using System.Collections.Generic;
using UnityEngine;
using Assets.Scripts;
using System;
using static GameController;
using static PlayersHandler;
using static GameHandler;
using System.Linq;

public class ScoreHandler : SingletonMB<ScoreHandler>
{
    #region PROPERTIES

    private Dictionary<int, PlayerScore> PlayersScores { get; set; }
    private Dictionary<int, PlayerScore> OuttedPlayers {  get; set; }

#endregion
#region VARIABLES

    [SerializeField] private GameObject ScorePanelPrefab;
    [SerializeField] private GameObject UiDocument;
    private GameController _gameController;
    private PlayersHandler _playersHandler;
    private GameHandler _gameHandler;
    private DataBearer _dataBearer;

#endregion
#region EVENTS

    public event EventHandler<ScoreEventArgs> OnScoreReachingZero;

    public class ScoreEventArgs : EventArgs
    {
        public int playerId;
        public ScoreEventArgs(int id)
        {
            playerId = id;
        }
    }
    internal void RemovePlayer_OnPlayerFinished(object sender, PlayerEventArgs args)
    {
        if (PlayersScores.TryGetValue(args.player.Id, out PlayerScore looser))
        {
            _dataBearer.RecordPlayerDistance(looser.PlayerName);
            _dataBearer.RecordPlayerScore(looser.PlayerId, looser.PlayerName);
            _dataBearer.RecordPlayerAttemptDuration(looser.PlayerName);

            OuttedPlayers.Add(looser.PlayerId, looser);
            PlayersScores.Remove(looser.PlayerId);
        }

        
    }
    private void RemoveScores_OnAttemptEnded(object sender, AttemptEventArgs args)
    {
        List<int> keys;
        if (PlayersScores.Count > 0)
        {
            keys = new List<int>(PlayersScores.Keys);
            foreach(var key in keys)
            {
                _dataBearer.RecordPlayerDistance(PlayersScores[key].PlayerName);
                _dataBearer.RecordPlayerScore(key, PlayersScores[key].PlayerName);
                _dataBearer.RecordPlayerAttemptDuration(PlayersScores[key].PlayerName);

                OuttedPlayers.Add(key, PlayersScores[key]);
                _playersHandler.RemovePlayer(key);
            }
            PlayersScores.Clear();
        }
        keys = new List<int>(OuttedPlayers.Keys);
        foreach (var key in keys)
        {
            _dataBearer.RecordPlayerFinalScore((int)OuttedPlayers[key].Score, OuttedPlayers[key].PlayerName);
            

            OuttedPlayers[key].ScorePanel.Dispose();
        }
        OuttedPlayers = new();
        PlayersScores = new();
    }

#endregion
#region ENDPOINTS

    public void AddScorePanel(string playerName, int playerId)
    {
        var newScorePanel = Instantiate(ScorePanelPrefab, UiDocument.transform);
        var scoreScript = newScorePanel.GetComponent<ScorePannelScript>();
        scoreScript.SetPlayerName(playerName);
        PlayerScore newRecord = new PlayerScore(playerName, playerId, scoreScript);
        PlayersScores.Add(playerId, newRecord);
    }

    public void AddScorePanel(string playerName, int playerId, Color playerColor)
    {
        var newScorePanel = Instantiate(ScorePanelPrefab, UiDocument.transform);
        var scoreScript = newScorePanel.GetComponent<ScorePannelScript>();
        scoreScript.SetColor(playerColor);
        scoreScript.SetPlayerName(playerName);
        PlayerScore newRecord = new PlayerScore(playerName, playerId, scoreScript);
        PlayersScores.Add(playerId, newRecord);
    }

    public void SetScore(float score, int playerId)
    {
        if (PlayersScores.TryGetValue(playerId, out PlayerScore updatedScore))
        {
            updatedScore.Score = score;
            updatedScore.ScorePanel.SetScore(score);
            PlayersScores[playerId] = updatedScore;
        }

        if ( score <= 0) //false &&
        {
            OnScoreReachingZero.Invoke(this, new ScoreEventArgs(playerId));
        }
    }
    
    public void AddToScore(float score, int playerId)
    {
        if (PlayersScores.TryGetValue(playerId, out PlayerScore updatedScore))
        {
            updatedScore.Score += score;
            SetScore(updatedScore.Score, playerId);
        }
    }

    public void AddScoreToAllAlivePlayers(float scoreToAdd)
    {
        var keys = new List<int>(PlayersScores.Keys);
        foreach (var key in keys)
        {
            AddToScore(scoreToAdd, key);
        }
    }


    public float GetPlayerScore(int playerId)
    {
                return PlayersScores.TryGetValue(playerId, out PlayerScore pscore) 
            ? pscore.Score 
            :   OuttedPlayers.TryGetValue(playerId, out PlayerScore oscore) 
                ? oscore.Score 
                : 0;
    }
    

#endregion
#region METHODS    
#endregion
#region LIFECYCLE

    protected override void Awake()
    {
        base.Awake();
        _gameController = GameController.Instance;
        _playersHandler = PlayersHandler.Instance;
        _gameHandler = GameHandler.Instance;
        _dataBearer = DataBearer.Instance;

        _playersHandler.OnPlayerFinished += RemovePlayer_OnPlayerFinished;
        _gameHandler.OnAttemptEnding += RemoveScores_OnAttemptEnded;

        PlayersScores = new();
        OuttedPlayers = new();
    }



#endregion

    struct PlayerScore
    {
    
        internal string PlayerName { get; set; }
        internal int PlayerId { get; set; }
        internal float Score { get; set; }
        internal ScorePannelScript ScorePanel { get; set; }
        public PlayerScore(string playerName, int playerId, ScorePannelScript scorePannel)
        {
            PlayerName = playerName;
            PlayerId = playerId;
            Score = 0f;
            ScorePanel = scorePannel;
        }
    }
}



#region PROPERTIES
#endregion
#region VARIABLES
#endregion
#region EVENTS
#endregion
#region METHODS
#endregion
#region LIFECYCLE
#endregion