using UnityEngine;
using TMPro;

namespace TPSBR.UI
{
	using Fusion;
	using Fusion.Plugin;

	public sealed class UIGameInfo : UIBehaviour
	{
		// PRIVATE MEMBERS

		[SerializeField]
		private TextMeshProUGUI _gameNameText;
		[SerializeField]
		private TextMeshProUGUI _sessionNameText;
		[SerializeField]
		private TextMeshProUGUI _regionText;
		[SerializeField]
		private TextMeshProUGUI _fpsText;
		[SerializeField]
		private TextMeshProUGUI _rttText;
		[SerializeField]
		private TextMeshProUGUI _connectionTypeText;

		private int            _lastFPS;
		private int            _lastRTT;
		private int            _frameCount;
		private float          _deltaTime;
		private double         _rtt;
		private ConnectionType _connectionType;

		// PUBLIC MEMBERS

		public void UpdateInfo(NetworkRunner runner, bool full = false)
		{
			++_frameCount;

			_deltaTime += Time.deltaTime;
			_rtt       += runner.GetPlayerRtt(PlayerRef.None);

			if (_deltaTime > 0.25f)
			{
				int fps = Mathf.RoundToInt(_frameCount / _deltaTime);
				if (fps != _lastFPS)
				{
					_lastFPS = fps;
					_fpsText.text = fps.ToString();
				}

				int rtt = (int)(_rtt * 1000.0 / _frameCount);
				if (rtt != _lastRTT)
				{
					_lastRTT = rtt;
					_rttText.text = rtt > 0 ? rtt.ToString() : "---";
				}

				_frameCount = 0;
				_deltaTime  = 0.0f;
				_rtt        = 0.0;
			}

			if (_connectionType != runner.CurrentConnectionType)
			{
				_connectionType = runner.CurrentConnectionType;
				_connectionTypeText.text = _connectionType.ToString();
			}

			if (full == true)
			{
				_gameNameText.text = runner.SessionInfo.GetDisplayName();
				_sessionNameText.text = runner.SessionInfo.Name;
				_regionText.text = runner.SessionInfo.Region;
			}
		}
	}
}