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

public class PlayersHandler : SingletonMB<PlayersHandler>
{
    // Start is called before the first frame update
    [SerializeField] private GameObject playerPrefab;

#region PROPERTIES

    public Dictionary<int, PlayerScript> Players { get; private set; } = new();

#endregion
#region VARIABLES

    private ScoreHandler _scoreHandler;
    private GameHandler _gameHandler;

#endregion
#region EVENTS

    /// <summary>
    /// Fires when a player is instanciated in the game
    /// </summary>
    public event EventHandler<PlayerEventArgs> OnPlayerInstanciated;
    /// <summary>
    /// Fires when a player have finished their attempt
    /// </summary>
    public event EventHandler<PlayerEventArgs> OnPlayerFinished;
    /// <summary>
    /// Fires when all players have finished their attempt
    /// </summary>
    public event EventHandler<EventArgs> OnAllPlayersFinished;
    public class PlayerEventArgs : EventArgs
    {
        
        public PlayerScript player;

        public PlayerEventArgs(PlayerScript player)
        {
            this.player = player;
        }
    }

    #endregion
    #region ENDPOINTS
    /// <summary>
    ///     Remove a player from the game and fire a PlayerFinished event. Fire AllPlayerFinished event if needed
    /// </summary>
    /// <param name="playerId"></param>
    public void RemovePlayer(int playerId)
    {
        if (Players.TryGetValue(playerId, out PlayerScript player))
        {
            Players.Remove(playerId);
            if(!_gameHandler.AttemptEnding)
                OnPlayerFinished.Invoke(this, new PlayerEventArgs(player));
            player.Dispose();
        }

        if(Players.Count == 0 && !_gameHandler.AttemptEnding)
        {
            OnAllPlayersFinished.Invoke(this, new EventArgs());
            
        }
    }


    public bool InstanciatePlayer<T>(Vector3 position) where T : MonoBehaviour
    {

        var player = SpawnPlayer(new Vector3(position.x, position.y, -1));

        PlayerScript script = player.GetComponent<PlayerScript>();
        player.AddComponent<T>();
        Players.Add(script.Id, script);

        DecoratePlayer(player);
        CreateScorePanel(script);

        Debug.Log($"# Player \"{script.Name}\" instanciated !");
        OnPlayerInstanciated?.Invoke(this, new PlayerEventArgs(script));

        return true;

    }

    #endregion
    #region METHODS

    private GameObject SpawnPlayer(Vector3 position)
    {
        var player = Instantiate(playerPrefab, position, Quaternion.identity);
        var script = player.GetComponent<PlayerScript>();
        script.SetId(Players.Count);
        return player;
    }

    private void CreateScorePanel(PlayerScript script)
    {
        _scoreHandler.AddScorePanel(script.Name, script.Id, script.Color);
    }

    //private GameObject InstantiatePlayer(string playerName, Vector3 position)
    //{
    //    incrementialId++;
    //    var player = Instantiate(playerPrefab, position, Quaternion.identity);
    //    var script = player.GetComponent<PlayerScript>();
    //    script.SetName(playerName);
    //    script.SetId(incrementialId);
        
    //    _scoreHandler.AddScorePanel(script.Name, script.Id, script.Color);
        
    //    Players.Add(script);
    //    return player;
    //}

    private void DecoratePlayer(GameObject player)
    {
        Transform child = player.transform.Find("sprite");
        PlayerScript script = player.GetComponent<PlayerScript>();
        var components = child.GetComponentsInChildren<SpriteRenderer>();
        var jetpackFront = child.transform.Find("JetpackFront").GetComponent<SpriteRenderer>();
        var jetpackBack = child.transform.Find("JetpackBack").GetComponent<SpriteRenderer>();

        float alpha = _gameHandler.HaveHumanPlayer && !script.IsHuman ? 0.4f : 1.0f;

        var scriptColor = script.Color!=null ? script.Color : new Color(255, 255, 255);
        scriptColor.a = alpha;
        foreach ( var component in components )
        {
            component.color = new Color(255, 255, 255, alpha);
        }

        jetpackFront.color = scriptColor;
        jetpackBack.color = scriptColor;
    }

#endregion
#region LIFECYCLE

    protected override void Awake()
    {
        base.Awake();
        _scoreHandler = ScoreHandler.Instance;
        _gameHandler = GameHandler.Instance;

    }

#endregion

}




//public void InstanciateOmnicient(Vector3 position)
//{
//    var bot = SpawnPlayer(position);

//    PlayerScript script = bot.GetComponent<PlayerScript>();
//    Players.Add(script.Id, script);
//    DecoratePlayer(bot);

//    CreateScorePanel(script);

//    OnPlayerInstanciated?.Invoke(this, new PlayerEventArgs(script));
//}

//public void InstanciateObserver(Vector3 position)
//{
//    var bot = SpawnPlayer(position);
//    PlayerScript script = bot.GetComponent<PlayerScript>();
//    Players.Add(script.Id, script);
//    DecoratePlayer(bot);

//    CreateScorePanel(script);

//    OnPlayerInstanciated?.Invoke(this, new PlayerEventArgs(script));
//}

//public void InstanciateIterator(Vector3 position)
//{
//    var bot = SpawnPlayer(position);
//    PlayerScript script = bot.GetComponent<PlayerScript>();
//    Players.Add(script.Id, script);
//    DecoratePlayer(bot);

//    CreateScorePanel(script);

//    OnPlayerInstanciated?.Invoke(this, new PlayerEventArgs(script));
//}

//public void InstanciateHumanPlayer(Vector3 position)
//{
//    Debug.Log("Instanciate Human");

//    var humanPlayer = SpawnPlayer(new Vector3(position.x, position.y, -1));

//    PlayerScript script = humanPlayer.GetComponent<PlayerScript>();
//    script.IsHuman = true;
//    humanPlayer.AddComponent<HumanPlayer>();
//    DecoratePlayer(humanPlayer);

//    CreateScorePanel(script);

//    Players.Add(script.Id, script);
//    OnPlayerInstanciated?.Invoke(this, new PlayerEventArgs(script));
//}