CreateAccount.cs

using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Waher.IoTGateway;
using Waher.Networking.XMPP.Server;
using Waher.Security;
 
namespace Waher.Service.IoTBroker.Admin.Broker
{
    public class CreateAccount : CommandRegEx
    {
        public CreateAccount()
            : base(@"^create\s+account\s+(?'Name'[^\s]+)(\s+(?'Password'[^\s]+))?(\s+(?'EMail'[^\s]+))?(\s+(?'PhoneNr'[^\s]+))?$")
        {
        }
 
        public override string Name => "Create";
 
        public override async Task Execute(ChatState State, string[] Arguments, string OrgMessage, Match Details,
            ResponseCallbackHandler ResponseCallback)
        {
            int c = Arguments.Length;
            string Name = c < 2 ? string.Empty : Arguments[1];
            string Password = c < 3 ? string.Empty : Arguments[2];
            string EMail = c < 4 ? string.Empty : Arguments[3];
            string PhoneNr = c < 5 ? string.Empty : Arguments[4];
 
            KeyValuePair<IAccount, string[]> P = await XmppServerModule.PersistenceLayer.CreateAccount(string.Empty, Name,
                string.IsNullOrEmpty(Password) ? Hashes.BinaryToString(Gateway.NextBytes(16)) : Password,
                string.IsNullOrEmpty(EMail) ? new XmppAddress(State.To).BareJid.Value : EMail,
                PhoneNr, State.To);
 
            IAccount Account = P.Key;
 
            if (Account is null)
            {
                await XmppServerModule.SendErrorMessage("An account with name `" + Name + "` already exists.", string.Empty, ResponseCallback);
 
                string[] Alternatives = P.Value;
                if (!(Alternatives is null) && Alternatives.Length > 0)
                {
                    StringBuilder Markdown = new StringBuilder();
 
                    Markdown.AppendLine("Alternative name suggestions:");
                    Markdown.AppendLine();
 
                    foreach (string Alternative in Alternatives)
                    {
                        Markdown.Append("* `");
                        Markdown.Append(Alternative);
                        Markdown.AppendLine("`");
                    }
 
                    await ResponseCallback(Markdown.ToString(), string.Empty);
                }
            }
            else
            {
                StringBuilder Markdown = new StringBuilder();
 
                Markdown.AppendLine("Information for user:");
                Markdown.AppendLine();
                Markdown.AppendLine("| Account  ||");
                Markdown.AppendLine("|:----|:----|");
                Markdown.Append("| Domain: | `");
                Markdown.Append(Gateway.Domain);
                Markdown.AppendLine("` |");
                Markdown.Append("| Account: | `");
                Markdown.Append(Account.UserName);
                Markdown.AppendLine("` |");
                Markdown.Append("| Password: | `");
                Markdown.Append(Account.Password);
                Markdown.AppendLine("` |");
 
                await ResponseCallback(Markdown.ToString(), string.Empty);
            }
        }
 
        public override HelpItem[] GetHelp()
        {
            return new HelpItem[]
            {
                new HelpItem("create account NAME[ PASSWORD[ EMAIL[ PHONE]]]", "Creates a new account with the account name given by `NAME`. Optional `PASSWORD`, `EMAIL` and `PHONE` parameters can also be provided.")
            };
        }
    }
}