using System;
using Brigadier.NET;
using Brigadier.NET.Builder;
using MinecraftClient.CommandHandler;

namespace MinecraftClient.Commands
{
    public class Reco : Command
    {
        public override string CmdName { get { return "reco"; } }
        public override string CmdUsage { get { return "reco [account]"; } }
        public override string CmdDesc { get { return Translations.cmd_reco_desc; } }

        public override void RegisterCommand(CommandDispatcher<CmdResult> dispatcher)
        {
            dispatcher.Register(l => l.Literal("help")
                .Then(l => l.Literal(CmdName)
                    .Executes(r => GetUsage(r.Source, string.Empty))
                )
            );

            dispatcher.Register(l => l.Literal(CmdName)
                .Executes(r => DoReconnect(r.Source, string.Empty))
                .Then(l => l.Argument("AccountNick", MccArguments.AccountNick())
                    .Executes(r => DoReconnect(r.Source, Arguments.GetString(r, "AccountNick"))))
                .Then(l => l.Literal("_help")
                    .Executes(r => GetUsage(r.Source, string.Empty))
                    .Redirect(dispatcher.GetRoot().GetChild("help").GetChild(CmdName)))
            );
        }

        private int GetUsage(CmdResult r, string? cmd)
        {
            return r.SetAndReturn(cmd switch
            {
#pragma warning disable format // @formatter:off
                _           =>  GetCmdDescTranslated(),
#pragma warning restore format // @formatter:on
            });
        }

        private int DoReconnect(CmdResult r, string account)
        {
            if (!string.IsNullOrWhiteSpace(account))
            {
                account = account.Trim();
                if (!Settings.Config.Main.Advanced.SetAccount(account))
                    return r.SetAndReturn(CmdResult.Status.Fail, string.Format(Translations.cmd_connect_unknown, account));
            }
            Program.Restart(keepAccountAndServerSettings: true);
            return r.SetAndReturn(CmdResult.Status.Done);
        }

        internal static string DoReconnect(string command)
        {
            string[] args = GetArgs(command);
            if (args.Length > 0)
            {
                string account = args[0].Trim();
                if (!Settings.Config.Main.Advanced.SetAccount(account))
                {
                    return string.Format(Translations.cmd_connect_unknown, account);
                }
            }
            Program.Restart(keepAccountAndServerSettings: true);
            return String.Empty;
        }
    }
}