();

let opts = {
  'pageSize': 100, // Number | Page size
  'pageNumber': 1, // Number | Page number
  'sortOrder': "ASC", // String | Ascending or descending sort order
  'state': "deleted" // String | Only list users of this state
};

function delay(t, v) {
   return new Promise(function(resolve) {
       setTimeout(resolve.bind(null, v), t)
   });
}

function processPageOfUsers(results){
  for(var x=0; x< results.entities.length; x++){
    // console.log(results.entities[x].name);
    let u = results.entities[x];
    users.push([u.id, u.name]);
  }

  if(results.nextUri){
    opts.pageNumber++;
    //get the next page of users directly
    delay(250).then(function(){
      usersApi.getUsers(opts).then(processPageOfUsers);
    });
  }
  else{
    console.log("Exporting csv...");
    exportCSV(filename, users);
  }
}

function exportCSV(filename, data){
  let csvContent = "data:text/csv;charset=utf-8,"
      + data.map(e => e.join(",")).join("\n");

  // doesn't escape commas
  var encodedUri = encodeURI(csvContent);
  var link = document.createElement("a");
  link.setAttribute("href", encodedUri);
  link.setAttribute("download", filename);

  //document.body.appendChild(link); // Required for FireFox
  link.click();
}

usersApi.getUsers(opts).then(processPageOfUsers);