using System;
using System.Linq;
using System.Text;
using Robust.Server.Player;
using Robust.Shared.Console;
using Robust.Shared.Enums;
using Robust.Shared.IoC;
using Robust.Shared.Map;
using Robust.Shared.Maths;
using Robust.Shared.Network;

namespace Robust.Server.Console.Commands
{
    internal class TeleportCommand : IConsoleCommand
    {
        public string Command => "tp";
        public string Description => "Teleports a player to any location in the round.";
        public string Help => "tp <x> <y> [<mapID>]";

        public void Execute(IConsoleShell shell, string argStr, string[] args)
        {
            var player = shell.Player as IPlayerSession;
            if (player?.Status != SessionStatus.InGame || player.AttachedEntity == null)
                return;

            if (args.Length < 2 || !float.TryParse(args[0], out var posX) || !float.TryParse(args[1], out var posY))
                return;

            var mapMgr = IoCManager.Resolve<IMapManager>();

            var position = new Vector2(posX, posY);
            var transform = player.AttachedEntity?.Transform;

            if(transform == null)
                return;

            transform.AttachToGridOrMap();

            MapId mapId;
            if (args.Length == 3 && int.TryParse(args[2], out var intMapId))
                mapId = new MapId(intMapId);
            else
                mapId = transform.MapID;

            if (mapMgr.TryFindGridAt(mapId, position, out var grid))
            {
                var gridPos = grid.WorldToLocal(position);

                transform.Coordinates = new EntityCoordinates(grid.GridEntityId, gridPos);
            }
            else
            {
                var mapEnt = mapMgr.GetMapEntity(mapId);

                transform.AttachParent(mapEnt);
                transform.WorldPosition = position;
            }

            shell.WriteLine($"Teleported {player} to {mapId}:{posX},{posY}.");
        }
    }

    public class TeleportToPlayerCommand : IConsoleCommand
    {
        public string Command => "tpto";
        public string Description => "Teleports the current player to the location of another player.";
        public string Help => "tpto <username>";

        public void Execute(IConsoleShell shell, string argStr, string[] args)
        {
            var player = shell.Player as IPlayerSession;
            if (player?.Status != SessionStatus.InGame || player.AttachedEntity == null)
                return;

            if (args.Length < 1)
                return;

            var players = IoCManager.Resolve<IPlayerManager>();
            var name = args[0];

            if (players.TryGetSessionByUsername(name, out var target))
            {
                if (target.AttachedEntity == null)
                    return;

                player.AttachedEntity.Transform.Coordinates = target.AttachedEntity.Transform.Coordinates;
            }
        }
    }

    public class ListPlayers : IConsoleCommand
    {
        public string Command => "listplayers";
        public string Description => "Lists all players currently connected";
        public string Help => "listplayers";

        public void Execute(IConsoleShell shell, string argStr, string[] args)
        {
            // Player: number of people connected and their byond keys
            // Admin: read a byond variable which shows their ip, byond version, ckey, attached entity and hardware id
            // EDIT: inb4 sued by MSO for AGPLv3 violation.

            var sb = new StringBuilder();

            var players = IoCManager.Resolve<IPlayerManager>().GetAllPlayers();
            sb.AppendLine($"{"Player Name",20} {"Status",12} {"Playing Time",14} {"Ping",9} {"IP EndPoint",20}");
            sb.AppendLine("-------------------------------------------------------------------------------");

            foreach (var p in players)
            {
                sb.AppendLine(string.Format("{4,20} {1,12} {2,14:hh\\:mm\\:ss} {3,9} {0,20}",
                    p.ConnectedClient.RemoteEndPoint,
                    p.Status.ToString(),
                    DateTime.UtcNow - p.ConnectedTime,
                    p.ConnectedClient.Ping + "ms",
                    p.Name));
            }

            shell.WriteLine(sb.ToString());
        }
    }

    internal class KickCommand : IConsoleCommand
    {
        public string Command => "kick";
        public string Description => "Kicks a connected player out of the server, disconnecting them.";
        public string Help => "kick <PlayerIndex> [<Reason>]";

        public void Execute(IConsoleShell shell, string argStr, string[] args)
        {
            var players = IoCManager.Resolve<IPlayerManager>();
            if (args.Length < 1)
            {
                var player = shell.Player as IPlayerSession;
                var toKickPlayer = player ?? players.GetAllPlayers().FirstOrDefault();
                if (toKickPlayer == null)
                {
                    shell.WriteLine("You need to provide a player to kick.");
                    return;
                }
                shell.WriteLine($"You need to provide a player to kick. Try running 'kick {toKickPlayer?.Name}' as an example.");
                return;
            }

            var name = args[0];

            if (players.TryGetSessionByUsername(name, out var target))
            {
                var network = IoCManager.Resolve<IServerNetManager>();

                var reason = "Kicked by console.";
                if (args.Length >= 2)
                {
                    reason = reason + args[1];
                }

                network.DisconnectChannel(target.ConnectedClient, reason);
            }
        }
    }
}
