using System;

using System.Collections.Generic;

using System.Net;

public class RXGAdapter {

    private List<string> _errors;

    public IEnumerable<int> CreateAccounts(string username, int quantity) 

    {

        ResetErrors();

        var accountIDs = new List<int>();

        for (int i = 1; i <= quantity; i++) 

        {

            int accountID = CreateAccount(username + i);

            if (_errors.Count > 0)

            {

                return new List<int>();

            }

            accountIDs.Add(accountID);

        }

        return accountIDs;

    }

    public int CreateAccount(string username) {

        try {

            // Make HTTP request to the server

            // Parse the ID from of the response if successful

            int id = 32;

            return id;

        }

        catch (WebException e) 

        {

            // Parse the errors from the response if unsuccessful

            var errors = new List<string>();

            _errors.AddRange(errors);

            return -1;

        }

    }

    public void ResetErrors() 

    {

        _errors = new List<string>();   

    }

    public bool HasErrors() 

    {

        return _errors.Count > 0;

    }

    public IEnumerable<string> Errors 

    {

        get { return _errors; }     

    }

}