using NativeEngine;
using Sandbox.Network;
using System.Collections.Generic;

namespace Sandbox;

/// <summary>
/// Rich Presence System for Steam
/// </summary>
internal sealed class SteamRichPresenceSystem : IRichPresenceSystem
{
	Dictionary<string, string> _values = new();

	void SetValue( string key, string value )
	{
		if ( _values.TryGetValue( key, out var oldValue ) && oldValue == value )
			return;

		Steam.SteamFriends().SetRichPresence( key, value );

		_values[key] = value;
	}

	void Clear()
	{
		Steam.SteamFriends().ClearRichPresence();
		_values.Clear();
	}

	void IRichPresenceSystem.Poll()
	{
		if ( PartyRoom.Current is PartyRoom party )
		{
			SetValue( "party_id", $"{party.Id}" );
		}
		else
		{
			SetValue( "party_id", null );
		}

		SetValue( "in_editor", Application.IsEditor ? "1" : "0" );

		if ( IGameInstance.Current is null )
		{
			SetValue( "steam_display", "#StatusMenu" );
			SetValue( "gametitle", null );
			SetValue( "steam_player_group", null );
			SetValue( "steam_player_group_size", null );
			SetValue( "lobby", null );
			SetValue( "connect", null );
			return;
		}

		if ( Networking.IsActive )
		{
			var gameLobby = Networking.System.Sockets
				.OfType<SteamLobbySocket>()
				.FirstOrDefault();

			if ( gameLobby is not null )
			{
				SetValue( "connect", $"+connect {gameLobby.LobbySteamId}" );
				SetValue( "steam_player_group", $"{gameLobby.LobbySteamId}" );
				SetValue( "steam_player_group_size", $"{gameLobby.LobbyMemberCount}" );
			}
			else
			{
				var connection = Networking.System.Connection;
				var playerCount = Connection.All.Count( c => c.State == Connection.ChannelState.Connected );

				if ( connection is SteamNetwork.IpConnection or SteamNetwork.IdConnection )
				{
					SetValue( "connect", $"+connect {connection.Address}" );
					SetValue( "steam_player_group", $"{connection.Address}" );
					SetValue( "steam_player_group_size", $"{playerCount}" );
				}
			}
		}
		else
		{
			SetValue( "connect", null );
			SetValue( "steam_player_group", null );
			SetValue( "steam_player_group_size", null );
		}

		if ( IGameInstance.Current.Package is Package gamePackage )
		{
			SetValue( "steam_display", "#StatusGame" );
			SetValue( "gametitle", gamePackage.Title );
			SetValue( "map", "" );
			SetValue( "gamename", Application.GameIdent );
		}
		else
		{
			SetValue( "steam_display", "#StatusGame" );
			SetValue( "gametitle", "Secret Game" );
			SetValue( "map", "" );
			SetValue( "gamename", Application.GameIdent );
		}
	}
}