source: binary-improvements2/WebServer/src/Commands/WebTokens.cs@ 402

using System.Collections.Generic;
using System.Text.RegularExpressions;
using JetBrains.Annotations;

namespace Webserver.Commands {
        [UsedImplicitly]
        public class WebTokens : ConsoleCmdAbstract {
                private static readonly Regex validNameTokenMatcher = new Regex (@"^\w+$");

                public override string[] GetCommands () {
                        return new[] {"webtokens"};
                }

                public override string GetDescription () {
                        return "Manage web tokens";
                }

                public override string GetHelp () {
                        return "Set/get webtoken permission levels. A level of 0 is maximum permission.\n" +
                               "Usage:\n" +
                               "   webtokens add <username> <usertoken> <level>\n" +
                               "   webtokens remove <username>\n" +
                               "   webtokens list";
                }

                public override void Execute (List<string> _params, CommandSenderInfo _senderInfo) {
                        if (_params.Count >= 1) {
                                if (_params [0].EqualsCaseInsensitive ("add")) {
                                        ExecuteAdd (_params);
                                } else if (_params [0].EqualsCaseInsensitive ("remove")) {
                                        ExecuteRemove (_params);
                                } else if (_params [0].EqualsCaseInsensitive ("list")) {
                                        ExecuteList ();
                                } else {
                                        SdtdConsole.Instance.Output ($"Invalid sub command \"{_params [0]}\".");
                                }
                        } else {
                                SdtdConsole.Instance.Output ("No sub command given.");
                        }
                }

                private void ExecuteAdd (List<string> _params) {
                        if (_params.Count != 4) {
                                SdtdConsole.Instance.Output ($"Wrong number of arguments, expected 4, found {_params.Count}.");
                                return;
                        }

                        if (string.IsNullOrEmpty (_params [1])) {
                                SdtdConsole.Instance.Output ("Argument 'username' is empty.");
                                return;
                        }

                        if (!validNameTokenMatcher.IsMatch (_params [1])) {
                                SdtdConsole.Instance.Output (
                                        "Argument 'username' may only contain characters (A-Z, a-z), digits (0-9) and underscores (_).");
                                return;
                        }

                        if (string.IsNullOrEmpty (_params [2])) {
                                SdtdConsole.Instance.Output ("Argument 'usertoken' is empty.");
                                return;
                        }

                        if (!validNameTokenMatcher.IsMatch (_params [2])) {
                                SdtdConsole.Instance.Output (
                                        "Argument 'usertoken' may only contain characters (A-Z, a-z), digits (0-9) and underscores (_).");
                                return;
                        }

                        if (!int.TryParse (_params [3], out int level)) {
                                SdtdConsole.Instance.Output ("Argument 'level' is not a valid integer.");
                                return;
                        }

                        WebPermissions.Instance.AddAdmin (_params [1], _params [2], level);
                        SdtdConsole.Instance.Output ($"Web user with name={_params [1]} and password={_params [2]} added with permission level of {level}.");
                }

                private void ExecuteRemove (List<string> _params) {
                        if (_params.Count != 2) {
                                SdtdConsole.Instance.Output ($"Wrong number of arguments, expected 2, found {_params.Count}.");
                                return;
                        }

                        if (string.IsNullOrEmpty (_params [1])) {
                                SdtdConsole.Instance.Output ("Argument 'username' is empty.");
                                return;
                        }

                        if (!validNameTokenMatcher.IsMatch (_params [1])) {
                                SdtdConsole.Instance.Output (
                                        "Argument 'username' may only contain characters (A-Z, a-z), digits (0-9) and underscores (_).");
                                return;
                        }

                        WebPermissions.Instance.RemoveAdmin (_params [1]);
                        SdtdConsole.Instance.Output ($"{_params [1]} removed from web user permissions list.");
                }

                private void ExecuteList () {
                        SdtdConsole.Instance.Output ("Defined webuser permissions:");
                        SdtdConsole.Instance.Output ("  Level: Name / Token");
                        foreach (WebPermissions.AdminToken at in WebPermissions.Instance.GetAdmins ()) {
                                SdtdConsole.Instance.Output ($"  {at.permissionLevel,5}: {at.name} / {at.token}");
                        }
                }
        }
}